Preload audio files

Audio files are preloaded.

src/core/AudioManager.ts

@@ -1,24 +1,39 @@
 import { Howl } from "howler";
 
 export class AudioManager {
+    soundFiles = [
+        { name: "soundtrack.ogg", src: "./assets/Audio/Musics/soundtrack.ogg" },
+        { name: "shot_orange.wav", src: "./assets/Audio/Sounds/shot_orange.wav" },
+        { name: "shot_green.wav", src: "./assets/Audio/Sounds/shot_green.wav" },
+        { name: "shot_blue.wav", src: "./assets/Audio/Sounds/shot_blue.wav" },
+        { name: "shot_enemy_weak.wav", src: "./assets/Audio/Sounds/shot_enemy_weak.wav" },
+        { name: "shot_enemy_strong.wav", src: "./assets/Audio/Sounds/shot_enemy_strong.wav" },
+        { name: "gethit.ogg", src: "./assets/Audio/Sounds/gethit.ogg" },
+        { name: "death.wav", src: "./assets/Audio/Sounds/death.wav" },
+    ];
+    sounds: { [key: string]: Howl } = {};
+
     constructor() {
+        this.preloadAudioFiles();
         this.playSoundtrack();
     }
-
-    playSoundtrack() {
-        const sound = new Howl({
-            src: ["./assets/Audio/Musics/soundtrack.ogg"],
-            loop: true,
-            volume: 0.05,
+    preloadAudioFiles(): void {
+        this.soundFiles.forEach((soundFile) => {
+            this.sounds[soundFile.name] = new Howl({
+                src: [soundFile.src],
+                preload: true,
+            });
         });
-        sound.play();
     }
-
-    playSound(soundName: string, soundVolume: number = 1) {
-        const sound = new Howl({
-            src: [`./assets/Audio/Sounds/${soundName}`],
-            volume: soundVolume,
-        });
+    playSoundtrack(): void {
+        const soundtrack = this.sounds["soundtrack.ogg"];
+        soundtrack.loop(true);
+        soundtrack.volume(0.05);
+        soundtrack.play();
+    }
+    playSound(soundName: string, soundVolume: number = 1): void {
+        const sound = this.sounds[soundName];
+        sound.volume(soundVolume);
         sound.play();
     }
 }