Suppress building placeholder if preview image not available

changelog.txt

@@ -5,6 +5,7 @@ next
 - added localization support
 - added Spanish translation
 - skins are unregistered if their textures aren't cached
+- suppresses building placeholder if preview image isn't available
 
 
 v1.4

formspec.lua

@@ -62,7 +62,11 @@ function wardrobe.show_formspec(player, page)
 
 			formspec = formspec
 				.. "button_exit[" .. border_l .. "," .. addon+.5 ..";5,1;s:" .. s[1] .. ";" .. s[2] .. "]"
-				.. "image[" .. border_l+5 .. "," .. addon .. ";1,2;" .. preview .."]"
+
+			if wardrobe.cached_previews[s[1]] then
+				formspec = formspec
+					.. "image[" .. border_l+5 .. "," .. addon .. ";1,2;" .. preview .."]"
+			end
 
 			addon = addon + 2
 		end

init.lua

@@ -11,6 +11,9 @@ wardrobe.playerSkins = {}
 
 wardrobe.use_3d_armor = core.get_modpath("3d_armor") ~= nil and core.global_exists("armor")
 
+-- suppresses showing preview if not cached
+wardrobe.cached_previews = {}
+
 function wardrobe.log(lvl, msg)
 	if not msg then
 		msg = lvl
@@ -66,6 +69,11 @@ core.register_on_mods_loaded(function()
 			wardrobe.skinNames[skin] = nil
 			wardrobe.skin_count = wardrobe.skin_count-1
 		end
+
+		local preview = skin:gsub("%.png$", "-preview.png")
+		if cached_textures[preview] then
+			wardrobe.cached_previews[skin] = true
+		end
 	end
 
 	cached_textures = nil