make it use glasslike_framed_optional

init.lua

@@ -1,21 +1,19 @@
 local load_time_start = os.clock()
 
 local glass_list = {
-	["default:glass"] = {"default_glass.png", "connected_textures_glass_stripes.png"},
-	["default:obsidian_glass"] = {"default_obsidian_glass.png", "connected_textures_invisible.png"},
-
-	["moreblocks:iron_glass"] = {"moreblocks_iron_glass.png", "connected_textures_iron_glass_stripes.png"},
-	["moreblocks:coal_glass"] = {"moreblocks_coal_glass.png", "connected_textures_coal_glass_stripes.png"},
-	["moreblocks:clean_glass"] = {"moreblocks_clean_glass.png", "connected_textures_invisible.png"},
-	["moreblocks:trap_glass"] = {"moreblocks_trap_glass.png", "connected_textures_glass_stripes.png"},
-	["moreblocks:super_glow_glass"] = {"moreblocks_super_glow_glass.png", "connected_textures_glow_glass_stripes.png"},
-
-	["titanium:glass"] = {"titanium_glass.png", "connected_textures_titanium_glass_stripes.png"},
+	["moreblocks:iron_glass"] = "connected_textures_iron_glass_stripes.png",
+	["moreblocks:coal_glass"] = "connected_textures_coal_glass_stripes.png",
+	["moreblocks:clean_glass"] = "connected_textures_invisible.png",
+	["moreblocks:trap_glass"] = "connected_textures_glass_stripes.png",
+	["moreblocks:super_glow_glass"] = "connected_textures_glow_glass_stripes.png",
 }
 
 for node,img in pairs(glass_list) do
-	if minetest.registered_nodes[node] then
-		minetest.override_item(node, {tiles = img, drawtype = "glasslike_framed"})
+	local def = minetest.registered_nodes[node]
+	if def
+	and def.drawtype == "glasslike" then
+		def.tiles[2] = img
+		minetest.override_item(node, {tiles = def.tiles, drawtype = "glasslike_framed_optional"})
 	end
 end