feat: Introduce footstep audio effects with context activation and set camera rotation order.

src/Player.js

@@ -6,6 +6,7 @@ import { PointerLockControls } from 'three/examples/jsm/controls/PointerLockCont
 export class Player {
     constructor(camera, colliders) {
         this.camera = camera;
+        this.camera.rotation.order = 'YXZ'; // Standard FPS rotation order to prevent gimbal lock
         this.colliders = colliders;
 
         // Player stats
@@ -35,6 +36,14 @@ export class Player {
         this.battery = 100.0;
         this.baseDrain = 0.5; // Drain per second at base intensity
 
+        // Animation
+        this.headBobTimer = 0;
+        this.lastStepTime = 0;
+
+        // Audio
+        this.ctx = new (window.AudioContext || window.webkitAudioContext)();
+        this.audioEnabled = false;
+
         // Animation
         this.headBobTimer = 0;
 
@@ -59,6 +68,12 @@ export class Player {
 
     setupInput() {
         const onKeyDown = (event) => {
+            // Resume Audio Context on first interaction
+            if (this.ctx && this.ctx.state === 'suspended') {
+                this.ctx.resume();
+                this.audioEnabled = true;
+            }
+
             switch (event.code) {
                 case 'KeyW': this.moveForward = true; break;
                 case 'KeyA': this.moveLeft = true; break;
@@ -166,8 +181,21 @@ export class Player {
             }
         }
 
-        // Keep player on ground
+        // Keep player on ground (Base height)
-        this.camera.position.y = this.height;
+        const baseHeight = this.height;
+        playerPos.y = baseHeight;
+
+        // Audio Only Trigger
+        if (this.moveForward || this.moveBackward || this.moveLeft || this.moveRight) {
+            // Step every 0.6 seconds
+            this.lastStepTime += dt;
+            if (this.lastStepTime > 0.6) {
+                this.lastStepTime = 0;
+                this.playFootstep();
+            }
+        } else {
+            this.lastStepTime = 0.5; // Ready to step properly next time
+        }
 
         // Flashlight flicker effect (subtle) & Battery Logic
         if (this.flashlight && this.flashlightOn) {
@@ -216,4 +244,39 @@ export class Player {
             }
         }
     }
+
+    playFootstep() {
+        if (!this.ctx) return;
+
+        const t = this.ctx.currentTime;
+        const osc = this.ctx.createOscillator();
+        const gain = this.ctx.createGain();
+        const filter = this.ctx.createBiquadFilter();
+
+        // Noise buffer for texture
+        const bufferSize = this.ctx.sampleRate * 0.1; // 0.1s duration
+        const buffer = this.ctx.createBuffer(1, bufferSize, this.ctx.sampleRate);
+        const data = buffer.getChannelData(0);
+        for (let i = 0; i < bufferSize; i++) {
+            data[i] = (Math.random() * 2 - 1) * 0.5;
+        }
+        const noise = this.ctx.createBufferSource();
+        noise.buffer = buffer;
+
+        // Filter to make it sound dull (floor/carpet)
+        filter.type = 'lowpass';
+        filter.frequency.setValueAtTime(400, t); // Low muffled thud
+
+        // Envelope
+        gain.gain.setValueAtTime(0.3, t);
+        gain.gain.exponentialRampToValueAtTime(0.01, t + 0.1);
+
+        // Connect
+        noise.connect(filter);
+        filter.connect(gain);
+        gain.connect(this.ctx.destination);
+
+        noise.start();
+        noise.stop(t + 0.1);
+    }
 }