Garbage Collection + Eslint/Docs approved.

src/battle-scene.ts

@@ -2732,6 +2732,28 @@ export default class BattleScene extends SceneBase {
     (window as any).gameInfo = gameInfo;
   }
 
+  /**
+   * This function retrieves the sprite and audio keys for active Pokemon.
+   * Active Pokemon include both enemy and player Pokemon of the current wave.
+   * @returns a string array of active sprite and audio keys that should not be deleted
+   */
+  getActiveKeys(): string[] {
+    const keys: string[] = [];
+    const playerParty = this.getParty();
+    playerParty.forEach(p => {
+      keys.push("pkmn__"+p.species.getSpriteId(p.gender === Gender.FEMALE, p.species.formIndex, p.shiny, p.variant));
+      keys.push("pkmn__"+p.species.getSpriteId(p.gender === Gender.FEMALE, p.species.formIndex, p.shiny, p.variant, true));
+      keys.push("cry/"+p.species.getCryKey(p.species.formIndex));
+    });
+    // enemyParty has to be operated on separately from playerParty because playerPokemon =/= enemyPokemon
+    const enemyParty = this.getEnemyParty();
+    enemyParty.forEach(p => {
+      keys.push(p.species.getSpriteKey(p.gender === Gender.FEMALE, p.species.formIndex, p.shiny, p.variant));
+      keys.push("cry/"+p.species.getCryKey(p.species.formIndex));
+    });
+    return keys;
+  }
+
   /**
    * Initialized the 2nd phase of the final boss (e.g. form-change for Eternatus)
    * @param pokemon The (enemy) pokemon

src/ui/egg-summary-ui-handler.ts

@@ -94,10 +94,26 @@ export default class EggSummaryUiHandler extends MessageUiHandler {
     // this.currentPokemonSprite.setVisible(false);
     // this.pokemonEggMovesContainer.setVisible(false);
     this.getUi().hideTooltip();
-    // TODO clear EggHatchData
+    const activeKeys = this.scene.getActiveKeys();
-    // TODO back sprites and extra sprites etc.
+    // Removing unnecessary sprites from animation manager
+    const animKeys = Object.keys(this.scene.anims["anims"]["entries"]);
+    animKeys.forEach(key => {
+      if (key.startsWith("pkmn__") && !activeKeys.includes(key)) {
+        this.scene.anims.remove(key);
+      }
+    });
+    // Removing unnecessary cries from audio cache
+    const audioKeys = Object.keys(this.scene.cache.audio.entries.entries);
+    audioKeys.forEach(key => {
+      if (key.startsWith("cry/") && !activeKeys.includes(key)) {
+        delete this.scene.cache.audio.entries.entries[key];
+      }
+    });
+    // Clears eggHatchData in EggSummaryUiHandler
+    this.eggHatchData.length = 0;
+    // Removes Pokemon icons in EggSummaryUiHandler
+    this.iconAnimHandler.removeAll();
     console.log("Egg Summary Handler cleared");
-
   }
 
   show(args: any[]): boolean {