mods/ITEMS/mcl_maps/init.lua

@@ -147,12 +147,24 @@ function mcl_maps.load_map(id)
 	local texture = "mcl_maps_map_texture_" .. id .. ".tga"
 
 	if not loaded_maps[id] then
+		if not minetest.features.dynamic_add_media_table then
+			-- minetest.dynamic_add_media() blocks in
+			-- Minetest 5.3 and 5.4 until media loads
 			loaded_maps[id] = true
 			dynamic_add_media(map_textures_path .. texture, function() end)
+		else
+			-- minetest.dynamic_add_media() never blocks
+			-- in Minetest 5.5, callback runs after load
+			dynamic_add_media(map_textures_path .. texture, function()
+				loaded_maps[id] = true
+			end)
+		end
 	end
 
+	if loaded_maps[id] then
 		return texture
 	end
+end
 
 function mcl_maps.load_map_item(itemstack)
 	return mcl_maps.load_map(itemstack:get_meta():get_string("mcl_maps:id"))