Add an induction transmitter

This node makes the signal goes two nodes forward instead of one

moremesecons_induction_transmitter/depends.txt

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+mesecons

moremesecons_induction_transmitter/init.lua

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+local function induction_transmitter_get_input_rules(node)
+	-- All horizontal rules, except the output
+	local rules = {
+		{x=-1,y=0,z=0},
+		{x=1,y=0,z=0},
+		{x=0,y=0,z=-1},
+		{x=0,y=0,z=1}
+	}
+	for i, r in ipairs(rules) do
+		if vector.equals(r, minetest.facedir_to_dir(node.param2)) then
+			table.remove(rules, i)
+		end
+	end
+	return rules
+end
+
+local function induction_transmitter_get_output_rules(node)
+	return {vector.multiply(minetest.facedir_to_dir(node.param2), 2)}
+end
+
+local function induction_transmitter_get_virtual_output_rules(node)
+	return {minetest.facedir_to_dir(node.param2)}
+end
+
+local function act(pos, node, state)
+	minetest.swap_node(pos, {name = "moremesecons_induction_transmitter:induction_transmitter_"..state, param2 = node.param2})
+
+	local dir = minetest.facedir_to_dir(node.param2)
+	local target_pos = vector.add(pos, vector.multiply(dir, 2))
+	local target_node = minetest.get_node(target_pos)
+	if mesecon.is_effector(target_node.name) then
+		-- Switch on an aside node, so it sends a signal to the target node
+		local aside_rule = mesecon.effector_get_rules(target_node)[1]
+		if not aside_rule then
+			return
+		end
+		mesecon["receptor_"..state](vector.add(target_pos, aside_rule), {vector.multiply(aside_rule, -1)})
+	elseif mesecon.is_conductor(target_node.name) then
+		-- Switch on the conductor itself
+		mesecon["receptor_"..state](target_pos, mesecon.conductor_get_rules(target_node))
+	end
+end
+
+mesecon.register_node("moremesecons_induction_transmitter:induction_transmitter", {
+	description = "Induction Transmitter",
+	drawtype = "nodebox",
+	paramtype = "light",
+	paramtype2 = "facedir",
+	node_box = {
+		type = "fixed",
+		fixed = {
+			{-0.5, -0.5, 0.125, 0.5, 0.5, 0.5},
+			{-0.375, -0.375, -0.1875, 0.375, 0.375, 0.125},
+			{-0.25, -0.25, -0.5, 0.25, 0.25, -0.1875},
+		}
+	},
+	selection_box = {
+		type = "fixed",
+		fixed = {
+			{-0.5, -0.5, 0.125, 0.5, 0.5, 0.5},
+			{-0.375, -0.375, -0.1875, 0.375, 0.375, 0.125},
+			{-0.25, -0.25, -0.5, 0.25, 0.25, -0.1875},
+		},
+	},
+}, {
+	tiles = {"default_mese_block.png"},
+	groups = {cracky = 3},
+	mesecons = {
+		receptor = {
+			state = mesecon.state.off,
+			rules = induction_transmitter_get_output_rules
+		},
+		effector = {
+			rules = induction_transmitter_get_input_rules,
+			action_on = function(pos, node)
+				act(pos, node, "on")
+			end
+		}
+	}
+}, {
+	light_source = 5,
+	tiles = {"default_mese_block.png^[brighten"},
+	groups = {cracky = 3, not_in_creative_inventory = 1},
+	mesecons = {
+		receptor = {
+			state = mesecon.state.on,
+			rules = induction_transmitter_get_output_rules
+		},
+		effector = {
+			rules = induction_transmitter_get_input_rules,
+			action_off = function(pos, node)
+				act(pos, node, "off")
+			end
+		}
+	}
+})