1 files changed, 76 insertions, 0 deletions
diff --git a/advtrains_luaautomation/pcnaming.lua b/advtrains_luaautomation/pcnaming.lua
new file mode 100644
index 0000000..ebb769f
--- /dev/null
+++ b/advtrains_luaautomation/pcnaming.lua
@@ -0,0 +1,76 @@
+--pcnaming.lua
+--a.k.a Passive component naming
+--Allows to assign names to passive components, so they can be called like:
+--setstate("iamasignal", "green")
+atlatc.pcnaming={name_map={}}
+function atlatc.pcnaming.load(stuff)
+	if type(stuff)=="table" then
+		atlatc.pcnaming.name_map=stuff
+	end
+end
+function atlatc.pcnaming.save()
+	return atlatc.pcnaming.name_map
+end
+
+function atlatc.pcnaming.resolve_pos(pos, func_name)
+	if type(pos)=="string" then
+		local e = atlatc.pcnaming.name_map[pos]
+		if e then return e end
+	elseif type(pos)=="table" and pos.x and pos.y and pos.z then
+		return pos
+	end
+	error("Invalid position supplied to " .. (func_name or "???")..": " .. dump(pos))
+end
+
+minetest.register_craftitem("advtrains_luaautomation:pcnaming",{
+	description = attrans("Passive Component Naming Tool\n\nRight-click to name a passive component."),
+	groups = {cracky=1}, -- key=name, value=rating; rating=1..3.
+	inventory_image = "atlatc_pcnaming.png",
+	wield_image = "atlatc_pcnaming.png",
+	stack_max = 1,
+	on_place = function(itemstack, placer, pointed_thing)
+		local pname = placer:get_player_name()
+		if not pname then
+			return
+		end
+		if not minetest.check_player_privs(pname, {atlatc=true}) then
+			minetest.chat_send_player(pname, "Missing privilege: atlatc")
+			return
+		end
+		if pointed_thing.type=="node" then
+			local pos=pointed_thing.under
+			if advtrains.is_protected(pos, pname) then
+				minetest.record_protection_violation(pos, pname)
+				return
+			end
+			local node = advtrains.ndb.get_node(pos)
+			if node.name and (minetest.get_item_group(node.name, "advtrains_signal")>0 or advtrains.is_passive(pos)) then
+				--look if this one already has a name
+				local pn=""
+				for name, npos in pairs(atlatc.pcnaming.name_map) do
+					if vector.equals(npos, pos) then
+						pn=name
+					end
+				end
+				minetest.show_formspec(pname, "atlatc_naming_"..minetest.pos_to_string(pos), "field[pn;Set name of component (empty to clear);"..minetest.formspec_escape(pn).."]")
+			end
+		end
+	end,
+})
+minetest.register_on_player_receive_fields(function(player, formname, fields)
+	local pts=string.match(formname, "^atlatc_naming_(.+)")
+	if pts then
+		local pos=minetest.string_to_pos(pts)
+		if fields.pn then
+			--first remove all occurences
+			for name, npos in pairs(atlatc.pcnaming.name_map) do
+				if vector.equals(npos, pos) then
+					atlatc.pcnaming.name_map[name]=nil
+				end
+			end
+			if fields.pn~="" then
+				atlatc.pcnaming.name_map[fields.pn]=pos
+			end
+		end
+	end
+end)