Version MFF.

detector.lua

@@ -0,0 +1,58 @@
+local mesecons_rules = mesecon.rules.flat
+
+function carts:turnoff_detector_rail(pos)
+	local node = minetest.get_node(pos)
+	if minetest.get_item_group(node.name, "detector_rail") == 1 then
+		if node.name == "carts:detectorrail_on" then --has not been dug
+			minetest.swap_node(pos, {name = "carts:detectorrail", param2=node.param2})
+		end
+		mesecon.receptor_off(pos, mesecons_rules)
+	end
+end
+
+function carts:signal_detector_rail(pos)
+	local node = minetest.get_node(pos)
+	if minetest.get_item_group(node.name, "detector_rail") ~= 1 then
+		return
+	end
+
+	if node.name == "carts:detectorrail" then
+		minetest.swap_node(pos, {name = "carts:detectorrail_on", param2=node.param2})
+	end
+	mesecon.receptor_on(pos, mesecons_rules)
+	minetest.after(0.5, carts.turnoff_detector_rail, carts, pos)
+end
+
+carts:register_rail("carts:detectorrail", {
+	description = "Detector rail",
+	tiles = {
+		"carts_rail_dtc.png", "carts_rail_curved_dtc.png",
+		"carts_rail_t_junction_dtc.png", "carts_rail_crossing_dtc.png"
+	},
+	groups = carts:get_rail_groups({detector_rail = 1}),
+
+	mesecons = {receptor = {state = "off", rules = mesecons_rules}},
+})
+
+carts:register_rail("carts:detectorrail_on", {
+	description = "Detector rail ON (you hacker you)",
+	tiles = {
+		"carts_rail_dtc_on.png", "carts_rail_curved_dtc_on.png",
+		"carts_rail_t_junction_dtc_on.png", "carts_rail_crossing_dtc_on.png"
+	},
+	groups = carts:get_rail_groups({
+		detector_rail = 1, not_in_creative_inventory = 1
+	}),
+	drop = "carts:detectorrail",
+
+	mesecons = {receptor = {state = "on", rules = mesecons_rules}},
+})
+
+minetest.register_craft({
+	output = "carts:detectorrail 6",
+	recipe = {
+		{"default:steel_ingot", "mesecons:wire_00000000_off", "default:steel_ingot"},
+		{"default:steel_ingot", "group:stick", "default:steel_ingot"},
+		{"default:steel_ingot", "mesecons:wire_00000000_off", "default:steel_ingot"},
+	},
+})