Fix textures/font lifetimes

include/app/app.h

@@ -26,17 +26,26 @@ struct Element {
 };
 
 struct EImage : Element {
-  Animation animation;
+  int animation_id = -1;
 
-  EImage(Animation animation) : animation(std::move(animation)) {}
+  EImage(int animation_id) : animation_id(animation_id) {
+    animation_pool.use(animation_id);
+  }
+
+  ~EImage() {
+    if (animation_id != -1)
+      animation_pool.release(animation_id);
+  }
 
   Vec2<float> size(Window *window) override {
+    Animation &animation = *animation_pool[animation_id];
     if (animation.frames.empty())
       return {0, 0};
     return window->get_image_size(animation.frames[0]);
   }
 
   void render(Window &window, uint64_t abs_time) override {
+    Animation &animation = *animation_pool[animation_id];
     if (animation.frames.empty())
       return;
 
@@ -47,11 +56,21 @@ struct EImage : Element {
 
 struct EText : Element {
   Localization::Key key;
-  int font_id;
+  int font_id = -1;
+
+  ~EText() {
+    if (text_id != -1)
+      text_pool.release(text_id);
+    if (font_id != -1)
+      font_pool.release(font_id);
+  }
+
   Color color = {255, 255, 255, 255};
 
   EText(Localization::Key key, int font_id, Color color)
-      : key(key), font_id(font_id), color(color) {}
+      : key(key), font_id(font_id), color(color) {
+    font_pool.use(font_id);
+  }
 
   Vec2<float> size(Window *window) override {
     return window->get_text_size(text_id);
@@ -61,7 +80,7 @@ struct EText : Element {
     if (last_language != Localization::current_language || last_key != key || text_id == -1) {
       std::string localized_str = Localization::get(key);
       if (text_id != -1)
-        window.unload_text(text_id);
+        text_pool.release(text_id);
       text_id = window.create_text(font_id, localized_str.c_str(), localized_str.size(), color);
       last_language = Localization::current_language;
       last_key = key;
@@ -163,11 +182,11 @@ struct App {
     current_scene_id = scene_id;
   }
 
-  App(Vec2<float> size, const char *title, Animation loading_animation) {
+  App(Vec2<float> size, const char *title, int anim_loading) {
     window.update(size, title);
 #warning "Should try to center the loading image or scale it to fit the screen"
     Scene *loading_scene = new Scene{};
-    EImage *image = new EImage(loading_animation);
+    EImage *image = new EImage(anim_loading);
     int image_id = element_pool.acquire(image);
     loading_scene->add_element(image_id);
     current_scene_id = scene_pool.acquire(loading_scene);