Add player death mechanics with enemy freeze, projectile cleanup, and event-driven state management

js/entities/Player.js

@@ -188,6 +188,7 @@ export class Player {
     }
 
     this.scene.sound.play('sfx-death', { volume: 0.6 });
+    this.scene.events.emit('player-died');
 
     this.hp = this.stats.maxHp;
     this.invincible = true;
@@ -229,6 +230,7 @@ export class Player {
       onComplete: () => {
         this.sprite.setAlpha(1);
         this.invincible = false;
+        this.scene.events.emit('player-respawned');
       },
     });
   }

js/scenes/GameScene.js

@@ -85,6 +85,8 @@ export class GameScene extends Phaser.Scene {
 
     this.events.on('wave-start', () => this.sound.play('sfx-enemy-wave', { volume: 0.5 }));
     this.events.on('zone-waves-complete', () => this._startZoneExit());
+    this.events.on('player-died', () => this._onPlayerDied());
+    this.events.on('player-respawned', () => { this.waveManager.enemiesFrozen = false; });
 
     this.reticle = new Reticle(this);
 
@@ -269,6 +271,27 @@ export class GameScene extends Phaser.Scene {
     });
   }
 
+  _onPlayerDied() {
+    const W = this.scale.width;
+    const H = this.scale.height;
+    const cx = W / 2;
+    const cy = H / 2;
+
+    // Destroy all enemy projectiles
+    this._enemyProjectiles.forEach(p => { if (p?.active) p.destroy(); });
+    this._enemyProjectiles = [];
+
+    // Destroy enemies within 150px of screen centre
+    this.waveManager.enemies.forEach(e => {
+      if (e.active && Phaser.Math.Distance.Between(e.x, e.y, cx, cy) < 150) {
+        e.takeDamage(99999);
+      }
+    });
+
+    // Freeze remaining enemies for the duration of invincibility
+    this.waveManager.enemiesFrozen = true;
+  }
+
   _checkBulletHits() {
     const bullets = this.player.bullets.getChildren();
     const enemies = this.waveManager.enemies;
@@ -490,7 +513,17 @@ export class GameScene extends Phaser.Scene {
   }
 
   shutdown() {
-    this.events.removeAllListeners();
+    // Remove only our custom listeners — removeAllListeners() would also strip
+    // Phaser's internal scene lifecycle listeners and corrupt the next create().
+    this.events.off('enemy-killed');
+    this.events.off('enemy-projectile-spawned');
+    this.events.off('level-up');
+    this.events.off('game-over');
+    this.events.off('victory');
+    this.events.off('wave-start');
+    this.events.off('zone-waves-complete');
+    this.events.off('player-died');
+    this.events.off('player-respawned');
     this._barrierColliders?.forEach(c => c.destroy());
     this.reticle?.destroy();
     this.barrierManager?.destroy();

js/systems/WaveManager.js

@@ -16,6 +16,7 @@ export class WaveManager {
     this.waveIndex = 0;
     this.enemies = [];
     this.active = false;
+    this.enemiesFrozen = false;
     this.spriteGroup = scene.physics.add.group();
   }
 
@@ -70,8 +71,12 @@ export class WaveManager {
     // Prune dead enemies
     this.enemies = this.enemies.filter(e => e.active);
 
-    // Update living enemies
+    // Update living enemies (skip when frozen after player death)
-    this.enemies.forEach(e => e.update(delta));
+    if (this.enemiesFrozen) {
+      this.enemies.forEach(e => { if (e.sprite?.body) e.sprite.body.setVelocity(0, 0); });
+    } else {
+      this.enemies.forEach(e => e.update(delta));
+    }
 
     // Check wave clear
     if (this.enemies.length === 0) {

js/ui/HUD.js

@@ -72,6 +72,8 @@ export class HUD {
   }
 
   destroy() {
+    this.scene.events.off('wave-start');
+    this.scene.events.off('zone-clear');
     [this._hpLabel, this._hpBg, this._hpFill, this._xpBg, this._xpFill, this._xpLabel, this._zoneText, ...this._lifeIcons]
       .forEach(o => o?.destroy());
   }