small ui changes

src/assets/Assets.cpp

@@ -85,28 +85,3 @@ UiDocument* Assets::getLayout(std::string name) const {
 void Assets::store(UiDocument* layout, std::string name) {
 	layouts[name] = std::shared_ptr<UiDocument>(layout);
 }
-
-void Assets::extend(const Assets& assets) {
-    for (auto entry : assets.textures) {
-        textures[entry.first] = entry.second;
-    }
-    for (auto entry : assets.shaders) {
-        shaders[entry.first] = entry.second;
-    }
-    for (auto entry : assets.fonts) {
-        fonts[entry.first] = entry.second;
-    }
-    for (auto entry : assets.atlases) {
-        atlases[entry.first] = entry.second;
-    }
-	for (auto entry : assets.layouts) {
-		layouts[entry.first] = entry.second;
-	}
-	for (auto entry : assets.sounds) {
-		sounds[entry.first] = entry.second;
-	}
-    animations.clear();
-	for (auto entry : assets.animations) {
-		animations.emplace_back(entry);
-	}
-}

src/assets/Assets.h

@@ -34,7 +34,10 @@ class Assets {
 	std::unordered_map<std::string, std::shared_ptr<audio::Sound>> sounds;
 	std::vector<TextureAnimation> animations;
 public:
+    Assets() {}
+    Assets(const Assets&) = delete;
 	~Assets();
+    
 	Texture* getTexture(std::string name) const;
 	void store(Texture* texture, std::string name);
 
@@ -55,8 +58,6 @@ public:
 
 	UiDocument* getLayout(std::string name) const;
 	void store(UiDocument* layout, std::string name);
-
-    void extend(const Assets& assets);
 };
 
 #endif /* ASSETS_ASSETS_H_ */

src/assets/assetload_funcs.cpp

@@ -182,6 +182,9 @@ assetload::postfunc assetload::sound(
         baseSound->variants.emplace_back(audio::load_sound(variantFile, keepPCM));
     }
 
+    if (baseSound == nullptr) {
+        throw std::runtime_error("could not to find sound: " + file);
+    }
     auto sound = baseSound.release();
     return [=](auto assets) {
         assets->store(sound, name);