From 5c8962b39bd4f6871ec87a988ac43d7bfad04d2b Mon Sep 17 00:00:00 2001
From: "Y. Wang" <yw05@forksworld.de>
Date: Mon, 11 Apr 2022 16:55:50 +0200
Subject: Implement basic route signaling with Japanese signals for demo

---
 advtrains_interlocking/signal_aspect_ui.lua | 165 ++++++++++++++++++++++++++++
 1 file changed, 165 insertions(+)
 create mode 100644 advtrains_interlocking/signal_aspect_ui.lua

(limited to 'advtrains_interlocking/signal_aspect_ui.lua')

diff --git a/advtrains_interlocking/signal_aspect_ui.lua b/advtrains_interlocking/signal_aspect_ui.lua
new file mode 100644
index 0000000..edf3ab1
--- /dev/null
+++ b/advtrains_interlocking/signal_aspect_ui.lua
@@ -0,0 +1,165 @@
+local F = advtrains.formspec
+local players_aspsel = {}
+
+local function make_signal_aspect_selector_t1(suppasp, purpose, isasp)
+	local form = {"size[7,7.5]"}
+	form[#form+1] = F.S_label(0.5, 0.5, "Select signal aspect")
+	form[#form+1] = F.label(0.5, 1, purpose)
+
+	form[#form+1] = F.S_label(0.5, 1.5, "Main aspect")
+	local entries = {}
+	local selid = 1
+	for idx, spv in ipairs(suppasp.main) do
+		local entry
+		if isasp and spv == isasp.main then
+			selid = idx
+		end
+		if spv == 0 then
+			entry = attrans("Danger (halt)")
+		elseif spv == -1 then
+			entry = attrans("Continue at maximum speed")
+		elseif not spv then
+			entry = attrans("Continue with current speed limit")
+		else
+			entry = attrans("Continue with the speed limit of @1", spv)
+		end
+		entries[idx] = entry
+	end
+	form[#form+1] = F.dropdown(0.5, 2, 6, "main", entries, selid, true)
+
+	form[#form+1] = F.S_label(0.5, 3, "Shunt aspect")
+	if suppasp.shunt == nil then
+		local st = 1
+		if isasp and isasp.shunt then st = 2 end
+		local entries = {
+			attrans("No shunting"),
+			attrans("Shunting allowed"),
+		}
+		form[#form+1] = F.dropdown(0.5, 3.5, 6, "shunt_free", entries, st, true)
+	end
+
+	form[#form+1] = F.S_label(0.5, 4.5, "Distant aspect")
+	local entries = {}
+	local selid = 1
+	for idx, spv in ipairs(suppasp.dst) do
+		local entry
+		if isasp and spv == isasp.dst then
+			selid = idx
+		end
+		if spv == 0 then
+			entry = attrans("Expect to stop at the next signal")
+		elseif spv == -1 then
+			entry = attrans("Expect to continue at maximum speed")
+		elseif not spv then
+			entry = attrans("No information on distant signal")
+		else
+			entry = attrans("Expect to continue with a speed limit of @1", spv)
+		end
+		entries[idx] = entry
+	end
+	form[#form+1] = F.dropdown(0.5, 5, 6, "dst", entries, selid, true)
+
+	form[#form+1] = F.S_button_exit(0.5, 6, 6, 1, "save", "Save signal aspect")
+	return table.concat(form)
+end
+
+local function make_signal_aspect_selector_t2(suppasp, purpose, isasp)
+	local form = {"size[7,4]"}
+	local def = advtrains.interlocking.aspects.get_type2_definition(suppasp.group)
+	if not def then
+		return nil
+	end
+	form[#form+1] = F.S_label(0.5, 0.5, "Select signal aspect")
+	form[#form+1] = F.label(0.5, 1, purpose)
+
+	local entries = {}
+	local selid = 1
+	for idx, spv in ipairs(def.main) do
+		if isasp and isasp.type2name == spv.name then
+			selid = idx
+		end
+		entries[idx] = spv.label
+	end
+	form[#form+1] = F.dropdown(0.5, 1.5, 6, "asp", entries, selid, true)
+	form[#form+1] = F.S_button_exit(0.5, 2.5, 6, 1, "save", "Save signal aspect")
+	return table.concat(form)
+end
+
+function advtrains.interlocking.show_signal_aspect_selector(pname, p_suppasp, p_purpose, callback, isasp)
+	local suppasp = p_suppasp or {
+		main = {0, -1},
+		dst = {false},
+		shunt = false,
+		info = {},
+	}
+	local purpose = p_purpose or ""
+
+	local form
+	if suppasp.type == 2 then
+		form = make_signal_aspect_selector_t2(suppasp, purpose, isasp)
+	else
+		form = make_signal_aspect_selector_t1(suppasp, purpose, isasp)
+	end
+	if not form then
+		return
+	end
+
+	local token = advtrains.random_id()
+	minetest.show_formspec(pname, "at_il_sigaspdia_"..token, form)
+	minetest.after(1, function()
+	players_aspsel[pname] = {
+		suppasp = suppasp,
+		callback = callback,
+		token = token,
+	}
+	end)
+end
+
+local function usebool(sup, val, free)
+	if sup == nil then
+		return val == free
+	else
+		return sup
+	end
+end
+
+local function get_aspect_from_formspec_t1(suppasp, fields)
+	local maini = tonumber(fields.main)
+	if not maini then return end
+	local dsti = tonumber(fields.dst)
+	if not dsti then return end
+	return {
+		main = suppasp.main[maini],
+		dst = suppasp.dst[dsti],
+		shunt = usebool(suppasp.shunt, fields.shunt_free, "2"),
+		info = {},
+	}
+end
+
+local function get_aspect_from_formspec_t2(suppasp, fields)
+	local asp = advtrains.interlocking.aspects.type2main_to_type1(suppasp.group, tonumber(fields.asp))
+	return asp
+end
+
+minetest.register_on_player_receive_fields(function(player, formname, fields)
+	local pname = player:get_player_name()
+	local psl = players_aspsel[pname]
+	if psl then
+		if formname == "at_il_sigaspdia_"..psl.token then
+			local suppasp = psl.suppasp
+			if fields.save then
+				local asp
+				if suppasp.type == 2 then
+					asp = get_aspect_from_formspec_t2(suppasp, fields)
+				else
+					asp = get_aspect_from_formspec_t1(suppasp, fields)
+				end
+				if asp then
+					psl.callback(pname, asp)
+				end
+			end
+		else
+			players_aspsel[pname] = nil
+		end
+	end
+end)
-- 
cgit v1.2.3


From d1a0d8f2654d6ee64c1a43de7958b1eadfaff6b0 Mon Sep 17 00:00:00 2001
From: "Y. Wang" <yw05@forksworld.de>
Date: Fri, 10 Jun 2022 22:21:54 +0200
Subject: Use tabs to switch between signaling and IP forms

---
 .gitignore                                      |   1 +
 advtrains/formspec.lua                          |  36 +++++-
 advtrains_interlocking/signal_api.lua           |  11 +-
 advtrains_interlocking/signal_aspect_ui.lua     | 165 ++++++++++++++++++------
 advtrains_interlocking/signal_aspects.lua       |   2 +-
 advtrains_interlocking/signal_main_ui.lua       |   0
 advtrains_interlocking/spec/signal_api_spec.lua |   3 +-
 advtrains_interlocking/tcb_ts_ui.lua            |  25 ++--
 8 files changed, 176 insertions(+), 67 deletions(-)
 create mode 100644 advtrains_interlocking/signal_main_ui.lua

(limited to 'advtrains_interlocking/signal_aspect_ui.lua')

diff --git a/.gitignore b/.gitignore
index b3180de..bef77f1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1,4 @@
 ## Eclipse project files & directories
 .project
 .settings
+luacov.*
diff --git a/advtrains/formspec.lua b/advtrains/formspec.lua
index 91e300d..aa5aa69 100644
--- a/advtrains/formspec.lua
+++ b/advtrains/formspec.lua
@@ -1,6 +1,14 @@
 local sformat = string.format
 local fsescape = minetest.formspec_escape
 
+local function make_list(entries)
+	local t = {}
+	for k, v in ipairs(entries) do
+		t[k] = fsescape(v)
+	end
+	return table.concat(t, ",")
+end
+
 local function f_button_exit(x, y, w, h, id, text)
 	return sformat("button_exit[%f,%f;%f,%f;%s;%s]", x, y, w, h, id, text)
 end
@@ -10,12 +18,8 @@ local function S_button_exit(x, y, w, h, id, ...)
 end
 
 local function f_dropdown(x, y, w, id, entries, sel, indexed)
-	local t = {}
-	for k, v in pairs(entries) do
-		t[k] = fsescape(v)
-	end
 	return sformat("dropdown[%f,%f;%f;%s;%s;%d%s]",
-		x, y, w, id, table.concat(t, ","),
+		x, y, w, id, make_list(entries),
 		sel or 1,
 		indexed and ";true" or "")
 end
@@ -28,10 +32,32 @@ local function S_label(x, y, ...)
 	return f_label(x, y, attrans(...))
 end
 
+local function f_tabheader(x, y, w, h, id, entries, sel, transparent, border)
+	local st = {string.format("%f,%f",x, y)}
+	if h then
+		if w then
+			st[#st+1] = string.format("%f,%f", w, h)
+		else
+			st[#st+1] = tostring(h)
+		end
+	end
+	st[#st+1] = tostring(id)
+	st[#st+1] = make_list(entries)
+	st[#st+1] = tostring(sel)
+	if transparent ~= nil then
+		st[#st+1] = tostring(transparent)
+		if border ~= nil then
+			st[#st+1] = tostring(border)
+		end
+	end
+	return string.format("tabheader[%s]", table.concat(st, ";"))
+end
+
 return {
 	button_exit = f_button_exit,
 	S_button_exit = S_button_exit,
 	dropdown = f_dropdown,
 	label = f_label,
 	S_label = S_label,
+	tabheader = f_tabheader,
 }
diff --git a/advtrains_interlocking/signal_api.lua b/advtrains_interlocking/signal_api.lua
index a25e1f6..5b3baf8 100644
--- a/advtrains_interlocking/signal_api.lua
+++ b/advtrains_interlocking/signal_api.lua
@@ -272,7 +272,10 @@ function advtrains.interlocking.signal_rc_handler(pos, node, player, itemstack,
 		advtrains.interlocking.show_ip_form(pos, pname)
 		return
 	end
+	advtrains.interlocking.show_signal_form(pos, node, pname)
+end
 	
+function advtrains.interlocking.show_signal_form(pos, node, pname)
 	local sigd = advtrains.interlocking.db.get_sigd_for_signal(pos)
 	if sigd then
 		advtrains.interlocking.show_signalling_form(sigd, pname)
@@ -288,7 +291,7 @@ function advtrains.interlocking.signal_rc_handler(pos, node, player, itemstack,
 			advtrains.interlocking.show_signal_aspect_selector(
 				pname,
 				ndef.advtrains.supported_aspects,
-				"Set aspect manually", callback,
+				pos, callback,
 				isasp)
 		else
 			--static signal - only IP
@@ -332,7 +335,7 @@ function advtrains.interlocking.signal_get_aspect(pos)
 	local asp = get_supposed_aspect(pos)
 	if not asp then
 		asp = advtrains.interlocking.signal_get_real_aspect(pos)
-		set_supposed_aspect(pos)
+		set_supposed_aspect(pos, asp)
 	end
 	return asp
 end
@@ -372,6 +375,7 @@ function advtrains.interlocking.show_ip_form(pos, pname, only_notset)
 		return
 	end
 	local form = "size[7,5]label[0.5,0.5;Signal at "..minetest.pos_to_string(pos).."]"
+	form = form .. advtrains.interlocking.make_signal_formspec_tabheader(pname, pos, 7, 2)
 	advtrains.interlocking.db.check_for_duplicate_ip(pos)
 	local pts, connid = advtrains.interlocking.db.get_ip_by_signalpos(pos)
 	if pts then
@@ -394,6 +398,9 @@ end
 
 minetest.register_on_player_receive_fields(function(player, formname, fields)
 	local pname = player:get_player_name()
+	if advtrains.interlocking.handle_signal_formspec_tabheader_fields(pname, fields) then
+		return true
+	end
 	if not minetest.check_player_privs(pname, {train_operator=true, interlocking=true}) then
 		return
 	end
diff --git a/advtrains_interlocking/signal_aspect_ui.lua b/advtrains_interlocking/signal_aspect_ui.lua
index edf3ab1..4b41187 100644
--- a/advtrains_interlocking/signal_aspect_ui.lua
+++ b/advtrains_interlocking/signal_aspect_ui.lua
@@ -1,63 +1,136 @@
 local F = advtrains.formspec
 local players_aspsel = {}
 
-local function make_signal_aspect_selector_t1(suppasp, purpose, isasp)
-	local form = {"size[7,7.5]"}
-	form[#form+1] = F.S_label(0.5, 0.5, "Select signal aspect")
-	form[#form+1] = F.label(0.5, 1, purpose)
+local function describe_t1_main_aspect(spv)
+	if spv == 0 then
+		return attrans("Danger (halt)")
+	elseif spv == -1 then
+		return attrans("Continue at maximum speed")
+	elseif not spv then
+		return attrans("Continue with current speed limit")
+	else
+		return attrans("Continue with the speed limit of @1", tostring(spv))
+	end
+end
+
+local function describe_t1_shunt_aspect(shunt)
+	if shunt then
+		return attrans("Shunting allowed")
+	else
+		return attrans("No shunting")
+	end
+end
+
+local function describe_t1_distant_aspect(spv)
+	if spv == 0 then
+		return attrans("Expect to stop at the next signal")
+	elseif spv == -1 then
+		return attrans("Expect to continue at maximum speed")
+	elseif not spv then
+		return attrans("No distant signal information")
+	else
+		return attrans("Expect to continue with a speed limit of @1", tostring(spv))
+	end
+end
+
+advtrains.interlocking.describe_t1_main_aspect = describe_t1_main_aspect
+advtrains.interlocking.describe_t1_shunt_aspect = describe_t1_shunt_aspect
+advtrains.interlocking.describe_t1_distant_aspect = describe_t1_distant_aspect
+
+local function describe_supported_aspects_t1(suppasp, isasp)
+	local t = {}
 
-	form[#form+1] = F.S_label(0.5, 1.5, "Main aspect")
 	local entries = {}
 	local selid = 1
 	for idx, spv in ipairs(suppasp.main) do
-		local entry
 		if isasp and spv == isasp.main then
 			selid = idx
 		end
-		if spv == 0 then
-			entry = attrans("Danger (halt)")
-		elseif spv == -1 then
-			entry = attrans("Continue at maximum speed")
-		elseif not spv then
-			entry = attrans("Continue with current speed limit")
-		else
-			entry = attrans("Continue with the speed limit of @1", spv)
-		end
-		entries[idx] = entry
+		entries[idx] = describe_t1_main_aspect(spv)
 	end
-	form[#form+1] = F.dropdown(0.5, 2, 6, "main", entries, selid, true)
+	t.main = entries
+	t.main_current = selid
 
-	form[#form+1] = F.S_label(0.5, 3, "Shunt aspect")
 	if suppasp.shunt == nil then
-		local st = 1
-		if isasp and isasp.shunt then st = 2 end
-		local entries = {
-			attrans("No shunting"),
-			attrans("Shunting allowed"),
+		selid = 1
+		if isasp and isasp.shunt then
+			selid = 2
+		end
+		entries = {
+			describe_t1_shunt_aspect(false),
+			describe_t1_shunt_aspect(true),
 		}
-		form[#form+1] = F.dropdown(0.5, 3.5, 6, "shunt_free", entries, st, true)
+		t.shunt = entries
+		t.shunt_current = selid
 	end
 
-	form[#form+1] = F.S_label(0.5, 4.5, "Distant aspect")
-	local entries = {}
-	local selid = 1
+	entries = {}
+	selid = 1
 	for idx, spv in ipairs(suppasp.dst) do
-		local entry
 		if isasp and spv == isasp.dst then
 			selid = idx
 		end
-		if spv == 0 then
-			entry = attrans("Expect to stop at the next signal")
-		elseif spv == -1 then
-			entry = attrans("Expect to continue at maximum speed")
-		elseif not spv then
-			entry = attrans("No information on distant signal")
-		else
-			entry = attrans("Expect to continue with a speed limit of @1", spv)
-		end
-		entries[idx] = entry
+		entries[idx] = describe_t1_distant_aspect(spv)
 	end
-	form[#form+1] = F.dropdown(0.5, 5, 6, "dst", entries, selid, true)
+	t.dst = entries
+	t.dst_current = selid
+	return t
+end
+
+advtrains.interlocking.describe_supported_aspects_t1 = describe_supported_aspects_t1
+
+local signal_tabheader_map = {}
+
+local function make_signal_formspec_tabheader(pname, pos, width, selid)
+	signal_tabheader_map[pname] = pos
+	local options = {
+		attrans("Signal aspect"),
+		attrans("Influence point"),
+		attrans("Distant signalling"),
+	}
+	return F.tabheader(0, 0, nil, nil, "signal_tab", options, selid)
+end
+
+local function handle_signal_formspec_tabheader_fields(pname, fields)
+	local n = tonumber(fields.signal_tab)
+	local pos = signal_tabheader_map[pname]
+	if not (n and pos) then
+		return false
+	end
+	if n == 1 then
+		local node = advtrains.ndb.get_node(pos)
+		advtrains.interlocking.show_signal_form(pos, node, pname)
+	elseif n == 2 then
+		advtrains.interlocking.show_ip_form(pos, pname)
+	end
+	return true
+end
+
+advtrains.interlocking.make_signal_formspec_tabheader = make_signal_formspec_tabheader
+advtrains.interlocking.handle_signal_formspec_tabheader_fields = handle_signal_formspec_tabheader_fields
+
+local function make_signal_aspect_selector_t1(suppasp, purpose, isasp)
+	local form = {"size[7,7.25]"}
+	local t = describe_supported_aspects_t1(suppasp, isasp)
+	if type(purpose) == "table" then
+		form[#form+1] = make_signal_formspec_tabheader(purpose.pname, purpose.pos, 7, 1)
+		purpose = ""
+	end
+	form[#form+1] = F.S_label(0.5, 0.5, "Select signal aspect")
+	form[#form+1] = F.label(0.5, 1, purpose)
+
+	form[#form+1] = F.S_label(0.5, 1.5, "Main aspect")
+	form[#form+1] = F.dropdown(0.5, 2, 6, "main", t.main, t.main_current, true)
+
+	form[#form+1] = F.S_label(0.5, 3, "Shunt aspect")
+	if t.shunt then
+		form[#form+1] = F.dropdown(0.5, 3.5, 6, "shunt_free", t.shunt, t.shunt_current, true)
+	else
+		form[#form+1] = F.S_label(0.5, 3.5, "The shunt aspect cannot be changed")
+	end
+
+	form[#form+1] = F.S_label(0.5, 4.5, "Distant aspect")
+	form[#form+1] = F.dropdown(0.5, 5, 6, "dst", t.dst, t.dst_current, true)
 
 	form[#form+1] = F.S_button_exit(0.5, 6, 6, 1, "save", "Save signal aspect")
 	return table.concat(form)
@@ -69,6 +142,10 @@ local function make_signal_aspect_selector_t2(suppasp, purpose, isasp)
 	if not def then
 		return nil
 	end
+	if type(purpose) == "table" then
+		form[#form+1] = make_signal_formspec_tabheader(purpose.pname, purpose.pos, 7, 1)
+		purpose = ""
+	end
 	form[#form+1] = F.S_label(0.5, 0.5, "Select signal aspect")
 	form[#form+1] = F.label(0.5, 1, purpose)
 
@@ -93,6 +170,9 @@ function advtrains.interlocking.show_signal_aspect_selector(pname, p_suppasp, p_
 		info = {},
 	}
 	local purpose = p_purpose or ""
+	if type(p_purpose) == "table" then
+		purpose = {pname = pname, pos = p_purpose}
+	end
 
 	local form
 	if suppasp.type == 2 then
@@ -106,13 +186,13 @@ function advtrains.interlocking.show_signal_aspect_selector(pname, p_suppasp, p_
 
 	local token = advtrains.random_id()
 	minetest.show_formspec(pname, "at_il_sigaspdia_"..token, form)
-	minetest.after(1, function()
+	--minetest.after(1, function()
 	players_aspsel[pname] = {
 		suppasp = suppasp,
 		callback = callback,
 		token = token,
 	}
-	end)
+	--end)
 end
 
 local function usebool(sup, val, free)
@@ -147,6 +227,9 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 	if psl then
 		if formname == "at_il_sigaspdia_"..psl.token then
 			local suppasp = psl.suppasp
+			if handle_signal_formspec_tabheader_fields(pname, fields) then
+				return true
+			end
 			if fields.save then
 				local asp
 				if suppasp.type == 2 then
diff --git a/advtrains_interlocking/signal_aspects.lua b/advtrains_interlocking/signal_aspects.lua
index a70d176..eebb4ba 100644
--- a/advtrains_interlocking/signal_aspects.lua
+++ b/advtrains_interlocking/signal_aspects.lua
@@ -1,4 +1,4 @@
-type2defs = {}
+local type2defs = {}
 
 local function register_type2(def)
 	local t = {type = 2}
diff --git a/advtrains_interlocking/signal_main_ui.lua b/advtrains_interlocking/signal_main_ui.lua
new file mode 100644
index 0000000..e69de29
diff --git a/advtrains_interlocking/spec/signal_api_spec.lua b/advtrains_interlocking/spec/signal_api_spec.lua
index 2659380..cd7a1d1 100644
--- a/advtrains_interlocking/spec/signal_api_spec.lua
+++ b/advtrains_interlocking/spec/signal_api_spec.lua
@@ -4,8 +4,7 @@ mineunit("core")
 
 _G.advtrains = {
 	interlocking = {
-		aspects = sourcefile("signal_aspects"),
-		--aspects = fixture("../../signal_aspects"),
+		aspects = fixture("../../signal_aspects"),
 	},
 	ndb = {
 		get_node = minetest.get_node,
diff --git a/advtrains_interlocking/tcb_ts_ui.lua b/advtrains_interlocking/tcb_ts_ui.lua
index 0cc10da..b3b8221 100755
--- a/advtrains_interlocking/tcb_ts_ui.lua
+++ b/advtrains_interlocking/tcb_ts_ui.lua
@@ -608,7 +608,8 @@ function advtrains.interlocking.show_signalling_form(sigd, pname, sel_rte, calle
 	if not tcbs.signal_name then tcbs.signal_name = "Signal at "..minetest.pos_to_string(sigd.p) end
 	if not tcbs.routes then tcbs.routes = {} end
 	
-	local form = "size[7,10]label[0.5,0.5;Signal at "..minetest.pos_to_string(sigd.p).."]"
+	local form = "size[7,9.75]label[0.5,0.5;Signal at "..minetest.pos_to_string(sigd.p).."]"
+	form = form .. advtrains.interlocking.make_signal_formspec_tabheader(pname, tcbs.signal, 7, 1)
 	form = form.."field[0.8,1.5;5.2,1;name;Signal name;"..minetest.formspec_escape(tcbs.signal_name).."]"
 	form = form.."button[5.5,1.2;1,1;setname;Set]"
 	
@@ -668,12 +669,7 @@ function advtrains.interlocking.show_signalling_form(sigd, pname, sel_rte, calle
 			if hasprivs then
 				form = form.."button[0.5,8;2.5,1;newroute;New Route]"
 				form = form.."button[  3,8;2.5,1;unassign;Unassign Signal]"
-				form = form.."button[  3,9;2.5,1;influp;Influence Point]"
-			end
-			if tcbs.ars_disabled then
-				form = form.."button[0.5,9;2.5,1;arsenable;Enable ARS]"
-			else
-				form = form.."button[0.5,9;2.5,1;arsdisable;Disable ARS]"
+				form = form..string.format("checkbox[0.5,8.75;ars;Automatic routesetting;%s]", not tcbs.ars_disabled)
 			end
 		elseif sigd_equal(tcbs.route_origin, sigd) then
 			-- something has gone wrong: tcbs.routeset should have been set...
@@ -706,6 +702,10 @@ end
 
 minetest.register_on_player_receive_fields(function(player, formname, fields)
 	local pname = player:get_player_name()
+	if string.find(formname, "^at_il_signalling_")
+		and advtrains.interlocking.handle_signal_formspec_tabheader_fields(pname, fields) then
+		return true
+	end
 	if not minetest.check_player_privs(pname, "train_operator") then
 		return
 	end
@@ -792,16 +792,9 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 				minetest.chat_send_player(pname, "Please cancel route first!")
 			end
 		end
-		if fields.influp and hasprivs then
-			advtrains.interlocking.show_ip_form(tcbs.signal, pname)
-			return
-		end
 		
-		if tcbs.ars_disabled and fields.arsenable then
-			tcbs.ars_disabled = nil
-		end
-		if not tcbs.ars_disabled and fields.arsdisable then
-			tcbs.ars_disabled = true
+		if fields.ars then
+			tcbs.ars_disabled = not minetest.is_yes(fields.ars)
 		end
 		
 		if fields.auto then
-- 
cgit v1.2.3


From 98c37108762c6d7c9f1d691b84f49bfa65b81b28 Mon Sep 17 00:00:00 2001
From: "Y. Wang" <yw05@forksworld.de>
Date: Sat, 11 Jun 2022 18:07:00 +0200
Subject: Implement primitive distant signaling

---
 advtrains/formspec.lua                             |  10 ++
 advtrains_interlocking/database.lua                |   4 +
 advtrains_interlocking/demosignals.lua             |   6 +-
 advtrains_interlocking/distant.lua                 | 137 +++++++++++++++++++++
 advtrains_interlocking/distant_ui.lua              |  76 ++++++++++++
 advtrains_interlocking/init.lua                    |   3 +
 advtrains_interlocking/routesetting.lua            |  21 ++++
 advtrains_interlocking/signal_api.lua              |  85 +------------
 advtrains_interlocking/signal_aspect_accessors.lua | 127 +++++++++++++++++++
 advtrains_interlocking/signal_aspect_ui.lua        |   6 +-
 advtrains_interlocking/signal_aspects.lua          |  26 +++-
 advtrains_interlocking/signal_main_ui.lua          |   0
 .../spec/basic_signalling_spec.lua                 |  87 +++++++++++++
 advtrains_interlocking/spec/signal_api_spec.lua    |  49 --------
 advtrains_interlocking/tcb_ts_ui.lua               |   8 +-
 15 files changed, 507 insertions(+), 138 deletions(-)
 create mode 100644 advtrains_interlocking/distant.lua
 create mode 100644 advtrains_interlocking/distant_ui.lua
 create mode 100644 advtrains_interlocking/signal_aspect_accessors.lua
 delete mode 100644 advtrains_interlocking/signal_main_ui.lua
 create mode 100644 advtrains_interlocking/spec/basic_signalling_spec.lua
 delete mode 100644 advtrains_interlocking/spec/signal_api_spec.lua

(limited to 'advtrains_interlocking/signal_aspect_ui.lua')

diff --git a/advtrains/formspec.lua b/advtrains/formspec.lua
index aa5aa69..20dab59 100644
--- a/advtrains/formspec.lua
+++ b/advtrains/formspec.lua
@@ -9,6 +9,14 @@ local function make_list(entries)
 	return table.concat(t, ",")
 end
 
+local function f_button(x, y, w, h, id, text)
+	return sformat("button[%f,%f;%f,%f;%s;%s]", x, y, w, h, id, text)
+end
+
+local function S_button(x, y, w, h, id, ...)
+	return f_button(x, y, w, h, id, attrans(...))
+end
+
 local function f_button_exit(x, y, w, h, id, text)
 	return sformat("button_exit[%f,%f;%f,%f;%s;%s]", x, y, w, h, id, text)
 end
@@ -54,6 +62,8 @@ local function f_tabheader(x, y, w, h, id, entries, sel, transparent, border)
 end
 
 return {
+	button = f_button,
+	S_button = S_button,
 	button_exit = f_button_exit,
 	S_button_exit = S_button_exit,
 	dropdown = f_dropdown,
diff --git a/advtrains_interlocking/database.lua b/advtrains_interlocking/database.lua
index efa5eb8..c5ae906 100644
--- a/advtrains_interlocking/database.lua
+++ b/advtrains_interlocking/database.lua
@@ -134,6 +134,9 @@ function ildb.load(data)
 	if data.supposed_aspects then
 		advtrains.interlocking.load_supposed_aspects(data.supposed_aspects)
 	end
+	if data.distant then
+		advtrains.distant.load(data.distant)
+	end
 	
 	--COMPATIBILITY to Signal aspect format
 	-- TODO remove in time...
@@ -177,6 +180,7 @@ function ildb.save()
 		influence_points = influence_points,
 		npr_rails = advtrains.interlocking.npr_rails,
 		supposed_aspects = advtrains.interlocking.save_supposed_aspects(),
+		distant = advtrains.distant.save(),
 	}
 end
 
diff --git a/advtrains_interlocking/demosignals.lua b/advtrains_interlocking/demosignals.lua
index 1c1b8b2..de6926a 100644
--- a/advtrains_interlocking/demosignals.lua
+++ b/advtrains_interlocking/demosignals.lua
@@ -50,7 +50,7 @@ minetest.register_node("advtrains_interlocking:ds_danger", {
 	},
 	on_rightclick = advtrains.interlocking.signal_rc_handler,
 	can_dig = advtrains.interlocking.signal_can_dig,
-	after_dig_node = advtrains.interlocking.signal_after_dig,
+	after_destruct = advtrains.interlocking.signal_after_dig,
 })
 minetest.register_node("advtrains_interlocking:ds_free", {
 	description = "Demo signal at Free",
@@ -71,7 +71,7 @@ minetest.register_node("advtrains_interlocking:ds_free", {
 	},
 	on_rightclick = advtrains.interlocking.signal_rc_handler,
 	can_dig = advtrains.interlocking.signal_can_dig,
-	after_dig_node = advtrains.interlocking.signal_after_dig,
+	after_destruct = advtrains.interlocking.signal_after_dig,
 })
 minetest.register_node("advtrains_interlocking:ds_slow", {
 	description = "Demo signal at Slow",
@@ -92,6 +92,6 @@ minetest.register_node("advtrains_interlocking:ds_slow", {
 	},
 	on_rightclick = advtrains.interlocking.signal_rc_handler,
 	can_dig = advtrains.interlocking.signal_can_dig,
-	after_dig_node = advtrains.interlocking.signal_after_dig,
+	after_destruct = advtrains.interlocking.signal_after_dig,
 })
 
diff --git a/advtrains_interlocking/distant.lua b/advtrains_interlocking/distant.lua
new file mode 100644
index 0000000..ffa9e08
--- /dev/null
+++ b/advtrains_interlocking/distant.lua
@@ -0,0 +1,137 @@
+local db_distant = {}
+local db_distant_of = {}
+
+local A = advtrains.interlocking.aspects
+local pts = advtrains.encode_pos
+local stp = advtrains.decode_pos
+
+local function db_load(x)
+	if type(x) ~= "table" then
+		return
+	end
+	db_distant = x.distant
+	db_distant_of = x.distant_of
+end
+
+local function db_save()
+	return {
+		distant = db_distant,
+		distant_of = db_distant_of,
+	}
+end
+
+local update_signal, update_main, update_dst
+
+local function unassign_dst(dst, force)
+	local pts_dst = pts(dst)
+	local main = db_distant_of[pts_dst]
+	db_distant_of[pts_dst] = nil
+	if main then
+		local pts_main = main[1]
+		local t = db_distant[pts_main]
+		if t then
+			t[pts_dst] = nil
+		end
+	end
+	if not force then
+		update_dst(dst)
+	end
+end
+
+local function unassign_main(main, force)
+	local pts_main = pts(main)
+	local t = db_distant[pts_main]
+	if not t then
+		return
+	end
+	for pts_dst in pairs(t) do
+		local realmain = db_distant_of[pts_dst]
+		if realmain and realmain[1] == pts_main then
+			db_distant_of[pts_dst] = nil
+			if not force then
+				local dst = stp(pts_dst)
+				update_dst(dst)
+			end
+		end
+	end
+	db_distant[pts_main] = nil
+end
+
+local function unassign_all(pos, force)
+	unassign_main(pos)
+	unassign_dst(pos, force)
+end
+
+local function assign(main, dst, by)
+	local pts_main = pts(main)
+	local pts_dst = pts(dst)
+	local t = db_distant[pts_main]
+	if not t then
+		t = {}
+		db_distant[pts_main] = t
+	end
+	if not by then
+		by = "manual"
+	end
+	unassign_dst(dst, true)
+	t[pts_dst] = by
+	db_distant_of[pts_dst] = {pts_main, by}
+	update_dst(dst)
+end
+
+local function pre_occupy(dst, by)
+	local pts_dst = pts(dst)
+	unassign_dst(dst)
+	db_distant_of[pts_dst] = {nil, by}
+end
+
+local function get_distant(main)
+	local pts_main = pts(main)
+	return db_distant[pts_main] or {}
+end
+
+local function get_main(dst)
+	local pts_dst = pts(dst)
+	local main = db_distant_of[pts_dst]
+	if not main then
+		return
+	end
+	if main[1] then
+		return stp(main[1]), unpack(main, 2)
+	else
+		return unpack(main)
+	end
+end
+
+update_main = function(main)
+	local pts_main = pts(main)
+	local t = get_distant(main)
+	for pts_dst in pairs(t) do
+		local dst = stp(pts_dst)
+		advtrains.interlocking.signal_readjust_aspect(dst)
+	end
+end
+
+update_dst = function(dst)
+	advtrains.interlocking.signal_readjust_aspect(dst)
+end
+
+update_signal = function(pos)
+	update_main(pos)
+	update_dst(pos)
+end
+
+advtrains.distant = {
+	load = db_load,
+	save = db_save,
+	assign = assign,
+	unassign_dst = unassign_dst,
+	unassign_main = unassign_main,
+	unassign_all = unassign_all,
+	get_distant = get_distant,
+	get_dst = get_distant,
+	get_main = get_main,
+	update_main = update_main,
+	update_dst = update_dst,
+	update_signal = update_signal,
+}
diff --git a/advtrains_interlocking/distant_ui.lua b/advtrains_interlocking/distant_ui.lua
new file mode 100644
index 0000000..4ec2255
--- /dev/null
+++ b/advtrains_interlocking/distant_ui.lua
@@ -0,0 +1,76 @@
+local F = advtrains.formspec
+local D = advtrains.distant
+local I = advtrains.interlocking
+
+function advtrains.interlocking.show_distant_signal_form(pos, pname)
+	local form = {"size[7,7]"}
+	form[#form+1] = advtrains.interlocking.make_signal_formspec_tabheader(pname, pos, 7, 3)
+	local main, set_by = D.get_main(pos)
+	if main then
+		local pts_main = minetest.pos_to_string(main)
+		form[#form+1] = F.S_label(0.5, 0.5, "This signal is a distant signal of @1.", pts_main)
+		if set_by == "manual" then
+			form[#form+1] = F.S_label(0.5, 1, "The assignment is made manually.")
+		elseif set_by == "routesetting" then
+			form[#form+1] = F.S_label(0.5, 1, "The assignment is made by the routesetting system.")
+		end
+	else
+		form[#form+1] = F.S_label(0.5, 0.5, "This signal is not assigned to a main signal.")
+		form[#form+1] = F.S_label(0.5, 1, "The distant aspect of the signal is not used.")
+	end
+	if set_by ~= nil then
+		form[#form+1] = F.S_button_exit(0.5, 1.5, 3, 1, "unassign_dst", "Unassign")
+		form[#form+1] = F.S_button_exit(3.5, 1.5, 3, 1, "assign_dst", "Reassign")
+	else
+		form[#form+1] = F.S_button_exit(0.5, 1.5, 6, 1, "assign_dst", "Assign")
+	end
+	minetest.show_formspec(pname, "advtrains:distant_" .. minetest.pos_to_string(pos), table.concat(form))
+end
+
+local signal_pos = {}
+local function init_signal_assignment(pname, pos)
+	if not minetest.check_player_privs(pname, "interlocking") then
+		minetest.chat_send_player(pname, attrans("This operation is not allowed without the @1 privilege.", "interlocking"))
+		return
+	end
+	signal_pos[pname] = pos
+	minetest.chat_send_player(pname, attrans("Please punch the signal to use as the main signal."))
+end
+
+minetest.register_on_punchnode(function(pos, node, player, pointed_thing)
+	local pname = player:get_player_name()
+	if not minetest.check_player_privs(pname, "interlocking") then
+		return
+	end
+	local spos = signal_pos[pname]
+	if not spos then
+		return
+	end
+	signal_pos[pname] = nil
+	local is_signal = minetest.get_item_group(node.name, "advtrains_signal") >= 2
+	if not is_signal then
+		minetest.chat_send_player(pname, attrans("Incompatible signal."))
+		return
+	end
+	minetest.chat_send_player(pname, attrans("Successfully assigned signal."))
+	D.assign(pos, spos, "manual")
+end)
+
+minetest.register_on_player_receive_fields(function(player, formname, fields)
+	local pname = player:get_player_name()
+	local pos = minetest.string_to_pos(string.match(formname, "^advtrains:distant_(.+)$") or "")
+	if not pos then
+		return
+	end
+	if not minetest.check_player_privs(pname, "interlocking") then
+		return
+	end
+	if advtrains.interlocking.handle_signal_formspec_tabheader_fields(pname, fields) then
+		return true
+	end
+	if fields.unassign_dst then
+		D.unassign_dst(pos)
+	elseif fields.assign_dst then
+		init_signal_assignment(pname, pos)
+	end
+end)
diff --git a/advtrains_interlocking/init.lua b/advtrains_interlocking/init.lua
index d0b75a8..908d998 100644
--- a/advtrains_interlocking/init.lua
+++ b/advtrains_interlocking/init.lua
@@ -15,6 +15,9 @@ local modpath = minetest.get_modpath(minetest.get_current_modname()) .. DIR_DELI
 advtrains.interlocking.aspects = dofile(modpath.."signal_aspects.lua")
 
 dofile(modpath.."database.lua")
+dofile(modpath.."distant.lua")
+dofile(modpath.."distant_ui.lua")
+dofile(modpath.."signal_aspect_accessors.lua")
 dofile(modpath.."signal_api.lua")
 dofile(modpath.."signal_aspect_ui.lua")
 dofile(modpath.."demosignals.lua")
diff --git a/advtrains_interlocking/routesetting.lua b/advtrains_interlocking/routesetting.lua
index 67efaea..f1b4455 100644
--- a/advtrains_interlocking/routesetting.lua
+++ b/advtrains_interlocking/routesetting.lua
@@ -45,6 +45,7 @@ function ilrs.set_route(signal, route, try)
 	local rtename = route.name
 	local signalname = ildb.get_tcbs(signal).signal_name
 	local c_tcbs, c_ts_id, c_ts, c_rseg, c_lckp
+	local signals = {}
 	while c_sigd and i<=#route do
 		c_tcbs = ildb.get_tcbs(c_sigd)
 		if not c_tcbs then
@@ -115,6 +116,7 @@ function ilrs.set_route(signal, route, try)
 				c_tcbs.aspect = route.aspect or advtrains.interlocking.GENERIC_FREE
 				c_tcbs.route_origin = signal
 				advtrains.interlocking.update_signal_aspect(c_tcbs)
+				signals[#signals+1] = c_tcbs.signal
 			end
 		end
 		-- advance
@@ -122,6 +124,25 @@ function ilrs.set_route(signal, route, try)
 		c_sigd = c_rseg.next
 		i = i + 1
 	end
+
+	-- Distant signaling
+	local lastsig = nil
+	if c_sigd then
+		local e_tcbs = ildb.get_tcbs(c_sigd)
+		local pos = e_tcbs and e_tcbs.signal
+		if pos then
+			lastsig = pos
+		end
+	end
+	for i = #signals, 1, -1 do
+		if lastsig then
+			local pos = signals[i]
+			local _, assigned_by = advtrains.distant.get_main(pos)
+			if assigned_by ~= "manual" then
+				advtrains.distant.assign(lastsig, signals[i], "routesetting")
+			end
+		end
+	end
 	
 	return true
 end
diff --git a/advtrains_interlocking/signal_api.lua b/advtrains_interlocking/signal_api.lua
index 5b3baf8..1fd4e34 100644
--- a/advtrains_interlocking/signal_api.lua
+++ b/advtrains_interlocking/signal_api.lua
@@ -167,7 +167,6 @@ This function will query get_aspect to retrieve the new aspect.
 
 local DANGER = {
 	main = 0,
-	dst = false,
 	shunt = false,
 }
 advtrains.interlocking.DANGER = DANGER
@@ -178,8 +177,6 @@ advtrains.interlocking.GENERIC_FREE = {
 	dst = false,
 }
 
-local supposed_aspects = {}
-
 local function convert_aspect_if_necessary(asp)
 	if type(asp.main) == "table" then
 		local newasp = {} 
@@ -200,24 +197,7 @@ local function convert_aspect_if_necessary(asp)
 	end
 	return asp
 end
-
-function advtrains.interlocking.load_supposed_aspects(tbl)
-	if tbl then
-		supposed_aspects = tbl
-	end
-end
-
-function advtrains.interlocking.save_supposed_aspects()
-	return supposed_aspects
-end
-
-local function set_supposed_aspect(pos, asp)
-	supposed_aspects[advtrains.roundfloorpts(pos)] = asp
-end
-
-local function get_supposed_aspect(pos)
-	return supposed_aspects[advtrains.roundfloorpts(pos)]
-end
+advtrains.interlocking.signal_convert_aspect_if_necessary = convert_aspect_if_necessary
 
 function advtrains.interlocking.update_signal_aspect(tcbs)
 	if tcbs.signal then
@@ -233,27 +213,8 @@ end
 function advtrains.interlocking.signal_after_dig(pos)
 	-- clear influence point
 	advtrains.interlocking.db.clear_ip_by_signalpos(pos)
-	set_supposed_aspect(pos, nil)
-end
-
-function advtrains.interlocking.signal_set_aspect(pos, asp)
-	asp = convert_aspect_if_necessary(asp)
-	local node=advtrains.ndb.get_node(pos)
-	local ndef=minetest.registered_nodes[node.name]
-	if ndef and ndef.advtrains and ndef.advtrains.set_aspect then
-		local oldasp = advtrains.interlocking.signal_get_aspect(pos) or DANGER
-		local suppasp = advtrains.interlocking.signal_get_supported_aspects(pos) or {}
-		local newasp = asp
-		if suppasp.type == 2 then
-			asp = advtrains.interlocking.aspects.type1_to_type2main(asp, suppasp.group)
-		end
-		set_supposed_aspect(pos, newasp)
-		ndef.advtrains.set_aspect(pos, node, asp)
-		local aspect_changed = advtrains.interlocking.aspects.not_equalp(oldasp, newasp)
-		if aspect_changed then
-			advtrains.interlocking.signal_on_aspect_changed(pos)
-		end
-	end
+	advtrains.interlocking.signal_clear_aspect(pos)
+	advtrains.distant.unassign_all(pos, true)
 end
 
 -- should be called when aspect has changed on this signal.
@@ -312,46 +273,6 @@ function advtrains.interlocking.signal_get_supposed_aspect(pos)
 	return DANGER;
 end
 
--- Returns the actual aspect of the signal at position, as returned by the nodedef.
--- returns nil when there's no signal at the position
-function advtrains.interlocking.signal_get_real_aspect(pos)
-	local node=advtrains.ndb.get_node(pos)
-	local ndef=minetest.registered_nodes[node.name]
-	if ndef and ndef.advtrains and ndef.advtrains.get_aspect then
-		local asp = ndef.advtrains.get_aspect(pos, node)
-		local suppasp = advtrains.interlocking.signal_get_supported_aspects(pos) or {}
-		if suppasp.type == 2 then
-			asp = advtrains.interlocking.aspects.type2main_to_type1(suppasp.group, asp)
-		end
-		if not asp then asp = DANGER end
-		asp = convert_aspect_if_necessary(asp)
-		return asp
-	end
-	return nil
-end
-
--- Returns the signal aspect as reported in the suppasp table.
-function advtrains.interlocking.signal_get_aspect(pos)
-	local asp = get_supposed_aspect(pos)
-	if not asp then
-		asp = advtrains.interlocking.signal_get_real_aspect(pos)
-		set_supposed_aspect(pos, asp)
-	end
-	return asp
-end
-
--- Returns the "supported_aspects" of the signal at position, as returned by the nodedef.
--- returns nil when there's no signal at the position
-function advtrains.interlocking.signal_get_supported_aspects(pos)
-	local node=advtrains.ndb.get_node(pos)
-	local ndef=minetest.registered_nodes[node.name]
-	if ndef and ndef.advtrains and ndef.advtrains.supported_aspects then
-		local asp = ndef.advtrains.supported_aspects
-		return asp
-	end
-	return nil
-end
-
 local players_assign_ip = {}
 
 local function ipmarker(ipos, connid)
diff --git a/advtrains_interlocking/signal_aspect_accessors.lua b/advtrains_interlocking/signal_aspect_accessors.lua
new file mode 100644
index 0000000..02a03ea
--- /dev/null
+++ b/advtrains_interlocking/signal_aspect_accessors.lua
@@ -0,0 +1,127 @@
+local A = advtrains.interlocking.aspects
+local D = advtrains.distant
+local I = advtrains.interlocking
+local N = advtrains.ndb
+local pts = advtrains.roundfloorpts
+
+local get_aspect
+
+local supposed_aspects = {}
+
+function I.load_supposed_aspects(tbl)
+	if tbl then
+		supposed_aspects = tbl
+	end
+end
+
+function I.save_supposed_aspects()
+	return supposed_aspects
+end
+
+local function get_supposed_aspect(pos)
+	return supposed_aspects[pts(pos)]
+end
+
+local function set_supposed_aspect(pos, asp)
+	supposed_aspects[pts(pos)] = asp
+end
+
+local function get_ndef(pos)
+	local node = N.get_node(pos)
+	return minetest.registered_nodes[node.name] or {}
+end
+
+local function get_supported_aspects(pos)
+	local ndef = get_ndef(pos)
+	if ndef.advtrains and ndef.advtrains.supported_aspects then
+		return ndef.advtrains.supported_aspects
+	end
+	return nil
+end
+
+local function adjust_aspect(pos, asp)
+	asp = table.copy(I.signal_convert_aspect_if_necessary(asp))
+
+	local mainpos = D.get_main(pos)
+	local nxtasp
+	if asp.main ~= 0 and mainpos then
+		nxtasp = get_aspect(mainpos)
+		asp.dst = nxtasp.main
+	else
+		asp.dst = nil
+	end
+
+	local suppasp = get_supported_aspects(pos)
+	if not suppasp then
+		return asp, asp
+	end
+	local stype = suppasp.type
+	if stype == 2 then
+		local group = suppasp.group
+		local name
+		if asp.main ~= 0 and nxtasp and nxtasp.type2group == group and nxtasp.type2name then
+			name = A.get_type2_dst(group, nxtasp.type2name)
+		else
+			name = A.type1_to_type2main(asp, group)
+		end
+		asp.type2group = group
+		asp.type2name = name
+		return asp, name
+	end
+	asp.type2name = nil
+	asp.type2group = nil
+	return asp, asp
+end
+
+local function get_real_aspect(pos)
+	local ndef = get_ndef(pos)
+	if ndef.advtrains and ndef.advtrains.get_aspect then
+		local asp = ndef.advtrains.get_aspect(pos, node) or I.DANGER
+		local suppasp = get_supported_aspects(pos)
+		if suppasp.type == 2 then
+			asp = A.type2main_to_type1(suppasp.group, asp)
+		end
+		return adjust_aspect(pos, asp)
+	end
+	return nil
+end
+
+get_aspect = function(pos)
+	local asp = get_supposed_aspect(pos)
+	if not asp then
+		asp = get_real_aspect(pos)
+		set_supposed_aspect(pos, asp)
+	end
+	return asp
+end
+
+local function set_aspect(pos, asp)
+	local node = N.get_node(pos)
+	local ndef = minetest.registered_nodes[node.name]
+	if ndef and ndef.advtrains and ndef.advtrains.set_aspect then
+		local oldasp = I.signal_get_aspect(pos) or DANGER
+		local newasp, aspval = adjust_aspect(pos, asp)
+		set_supposed_aspect(pos, newasp)
+		ndef.advtrains.set_aspect(pos, node, aspval)
+		local aspect_changed = A.not_equalp(oldasp, newasp)
+		if aspect_changed then
+			I.signal_on_aspect_changed(pos)
+			D.update_main(pos)
+		end
+	end
+end
+
+local function clear_aspect(pos)
+	set_supposed_aspect(pos, nil)
+end
+
+local function readjust_aspect(pos)
+	set_aspect(pos, get_aspect(pos))
+end
+
+I.signal_get_supported_aspects = get_supported_aspects
+I.signal_get_real_aspect = get_real_aspect
+I.signal_get_aspect = get_aspect
+I.signal_set_aspect = set_aspect
+I.signal_clear_aspect = clear_aspect
+I.signal_readjust_aspect = readjust_aspect
diff --git a/advtrains_interlocking/signal_aspect_ui.lua b/advtrains_interlocking/signal_aspect_ui.lua
index 4b41187..30b5165 100644
--- a/advtrains_interlocking/signal_aspect_ui.lua
+++ b/advtrains_interlocking/signal_aspect_ui.lua
@@ -43,7 +43,7 @@ local function describe_supported_aspects_t1(suppasp, isasp)
 	local entries = {}
 	local selid = 1
 	for idx, spv in ipairs(suppasp.main) do
-		if isasp and spv == isasp.main then
+		if isasp and spv == (isasp.main or false) then
 			selid = idx
 		end
 		entries[idx] = describe_t1_main_aspect(spv)
@@ -67,7 +67,7 @@ local function describe_supported_aspects_t1(suppasp, isasp)
 	entries = {}
 	selid = 1
 	for idx, spv in ipairs(suppasp.dst) do
-		if isasp and spv == isasp.dst then
+		if isasp and spv == (isasp.dst or false) then
 			selid = idx
 		end
 		entries[idx] = describe_t1_distant_aspect(spv)
@@ -102,6 +102,8 @@ local function handle_signal_formspec_tabheader_fields(pname, fields)
 		advtrains.interlocking.show_signal_form(pos, node, pname)
 	elseif n == 2 then
 		advtrains.interlocking.show_ip_form(pos, pname)
+	elseif n == 3 then
+		advtrains.interlocking.show_distant_signal_form(pos, pname)
 	end
 	return true
 end
diff --git a/advtrains_interlocking/signal_aspects.lua b/advtrains_interlocking/signal_aspects.lua
index eebb4ba..2866ae1 100644
--- a/advtrains_interlocking/signal_aspects.lua
+++ b/advtrains_interlocking/signal_aspects.lua
@@ -44,6 +44,27 @@ local function get_type2_definition(name)
 	return type2defs[name]
 end
 
+local function get_type2_danger(group)
+	local def = type2defs[group]
+	if not def then
+		return nil
+	end
+	local main = def.main
+	return main[#main]
+end
+
+local function get_type2_dst(group, name)
+	local def = type2defs[group]
+	if not def then
+		return nil
+	end
+	local aspidx = name
+	if type(name) ~= "number" then
+		aspidx = def.main[name] or 1
+	end
+	return def.main[math.max(1, aspidx-1)].name
+end
+
 local function type2main_to_type1(name, asp)
 	local def = type2defs[name]
 	if not def then
@@ -53,7 +74,7 @@ local function type2main_to_type1(name, asp)
 	if type(asp) == "number" then
 		aspidx = asp
 	else
-		aspidx = def.main[asp]
+		aspidx = def.main[asp] or 2
 	end
 	local asptbl = def.main[aspidx]
 	if not asptbl then
@@ -62,11 +83,13 @@ local function type2main_to_type1(name, asp)
 	if type(asp) == "number" then
 		asp = asptbl.name
 	end
+	local dst = def.main[math.min(#def.main, aspidx+1)].main
 
 	local t = {
 		main = asptbl.main,
 		type2name = asp,
 		type2group = name,
+		dst = dst,
 	}
 	if aspidx > 1 and aspidx < #asptbl then
 		t.dst = asptbl[aspidx+1].main
@@ -116,6 +139,7 @@ end
 return {
 	register_type2 = register_type2,
 	get_type2_definition = get_type2_definition,
+	get_type2_dst = get_type2_dst,
 	type2main_to_type1 = type2main_to_type1,
 	type1_to_type2main = type1_to_type2main,
 	equalp = equalp,
diff --git a/advtrains_interlocking/signal_main_ui.lua b/advtrains_interlocking/signal_main_ui.lua
deleted file mode 100644
index e69de29..0000000
diff --git a/advtrains_interlocking/spec/basic_signalling_spec.lua b/advtrains_interlocking/spec/basic_signalling_spec.lua
new file mode 100644
index 0000000..0b79972
--- /dev/null
+++ b/advtrains_interlocking/spec/basic_signalling_spec.lua
@@ -0,0 +1,87 @@
+--[[
+This file tests a large part of the signaling system, as a lot of tests for the
+signaling system tend to overlap for various parts of the system.
+]]
+
+require("mineunit")
+mineunit("core")
+
+_G.advtrains = {
+	interlocking = {
+		aspects = fixture("../../signal_aspects"),
+	},
+	ndb = {
+		get_node = minetest.get_node,
+		swap_node = minetest.swap_node,
+	}
+}
+
+fixture("advtrains_helpers")
+fixture("../../database")
+sourcefile("distant")
+sourcefile("signal_api")
+sourcefile("signal_aspect_accessors")
+fixture("../../demosignals")
+
+local D = advtrains.distant
+local I = advtrains.interlocking
+
+local stub_aspect_t1 = {
+	free = {main = -1},
+	slow = {main = 6},
+	danger = {main = 0, shunt = false},
+}
+local stub_pos_t1 = {}
+for i = 1, 3 do
+	stub_pos_t1[i] = {x = 1, y = 0, z = i}
+end
+
+world.layout {
+	{stub_pos_t1[1], "advtrains_interlocking:ds_danger"},
+	{stub_pos_t1[2], "advtrains_interlocking:ds_slow"},
+	{stub_pos_t1[3], "advtrains_interlocking:ds_free"},
+}
+
+describe("API for supposed signal aspects", function()
+	it("should load and save data properly", function()
+		local tbl = {_foo = true}
+		I.load_supposed_aspects(tbl)
+		assert.same(tbl, I.save_supposed_aspects())
+	end)
+	it("should set and get type 1 signals properly", function ()
+		local pos = stub_pos_t1[2]
+		local asp = stub_aspect_t1.slow
+		local newasp = { main = math.random(1,5) }
+		assert.same(asp, I.signal_get_aspect(pos))
+		I.signal_set_aspect(pos, newasp)
+		assert.same(newasp, I.signal_get_aspect(pos))
+		assert.same(asp, I.signal_get_real_aspect(pos))
+		I.signal_set_aspect(pos, asp)
+	end)
+end)
+
+describe("Distant signaling", function()
+	it("should assign distant signals and set the distant aspect correspondingly", function()
+		for i = 1, 2 do
+			D.assign(stub_pos_t1[i], stub_pos_t1[i+1])
+		end
+		assert.same(stub_aspect_t1.danger, I.signal_get_aspect(stub_pos_t1[1]))
+		assert.same({main = 6, dst = 0}, I.signal_get_aspect(stub_pos_t1[2]))
+		assert.same({main = -1, dst = 6}, I.signal_get_aspect(stub_pos_t1[3]))
+	end)
+	it("should report assignments properly", function()
+		assert.same({stub_pos_t1[1], "manual"}, {D.get_main(stub_pos_t1[2])})
+		assert.same({[advtrains.encode_pos(stub_pos_t1[3])] = "manual"}, D.get_dst(stub_pos_t1[2]))
+	end)
+	it("should update distant aspects automatically", function()
+		I.signal_set_aspect(stub_pos_t1[2], {main = 2, dst = -1})
+		assert.same({main = 2, dst = 0}, I.signal_get_aspect(stub_pos_t1[2]))
+		assert.same({main = -1, dst = 2}, I.signal_get_aspect(stub_pos_t1[3]))
+	end)
+	it("should unassign signals when one is removed", function()
+		world.set_node(stub_pos_t1[2], "air")
+		assert.same({}, D.get_dst(stub_pos_t1[1]))
+		assert.same({}, {D.get_main(stub_pos_t1[3])})
+		assert.same(stub_aspect_t1.free, I.signal_get_aspect(stub_pos_t1[3]))
+	end)
+end)
diff --git a/advtrains_interlocking/spec/signal_api_spec.lua b/advtrains_interlocking/spec/signal_api_spec.lua
deleted file mode 100644
index cd7a1d1..0000000
--- a/advtrains_interlocking/spec/signal_api_spec.lua
+++ /dev/null
@@ -1,49 +0,0 @@
-require("mineunit")
-
-mineunit("core")
-
-_G.advtrains = {
-	interlocking = {
-		aspects = fixture("../../signal_aspects"),
-	},
-	ndb = {
-		get_node = minetest.get_node,
-	}
-}
-
-fixture("advtrains_helpers")
-fixture("../../database")
-sourcefile("signal_api")
-
-local stub_aspect_t1 = { main = math.random() }
-local stub_pos_t1 = {x = 1, y = 0, z = 1}
-
-minetest.register_node(":stubsignal_t1", {
-	advtrains = {
-		supported_aspects = {},
-		get_aspect = function () return stub_aspect_t1 end,
-		set_aspect = function () end,
-	},
-	groups = { advtrains_signal = 2 },
-})
-
-world.layout {
-	{stub_pos_t1, "stubsignal_t1"},
-}
-
-describe("API for supposed signal aspects", function()
-	it("should load and save data properly", function()
-		local tbl = {_foo = true}
-		advtrains.interlocking.load_supposed_aspects(tbl)
-		assert.same(tbl, advtrains.interlocking.save_supposed_aspects())
-	end)
-	it("should set and get type 1 signals properly", function ()
-		local pos = stub_pos_t1
-		local asp = stub_aspect_t1
-		local newasp = { dst = math.random() }
-		assert.same(asp, advtrains.interlocking.signal_get_aspect(pos))
-		advtrains.interlocking.signal_set_aspect(pos, newasp)
-		assert.same(newasp, advtrains.interlocking.signal_get_aspect(pos))
-		assert.same(asp, advtrains.interlocking.signal_get_real_aspect(pos))
-	end)
-end)
diff --git a/advtrains_interlocking/tcb_ts_ui.lua b/advtrains_interlocking/tcb_ts_ui.lua
index b3b8221..9f88296 100755
--- a/advtrains_interlocking/tcb_ts_ui.lua
+++ b/advtrains_interlocking/tcb_ts_ui.lua
@@ -14,6 +14,7 @@ local lntrans = { "A", "B" }
 local function sigd_to_string(sigd)
 	return minetest.pos_to_string(sigd.p).." / "..lntrans[sigd.s]
 end
+advtrains.interlocking.sigd_to_string = sigd_to_string
 
 minetest.register_node("advtrains_interlocking:tcb_node", {
 	drawtype = "mesh",
@@ -608,7 +609,7 @@ function advtrains.interlocking.show_signalling_form(sigd, pname, sel_rte, calle
 	if not tcbs.signal_name then tcbs.signal_name = "Signal at "..minetest.pos_to_string(sigd.p) end
 	if not tcbs.routes then tcbs.routes = {} end
 	
-	local form = "size[7,9.75]label[0.5,0.5;Signal at "..minetest.pos_to_string(sigd.p).."]"
+	local form = "size[7,10.25]label[0.5,0.5;Signal at "..minetest.pos_to_string(sigd.p).."]"
 	form = form .. advtrains.interlocking.make_signal_formspec_tabheader(pname, tcbs.signal, 7, 1)
 	form = form.."field[0.8,1.5;5.2,1;name;Signal name;"..minetest.formspec_escape(tcbs.signal_name).."]"
 	form = form.."button[5.5,1.2;1,1;setname;Set]"
@@ -670,6 +671,7 @@ function advtrains.interlocking.show_signalling_form(sigd, pname, sel_rte, calle
 				form = form.."button[0.5,8;2.5,1;newroute;New Route]"
 				form = form.."button[  3,8;2.5,1;unassign;Unassign Signal]"
 				form = form..string.format("checkbox[0.5,8.75;ars;Automatic routesetting;%s]", not tcbs.ars_disabled)
+				form = form..string.format("checkbox[0.5,9.25;dst;Distant signalling;%s]", not tcbs.nodst)
 			end
 		elseif sigd_equal(tcbs.route_origin, sigd) then
 			-- something has gone wrong: tcbs.routeset should have been set...
@@ -796,6 +798,10 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 		if fields.ars then
 			tcbs.ars_disabled = not minetest.is_yes(fields.ars)
 		end
+
+		if fields.dst then
+			tcbs.nodst = not minetest.is_yes(fields.dst)
+		end
 		
 		if fields.auto then
 			tcbs.route_auto = true
-- 
cgit v1.2.3


From 30a0f862488a0cb67f9a8e2aecaf17797ad44a93 Mon Sep 17 00:00:00 2001
From: "Y. Wang" <yw05@forksworld.de>
Date: Mon, 24 Oct 2022 13:51:03 +0200
Subject: Properly handle repeater signals

---
 advtrains_interlocking/signal_aspect_accessors.lua | 41 +++++++++++++++++-----
 advtrains_interlocking/signal_aspect_ui.lua        |  2 +-
 advtrains_interlocking/signal_aspects.lua          | 40 +++++++++++++--------
 .../spec/basic_signalling_spec.lua                 |  2 +-
 advtrains_interlocking/tcb_ts_ui.lua               | 28 ++++++++-------
 advtrains_signals_japan/init.lua                   |  1 +
 6 files changed, 77 insertions(+), 37 deletions(-)

(limited to 'advtrains_interlocking/signal_aspect_ui.lua')

diff --git a/advtrains_interlocking/signal_aspect_accessors.lua b/advtrains_interlocking/signal_aspect_accessors.lua
index a1cbd4e..060f923 100644
--- a/advtrains_interlocking/signal_aspect_accessors.lua
+++ b/advtrains_interlocking/signal_aspect_accessors.lua
@@ -4,6 +4,27 @@ local I = advtrains.interlocking
 local N = advtrains.ndb
 local pts = advtrains.roundfloorpts
 
+local signal_aspect_metatable = {
+	__tostring = function(asp)
+		local st = {}
+		if asp.type2group and asp.type2name then
+			table.insert(st, string.format("%q in group %q", asp.type2name, asp.type2group))
+		end
+		if asp.main then
+			table.insert(st, string.format("current %d", asp.main))
+		end
+		if asp.main ~= 0 then
+			if asp.dst then
+				table.insert(st, string.format("next %d", asp.dst))
+			end
+			if asp.proceed_as_main then
+				table.insert(st, "proceed as main")
+			end
+		end
+		return string.format("[%s]", table.concat(st, ", "))
+	end,
+}
+
 local get_aspect
 
 local supposed_aspects = {}
@@ -11,6 +32,9 @@ local supposed_aspects = {}
 function I.load_supposed_aspects(tbl)
 	if tbl then
 		supposed_aspects = tbl
+		for _, v in pairs(tbl) do
+			setmetatable(v, signal_aspect_metatable)
+		end
 	end
 end
 
@@ -41,11 +65,14 @@ end
 
 local function adjust_aspect(pos, asp)
 	asp = table.copy(I.signal_convert_aspect_if_necessary(asp))
+	setmetatable(asp, signal_aspect_metatable)
 
 	local mainpos = D.get_main(pos)
 	local nxtasp
-	if asp.main ~= 0 and mainpos then
+	if mainpos then
 		nxtasp = get_aspect(mainpos)
+	end
+	if asp.main ~= 0 and mainpos then
 		asp.dst = nxtasp.main
 	else
 		asp.dst = nil
@@ -59,7 +86,10 @@ local function adjust_aspect(pos, asp)
 	if stype == 2 then
 		local group = suppasp.group
 		local name
-		if asp.main ~= 0 and nxtasp and nxtasp.type2group == group and nxtasp.type2name then
+		if suppasp.dst_shift and nxtasp then
+			asp.main = nil
+			name = A.type1_to_type2main(nxtasp, group, suppasp.dst_shift)
+		elseif asp.main ~= 0 and nxtasp and nxtasp.type2group == group and nxtasp.type2name then
 			name = A.get_type2_dst(group, nxtasp.type2name)
 		else
 			name = A.type1_to_type2main(asp, group)
@@ -79,7 +109,7 @@ local function get_real_aspect(pos)
 		local asp = ndef.advtrains.get_aspect(pos, node) or I.DANGER
 		local suppasp = get_supported_aspects(pos)
 		if suppasp.type == 2 then
-			asp = A.type2main_to_type1(suppasp.group, asp)
+			asp = A.type2_to_type1(suppasp, asp)
 		end
 		return adjust_aspect(pos, asp)
 	end
@@ -108,11 +138,6 @@ local function set_aspect(pos, asp, skipdst)
 		if (not skipdst) and aspect_changed then
 			D.update_main(pos)
 		end
-		--[[
-		local dbgmsg = string.format("[%s]set_aspect(%s,%s,%s)", os.clock(), minetest.pos_to_string(pos), minetest.serialize(asp), tostring(skipdst))
-		dbgmsg = debug.traceback(dbgmsg, 2)
-		minetest.chat_send_all(dbgmsg)
-		--]]
 	end
 end
 
diff --git a/advtrains_interlocking/signal_aspect_ui.lua b/advtrains_interlocking/signal_aspect_ui.lua
index 30b5165..ccedb01 100644
--- a/advtrains_interlocking/signal_aspect_ui.lua
+++ b/advtrains_interlocking/signal_aspect_ui.lua
@@ -219,7 +219,7 @@ local function get_aspect_from_formspec_t1(suppasp, fields)
 end
 
 local function get_aspect_from_formspec_t2(suppasp, fields)
-	local asp = advtrains.interlocking.aspects.type2main_to_type1(suppasp.group, tonumber(fields.asp))
+	local asp = advtrains.interlocking.aspects.type2_to_type1(suppasp, tonumber(fields.asp))
 	return asp
 end
 
diff --git a/advtrains_interlocking/signal_aspects.lua b/advtrains_interlocking/signal_aspects.lua
index 5c4948b..c381fd2 100644
--- a/advtrains_interlocking/signal_aspects.lua
+++ b/advtrains_interlocking/signal_aspects.lua
@@ -67,7 +67,9 @@ local function get_type2_dst(group, name)
 	return def.main[math.max(1, aspidx-1)].name
 end
 
-local function type2main_to_type1(name, asp)
+local function type2_to_type1(suppasp, asp)
+	local name = suppasp.group
+	local shift = suppasp.dst_shift
 	local def = type2defs[name]
 	if not def then
 		return nil
@@ -78,18 +80,26 @@ local function type2main_to_type1(name, asp)
 	else
 		aspidx = def.main[asp] or 2
 	end
-	local asptbl = def.main[aspidx]
+	local realidx = math.min(#def.main, aspidx+(shift or 0))
+	local asptbl = def.main[realidx]
 	if not asptbl then
 		return nil
 	end
 	if type(asp) == "number" then
 		asp = asptbl.name
 	end
-	local dst = def.main[math.min(#def.main, aspidx+1)].main
+	local main, shunt, dst
+	if shift then
+		dst = asptbl.main
+	else
+		main = asptbl.main
+		shunt = asptbl.shunt
+		dst = def.main[math.min(#def.main, aspidx+1)].main
+	end
 
 	local t = {
-		main = asptbl.main,
-		shunt = asptbl.shunt,
+		main = main,
+		shunt = shunt,
 		proceed_as_main = asptbl.proceed_as_main,
 		type2name = asp,
 		type2group = name,
@@ -101,31 +111,28 @@ local function type2main_to_type1(name, asp)
 	return t
 end
 
-local function type1_to_type2main(asp, group)
+local function type1_to_type2main(asp, group, shift)
 	local def = type2defs[group]
 	if not def then
 		return nil
 	end
-	if group == asp.type2group and def.main[asp.type2name] then
-		return asp.type2name
-	end
 	local t_main = def.main
 	local idx
-	if not asp.main or asp.main == -1 then
+	if group == asp.type2group and t_main[asp.type2name] then
+		idx = t_main[asp.type2name]
+	elseif not asp.main or asp.main == -1 then
 		idx = 1
 	elseif asp.main == 0 then
 		idx = #t_main
 	else
-		idx = math.max(#t_main-1, 1)
+		idx = #t_main-1
 	end
-	return t_main[idx].name
+	return t_main[math.max(1, idx-(shift or 0))].name
 end
 
 local function equalp(asp1, asp2)
 	if asp1 == asp2 then -- same reference
 		return true
-	elseif asp1.type2group and asp1.type2group == asp2.type2group then -- type2 with the same group
-		return asp1.type2name == asp2.type2name
 	else
 		for _, k in pairs {"main", "shunt", "dst"} do
 			if asp1[k] ~= asp2[k] then
@@ -133,6 +140,9 @@ local function equalp(asp1, asp2)
 			end
 		end
 	end
+	if asp1.type2group and asp1.type2group == asp2.type2group then
+		return asp1.type2name == asp2.type2name
+	end
 	return true
 end
 
@@ -144,7 +154,7 @@ return {
 	register_type2 = register_type2,
 	get_type2_definition = get_type2_definition,
 	get_type2_dst = get_type2_dst,
-	type2main_to_type1 = type2main_to_type1,
+	type2_to_type1 = type2_to_type1,
 	type1_to_type2main = type1_to_type2main,
 	equalp = equalp,
 	not_equalp = not_equalp,
diff --git a/advtrains_interlocking/spec/basic_signalling_spec.lua b/advtrains_interlocking/spec/basic_signalling_spec.lua
index 0b79972..720b274 100644
--- a/advtrains_interlocking/spec/basic_signalling_spec.lua
+++ b/advtrains_interlocking/spec/basic_signalling_spec.lua
@@ -44,7 +44,7 @@ world.layout {
 
 describe("API for supposed signal aspects", function()
 	it("should load and save data properly", function()
-		local tbl = {_foo = true}
+		local tbl = {_foo = {}}
 		I.load_supposed_aspects(tbl)
 		assert.same(tbl, I.save_supposed_aspects())
 	end)
diff --git a/advtrains_interlocking/tcb_ts_ui.lua b/advtrains_interlocking/tcb_ts_ui.lua
index 9f88296..3898d73 100755
--- a/advtrains_interlocking/tcb_ts_ui.lua
+++ b/advtrains_interlocking/tcb_ts_ui.lua
@@ -198,20 +198,24 @@ minetest.register_on_punchnode(function(pos, node, player, pointed_thing)
 			if is_signal then
 				local ndef = minetest.registered_nodes[node.name]
 				if ndef and ndef.advtrains and ndef.advtrains.set_aspect then
-					local tcbs = ildb.get_tcbs(sigd)
-					if tcbs then
-						tcbs.signal = pos
-						if not tcbs.signal_name then
-							tcbs.signal_name = "Signal at "..minetest.pos_to_string(sigd.p)
+					if ndef.advtrains.supported_aspects and not ndef.advtrains.supported_aspects.dst_shift then
+						local tcbs = ildb.get_tcbs(sigd)
+						if tcbs then
+							tcbs.signal = pos
+							if not tcbs.signal_name then
+								tcbs.signal_name = "Signal at "..minetest.pos_to_string(sigd.p)
+							end
+							if not tcbs.routes then
+								tcbs.routes = {}
+							end
+							ildb.set_sigd_for_signal(pos, sigd)
+							minetest.chat_send_player(pname, "Configuring TCB: Successfully assigned signal.")
+							advtrains.interlocking.show_ip_form(pos, pname, true)
+						else
+							minetest.chat_send_player(pname, "Configuring TCB: Internal error, TCBS doesn't exist. Aborted.")
 						end
-						if not tcbs.routes then
-							tcbs.routes = {}
-						end
-						ildb.set_sigd_for_signal(pos, sigd)
-						minetest.chat_send_player(pname, "Configuring TCB: Successfully assigned signal.")
-						advtrains.interlocking.show_ip_form(pos, pname, true)
 					else
-						minetest.chat_send_player(pname, "Configuring TCB: Internal error, TCBS doesn't exist. Aborted.")
+						minetest.chat_send_player(pname, "Configuring TCB: Cannot use distant signal. Aborted.")
 					end
 				else
 					minetest.chat_send_player(pname, "Configuring TCB: Cannot use static signals for routesetting. Aborted.")
diff --git a/advtrains_signals_japan/init.lua b/advtrains_signals_japan/init.lua
index 2062a21..59640b1 100644
--- a/advtrains_signals_japan/init.lua
+++ b/advtrains_signals_japan/init.lua
@@ -401,6 +401,7 @@ for _, rtab in ipairs {
 					supported_aspects = {
 						type = 2,
 						group = siginfo.typename,
+						dst_shift = siginfo.isdst and 0,
 					},
 					get_aspect = function()
 						return asp
-- 
cgit v1.2.3


From 67efae9c9ad6f93aaa418d512c4ae1817eed6d24 Mon Sep 17 00:00:00 2001
From: "Y. Wang" <yw05@forksworld.de>
Date: Sun, 18 Dec 2022 11:01:26 +0100
Subject: Adjust signal aspect formspecs to be of similar size

---
 advtrains/formspec.lua                      | 10 +++++
 advtrains_interlocking/distant_ui.lua       |  8 ++--
 advtrains_interlocking/signal_api.lua       | 14 ++++---
 advtrains_interlocking/signal_aspect_ui.lua | 57 +++++++++++++++--------------
 4 files changed, 53 insertions(+), 36 deletions(-)

(limited to 'advtrains_interlocking/signal_aspect_ui.lua')

diff --git a/advtrains/formspec.lua b/advtrains/formspec.lua
index 58968da..743d3f3 100644
--- a/advtrains/formspec.lua
+++ b/advtrains/formspec.lua
@@ -17,6 +17,14 @@ local function S_button(x, y, w, h, id, ...)
 	return f_button(x, y, w, h, id, attrans(...))
 end
 
+local function f_checkbox(x, y, name, selected, label)
+	return sformat("checkbox[%f,%f;%s;%s;%s]", x, y, name, label, selected and "true" or "false")
+end
+
+local function S_checkbox(x, y, name, selected, ...)
+	return f_checkbox(x, y, name, selected, attrans(...))
+end
+
 local function f_button_exit(x, y, w, h, id, text)
 	return sformat("button_exit[%f,%f;%f,%f;%s;%s]", x, y, w, h, id, text)
 end
@@ -88,6 +96,8 @@ end
 return {
 	button = f_button,
 	S_button = S_button,
+	checkbox = f_checkbox,
+	S_checkbox = S_checkbox,
 	button_exit = f_button_exit,
 	S_button_exit = S_button_exit,
 	dropdown = f_dropdown,
diff --git a/advtrains_interlocking/distant_ui.lua b/advtrains_interlocking/distant_ui.lua
index e1e14b7..a7ff406 100644
--- a/advtrains_interlocking/distant_ui.lua
+++ b/advtrains_interlocking/distant_ui.lua
@@ -3,7 +3,7 @@ local D = advtrains.distant
 local I = advtrains.interlocking
 
 function advtrains.interlocking.show_distant_signal_form(pos, pname)
-	local form = {"size[7,7]"}
+	local form = {"size[7,6.5]"}
 	form[#form+1] = advtrains.interlocking.make_signal_formspec_tabheader(pname, pos, 7, 3)
 	local main, set_by = D.get_main(pos)
 	if main then
@@ -31,9 +31,9 @@ function advtrains.interlocking.show_distant_signal_form(pos, pname)
 		dstlist[#dstlist+1] = minetest.pos_to_string(advtrains.decode_pos(pos))
 	end
 	form[#form+1] = F.S_label(0.5, 2.5, "This signal has the following distant signals:")
-	form[#form+1] = F.textlist(0.5, 3, 4.5, 3.5, "dstlist", dstlist)
-	form[#form+1] = F.image_button_exit(5.5, 3.5, 1, 1, "cdb_add.png", "dst_add", "")
-	form[#form+1] = F.image_button_exit(5.5, 5, 1, 1, "cdb_clear.png", "dst_del", "")
+	form[#form+1] = F.textlist(0.5, 3, 4.5, 3, "dstlist", dstlist)
+	form[#form+1] = F.image_button_exit(5.5, 3.25, 1, 1, "cdb_add.png", "dst_add", "")
+	form[#form+1] = F.image_button_exit(5.5, 4.75, 1, 1, "cdb_clear.png", "dst_del", "")
 	minetest.show_formspec(pname, "advtrains:distant_" .. minetest.pos_to_string(pos), table.concat(form))
 end
 
diff --git a/advtrains_interlocking/signal_api.lua b/advtrains_interlocking/signal_api.lua
index 54202f0..8bb92bf 100644
--- a/advtrains_interlocking/signal_api.lua
+++ b/advtrains_interlocking/signal_api.lua
@@ -137,14 +137,18 @@ function advtrains.interlocking.show_ip_form(pos, pname, only_notset)
 	if not minetest.check_player_privs(pname, "interlocking") then
 		return
 	end
-	local form = "size[7,5]label[0.5,0.5;Signal at "..minetest.pos_to_string(pos).."]"
-	form = form .. advtrains.interlocking.make_signal_formspec_tabheader(pname, pos, 7, 2)
+	local form = "size[7,6.5]label[0.5,0.5;Signal at "..minetest.pos_to_string(pos).."]"
+	local node = advtrains.ndb.get_node(pos)
+	local ndef = minetest.registered_nodes[node.name] or {}
+	if ndef.advtrains and ndef.advtrains.set_aspect then
+		form = form .. advtrains.interlocking.make_signal_formspec_tabheader(pname, pos, 7, 2)
+	end
 	advtrains.interlocking.db.check_for_duplicate_ip(pos)
 	local pts, connid = advtrains.interlocking.db.get_ip_by_signalpos(pos)
 	if pts then
 		form = form.."label[0.5,1.5;Influence point is set at "..pts.."/"..connid.."]"
-		form = form.."button_exit[0.5,2.5;  5,1;set;Move]"
-		form = form.."button_exit[0.5,3.5;  5,1;clear;Clear]"
+		form = form.."button_exit[0.5,4.25;  6,1;set;Move]"
+		form = form.."button_exit[0.5,5.25;  6,1;clear;Clear]"
 		local ipos = minetest.string_to_pos(pts)
 		ipmarker(ipos, connid)
 	else
@@ -152,7 +156,7 @@ function advtrains.interlocking.show_ip_form(pos, pname, only_notset)
 		form = form.."label[0.5,2.0;It is recommended to set an influence point.]"
 		form = form.."label[0.5,2.5;This is the point where trains will obey the signal.]"
 		
-		form = form.."button_exit[0.5,3.5;  5,1;set;Set]"
+		form = form.."button_exit[0.5,5.25;  6,1;set;Set]"
 	end
 	if not only_notset or not pts then
 		minetest.show_formspec(pname, "at_il_ipassign_"..minetest.pos_to_string(pos), form)
diff --git a/advtrains_interlocking/signal_aspect_ui.lua b/advtrains_interlocking/signal_aspect_ui.lua
index ccedb01..6de21e6 100644
--- a/advtrains_interlocking/signal_aspect_ui.lua
+++ b/advtrains_interlocking/signal_aspect_ui.lua
@@ -52,16 +52,8 @@ local function describe_supported_aspects_t1(suppasp, isasp)
 	t.main_current = selid
 
 	if suppasp.shunt == nil then
-		selid = 1
-		if isasp and isasp.shunt then
-			selid = 2
-		end
-		entries = {
-			describe_t1_shunt_aspect(false),
-			describe_t1_shunt_aspect(true),
-		}
-		t.shunt = entries
-		t.shunt_current = selid
+		t.shunt = true
+		t.shunt_current = isasp and isasp.shunt
 	end
 
 	entries = {}
@@ -83,8 +75,12 @@ local signal_tabheader_map = {}
 
 local function make_signal_formspec_tabheader(pname, pos, width, selid)
 	signal_tabheader_map[pname] = pos
+	local firstlabel = attrans("Signal aspect")
+	if advtrains.interlocking.db.get_sigd_for_signal(pos) then
+		firstlabel = attrans("Routesetting")
+	end
 	local options = {
-		attrans("Signal aspect"),
+		firstlabel,
 		attrans("Influence point"),
 		attrans("Distant signalling"),
 	}
@@ -112,7 +108,7 @@ advtrains.interlocking.make_signal_formspec_tabheader = make_signal_formspec_tab
 advtrains.interlocking.handle_signal_formspec_tabheader_fields = handle_signal_formspec_tabheader_fields
 
 local function make_signal_aspect_selector_t1(suppasp, purpose, isasp)
-	local form = {"size[7,7.25]"}
+	local form = {"size[7,6.5]"}
 	local t = describe_supported_aspects_t1(suppasp, isasp)
 	if type(purpose) == "table" then
 		form[#form+1] = make_signal_formspec_tabheader(purpose.pname, purpose.pos, 7, 1)
@@ -124,22 +120,21 @@ local function make_signal_aspect_selector_t1(suppasp, purpose, isasp)
 	form[#form+1] = F.S_label(0.5, 1.5, "Main aspect")
 	form[#form+1] = F.dropdown(0.5, 2, 6, "main", t.main, t.main_current, true)
 
-	form[#form+1] = F.S_label(0.5, 3, "Shunt aspect")
+	form[#form+1] = F.S_label(0.5, 3, "Distant aspect")
+	form[#form+1] = F.dropdown(0.5, 3.5, 6, "dst", t.dst, t.dst_current, true)
+
 	if t.shunt then
-		form[#form+1] = F.dropdown(0.5, 3.5, 6, "shunt_free", t.shunt, t.shunt_current, true)
+		form[#form+1] = F.S_checkbox(0.5, 4.25, "shunt", t.shunt_current, "Allow shunting")
 	else
-		form[#form+1] = F.S_label(0.5, 3.5, "The shunt aspect cannot be changed")
+		form[#form+1] = F.S_label(0.5, 4.5, "The shunt aspect cannot be changed.")
 	end
 
-	form[#form+1] = F.S_label(0.5, 4.5, "Distant aspect")
-	form[#form+1] = F.dropdown(0.5, 5, 6, "dst", t.dst, t.dst_current, true)
-
-	form[#form+1] = F.S_button_exit(0.5, 6, 6, 1, "save", "Save signal aspect")
+	form[#form+1] = F.S_button_exit(0.5, 5.25, 6, 1, "save", "Save signal aspect")
 	return table.concat(form)
 end
 
 local function make_signal_aspect_selector_t2(suppasp, purpose, isasp)
-	local form = {"size[7,4]"}
+	local form = {"size[7,6.5]"}
 	local def = advtrains.interlocking.aspects.get_type2_definition(suppasp.group)
 	if not def then
 		return nil
@@ -159,8 +154,13 @@ local function make_signal_aspect_selector_t2(suppasp, purpose, isasp)
 		end
 		entries[idx] = spv.label
 	end
-	form[#form+1] = F.dropdown(0.5, 1.5, 6, "asp", entries, selid, true)
-	form[#form+1] = F.S_button_exit(0.5, 2.5, 6, 1, "save", "Save signal aspect")
+	form[#form+1] = F.S_label(0.5, 1.5, "Signal group: @1", def.label)
+	form[#form+1] = F.dropdown(0.5, 2, 6, "asp", entries, selid, true)
+	form[#form+1] = F.S_label(0.5, 3, "Aspect in effect:")
+	form[#form+1] = F.label(0.5, 3.5, describe_t1_main_aspect(isasp.main))
+	form[#form+1] = F.label(0.5, 4, describe_t1_distant_aspect(isasp.dst))
+	form[#form+1] = F.label(0.5, 4.5, describe_t1_shunt_aspect(isasp.shunt))
+	form[#form+1] = F.S_button_exit(0.5, 5.25, 6, 1, "save", "Save signal aspect")
 	return table.concat(form)
 end
 
@@ -205,7 +205,7 @@ local function usebool(sup, val, free)
 	end
 end
 
-local function get_aspect_from_formspec_t1(suppasp, fields)
+local function get_aspect_from_formspec_t1(suppasp, fields, psl)
 	local maini = tonumber(fields.main)
 	if not maini then return end
 	local dsti = tonumber(fields.dst)
@@ -213,12 +213,12 @@ local function get_aspect_from_formspec_t1(suppasp, fields)
 	return {
 		main = suppasp.main[maini],
 		dst = suppasp.dst[dsti],
-		shunt = usebool(suppasp.shunt, fields.shunt_free, "2"),
+		shunt = usebool(suppasp.shunt, psl.shunt, "true"),
 		info = {},
 	}
 end
 
-local function get_aspect_from_formspec_t2(suppasp, fields)
+local function get_aspect_from_formspec_t2(suppasp, fields, psl)
 	local asp = advtrains.interlocking.aspects.type2_to_type1(suppasp, tonumber(fields.asp))
 	return asp
 end
@@ -232,12 +232,15 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 			if handle_signal_formspec_tabheader_fields(pname, fields) then
 				return true
 			end
+			if fields.shunt then
+				psl.shunt = fields.shunt
+			end
 			if fields.save then
 				local asp
 				if suppasp.type == 2 then
-					asp = get_aspect_from_formspec_t2(suppasp, fields)
+					asp = get_aspect_from_formspec_t2(suppasp, fields, psl)
 				else
-					asp = get_aspect_from_formspec_t1(suppasp, fields)
+					asp = get_aspect_from_formspec_t1(suppasp, fields, psl)
 				end
 				if asp then
 					psl.callback(pname, asp)
-- 
cgit v1.2.3


From 2d072cdc67ec3018eaba36b7c79c2b19e574a94d Mon Sep 17 00:00:00 2001
From: "Y. Wang" <yw05@forksworld.de>
Date: Fri, 6 Jan 2023 14:45:03 +0100
Subject: Rework formspecs; add description to JP signal group

---
 advtrains/formspec.lua                      |  47 +++---
 advtrains_interlocking/distant_ui.lua       |  76 ++++-----
 advtrains_interlocking/signal_api.lua       |  75 +++++----
 advtrains_interlocking/signal_aspect_ui.lua | 232 +++++++++++++++++-----------
 advtrains_interlocking/tcb_ts_ui.lua        |   5 -
 advtrains_signals_japan/init.lua            |   1 +
 6 files changed, 252 insertions(+), 184 deletions(-)

(limited to 'advtrains_interlocking/signal_aspect_ui.lua')

diff --git a/advtrains/formspec.lua b/advtrains/formspec.lua
index 743d3f3..8894354 100644
--- a/advtrains/formspec.lua
+++ b/advtrains/formspec.lua
@@ -9,32 +9,28 @@ local function make_list(entries)
 	return table.concat(t, ",")
 end
 
-local function f_button(x, y, w, h, id, text)
-	return sformat("button[%f,%f;%f,%f;%s;%s]", x, y, w, h, id, text)
+local function S_wrapper(f, i0)
+	return function(...)
+		local args = {...}
+		args[i0] = attrans(unpack(args,i0))
+		return f(unpack(args,1,i0))
+	end
 end
 
-local function S_button(x, y, w, h, id, ...)
-	return f_button(x, y, w, h, id, attrans(...))
+local function f_button(x, y, w, id, text)
+	return sformat("button[%f,%f;%f,0.75;%s;%s]", x, y, w, id, text)
 end
 
 local function f_checkbox(x, y, name, selected, label)
-	return sformat("checkbox[%f,%f;%s;%s;%s]", x, y, name, label, selected and "true" or "false")
-end
-
-local function S_checkbox(x, y, name, selected, ...)
-	return f_checkbox(x, y, name, selected, attrans(...))
+	return sformat("checkbox[%f,%f;%s;%s;%s]", x, y+0.25, name, label, selected and "true" or "false")
 end
 
-local function f_button_exit(x, y, w, h, id, text)
-	return sformat("button_exit[%f,%f;%f,%f;%s;%s]", x, y, w, h, id, text)
-end
-
-local function S_button_exit(x, y, w, h, id, ...)
-	return f_button_exit(x, y, w, h, id, attrans(...))
+local function f_button_exit(x, y, w, id, text)
+	return sformat("button_exit[%f,%f;%f,0.75;%s;%s]", x, y, w, id, text)
 end
 
 local function f_dropdown(x, y, w, id, entries, sel, indexed)
-	return sformat("dropdown[%f,%f;%f;%s;%s;%d%s]",
+	return sformat("dropdown[%f,%f;%f,0.75;%s;%s;%d%s]",
 		x, y, w, id, make_list(entries),
 		sel or 1,
 		indexed and ";true" or "")
@@ -56,11 +52,15 @@ local function f_image_button_exit(x, y, w, h, texture, id, label)
 end
 
 local function f_label(x, y, text)
-	return sformat("label[%f,%f;%s]", x, y, fsescape(text))
+	return sformat("label[%f,%f;%s]", x, y+0.25, fsescape(text))
+end
+
+local function f_field_aux(x, y, w, id, default)
+	return sformat("field[%f,%f;%f,0.75;%s;;%s]", x, y, w, id, default)
 end
 
-local function S_label(x, y, ...)
-	return f_label(x, y, attrans(...))
+local function f_field(x, y, w, id, label, default)
+	return f_label(x, y-0.5, label) .. f_field_aux(x, y, w, id, default)
 end
 
 local function f_tabheader(x, y, w, h, id, entries, sel, transparent, border)
@@ -95,16 +95,17 @@ end
 
 return {
 	button = f_button,
-	S_button = S_button,
+	S_button = S_wrapper(f_button, 5),
 	checkbox = f_checkbox,
-	S_checkbox = S_checkbox,
+	S_checkbox = S_wrapper(f_checkbox, 5),
 	button_exit = f_button_exit,
-	S_button_exit = S_button_exit,
+	S_button_exit = S_wrapper(f_button_exit, 5),
 	dropdown = f_dropdown,
+	field = f_field,
 	image_button = f_image_button,
 	image_button_exit = f_image_button_exit,
 	label = f_label,
-	S_label = S_label,
+	S_label = S_wrapper(f_label, 3),
 	tabheader = f_tabheader,
 	textlist = f_textlist,
 }
diff --git a/advtrains_interlocking/distant_ui.lua b/advtrains_interlocking/distant_ui.lua
index a7ff406..0907684 100644
--- a/advtrains_interlocking/distant_ui.lua
+++ b/advtrains_interlocking/distant_ui.lua
@@ -2,39 +2,52 @@ local F = advtrains.formspec
 local D = advtrains.distant
 local I = advtrains.interlocking
 
-function advtrains.interlocking.show_distant_signal_form(pos, pname)
-	local form = {"size[7,6.5]"}
-	form[#form+1] = advtrains.interlocking.make_signal_formspec_tabheader(pname, pos, 7, 3)
+function I.make_short_dst_formspec_component(pos, x, y, w)
 	local main, set_by = D.get_main(pos)
 	if main then
 		local pts_main = minetest.pos_to_string(main)
-		form[#form+1] = F.S_label(0.5, 0.5, "This signal is a distant signal of @1.", pts_main)
+		local desc = attrans("The assignment is made with an unknown method.")
 		if set_by == "manual" then
-			form[#form+1] = F.S_label(0.5, 1, "The assignment is made manually.")
+			desc = attrans("The assignment is made manually.")
 		elseif set_by == "routesetting" then
-			form[#form+1] = F.S_label(0.5, 1, "The assignment is made by the routesetting system.")
+			desc = attrans("The assignment is made by the routesetting system.")
 		end
+		return table.concat {
+			F.S_label(x, y, "This signal is a distant signal of @1.", pts_main),
+			F.label(x, y+0.5, desc),
+			F.S_button_exit(x, y+1, w/2-0.125, "dst_assign", "Reassign"),
+			F.S_button_exit(x+w/2+0.125, y+1, w/2-0.125, "dst_unassign", "Unassign"),
+		}
 	else
-		form[#form+1] = F.S_label(0.5, 0.5, "This signal is not assigned to a main signal.")
-		form[#form+1] = F.S_label(0.5, 1, "The distant aspect of the signal is not used.")
-	end
-	if set_by ~= nil then
-		form[#form+1] = F.S_button_exit(0.5, 1.5, 3, 1, "unassign_dst", "Unassign")
-		form[#form+1] = F.S_button_exit(3.5, 1.5, 3, 1, "assign_dst", "Reassign")
-	else
-		form[#form+1] = F.S_button_exit(0.5, 1.5, 6, 1, "assign_dst", "Assign")
+		return table.concat {
+			F.S_label(x, y, "This signal is not assigned to a main signal."),
+			F.S_label(x, y+0.5, "The distant aspect of the signal is not used."),
+			F.S_button_exit(x, y+1, w, "dst_assign", "Assign")
+		}
 	end
+end
 
-	local dsts = D.get_dst(pos)
+function I.make_dst_list_formspec_component(pos, x, y, w, h)
+	local ymid = y+0.25+h/2
 	local dstlist = {}
-	for pos, _ in pairs(dsts) do
-		dstlist[#dstlist+1] = minetest.pos_to_string(advtrains.decode_pos(pos))
+	for pos, _ in pairs(D.get_dst(pos)) do
+		table.insert(dstlist, minetest.pos_to_string(advtrains.decode_pos(pos)))
 	end
-	form[#form+1] = F.S_label(0.5, 2.5, "This signal has the following distant signals:")
-	form[#form+1] = F.textlist(0.5, 3, 4.5, 3, "dstlist", dstlist)
-	form[#form+1] = F.image_button_exit(5.5, 3.25, 1, 1, "cdb_add.png", "dst_add", "")
-	form[#form+1] = F.image_button_exit(5.5, 4.75, 1, 1, "cdb_clear.png", "dst_del", "")
-	minetest.show_formspec(pname, "advtrains:distant_" .. minetest.pos_to_string(pos), table.concat(form))
+	return table.concat {
+		F.S_label(x, y, "Distant signals:"),
+		F.textlist(x, y+0.5, w-1, h-0.5, "dstlist", dstlist),
+		F.image_button_exit(x+w-0.75, ymid-0.875, 0.75, 0.75, "cdb_add.png", "dst_add", ""),
+		F.image_button_exit(x+w-0.75, ymid+0.125, 0.75, 0.75, "cdb_clear.png", "dst_del", ""),
+	}
+end
+
+function I.make_dst_formspec_component(pos, x, y, w, h)
+	return I.make_short_dst_formspec_component(pos, x, y, w, h)
+		.. I.make_dst_list_formspec_component(pos, x, y+2, w, h-2)
+end
+
+function I.show_distant_signal_form(pos, pname)
+	return I.show_ip_form(pos, pname)
 end
 
 local signal_pos = {}
@@ -87,21 +100,14 @@ minetest.register_on_punchnode(function(pos, node, player, pointed_thing)
 end)
 
 local dstsel = {}
-minetest.register_on_player_receive_fields(function(player, formname, fields)
-	local pname = player:get_player_name()
-	local pos = minetest.string_to_pos(string.match(formname, "^advtrains:distant_(.+)$") or "")
-	if not pos then
-		return
-	end
-	if not minetest.check_player_privs(pname, "interlocking") then
+
+function advtrains.interlocking.handle_dst_formspec_fields(pname, pos, fields)
+	if not (pos and minetest.check_player_privs(pname, "interlocking")) then
 		return
 	end
-	if advtrains.interlocking.handle_signal_formspec_tabheader_fields(pname, fields) then
-		return true
-	end
-	if fields.unassign_dst then
+	if fields.dst_unassign then
 		D.unassign_dst(pos)
-	elseif fields.assign_dst then
+	elseif fields.dst_assign then
 		init_signal_assignment(pname, pos)
 	elseif fields.dst_add then
 		init_distant_assignment(pname, pos)
@@ -124,4 +130,4 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 			end
 		end
 	end
-end)
+end
diff --git a/advtrains_interlocking/signal_api.lua b/advtrains_interlocking/signal_api.lua
index 8bb92bf..cd408d7 100644
--- a/advtrains_interlocking/signal_api.lua
+++ b/advtrains_interlocking/signal_api.lua
@@ -1,5 +1,7 @@
 -- Signal API implementation
 
+local F = advtrains.formspec
+
 local DANGER = {
 	main = 0,
 	shunt = false,
@@ -131,57 +133,68 @@ local function ipmarker(ipos, connid)
 	})
 end
 
--- shows small info form for signal IP state/assignment
+function advtrains.interlocking.make_ip_formspec_component(pos, x, y, w)
+	advtrains.interlocking.db.check_for_duplicate_ip(pos)
+	local pts, connid = advtrains.interlocking.db.get_ip_by_signalpos(pos)
+	if pts then
+		return table.concat {
+			F.S_label(x, y, "Influence point is set at @1.", string.format("%s/%s", pts, connid)),
+			F.S_button_exit(x, y+0.5, w/2-0.125, "ip_set", "Modify"),
+			F.S_button_exit(x+w/2+0.125, y+0.5, w/2-0.125, "ip_clear", "Clear"),
+		}, pts, connid
+	else
+		return table.concat {
+			F.S_label(x, y, "Influence point is not set."),
+			F.S_button_exit(x, y+0.5, w, "ip_set", "Set influence point"),
+		}
+	end
+end
+
+-- shows small info form for signal properties
+-- This function is named show_ip_form because it was originally only intended
+-- for assigning/changing the influence point.
 -- only_notset: show only if it is not set yet (used by signal tcb assignment)
 function advtrains.interlocking.show_ip_form(pos, pname, only_notset)
 	if not minetest.check_player_privs(pname, "interlocking") then
 		return
 	end
-	local form = "size[7,6.5]label[0.5,0.5;Signal at "..minetest.pos_to_string(pos).."]"
-	local node = advtrains.ndb.get_node(pos)
-	local ndef = minetest.registered_nodes[node.name] or {}
-	if ndef.advtrains and ndef.advtrains.set_aspect then
-		form = form .. advtrains.interlocking.make_signal_formspec_tabheader(pname, pos, 7, 2)
-	end
-	advtrains.interlocking.db.check_for_duplicate_ip(pos)
-	local pts, connid = advtrains.interlocking.db.get_ip_by_signalpos(pos)
+	local ipform, pts, connid = advtrains.interlocking.make_ip_formspec_component(pos, 0.5, 0.5, 7)
+	local form = table.concat {
+		"formspec_version[4]",
+		"size[8,6.75]",
+		ipform,
+		advtrains.interlocking.make_dst_formspec_component(pos, 0.5, 2, 7, 4.25),
+	}
 	if pts then
-		form = form.."label[0.5,1.5;Influence point is set at "..pts.."/"..connid.."]"
-		form = form.."button_exit[0.5,4.25;  6,1;set;Move]"
-		form = form.."button_exit[0.5,5.25;  6,1;clear;Clear]"
 		local ipos = minetest.string_to_pos(pts)
 		ipmarker(ipos, connid)
-	else
-		form = form.."label[0.5,1.5;Influence point is not set.]"
-		form = form.."label[0.5,2.0;It is recommended to set an influence point.]"
-		form = form.."label[0.5,2.5;This is the point where trains will obey the signal.]"
-		
-		form = form.."button_exit[0.5,5.25;  6,1;set;Set]"
 	end
 	if not only_notset or not pts then
-		minetest.show_formspec(pname, "at_il_ipassign_"..minetest.pos_to_string(pos), form)
+		minetest.show_formspec(pname, "at_il_propassign_"..minetest.pos_to_string(pos), form)
 	end
 end
 
-minetest.register_on_player_receive_fields(function(player, formname, fields)
-	local pname = player:get_player_name()
-	if advtrains.interlocking.handle_signal_formspec_tabheader_fields(pname, fields) then
-		return true
-	end
-	if not minetest.check_player_privs(pname, {train_operator=true, interlocking=true}) then
+function advtrains.interlocking.handle_ip_formspec_fields(pname, pos, fields)
+	if not (pos and minetest.check_player_privs(pname, {train_operator=true, interlocking=true})) then
 		return
 	end
-	local pts = string.match(formname, "^at_il_ipassign_([^_]+)$")
+	if fields.ip_set then
+		advtrains.interlocking.signal_init_ip_assign(pos, pname)
+	elseif fields.ip_clear then
+		advtrains.interlocking.db.clear_ip_by_signalpos(pos)
+	end
+end
+
+minetest.register_on_player_receive_fields(function(player, formname, fields)
+	local pname = player:get_player_name()
+	local pts = string.match(formname, "^at_il_propassign_([^_]+)$")
 	local pos
 	if pts then
 		pos = minetest.string_to_pos(pts)
 	end
 	if pos then
-		if fields.set then
-			advtrains.interlocking.signal_init_ip_assign(pos, pname)
-		elseif fields.clear then
-			advtrains.interlocking.db.clear_ip_by_signalpos(pos)
-		end
+		advtrains.interlocking.handle_ip_formspec_fields(pname, pos, fields)
+		advtrains.interlocking.handle_dst_formspec_fields(pname, pos, fields)
 	end
 end)
 
diff --git a/advtrains_interlocking/signal_aspect_ui.lua b/advtrains_interlocking/signal_aspect_ui.lua
index 6de21e6..ddab793 100644
--- a/advtrains_interlocking/signal_aspect_ui.lua
+++ b/advtrains_interlocking/signal_aspect_ui.lua
@@ -37,6 +37,20 @@ advtrains.interlocking.describe_t1_main_aspect = describe_t1_main_aspect
 advtrains.interlocking.describe_t1_shunt_aspect = describe_t1_shunt_aspect
 advtrains.interlocking.describe_t1_distant_aspect = describe_t1_distant_aspect
 
+local function dsel(p, q, x, y)
+	if p == nil then
+		if q then
+			return x
+		else
+			return y
+		end
+	elseif p then
+		return x
+	else
+		return y
+	end
+end
+
 local function describe_supported_aspects_t1(suppasp, isasp)
 	local t = {}
 
@@ -50,11 +64,22 @@ local function describe_supported_aspects_t1(suppasp, isasp)
 	end
 	t.main = entries
 	t.main_current = selid
+	t.main_string = tostring(isasp.main)
+	if t.main == nil then
+		t.main_string = ""
+	end
 
-	if suppasp.shunt == nil then
-		t.shunt = true
-		t.shunt_current = isasp and isasp.shunt
+	t.shunt = {
+		attrans("No shunting"),
+		attrans("Shunting allowed"),
+		attrans("Proceed as main"),
+	}
+
+	t.shunt_current = dsel(suppasp.shunt, isasp.shunt, 2, 1)
+	if dsel(suppasp.proceed_as_main, isasp.proceed_as_main, t.shunt_current == 1) then
+		t.shunt_current = 3
 	end
+	t.shunt_const = suppasp.shunt ~= nil
 
 	entries = {}
 	selid = 1
@@ -71,96 +96,98 @@ end
 
 advtrains.interlocking.describe_supported_aspects_t1 = describe_supported_aspects_t1
 
-local signal_tabheader_map = {}
-
-local function make_signal_formspec_tabheader(pname, pos, width, selid)
-	signal_tabheader_map[pname] = pos
-	local firstlabel = attrans("Signal aspect")
-	if advtrains.interlocking.db.get_sigd_for_signal(pos) then
-		firstlabel = attrans("Routesetting")
-	end
-	local options = {
-		firstlabel,
-		attrans("Influence point"),
-		attrans("Distant signalling"),
-	}
-	return F.tabheader(0, 0, nil, nil, "signal_tab", options, selid)
-end
-
-local function handle_signal_formspec_tabheader_fields(pname, fields)
-	local n = tonumber(fields.signal_tab)
-	local pos = signal_tabheader_map[pname]
-	if not (n and pos) then
-		return false
-	end
-	if n == 1 then
-		local node = advtrains.ndb.get_node(pos)
-		advtrains.interlocking.show_signal_form(pos, node, pname)
-	elseif n == 2 then
-		advtrains.interlocking.show_ip_form(pos, pname)
-	elseif n == 3 then
-		advtrains.interlocking.show_distant_signal_form(pos, pname)
-	end
-	return true
-end
-
-advtrains.interlocking.make_signal_formspec_tabheader = make_signal_formspec_tabheader
-advtrains.interlocking.handle_signal_formspec_tabheader_fields = handle_signal_formspec_tabheader_fields
-
 local function make_signal_aspect_selector_t1(suppasp, purpose, isasp)
-	local form = {"size[7,6.5]"}
 	local t = describe_supported_aspects_t1(suppasp, isasp)
+	local formmode = 1
+
+	local pos
 	if type(purpose) == "table" then
-		form[#form+1] = make_signal_formspec_tabheader(purpose.pname, purpose.pos, 7, 1)
-		purpose = ""
+		formmode = 2
+		pos = purpose.pos
 	end
-	form[#form+1] = F.S_label(0.5, 0.5, "Select signal aspect")
-	form[#form+1] = F.label(0.5, 1, purpose)
 
-	form[#form+1] = F.S_label(0.5, 1.5, "Main aspect")
-	form[#form+1] = F.dropdown(0.5, 2, 6, "main", t.main, t.main_current, true)
+	local form = {
+		"formspec_version[4]",
+		string.format("size[8,%f]", ({5.75, 9.25})[formmode]),
+		F.S_label(0.5, 0.5, "Select signal aspect"),
+	}
+	if formmode == 1 then
+		form[#form+1] = F.label(0.5, 1, purpose)
+	else
+		form[#form+1] = F.S_label(0.5, 1, "Signal at @1", minetest.pos_to_string(pos))
+	end
 
-	form[#form+1] = F.S_label(0.5, 3, "Distant aspect")
-	form[#form+1] = F.dropdown(0.5, 3.5, 6, "dst", t.dst, t.dst_current, true)
+	form[#form+1] = F.S_label(0.5, 1.5, "Main aspect")
+	if formmode == 1 then
+		form[#form+1] = F.field(0.5, 2, 7, "asp_mainval", "", t.main_string)
+	else
+		form[#form+1] = F.dropdown(0.5, 2, 7, "asp_mainsel", t.main, t.main_current, true)
+	end
 
-	if t.shunt then
-		form[#form+1] = F.S_checkbox(0.5, 4.25, "shunt", t.shunt_current, "Allow shunting")
+	form[#form+1] = F.S_label(0.5, 3, "Shunt aspect")
+	if formmode == 2 and t.shunt_const then
+		form[#form+1] = F.label(0.5, 3.5, t.shunt[t.shunt_current])
+		form[#form+1] = F.S_label(0.5, 4, "The shunt aspect cannot be changed.")
 	else
-		form[#form+1] = F.S_label(0.5, 4.5, "The shunt aspect cannot be changed.")
+		form[#form+1] = F.dropdown(0.5, 3.5, 7, "asp_shunt", t.shunt, t.shunt_current, true)
+	end
+
+	form[#form+1] = F.S_button_exit(0.5, 4.5, 7, "asp_save", "Save signal aspect")
+
+	if formmode == 2 then
+		form[#form+1] = advtrains.interlocking.make_ip_formspec_component(pos, 0.5, 5.5, 7)
+		form[#form+1] = advtrains.interlocking.make_short_dst_formspec_component(pos, 0.5, 7, 7)
 	end
 
-	form[#form+1] = F.S_button_exit(0.5, 5.25, 6, 1, "save", "Save signal aspect")
 	return table.concat(form)
 end
 
 local function make_signal_aspect_selector_t2(suppasp, purpose, isasp)
-	local form = {"size[7,6.5]"}
 	local def = advtrains.interlocking.aspects.get_type2_definition(suppasp.group)
 	if not def then
 		return nil
 	end
+	local formmode = 1
+
+	local pos
 	if type(purpose) == "table" then
-		form[#form+1] = make_signal_formspec_tabheader(purpose.pname, purpose.pos, 7, 1)
-		purpose = ""
+		formmode = 2
+		pos = purpose.pos
+	end
+	local form = {
+		"formspec_version[4]",
+		string.format("size[8,%f]", ({4.25, 10.25})[formmode]),
+		F.S_label(0.5, 0.5, "Select signal aspect")
+	}
+	if formmode == 1 then
+		form[#form+1] = F.label(0.5, 1, purpose)
+	else
+		form[#form+1] = F.S_label(0.5, 1, "Signal at @1", minetest.pos_to_string(pos))
 	end
-	form[#form+1] = F.S_label(0.5, 0.5, "Select signal aspect")
-	form[#form+1] = F.label(0.5, 1, purpose)
 
 	local entries = {}
-	local selid = 1
-	for idx, spv in ipairs(def.main) do
-		if isasp and isasp.type2name == spv.name then
-			selid = idx
+	local selid = #def.main
+	if isasp then
+		if isasp.type2name ~= def.main[selid].name then
+			selid = 1
 		end
-		entries[idx] = spv.label
 	end
+	if selid > 1 then
+		selid = 2
+	end
+	local entries = {
+		def.main[1].label,
+		def.main[#def.main].label,
+	}
 	form[#form+1] = F.S_label(0.5, 1.5, "Signal group: @1", def.label)
-	form[#form+1] = F.dropdown(0.5, 2, 6, "asp", entries, selid, true)
-	form[#form+1] = F.S_label(0.5, 3, "Aspect in effect:")
-	form[#form+1] = F.label(0.5, 3.5, describe_t1_main_aspect(isasp.main))
-	form[#form+1] = F.label(0.5, 4, describe_t1_distant_aspect(isasp.dst))
-	form[#form+1] = F.label(0.5, 4.5, describe_t1_shunt_aspect(isasp.shunt))
-	form[#form+1] = F.S_button_exit(0.5, 5.25, 6, 1, "save", "Save signal aspect")
+	form[#form+1] = F.dropdown(0.5, 2, 7, "asp_sel", entries, selid, true)
+	form[#form+1] = F.S_button_exit(0.5, 3, 7, "asp_save", "Save signal aspect")
+
+	if formmode == 2 then
+		form[#form+1] = advtrains.interlocking.make_ip_formspec_component(pos, 0.5, 4, 7)
+		form[#form+1] = advtrains.interlocking.make_dst_formspec_component(pos, 0.5, 5.5, 7, 4.25)
+	end
+
 	return table.concat(form)
 end
 
@@ -188,13 +215,14 @@ function advtrains.interlocking.show_signal_aspect_selector(pname, p_suppasp, p_
 
 	local token = advtrains.random_id()
 	minetest.show_formspec(pname, "at_il_sigaspdia_"..token, form)
-	--minetest.after(1, function()
-	players_aspsel[pname] = {
-		suppasp = suppasp,
-		callback = callback,
-		token = token,
-	}
-	--end)
+	minetest.after(0, function()
+		players_aspsel[pname] = {
+			purpose = purpose,
+			suppasp = suppasp,
+			callback = callback,
+			token = token,
+		}
+	end)
 end
 
 local function usebool(sup, val, free)
@@ -206,20 +234,45 @@ local function usebool(sup, val, free)
 end
 
 local function get_aspect_from_formspec_t1(suppasp, fields, psl)
-	local maini = tonumber(fields.main)
-	if not maini then return end
-	local dsti = tonumber(fields.dst)
-	if not dsti then return end
+	local maini = tonumber(fields.asp_mainsel)
+	local main = suppasp.main[maini]
+	if not maini then
+		local mainval = fields.asp_mainval
+		if mainval == "-1" then
+			main = -1
+		elseif string.match(mainval, "^%d+$") then
+			main = tonumber(mainval)
+		else
+			main = nil
+		end
+	end
+	local shunti = tonumber(fields.asp_shunt)
+	local shunt = suppasp.shunt
+	if shunt == nil then
+		shunt = shunti == 2
+	end
+	local proceed_as_main = suppasp.proceed_as_main
+	if proceed_as_main == nil then
+		proceed_as_main = shunti == 3
+	end
 	return {
-		main = suppasp.main[maini],
-		dst = suppasp.dst[dsti],
-		shunt = usebool(suppasp.shunt, psl.shunt, "true"),
+		main = main,
+		shunt = shunt,
+		proceed_as_main = proceed_as_main,
 		info = {},
 	}
 end
 
 local function get_aspect_from_formspec_t2(suppasp, fields, psl)
-	local asp = advtrains.interlocking.aspects.type2_to_type1(suppasp, tonumber(fields.asp))
+	local sel = tonumber(fields.asp_sel)
+	local def = advtrains.interlocking.aspects.get_type2_definition(suppasp.group)
+	if not (sel and def) then
+		return
+	end
+	if sel ~= 1 then
+		sel = #def.main
+	end
+	local asp = advtrains.interlocking.aspects.type2_to_type1(suppasp, sel)
 	return asp
 end
 
@@ -229,13 +282,7 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 	if psl then
 		if formname == "at_il_sigaspdia_"..psl.token then
 			local suppasp = psl.suppasp
-			if handle_signal_formspec_tabheader_fields(pname, fields) then
-				return true
-			end
-			if fields.shunt then
-				psl.shunt = fields.shunt
-			end
-			if fields.save then
+			if fields.asp_save then
 				local asp
 				if suppasp.type == 2 then
 					asp = get_aspect_from_formspec_t2(suppasp, fields, psl)
@@ -246,6 +293,11 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 					psl.callback(pname, asp)
 				end
 			end
+			if type(psl.purpose) == "table" then
+				local pos = psl.purpose.pos
+				advtrains.interlocking.handle_ip_formspec_fields(pname, pos, fields)
+				advtrains.interlocking.handle_dst_formspec_fields(pname, pos, fields)
+			end
 		else
 			players_aspsel[pname] = nil
 		end
diff --git a/advtrains_interlocking/tcb_ts_ui.lua b/advtrains_interlocking/tcb_ts_ui.lua
index 3898d73..9aea18c 100755
--- a/advtrains_interlocking/tcb_ts_ui.lua
+++ b/advtrains_interlocking/tcb_ts_ui.lua
@@ -614,7 +614,6 @@ function advtrains.interlocking.show_signalling_form(sigd, pname, sel_rte, calle
 	if not tcbs.routes then tcbs.routes = {} end
 	
 	local form = "size[7,10.25]label[0.5,0.5;Signal at "..minetest.pos_to_string(sigd.p).."]"
-	form = form .. advtrains.interlocking.make_signal_formspec_tabheader(pname, tcbs.signal, 7, 1)
 	form = form.."field[0.8,1.5;5.2,1;name;Signal name;"..minetest.formspec_escape(tcbs.signal_name).."]"
 	form = form.."button[5.5,1.2;1,1;setname;Set]"
 	
@@ -708,10 +707,6 @@ end
 
 minetest.register_on_player_receive_fields(function(player, formname, fields)
 	local pname = player:get_player_name()
-	if string.find(formname, "^at_il_signalling_")
-		and advtrains.interlocking.handle_signal_formspec_tabheader_fields(pname, fields) then
-		return true
-	end
 	if not minetest.check_player_privs(pname, "train_operator") then
 		return
 	end
diff --git a/advtrains_signals_japan/init.lua b/advtrains_signals_japan/init.lua
index a28478f..fe74259 100644
--- a/advtrains_signals_japan/init.lua
+++ b/advtrains_signals_japan/init.lua
@@ -294,6 +294,7 @@ local function process_signal(name, sigdata, isrpt)
 	local type2def = {}
 	type2def.name = typename
 	type2def.main = {}
+	type2def.label = S(string.format("Japanese signal (type %s)", string.upper(name)))
 	local def = {}
 	local tx = {}
 	def.typename = typename
-- 
cgit v1.2.3


From e61fe3176a2ef9c41a3fe16a3ffd58bd03fd96a6 Mon Sep 17 00:00:00 2001
From: "Y. Wang" <yw05@forksworld.de>
Date: Sat, 7 Jan 2023 14:17:17 +0100
Subject: Show IP form for repeater signals

---
 advtrains_interlocking/signal_aspect_ui.lua | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

(limited to 'advtrains_interlocking/signal_aspect_ui.lua')

diff --git a/advtrains_interlocking/signal_aspect_ui.lua b/advtrains_interlocking/signal_aspect_ui.lua
index ddab793..186d2fe 100644
--- a/advtrains_interlocking/signal_aspect_ui.lua
+++ b/advtrains_interlocking/signal_aspect_ui.lua
@@ -199,12 +199,20 @@ function advtrains.interlocking.show_signal_aspect_selector(pname, p_suppasp, p_
 		info = {},
 	}
 	local purpose = p_purpose or ""
+	local pos
 	if type(p_purpose) == "table" then
-		purpose = {pname = pname, pos = p_purpose}
+		pos = p_purpose
+		purpose = {pname = pname, pos = pos}
 	end
 
 	local form
 	if suppasp.type == 2 then
+		if suppasp.dst_shift then
+			if pos then
+				advtrains.interlocking.show_ip_form(pos, pname)
+			end
+			return
+		end
 		form = make_signal_aspect_selector_t2(suppasp, purpose, isasp)
 	else
 		form = make_signal_aspect_selector_t1(suppasp, purpose, isasp)
-- 
cgit v1.2.3


From e25b1c744dad7daa561ee0b23b006bc616f88f23 Mon Sep 17 00:00:00 2001
From: "Y. Wang" <yw05@forksworld.de>
Date: Sun, 26 Mar 2023 11:53:00 +0200
Subject: Cancel type 2 signals; introduce signal groups for all signals

---
 advtrains_interlocking/README.md                   |  41 ++-
 advtrains_interlocking/aspect.lua                  | 290 +++++++++++++++++++++
 advtrains_interlocking/distant.lua                 |   1 -
 advtrains_interlocking/init.lua                    |   2 +-
 advtrains_interlocking/signal_api.lua              |  28 +-
 advtrains_interlocking/signal_aspect_accessors.lua |  80 ++----
 advtrains_interlocking/signal_aspect_ui.lua        | 127 ++-------
 advtrains_interlocking/signal_aspects.lua          | 202 --------------
 .../spec/basic_signalling_spec.lua                 |  26 +-
 advtrains_interlocking/spec/signal_group_spec.lua  |  95 +++++++
 advtrains_interlocking/spec/type2_spec.lua         | 117 ---------
 advtrains_signals_japan/init.lua                   |  18 +-
 12 files changed, 474 insertions(+), 553 deletions(-)
 create mode 100644 advtrains_interlocking/aspect.lua
 delete mode 100644 advtrains_interlocking/signal_aspects.lua
 create mode 100644 advtrains_interlocking/spec/signal_group_spec.lua
 delete mode 100644 advtrains_interlocking/spec/type2_spec.lua

(limited to 'advtrains_interlocking/signal_aspect_ui.lua')

diff --git a/advtrains_interlocking/README.md b/advtrains_interlocking/README.md
index 636ad67..d4a2699 100644
--- a/advtrains_interlocking/README.md
+++ b/advtrains_interlocking/README.md
@@ -2,12 +2,6 @@
 
 The `advtrains_interlocking` mod provides various interlocking and signaling features for Advtrains.
 
-## Signal types
-There are two types of signals in Advtrains:
-
-* Type 1 (speed signals): These signals only give speed information.
-* Type 2 (route signals): These signals mainly provide route information, but sometimes also provide speed information.
-
 ## Signal aspect tables
 
 Signal aspects are represented using tables with the following (optional) fields:
@@ -16,15 +10,16 @@ Signal aspects are represented using tables with the following (optional) fields
 * `dst`: The distant signal aspect. It provides information on the permitted speed after passing the next signal.
 * `shunt`: Whether the train may proceed in shunt mode and, if the main aspect is danger, proceed in shunt mode.
 * `proceed_as_main`: Whether the train should exit shunt mode when proceeding.
-* `type2group`: The type 2 group of the signal.
-* `type2name`: The type 2 signal aspect name.
+* `group`: The name of the signal group.
+* `name`: The name of the signal aspect.
 
 The `main` and `dst` fields may be:
 
 * An positive number indicating the permitted speed,
 * The number 0, indicating that the train should expect to stop at the current signal (or, for the `dst` field, the next signal),
-* The number -1, indicating that the train can proceed (or, for the `dst` field, expect to proceed) at maximum speed, or
-* The constant `false` or `nil`, indicating no change to the speed restriction.
+* The number -1, indicating that the train can proceed (or, for the `dst` field, expect to proceed) at maximum speed,
+* The constant `false`, indicating no change to the speed restriction, or
+* The constant `nil`, indicating that the default value for the name aspect (if present) is used. If no valid signal aspect is named, or the signal aspect does not provide a default value, the value is assumed to be `false`.
 
 ### Node definitions
 
@@ -38,22 +33,19 @@ The node definition should contain an `advtrains` field.
 
 The `advtrains` field of the node definition should contain a `supported_aspects` table for signals with variable aspects.
 
-For type 1 signals, the `supported_aspects` table should contain the following fields:
+The `supported_aspects` table should contain the following fields:
 
 * `main`: A list of values supported for the main aspect.
 * `dst`: A list of values supported for the distant aspect.
 * `shunt`: The value for the `shunt` field of the signal aspect or `nil` if the value is variable.
 * `proceed_as_main`: The value for the `proceed_as_main` field of the signal aspect.
-
-For type 2 signals, the `supported_aspects` table should contain the following fields:
-
-* `type`: The numeric constant `2`.
-* `group`: The type 2 signal group.
+* `group`: The name of the signal group.
+* `name`: A list of supported (named) aspects.
 * `dst_shift`: The phase shift for distant/repeater signals. This field should not be set for main signals.
 
 The `advtrains` field of the node definition should contain a `get_aspect` function. This function is given the position of the signal and the node at the position. It should return the signal aspect table or, in the case of type 2 signals, the name of the signal aspect.
 
-For signals with variable aspects, a corresponding `set_aspect` function should also be defined. This function is given the position of the signal, the node at the position, and the new aspect (or, in the case of type 2 signals, the name of the new signal aspect). For type 1 signals, the new aspect is not guranteed to be supported by the signal itself.
+For signals with variable aspects, a corresponding `set_aspect` function should also be defined. This function is given the position of the signal, the node at the position, and the new aspect. The new aspect is not guaranteed to be supported by the signal itself.
 
 Signals should also have the following callbacks set:
 
@@ -63,23 +55,20 @@ Signals should also have the following callbacks set:
 
 Alternatively, custom callbacks should call the respective functions.
 
-## Type 2 signal groups
+## Signal groups
 
-Type 2 signals belong to signal gruops, which are registered using `advtrains.interlocking.aspects.register_type2`.
+Signals may belong to signal groups are registered using `advtrains.interlocking.aspect.register_group`.
 
 Signal group definitions include the following fields:
 
 * `name`: The internal name of the signal group. It is recommended to use the mod name as a prefix to avoid name collisions.
 * `label`: The description of the signal group.
-* `main`: A list of signal aspects, from the least restrictive (i.e. proceed) to the most restrictive (i.e. danger).
+* `aspects`: A table of signal aspects. Entries with string indices define the signal aspect with the name. Entries with numeric indices (starting from 1, counting upward) contain a list of corresponding aspect names (the first entry is preferred) and are mainly used for routing, where larger indices indicate that the signal with the aspect is closer to the signal with the "danger" (or similar) aspect.
 
 Each aspect in the signal group definition table should contain the following fields:
 
-* `name`: The internal name of the signal aspect.
 * `label`: The description of the signal aspect.
-* `main`, `shunt`, `proceed_as_main`: The fields corresponding to the ones in signal aspect tables.
-
-Type 2 signal aspects are then referred to with the aspect names within the group.
+* `main`, `shunt`, `proceed_as_main`: The default values for the aspect. Note that the `dst` field has no default value as it is automatically adjusted.
 
 ## Notes
 
@@ -89,8 +78,8 @@ It is allowed to provide other methods of setting the signal aspect. However:
 * Please call `advtrains.interlocking.signal_readjust_aspect` after the signal aspect has changed.
 
 ## Examples
-An example of type 1 signals can be found in `advtrains_signals_ks`, which provides a subset of German signals.
+An example of speed signals can be found in `advtrains_signals_ks`, which provides a subset of German signals.
 
-An example of type 2 signals can be found in `advtrains_signals_japan`, which provides a subset of Japanese signals.
+An example of route signals can be found in `advtrains_signals_japan`, which provides a subset of Japanese signals.
 
 The mods mentioned above are also used for demonstation purposes and can also be used for testing.
diff --git a/advtrains_interlocking/aspect.lua b/advtrains_interlocking/aspect.lua
new file mode 100644
index 0000000..1575fb1
--- /dev/null
+++ b/advtrains_interlocking/aspect.lua
@@ -0,0 +1,290 @@
+--- Signal aspect handling.
+-- @module advtrains.interlocking.aspect
+
+local registered_groups = {}
+
+local named_aspect_aspfields = {main = true, shunt = true, proceed_as_main = true}
+
+local signal_aspect = {}
+
+local signal_aspect_metatable = {
+	__eq = function(asp1, asp2)
+		for _, k in pairs {"main", "dst", "shunt", "proceed_as_main"} do
+			local v1, v2 = (asp1[k] or false), (asp2[k] or false)
+			if v1 ~= v2 then
+				return false
+			end
+		end
+		if asp1.group and asp1.group == asp2.group then
+			return asp1.name == asp2.name
+		end
+		return true
+	end,
+	__index = function(asp, field)
+		local method = signal_aspect[field]
+		if method then
+			return method
+		end
+		if not named_aspect_aspfields[field] then
+			return nil
+		end
+		local group = registered_groups[rawget(asp, "group")]
+		if not group then
+			return false
+		end
+		local aspdef = group.aspects[rawget(asp, "name")]
+		if not aspdef then
+			return false
+		end
+		return aspdef[field] or false
+	end,
+	__tostring = function(asp)
+		local st = {}
+		if asp.group and asp.name then
+			table.insert(st, ("%q in %q"):format(asp.name, asp.group))
+		end
+		if asp.main then
+			table.insert(st, ("current %d"):format(asp.main))
+		end
+		if asp.main ~= 0 then
+			if asp.dst then
+				table.insert(st, string.format("next %d", asp.dst))
+			end
+		end
+		if asp.main ~= 0 and asp.proceed_as_main then
+			table.insert(st, "proceed as main")
+		end
+		return ("[%s]"):format(table.concat(st, ", "))
+	end,
+}
+
+local function quicknew(t)
+	return setmetatable(t, signal_aspect_metatable)
+end
+
+--- Signal aspect class.
+-- @type signal_aspect
+
+--- Return a plain version of the signal aspect.
+-- @param[opt=false] raw Bypass metamethods when fetching signal aspects
+-- @return A plain copy of the signal aspect object.
+function signal_aspect:plain(raw)
+	local t = {}
+	for _, k in pairs {"main", "dst", "shunt", "proceed_as_main", "group", "name"} do
+		local v
+		if raw then
+			v = rawget(self, k)
+		else
+			v = self[k]
+		end
+		t[k] = v
+	end
+	return t
+end
+
+--- Create (or copy) a signal aspect object.
+-- Note that signal aspect objects can also be created by calling the `advtrains.interlocking.aspect` table.
+-- @return The newly created signal aspect object.
+function signal_aspect:new()
+	if type(self) ~= "table" then
+		return quicknew{}
+	end
+	local newasp = {}
+	for _, k in pairs {"main", "dst"} do
+		if type(self[k]) == "table" then
+			if self[k].free then
+				newasp[k] = self[k].speed
+			else
+				newasp[k] = 0
+			end
+		else
+			newasp[k] = self[k]
+		end
+	end
+	if type(self.shunt) == "table" then
+		newasp.shunt = self.shunt.free
+		newasp.proceed_as_main = self.shunt.proceed_as_main
+	else
+		newasp.shunt = self.shunt
+	end
+	for _, k in pairs {"group", "name"} do
+		newasp[k] = self[k]
+	end
+	return quicknew(newasp)
+end
+
+--- Modify the signal aspect in-place to fit in the specific signal group.
+-- @param group The signal group. The `nil` indicates a generic group.
+-- @return The (now modified) signal aspect itself.
+function signal_aspect:to_group(group)
+	local cg = self.group
+	local gdef = registered_groups[group]
+	if type(self.name) ~= "string" then
+		self.name = nil
+	end
+	if not gdef then
+		for k in pairs(named_aspect_aspfields) do
+			rawset(self, k, self[k])
+		end
+		self.group = nil
+		self.name = nil
+		return self
+	elseif cg == group and gdef.aspects[self.name] then
+		return self
+	end
+	local newidx = 1
+	if self.main == 0 then
+		newidx = #gdef.aspects
+	end
+	local cgdef = registered_groups[cg]
+	if cgdef then
+		local idx = (cgdef.aspects[self.name] or {}).index
+		if idx then
+			if idx >= #cgdef.aspects then
+				idx = #gdef.aspects
+			elseif idx >= #gdef.aspects then
+				idx = #gdef.aspects-1
+			end
+			newidx = idx
+		end
+	end
+	self.group = group
+	self.name = group.aspects[newidx][1]
+	return self
+end
+
+--- Modify the signal aspect in-place to indicate a specific distant aspect.
+-- @param dst The distant aspect
+-- @param[opt=1] shift The phase shift of the current signal.
+-- @return The (now modified) signal aspect itself.
+function signal_aspect:adjust_distant(dst, shift)
+	if (shift or -1) < 0 then
+		shift = 1
+	end
+	if not dst then
+		self.dst = nil
+		return self
+	end
+	if self.main ~= 0 then
+		self.dst = dst.main
+	else
+		self.dst = nil
+	end
+	local dgdef = registered_groups[dst.group]
+	if dgdef then
+		if self.group == dst.group and shift == 0 then
+			self.name = dst.name
+		else
+			local idx = (dgdef.aspects[dst.name] or {}).index
+			if idx then
+				idx = math.max(idx-shift, 1)
+				self.group = dst.group
+				self.name = dgdef.aspects[idx][1]
+			end
+		end
+	end
+	return self
+end
+
+--- Signal groups.
+-- @section signal_group
+
+--- Register a signal group.
+-- @function register_group
+-- @param def The definition table.
+local function register_group(def)
+	local t = {}
+	local name = def.name
+	if type(name) ~= "string" then
+		return error("Expected signal group name to be a string, got " .. type(name))
+	elseif registered_groups[name] then
+		return error(string.format("Attempt to redefine signal group %q, previously defined in %s", name, registered_groups[name].defined))
+	end
+	t.name = name
+
+	t.defined = debug.getinfo(2, "S").short_src or "[?]"
+
+	local label = def.label or name
+	if type(label) ~= "string" then
+		return error("Label is not a string")
+	end
+	t.label = label
+
+	local mainasps = {}
+	for idx, asp in pairs(def.aspects) do
+		local idxtp = type(idx)
+		if idxtp == "string" then
+			local t = {}
+			t.name = idx
+
+			local label = asp.label or idx
+			if type(label) ~= "string" then
+				return error("Aspect label is not a string")
+			end
+			t.label = label
+
+			for k in pairs(named_aspect_aspfields) do
+				t[k] = asp[k]
+			end
+
+			mainasps[idx] = t
+		end
+	end
+	if #def.aspects < 2 then
+		return error("Insufficient entries in signal aspect list")
+	end
+	for idx, asplist in ipairs(def.aspects) do
+		if type(asplist) ~= "table" then
+			asplist = {asplist}
+		else
+			asplist = table.copy(asplist)
+		end
+		if #asplist < 1 then
+			error("Invalid entry in signal aspect list")
+		end
+		for _, k in ipairs(asplist) do
+			if type(k) ~= "string" then
+				return error("Invalid signal aspect ID")
+			end
+			local asp = mainasps[k]
+			if not asp then
+				return error("Invalid signal aspect ID")
+			end
+			if asp.index ~= nil then
+				return error("Attempt to assign a signal aspect to multiple numeric indices")
+			end
+			asp.index = idx
+		end
+		mainasps[idx] = asplist
+	end
+	t.aspects = mainasps
+
+	registered_groups[name] = t
+end
+
+--- Get the definition of a signal group.
+-- @function get_group_definition
+-- @param name The name of the signal group.
+-- @return[1] The definition for the signal group (if present).
+-- @return[2] The nil constant (otherwise).
+local function get_group_definition(name)
+	local t = registered_groups[name]
+	if t then
+		return table.copy(t)
+	else
+		return nil
+	end
+end
+
+local lib = {
+	register_group = register_group,
+	get_group_definition = get_group_definition,
+}
+
+local libmt = {
+	__call = function(_, ...)
+		return signal_aspect.new(...)
+	end,
+}
+
+return setmetatable(lib, libmt)
diff --git a/advtrains_interlocking/distant.lua b/advtrains_interlocking/distant.lua
index 4175875..32ada82 100644
--- a/advtrains_interlocking/distant.lua
+++ b/advtrains_interlocking/distant.lua
@@ -6,7 +6,6 @@
 local db_distant = {}
 local db_distant_of = {}
 
-local A = advtrains.interlocking.aspects
 local pts = advtrains.encode_pos
 local stp = advtrains.decode_pos
 
diff --git a/advtrains_interlocking/init.lua b/advtrains_interlocking/init.lua
index 1a8ef07..4d959cc 100644
--- a/advtrains_interlocking/init.lua
+++ b/advtrains_interlocking/init.lua
@@ -12,7 +12,7 @@ end
 
 local modpath = minetest.get_modpath(minetest.get_current_modname()) .. DIR_DELIM
 
-advtrains.interlocking.aspects = dofile(modpath.."signal_aspects.lua")
+advtrains.interlocking.aspect = dofile(modpath.."aspect.lua")
 
 dofile(modpath.."database.lua")
 dofile(modpath.."distant.lua")
diff --git a/advtrains_interlocking/signal_api.lua b/advtrains_interlocking/signal_api.lua
index 1b4a21c..ce8854a 100644
--- a/advtrains_interlocking/signal_api.lua
+++ b/advtrains_interlocking/signal_api.lua
@@ -19,27 +19,7 @@ advtrains.interlocking.FULL_FREE = {
 	proceed_as_main = true,
 }
 
-local function convert_aspect_if_necessary(asp)
-	if type(asp.main) == "table" then
-		local newasp = {} 
-		if asp.main.free then
-			newasp.main = asp.main.speed
-		else
-			newasp.main = 0
-		end
-		if asp.dst and asp.dst.free then
-			newasp.dst = asp.dst.speed
-		else
-			newasp.dst = 0
-		end
-		newasp.proceed_as_main = asp.shunt.proceed_as_main
-		newasp.shunt = asp.shunt.free
-		-- Note: info table not transferred, it's not used right now
-		return newasp
-	end
-	return asp
-end
-advtrains.interlocking.signal_convert_aspect_if_necessary = convert_aspect_if_necessary
+advtrains.interlocking.signal_convert_aspect_if_necessary = advtrains.interlocking.aspect
 
 function advtrains.interlocking.update_signal_aspect(tcbs, skipdst)
 	if tcbs.signal then
@@ -79,7 +59,7 @@ function advtrains.interlocking.signal_rc_handler(pos, node, player, itemstack,
 	end
 	advtrains.interlocking.show_signal_form(pos, node, pname)
 end
-	
+
 function advtrains.interlocking.show_signal_form(pos, node, pname)
 	local sigd = advtrains.interlocking.db.get_sigd_for_signal(pos)
 	if sigd then
@@ -92,7 +72,7 @@ function advtrains.interlocking.show_signal_form(pos, node, pname)
 				advtrains.interlocking.signal_set_aspect(pos, aspect)
 			end
 			local isasp = advtrains.interlocking.signal_get_aspect(pos, node)
-			
+
 			advtrains.interlocking.show_signal_aspect_selector(
 				pname,
 				ndef.advtrains.supported_aspects,
@@ -123,7 +103,7 @@ local function ipmarker(ipos, connid)
 	local node_ok, conns, rhe = advtrains.get_rail_info_at(ipos, advtrains.all_tracktypes)
 	if not node_ok then return end
 	local yaw = advtrains.dir_to_angle(conns[connid].c)
-	
+
 	-- using tcbmarker here
 	local obj = minetest.add_entity(vector.add(ipos, {x=0, y=0.2, z=0}), "advtrains_interlocking:tcbmarker")
 	if not obj then return end
diff --git a/advtrains_interlocking/signal_aspect_accessors.lua b/advtrains_interlocking/signal_aspect_accessors.lua
index e419515..d91df31 100644
--- a/advtrains_interlocking/signal_aspect_accessors.lua
+++ b/advtrains_interlocking/signal_aspect_accessors.lua
@@ -1,33 +1,12 @@
 --- Signal aspect accessors
 -- @module advtrains.interlocking
 
-local A = advtrains.interlocking.aspects
+local A = advtrains.interlocking.aspect
 local D = advtrains.distant
 local I = advtrains.interlocking
 local N = advtrains.ndb
 local pts = advtrains.roundfloorpts
 
-local signal_aspect_metatable = {
-	__tostring = function(asp)
-		local st = {}
-		if asp.type2group and asp.type2name then
-			table.insert(st, string.format("%q in group %q", asp.type2name, asp.type2group))
-		end
-		if asp.main then
-			table.insert(st, string.format("current %d", asp.main))
-		end
-		if asp.main ~= 0 then
-			if asp.dst then
-				table.insert(st, string.format("next %d", asp.dst))
-			end
-			if asp.proceed_as_main then
-				table.insert(st, "proceed as main")
-			end
-		end
-		return string.format("[%s]", table.concat(st, ", "))
-	end,
-}
-
 local get_aspect
 
 local supposed_aspects = {}
@@ -37,9 +16,9 @@ local supposed_aspects = {}
 -- @param db The new database.
 function I.load_supposed_aspects(tbl)
 	if tbl then
-		supposed_aspects = tbl
-		for _, v in pairs(tbl) do
-			setmetatable(v, signal_aspect_metatable)
+		supposed_aspects = {}
+		for k, v in pairs(tbl) do
+			supposed_aspects[k] = A(v)
 		end
 	end
 end
@@ -48,7 +27,11 @@ end
 -- @function save_supposed_aspects
 -- @return The current database in use.
 function I.save_supposed_aspects()
-	return supposed_aspects
+	local t = {}
+	for k, v in pairs(supposed_aspects) do
+		t[k] = v:plain(true)
+	end
+	return t
 end
 
 --- Read the aspect of a signal strictly from cache.
@@ -72,7 +55,7 @@ end
 -- @return[2] An empty table (otherwise).
 local function get_ndef(pos)
 	local node = N.get_node(pos)
-	return minetest.registered_nodes[node.name] or {}
+	return (minetest.registered_nodes[node.name] or {}), node
 end
 
 --- Get the aspects supported by a signal.
@@ -94,43 +77,18 @@ end
 -- @return The adjusted signal aspect.
 -- @return The information to pass to the `advtrains.set_aspect` field in the node definitions.
 local function adjust_aspect(pos, asp)
-	asp = table.copy(I.signal_convert_aspect_if_necessary(asp))
-	setmetatable(asp, signal_aspect_metatable)
+	local asp = A(asp)
 
 	local mainpos = D.get_main(pos)
 	local nxtasp
 	if mainpos then
 		nxtasp = get_aspect(mainpos)
 	end
-	if asp.main ~= 0 and mainpos then
-		asp.dst = nxtasp.main
-	else
-		asp.dst = nil
-	end
-
 	local suppasp = get_supported_aspects(pos)
 	if not suppasp then
-		return asp, asp
-	end
-	local stype = suppasp.type
-	if stype == 2 then
-		local group = suppasp.group
-		local name
-		if suppasp.dst_shift and nxtasp then
-			asp.main = nil
-			name = A.type1_to_type2main(nxtasp, group, suppasp.dst_shift)
-		elseif asp.main ~= 0 and nxtasp and nxtasp.type2group == group and nxtasp.type2name then
-			name = A.get_type2_dst(group, nxtasp.type2name)
-		else
-			name = A.type1_to_type2main(asp, group)
-		end
-		asp.type2group = group
-		asp.type2name = name
-		return asp, name
+		return asp
 	end
-	asp.type2name = nil
-	asp.type2group = nil
-	return asp, asp
+	return asp:adjust_distant(nxtasp, suppasp.dst_shift):to_group(suppasp.group)
 end
 
 --- Get the aspect of a signal without accessing the cache.
@@ -140,13 +98,9 @@ end
 -- @return[1] The signal aspect adjusted using `adjust_aspect` (if present).
 -- @return[2] The nil constant (otherwise).
 local function get_real_aspect(pos)
-	local ndef = get_ndef(pos)
+	local ndef, node = get_ndef(pos)
 	if ndef.advtrains and ndef.advtrains.get_aspect then
 		local asp = ndef.advtrains.get_aspect(pos, node) or I.DANGER
-		local suppasp = get_supported_aspects(pos)
-		if suppasp and suppasp.type == 2 then
-			asp = A.type2_to_type1(suppasp, asp)
-		end
 		return adjust_aspect(pos, asp)
 	end
 	return nil
@@ -176,11 +130,11 @@ local function set_aspect(pos, asp, skipdst)
 	local ndef = minetest.registered_nodes[node.name]
 	if ndef and ndef.advtrains and ndef.advtrains.set_aspect then
 		local oldasp = I.signal_get_aspect(pos) or DANGER
-		local newasp, aspval = adjust_aspect(pos, asp)
+		local newasp = adjust_aspect(pos, asp)
 		set_supposed_aspect(pos, newasp)
-		ndef.advtrains.set_aspect(pos, node, aspval)
+		ndef.advtrains.set_aspect(pos, node, newasp)
 		I.signal_on_aspect_changed(pos)
-		local aspect_changed = A.not_equalp(oldasp, newasp)
+		local aspect_changed = oldasp ~= newasp
 		if (not skipdst) and aspect_changed then
 			D.update_main(pos)
 		end
diff --git a/advtrains_interlocking/signal_aspect_ui.lua b/advtrains_interlocking/signal_aspect_ui.lua
index 186d2fe..d36c6bc 100644
--- a/advtrains_interlocking/signal_aspect_ui.lua
+++ b/advtrains_interlocking/signal_aspect_ui.lua
@@ -1,7 +1,7 @@
 local F = advtrains.formspec
 local players_aspsel = {}
 
-local function describe_t1_main_aspect(spv)
+local function describe_main_aspect(spv)
 	if spv == 0 then
 		return attrans("Danger (halt)")
 	elseif spv == -1 then
@@ -13,7 +13,7 @@ local function describe_t1_main_aspect(spv)
 	end
 end
 
-local function describe_t1_shunt_aspect(shunt)
+local function describe_shunt_aspect(shunt)
 	if shunt then
 		return attrans("Shunting allowed")
 	else
@@ -21,7 +21,7 @@ local function describe_t1_shunt_aspect(shunt)
 	end
 end
 
-local function describe_t1_distant_aspect(spv)
+local function describe_distant_aspect(spv)
 	if spv == 0 then
 		return attrans("Expect to stop at the next signal")
 	elseif spv == -1 then
@@ -33,9 +33,9 @@ local function describe_t1_distant_aspect(spv)
 	end
 end
 
-advtrains.interlocking.describe_t1_main_aspect = describe_t1_main_aspect
-advtrains.interlocking.describe_t1_shunt_aspect = describe_t1_shunt_aspect
-advtrains.interlocking.describe_t1_distant_aspect = describe_t1_distant_aspect
+advtrains.interlocking.describe_main_aspect = describe_main_aspect
+advtrains.interlocking.describe_shunt_aspect = describe_shunt_aspect
+advtrains.interlocking.describe_distant_aspect = describe_distant_aspect
 
 local function dsel(p, q, x, y)
 	if p == nil then
@@ -51,19 +51,23 @@ local function dsel(p, q, x, y)
 	end
 end
 
-local function describe_supported_aspects_t1(suppasp, isasp)
+local function describe_supported_aspects(suppasp, isasp)
 	local t = {}
 
-	local entries = {}
-	local selid = 1
-	for idx, spv in ipairs(suppasp.main) do
-		if isasp and spv == (isasp.main or false) then
+	local entries = {attrans("Use default value")}
+	local selid = 0
+	local mainasps = suppasp.main
+	if type(mainasps) ~= "table" then
+		mainasps = {mainasps or false}
+	end
+	for idx, spv in ipairs(mainasps) do
+		if isasp and spv == rawget(isasp, "main") then
 			selid = idx
 		end
-		entries[idx] = describe_t1_main_aspect(spv)
+		entries[idx+1] = describe_main_aspect(spv)
 	end
 	t.main = entries
-	t.main_current = selid
+	t.main_current = selid+1
 	t.main_string = tostring(isasp.main)
 	if t.main == nil then
 		t.main_string = ""
@@ -83,21 +87,21 @@ local function describe_supported_aspects_t1(suppasp, isasp)
 
 	entries = {}
 	selid = 1
-	for idx, spv in ipairs(suppasp.dst) do
+	for idx, spv in ipairs(suppasp.dst or {}) do
 		if isasp and spv == (isasp.dst or false) then
 			selid = idx
 		end
-		entries[idx] = describe_t1_distant_aspect(spv)
+		entries[idx] = describe_distant_aspect(spv)
 	end
 	t.dst = entries
 	t.dst_current = selid
 	return t
 end
 
-advtrains.interlocking.describe_supported_aspects_t1 = describe_supported_aspects_t1
+advtrains.interlocking.describe_supported_aspects = describe_supported_aspects
 
-local function make_signal_aspect_selector_t1(suppasp, purpose, isasp)
-	local t = describe_supported_aspects_t1(suppasp, isasp)
+local function make_signal_aspect_selector(suppasp, purpose, isasp)
+	local t = describe_supported_aspects(suppasp, isasp)
 	local formmode = 1
 
 	local pos
@@ -142,55 +146,6 @@ local function make_signal_aspect_selector_t1(suppasp, purpose, isasp)
 	return table.concat(form)
 end
 
-local function make_signal_aspect_selector_t2(suppasp, purpose, isasp)
-	local def = advtrains.interlocking.aspects.get_type2_definition(suppasp.group)
-	if not def then
-		return nil
-	end
-	local formmode = 1
-
-	local pos
-	if type(purpose) == "table" then
-		formmode = 2
-		pos = purpose.pos
-	end
-	local form = {
-		"formspec_version[4]",
-		string.format("size[8,%f]", ({4.25, 10.25})[formmode]),
-		F.S_label(0.5, 0.5, "Select signal aspect")
-	}
-	if formmode == 1 then
-		form[#form+1] = F.label(0.5, 1, purpose)
-	else
-		form[#form+1] = F.S_label(0.5, 1, "Signal at @1", minetest.pos_to_string(pos))
-	end
-
-	local entries = {}
-	local selid = #def.main
-	if isasp then
-		if isasp.type2name ~= def.main[selid].name then
-			selid = 1
-		end
-	end
-	if selid > 1 then
-		selid = 2
-	end
-	local entries = {
-		def.main[1].label,
-		def.main[#def.main].label,
-	}
-	form[#form+1] = F.S_label(0.5, 1.5, "Signal group: @1", def.label)
-	form[#form+1] = F.dropdown(0.5, 2, 7, "asp_sel", entries, selid, true)
-	form[#form+1] = F.S_button_exit(0.5, 3, 7, "asp_save", "Save signal aspect")
-
-	if formmode == 2 then
-		form[#form+1] = advtrains.interlocking.make_ip_formspec_component(pos, 0.5, 4, 7)
-		form[#form+1] = advtrains.interlocking.make_dst_formspec_component(pos, 0.5, 5.5, 7, 4.25)
-	end
-
-	return table.concat(form)
-end
-
 function advtrains.interlocking.show_signal_aspect_selector(pname, p_suppasp, p_purpose, callback, isasp)
 	local suppasp = p_suppasp or {
 		main = {0, -1},
@@ -205,18 +160,7 @@ function advtrains.interlocking.show_signal_aspect_selector(pname, p_suppasp, p_
 		purpose = {pname = pname, pos = pos}
 	end
 
-	local form
-	if suppasp.type == 2 then
-		if suppasp.dst_shift then
-			if pos then
-				advtrains.interlocking.show_ip_form(pos, pname)
-			end
-			return
-		end
-		form = make_signal_aspect_selector_t2(suppasp, purpose, isasp)
-	else
-		form = make_signal_aspect_selector_t1(suppasp, purpose, isasp)
-	end
+	local form = make_signal_aspect_selector(suppasp, purpose, isasp)
 	if not form then
 		return
 	end
@@ -241,9 +185,9 @@ local function usebool(sup, val, free)
 	end
 end
 
-local function get_aspect_from_formspec_t1(suppasp, fields, psl)
+local function get_aspect_from_formspec(suppasp, fields, psl)
 	local maini = tonumber(fields.asp_mainsel)
-	local main = suppasp.main[maini]
+	local main = suppasp.main[(maini or 0)-1]
 	if not maini then
 		local mainval = fields.asp_mainval
 		if mainval == "-1" then
@@ -253,6 +197,8 @@ local function get_aspect_from_formspec_t1(suppasp, fields, psl)
 		else
 			main = nil
 		end
+	elseif maini <= 1 then
+		main = nil
 	end
 	local shunti = tonumber(fields.asp_shunt)
 	local shunt = suppasp.shunt
@@ -271,19 +217,6 @@ local function get_aspect_from_formspec_t1(suppasp, fields, psl)
 	}
 end
 
-local function get_aspect_from_formspec_t2(suppasp, fields, psl)
-	local sel = tonumber(fields.asp_sel)
-	local def = advtrains.interlocking.aspects.get_type2_definition(suppasp.group)
-	if not (sel and def) then
-		return
-	end
-	if sel ~= 1 then
-		sel = #def.main
-	end
-	local asp = advtrains.interlocking.aspects.type2_to_type1(suppasp, sel)
-	return asp
-end
-
 minetest.register_on_player_receive_fields(function(player, formname, fields)
 	local pname = player:get_player_name()
 	local psl = players_aspsel[pname]
@@ -292,11 +225,7 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 			local suppasp = psl.suppasp
 			if fields.asp_save then
 				local asp
-				if suppasp.type == 2 then
-					asp = get_aspect_from_formspec_t2(suppasp, fields, psl)
-				else
-					asp = get_aspect_from_formspec_t1(suppasp, fields, psl)
-				end
+				asp = get_aspect_from_formspec(suppasp, fields, psl)
 				if asp then
 					psl.callback(pname, asp)
 				end
diff --git a/advtrains_interlocking/signal_aspects.lua b/advtrains_interlocking/signal_aspects.lua
deleted file mode 100644
index 14e04c7..0000000
--- a/advtrains_interlocking/signal_aspects.lua
+++ /dev/null
@@ -1,202 +0,0 @@
---- Signal aspect handling.
--- @module advtrains.interlocking.aspects
-
-local type2defs = {}
-
---- Register a type 2 signal group.
--- @function register_type2
--- @param def The definition table.
-local function register_type2(def)
-	local t = {type = 2}
-	local name = def.name
-	if type(name) ~= "string" then
-		return error("Name is not a string")
-	elseif type2defs[name] then
-		return error(string.format("Attempt to redefine type 2 signal aspect group %q, previously defined in %s", name, type2defs[name].defined))
-	end
-	t.name = name
-
-	t.defined = debug.getinfo(2, "S").short_src or "[?]"
-
-	local label = def.label or name
-	if type(label) ~= "string" then
-		return error("Label is not a string")
-	end
-	t.label = label
-
-	local mainasps = {}
-	for idx, asp in ipairs(def.main) do
-		local t = {}
-		local name = asp.name
-		if type(name) ~= "string" then
-			return error("Aspect name is not a string")
-		end
-		t.name = name
-
-		local label = asp.label or name
-		if type(label) ~= "string" then
-			return error("Aspect label is not a string")
-		end
-		t.label = label
-
-		t.main = asp.main
-		t.shunt = asp.shunt
-		t.proceed_as_main = asp.proceed_as_main
-		mainasps[idx] = t
-		mainasps[name] = idx
-	end
-	t.main = mainasps
-
-	type2defs[name] = t
-end
-
---- Get the definition of a type 2 signal group.
--- @function get_type2_definition
--- @param name The name of the signal group.
--- @return[1] The definition for the signal group (if present).
--- @return[2] The nil constant (otherwise).
-local function get_type2_definition(name)
-	local t = type2defs[name]
-	if t then
-		return table.copy(t)
-	else
-		return nil
-	end
-end
-
---- Get the name of the distant aspect before the current aspect.
--- @function get_type2_dst
--- @param group The name of the group.
--- @param name The name of the current aspect.
--- @return[1] The name of the distant aspect (if present).
--- @return[2] The nil constant (otherwise).
-local function get_type2_dst(group, name)
-	local def = type2defs[group]
-	if not def then
-		return nil
-	end
-	local aspidx = name
-	if type(name) ~= "number" then
-		aspidx = def.main[name] or 1
-	end
-	return def.main[math.max(1, aspidx-1)].name
-end
-
---- Convert a type 2 signal aspect to a type 1 signal aspect.
--- @function type2_to_type1
--- @param suppasp The table of supported aspects for the signal.
--- @param asp The name of the signal aspect.
--- @return[1] The type 1 signal aspect table (if present).
--- @return[2] The nil constant (otherwise).
-local function type2_to_type1(suppasp, asp)
-	local name = suppasp.group
-	local shift = suppasp.dst_shift
-	local def = type2defs[name]
-	if not def then
-		return nil
-	end
-	local aspidx
-	if type(asp) == "number" then
-		aspidx = asp
-	else
-		aspidx = def.main[asp] or 2
-	end
-	local realidx = math.min(#def.main, aspidx+(shift or 0))
-	local asptbl = def.main[realidx]
-	if not asptbl then
-		return nil
-	end
-	if type(asp) == "number" then
-		asp = asptbl.name
-	end
-	local main, shunt, dst
-	if shift then
-		dst = asptbl.main
-	else
-		main = asptbl.main
-		shunt = asptbl.shunt
-		dst = def.main[math.min(#def.main, aspidx+1)].main
-	end
-	if main == 0 then
-		dst = nil
-	end
-
-	local t = {
-		main = main,
-		shunt = shunt,
-		proceed_as_main = asptbl.proceed_as_main,
-		type2name = asptbl.name,
-		type2group = name,
-		dst = dst,
-	}
-	if aspidx > 1 and aspidx < #asptbl then
-		t.dst = asptbl[aspidx+1].main
-	end
-	return t
-end
-
---- Convert a type 1 signal aspect table to a type 2 signal aspect.
--- @function type1_to_type2main
--- @param asp The type 1 signal aspect table
--- @param group The signal aspect group
--- @param[opt=0] shift The shift for the signal aspect.
--- @return[1] The name of the signal aspect (if present).
--- @return[2] The nil constant (otherwise).
-local function type1_to_type2main(asp, group, shift)
-	local def = type2defs[group]
-	if not def then
-		return nil
-	end
-	local t_main = def.main
-	local idx
-	if group == asp.type2group and t_main[asp.type2name] then
-		idx = t_main[asp.type2name]
-	elseif not asp.main or asp.main == -1 then
-		idx = 1
-	elseif asp.main == 0 then
-		idx = #t_main
-	else
-		idx = #t_main-1
-	end
-	return t_main[math.max(1, idx-(shift or 0))].name
-end
-
---- Compare two type 1 signal aspect tables.
--- @function equalp
--- @param asp1 The first signal aspect table.
--- @param asp2 The second signal aspect table.
--- @return Whether the two signal aspect tables give the same (type 1 aspect) information.
-local function equalp(asp1, asp2)
-	if asp1 == asp2 then -- same reference
-		return true
-	else
-		for _, k in pairs {"main", "shunt", "dst"} do
-			if asp1[k] ~= asp2[k] then
-				return false
-			end
-		end
-	end
-	if asp1.type2group and asp1.type2group == asp2.type2group then
-		return asp1.type2name == asp2.type2name
-	end
-	return true
-end
-
---- Compare two signal aspect tables.
--- @function not_equalp
--- @param asp1 The first signal aspect table.
--- @param asp2 The second signal aspect table.
--- @return The negation of `equalp``(asp1, asp2)`.
-local function not_equalp(asp1, asp2)
-	return not equalp(asp1, asp2)
-end
-
-return {
-	register_type2 = register_type2,
-	get_type2_definition = get_type2_definition,
-	get_type2_dst = get_type2_dst,
-	type2_to_type1 = type2_to_type1,
-	type1_to_type2main = type1_to_type2main,
-	equalp = equalp,
-	not_equalp = not_equalp,
-}
diff --git a/advtrains_interlocking/spec/basic_signalling_spec.lua b/advtrains_interlocking/spec/basic_signalling_spec.lua
index cce0f15..a4e1e3a 100644
--- a/advtrains_interlocking/spec/basic_signalling_spec.lua
+++ b/advtrains_interlocking/spec/basic_signalling_spec.lua
@@ -8,7 +8,7 @@ mineunit("core")
 
 _G.advtrains = {
 	interlocking = {
-		aspects = fixture("../../signal_aspects"),
+		aspect = fixture("../../aspect"),
 	},
 	ndb = {
 		get_node = minetest.get_node,
@@ -31,12 +31,16 @@ minetest.register_node("advtrains_interlocking:signal_sign", {
 
 local D = advtrains.distant
 local I = advtrains.interlocking
+local A = I.aspect
 
 local stub_aspect_t1 = {
 	free = {main = -1},
 	slow = {main = 6},
 	danger = {main = 0, shunt = false},
 }
+for k, v in pairs(stub_aspect_t1) do
+	stub_aspect_t1[k] = A(v)
+end
 local stub_pos_t1 = {}
 for i = 1, 4 do
 	stub_pos_t1[i] = {x = 1, y = 0, z = i}
@@ -55,14 +59,14 @@ describe("API for supposed signal aspects", function()
 		I.load_supposed_aspects(tbl)
 		assert.same(tbl, I.save_supposed_aspects())
 	end)
-	it("should set and get type 1 signals properly", function ()
+	it("should set and get signals properly", function ()
 		local pos = stub_pos_t1[2]
 		local asp = stub_aspect_t1.slow
-		local newasp = { main = math.random(1,5) }
-		assert.same(asp, I.signal_get_aspect(pos))
+		local newasp = A{ main = math.random(1,5) }
+		assert.equal(asp, I.signal_get_aspect(pos))
 		I.signal_set_aspect(pos, newasp)
-		assert.same(newasp, I.signal_get_aspect(pos))
-		assert.same(asp, I.signal_get_real_aspect(pos))
+		assert.equal(newasp, I.signal_get_aspect(pos))
+		assert.equal(asp, I.signal_get_real_aspect(pos))
 		I.signal_set_aspect(pos, asp)
 	end)
 end)
@@ -72,9 +76,9 @@ describe("Distant signaling", function()
 		for i = 1, 2 do
 			D.assign(stub_pos_t1[i], stub_pos_t1[i+1])
 		end
-		assert.same(stub_aspect_t1.danger, I.signal_get_aspect(stub_pos_t1[1]))
-		assert.same({main = 6, dst = 0}, I.signal_get_aspect(stub_pos_t1[2]))
-		assert.same({main = -1, dst = 6}, I.signal_get_aspect(stub_pos_t1[3]))
+		assert.equal(stub_aspect_t1.danger, I.signal_get_aspect(stub_pos_t1[1]))
+		assert.equal(A{main = 6, dst = 0}, I.signal_get_aspect(stub_pos_t1[2]))
+		assert.equal(A{main = -1, dst = 6}, I.signal_get_aspect(stub_pos_t1[3]))
 	end)
 	it("should report assignments properly", function()
 		assert.same({stub_pos_t1[1], "manual"}, {D.get_main(stub_pos_t1[2])})
@@ -82,8 +86,8 @@ describe("Distant signaling", function()
 	end)
 	it("should update distant aspects automatically", function()
 		I.signal_set_aspect(stub_pos_t1[2], {main = 2, dst = -1})
-		assert.same({main = 2, dst = 0}, I.signal_get_aspect(stub_pos_t1[2]))
-		assert.same({main = -1, dst = 2}, I.signal_get_aspect(stub_pos_t1[3]))
+		assert.equal(A{main = 2, dst = 0}, I.signal_get_aspect(stub_pos_t1[2]))
+		assert.equal(A{main = -1, dst = 2}, I.signal_get_aspect(stub_pos_t1[3]))
 	end)
 	it("should unassign signals when one is removed", function()
 		world.set_node(stub_pos_t1[2], "air")
diff --git a/advtrains_interlocking/spec/signal_group_spec.lua b/advtrains_interlocking/spec/signal_group_spec.lua
new file mode 100644
index 0000000..bc9d007
--- /dev/null
+++ b/advtrains_interlocking/spec/signal_group_spec.lua
@@ -0,0 +1,95 @@
+require "mineunit"
+mineunit("core")
+
+_G.advtrains = {
+	interlocking = {
+		aspect = sourcefile("aspect"),
+	},
+	ndb = {
+		get_node = minetest.get_node,
+		swap_node = minetest.swap_node,
+	}
+}
+
+fixture("advtrains_helpers")
+sourcefile("database")
+sourcefile("signal_api")
+sourcefile("distant")
+sourcefile("signal_aspect_accessors")
+
+local A = advtrains.interlocking.aspect
+local D = advtrains.distant
+local I = advtrains.interlocking
+local N = advtrains.ndb
+
+local groupdef = {
+	name = "foo",
+	aspects = {
+		proceed = {main = -1},
+		caution = {},
+		danger = {main = 0},
+		"proceed",
+		{"caution"},
+		"danger",
+	},
+}
+
+for k, v in pairs(groupdef.aspects) do
+	minetest.register_node("advtrains_interlocking:" .. k, {
+		advtrains = {
+			supported_aspects = {
+				group = "foo",
+			},
+			get_aspect = function() return A{group = "foo", name = k} end,
+			set_aspect = function(pos, _, name)
+				N.swap_node(pos, {name = "advtrains_interlocking:" .. name})
+			end,
+		}
+	})
+end
+
+local origin = vector.new(0, 0, 0)
+local dstpos = vector.new(0, 0, 1)
+
+world.layout {
+	{origin, "advtrains_interlocking:danger"},
+	{dstpos, "advtrains_interlocking:proceed"},
+}
+
+describe("signal group registration", function()
+	it("should work", function()
+		A.register_group(groupdef)
+		assert(A.get_group_definition("foo"))
+	end)
+	it("should only be allowed once for the same group", function()
+		assert.has.errors(function() A.register_group(type2def) end)
+	end)
+	it("should handle nonexistant groups", function()
+		assert.is_nil(A.get_group_definition("something_else"))
+	end)
+	it("should reject invalid definitions", function()
+		assert.has.errors(function() A.register_group({}) end)
+		assert.has.errors(function() A.register_group({name="",label={}}) end)
+		assert.has.errors(function() A.register_group({name="",aspects={}}) end)
+	end)
+end)
+
+describe("signal aspect", function()
+	it("should handle empty fields properly", function()
+		assert.equal(A{main = 0}, A{group="foo", name="danger"}:to_group())
+	end)
+	it("should be converted properly", function()
+		assert.equal(A{main = 0}, A{group="foo", name="danger"})
+		assert.equal(A{}, A{group="foo", name="caution"})
+		assert.equal(A{main = -1}, A{group="foo", name="proceed"})
+	end)
+end)
+
+describe("signals in groups", function()
+	it("should support distant signaling", function()
+		assert.equal("caution", A():adjust_distant(A{group="foo",name="danger"}).name)
+		assert.equal("proceed", A():adjust_distant(A{group="foo",name="caution"}).name)
+		assert.equal("proceed", A():adjust_distant(A{group="foo",name="proceed"}).name)
+		assert.equal("danger", A{group="foo",name="danger"}:adjust_distant{}.name)
+	end)
+end)
diff --git a/advtrains_interlocking/spec/type2_spec.lua b/advtrains_interlocking/spec/type2_spec.lua
deleted file mode 100644
index ac23574..0000000
--- a/advtrains_interlocking/spec/type2_spec.lua
+++ /dev/null
@@ -1,117 +0,0 @@
-require "mineunit"
-mineunit("core")
-
-_G.advtrains = {
-	interlocking = {
-		aspects = sourcefile("signal_aspects"),
-	},
-	ndb = {
-		get_node = minetest.get_node,
-		swap_node = minetest.swap_node,
-	}
-}
-
-fixture("advtrains_helpers")
-sourcefile("database")
-sourcefile("signal_api")
-sourcefile("distant")
-sourcefile("signal_aspect_accessors")
-
-local A = advtrains.interlocking.aspects
-local D = advtrains.distant
-local I = advtrains.interlocking
-local N = advtrains.ndb
-
-local type2def = {
-	name = "foo",
-	main = {
-		{name = "proceed", main = -1},
-		{name = "caution"},
-		{name = "danger", main = 0},
-	},
-}
-
-for _, v in pairs(type2def.main) do
-	minetest.register_node("advtrains_interlocking:" .. v.name, {
-		advtrains = {
-			supported_aspects = {
-				type = 2,
-				group = "foo",
-			},
-			get_aspect = function() return v.name end,
-			set_aspect = function(pos, _, name)
-				N.swap_node(pos, {name = "advtrains_interlocking:" .. name})
-			end,
-		}
-	})
-end
-
-local function asp(group, name, dst)
-	return A.type2_to_type1({group = group, dst_shift = shift}, name)
-end
-
-local origin = vector.new(0, 0, 0)
-local dstpos = vector.new(0, 0, 1)
-
-world.layout {
-	{origin, "advtrains_interlocking:danger"},
-	{dstpos, "advtrains_interlocking:proceed"},
-}
-
-describe("type 2 signal group registration", function()
-	it("should work", function()
-		A.register_type2(type2def)
-		assert(A.get_type2_definition("foo"))
-	end)
-	it("should only be allowed once for the same group", function()
-		assert.has.errors(function() A.register_type2(type2def) end)
-	end)
-	it("should handle nonexistant groups", function()
-		assert.is_nil(A.get_type2_definition("something_else"))
-	end)
-	it("should reject invalid definitions", function()
-		assert.has.errors(function() A.register_type2({}) end)
-		assert.has.errors(function() A.register_type2({name="",label={}}) end)
-		assert.has.errors(function() A.register_type2({name="",main={{name={}}}}) end)
-		assert.has.errors(function() A.register_type2({name="",main={{name="",label={}}}}) end)
-	end)
-end)
-
-describe("signal aspect conversion", function()
-	it("should work for converting from type 1 to type 2", function()
-		assert.equal("danger", A.type1_to_type2main({main = 0}, "foo"))
-		assert.equal("caution", A.type1_to_type2main({main = 6}, "foo"))
-		assert.equal("proceed", A.type1_to_type2main({}, "foo"))
-	end)
-	it("should reject invalid type 2 signal information", function()
-		assert.is_nil(A.type1_to_type2main({}, "?"))
-		assert.is_nil(A.type2_to_type1({}, "x"))
-		assert.same(asp("foo","caution"), asp("foo", "x"))
-	end)
-	it("should accept integer indices for type 2 signal aspects", function()
-		assert.same(asp("foo", "caution"), asp("foo", 2))
-		assert.same(asp("foo", "danger"), asp("foo", 10))
-		assert.same(asp("foo", "proceed"), asp("foo", 1))
-		assert.is_nil(asp("foo", -0.5))
-	end)
-end)
-
-describe("type 2 signals", function()
-	it("should support distant signaling", function()
-		assert.equal("caution", A.get_type2_dst("foo", 3))
-		assert.equal("proceed", A.get_type2_dst("foo", "caution"))
-		assert.equal("proceed", A.get_type2_dst("foo", "proceed"))
-	end)
-	it("should work with accessors", function()
-		assert.same(asp("foo","danger"), I.signal_get_aspect(origin))
-		local newasp = {type2group = "foo", type2name = "proceed", main = 6}
-		I.signal_set_aspect(origin, newasp)
-		assert.same(newasp, I.signal_get_aspect(origin))
-	end)
-	it("should work with distant signaling", function()
-		assert.same(asp("foo","proceed"), I.signal_get_aspect(dstpos))
-		local dstasp = {type2group = "foo", type2name = "proceed", dst = 6, main = -1}
-		D.assign(origin, dstpos)
-		assert.same(dstasp, I.signal_get_aspect(dstpos))
-	end)
-end)
diff --git a/advtrains_signals_japan/init.lua b/advtrains_signals_japan/init.lua
index fe74259..7d8dc1e 100644
--- a/advtrains_signals_japan/init.lua
+++ b/advtrains_signals_japan/init.lua
@@ -291,10 +291,10 @@ local aspnames = {
 }
 local function process_signal(name, sigdata, isrpt)
 	local typename = "advtrains_signals_japan:" .. name
-	local type2def = {}
-	type2def.name = typename
-	type2def.main = {}
-	type2def.label = S(string.format("Japanese signal (type %s)", string.upper(name)))
+	local groupdef = {}
+	groupdef.name = typename
+	groupdef.aspects = {}
+	groupdef.label = S(string.format("Japanese signal (type %s)", string.upper(name)))
 	local def = {}
 	local tx = {}
 	def.typename = typename
@@ -322,7 +322,8 @@ local function process_signal(name, sigdata, isrpt)
 			tt[#tt+1] = string.format("0,%d=(advtrains_hud_bg.png\\^[colorize\\:%s)", lightcount-1, color)
 		end
 		tx[aspname] = table.concat(tt, ":")
-		type2def.main[idx] = {name = asp.name, label = S(aspnames[asp.name]), main = asp.main, proceed_as_main = true}
+		groupdef.aspects[idx] = {asp.name}
+		groupdef.aspects[asp.name] = {label = S(aspnames[asp.name]), main = asp.main, proceed_as_main = true}
 	end
 	local invimg = {
 		string.format("[combine:%dx%d", lightcount*4+1, lightcount*4+1),
@@ -337,7 +338,7 @@ local function process_signal(name, sigdata, isrpt)
 	end
 	def.inventory_image = table.concat(invimg, ":")
 	if not isrpt then
-		advtrains.interlocking.aspects.register_type2(type2def)
+		advtrains.interlocking.aspect.register_group(groupdef)
 	end
 	return def
 end
@@ -400,15 +401,14 @@ for _, rtab in ipairs {
 				drop = "advtrains_signals_japan:"..sigtype.."_danger_0",
 				advtrains = {
 					supported_aspects = {
-						type = 2,
 						group = siginfo.typename,
 						dst_shift = siginfo.isdst and 0,
 					},
 					get_aspect = function()
-						return asp
+						return {group = siginfo.typename, name = asp}
 					end,
 					set_aspect = function(pos, node, asp)
-						advtrains.ndb.swap_node(pos, {name = "advtrains_signals_japan:"..sigtype.."_"..asp.."_"..rot, param2 = node.param2})
+						advtrains.ndb.swap_node(pos, {name = "advtrains_signals_japan:"..sigtype.."_"..(asp.name).."_"..rot, param2 = node.param2})
 					end,
 				},
 				on_rightclick = advtrains.interlocking.signal_rc_handler,
-- 
cgit v1.2.3


From 2afe8027986b2a8172d2cb47236e53e8f24b30f5 Mon Sep 17 00:00:00 2001
From: "Y. Wang" <yw05@forksworld.de>
Date: Sun, 26 Mar 2023 16:25:45 +0200
Subject: Allow selecting named aspect

---
 advtrains_interlocking/aspect.lua           |  3 +-
 advtrains_interlocking/signal_aspect_ui.lua | 82 ++++++++++++++++++-----------
 advtrains_signals_japan/init.lua            | 58 +++++++++++++-------
 3 files changed, 91 insertions(+), 52 deletions(-)

(limited to 'advtrains_interlocking/signal_aspect_ui.lua')

diff --git a/advtrains_interlocking/aspect.lua b/advtrains_interlocking/aspect.lua
index 1575fb1..6d6cb93 100644
--- a/advtrains_interlocking/aspect.lua
+++ b/advtrains_interlocking/aspect.lua
@@ -149,7 +149,7 @@ function signal_aspect:to_group(group)
 		end
 	end
 	self.group = group
-	self.name = group.aspects[newidx][1]
+	self.name = gdef.aspects[newidx][1]
 	return self
 end
 
@@ -169,6 +169,7 @@ function signal_aspect:adjust_distant(dst, shift)
 		self.dst = dst.main
 	else
 		self.dst = nil
+		return self
 	end
 	local dgdef = registered_groups[dst.group]
 	if dgdef then
diff --git a/advtrains_interlocking/signal_aspect_ui.lua b/advtrains_interlocking/signal_aspect_ui.lua
index d36c6bc..a81b7fe 100644
--- a/advtrains_interlocking/signal_aspect_ui.lua
+++ b/advtrains_interlocking/signal_aspect_ui.lua
@@ -58,7 +58,7 @@ local function describe_supported_aspects(suppasp, isasp)
 	local selid = 0
 	local mainasps = suppasp.main
 	if type(mainasps) ~= "table" then
-		mainasps = {mainasps or false}
+		mainasps = {mainasps}
 	end
 	for idx, spv in ipairs(mainasps) do
 		if isasp and spv == rawget(isasp, "main") then
@@ -85,16 +85,24 @@ local function describe_supported_aspects(suppasp, isasp)
 	end
 	t.shunt_const = suppasp.shunt ~= nil
 
-	entries = {}
-	selid = 1
-	for idx, spv in ipairs(suppasp.dst or {}) do
-		if isasp and spv == (isasp.dst or false) then
-			selid = idx
+	if suppasp.group then
+		local gdef = advtrains.interlocking.aspect.get_group_definition(suppasp.group)
+		if gdef then
+			t.group = suppasp.group
+			t.groupdef = gdef
+			local entries = {}
+			local selid = 1
+			for idx, name in ipairs(suppasp.name or {}) do
+				entries[idx] = gdef.aspects[name].label
+				if suppasp.group == isasp.group and name == isasp.name then
+					selid = idx
+				end
+			end
+			t.name = entries
+			t.name_current = selid
 		end
-		entries[idx] = describe_distant_aspect(spv)
 	end
-	t.dst = entries
-	t.dst_current = selid
+
 	return t
 end
 
@@ -112,35 +120,35 @@ local function make_signal_aspect_selector(suppasp, purpose, isasp)
 
 	local form = {
 		"formspec_version[4]",
-		string.format("size[8,%f]", ({5.75, 9.25})[formmode]),
+		string.format("size[8,%f]", ({5.75, 10.75})[formmode]),
 		F.S_label(0.5, 0.5, "Select signal aspect"),
 	}
+	local h0 = ({0, 1.5})[formmode]
+	form[#form+1] = F.S_label(0.5, 1.5+h0, "Main aspect")
+	form[#form+1] = F.S_label(0.5, 3+h0, "Shunt aspect")
+	form[#form+1] = F.S_button_exit(0.5, 4.5+h0, 7, "asp_save", "Save signal aspect")
 	if formmode == 1 then
 		form[#form+1] = F.label(0.5, 1, purpose)
-	else
-		form[#form+1] = F.S_label(0.5, 1, "Signal at @1", minetest.pos_to_string(pos))
-	end
-
-	form[#form+1] = F.S_label(0.5, 1.5, "Main aspect")
-	if formmode == 1 then
 		form[#form+1] = F.field(0.5, 2, 7, "asp_mainval", "", t.main_string)
-	else
-		form[#form+1] = F.dropdown(0.5, 2, 7, "asp_mainsel", t.main, t.main_current, true)
+	elseif formmode == 2 then
+		if t.group then
+			form[#form+1] = F.S_label(0.5, 1.5, "Signal aspect group: @1", t.groupdef.label)
+			form[#form+1] = F.dropdown(0.5, 2, 7, "asp_namesel", t.name, t.name_current, true)
+		else
+			form[#form+1] = F.S_label(0.5, 1.5, "This signal does not belong to a signal aspect group.")
+			form[#form+1] = F.S_label(0.5, 2, "You can not use a predefined signal aspect.")
+		end
+		form[#form+1] = F.S_label(0.5, 1, "Signal at @1", minetest.pos_to_string(pos))
+		form[#form+1] = F.dropdown(0.5, 3.5, 7, "asp_mainsel", t.main, t.main_current, true)
+		form[#form+1] = advtrains.interlocking.make_ip_formspec_component(pos, 0.5, 7, 7)
+		form[#form+1] = advtrains.interlocking.make_short_dst_formspec_component(pos, 0.5, 8.5, 7)
 	end
 
-	form[#form+1] = F.S_label(0.5, 3, "Shunt aspect")
 	if formmode == 2 and t.shunt_const then
-		form[#form+1] = F.label(0.5, 3.5, t.shunt[t.shunt_current])
-		form[#form+1] = F.S_label(0.5, 4, "The shunt aspect cannot be changed.")
+		form[#form+1] = F.label(0.5, 3.5+h0, t.shunt[t.shunt_current])
+		form[#form+1] = F.S_label(0.5, 4+h0, "The shunt aspect cannot be changed.")
 	else
-		form[#form+1] = F.dropdown(0.5, 3.5, 7, "asp_shunt", t.shunt, t.shunt_current, true)
-	end
-
-	form[#form+1] = F.S_button_exit(0.5, 4.5, 7, "asp_save", "Save signal aspect")
-
-	if formmode == 2 then
-		form[#form+1] = advtrains.interlocking.make_ip_formspec_component(pos, 0.5, 5.5, 7)
-		form[#form+1] = advtrains.interlocking.make_short_dst_formspec_component(pos, 0.5, 7, 7)
+		form[#form+1] = F.dropdown(0.5, 3.5+h0, 7, "asp_shunt", t.shunt, t.shunt_current, true)
 	end
 
 	return table.concat(form)
@@ -186,12 +194,22 @@ local function usebool(sup, val, free)
 end
 
 local function get_aspect_from_formspec(suppasp, fields, psl)
+	local namei, group, name = tonumber(fields.asp_namesel), suppasp.group, nil
+	local gdef = advtrains.interlocking.aspect.get_group_definition(group)
+	if gdef then
+		local names = suppasp.name or {}
+		name = names[namei] or names[names]
+	else
+		group = nil
+	end
 	local maini = tonumber(fields.asp_mainsel)
-	local main = suppasp.main[(maini or 0)-1]
+	local main = (suppasp.main or {})[(maini or 0)-1]
 	if not maini then
 		local mainval = fields.asp_mainval
 		if mainval == "-1" then
 			main = -1
+		elseif mainval == "x" then
+			main = false
 		elseif string.match(mainval, "^%d+$") then
 			main = tonumber(mainval)
 		else
@@ -209,11 +227,13 @@ local function get_aspect_from_formspec(suppasp, fields, psl)
 	if proceed_as_main == nil then
 		proceed_as_main = shunti == 3
 	end
-	return {
+	return advtrains.interlocking.aspect {
 		main = main,
 		shunt = shunt,
 		proceed_as_main = proceed_as_main,
 		info = {},
+		name = name,
+		group = group,
 	}
 end
 
diff --git a/advtrains_signals_japan/init.lua b/advtrains_signals_japan/init.lua
index 7d8dc1e..84373a9 100644
--- a/advtrains_signals_japan/init.lua
+++ b/advtrains_signals_japan/init.lua
@@ -275,6 +275,34 @@ minetest.register_node("advtrains_signals_japan:pole_0", {
 	drop = "advtrains_signals_japan:pole_0",
 })
 
+advtrains.interlocking.aspect.register_group {
+	name = "advtrains_signals_japan:5a",
+	label = S("Japanese signal"),
+	aspects = {
+		danger = {
+			label = S"Danger (halt)",
+			main = 0,
+		},
+		restrictedspeed = {
+			label = S"Restricted speed",
+		},
+		caution = {
+			label = S"Caution",
+		},
+		reducedspeed = {
+			label = S"Reduced speed",
+		},
+		clear = {
+			label = S"Clear (proceed)",
+		},
+		"clear",
+		"reducedspeed",
+		"caution",
+		"restrictedspeed",
+		"danger",
+	}
+}
+
 local sigdefs = {}
 local lightcolors = {
 	red = "red",
@@ -282,22 +310,9 @@ local lightcolors = {
 	yellow = "orange",
 	distant = "purple",
 }
-local aspnames = {
-	danger = "Danger (halt)",
-	restrictedspeed = "Restricted speed",
-	caution = "Caution",
-	reducedspeed = "Reduced speed",
-	clear = "Clear (proceed)",
-}
 local function process_signal(name, sigdata, isrpt)
-	local typename = "advtrains_signals_japan:" .. name
-	local groupdef = {}
-	groupdef.name = typename
-	groupdef.aspects = {}
-	groupdef.label = S(string.format("Japanese signal (type %s)", string.upper(name)))
 	local def = {}
 	local tx = {}
-	def.typename = typename
 	def.textures = tx
 	def.desc = sigdata.desc
 	def.isdst = isrpt
@@ -307,6 +322,7 @@ local function process_signal(name, sigdata, isrpt)
 		lightcount = lightcount+1
 	end
 	def.lightcount = lightcount
+	def.suppasp_names = {}
 	for idx, asp in ipairs(sigdata.aspects) do
 		local aspname = asp.name
 		local tt = {
@@ -322,8 +338,7 @@ local function process_signal(name, sigdata, isrpt)
 			tt[#tt+1] = string.format("0,%d=(advtrains_hud_bg.png\\^[colorize\\:%s)", lightcount-1, color)
 		end
 		tx[aspname] = table.concat(tt, ":")
-		groupdef.aspects[idx] = {asp.name}
-		groupdef.aspects[asp.name] = {label = S(aspnames[asp.name]), main = asp.main, proceed_as_main = true}
+		def.suppasp_names[idx] = aspname
 	end
 	local invimg = {
 		string.format("[combine:%dx%d", lightcount*4+1, lightcount*4+1),
@@ -337,9 +352,6 @@ local function process_signal(name, sigdata, isrpt)
 		invimg[lightcount+2] = string.format("%d,%d=(advtrains_hud_bg.png\\^[resize\\:3x3\\^[colorize\\:%s)", 2*lightcount-1, 4*lightcount-3, lightcolors.distant)
 	end
 	def.inventory_image = table.concat(invimg, ":")
-	if not isrpt then
-		advtrains.interlocking.aspect.register_group(groupdef)
-	end
 	return def
 end
 for sigtype, sigdata in pairs {
@@ -401,11 +413,17 @@ for _, rtab in ipairs {
 				drop = "advtrains_signals_japan:"..sigtype.."_danger_0",
 				advtrains = {
 					supported_aspects = {
-						group = siginfo.typename,
+						group = "advtrains_signals_japan:5a",
+						name = siginfo.suppasp_names,
 						dst_shift = siginfo.isdst and 0,
+						main = (not siginfo.isdst) and {} or false
 					},
 					get_aspect = function()
-						return {group = siginfo.typename, name = asp}
+						local main
+						if siginfo.isdst then
+							main = false
+						end
+						return {group = "advtrains_signals_japan:5a", name = asp, main = main}
 					end,
 					set_aspect = function(pos, node, asp)
 						advtrains.ndb.swap_node(pos, {name = "advtrains_signals_japan:"..sigtype.."_"..(asp.name).."_"..rot, param2 = node.param2})
-- 
cgit v1.2.3


From 6fd845baec0f5aa8b7cdee1adf8d05061a643242 Mon Sep 17 00:00:00 2001
From: orwell <orwell@bleipb.de>
Date: Thu, 23 May 2024 00:58:24 +0200
Subject: Connect the ropes, start on making the UI work

---
 advtrains/passive.lua                              |   2 +-
 advtrains_interlocking/database.lua                |   2 +-
 advtrains_interlocking/distant.lua                 | 200 -----------
 advtrains_interlocking/init.lua                    |   3 -
 advtrains_interlocking/route_ui.lua                |  18 +-
 advtrains_interlocking/routesetting.lua            |  15 +-
 advtrains_interlocking/signal_api.lua              | 220 +++----------
 advtrains_interlocking/signal_aspect_accessors.lua | 163 ---------
 advtrains_interlocking/signal_aspect_ui.lua        | 366 ++++++++-------------
 advtrains_interlocking/tcb_ts_ui.lua               |  11 +-
 advtrains_signals_japan/init.lua                   |   6 +-
 advtrains_signals_ks/init.lua                      |  23 +-
 12 files changed, 220 insertions(+), 809 deletions(-)
 delete mode 100644 advtrains_interlocking/distant.lua
 delete mode 100644 advtrains_interlocking/signal_aspect_accessors.lua

(limited to 'advtrains_interlocking/signal_aspect_ui.lua')

diff --git a/advtrains/passive.lua b/advtrains/passive.lua
index 231da82..37b79e4 100644
--- a/advtrains/passive.lua
+++ b/advtrains/passive.lua
@@ -57,7 +57,7 @@ function advtrains.setstate(parpos, newstate, pnode)
 		return false, "train_here"
 	end
 	
-	if advtrains.interlocking and advtrains.interlocking.route.has_route_lock(minetest.encode_pos(pos)) then
+	if advtrains.interlocking and advtrains.interlocking.route.has_route_lock(advtrains.encode_pos(pos)) then
 		return false, "route_lock_here"
 	end
 	
diff --git a/advtrains_interlocking/database.lua b/advtrains_interlocking/database.lua
index 4213c3d..e2df547 100644
--- a/advtrains_interlocking/database.lua
+++ b/advtrains_interlocking/database.lua
@@ -1006,7 +1006,7 @@ end
 function ildb.get_ip_signal_asp(pts, connid)
 	local p = ildb.get_ip_signal(pts, connid)
 	if p then
-		local asp = advtrains.interlocking.signal_get_aspect(p)
+		local asp = advtrains.interlocking.signal.get_aspect(p)
 		if not asp then
 			atlog("Clearing orphaned signal influence point", pts, "/", connid)
 			ildb.clear_ip_signal(pts, connid)
diff --git a/advtrains_interlocking/distant.lua b/advtrains_interlocking/distant.lua
deleted file mode 100644
index 32ada82..0000000
--- a/advtrains_interlocking/distant.lua
+++ /dev/null
@@ -1,200 +0,0 @@
---- Distant signaling.
--- This module implements a database backend for distant signal assignments.
--- The actual modifications to signal aspects are still done by signal aspect accessors.
--- @module advtrains.interlocking.distant
-
-local db_distant = {}
-local db_distant_of = {}
-
-local pts = advtrains.encode_pos
-local stp = advtrains.decode_pos
-
---- Replace the distant signal assignment database.
--- @function load
--- @param db The new database to load.
-local function db_load(x)
-	if type(x) ~= "table" then
-		return
-	end
-	db_distant = x.distant
-	db_distant_of = x.distant_of
-end
-
---- Retrieve the current distant signal assignment database.
--- @function save
--- @return The current database.
-local function db_save()
-	return {
-		distant = db_distant,
-		distant_of = db_distant_of,
-	}
-end
-
-local update_signal, update_main, update_dst
-
---- Unassign a distant signal.
--- @function unassign_dst
--- @param dst The position of the distant signal.
--- @param[opt=false] force Whether to skip callbacks.
-local function unassign_dst(dst, force)
-	local pts_dst = pts(dst)
-	local main = db_distant_of[pts_dst]
-	db_distant_of[pts_dst] = nil
-	if main then
-		local pts_main = main[1]
-		local t = db_distant[pts_main]
-		if t then
-			t[pts_dst] = nil
-		end
-	end
-	if not force then
-		update_dst(dst)
-	end
-end
-
---- Unassign a main signal.
--- @function unassign_main
--- @param main The position of the main signal.
--- @param[opt=false] force Whether to skip callbacks.
-local function unassign_main(main, force)
-	local pts_main = pts(main)
-	local t = db_distant[pts_main]
-	if not t then
-		return
-	end
-	for pts_dst in pairs(t) do
-		local realmain = db_distant_of[pts_dst]
-		if realmain and realmain[1] == pts_main then
-			db_distant_of[pts_dst] = nil
-			if not force then
-				local dst = stp(pts_dst)
-				update_dst(dst)
-			end
-		end
-	end
-	db_distant[pts_main] = nil
-end
-
---- Remove all (main and distant) signal assignments from a signal.
--- @function unassign_all
--- @param pos The position of the signal.
--- @param[opt=false] force Whether to skip callbacks.
-local function unassign_all(pos, force)
-	unassign_main(pos)
-	unassign_dst(pos, force)
-end
-
---- Check whether a signal is "appropriate" for the distant signal system.
--- Currently, a signal is considered appropriate if its signal aspect can be set.
--- @function appropriate_signal
--- @param pos The position of the signal
-local function appropriate_signal(pos)
-	local node = advtrains.ndb.get_node(pos)
-	local ndef = minetest.registered_nodes[node.name] or {}
-	if not ndef then
-		return false
-	end
-	local atdef = ndef.advtrains
-	if not atdef then
-		return false
-	end
-	return atdef.supported_aspects and atdef.set_aspect and true
-end
-
---- Assign a distant signal to a main signal.
--- @function assign
--- @param main The position of the main signal.
--- @param dst The position of the distant signal.
--- @param[opt="manual"] by The method of assignment.
--- @param[opt=false] skip_update Whether to skip callbacks.
-local function assign(main, dst, by, skip_update)
-	if not (appropriate_signal(main) and appropriate_signal(dst)) then
-		return
-	end
-	local pts_main = pts(main)
-	local pts_dst = pts(dst)
-	local t = db_distant[pts_main]
-	if not t then
-		t = {}
-		db_distant[pts_main] = t
-	end
-	if not by then
-		by = "manual"
-	end
-	unassign_dst(dst, true)
-	t[pts_dst] = by
-	db_distant_of[pts_dst] = {pts_main, by}
-	if not skip_update then
-		update_dst(dst)
-	end
-end
-
---- Get the distant signals assigned to a main signal.
--- @function get_distant
--- @param main The position of the main signal.
--- @treturn {[pos]=by,...} A table of distant signals, with the positions encoded using `advtrains.encode_pos`.
-local function get_distant(main)
-	local pts_main = pts(main)
-	return db_distant[pts_main] or {}
-end
-
---- Get the main signal assigned the a distant signal.
--- @function get_main
--- @param dst The position of the distant signal.
--- @return The position of the main signal.
--- @return The method of assignment.
-local function get_main(dst)
-	local pts_dst = pts(dst)
-	local main = db_distant_of[pts_dst]
-	if not main then
-		return
-	end
-	if main[1] then
-		return stp(main[1]), unpack(main, 2)
-	else
-		return unpack(main)
-	end
-end
-
---- Update all distant signals assigned to a main signal.
--- @function update_main
--- @param main The position of the main signal.
-update_main = function(main)
-	local pts_main = pts(main)
-	local t = get_distant(main)
-	for pts_dst in pairs(t) do
-		local dst = stp(pts_dst)
-		advtrains.interlocking.signal_readjust_aspect(dst)
-	end
-end
-
---- Update the aspect of a distant signal.
--- @function update_dst
--- @param dst The position of the distant signal.
-update_dst = function(dst)
-	advtrains.interlocking.signal_readjust_aspect(dst)
-end
-
---- Update the aspect of a combined (main and distant) signal and all distant signals assigned to it.
--- @function update_signal
--- @param pos The position of the signal.
-update_signal = function(pos)
-	update_main(pos)
-	update_dst(pos)
-end
-
-advtrains.distant = {
-	load = db_load,
-	save = db_save,
-	assign = assign,
-	unassign_dst = unassign_dst,
-	unassign_main = unassign_main,
-	unassign_all = unassign_all,
-	get_distant = get_distant,
-	get_dst = get_distant,
-	get_main = get_main,
-	update_main = update_main,
-	update_dst = update_dst,
-	update_signal = update_signal,
-	appropriate_signal = appropriate_signal,
-}
diff --git a/advtrains_interlocking/init.lua b/advtrains_interlocking/init.lua
index dd08b4a..c397aa6 100644
--- a/advtrains_interlocking/init.lua
+++ b/advtrains_interlocking/init.lua
@@ -15,9 +15,6 @@ local modpath = minetest.get_modpath(minetest.get_current_modname()) .. DIR_DELI
 --advtrains.interlocking.aspect = dofile(modpath.."aspect.lua")
 
 dofile(modpath.."database.lua")
-dofile(modpath.."distant.lua")
-dofile(modpath.."distant_ui.lua")
-dofile(modpath.."signal_aspect_accessors.lua")
 dofile(modpath.."signal_api.lua")
 dofile(modpath.."signal_aspect_ui.lua")
 dofile(modpath.."demosignals.lua")
diff --git a/advtrains_interlocking/route_ui.lua b/advtrains_interlocking/route_ui.lua
index a1a331d..982c579 100644
--- a/advtrains_interlocking/route_ui.lua
+++ b/advtrains_interlocking/route_ui.lua
@@ -33,7 +33,7 @@ function atil.show_route_edit_form(pname, sigd, routeid)
 	local function itab(t)
 		tab[#tab+1] = minetest.formspec_escape(string.gsub(t, ",", " "))
 	end
-	itab("TCB "..sigd_to_string(sigd).." ("..(tcbs.signal_name or "")..") Route #"..routeid)
+	itab("("..(tcbs.signal_name or "+")..") Route #"..routeid)
 	
 	-- this code is partially copy-pasted from routesetting.lua
 	-- we start at the tc designated by signal
@@ -56,13 +56,14 @@ function atil.show_route_edit_form(pname, sigd, routeid)
 		c_rseg = route[i]
 		c_lckp = {}
 		
-		itab(""..i.." Entry "..sigd_to_string(c_sigd).." -> Sec. "..(c_ts and c_ts.name or "-").." -> Exit "..(c_rseg.next and sigd_to_string(c_rseg.next) or "END"))
+		itab(""..i.." "..sigd_to_string(c_sigd))
+		itab("= "..(c_ts and c_ts.name or "-").." =")
 		
 		if c_rseg.locks then
 			for pts, state in pairs(c_rseg.locks) do
 				
 				local pos = minetest.string_to_pos(pts)
-				itab("  Lock: "..pts.." -> "..state)
+				itab("L "..pts.." -> "..state)
 				if not advtrains.is_passive(pos) then
 					itab("-!- No passive component at "..pts..". Please reconfigure route!")
 					break
@@ -75,16 +76,17 @@ function atil.show_route_edit_form(pname, sigd, routeid)
 	end
 	if c_sigd then
 		local e_tcbs = ildb.get_tcbs(c_sigd)
-		itab("Route end: "..sigd_to_string(c_sigd).." ("..(e_tcbs and e_tcbs.signal_name or "-")..")")
+		local signame = "-"
+		if e_tcbs and e_tcbs.signal then signame = e_tcbs.signal_name or "+" end
+		itab("E "..sigd_to_string(c_sigd).." ("..signame..")")
 	else
-		itab("Route ends on dead-end")
+		itab("E (none)")
 	end
 	
-	form = form.."textlist[0.5,2;7.75,3.9;rtelog;"..table.concat(tab, ",").."]"
+	form = form.."textlist[0.5,2;3,3.9;rtelog;"..table.concat(tab, ",").."]"
 	
 	form = form.."button[0.5,6;3,1;back;<<< Back to signal]"
-	form = form.."button[4.5,6;2,1;aspect;Signal Aspect]"
-	form = form.."button[6.5,6;2,1;delete;Delete Route]"
+	form = form.."button[5.5,6;3,1;delete;Delete Route]"
 	
 	--atdebug(route.ars)
 	form = form.."style[ars;font=mono]"
diff --git a/advtrains_interlocking/routesetting.lua b/advtrains_interlocking/routesetting.lua
index 24b3199..a576139 100644
--- a/advtrains_interlocking/routesetting.lua
+++ b/advtrains_interlocking/routesetting.lua
@@ -138,7 +138,7 @@ function ilrs.set_route(signal, route, try)
 			}
 			if c_tcbs.signal then
 				c_tcbs.route_committed = true
-				c_tcbs.aspect = route.aspect or advtrains.interlocking.FULL_FREE
+				c_tcbs.aspect = advtrains.interlocking.signal.MASP_FREE
 				c_tcbs.route_origin = signal
 				signals[#signals+1] = c_tcbs
 			end
@@ -166,7 +166,7 @@ function ilrs.set_route(signal, route, try)
 			if (not nodst) and (not assigned_by or assigned_by == "routesetting") then
 				advtrains.distant.assign(lastsig, pos, "routesetting", true)
 			end
-			advtrains.interlocking.update_signal_aspect(tcbs, i ~= 1)
+			advtrains.interlocking.signal.update_route_aspect(tcbs, i ~= 1)
 		end
 	end
 	
@@ -278,14 +278,7 @@ function ilrs.cancel_route_from(sigd)
 		c_tcbs.route_auto = nil
 		c_tcbs.route_origin = nil
 		
-		if c_tcbs.signal then
-			local pos = c_tcbs.signal
-			local _, assigned_by = advtrains.distant.get_main(pos)
-			if assigned_by == "routesetting" then
-				advtrains.distant.unassign_dst(pos, true)
-			end
-		end
-		advtrains.interlocking.update_signal_aspect(c_tcbs)
+		advtrains.interlocking.signal.update_route_aspect(c_tcbs)
 		
 		c_ts_id = c_tcbs.ts_id
 		if not c_tcbs then
@@ -370,7 +363,7 @@ function ilrs.update_route(sigd, tcbs, newrte, cancel)
 	end
 	if has_changed_aspect then
 		-- FIX: prevent an minetest.after() loop caused by update_signal_aspect dispatching path invalidation, which in turn calls ARS again
-		advtrains.interlocking.update_signal_aspect(tcbs)
+		advtrains.interlocking.signal.update_route_aspect(tcbs)
 	end
 	advtrains.interlocking.update_player_forms(sigd)
 end
diff --git a/advtrains_interlocking/signal_api.lua b/advtrains_interlocking/signal_api.lua
index d27a045..5216594 100644
--- a/advtrains_interlocking/signal_api.lua
+++ b/advtrains_interlocking/signal_api.lua
@@ -5,9 +5,15 @@ local F = advtrains.formspec
 local signal = {}
 
 signal.MASP_HALT = {
-	name = "halt",
-	description = "HALT",
-	halt = true,
+	name = nil,
+	speed = nil,
+	remote = nil,
+}
+
+signal.MASP_FREE = {
+	name = "_free",
+	speed = -1,
+	remote = nil,
 }
 
 signal.ASPI_HALT = {
@@ -50,11 +56,12 @@ Note that once apply_aspect returns, there is no need for advtrains anymore to q
 When the signal, for any reason, wants to change its aspect by itself *without* going through the signal API then
 it should update the aspect info cache by calling advtrains.interlocking.signal.update_aspect_info(pos)
 
-Note that the apply_aspect function MUST accept the following main aspect, even if it is not defined in the main_aspects table:
-{ name = "halt", halt = true }
-It should cause the signal to show its most restrictive aspect. Typically it is a halt aspect, but e.g. for distant-only
+Apply_aspect may also receive nil as the main aspect. It usually means that the signal is not assigned to anything particular,
+and it should cause the signal to show its most restrictive aspect. Typically it is a halt aspect, but e.g. for distant-only
 signals this would be "expect stop".
 
+Main aspect names starting with underscore (e.g. "_default") are reserved and must not be used!
+
 == Aspect Info ==
 The actual signal aspect in the already-known format. This is what the trains use to determine halt/proceed and speed.
 asp = {
@@ -152,7 +159,7 @@ end
 -- - Storing the main aspect and dst pos for this signal permanently (until next change)
 -- - Assigning the distant signal for this signal
 -- - Calling apply_aspect() in the signal's node definition to make the signal show the aspect
--- - Calling apply_aspect() again whenever the distant signal changes its aspect
+-- - Calling apply_aspect() again whenever the remote signal changes its aspect
 -- - Notifying this signal's distant signals about changes to this signal (unless skip_dst_notify is specified)
 function signal.set_aspect(pos, main_asp_name, main_asp_speed, rem_pos, skip_dst_notify)
 	local main_pts = advtrains.encode_pos(pos)
@@ -252,10 +259,7 @@ function signal.get_aspect(pos)
 end
 
 local function cache_mainaspects(ndefat)
-	ndefat.main_aspects_lookup = {
-		-- always define halt aspect
-		halt = signal.MASP_HALT
-	}
+	ndefat.main_aspects_lookup = {}
 	for _,ma in ipairs(ndefat.main_aspects) do
 		ndefat.main_aspects_lookup[ma.name] = ma
 	end
@@ -264,7 +268,7 @@ end
 function signal.get_aspect_internal(pos, aspt)
 	if not aspt then
 		-- oh, no main aspect, nevermind
-		return nil, aspt.remote, nil
+		return nil, nil, nil
 	end
 	atdebug("get_aspect_internal",pos,aspt)
 	-- look aspect in nodedef
@@ -277,6 +281,10 @@ function signal.get_aspect_internal(pos, aspt)
 			cache_mainaspects(ndefat)
 		end
 		local masp = ndefat.main_aspects_lookup[aspt.name]
+		-- special handling for the default free aspect ("_free")
+		if aspt.name == "_free" then
+			masp = ndefat.main_aspects[1]
+		end
 		if not masp then
 			atwarn(pos,"invalid main aspect",aspt.name,"valid are",ndefat.main_aspects_lookup)
 			return nil, aspt.remote, node, ndef
@@ -355,10 +363,30 @@ end
 function signal.update_route_aspect(tcbs, skip_dst_notify)
 	if tcbs.signal then
 		local asp = tcbs.aspect or signal.MASP_HALT
-		signal.set_aspect(tcbs.signal, asp, skip_dst_notify)
+		signal.set_aspect(tcbs.signal, asp.name, asp.speed, asp.remote, skip_dst_notify)
 	end
 end
 
+-- Returns how capable the signal is with regards to aspect setting
+-- 0: not a signal at all
+-- 1: signal has get_aspect_info() but the aspect is not variable (e.g. a sign)
+-- 2: signal has apply_aspect() but does not have main aspects (e.g. a pure distant signal)
+-- 3: Full capabilities, signal has main aspects and can be used as main/shunt signal (can be start/endpoint of a route)
+function signal.get_signal_cap_level(pos)
+	local node = advtrains.ndb.get_node_or_nil(pos)
+	local ndef = node and minetest.registered_nodes[node.name]
+	local ndefat = ndef and ndef.advtrains
+	if ndefat and ndefat.get_aspect_info then
+		if ndefat.apply_aspect  then
+			if ndefat.main_aspects then
+				return 3
+			end
+			return 2
+		end
+		return 1
+	end
+	return 0
+end
 
 ----------------
 
@@ -366,7 +394,7 @@ function signal.can_dig(pos)
 	return not advtrains.interlocking.db.get_sigd_for_signal(pos)
 end
 
-function advtrains.interlocking.signal_after_dig(pos)
+function signal.after_dig(pos)
 	-- TODO clear influence point
 	advtrains.interlocking.signal.clear_aspect(pos)
 end
@@ -374,169 +402,7 @@ end
 function signal.on_rightclick(pos, node, player, itemstack, pointed_thing)
 	local pname = player:get_player_name()
 	local control = player:get_player_control()
-	if control.aux1 then
-		advtrains.interlocking.show_ip_form(pos, pname)
-		return
-	end
-	advtrains.interlocking.show_signal_form(pos, node, pname)
-end
-
-function advtrains.interlocking.show_signal_form(pos, node, pname)
-	local sigd = advtrains.interlocking.db.get_sigd_for_signal(pos)
-	if sigd then
-		advtrains.interlocking.show_signalling_form(sigd, pname)
-	else
-		local ndef = minetest.registered_nodes[node.name]
-		if ndef.advtrains and ndef.advtrains.set_aspect then
-			-- permit to set aspect manually
-			local function callback(pname, aspect)
-				signal.set_aspect(pos, aspect)
-			end
-			local isasp = advtrains.interlocking.signal_get_aspect(pos, node)
-
-			advtrains.interlocking.show_signal_aspect_selector(
-				pname,
-				ndef.advtrains.supported_aspects,
-				pos, callback,
-				isasp)
-		else
-			--static signal - only IP
-			advtrains.interlocking.show_ip_form(pos, pname)
-		end
-	end
-end
-
-local players_assign_ip = {}
-
-local function ipmarker(ipos, connid)
-	local node_ok, conns, rhe = advtrains.get_rail_info_at(ipos, advtrains.all_tracktypes)
-	if not node_ok then return end
-	local yaw = advtrains.dir_to_angle(conns[connid].c)
-
-	-- using tcbmarker here
-	local obj = minetest.add_entity(vector.add(ipos, {x=0, y=0.2, z=0}), "advtrains_interlocking:tcbmarker")
-	if not obj then return end
-	obj:set_yaw(yaw)
-	obj:set_properties({
-		textures = { "at_il_signal_ip.png" },
-	})
-end
-
-function advtrains.interlocking.make_ip_formspec_component(pos, x, y, w)
-	advtrains.interlocking.db.check_for_duplicate_ip(pos)
-	local pts, connid = advtrains.interlocking.db.get_ip_by_signalpos(pos)
-	if pts then
-		return table.concat {
-			F.S_label(x, y, "Influence point is set at @1.", string.format("%s/%s", pts, connid)),
-			F.S_button_exit(x, y+0.5, w/2-0.125, "ip_set", "Modify"),
-			F.S_button_exit(x+w/2+0.125, y+0.5, w/2-0.125, "ip_clear", "Clear"),
-		}, pts, connid
-	else
-		return table.concat {
-			F.S_label(x, y, "Influence point is not set."),
-			F.S_button_exit(x, y+0.5, w, "ip_set", "Set influence point"),
-		}
-	end
-end
-
--- shows small info form for signal properties
--- This function is named show_ip_form because it was originally only intended
--- for assigning/changing the influence point.
--- only_notset: show only if it is not set yet (used by signal tcb assignment)
-function advtrains.interlocking.show_ip_form(pos, pname, only_notset)
-	if not minetest.check_player_privs(pname, "interlocking") then
-		return
-	end
-	local ipform, pts, connid = advtrains.interlocking.make_ip_formspec_component(pos, 0.5, 0.5, 7)
-	local form = {
-		"formspec_version[4]",
-		"size[8,2.25]",
-		ipform,
-	}
-	if pts then
-		local ipos = minetest.string_to_pos(pts)
-		ipmarker(ipos, connid)
-	end
-	if advtrains.distant.appropriate_signal(pos) then
-		form[#form+1] = advtrains.interlocking.make_dst_formspec_component(pos, 0.5, 2, 7, 4.25)
-		form[2] = "size[8,6.75]"
-	end
-	form = table.concat(form)
-	if not only_notset or not pts then
-		minetest.show_formspec(pname, "at_il_propassign_"..minetest.pos_to_string(pos), form)
-	end
+	advtrains.interlocking.show_signal_form(pos, node, pname, control.aux1)
 end
 
-function advtrains.interlocking.handle_ip_formspec_fields(pname, pos, fields)
-	if not (pos and minetest.check_player_privs(pname, {train_operator=true, interlocking=true})) then
-		return
-	end
-	if fields.ip_set then
-		advtrains.interlocking.signal_init_ip_assign(pos, pname)
-	elseif fields.ip_clear then
-		advtrains.interlocking.db.clear_ip_by_signalpos(pos)
-	end
-end
-
-minetest.register_on_player_receive_fields(function(player, formname, fields)
-	local pname = player:get_player_name()
-	local pts = string.match(formname, "^at_il_propassign_([^_]+)$")
-	local pos
-	if pts then
-		pos = minetest.string_to_pos(pts)
-	end
-	if pos then
-		advtrains.interlocking.handle_ip_formspec_fields(pname, pos, fields)
-		advtrains.interlocking.handle_dst_formspec_fields(pname, pos, fields)
-	end
-end)
-
--- inits the signal IP assignment process
-function signal.init_ip_assign(pos, pname)
-	if not minetest.check_player_privs(pname, "interlocking") then
-		minetest.chat_send_player(pname, "Insufficient privileges to use this!")
-		return
-	end
-	--remove old IP
-	--advtrains.interlocking.db.clear_ip_by_signalpos(pos)
-	minetest.chat_send_player(pname, "Configuring Signal: Please look in train's driving direction and punch rail to set influence point.")
-	
-	players_assign_ip[pname] = pos
-end
-
-minetest.register_on_punchnode(function(pos, node, player, pointed_thing)
-	local pname = player:get_player_name()
-	if not minetest.check_player_privs(pname, "interlocking") then
-		return
-	end
-	-- IP assignment
-	local signalpos = players_assign_ip[pname]
-	if signalpos then
-		if vector.distance(pos, signalpos)<=50 then
-			local node_ok, conns, rhe = advtrains.get_rail_info_at(pos, advtrains.all_tracktypes)
-			if node_ok and #conns == 2 then
-				
-				local yaw = player:get_look_horizontal()
-				local plconnid = advtrains.yawToClosestConn(yaw, conns)
-				
-				-- add assignment if not already present.
-				local pts = advtrains.roundfloorpts(pos)
-				if not advtrains.interlocking.db.get_ip_signal_asp(pts, plconnid) then
-					advtrains.interlocking.db.set_ip_signal(pts, plconnid, signalpos)
-					ipmarker(pos, plconnid)
-					minetest.chat_send_player(pname, "Configuring Signal: Successfully set influence point")
-				else
-					minetest.chat_send_player(pname, "Configuring Signal: Influence point of another signal is already present!")
-				end
-			else
-				minetest.chat_send_player(pname, "Configuring Signal: This is not a normal two-connection rail! Aborted.")
-			end
-		else
-			minetest.chat_send_player(pname, "Configuring Signal: Node is too far away. Aborted.")
-		end
-		players_assign_ip[pname] = nil
-	end
-end)
-
-
 advtrains.interlocking.signal = signal
diff --git a/advtrains_interlocking/signal_aspect_accessors.lua b/advtrains_interlocking/signal_aspect_accessors.lua
deleted file mode 100644
index d91df31..0000000
--- a/advtrains_interlocking/signal_aspect_accessors.lua
+++ /dev/null
@@ -1,163 +0,0 @@
---- Signal aspect accessors
--- @module advtrains.interlocking
-
-local A = advtrains.interlocking.aspect
-local D = advtrains.distant
-local I = advtrains.interlocking
-local N = advtrains.ndb
-local pts = advtrains.roundfloorpts
-
-local get_aspect
-
-local supposed_aspects = {}
-
---- Replace the signal aspect cache.
--- @function load_supposed_aspects
--- @param db The new database.
-function I.load_supposed_aspects(tbl)
-	if tbl then
-		supposed_aspects = {}
-		for k, v in pairs(tbl) do
-			supposed_aspects[k] = A(v)
-		end
-	end
-end
-
---- Retrieve the signal aspect cache.
--- @function save_supposed_aspects
--- @return The current database in use.
-function I.save_supposed_aspects()
-	local t = {}
-	for k, v in pairs(supposed_aspects) do
-		t[k] = v:plain(true)
-	end
-	return t
-end
-
---- Read the aspect of a signal strictly from cache.
--- @param pos The position of the signal.
--- @return[1] The aspect of the signal (if present in cache).
--- @return[2] The nil constant (otherwise).
-local function get_supposed_aspect(pos)
-	return supposed_aspects[pts(pos)]
-end
-
---- Update the signal aspect information in cache.
--- @param pos The position of the signal.
--- @param asp The new signal aspect
-local function set_supposed_aspect(pos, asp)
-	supposed_aspects[pts(pos)] = asp
-end
-
---- Get the definition of a node.
--- @param pos The position of the node.
--- @return[1] The definition of the node (if present).
--- @return[2] An empty table (otherwise).
-local function get_ndef(pos)
-	local node = N.get_node(pos)
-	return (minetest.registered_nodes[node.name] or {}), node
-end
-
---- Get the aspects supported by a signal.
--- @function signal_get_supported_aspects
--- @param pos The position of the signal.
--- @return[1] The table of supported aspects (if present).
--- @return[2] The nil constant (otherwise).
-local function get_supported_aspects(pos)
-	local ndef = get_ndef(pos)
-	if ndef.advtrains and ndef.advtrains.supported_aspects then
-		return ndef.advtrains.supported_aspects
-	end
-	return nil
-end
-
---- Adjust a new signal aspect to fit a signal.
--- @param pos The position of the signal.
--- @param asp The new signal aspect.
--- @return The adjusted signal aspect.
--- @return The information to pass to the `advtrains.set_aspect` field in the node definitions.
-local function adjust_aspect(pos, asp)
-	local asp = A(asp)
-
-	local mainpos = D.get_main(pos)
-	local nxtasp
-	if mainpos then
-		nxtasp = get_aspect(mainpos)
-	end
-	local suppasp = get_supported_aspects(pos)
-	if not suppasp then
-		return asp
-	end
-	return asp:adjust_distant(nxtasp, suppasp.dst_shift):to_group(suppasp.group)
-end
-
---- Get the aspect of a signal without accessing the cache.
--- For most cases, `get_aspect` should be used instead.
--- @function signal_get_real_aspect
--- @param pos The position of the signal.
--- @return[1] The signal aspect adjusted using `adjust_aspect` (if present).
--- @return[2] The nil constant (otherwise).
-local function get_real_aspect(pos)
-	local ndef, node = get_ndef(pos)
-	if ndef.advtrains and ndef.advtrains.get_aspect then
-		local asp = ndef.advtrains.get_aspect(pos, node) or I.DANGER
-		return adjust_aspect(pos, asp)
-	end
-	return nil
-end
-
---- Get the aspect of a signal.
--- @function signal_get_aspect
--- @param pos The position of the signal.
--- @return[1] The aspect of the signal (if present).
--- @return[2] The nil constant (otherwise).
-get_aspect = function(pos)
-	local asp = get_supposed_aspect(pos)
-	if not asp then
-		asp = get_real_aspect(pos)
-		set_supposed_aspect(pos, asp)
-	end
-	return asp
-end
-
---- Set the aspect of a signal.
--- @function signal_set_aspect
--- @param pos The position of the signal.
--- @param asp The new signal aspect.
--- @param[opt=false] skipdst Whether to skip updating distant signals.
-local function set_aspect(pos, asp, skipdst)
-	local node = N.get_node(pos)
-	local ndef = minetest.registered_nodes[node.name]
-	if ndef and ndef.advtrains and ndef.advtrains.set_aspect then
-		local oldasp = I.signal_get_aspect(pos) or DANGER
-		local newasp = adjust_aspect(pos, asp)
-		set_supposed_aspect(pos, newasp)
-		ndef.advtrains.set_aspect(pos, node, newasp)
-		I.signal_on_aspect_changed(pos)
-		local aspect_changed = oldasp ~= newasp
-		if (not skipdst) and aspect_changed then
-			D.update_main(pos)
-		end
-	end
-end
-
---- Remove a signal from cache.
--- @function signal_clear_aspect
--- @param pos The position of the signal.
-local function clear_aspect(pos)
-	set_supposed_aspect(pos, nil)
-end
-
---- Readjust the aspect of a signal.
--- @function signal_readjust_aspect
--- @param pos The position of the signal.
-local function readjust_aspect(pos)
-	set_aspect(pos, get_aspect(pos))
-end
-
-I.signal_get_supported_aspects = get_supported_aspects
-I.signal_get_real_aspect = get_real_aspect
-I.signal_get_aspect = get_aspect
-I.signal_set_aspect = set_aspect
-I.signal_clear_aspect = clear_aspect
-I.signal_readjust_aspect = readjust_aspect
diff --git a/advtrains_interlocking/signal_aspect_ui.lua b/advtrains_interlocking/signal_aspect_ui.lua
index a81b7fe..e5d2003 100644
--- a/advtrains_interlocking/signal_aspect_ui.lua
+++ b/advtrains_interlocking/signal_aspect_ui.lua
@@ -1,262 +1,188 @@
 local F = advtrains.formspec
-local players_aspsel = {}
 
-local function describe_main_aspect(spv)
-	if spv == 0 then
-		return attrans("Danger (halt)")
-	elseif spv == -1 then
-		return attrans("Continue at maximum speed")
-	elseif not spv then
-		return attrans("Continue with current speed limit")
+function advtrains.interlocking.show_signal_form(pos, node, pname, aux_key)
+	local sigd = advtrains.interlocking.db.get_sigd_for_signal(pos)
+	if sigd and not aux_key then
+		advtrains.interlocking.show_signalling_form(sigd, pname)
 	else
-		return attrans("Continue with the speed limit of @1", tostring(spv))
-	end
-end
-
-local function describe_shunt_aspect(shunt)
-	if shunt then
-		return attrans("Shunting allowed")
-	else
-		return attrans("No shunting")
+		if advtrains.interlocking.signal.get_signal_cap_level(pos) >= 2 then
+			advtrains.interlocking.show_ip_sa_form(pos, pname)
+		else
+			advtrains.interlocking.show_ip_form(pos, pname)
+		end
 	end
 end
 
-local function describe_distant_aspect(spv)
-	if spv == 0 then
-		return attrans("Expect to stop at the next signal")
-	elseif spv == -1 then
-		return attrans("Expect to continue at maximum speed")
-	elseif not spv then
-		return attrans("No distant signal information")
-	else
-		return attrans("Expect to continue with a speed limit of @1", tostring(spv))
-	end
+local players_assign_ip = {}
+local players_assign_distant = {}
+
+local function ipmarker(ipos, connid)
+	local node_ok, conns, rhe = advtrains.get_rail_info_at(ipos, advtrains.all_tracktypes)
+	if not node_ok then return end
+	local yaw = advtrains.dir_to_angle(conns[connid].c)
+
+	-- using tcbmarker here
+	local obj = minetest.add_entity(vector.add(ipos, {x=0, y=0.2, z=0}), "advtrains_interlocking:tcbmarker")
+	if not obj then return end
+	obj:set_yaw(yaw)
+	obj:set_properties({
+		textures = { "at_il_signal_ip.png" },
+	})
 end
 
-advtrains.interlocking.describe_main_aspect = describe_main_aspect
-advtrains.interlocking.describe_shunt_aspect = describe_shunt_aspect
-advtrains.interlocking.describe_distant_aspect = describe_distant_aspect
-
-local function dsel(p, q, x, y)
-	if p == nil then
-		if q then
-			return x
-		else
-			return y
-		end
-	elseif p then
-		return x
+function advtrains.interlocking.make_ip_formspec_component(pos, x, y, w)
+	advtrains.interlocking.db.check_for_duplicate_ip(pos)
+	local pts, connid = advtrains.interlocking.db.get_ip_by_signalpos(pos)
+	if pts then
+		-- display marker
+		local ipos = minetest.string_to_pos(pts)
+		ipmarker(ipos, connid)
+		return table.concat {
+			F.S_label(x, y, "Influence point is set at @1.", string.format("%s/%s", pts, connid)),
+			F.S_button_exit(x, y+0.5, w/2-0.125, "ip_set", "Modify"),
+			F.S_button_exit(x+w/2+0.125, y+0.5, w/2-0.125, "ip_clear", "Clear"),
+		}
 	else
-		return y
+		return table.concat {
+			F.S_label(x, y, "Influence point is not set."),
+			F.S_button_exit(x, y+0.5, w, "ip_set", "Set influence point"),
+		}
 	end
 end
 
-local function describe_supported_aspects(suppasp, isasp)
-	local t = {}
-
-	local entries = {attrans("Use default value")}
-	local selid = 0
-	local mainasps = suppasp.main
-	if type(mainasps) ~= "table" then
-		mainasps = {mainasps}
-	end
-	for idx, spv in ipairs(mainasps) do
-		if isasp and spv == rawget(isasp, "main") then
-			selid = idx
-		end
-		entries[idx+1] = describe_main_aspect(spv)
-	end
-	t.main = entries
-	t.main_current = selid+1
-	t.main_string = tostring(isasp.main)
-	if t.main == nil then
-		t.main_string = ""
+-- shows small formspec to set the signal influence point
+-- only_notset: show only if it is not set yet (used by signal tcb assignment)
+function advtrains.interlocking.show_ip_form(pos, pname, only_notset)
+	if not minetest.check_player_privs(pname, "interlocking") then
+		return
 	end
-
-	t.shunt = {
-		attrans("No shunting"),
-		attrans("Shunting allowed"),
-		attrans("Proceed as main"),
+	local ipform = advtrains.interlocking.make_ip_formspec_component(pos, 0.5, 0.5, 7)
+	local form = {
+		"formspec_version[4]",
+		"size[8,2.25]",
+		ipform,
 	}
-
-	t.shunt_current = dsel(suppasp.shunt, isasp.shunt, 2, 1)
-	if dsel(suppasp.proceed_as_main, isasp.proceed_as_main, t.shunt_current == 1) then
-		t.shunt_current = 3
-	end
-	t.shunt_const = suppasp.shunt ~= nil
-
-	if suppasp.group then
-		local gdef = advtrains.interlocking.aspect.get_group_definition(suppasp.group)
-		if gdef then
-			t.group = suppasp.group
-			t.groupdef = gdef
-			local entries = {}
-			local selid = 1
-			for idx, name in ipairs(suppasp.name or {}) do
-				entries[idx] = gdef.aspects[name].label
-				if suppasp.group == isasp.group and name == isasp.name then
-					selid = idx
-				end
-			end
-			t.name = entries
-			t.name_current = selid
-		end
+	if not only_notset or not pts then
+		minetest.show_formspec(pname, "at_il_ipsaform_"..minetest.pos_to_string(pos), table.concat(form))
 	end
-
-	return t
 end
 
-advtrains.interlocking.describe_supported_aspects = describe_supported_aspects
-
-local function make_signal_aspect_selector(suppasp, purpose, isasp)
-	local t = describe_supported_aspects(suppasp, isasp)
-	local formmode = 1
-
-	local pos
-	if type(purpose) == "table" then
-		formmode = 2
-		pos = purpose.pos
+-- shows larger formspec to set the signal influence point, main aspect and distant signal pos
+-- only_notset: show only if it is not set yet (used by signal tcb assignment)
+function advtrains.interlocking.show_ip_sa_form(pos, pname)
+	if not minetest.check_player_privs(pname, "interlocking") then
+		return
 	end
-
+	local ipform = advtrains.interlocking.make_ip_formspec_component(pos, 0.5, 0.5, 7)
+	local ma, rpos = advtrains.interlocking.signal.get_aspect(pos)
+	local saform = F.S_button_exit(0, 2, 4, "sa_dst_assign", rpos and minetest.pos_to_string(rpos) or "<distant signal>")
+			.. F.S_button_exit(0, 3, 2, "sa_tmp_mainfree", "Main to free") .. F.S_button_exit(2, 3, 2, "sa_tmp_mainhalt", "Main to halt")
 	local form = {
 		"formspec_version[4]",
-		string.format("size[8,%f]", ({5.75, 10.75})[formmode]),
-		F.S_label(0.5, 0.5, "Select signal aspect"),
+		"size[8,4]",
+		ipform,
+		saform,
 	}
-	local h0 = ({0, 1.5})[formmode]
-	form[#form+1] = F.S_label(0.5, 1.5+h0, "Main aspect")
-	form[#form+1] = F.S_label(0.5, 3+h0, "Shunt aspect")
-	form[#form+1] = F.S_button_exit(0.5, 4.5+h0, 7, "asp_save", "Save signal aspect")
-	if formmode == 1 then
-		form[#form+1] = F.label(0.5, 1, purpose)
-		form[#form+1] = F.field(0.5, 2, 7, "asp_mainval", "", t.main_string)
-	elseif formmode == 2 then
-		if t.group then
-			form[#form+1] = F.S_label(0.5, 1.5, "Signal aspect group: @1", t.groupdef.label)
-			form[#form+1] = F.dropdown(0.5, 2, 7, "asp_namesel", t.name, t.name_current, true)
-		else
-			form[#form+1] = F.S_label(0.5, 1.5, "This signal does not belong to a signal aspect group.")
-			form[#form+1] = F.S_label(0.5, 2, "You can not use a predefined signal aspect.")
-		end
-		form[#form+1] = F.S_label(0.5, 1, "Signal at @1", minetest.pos_to_string(pos))
-		form[#form+1] = F.dropdown(0.5, 3.5, 7, "asp_mainsel", t.main, t.main_current, true)
-		form[#form+1] = advtrains.interlocking.make_ip_formspec_component(pos, 0.5, 7, 7)
-		form[#form+1] = advtrains.interlocking.make_short_dst_formspec_component(pos, 0.5, 8.5, 7)
-	end
+	minetest.show_formspec(pname, "at_il_ipsaform_"..minetest.pos_to_string(pos), table.concat(form))
+end
 
-	if formmode == 2 and t.shunt_const then
-		form[#form+1] = F.label(0.5, 3.5+h0, t.shunt[t.shunt_current])
-		form[#form+1] = F.S_label(0.5, 4+h0, "The shunt aspect cannot be changed.")
-	else
-		form[#form+1] = F.dropdown(0.5, 3.5+h0, 7, "asp_shunt", t.shunt, t.shunt_current, true)
+function advtrains.interlocking.handle_ip_sa_formspec_fields(pname, pos, fields)
+	if not (pos and minetest.check_player_privs(pname, {train_operator=true, interlocking=true})) then
+		return
+	end
+	if fields.ip_set then
+		advtrains.interlocking.init_ip_assign(pos, pname)
+	elseif fields.ip_clear then
+		advtrains.interlocking.db.clear_ip_by_signalpos(pos)
+	elseif fields.sa_dst_assign then
+		advtrains.interlocking.init_distant_assign(pos, pname)
+	elseif fields.sa_tmp_mainfree then
+		local ma, rpos = advtrains.interlocking.signal.get_aspect(pos)
+		advtrains.interlocking.signal.set_aspect(pos, "_free", -1, rpos)
+	elseif fields.sa_tmp_mainhalt then
+		local ma, rpos = advtrains.interlocking.signal.get_aspect(pos)
+		advtrains.interlocking.signal.set_aspect(pos, nil, nil, rpos)
 	end
-
-	return table.concat(form)
 end
 
-function advtrains.interlocking.show_signal_aspect_selector(pname, p_suppasp, p_purpose, callback, isasp)
-	local suppasp = p_suppasp or {
-		main = {0, -1},
-		dst = {false},
-		shunt = false,
-		info = {},
-	}
-	local purpose = p_purpose or ""
+minetest.register_on_player_receive_fields(function(player, formname, fields)
+	local pname = player:get_player_name()
+	local pts = string.match(formname, "^at_il_ipsaform_([^_]+)$")
 	local pos
-	if type(p_purpose) == "table" then
-		pos = p_purpose
-		purpose = {pname = pname, pos = pos}
+	if pts then
+		pos = minetest.string_to_pos(pts)
 	end
-
-	local form = make_signal_aspect_selector(suppasp, purpose, isasp)
-	if not form then
-		return
+	if pos then
+		advtrains.interlocking.handle_ip_sa_formspec_fields(pname, pos, fields)
 	end
+end)
 
-	local token = advtrains.random_id()
-	minetest.show_formspec(pname, "at_il_sigaspdia_"..token, form)
-	minetest.after(0, function()
-		players_aspsel[pname] = {
-			purpose = purpose,
-			suppasp = suppasp,
-			callback = callback,
-			token = token,
-		}
-	end)
-end
-
-local function usebool(sup, val, free)
-	if sup == nil then
-		return val == free
-	else
-		return sup
+-- inits the signal IP assignment process
+function advtrains.interlocking.init_ip_assign(pos, pname)
+	if not minetest.check_player_privs(pname, "interlocking") then
+		minetest.chat_send_player(pname, "Insufficient privileges to use this!")
+		return
 	end
+	--remove old IP
+	--advtrains.interlocking.db.clear_ip_by_signalpos(pos)
+	minetest.chat_send_player(pname, "Configuring Signal: Please look in train's driving direction and punch rail to set influence point.")
+	
+	players_assign_ip[pname] = pos
 end
 
-local function get_aspect_from_formspec(suppasp, fields, psl)
-	local namei, group, name = tonumber(fields.asp_namesel), suppasp.group, nil
-	local gdef = advtrains.interlocking.aspect.get_group_definition(group)
-	if gdef then
-		local names = suppasp.name or {}
-		name = names[namei] or names[names]
-	else
-		group = nil
-	end
-	local maini = tonumber(fields.asp_mainsel)
-	local main = (suppasp.main or {})[(maini or 0)-1]
-	if not maini then
-		local mainval = fields.asp_mainval
-		if mainval == "-1" then
-			main = -1
-		elseif mainval == "x" then
-			main = false
-		elseif string.match(mainval, "^%d+$") then
-			main = tonumber(mainval)
-		else
-			main = nil
-		end
-	elseif maini <= 1 then
-		main = nil
-	end
-	local shunti = tonumber(fields.asp_shunt)
-	local shunt = suppasp.shunt
-	if shunt == nil then
-		shunt = shunti == 2
-	end
-	local proceed_as_main = suppasp.proceed_as_main
-	if proceed_as_main == nil then
-		proceed_as_main = shunti == 3
+-- inits the distant signal assignment process
+function advtrains.interlocking.init_distant_assign(pos, pname)
+	if not minetest.check_player_privs(pname, "interlocking") then
+		minetest.chat_send_player(pname, "Insufficient privileges to use this!")
+		return
 	end
-	return advtrains.interlocking.aspect {
-		main = main,
-		shunt = shunt,
-		proceed_as_main = proceed_as_main,
-		info = {},
-		name = name,
-		group = group,
-	}
+	minetest.chat_send_player(pname, "Set distant signal: Punch the main signal to assign!")
+	
+	players_assign_distant[pname] = pos
 end
 
-minetest.register_on_player_receive_fields(function(player, formname, fields)
+minetest.register_on_punchnode(function(pos, node, player, pointed_thing)
 	local pname = player:get_player_name()
-	local psl = players_aspsel[pname]
-	if psl then
-		if formname == "at_il_sigaspdia_"..psl.token then
-			local suppasp = psl.suppasp
-			if fields.asp_save then
-				local asp
-				asp = get_aspect_from_formspec(suppasp, fields, psl)
-				if asp then
-					psl.callback(pname, asp)
+	if not minetest.check_player_privs(pname, "interlocking") then
+		return
+	end
+	-- IP assignment
+	local signalpos = players_assign_ip[pname]
+	if signalpos then
+		if vector.distance(pos, signalpos)<=50 then
+			local node_ok, conns, rhe = advtrains.get_rail_info_at(pos, advtrains.all_tracktypes)
+			if node_ok and #conns == 2 then
+				
+				local yaw = player:get_look_horizontal()
+				local plconnid = advtrains.yawToClosestConn(yaw, conns)
+				
+				-- add assignment if not already present.
+				local pts = advtrains.roundfloorpts(pos)
+				if not advtrains.interlocking.db.get_ip_signal_asp(pts, plconnid) then
+					advtrains.interlocking.db.set_ip_signal(pts, plconnid, signalpos)
+					ipmarker(pos, plconnid)
+					minetest.chat_send_player(pname, "Configuring Signal: Successfully set influence point")
+				else
+					minetest.chat_send_player(pname, "Configuring Signal: Influence point of another signal is already present!")
 				end
-			end
-			if type(psl.purpose) == "table" then
-				local pos = psl.purpose.pos
-				advtrains.interlocking.handle_ip_formspec_fields(pname, pos, fields)
-				advtrains.interlocking.handle_dst_formspec_fields(pname, pos, fields)
+			else
+				minetest.chat_send_player(pname, "Configuring Signal: This is not a normal two-connection rail! Aborted.")
 			end
 		else
-			players_aspsel[pname] = nil
+			minetest.chat_send_player(pname, "Configuring Signal: Node is too far away. Aborted.")
 		end
+		players_assign_ip[pname] = nil
+	end
+	-- DST assignment
+	signalpos = players_assign_distant[pname]
+	if signalpos then
+		-- get current mainaspect
+		local ma, rpos = advtrains.interlocking.signal.get_aspect(signalpos)
+		-- if punched pos is valid signal then set it as the new remote, otherwise nil
+		local nrpos
+		if advtrains.interlocking.signal.get_signal_cap_level(pos) > 1 then nrpos = pos end
+		advtrains.interlocking.signal.set_aspect(signalpos, ma.name, ma.speed, nrpos)
+		players_assign_distant[pname] = nil
 	end
 end)
+
diff --git a/advtrains_interlocking/tcb_ts_ui.lua b/advtrains_interlocking/tcb_ts_ui.lua
index bfec648..caf22e3 100755
--- a/advtrains_interlocking/tcb_ts_ui.lua
+++ b/advtrains_interlocking/tcb_ts_ui.lua
@@ -186,7 +186,7 @@ minetest.register_on_punchnode(function(pos, node, player, pointed_thing)
 			local is_signal = minetest.get_item_group(node.name, "advtrains_signal") >= 2
 			if is_signal then
 				local ndef = minetest.registered_nodes[node.name]
-				if ndef and ndef.advtrains and ndef.advtrains.set_aspect then
+				if ndef and ndef.advtrains and ndef.advtrains.apply_aspect then
 					local tcbs = ildb.get_tcbs(sigd)
 					if tcbs then
 						tcbs.signal = pos
@@ -464,7 +464,7 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 		ts.route = nil
 		for _, sigd in ipairs(ts.tc_breaks) do
 			local tcbs = ildb.get_tcbs(sigd)
-			advtrains.interlocking.update_signal_aspect(tcbs)
+			advtrains.interlocking.signal.update_route_aspect(tcbs)
 		end
 		minetest.chat_send_player(pname, "Reset track section "..ts_id.."!")
 	end
@@ -642,7 +642,6 @@ function advtrains.interlocking.show_signalling_form(sigd, pname, sel_rte, calle
 				form = form.."button[0.5,8;2.5,1;newroute;New Route]"
 				form = form.."button[  3,8;2.5,1;unassign;Unassign Signal]"
 				form = form..string.format("checkbox[0.5,8.75;ars;Automatic routesetting;%s]", not tcbs.ars_disabled)
-				form = form..string.format("checkbox[0.5,9.25;dst;Distant signalling;%s]", not tcbs.nodst)
 			end
 		elseif sigd_equal(tcbs.route_origin, sigd) then
 			-- something has gone wrong: tcbs.routeset should have been set...
@@ -660,7 +659,7 @@ function advtrains.interlocking.show_signalling_form(sigd, pname, sel_rte, calle
 	-- always a good idea to update the signal aspect
 	if not called_from_form_update then
 	-- FIX prevent a callback loop
-		advtrains.interlocking.update_signal_aspect(tcbs)
+		advtrains.interlocking.signal.update_route_aspect(tcbs)
 	end
 end
 
@@ -769,10 +768,6 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 		if fields.ars then
 			tcbs.ars_disabled = not minetest.is_yes(fields.ars)
 		end
-
-		if fields.dst then
-			tcbs.nodst = not minetest.is_yes(fields.dst)
-		end
 		
 		if fields.auto then
 			tcbs.route_auto = true
diff --git a/advtrains_signals_japan/init.lua b/advtrains_signals_japan/init.lua
index eb39f85..d7cf035 100644
--- a/advtrains_signals_japan/init.lua
+++ b/advtrains_signals_japan/init.lua
@@ -374,10 +374,6 @@ for sigtype, sigdata in pairs {
 	--sigdefs["rpt_"..sigtype] = process_signal(sigtype, sigdata, true)
 end
 
-for k in pairs(sigdefs) do
-	advtrains.trackplacer.register_tracktype("advtrains_signals_japan:"..k)
-end
-
 for _, rtab in ipairs {
 	{rot = "0", ici = true},
 	{rot = "30"},
@@ -455,7 +451,7 @@ for _, rtab in ipairs {
 				can_dig = advtrains.interlocking.signal_can_dig,
 				after_dig_node = advtrains.interlocking.signal_after_dig,
 			})
-			advtrains.trackplacer.add_worked("advtrains_signals_japan:"..sigtype, asp, "_"..rot)
+			--advtrains.trackplacer.add_worked("advtrains_signals_japan:"..sigtype, asp, "_"..rot)
 		end
 	end
 end
diff --git a/advtrains_signals_ks/init.lua b/advtrains_signals_ks/init.lua
index 67e0fec..abfb194 100755
--- a/advtrains_signals_ks/init.lua
+++ b/advtrains_signals_ks/init.lua
@@ -50,15 +50,18 @@ end
 
 local applyaspectf_main = function(rot)
  return function(pos, node, main_aspect, dst_aspect, dst_aspect_info)
+	if not main_aspect then
+		-- halt aspect, set red and don't do anything further
+		advtrains.ndb.swap_node(pos, {name="advtrains_signals_ks:hs_danger_"..rot, param2 = node.param2})
+		setzs3v(pos, nil, rot)
+		return
+	end
 	-- set zs3 signal to show speed according to main_aspect
 	setzs3(pos, main_aspect.zs3, rot)
 	-- select appropriate lamps based on mainaspect and dst
 	if main_aspect.shunt then
 		advtrains.ndb.swap_node(pos, {name="advtrains_signals_ks:hs_shunt_"..rot, param2 = node.param2})
 		setzs3v(pos, nil, rot)
-	elseif main_aspect.halt then
-		advtrains.ndb.swap_node(pos, {name="advtrains_signals_ks:hs_danger_"..rot, param2 = node.param2})
-		setzs3v(pos, nil, rot)
 	else
 		if not dst_aspect_info
 				or not dst_aspect_info.main
@@ -128,7 +131,8 @@ local mainaspects_main = {
 local applyaspectf_ra = function(rot)
  -- we get here the full main_aspect table
  return function(pos, node, main_aspect, dst_aspect, dst_aspect_info)
-	if main_aspect.shunt then
+	if main_aspect then
+		-- any main aspect is fine, there's only one anyway
 		advtrains.ndb.swap_node(pos, {name="advtrains_signals_ks:ra_shuntd_"..rot, param2 = node.param2})
 	else
 		advtrains.ndb.swap_node(pos, {name="advtrains_signals_ks:ra_danger_"..rot, param2 = node.param2})
@@ -144,11 +148,6 @@ local mainaspects_shunt = {
 		description = "Shunt",
 		shunt = true,
 	},
-	{
-		name = "halt",
-		description = "Halt",
-		halt = true,
-	},
 }
 
 for _, rtab in ipairs({
@@ -225,9 +224,9 @@ for _, rtab in ipairs({
 				apply_aspect = applyaspectf_main(rot),
 				get_aspect_info = afunc,
 			},
-			on_rightclick = advtrains.interlocking.signal_rc_handler,
-			can_dig = advtrains.interlocking.signal_can_dig,
-			after_dig_node = advtrains.interlocking.signal_after_dig,
+			on_rightclick = advtrains.interlocking.signal.on_rightclick,
+			can_dig = advtrains.interlocking.signal.can_dig,
+			after_dig_node = advtrains.interlocking.signal.after_dig,
 		})
 		-- rotatable by trackworker
 		--TODO add rotation using trackworker
-- 
cgit v1.2.3


From 9af6e32e644cfa53641e83d7550c0af2d31553fd Mon Sep 17 00:00:00 2001
From: orwell <orwell@bleipb.de>
Date: Thu, 23 May 2024 20:25:35 +0200
Subject: Add proper UI aspect selection for static dialog

---
 advtrains/nodedb.lua                        |  4 ++
 advtrains_interlocking/routesetting.lua     | 11 +----
 advtrains_interlocking/signal_api.lua       | 70 +++++++++++++++------------
 advtrains_interlocking/signal_aspect_ui.lua | 75 ++++++++++++++++++++++++-----
 advtrains_signals_ks/init.lua               | 12 ++---
 5 files changed, 111 insertions(+), 61 deletions(-)

(limited to 'advtrains_interlocking/signal_aspect_ui.lua')

diff --git a/advtrains/nodedb.lua b/advtrains/nodedb.lua
index ff07df4..62405ce 100644
--- a/advtrains/nodedb.lua
+++ b/advtrains/nodedb.lua
@@ -212,6 +212,10 @@ function ndb.get_node(pos)
 	end
 	return n
 end
+function ndb.get_ndef(pos)
+	local n=ndb.get_node_or_nil(pos)
+	return n and minetest.registered_nodes[n.name]
+end
 function ndb.get_node_raw(pos)
 	local cid=ndbget(pos.x, pos.y, pos.z)
 	if cid then
diff --git a/advtrains_interlocking/routesetting.lua b/advtrains_interlocking/routesetting.lua
index a576139..51709dc 100644
--- a/advtrains_interlocking/routesetting.lua
+++ b/advtrains_interlocking/routesetting.lua
@@ -159,15 +159,8 @@ function ilrs.set_route(signal, route, try)
 		end
 	end
 	for i = #signals, 1, -1 do
-		if lastsig then
-			local tcbs = signals[i]
-			local pos = tcbs.signal
-			local _, assigned_by = advtrains.distant.get_main(pos)
-			if (not nodst) and (not assigned_by or assigned_by == "routesetting") then
-				advtrains.distant.assign(lastsig, pos, "routesetting", true)
-			end
-			advtrains.interlocking.signal.update_route_aspect(tcbs, i ~= 1)
-		end
+		-- TODO add logic for distant signal assign
+		advtrains.interlocking.signal.update_route_aspect(signals[i], i ~= 1)
 	end
 	
 	return true
diff --git a/advtrains_interlocking/signal_api.lua b/advtrains_interlocking/signal_api.lua
index 5216594..7826d30 100644
--- a/advtrains_interlocking/signal_api.lua
+++ b/advtrains_interlocking/signal_api.lua
@@ -5,13 +5,14 @@ local F = advtrains.formspec
 local signal = {}
 
 signal.MASP_HALT = {
-	name = nil,
-	speed = nil,
+	name = "_halt",
+	speed = 0,
+	halt = true,
 	remote = nil,
 }
 
 signal.MASP_FREE = {
-	name = "_free",
+	name = "_default",
 	speed = -1,
 	remote = nil,
 }
@@ -44,9 +45,9 @@ b) the distant signal's aspect group name & aspect table
 One concrete combination of lights/shapes that a signal signal shows. Handling these is at the discretion of
 the signal mod defining the signal, and they are typically combinations of main aspect and distant aspect
 Example:
-- A Ks signal has the aspect_group="proceed_12" set for a route
-- The signal at the end of the route shows aspect_group="proceed_8", advtrains also passes on that this means {main=8, shunt=false}
-- The ndef.advtrains.apply_aspect(pos, asp_group, dst_aspgrp, dst_aspinfo) determines that the signal should now show
+- A Ks signal has the main_aspect="proceed_12" set for a route
+- The signal at the end of the route shows main_aspect="proceed_8", advtrains also passes on that this means {main=8, shunt=false}
+- The ndef.afunction(pos, node, main_aspect, rem_aspect, rem_aspinfo) determines that the signal should now show
 		blinking green with main indicator 12 and dst indicator 8, and sets the nodes accordingly.
 		This function can now return the Aspect Info table, which will be cached by advtrains until the aspect changes again
 		and will be used when a train approaches the signal. If nil is returned, then the aspect will be queried next time
@@ -56,10 +57,14 @@ Note that once apply_aspect returns, there is no need for advtrains anymore to q
 When the signal, for any reason, wants to change its aspect by itself *without* going through the signal API then
 it should update the aspect info cache by calling advtrains.interlocking.signal.update_aspect_info(pos)
 
-Apply_aspect may also receive nil as the main aspect. It usually means that the signal is not assigned to anything particular,
+Apply_aspect may also receive the special main aspect { name = "_halt", halt = true }. It usually means that the signal is not assigned to anything particular,
 and it should cause the signal to show its most restrictive aspect. Typically it is a halt aspect, but e.g. for distant-only
 signals this would be "expect stop".
 
+A special case occurs for pure distant signals: Such signals must set apply_aspect, but must not set main_aspects. Behavior is as follows:
+- Signal is uninitialized, distant signal is not assigned to a main signal, or no route is set: main_aspect == { name = "_halt", halt = true } and rem_aspect == nil
+- A remote main signal is assigned (either by user or by route): main_aspect is always { name = "_default" } and rem_aspect / rem_aspinfo give the correct information
+
 Main aspect names starting with underscore (e.g. "_default") are reserved and must not be used!
 
 == Aspect Info ==
@@ -90,6 +95,7 @@ ndef.advtrains = {
 	apply_aspect = function(pos, node, main_aspect, rem_aspect, rem_aspinfo)
 		-- set the node to show the desired aspect
 		-- called by advtrains when this signal's aspect group or the remote signal's aspect changes
+		-- main_aspect is never nil, but can be one of the special aspects { name = "_halt", halt = true } or { name = "_default" }
 		-- MAY return the aspect_info. If it returns nil then get_aspect_info will be queried at a later point.
 	get_aspect_info(pos, main_aspect)
 		-- Returns the aspect info table (main, shunt, dst etc.)
@@ -268,36 +274,41 @@ end
 function signal.get_aspect_internal(pos, aspt)
 	if not aspt then
 		-- oh, no main aspect, nevermind
-		return nil, nil, nil
+		return signal.MASP_HALT, nil, nil
 	end
 	atdebug("get_aspect_internal",pos,aspt)
 	-- look aspect in nodedef
 	local node = advtrains.ndb.get_node_or_nil(pos)
 	local ndef = node and minetest.registered_nodes[node.name]
 	local ndefat = ndef and ndef.advtrains
-	-- only if signal defines main aspect and its set in aspt
-	if ndefat and ndefat.main_aspects and aspt.name then
-		if not ndefat.main_aspects_lookup then
-			cache_mainaspects(ndefat)
-		end
-		local masp = ndefat.main_aspects_lookup[aspt.name]
-		-- special handling for the default free aspect ("_free")
-		if aspt.name == "_free" then
-			masp = ndefat.main_aspects[1]
-		end
-		if not masp then
-			atwarn(pos,"invalid main aspect",aspt.name,"valid are",ndefat.main_aspects_lookup)
-			return nil, aspt.remote, node, ndef
-		end
-		-- if speed, then apply speed
-		if masp.speed and aspt.speed then
-			masp = table.copy(masp)
-			masp.speed = aspt.speed
+	if ndefat and ndefat.apply_aspect then
+		-- only if signal defines main aspect and its set in aspt
+		if ndefat.main_aspects and aspt.name then
+			if not ndefat.main_aspects_lookup then
+				cache_mainaspects(ndefat)
+			end
+			local masp = ndefat.main_aspects_lookup[aspt.name]
+			-- special handling for the default free aspect ("_default")
+			if aspt.name == "_default" then
+				masp = ndefat.main_aspects[1]
+			end
+			if not masp then
+				atwarn(pos,"invalid main aspect",aspt.name,"valid are",ndefat.main_aspects_lookup)
+				return signal.MASP_HALT, aspt.remote, node, ndef
+			end
+			-- if speed, then apply speed
+			if masp.speed and aspt.speed then
+				masp = table.copy(masp)
+				masp.speed = aspt.speed
+			end
+			return masp, aspt.remote, node, ndef
+		elseif aspt.name then
+			-- Distant-only signal, still supports kind of default aspect
+			return { name = aspt.name, speed = aspt.speed }, aspt.remote, node, ndef
 		end
-		return masp, aspt.remote, node, ndef
 	end
-	-- invalid node or no main aspect, return nil for masp
-	return nil, aspt.remote, node, ndef
+	-- invalid node or no main aspect, return default halt aspect for masp
+	return signal.MASP_HALT, aspt.remote, node, ndef
 end
 
 -- For the signal at pos, get the "aspect info" table. This contains the speed signalling information at this location
@@ -327,7 +338,6 @@ function signal.reapply_aspect(pts)
 	end
 	-- resolve mainaspect table by name
 	local pos = advtrains.decode_pos(pts)
-	-- note: masp may be nil, when aspt.name was nil. Valid case for distant-only signals
 	local masp, remote, node, ndef = signal.get_aspect_internal(pos, aspt)
 	-- if we have remote, resolve remote
 	local rem_masp, rem_aspi
diff --git a/advtrains_interlocking/signal_aspect_ui.lua b/advtrains_interlocking/signal_aspect_ui.lua
index e5d2003..785e6d4 100644
--- a/advtrains_interlocking/signal_aspect_ui.lua
+++ b/advtrains_interlocking/signal_aspect_ui.lua
@@ -75,14 +75,34 @@ function advtrains.interlocking.show_ip_sa_form(pos, pname)
 	end
 	local ipform = advtrains.interlocking.make_ip_formspec_component(pos, 0.5, 0.5, 7)
 	local ma, rpos = advtrains.interlocking.signal.get_aspect(pos)
-	local saform = F.S_button_exit(0, 2, 4, "sa_dst_assign", rpos and minetest.pos_to_string(rpos) or "<distant signal>")
-			.. F.S_button_exit(0, 3, 2, "sa_tmp_mainfree", "Main to free") .. F.S_button_exit(2, 3, 2, "sa_tmp_mainhalt", "Main to halt")
 	local form = {
 		"formspec_version[4]",
-		"size[8,4]",
+		"size[8,4.5]",
 		ipform,
-		saform,
 	}
+	-- Create Signal aspect formspec elements
+	local ndef = advtrains.ndb.get_ndef(pos)
+	if ndef and ndef.advtrains then
+		-- main aspect list
+		if ndef.advtrains.main_aspects then
+			local entries = { "<none>" }
+			local sel = 1
+			for i, mae in ipairs(ndef.advtrains.main_aspects) do
+				entries[i+1] = mae.description
+				if ma and ma.name == mae.name then
+					sel = i+1
+				end
+			end
+			form[#form+1] = F.dropdown(0.5, 2.5, 4, "sa_mainaspect", entries, sel, true)
+		end
+		-- distant signal assign (is shown either when main_aspect is not none, or when pure distant signal)
+		if rpos then
+			form[#form+1] = F.button_exit(0.5, 3.5, 4, "sa_undistant", "Dst: " .. minetest.pos_to_string(rpos))
+		elseif (ma and not ma.halt) or not ndef.advtrains.main_aspects then
+			form[#form+1] = F.button_exit(0.5, 3.5, 4, "sa_distant", "<assign distant>")
+		end
+	end
+	
 	minetest.show_formspec(pname, "at_il_ipsaform_"..minetest.pos_to_string(pos), table.concat(form))
 end
 
@@ -90,18 +110,42 @@ function advtrains.interlocking.handle_ip_sa_formspec_fields(pname, pos, fields)
 	if not (pos and minetest.check_player_privs(pname, {train_operator=true, interlocking=true})) then
 		return
 	end
+	local ma, rpos = advtrains.interlocking.signal.get_aspect(pos)
+	-- mainaspect dropdown
+	if fields.sa_mainaspect then
+		local idx = tonumber(fields.sa_mainaspect)
+		local new_ma = nil
+		if idx > 1 then
+			local ndef = advtrains.ndb.get_ndef(pos)
+			if ndef and ndef.advtrains and ndef.advtrains.main_aspects then
+				new_ma = ndef.advtrains.main_aspects[idx - 1]
+			end
+		end
+		if new_ma and (new_ma.name ~= ma.name or new_ma.speed ~= ma.speed) then
+			advtrains.interlocking.signal.set_aspect(pos, new_ma.name, new_ma.speed, rpos)
+		elseif not new_ma then
+			-- reset everything
+			advtrains.interlocking.signal.set_aspect(pos, nil, nil, nil)
+		end
+		
+	end
+	-- buttons
 	if fields.ip_set then
 		advtrains.interlocking.init_ip_assign(pos, pname)
+		return
 	elseif fields.ip_clear then
 		advtrains.interlocking.db.clear_ip_by_signalpos(pos)
-	elseif fields.sa_dst_assign then
+		return
+	elseif fields.sa_distant then
 		advtrains.interlocking.init_distant_assign(pos, pname)
-	elseif fields.sa_tmp_mainfree then
-		local ma, rpos = advtrains.interlocking.signal.get_aspect(pos)
-		advtrains.interlocking.signal.set_aspect(pos, "_free", -1, rpos)
-	elseif fields.sa_tmp_mainhalt then
-		local ma, rpos = advtrains.interlocking.signal.get_aspect(pos)
-		advtrains.interlocking.signal.set_aspect(pos, nil, nil, rpos)
+		return
+	elseif fields.sa_undistant then
+		advtrains.interlocking.signal.set_aspect(pos, ma.name, ma.speed, nil)
+		return
+	end
+	-- show the form again unless one of the buttons was clicked
+	if not fields.quit then
+		advtrains.interlocking.show_ip_sa_form(pos, pname)
 	end
 end
 
@@ -180,8 +224,13 @@ minetest.register_on_punchnode(function(pos, node, player, pointed_thing)
 		local ma, rpos = advtrains.interlocking.signal.get_aspect(signalpos)
 		-- if punched pos is valid signal then set it as the new remote, otherwise nil
 		local nrpos
-		if advtrains.interlocking.signal.get_signal_cap_level(pos) > 1 then nrpos = pos end
-		advtrains.interlocking.signal.set_aspect(signalpos, ma.name, ma.speed, nrpos)
+		if advtrains.interlocking.signal.get_signal_cap_level(pos) > 1 then
+			nrpos = pos
+			if not ma then -- make sure that dst is never set without a main aspect (esp. for pure distant signal case)
+				ma = { name = "_default" }
+			end
+			advtrains.interlocking.signal.set_aspect(signalpos, ma.name, ma.speed, nrpos)
+		end
 		players_assign_distant[pname] = nil
 	end
 end)
diff --git a/advtrains_signals_ks/init.lua b/advtrains_signals_ks/init.lua
index abfb194..9cb0262 100755
--- a/advtrains_signals_ks/init.lua
+++ b/advtrains_signals_ks/init.lua
@@ -50,7 +50,7 @@ end
 
 local applyaspectf_main = function(rot)
  return function(pos, node, main_aspect, dst_aspect, dst_aspect_info)
-	if not main_aspect then
+	if main_aspect.halt then
 		-- halt aspect, set red and don't do anything further
 		advtrains.ndb.swap_node(pos, {name="advtrains_signals_ks:hs_danger_"..rot, param2 = node.param2})
 		setzs3v(pos, nil, rot)
@@ -119,20 +119,14 @@ local mainaspects_main = {
 		description = "Proceed (speed 4)",
 		zs3 = "4",
 	},
-	{
-		name = "halt",
-		description = "Halt",
-		zs3 = "off",
-		halt = true,
-	},
 }
 
 --Rangiersignal
 local applyaspectf_ra = function(rot)
  -- we get here the full main_aspect table
  return function(pos, node, main_aspect, dst_aspect, dst_aspect_info)
-	if main_aspect then
-		-- any main aspect is fine, there's only one anyway
+	if not main_aspect.halt then
+		-- any non-halt main aspect is fine, there's only one anyway
 		advtrains.ndb.swap_node(pos, {name="advtrains_signals_ks:ra_shuntd_"..rot, param2 = node.param2})
 	else
 		advtrains.ndb.swap_node(pos, {name="advtrains_signals_ks:ra_danger_"..rot, param2 = node.param2})
-- 
cgit v1.2.3


From 44a8cef1d5f2433502f5982f1d57410f49bb3afc Mon Sep 17 00:00:00 2001
From: orwell <orwell@bleipb.de>
Date: Mon, 3 Jun 2024 23:38:12 +0200
Subject: set_aspect: Flexibility, set aspect either via name or allow to fully
 specify table (for advanced signals)

---
 advtrains_interlocking/signal_api.lua       | 96 +++++++++++++----------------
 advtrains_interlocking/signal_aspect_ui.lua | 16 ++---
 advtrains_signals_ks/init.lua               |  1 +
 advtrains_signals_muc_ubahn/init.lua        |  2 +-
 4 files changed, 53 insertions(+), 62 deletions(-)

(limited to 'advtrains_interlocking/signal_aspect_ui.lua')

diff --git a/advtrains_interlocking/signal_api.lua b/advtrains_interlocking/signal_api.lua
index 6f52816..a300ab1 100644
--- a/advtrains_interlocking/signal_api.lua
+++ b/advtrains_interlocking/signal_api.lua
@@ -6,15 +6,12 @@ local signal = {}
 
 signal.MASP_HALT = {
 	name = "_halt",
-	speed = 0,
 	halt = true,
-	remote = nil,
 }
 
-signal.MASP_FREE = {
+signal.MASP_DEFAULT = {
 	name = "_default",
-	speed = -1,
-	remote = nil,
+	default = true,
 }
 
 signal.ASPI_HALT = {
@@ -85,17 +82,15 @@ ndef.advtrains = {
 	}
 		-- This list is mainly for the selection dialog. Order of entries determines list order in the dropdown.
 		-- Some fields have special meaning:
-		-- name: A unique key to identify the main aspect. Only this key is saved, but APIs always receive the whole table
+		-- name: A unique key to identify the main aspect. Might be required by some code.
 		-- description: Text shown in UI dropdown
-		-- speed: a number. When present, a speed field is shown in the UI next to the dropdown (prefilled with the value).
-		--		When user selects a different speed there, this different speed replaces the value in the table whenever the main_aspect is applied.
 		-- Node can set any other fields at its discretion. They are not touched.
-		-- Note: On first call advtrains automatically inserts into the ndef.advtrains table a main_aspects_lookup hashtable
-		-- Note: Pure distant signals (that cannot show halt) should NOT have a main_aspects table
+		-- Note: Pure distant signals (that cannot show halt) should NOT have a main_aspects table.
+		--       For these signals no main aspect selection UI is shown and they cannot be startpoint of a route
 	apply_aspect = function(pos, node, main_aspect, rem_aspect, rem_aspinfo)
 		-- set the node to show the desired aspect
 		-- called by advtrains when this signal's aspect group or the remote signal's aspect changes
-		-- main_aspect is never nil, but can be one of the special aspects { name = "_halt", halt = true } or { name = "_default" }
+		-- main_aspect is never nil, but can be one of the special aspects { halt = true } or { default = true }
 		-- MAY return the aspect_info. If it returns nil then get_aspect_info will be queried at a later point.
 	get_aspect_info(pos, main_aspect)
 		-- Returns the aspect info table (main, shunt, dst etc.)
@@ -133,7 +128,9 @@ Signals that are possible start and end points for a route must satisfy:
 -- Database
 -- Signal Aspect store
 -- Stores for each signal the main aspect and other info, like the assigned remote signal
--- [signal encodePos] = { name = "proceed", [speed = 12], [remote = encodedPos] }
+-- [signal encodePos] = { main = <table or string>, [remote = encodedPos] }
+-- main is a string: "named aspect" is looked up in the main_aspects table of the ndef
+-- main is a table: this table directly is the main aspect (used for advanced signals with additional lights/indicators)
 signal.aspects = {}
 
 -- Distant signal notification. Records for each signal the distant signals that refer to it
@@ -167,7 +164,12 @@ end
 -- - Calling apply_aspect() in the signal's node definition to make the signal show the aspect
 -- - Calling apply_aspect() again whenever the remote signal changes its aspect
 -- - Notifying this signal's distant signals about changes to this signal (unless skip_dst_notify is specified)
-function signal.set_aspect(pos, main_asp_name, main_asp_speed, rem_pos, skip_dst_notify)
+-- main_asp: either a string (==name in ndef.advtrains.main_aspects) or the main aspect table directly (for advanced signals)
+function signal.set_aspect(pos, main_asp, rem_pos, skip_dst_notify)
+	-- safeguard for the two integrated aspects (these two must be passed as string key)
+	if type(main_asp)=="table" and (main_asp.name=="_default" or main_asp.name=="_halt") then
+		error("MASP_HALT and MASP_DEFAULT must be passed via string keys _halt or _default, not as tables!")
+	end
 	local main_pts = advtrains.encode_pos(pos)
 	local old_tbl = signal.aspects[main_pts]
 	local old_remote = old_tbl and old_tbl.remote
@@ -179,7 +181,7 @@ function signal.set_aspect(pos, main_asp_name, main_asp_speed, rem_pos, skip_dst
 		signal.distant_refs[old_remote][main_pts] = nil
 	end
 		
-	signal.aspects[main_pts] = { name = main_asp_name, speed = main_asp_speed, remote = new_remote }
+	signal.aspects[main_pts] = { main = main_asp, remote = new_remote }
 	-- apply aspect on main signal, this also checks new_remote
 	signal.reapply_aspect(main_pts)	
 	
@@ -266,49 +268,43 @@ end
 
 local function cache_mainaspects(ndefat)
 	ndefat.main_aspects_lookup = {}
-	for _,ma in ipairs(ndefat.main_aspects) do
+    for _,ma in ipairs(ndefat.main_aspects) do
 		ndefat.main_aspects_lookup[ma.name] = ma
-	end
+    end
+    ndefat.main_aspects_lookup[signal.MASP_HALT.name] = signal.MASP_HALT.name -- halt is always defined
+    ndefat.main_aspects_lookup[signal.MASP_DEFAULT.name] = ndefat.main_aspects[1] -- default is the first one
 end
 
+
+-- gets the main aspect. resolves named aspects to aspect table on demand
 function signal.get_aspect_internal(pos, aspt)
-	atdebug("get_aspect_internal",pos,aspt)
-	-- look aspect in nodedef
+	-- look up node and nodedef
 	local node = advtrains.ndb.get_node_or_nil(pos)
 	local ndef = node and minetest.registered_nodes[node.name]
 	if not aspt then
 		-- oh, no main aspect, nevermind
 		return signal.MASP_HALT, nil, node, ndef
 	end
-	local ndefat = ndef and ndef.advtrains
-	if ndefat and ndefat.apply_aspect then
-		-- only if signal defines main aspect and its set in aspt
-		if ndefat.main_aspects and aspt.name then
+	local ndefat = ndef.advtrains or {}
+	local masp = aspt.main or signal.MASP_HALT
+	
+	if type(masp) == "string" then
+		if masp=="_halt" then
+			masp = signal.MASP_HALT
+		elseif masp=="_default" and not ndefat.main_aspects then
+			-- case is fine, distant only signal
+			masp = signal.MASP_DEFAULT
+		else			
+			assert(ndefat.main_aspects, "With named aspects, node needs advtrains.main_aspects table!")
+			-- resolve the main aspect from the mainaspects table
 			if not ndefat.main_aspects_lookup then
 				cache_mainaspects(ndefat)
 			end
-			local masp = ndefat.main_aspects_lookup[aspt.name]
-			-- special handling for the default free aspect ("_default")
-			if aspt.name == "_default" then
-				masp = ndefat.main_aspects[1]
-			end
-			if not masp then
-				atwarn(pos,"invalid main aspect",aspt.name,"valid are",ndefat.main_aspects_lookup)
-				return signal.MASP_HALT, aspt.remote, node, ndef
-			end
-			-- if speed, then apply speed
-			if masp.speed and aspt.speed then
-				masp = table.copy(masp)
-				masp.speed = aspt.speed
-			end
-			return masp, aspt.remote, node, ndef
-		elseif aspt.name then
-			-- Distant-only signal, still supports kind of default aspect
-			return { name = aspt.name, speed = aspt.speed }, aspt.remote, node, ndef
+			masp = ndefat.main_aspects_lookup[aspt.main] or signal.MASP_DEFAULT
 		end
 	end
-	-- invalid node or no main aspect, return default halt aspect for masp
-	return signal.MASP_HALT, aspt.remote, node, ndef
+	-- return whatever the main aspect is
+	return masp, aspt.remote, node, ndef
 end
 
 -- For the signal at pos, get the "aspect info" table. This contains the speed signalling information at this location
@@ -336,10 +332,6 @@ function signal.reapply_aspect(pts)
 	local aspt = signal.aspects[pts]
 	atdebug("reapply_aspect",advtrains.decode_pos(pts),"aspt",aspt)
 	local pos = advtrains.decode_pos(pts)
-	if not aspt then
-		signal.notify_trains(pos)
-		return -- oop, nothing to do
-	end
 	-- resolve mainaspect table by name
 	local masp, remote, node, ndef = signal.get_aspect_internal(pos, aspt)
 	-- if we have remote, resolve remote
@@ -352,13 +344,11 @@ function signal.reapply_aspect(pts)
 		signal.distant_refs[remote][pts] = true
 		local rem_aspt = signal.aspects[remote]
 		atdebug("resolving remote",advtrains.decode_pos(remote),"aspt",rem_aspt)
-		if rem_aspt and rem_aspt.name then
-			local rem_pos = advtrains.decode_pos(remote)
-			rem_masp, _, _, rem_ndef = signal.get_aspect_internal(rem_pos, rem_aspt)
-			if rem_masp then
-				if rem_ndef.advtrains and rem_ndef.advtrains.get_aspect_info then
-					rem_aspi = rem_ndef.advtrains.get_aspect_info(rem_pos, rem_masp)
-				end
+		local rem_pos = advtrains.decode_pos(remote)
+		rem_masp, _, _, rem_ndef = signal.get_aspect_internal(rem_pos, rem_aspt)
+		if rem_masp then
+			if rem_ndef.advtrains and rem_ndef.advtrains.get_aspect_info then
+				rem_aspi = rem_ndef.advtrains.get_aspect_info(rem_pos, rem_masp)
 			end
 		end
 	end
diff --git a/advtrains_interlocking/signal_aspect_ui.lua b/advtrains_interlocking/signal_aspect_ui.lua
index 785e6d4..5ec4c50 100644
--- a/advtrains_interlocking/signal_aspect_ui.lua
+++ b/advtrains_interlocking/signal_aspect_ui.lua
@@ -121,11 +121,11 @@ function advtrains.interlocking.handle_ip_sa_formspec_fields(pname, pos, fields)
 				new_ma = ndef.advtrains.main_aspects[idx - 1]
 			end
 		end
-		if new_ma and (new_ma.name ~= ma.name or new_ma.speed ~= ma.speed) then
-			advtrains.interlocking.signal.set_aspect(pos, new_ma.name, new_ma.speed, rpos)
-		elseif not new_ma then
+		if new_ma then
+			advtrains.interlocking.signal.set_aspect(pos, new_ma.name, rpos)
+		else
 			-- reset everything
-			advtrains.interlocking.signal.set_aspect(pos, nil, nil, nil)
+			advtrains.interlocking.signal.clear_aspect(pos)
 		end
 		
 	end
@@ -140,7 +140,7 @@ function advtrains.interlocking.handle_ip_sa_formspec_fields(pname, pos, fields)
 		advtrains.interlocking.init_distant_assign(pos, pname)
 		return
 	elseif fields.sa_undistant then
-		advtrains.interlocking.signal.set_aspect(pos, ma.name, ma.speed, nil)
+		advtrains.interlocking.signal.set_aspect(pos, ma.name, nil)
 		return
 	end
 	-- show the form again unless one of the buttons was clicked
@@ -226,10 +226,10 @@ minetest.register_on_punchnode(function(pos, node, player, pointed_thing)
 		local nrpos
 		if advtrains.interlocking.signal.get_signal_cap_level(pos) > 1 then
 			nrpos = pos
-			if not ma then -- make sure that dst is never set without a main aspect (esp. for pure distant signal case)
-				ma = { name = "_default" }
+			if not ma or ma.halt then -- make sure that dst is never set without a main aspect (esp. for pure distant signal case)
+				ma = "_default"
 			end
-			advtrains.interlocking.signal.set_aspect(signalpos, ma.name, ma.speed, nrpos)
+			advtrains.interlocking.signal.set_aspect(signalpos, ma.name, nrpos)
 		end
 		players_assign_distant[pname] = nil
 	end
diff --git a/advtrains_signals_ks/init.lua b/advtrains_signals_ks/init.lua
index 52f8c58..46b9971 100755
--- a/advtrains_signals_ks/init.lua
+++ b/advtrains_signals_ks/init.lua
@@ -53,6 +53,7 @@ local applyaspectf_main = function(rot)
 	if main_aspect.halt then
 		-- halt aspect, set red and don't do anything further
 		advtrains.ndb.swap_node(pos, {name="advtrains_signals_ks:hs_danger_"..rot, param2 = node.param2})
+		setzs3(pos, "off", rot)
 		setzs3v(pos, nil, rot)
 		return
 	end
diff --git a/advtrains_signals_muc_ubahn/init.lua b/advtrains_signals_muc_ubahn/init.lua
index baf5d82..4088ba6 100755
--- a/advtrains_signals_muc_ubahn/init.lua
+++ b/advtrains_signals_muc_ubahn/init.lua
@@ -46,7 +46,7 @@ local function applyaspect_distant(loc)
 end
 
 for r,f in pairs(all_sigs) do
-	for loc, sbox in pairs({l={-1/2, -1/2, -1/4, 0, 1/2, 1/4}, r={0, -1/2, -1/4, 1/2, 1/2, 1/4}, t={-1/2, 0, -1/4, 1/2, 1/2, 1/4}}) do
+	for loc, sbox in pairs({l={-1/2, -1/4, -1/8, -1/4, 1/4, 1/8}, r={1/4, -1/4, -1/8, 1/2, 1/4, 1/8}, t={-1/4, 1/4, -1/8, 1/4, 1/2, 1/8}}) do
 		minetest.register_node("advtrains_signals_muc_ubahn:signal_wall_"..loc.."_"..r, {
 			drawtype = "mesh",
 			paramtype="light",
-- 
cgit v1.2.3


From 2239ba314b0a39b7e6d2351d582c396df821b281 Mon Sep 17 00:00:00 2001
From: orwell <orwell@bleipb.de>
Date: Wed, 12 Jun 2024 22:48:56 +0200
Subject: Ks Vorsignal

---
 advtrains_interlocking/signal_aspect_ui.lua        |    2 +-
 advtrains_signals_ks/init.lua                      |  112 +-
 .../models/advtrains_signals_ks_distant_smr0.obj   | 3293 +++++++++++++++++++
 .../models/advtrains_signals_ks_distant_smr30.obj  | 3291 +++++++++++++++++++
 .../models/advtrains_signals_ks_distant_smr45.obj  | 3296 ++++++++++++++++++++
 .../models/advtrains_signals_ks_distant_smr60.obj  | 3293 +++++++++++++++++++
 .../textures/advtrains_signals_ks_vs_inv.png       |  Bin 0 -> 4234 bytes
 7 files changed, 13280 insertions(+), 7 deletions(-)
 create mode 100644 advtrains_signals_ks/models/advtrains_signals_ks_distant_smr0.obj
 create mode 100644 advtrains_signals_ks/models/advtrains_signals_ks_distant_smr30.obj
 create mode 100644 advtrains_signals_ks/models/advtrains_signals_ks_distant_smr45.obj
 create mode 100644 advtrains_signals_ks/models/advtrains_signals_ks_distant_smr60.obj
 create mode 100644 advtrains_signals_ks/textures/advtrains_signals_ks_vs_inv.png

(limited to 'advtrains_interlocking/signal_aspect_ui.lua')

diff --git a/advtrains_interlocking/signal_aspect_ui.lua b/advtrains_interlocking/signal_aspect_ui.lua
index 5ec4c50..892c53b 100644
--- a/advtrains_interlocking/signal_aspect_ui.lua
+++ b/advtrains_interlocking/signal_aspect_ui.lua
@@ -229,7 +229,7 @@ minetest.register_on_punchnode(function(pos, node, player, pointed_thing)
 			if not ma or ma.halt then -- make sure that dst is never set without a main aspect (esp. for pure distant signal case)
 				ma = "_default"
 			end
-			advtrains.interlocking.signal.set_aspect(signalpos, ma.name, nrpos)
+			advtrains.interlocking.signal.set_aspect(signalpos, ma, nrpos)
 		end
 		players_assign_distant[pname] = nil
 	end
diff --git a/advtrains_signals_ks/init.lua b/advtrains_signals_ks/init.lua
index 6afc66d..d0ba6cd 100755
--- a/advtrains_signals_ks/init.lua
+++ b/advtrains_signals_ks/init.lua
@@ -122,6 +122,30 @@ local mainaspects_main = {
 	},
 }
 
+local applyaspectf_distant = function(rot)
+ return function(pos, node, main_aspect, dst_aspect, dst_aspect_info)
+	if main_aspect.halt then
+		-- halt aspect, set red and don't do anything further
+		advtrains.ndb.swap_node(pos, {name="advtrains_signals_ks:vs_slow_"..rot, param2 = node.param2})
+		setzs3v(pos, nil, rot)
+		return
+	end
+	-- select appropriate lamps based on mainaspect and dst
+	if not dst_aspect_info
+			or not dst_aspect_info.main
+			or dst_aspect_info.main == -1 then
+		advtrains.ndb.swap_node(pos, {name="advtrains_signals_ks:vs_free_"..rot, param2 = node.param2})
+		setzs3v(pos, nil, rot)
+	elseif dst_aspect_info.main == 0 then
+		advtrains.ndb.swap_node(pos, {name="advtrains_signals_ks:vs_slow_"..rot, param2 = node.param2})
+		setzs3v(pos, nil, rot)
+	else
+		advtrains.ndb.swap_node(pos, {name="advtrains_signals_ks:vs_nextslow_"..rot, param2 = node.param2})
+		setzs3v(pos, dst_aspect_info.main, rot)
+	end
+ end
+end
+
 --Rangiersignal
 local applyaspectf_ra = function(rot)
  -- we get here the full main_aspect table
@@ -146,12 +170,14 @@ local mainaspects_shunt = {
 }
 
 for _, rtab in ipairs({
-		{rot =  "0", sbox = {-1/8, -1/2, -1/2,  1/8, 1/2, -1/4}, ici=true},
-		{rot = "30", sbox = {-3/8, -1/2, -1/2, -1/8, 1/2, -1/4},},
-		{rot = "45", sbox = {-1/2, -1/2, -1/2, -1/4, 1/2, -1/4},},
-		{rot = "60", sbox = {-1/2, -1/2, -3/8, -1/4, 1/2, -1/8},},
+		{rot =  "0", sbox = {-1/8, -1/2, -1/2,  1/8, 1/2, -1/4}, ici=true, nextrot = "30"},
+		{rot = "30", sbox = {-3/8, -1/2, -1/2, -1/8, 1/2, -1/4}, nextrot = "45"},
+		{rot = "45", sbox = {-1/2, -1/2, -1/2, -1/4, 1/2, -1/4}, nextrot = "60"},
+		{rot = "60", sbox = {-1/2, -1/2, -3/8, -1/4, 1/2, -1/8}, nextrot = "0"},
 	}) do
 	local rot = rtab.rot
+	
+	-- Hauptsignal
 	for typ, prts in pairs({
 			danger   = {asp = advtrains.interlocking.signal.ASPI_HALT, n = "slow", ici=true},
 			slow     = {
@@ -219,13 +245,86 @@ for _, rtab in ipairs({
 				apply_aspect = applyaspectf_main(rot),
 				get_aspect_info = afunc,
 				route_role = "main_distant",
+				trackworker_next_rot = "advtrains_signals_ks:hs_"..typ.."_"..rtab.nextrot,
+				trackworker_rot_incr_param2 = (rot=="60")
+			},
+			on_rightclick = advtrains.interlocking.signal.on_rightclick,
+			can_dig = advtrains.interlocking.signal.can_dig,
+			after_dig_node = advtrains.interlocking.signal.after_dig,
+		})
+		-- rotatable by trackworker
+	end
+	
+	-- Vorsignal (NEU!)
+	for typ, prts in pairs({
+			-- note: the names are taken from the main signal equivalent so that the same names for the lamp images can be used
+			slow   = {asp = advtrains.interlocking.signal.ASPI_HALT, n = "nextslow", ici=true},
+			nextslow = {
+				asp = function(pos)
+					return { dst = getzs3v(pos) or 6 }
+				end,
+				n = "free"
+			},
+			free     = {
+				asp = function(pos)
+					return { dst = -1 }
+				end,
+	            n = "slow"
+			},
+		}) do
+		local tile = "advtrains_signals_ks_ltm_"..typ..".png"
+		local afunc = prts.asp
+		if type(afunc) == "table" then
+			afunc = function() return prts.asp end
+		end
+		if typ == "nextslow" then
+			tile = {
+				name = tile,
+				animation = {
+					type = "vertical_frames",
+					aspect_w = 32,
+					aspect_h = 32,
+					length = 1,
+				}
+			}
+		end
+		minetest.register_node("advtrains_signals_ks:vs_"..typ.."_"..rot, {
+			description = "Ks Distant Signal",
+			drawtype = "mesh",
+			mesh = "advtrains_signals_ks_distant_smr"..rot..".obj",
+			tiles = {"advtrains_signals_ks_mast.png", "advtrains_signals_ks_head.png", "advtrains_signals_ks_head.png", tile},
+			
+			paramtype="light",
+			sunlight_propagates=true,
+			light_source = 4,
+			
+			paramtype2 = "facedir",
+			selection_box = {
+				type = "fixed",
+				fixed = {rtab.sbox, {-1/4, -1/2, -1/4, 1/4, -7/16, 1/4}}
+			},
+			groups = {
+				cracky = 2,
+				advtrains_signal = 2,
+				not_blocking_trains = 1,
+				save_in_at_nodedb = 1,
+				not_in_creative_inventory = (rtab.ici and prts.ici) and 0 or 1,
+			},
+			drop = "advtrains_signals_ks:vs_slow_0",
+			inventory_image = "advtrains_signals_ks_vs_inv.png",
+			advtrains = {
+				-- no mainaspect
+				apply_aspect = applyaspectf_distant(rot),
+				get_aspect_info = afunc,
+				route_role = "distant",
+				trackworker_next_rot = "advtrains_signals_ks:vs_"..typ.."_"..rtab.nextrot,
+				trackworker_rot_incr_param2 = (rot=="60")
 			},
 			on_rightclick = advtrains.interlocking.signal.on_rightclick,
 			can_dig = advtrains.interlocking.signal.can_dig,
 			after_dig_node = advtrains.interlocking.signal.after_dig,
 		})
 		-- rotatable by trackworker
-		--TODO add rotation using trackworker
 	end
 	
 	
@@ -263,13 +362,14 @@ for _, rtab in ipairs({
 				apply_aspect = applyaspectf_ra(rot),
 				get_aspect_info = prts.asp,
 				route_role = "shunt",
+				trackworker_next_rot = "advtrains_signals_ks:ra_"..typ.."_"..rtab.nextrot,
+				trackworker_rot_incr_param2 = (rot=="60")
 			},
 			on_rightclick = advtrains.interlocking.signal.on_rightclick,
 			can_dig = advtrains.interlocking.signal.can_dig,
 			after_dig_node = advtrains.interlocking.signal.after_dig,
 		})
 		-- rotatable by trackworker
-		--TODO add rotation using trackworker
 	end
 
 	-- Schilder:
diff --git a/advtrains_signals_ks/models/advtrains_signals_ks_distant_smr0.obj b/advtrains_signals_ks/models/advtrains_signals_ks_distant_smr0.obj
new file mode 100644
index 0000000..9655dc4
--- /dev/null
+++ b/advtrains_signals_ks/models/advtrains_signals_ks_distant_smr0.obj
@@ -0,0 +1,3293 @@
+# Blender 3.4.1
+# www.blender.org
+mtllib advtrains_signals_ks_distant_smr0.mtl
+o KsHauptsignal_Plane.006
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diff --git a/advtrains_signals_ks/models/advtrains_signals_ks_distant_smr30.obj b/advtrains_signals_ks/models/advtrains_signals_ks_distant_smr30.obj
new file mode 100644
index 0000000..c6ba424
--- /dev/null
+++ b/advtrains_signals_ks/models/advtrains_signals_ks_distant_smr30.obj
@@ -0,0 +1,3291 @@
+# Blender 3.4.1
+# www.blender.org
+mtllib advtrains_signals_ks_distant_smr30.mtl
+o KsHauptsignal_Plane.006
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+g KsHauptsignal_Plane.006_Lights
+usemtl Lights
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diff --git a/advtrains_signals_ks/models/advtrains_signals_ks_distant_smr45.obj b/advtrains_signals_ks/models/advtrains_signals_ks_distant_smr45.obj
new file mode 100644
index 0000000..c9a3644
--- /dev/null
+++ b/advtrains_signals_ks/models/advtrains_signals_ks_distant_smr45.obj
@@ -0,0 +1,3296 @@
+# Blender 3.4.1
+# www.blender.org
+mtllib advtrains_signals_ks_distant_smr45.mtl
+o KsHauptsignal_Plane.006
+v 0.331265 -0.503378 -0.290411
+v 0.290873 -0.503378 -0.330859
+v 0.331321 -0.503378 -0.371252
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+v 0.169733 -0.503378 -0.209888
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+v 0.290873 -0.172218 -0.330859
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diff --git a/advtrains_signals_ks/models/advtrains_signals_ks_distant_smr60.obj b/advtrains_signals_ks/models/advtrains_signals_ks_distant_smr60.obj
new file mode 100644
index 0000000..a55f479
--- /dev/null
+++ b/advtrains_signals_ks/models/advtrains_signals_ks_distant_smr60.obj
@@ -0,0 +1,3293 @@
+# Blender 3.4.1
+# www.blender.org
+mtllib advtrains_signals_ks_distant_smr60.mtl
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diff --git a/advtrains_signals_ks/textures/advtrains_signals_ks_vs_inv.png b/advtrains_signals_ks/textures/advtrains_signals_ks_vs_inv.png
new file mode 100644
index 0000000..1e4acfd
Binary files /dev/null and b/advtrains_signals_ks/textures/advtrains_signals_ks_vs_inv.png differ
-- 
cgit v1.2.3


From c145e5db7473a0baab6438d7c2ed9616948d8387 Mon Sep 17 00:00:00 2001
From: orwell <orwell@bleipb.de>
Date: Sat, 22 Jun 2024 21:11:50 +0200
Subject: SmartRoute: Implement auto route search and first prototype

---
 advtrains/init.lua                          |   2 +-
 advtrains_interlocking/init.lua             |   1 +
 advtrains_interlocking/route_ui.lua         |   8 ++
 advtrains_interlocking/signal_aspect_ui.lua |   1 +
 advtrains_interlocking/smartroute.lua       | 149 ++++++++++++++++++++++++++++
 advtrains_interlocking/tcb_ts_ui.lua        |   3 +
 6 files changed, 163 insertions(+), 1 deletion(-)
 create mode 100644 advtrains_interlocking/smartroute.lua

(limited to 'advtrains_interlocking/signal_aspect_ui.lua')

diff --git a/advtrains/init.lua b/advtrains/init.lua
index 3bd8374..bca39df 100644
--- a/advtrains/init.lua
+++ b/advtrains/init.lua
@@ -33,7 +33,7 @@ advtrains = {trains={}, player_to_train_mapping={}}
 
 -- =======================Development/debugging settings=====================
 -- DO NOT USE FOR NORMAL OPERATION
-local DUMP_DEBUG_SAVE = false
+local DUMP_DEBUG_SAVE = true
 -- dump the save files in human-readable format into advtrains_DUMP
 
 local GENERATE_ATRICIFIAL_LAG = false
diff --git a/advtrains_interlocking/init.lua b/advtrains_interlocking/init.lua
index a4ddbad..5883ab3 100644
--- a/advtrains_interlocking/init.lua
+++ b/advtrains_interlocking/init.lua
@@ -22,6 +22,7 @@ dofile(modpath.."route_prog.lua")
 dofile(modpath.."routesetting.lua")
 dofile(modpath.."tcb_ts_ui.lua")
 dofile(modpath.."route_ui.lua")
+dofile(modpath.."smartroute.lua")
 dofile(modpath.."tool.lua")
 
 dofile(modpath.."approach.lua")
diff --git a/advtrains_interlocking/route_ui.lua b/advtrains_interlocking/route_ui.lua
index 982c579..863fe11 100644
--- a/advtrains_interlocking/route_ui.lua
+++ b/advtrains_interlocking/route_ui.lua
@@ -86,6 +86,9 @@ function atil.show_route_edit_form(pname, sigd, routeid)
 	form = form.."textlist[0.5,2;3,3.9;rtelog;"..table.concat(tab, ",").."]"
 	
 	form = form.."button[0.5,6;3,1;back;<<< Back to signal]"
+	if route.smartroute_generated then
+		form = form.."button[3.5,6;2,1;noautogen;Clr Autogen]"
+	end
 	form = form.."button[5.5,6;3,1;delete;Delete Route]"
 	
 	--atdebug(route.ars)
@@ -135,6 +138,11 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 			advtrains.interlocking.show_signal_aspect_selector(pname, suppasp, route.name, callback, route.aspect or advtrains.interlocking.GENERIC_FREE)
 			return
 		end
+		
+		if fields.noautogen then
+			route.smartroute_generated = nil
+		end
+		
 		if fields.delete then
 			-- if something set the route in the meantime, make sure this doesn't break.
 			atil.route.update_route(sigd, tcbs, nil, true)
diff --git a/advtrains_interlocking/signal_aspect_ui.lua b/advtrains_interlocking/signal_aspect_ui.lua
index 892c53b..39aab17 100644
--- a/advtrains_interlocking/signal_aspect_ui.lua
+++ b/advtrains_interlocking/signal_aspect_ui.lua
@@ -83,6 +83,7 @@ function advtrains.interlocking.show_ip_sa_form(pos, pname)
 	-- Create Signal aspect formspec elements
 	local ndef = advtrains.ndb.get_ndef(pos)
 	if ndef and ndef.advtrains then
+		form[#form+1] = F.label(0.5, 2, "Signal Aspect:")
 		-- main aspect list
 		if ndef.advtrains.main_aspects then
 			local entries = { "<none>" }
diff --git a/advtrains_interlocking/smartroute.lua b/advtrains_interlocking/smartroute.lua
new file mode 100644
index 0000000..770c379
--- /dev/null
+++ b/advtrains_interlocking/smartroute.lua
@@ -0,0 +1,149 @@
+-- smartroute.lua
+-- Implementation of the advtrains auto-route search
+
+local atil = advtrains.interlocking
+local ildb = atil.db
+local sr = {}
+
+
+local function otherside(s)
+	if s==1 then return 2 else return 1 end
+end
+
+--route search implementation
+-- Note this is similar to recursively_find_routes in database.lua, there used for the rscache
+
+local function recursively_find_routes(s_pos, s_connid, searching_shunt, tcbseq, mark_pos, result_table, scan_limit)
+	--atdebug("Recursively restarting at ",s_pos, s_connid, "limit left", scan_limit)
+	local ti = advtrains.get_track_iterator(s_pos, s_connid, scan_limit, false)
+	local pos, connid, bconnid = ti:next_branch()
+	pos, connid, bconnid = ti:next_track()-- step once to get ahead of previous turnout
+	local last_pos
+	repeat
+		-- record position in mark_pos
+		local pts = advtrains.encode_pos(pos)
+		mark_pos[pts] = true
+		
+		local node = advtrains.ndb.get_node_or_nil(pos)
+		atdebug("(SmartRoute) Walk ",pos, "nodename", node.name, "entering at conn",bconnid)
+		local ndef = minetest.registered_nodes[node.name]
+		if ndef.advtrains and ndef.advtrains.node_state_map then
+			-- Stop, this is a switchable node. Find out which conns we can go at
+			atdebug("(SmartRoute) Found turnout ",pos, "nodename", node.name, "entering at conn",bconnid)
+			local out_conns = ildb.get_possible_out_connids(node.name, bconnid)
+			for oconnid, state in pairs(out_conns) do
+				--atdebug("Going in direction",oconnid,"state",state)
+				recursively_find_routes(pos, oconnid, searching_shunt, table.copy(tcbseq), table.copy(mark_pos), result_table, ti.limit)
+			end
+			return
+		end
+		--otherwise, this might be a tcb
+		local tcb = ildb.get_tcb(pos)
+		if tcb then
+			local fsigd = { p = pos, s = connid }
+			atdebug("(SmartRoute) Encounter TCB ",fsigd)
+			tcbseq[#tcbseq+1] = fsigd
+			-- check if this is a possible route endpoint
+			local tcbs = tcb[connid]
+			if tcbs.signal then
+				local ndef = advtrains.ndb.get_ndef(tcbs.signal)
+				if ndef and ndef.advtrains then
+					if ndef.advtrains.route_role == "main" or ndef.advtrains.route_role == "main_distant"
+							or ndef.advtrains.route_role == "end" or ndef.advtrains.route_role == "shunt" then
+						-- signal is suitable target
+						local is_mainsignal = ndef.advtrains.route_role ~= "shunt"
+						-- record the found route in the results
+						result_table[#result_table+1] = {
+							tcbseq = table.copy(tcbseq),
+							mark_pos = table.copy(mark_pos),
+							shunt_route = not is_mainsignal,
+							to_end_of_track = false,
+							name = tcbs.signal_name or atil.sigd_to_string(fsigd)
+						}
+						-- if this is a main signal and/or we are only searching shunt routes, stop the search here
+						if is_mainsignal or searching_shunt then
+							atdebug("(SmartRoute) Terminating here because it is main or only shunt routes searched")
+							return
+						end
+					end
+				end
+			end
+		end
+		-- Go forward
+		last_pos = pos
+		pos, connid, bconnid = ti:next_track()
+	until not pos -- this stops the loop when either the track end is reached or the limit is hit
+	--atdebug("recursively_find_routes: Reached track end or limit at", last_pos, ". This path is not saved, returning")
+end
+
+local function build_route_from_foundroute(froute, name)
+	local route = {
+		name = froute.name,
+		use_rscache = true,
+		smartroute_generated = true,
+	}
+	for _, sigd in ipairs(froute.tcbseq) do
+		route[#route+1] = { next = sigd, locks = {} }
+	end
+	return route
+end
+
+-- Maximum scan length for track iterator
+local TS_MAX_SCAN = 1000
+
+function sr.init(pname, sigd)
+	-- is start signal a shunt signal?
+	local is_startsignal_shunt = false
+	local tcbs = ildb.get_tcbs(sigd)
+	if tcbs.signal then
+		local ndef = advtrains.ndb.get_ndef(tcbs.signal)
+		if ndef and ndef.advtrains then
+			if ndef.advtrains.route_role == "shunt" then
+				is_startsignal_shunt = true
+			end
+		end
+	end
+	local result_table = {}
+	recursively_find_routes(sigd.p, sigd.s, is_startsignal_shunt, {}, {}, result_table, TS_MAX_SCAN)
+	
+	atdebug("Smartroute search finished:",result_table)
+	
+	-- Short-circuit logic right now for testing
+	-- go through and delete all routes that are autogenerated
+	local i = 1
+	while i<=#tcbs.routes do
+		if tcbs.routes[i].smartroute_generated then
+			table.remove(tcbs.routes, i)
+		else
+			i=i+1
+		end
+	end
+	-- just plainly create routes!
+	for idx, froute in ipairs(result_table) do
+		tcbs.routes[#tcbs.routes+1] = build_route_from_foundroute(froute)
+	end
+	atwarn("Smartroute done!")
+end
+
+
+
+--[[
+	player1 = {
+		origin = <sigd>
+		found_routes = {
+			{ tcbseq = {<sigd1>, <sigd2>, <end_sigd>}, mark_pos = { table with keys being encoded_pos of rails constituting route }, to_end_of_track = false, shunt_route = false }
+		}
+	}
+]]--
+local player_smartroute = {}
+
+minetest.register_on_punchnode(function(pos, node, player, pointed_thing)
+	local pname = player:get_player_name()
+	if not minetest.check_player_privs(pname, "interlocking") then
+		return
+	end
+	-- TODO
+end)
+
+
+advtrains.interlocking.smartroute = sr
diff --git a/advtrains_interlocking/tcb_ts_ui.lua b/advtrains_interlocking/tcb_ts_ui.lua
index bdb0a18..7f75bb9 100755
--- a/advtrains_interlocking/tcb_ts_ui.lua
+++ b/advtrains_interlocking/tcb_ts_ui.lua
@@ -616,6 +616,9 @@ function advtrains.interlocking.show_signalling_form(sigd, pname, sel_rte, calle
 			local strtab = {}
 			for idx, route in ipairs(tcbs.routes) do
 				local clr = ""
+				if route.smartroute_generated then
+					clr = "#FFFF55"
+				end
 				if route.ars then
 					clr = "#FF5555"
 					if route.ars.default then
-- 
cgit v1.2.3


From 2bfc24ef27ea4098a93cc025b513afe1b8c4ee1f Mon Sep 17 00:00:00 2001
From: orwell <orwell@bleipb.de>
Date: Mon, 25 Nov 2024 23:39:56 +0100
Subject: Auto-assign signal to TCB if it finds one ahead of the influence
 point

---
 advtrains/helpers.lua                       |  2 +-
 advtrains_interlocking/signal_aspect_ui.lua | 26 ++++++++++++++++++++++++++
 2 files changed, 27 insertions(+), 1 deletion(-)

(limited to 'advtrains_interlocking/signal_aspect_ui.lua')

diff --git a/advtrains/helpers.lua b/advtrains/helpers.lua
index d7e691d..172cf07 100644
--- a/advtrains/helpers.lua
+++ b/advtrains/helpers.lua
@@ -578,7 +578,7 @@ local trackiter_mt = {
 -- initial_pos: the initial track position of the track iterator
 -- initial_connid: the connection index in which to traverse. If nil, adds a "branch" for every connection of the track (traverse in all directions)
 -- limit: maximum distance from the start point after which the traverser stops
--- follow_all: if true, follows all branches at multi-connection tracks, even the ones pointing backwards or the crossing track on crossings. If false, follows only switches in driving direction.
+-- follow_all: NOT IMPLEMENTED (supposed: if true, follows all branches at multi-connection tracks, even the ones pointing backwards or the crossing track on crossings. If false, follows only switches in driving direction.)
 
 -- Functions of the returned TrackIterator can be called via the Lua : notation, such as ti:next_track()
 -- If only the main track needs to be followed, use only the ti:next_track() function and do not call ti:next_branch().
diff --git a/advtrains_interlocking/signal_aspect_ui.lua b/advtrains_interlocking/signal_aspect_ui.lua
index 39aab17..9f2675f 100644
--- a/advtrains_interlocking/signal_aspect_ui.lua
+++ b/advtrains_interlocking/signal_aspect_ui.lua
@@ -186,6 +186,30 @@ function advtrains.interlocking.init_distant_assign(pos, pname)
 	players_assign_distant[pname] = pos
 end
 
+local function try_auto_assign_to_tcb(signalpos, pos, connid, pname)
+	local ti = advtrains.get_track_iterator(pos, connid, 6, false) -- maximum 6 track nodes ahead
+	local apos, aconnid = ti:next_branch()
+	while apos do
+		-- check for presence of a tcb
+		local tcb = advtrains.interlocking.db.get_tcb(apos)
+		if tcb then
+			-- check on the pointing connid whether it has a signal already
+			if not tcb[aconnid].signal then
+				-- go ahead and assign
+				local sigd = { p=apos, s=aconnid }
+				advtrains.interlocking.db.assign_signal_to_tcbs(signalpos, sigd)
+				minetest.chat_send_player(pname, "Assigned signal to the TCB at "..core.pos_to_string(apos))
+				advtrains.interlocking.show_tcb_marker(apos)
+				advtrains.interlocking.show_signalling_form(sigd, pname)
+			end
+			-- in all cases return
+			return
+		end
+		apos, aconnid = ti:next_track()
+	end
+	-- if we end up here limit is up
+end
+
 minetest.register_on_punchnode(function(pos, node, player, pointed_thing)
 	local pname = player:get_player_name()
 	if not minetest.check_player_privs(pname, "interlocking") then
@@ -207,6 +231,8 @@ minetest.register_on_punchnode(function(pos, node, player, pointed_thing)
 					advtrains.interlocking.db.set_ip_signal(pts, plconnid, signalpos)
 					ipmarker(pos, plconnid)
 					minetest.chat_send_player(pname, "Configuring Signal: Successfully set influence point")
+					-- Try to find a TCB ahead and auto assign this signal there
+					try_auto_assign_to_tcb(signalpos, pos, plconnid, pname)
 				else
 					minetest.chat_send_player(pname, "Configuring Signal: Influence point of another signal is already present!")
 				end
-- 
cgit v1.2.3


From c081129fe040d2dd62d36777ec5eeae315fd0928 Mon Sep 17 00:00:00 2001
From: orwell <orwell@bleipb.de>
Date: Sun, 1 Dec 2024 23:51:41 +0100
Subject: Misc Fixes found during play

---
 advtrains/trackplacer.lua                   |  6 +++---
 advtrains_interlocking/database.lua         |  6 +++---
 advtrains_interlocking/signal_aspect_ui.lua | 15 ++++++++++++++-
 advtrains_interlocking/tcb_ts_ui.lua        | 11 +++++++++++
 4 files changed, 31 insertions(+), 7 deletions(-)

(limited to 'advtrains_interlocking/signal_aspect_ui.lua')

diff --git a/advtrains/trackplacer.lua b/advtrains/trackplacer.lua
index 1543209..3278b8c 100644
--- a/advtrains/trackplacer.lua
+++ b/advtrains/trackplacer.lua
@@ -152,10 +152,10 @@ local function check_or_bend_rail(origin, dir, pname, commit)
 	end
 end
 
-local function track_place_node(pos, node, ndef, pname)
+local function track_place_node(pos, node, ndef_p, pname)
 	--atdebug("track_place_node: ",pos, node)
 	advtrains.ndb.swap_node(pos, node)
-	local ndef = minetest.registered_nodes[node.name]
+	local ndef = ndef_p or minetest.registered_nodes[node.name]
 	if ndef and ndef.after_place_node then
 		-- resolve player again
 		local player = pname and core.get_player_by_name(pname) or nil
@@ -202,7 +202,7 @@ function tp.place_track(pos, tpg, pname, yaw)
 					if node then
 						check_or_bend_rail(pos, conn1, pname, true)
 						check_or_bend_rail(pos, conn2, pname, true)
-						track_place_node(pos, node, pname) -- calls after_place_node implicitly
+						track_place_node(pos, node, nil, pname) -- calls after_place_node implicitly
 						return true
 					end
 				end
diff --git a/advtrains_interlocking/database.lua b/advtrains_interlocking/database.lua
index 75247de..c05e69a 100644
--- a/advtrains_interlocking/database.lua
+++ b/advtrains_interlocking/database.lua
@@ -701,7 +701,7 @@ local function recursively_find_routes(s_pos, s_connid, locks_found, result_tabl
 	local pos, connid, bconnid = ti:next_branch()
 	pos, connid, bconnid = ti:next_track()-- step once to get ahead of previous turnout
 	local last_pos
-	repeat
+	while pos do -- this stops the loop when either the track end is reached or the limit is hit
 		local node = advtrains.ndb.get_node_or_nil(pos)
 		--atdebug("Walk ",pos, "nodename", node.name, "entering at conn",bconnid)
 		local ndef = minetest.registered_nodes[node.name]
@@ -739,7 +739,7 @@ local function recursively_find_routes(s_pos, s_connid, locks_found, result_tabl
 		-- Go forward
 		last_pos = pos
 		pos, connid, bconnid = ti:next_track()
-	until not pos -- this stops the loop when either the track end is reached or the limit is hit
+	end 
 	--atdebug("recursively_find_routes: Reached track end or limit at", last_pos, ". This path is not saved, returning")
 end
 
@@ -832,7 +832,7 @@ function ildb.remove_tcb_at(pos, pname, skip_tsrepair)
 	advtrains.interlocking.remove_tcb_marker(pos)
 	-- If needed, merge the track sections here
 	if not skip_tsrepair then
-		ildb.check_and_repair_ts_at_pos(pos, pname)
+		ildb.check_and_repair_ts_at_pos(pos, nil, pname)
 	end
 	return true
 end
diff --git a/advtrains_interlocking/signal_aspect_ui.lua b/advtrains_interlocking/signal_aspect_ui.lua
index 9f2675f..25abb2d 100644
--- a/advtrains_interlocking/signal_aspect_ui.lua
+++ b/advtrains_interlocking/signal_aspect_ui.lua
@@ -186,8 +186,11 @@ function advtrains.interlocking.init_distant_assign(pos, pname)
 	players_assign_distant[pname] = pos
 end
 
+-- Tries to automatically find a TCB to assign to the signal, or a main signal if this is a pure distant signal and another signal is found before the TCB
 local function try_auto_assign_to_tcb(signalpos, pos, connid, pname)
-	local ti = advtrains.get_track_iterator(pos, connid, 6, false) -- maximum 6 track nodes ahead
+	local pure_distant = advtrains.interlocking.signal.get_signal_cap_level(signalpos) == 2 -- exactly 2: pure distant sig
+	local is_past_first = false
+	local ti = advtrains.get_track_iterator(pos, connid, pure_distant and 150 or 16, false) -- maximum 16 track nodes ahead
 	local apos, aconnid = ti:next_branch()
 	while apos do
 		-- check for presence of a tcb
@@ -204,8 +207,18 @@ local function try_auto_assign_to_tcb(signalpos, pos, connid, pname)
 			end
 			-- in all cases return
 			return
+		elseif pure_distant and is_past_first then
+			-- try to find another signal's influence point here which could be the remote of a distant signal
+			local pts = advtrains.roundfloorpts(apos)
+			local mainsig = advtrains.interlocking.db.get_ip_signal(pts, aconnid)
+			if mainsig and advtrains.interlocking.signal.get_signal_cap_level(mainsig) >= 3 then
+				advtrains.interlocking.signal.set_aspect(signalpos, "_default", mainsig)
+				minetest.chat_send_player(pname, "Assigned distant signal to the main signal at "..core.pos_to_string(mainsig))
+				return
+			end
 		end
 		apos, aconnid = ti:next_track()
+		is_past_first = true
 	end
 	-- if we end up here limit is up
 end
diff --git a/advtrains_interlocking/tcb_ts_ui.lua b/advtrains_interlocking/tcb_ts_ui.lua
index 54ffe9b..87e56ca 100755
--- a/advtrains_interlocking/tcb_ts_ui.lua
+++ b/advtrains_interlocking/tcb_ts_ui.lua
@@ -768,6 +768,7 @@ function advtrains.interlocking.show_signalling_form(sigd, pname, sel_rte, calle
 					form = form.."button[0.5,6;  5,1;setroute;Set Route]"
 					form = form.."button[0.5,7;2,1;dsproute;Show]"
 					if hasprivs then
+						form = form.."button[2.5,7;1,1;setarsdefault;Set Def.]"
 						form = form.."button[3.5,7;2,1;editroute;Edit]"
 						if sel_rte > 1 then
 							form = form .. "button[5.5,4;0.5,0.3;moveup;↑]"
@@ -984,6 +985,16 @@ minetest.register_on_player_receive_fields(function(player, formname, fields)
 					advtrains.interlocking.show_route_edit_form(pname, sigd, sel_rte)
 					return
 				end
+				if fields.setarsdefault and hasprivs then
+					for rid, route in ipairs(tcbs.routes) do
+						local isdefault = rid == sel_rte
+						if route.ars then
+							route.ars.default = isdefault
+						elseif isdefault then
+							route.ars = {default = true}
+						end
+					end
+				end
 			end
 		end
 		
-- 
cgit v1.2.3


From fed637080a4dcfee889bdfa30ca4744018b92e00 Mon Sep 17 00:00:00 2001
From: orwell <orwell@bleipb.de>
Date: Tue, 7 Jan 2025 01:18:23 +0100
Subject: Add facility to auto-name signals when they are assigned

---
 advtrains_interlocking/autonaming.lua       | 69 +++++++++++++++++++++++++++++
 advtrains_interlocking/init.lua             |  1 +
 advtrains_interlocking/signal_aspect_ui.lua |  2 +
 advtrains_interlocking/tcb_ts_ui.lua        |  6 +++
 4 files changed, 78 insertions(+)
 create mode 100644 advtrains_interlocking/autonaming.lua

(limited to 'advtrains_interlocking/signal_aspect_ui.lua')

diff --git a/advtrains_interlocking/autonaming.lua b/advtrains_interlocking/autonaming.lua
new file mode 100644
index 0000000..f88ccbd
--- /dev/null
+++ b/advtrains_interlocking/autonaming.lua
@@ -0,0 +1,69 @@
+-- autonaming.lua
+-- Automatically set names of signals (and maybe track sections) based on numbering
+
+
+local function find_highest_count(prefix)
+	local cnt = 0
+	local pattern = "^"..prefix.."(%d+)$"
+	local alltcb = advtrains.interlocking.db.get_all_tcb()
+	for _,tcb in pairs(alltcb) do
+		for _,tcbs in pairs(tcb) do
+			if tcbs.signal_name then
+				local mnum = string.match(tcbs.signal_name, pattern)
+				if mnum then
+					local n = tonumber(mnum)
+					if n and n > cnt then
+						cnt = n
+					end
+				end
+			end
+		end
+	end
+	return cnt
+end
+
+-- { pname = { prefix = "FOO", count = 7 } }
+local player_prefix_info = {}
+
+function advtrains.interlocking.set_autoname_prefix(pname, prefix)
+	if prefix and #prefix>0 then
+		-- check that it is valid
+		if not string.match(prefix,"[A-Za-z_]+") then
+			return false, "Illegal prefix, only letters and _ allowed"
+		end
+		-- scan database for this prefix to find out the highest count
+		local count = find_highest_count(prefix)
+		player_prefix_info[pname] = { prefix = prefix, count = count}
+		return true, "Prefix set, next signal name will be: ".. advtrains.interlocking.get_next_autoname(pname, true)
+	else
+		player_prefix_info[pname] = nil
+		return true, "Prefix unset, signals are not auto-named for you!"
+	end
+end
+
+function advtrains.interlocking.get_next_autoname(pname, no_increment)
+	local pi = player_prefix_info[pname]
+	if pi then
+		local name = pi.prefix..(pi.count+1)
+		if not no_increment then pi.count = pi.count+1 end
+		return name
+	else
+		return nil
+	end
+end
+
+function advtrains.interlocking.add_autoname_to_tcbs(tcbs, pname)
+	if not tcbs or not pname then return end
+	if tcbs.signal_name then return end -- name already set
+	
+	tcbs.signal_name = advtrains.interlocking.get_next_autoname(pname)
+end
+
+minetest.register_chatcommand("at_nameprefix",
+	{
+		params = "<prefix>",
+		description = "Sets the current prefix for automatically naming interlocking components. Example: '/at_nameprefix TEST' - signals will be named TEST1, TEST2 and so on",
+		privs = {interlocking = true},
+		func = advtrains.interlocking.set_autoname_prefix,
+})
+
diff --git a/advtrains_interlocking/init.lua b/advtrains_interlocking/init.lua
index 5883ab3..c3b1119 100644
--- a/advtrains_interlocking/init.lua
+++ b/advtrains_interlocking/init.lua
@@ -23,6 +23,7 @@ dofile(modpath.."routesetting.lua")
 dofile(modpath.."tcb_ts_ui.lua")
 dofile(modpath.."route_ui.lua")
 dofile(modpath.."smartroute.lua")
+dofile(modpath.."autonaming.lua")
 dofile(modpath.."tool.lua")
 
 dofile(modpath.."approach.lua")
diff --git a/advtrains_interlocking/signal_aspect_ui.lua b/advtrains_interlocking/signal_aspect_ui.lua
index 25abb2d..d67572c 100644
--- a/advtrains_interlocking/signal_aspect_ui.lua
+++ b/advtrains_interlocking/signal_aspect_ui.lua
@@ -201,6 +201,8 @@ local function try_auto_assign_to_tcb(signalpos, pos, connid, pname)
 				-- go ahead and assign
 				local sigd = { p=apos, s=aconnid }
 				advtrains.interlocking.db.assign_signal_to_tcbs(signalpos, sigd)
+				-- use auto-naming
+				advtrains.interlocking.add_autoname_to_tcbs(tcb[aconnid], pname)
 				minetest.chat_send_player(pname, "Assigned signal to the TCB at "..core.pos_to_string(apos))
 				advtrains.interlocking.show_tcb_marker(apos)
 				advtrains.interlocking.show_signalling_form(sigd, pname)
diff --git a/advtrains_interlocking/tcb_ts_ui.lua b/advtrains_interlocking/tcb_ts_ui.lua
index edc6921..9abd4f7 100755
--- a/advtrains_interlocking/tcb_ts_ui.lua
+++ b/advtrains_interlocking/tcb_ts_ui.lua
@@ -192,6 +192,8 @@ minetest.register_on_punchnode(function(pos, node, player, pointed_thing)
 					local tcbs = ildb.get_tcbs(sigd)
 					if tcbs then
 						ildb.assign_signal_to_tcbs(pos, sigd)
+						-- use auto-naming
+						advtrains.interlocking.add_autoname_to_tcbs(tcbs, pname)
 						minetest.chat_send_player(pname, "Configuring TCB: Successfully assigned signal.")
 						advtrains.interlocking.show_ip_form(pos, pname, true)
 					else
@@ -265,6 +267,8 @@ function advtrains.interlocking.self_tcb_make_after_place_callback(fail_silently
 			ildb.assign_signal_to_tcbs(pos, sigd)
 			-- assign influence point to itself
 			ildb.set_ip_signal(advtrains.roundfloorpts(pos), 1, pos)
+			-- use auto-naming
+			advtrains.interlocking.add_autoname_to_tcbs(tcbs, pname)
 		end
 	end
 end
@@ -350,6 +354,8 @@ function advtrains.interlocking.self_tcb_make_on_rightclick_callback(fail_silent
 				ildb.assign_signal_to_tcbs(pos, sigd)
 				-- assign influence point to itself
 				ildb.set_ip_signal(advtrains.roundfloorpts(pos), 1, pos)
+				-- use auto-naming
+				advtrains.interlocking.add_autoname_to_tcbs(tcbs, pname)
 			end
 			-- in any case open the signalling form nouw
 			local control = player:get_player_control()
-- 
cgit v1.2.3


From a45a9e27197dc98952f4ada7842f49d81899ab07 Mon Sep 17 00:00:00 2001
From: orwell <orwell@bleipb.de>
Date: Wed, 15 Jan 2025 23:19:26 +0100
Subject: Fix bugs found in the video

---
 advtrains_interlocking/route_prog.lua       | 2 +-
 advtrains_interlocking/signal_api.lua       | 6 +++++-
 advtrains_interlocking/signal_aspect_ui.lua | 4 +++-
 3 files changed, 9 insertions(+), 3 deletions(-)

(limited to 'advtrains_interlocking/signal_aspect_ui.lua')

diff --git a/advtrains_interlocking/route_prog.lua b/advtrains_interlocking/route_prog.lua
index 3bdf6d6..71ebdf3 100644
--- a/advtrains_interlocking/route_prog.lua
+++ b/advtrains_interlocking/route_prog.lua
@@ -537,7 +537,7 @@ minetest.register_on_punchnode(function(pos, node, player, pointed_thing)
 			show_routing_form(pname, tcbpos)
 			advtrains.interlocking.visualize_route(rp.origin, rp.route, "prog_"..pname, rp.tmp_lcks, pname)
 			return
-		elseif advtrains.interlocking.database.get_tcb(pos) then
+		elseif advtrains.interlocking.db.get_tcb(pos) then
 			-- the punched node itself is a TCB
 			show_routing_form(pname, pos)
 			advtrains.interlocking.visualize_route(rp.origin, rp.route, "prog_"..pname, rp.tmp_lcks, pname)
diff --git a/advtrains_interlocking/signal_api.lua b/advtrains_interlocking/signal_api.lua
index e92658d..f624f7a 100644
--- a/advtrains_interlocking/signal_api.lua
+++ b/advtrains_interlocking/signal_api.lua
@@ -462,7 +462,11 @@ function signal.after_dig(pos, oldnode, oldmetadata, player)
 		advtrains.interlocking.db.unassign_signal_for_tcbs(sigd)
 		minetest.chat_send_player(player:get_player_name(), "Signal has been unassigned. Name and routes are kept for reuse.")
 	end
-	-- TODO clear influence point
+	-- clear influence point
+	local ipts,iconnid = advtrains.interlocking.db.get_ip_by_signalpos(pos)
+	if ipts then
+		advtrains.interlocking.db.clear_ip_signal(ipts, iconnid)
+	end
 	advtrains.interlocking.signal.unregister_aspect(pos)
 end
 
diff --git a/advtrains_interlocking/signal_aspect_ui.lua b/advtrains_interlocking/signal_aspect_ui.lua
index d67572c..98a332a 100644
--- a/advtrains_interlocking/signal_aspect_ui.lua
+++ b/advtrains_interlocking/signal_aspect_ui.lua
@@ -247,7 +247,9 @@ minetest.register_on_punchnode(function(pos, node, player, pointed_thing)
 					ipmarker(pos, plconnid)
 					minetest.chat_send_player(pname, "Configuring Signal: Successfully set influence point")
 					-- Try to find a TCB ahead and auto assign this signal there
-					try_auto_assign_to_tcb(signalpos, pos, plconnid, pname)
+					if advtrains.interlocking.signal.get_signal_cap_level(signalpos) >= 2 then
+						try_auto_assign_to_tcb(signalpos, pos, plconnid, pname)
+					end
 				else
 					minetest.chat_send_player(pname, "Configuring Signal: Influence point of another signal is already present!")
 				end
-- 
cgit v1.2.3


From d9605e0c20e47f691893e3a5edafcd7a35a770f7 Mon Sep 17 00:00:00 2001
From: orwell <orwell@bleipb.de>
Date: Thu, 24 Apr 2025 20:34:19 +0200
Subject: Suppress auto assign to TCB/Distant if Aux1 is pressed

---
 advtrains_interlocking/signal_aspect_ui.lua | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'advtrains_interlocking/signal_aspect_ui.lua')

diff --git a/advtrains_interlocking/signal_aspect_ui.lua b/advtrains_interlocking/signal_aspect_ui.lua
index 98a332a..49e7d8b 100644
--- a/advtrains_interlocking/signal_aspect_ui.lua
+++ b/advtrains_interlocking/signal_aspect_ui.lua
@@ -247,7 +247,9 @@ minetest.register_on_punchnode(function(pos, node, player, pointed_thing)
 					ipmarker(pos, plconnid)
 					minetest.chat_send_player(pname, "Configuring Signal: Successfully set influence point")
 					-- Try to find a TCB ahead and auto assign this signal there
-					if advtrains.interlocking.signal.get_signal_cap_level(signalpos) >= 2 then
+					local pc = player:get_player_control()
+					local no_auto_assign = pc.aux1
+					if not no_auto_assign and advtrains.interlocking.signal.get_signal_cap_level(signalpos) >= 2 then
 						try_auto_assign_to_tcb(signalpos, pos, plconnid, pname)
 					end
 				else
-- 
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