local function rotate_on_rightclick(pos, node, player, itemstack, pointed_thing)
	local node_name = minetest.get_node(pos).name
	local rot = (node_name:sub(#node_name,#node_name) + 1 )  % 4
	node.name = node_name:sub(1,-2) .. rot
	minetest.swap_node(pos, node)
end

local rotations={0,1,2,3}

for _,v in pairs(rotations) do

	local tile = {"yl_decals_crack_01.png^[transform"..v}

	minetest.register_node("yl_decals:crack_01_"..v, {
		description = "Crack Double",
		paramtype = "light",
		sunlight_propagates = true,
		paramtype2 = "wallmounted",
		drawtype = "signlike",
		tiles = tile,
		walkable     = false,
		pointable    = true,
		diggable     = false,
		buildable_to = true,
		on_rightclick = rotate_on_rightclick,
		groups = {not_in_creative_inventory = 1},
	})

end

for _,v in pairs(rotations) do

	local tile = {"yl_decals_crack_02.png^[transform"..v}

	minetest.register_node("yl_decals:crack_02_"..v, {
		description = "Crack Double",
		paramtype = "light",
		sunlight_propagates = true,
		paramtype2 = "wallmounted",
		drawtype = "signlike",
		tiles = tile,
		walkable     = false,
		pointable    = true,
		diggable     = false,
		buildable_to = true,
		on_rightclick = rotate_on_rightclick,
		groups = {not_in_creative_inventory = 1},
	})

end

for _,v in pairs(rotations) do

	local tile = {"yl_decals_crack_03.png^[transform"..v}

	minetest.register_node("yl_decals:crack_03_"..v, {
		description = "Crack Double",
		paramtype = "light",
		sunlight_propagates = true,
		paramtype2 = "wallmounted",
		drawtype = "signlike",
		tiles = tile,
		walkable     = false,
		pointable    = true,
		diggable     = false,
		buildable_to = true,
		on_rightclick = rotate_on_rightclick,
		groups = {not_in_creative_inventory = 1},
	})

end