feat: Implement combat and movement sound effects with looping footsteps

src/view/SoundManager.js

@@ -12,11 +12,15 @@ export class SoundManager {
                 'exploration': '/assets/music/ingame/Abandoned_Ruins.mp3'
             },
             sfx: {
-                'door_open': '/assets/sfx/opendoor.mp3'
+                'door_open': '/assets/sfx/opendoor.mp3',
+                'footsteps': '/assets/sfx/footsteps.mp3',
+                'sword': '/assets/sfx/sword1.mp3',
+                'arrow': '/assets/sfx/arrow.mp3'
             }
         };
 
         this.initialized = false;
+        this.activeLoops = new Map();
     }
 
     /**
@@ -112,4 +116,27 @@ export class SoundManager {
             // or log if needed
         });
     }
+
+    startLoop(key) {
+        if (this.isMuted) return;
+        if (this.activeLoops.has(key)) return; // Already playing
+
+        const url = this.assets.sfx[key];
+        if (!url) return;
+
+        const audio = new Audio(url);
+        audio.loop = true;
+        audio.volume = this.sfxVolume;
+        audio.play().catch(() => { });
+        this.activeLoops.set(key, audio);
+    }
+
+    stopLoop(key) {
+        const audio = this.activeLoops.get(key);
+        if (audio) {
+            audio.pause();
+            audio.currentTime = 0;
+            this.activeLoops.delete(key);
+        }
+    }
 }