mesecons/mesecons_doors/init.lua

-- Modified, from minetest_game/mods/doors/init.lua
local function on_rightclick(pos, dir, check_name, replace, replace_dir, params)
	pos.y = pos.y + dir
	if minetest.get_node(pos).name ~= check_name then
		return
	end
	local p2 = minetest.get_node(pos).param2
	p2 = params[p2 + 1]

	minetest.swap_node(pos, {name = replace_dir, param2 = p2})

	pos.y = pos.y - dir
	minetest.swap_node(pos, {name = replace, param2 = p2})

	if (minetest.get_meta(pos):get_int("right") ~= 0) == (params[1] ~= 3) then
		minetest.sound_play("doors_door_close", { pos = pos, gain = 0.3, max_hear_distance = 10 }, true)
	else
		minetest.sound_play("doors_door_open", { pos = pos, gain = 0.3, max_hear_distance = 10 }, true)
	end
end

local function meseconify_door(name)
	if minetest.registered_items[name .. "_b_1"] then
		-- old style double-node doors
		local function toggle_state1 (pos)
			on_rightclick(pos, 1, name.."_t_1", name.."_b_2", name.."_t_2", {1,2,3,0})
		end

		local function toggle_state2 (pos)
			on_rightclick(pos, 1, name.."_t_2", name.."_b_1", name.."_t_1", {3,0,1,2})
		end

		minetest.override_item(name.."_b_1", {
			mesecons = {effector = {
				action_on = toggle_state1,
				action_off = toggle_state1,
				rules = mesecon.rules.pplate
			}}
		})

		minetest.override_item(name.."_b_2", {
			mesecons = {effector = {
				action_on = toggle_state2,
				action_off = toggle_state2,
				rules = mesecon.rules.pplate
			}}
		})
	elseif minetest.registered_items[name .. "_a"] then
		-- new style mesh node based doors
		local override = {
			mesecons = {effector = {
				action_on = function(pos)
					local door = doors.get(pos)
					if door then
						door:open()
					end
				end,
				action_off = function(pos)
					local door = doors.get(pos)
					if door then
						door:close()
					end
				end,
				rules = mesecon.rules.pplate
			}}
		}
		minetest.override_item(name .. "_a", override)
		minetest.override_item(name .. "_b", override)
		if minetest.registered_items[name .. "_c"] then
			minetest.override_item(name .. "_c", override)
			minetest.override_item(name .. "_d", override)
		end
	end
end

local doors_list = {
	"doors:door_wood",
	"doors:door_steel",
	"doors:door_glass",
	"doors:door_obsidian_glass",
	"xpanes:door_steel_bar",
}
for i=1,#doors_list do meseconify_door(doors_list[i]) end

-- Trapdoor
local function trapdoor_switch(name)
	return function(pos, node)
		local state = minetest.get_meta(pos):get_int("state")
		if state == 1 then
			minetest.sound_play("doors_door_close", { pos = pos, gain = 0.3, max_hear_distance = 10 }, true)
			minetest.set_node(pos, {name=name, param2 = node.param2})
		else
			minetest.sound_play("doors_door_open", { pos = pos, gain = 0.3, max_hear_distance = 10 }, true)
			minetest.set_node(pos, {name=name.."_open", param2 = node.param2})
		end
		minetest.get_meta(pos):set_int("state", state == 1 and 0 or 1)
	end
end

local function meseconify_trapdoor(name)
	local override
	if doors and doors.get then
		override = {
			mesecons = {effector = {
				action_on = function(pos)
					local door = doors.get(pos)
					if door then
						door:open()
					end
				end,
				action_off = function(pos)
					local door = doors.get(pos)
					if door then
						door:close()
					end
				end,
			}},
		}
	else
		override = {
			mesecons = {effector = {
				action_on = trapdoor_switch(name),
				action_off = trapdoor_switch(name)
			}},
		}
	end

	if minetest.registered_items[name] then
		minetest.override_item(name, override)
		minetest.override_item(name.."_open", override)
	end
end

local trapdoors_list = {
	"doors:trapdoor",
	"doors:trapdoor_steel",
	"xpanes:trapdoor_steel_bar"
}
for i=1,#trapdoors_list do meseconify_trapdoor(trapdoors_list[i]) end