minetest_returnmirror/init.lua

returnmirror = {}
returnmirror.cost = 100

minetest.register_tool("returnmirror:returnmirror", {
	description = "Mirror of Returning",
	stack_max = 1,
	inventory_image = "returnmirror_returnmirror.png",
	wield_image = "returnmirror_returnmirror.png",
	tool_capabilities = {},
	on_use = function(itemstack, user, pointed_thing)
		local pos_string = itemstack:get_metadata()
		local pos = minetest.string_to_pos(pos_string)
		if pos ~= nil then
			if mana.subtract(user:get_player_name(), returnmirror.cost) then
				user:setpos(pos)
			end
		end
	end,
	on_place = function(itemstack, placer, pointed_thing)
		itemstack:set_metadata(minetest.pos_to_string(placer:getpos()))
		return itemstack
	end
})