1 files changed, 105 insertions, 0 deletions
diff --git a/interlocking.lua b/interlocking.lua
new file mode 100644
index 0000000..98faa94
--- /dev/null
+++ b/interlocking.lua
@@ -0,0 +1,105 @@
+local setaspectf = function()
+ return function(pos, node, asp)
+	if not asp.main.free then
+		if asp.shunt.free then
+			advtrains.ndb.swap_node(pos, {name="linetrack:signal_shunt", param2 = node.param2})
+		else
+			advtrains.ndb.swap_node(pos, {name="linetrack:signal_danger", param2 = node.param2})
+		end
+	else
+		if asp.dst.free and asp.main.speed == -1 then
+			advtrains.ndb.swap_node(pos, {name="linetrack:signal_free", param2 = node.param2})
+		else
+			advtrains.ndb.swap_node(pos, {name="linetrack:signal_slow", param2 = node.param2})
+		end
+	end
+	local meta = minetest.get_meta(pos)
+	if meta then
+		meta:set_string("infotext", minetest.serialize(asp))
+	end
+ end
+end
+
+local suppasp = {
+		main = {
+			free = nil,
+			speed = {6, -1},
+		},
+		dst = {
+			free = nil,
+			speed = nil,
+		},
+		shunt = {
+			free = nil,
+			proceed_as_main = true,
+		},
+		info = {
+			call_on = false,
+			dead_end = false,
+			w_speed = nil,
+		}
+}
+
+for typ, prts in pairs({
+		danger = {asp = advtrains.interlocking.DANGER, n = "slow", ici=true},
+		slow   = {asp = { main = { free = true, speed = 6 }, shunt = {proceed_as_main = true}} , n = "free"},
+		free   = {asp = { main = { free = true, speed = -1 }, shunt = {proceed_as_main = true}} , n = "shunt"},
+		shunt  = {asp = { main = {free = false}, shunt = {free = true} } , n = "danger"},
+	}) do
+	minetest.register_node("linetrack:signal_"..typ, {
+		description = "Generic Main Signal",
+		drawtype = "mesh",
+		mesh = "linetrack_signal.obj",
+		tiles = {"linetrack_signal_"..typ..".png"},
+		
+		paramtype="light",
+		sunlight_propagates=true,
+		light_source = 4,
+		walkable = false,
+		
+		groups = {
+			cracky = 2,
+			advtrains_signal = 2,
+			not_blocking_trains = 1,
+			save_in_at_nodedb = 1,
+			not_in_creative_inventory = prts.ici and 0 or 1,
+		},
+		drop = "linetrack:signal_danger",
+		inventory_image = "linetrack_signal_danger.png",
+		sounds = default.node_sound_stone_defaults(),
+		advtrains = {
+			set_aspect = setaspectf(),
+			supported_aspects = suppasp,
+			get_aspect = function(pos, node)
+				return prts.asp
+			end,
+		},
+		use_texture_alpha = true,
+		on_rightclick = advtrains.interlocking.signal_rc_handler,
+		can_dig = advtrains.interlocking.signal_can_dig,
+		use_texture_alpha = true,
+	})
+end
+
+local at_tcb = minetest.registered_nodes["advtrains_interlocking:tcb_node"]
+
+minetest.register_node("linetrack:tcb_node", {
+	drawtype = "mesh",
+	paramtype="light",
+	paramtype2="facedir",
+	walkable = false,
+	mesh = "linetrack_signal.obj",
+	tiles = {"linetrack_tcb.png"},
+	description="Line Circuit Break",
+	sunlight_propagates=true,
+	groups = {
+		cracky=3,
+		not_blocking_trains=1,
+		--save_in_at_nodedb=2,
+		at_il_track_circuit_break = 1,
+	},
+	after_place_node = at_tcb.after_place_node,
+	on_rightclick = at_tcb.on_rightclick,
+	can_dig = at_tcb.can_dig,
+	after_dig_node = at_tcb.after_dig_node,
+})