convert bathroom tiles to param2 color

side effect:

I added a third shade of the formerly-white checker background
that alternates with the colored overlay.  The colored overlay
follows the standard full Unified Dyes palette.

homedecor/bathroom_furniture.lua

@@ -1,43 +1,53 @@
 
 local S = homedecor_i18n.gettext
 
-local bathroom_tile_colors = {
-	{ "1",       S("white/grey"),       "#c0c0c0:200" },
-	{ "2",       S("white/dark grey"),  "#404040:150" },
-	{ "3",       S("white/black"),      "#000000:200" },
-	{ "4",       S("black/dark grey"),  ""            },
-	{ "red",     S("white/red"),        "#d00000:150" },
-	{ "green",   S("white/green"),      "#00d000:150" },
-	{ "blue",    S("white/blue"),       "#0000d0:150" },
-	{ "yellow",  S("white/yellow"),     "#ffff00:150" },
-	{ "tan",     S("white/tan"),        "#ceaf42:150" }
-}
-
-for _, c in ipairs(bathroom_tile_colors) do
-	local color, shade, hue = unpack(c)
-
-	local coloredtile = "homedecor_bathroom_tiles_bg.png^(homedecor_bathroom_tiles_fg.png^[colorize:"..hue..")"
-
-	if color == "4" then
-		coloredtile = "(homedecor_bathroom_tiles_bg.png^[colorize:#000000:75)"..
-					  "^(homedecor_bathroom_tiles_fg.png^[colorize:#000000:200)"
-	end
-
-	minetest.register_node("homedecor:tiles_"..color, {
-		description = S("Bathroom/kitchen tiles (@1)", shade),
+minetest.register_node("homedecor:bathroom_tiles_dark", {
+	description = S("Bathroom/kitchen tiles (dark)"),
 	tiles = {
-			coloredtile,
-			coloredtile,
-			coloredtile,
-			coloredtile,
-			"("..coloredtile..")^[transformR90",
-			"("..coloredtile..")^[transformR90"
+		{ name = "homedecor_bathroom_tiles_bg.png", color = 0xff606060 },
+		"homedecor_bathroom_tiles_bg.png"
 	},
-		groups = {cracky=3},
+	drawtype = "mesh",
+	mesh = "homedecor_block_with_overlay.obj",
 	paramtype = "light",
+	paramtype2 = "color",
+	palette = "unifieddyes_palette.png",
+	groups = {cracky=3, ud_param2_colorable = 1},
 	sounds = default.node_sound_stone_defaults(),
-	})
-end
+	after_dig_node = unifieddyes.after_dig_node
+})
+
+minetest.register_node("homedecor:bathroom_tiles_medium", {
+	description = S("Bathroom/kitchen tiles (medium)"),
+	tiles = {
+		{ name = "homedecor_bathroom_tiles_bg.png", color = 0xffc0c0c0 },
+		"homedecor_bathroom_tiles_fg.png"
+	},
+	drawtype = "mesh",
+	mesh = "homedecor_block_with_overlay.obj",
+	paramtype = "light",
+	paramtype2 = "color",
+	palette = "unifieddyes_palette.png",
+	groups = {cracky=3, ud_param2_colorable = 1},
+	sounds = default.node_sound_stone_defaults(),
+	after_dig_node = unifieddyes.after_dig_node
+})
+
+minetest.register_node("homedecor:bathroom_tiles_light", {
+	description = S("Bathroom/kitchen tiles (light)"),
+	tiles = {
+		{ name = "homedecor_bathroom_tiles_bg.png", color = 0xffffffff },
+		"homedecor_bathroom_tiles_fg.png"
+	},
+	drawtype = "mesh",
+	mesh = "homedecor_block_with_overlay.obj",
+	paramtype = "light",
+	paramtype2 = "color",
+	palette = "unifieddyes_palette.png",
+	groups = {cracky=3, ud_param2_colorable = 1},
+	sounds = default.node_sound_stone_defaults(),
+	after_dig_node = unifieddyes.after_dig_node
+})
 
 local tr_cbox = {
 	type = "fixed",
@@ -102,3 +112,56 @@ homedecor.register("medicine_cabinet_open", {
 		minetest.swap_node(pos, node)
 	end,
 })
+
+-- convert old static nodes
+
+homedecor.old_static_bathroom_tiles = {
+	"homedecor:tiles_1",
+	"homedecor:tiles_2",
+	"homedecor:tiles_3",
+	"homedecor:tiles_4",
+	"homedecor:tiles_red",
+	"homedecor:tiles_tan",
+	"homedecor:tiles_yellow",
+	"homedecor:tiles_green",
+	"homedecor:tiles_blue"
+}
+
+local old_to_color = {
+	"light_grey",
+	"grey",
+	"black",
+	"black"
+}
+
+minetest.register_lbm({
+	name = "homedecor:convert_bathroom_tiles",
+	label = "Convert bathroom tiles to use param2 color",
+	run_at_every_load = true,
+	nodenames = homedecor.old_static_bathroom_tiles,
+	action = function(pos, node)
+		local name = node.name
+		local newname = "homedecor:bathroom_tiles_light"
+		local a,b = string.find(node.name, "_")
+		local color = string.sub(node.name, a + 1)
+
+		if color == "tan" then
+			color = "yellow_s50"
+		elseif color == "1" or color == "2" or color == "3" or color == "4" then
+			if color == "4" then
+				newname = "homedecor:bathroom_tiles_medium"
+			end
+			color = old_to_color[tonumber(color)]
+		elseif color ~= "yellow" then
+			color = color.."_s50"
+		end
+
+		local paletteidx = unifieddyes.getpaletteidx("unifieddyes:"..color)
+
+		print(node.name.." --> "..newname, color.." ("..dump(paletteidx)..")")
+
+		minetest.set_node(pos, { name = newname, param2 = paletteidx })
+		local meta = minetest.get_meta(pos)
+		meta:set_string("dye", "unifieddyes:"..color)
+	end
+})

homedecor/models/homedecor_block_with_overlay.obj

@@ -0,0 +1,44 @@
+# Blender v2.72 (sub 0) OBJ File: 'unifiedbricks_brick_block.blend'
+# www.blender.org
+o Cube
+v 0.496092 0.496092 0.496092
+v 0.496092 0.496092 -0.496092
+v -0.496092 0.496092 -0.496092
+v -0.496092 0.496092 0.496092
+v 0.496092 -0.496092 0.496092
+v 0.496092 -0.496092 -0.496092
+v -0.496092 -0.496092 -0.496092
+v -0.496092 -0.496092 0.496092
+v 0.499750 0.499750 0.499750
+v 0.499750 0.499750 -0.499750
+v -0.499750 0.499750 -0.499750
+v -0.499750 0.499750 0.499750
+v 0.499750 -0.499750 0.499750
+v 0.499750 -0.499750 -0.499750
+v -0.499750 -0.499750 -0.499750
+v -0.499750 -0.499750 0.499750
+vt 1.000000 0.000000
+vt 1.000000 1.000000
+vt 0.000000 1.000000
+vt 0.000000 0.000000
+vn 0.000000 -1.000000 0.000000
+vn -1.000000 0.000000 0.000000
+vn 0.000000 1.000000 0.000000
+vn 1.000000 0.000000 0.000000
+vn 0.000000 0.000000 -1.000000
+vn 0.000000 0.000000 1.000000
+g Cube_Cube_base
+s off
+f 8/1/1 7/2/1 6/3/1 5/4/1
+f 4/2/2 3/3/2 7/4/2 8/1/2
+f 1/3/3 2/4/3 3/1/3 4/2/3
+f 2/2/4 1/3/4 5/4/4 6/1/4
+f 3/2/5 2/3/5 6/4/5 7/1/5
+f 1/2/6 4/3/6 8/4/6 5/1/6
+g Cube_Cube_overlay
+f 16/1/1 15/2/1 14/3/1 13/4/1
+f 12/2/2 11/3/2 15/4/2 16/1/2
+f 9/3/3 10/4/3 11/1/3 12/2/3
+f 10/2/4 9/3/4 13/4/4 14/1/4
+f 11/2/5 10/3/5 14/4/5 15/1/5
+f 9/2/6 12/3/6 16/4/6 13/1/6