diff --git "a/index.html" "b/index.html"
--- "a/index.html"
+++ "b/index.html"
@@ -1,1569 +1,1574 @@
 <!DOCTYPE html>
 <html lang="en">
 <head>
-    <meta charset="UTF-8">
-    <meta name="viewport" content="width=device-width, initial-scale=1.0">
-    <title>Sky Adventure - Plane Shooting Game</title>
-    <script src="https://cdn.tailwindcss.com"></script>
-    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
-    <style>
-        body {
-            overflow: hidden;
-            touch-action: none;
-            margin: 0;
-            padding: 0;
-        }
-        #gameCanvas {
-            display: block;
-            background: linear-gradient(to bottom, #1e3c72 0%, #2a5298 100%);
-        }
-        .game-overlay {
-            position: absolute;
-            top: 0;
-            left: 0;
-            width: 100%;
-            height: 100%;
-            pointer-events: none;
-        }
-        .cloud {
-            position: absolute;
-            background-color: rgba(255, 255, 255, 0.8);
-            border-radius: 50%;
-        }
-        @keyframes float {
-            0% { transform: translateY(0px); }
-            50% { transform: translateY(-10px); }
-            100% { transform: translateY(0px); }
-        }
-        .plane {
-            animation: float 2s ease-in-out infinite;
-        }
-        .star {
-            position: absolute;
-            color: gold;
-            text-shadow: 0 0 10px yellow;
-            animation: twinkle 1s ease-in-out infinite alternate;
-        }
-        @keyframes twinkle {
-            from { opacity: 0.7; transform: scale(0.9); }
-            to { opacity: 1; transform: scale(1.1); }
-        }
-        .obstacle {
-            position: absolute;
-            background-color: #555;
-            border-radius: 5px;
-        }
-        .explosion {
-            position: absolute;
-            width: 60px;
-            height: 60px;
-            background: radial-gradient(circle, rgba(255,100,0,0.8) 0%, rgba(255,200,0,0.6) 50%, rgba(255,255,255,0) 70%);
-            border-radius: 50%;
-            animation: explode 0.5s ease-out forwards;
-        }
-        @keyframes explode {
-            0% { transform: scale(0); opacity: 1; }
-            100% { transform: scale(2); opacity: 0; }
-        }
-        .control-btn {
-            position: absolute;
-            width: 60px;
-            height: 60px;
-            background: rgba(255, 255, 255, 0.2);
-            border-radius: 50%;
-            display: flex;
-            align-items: center;
-            justify-content: center;
-            font-size: 24px;
-            color: white;
-            pointer-events: auto;
-            user-select: none;
-            -webkit-tap-highlight-color: transparent;
-        }
-        .control-btn:active {
-            background: rgba(255, 255, 255, 0.4);
-            transform: scale(0.95);
-        }
-        #leftBtn {
-            bottom: 30px;
-            left: 30px;
-        }
-        #rightBtn {
-            bottom: 30px;
-            left: 110px;
-        }
-        #upBtn {
-            bottom: 100px;
-            right: 30px;
-        }
-        #downBtn {
-            bottom: 30px;
-            right: 30px;
-        }
-        #fireBtn {
-            bottom: 170px;
-            left: 30px;
-        }
-        .bullet {
-            position: absolute;
-            background: linear-gradient(to right, #ff0, #f80);
-            border-radius: 50%;
-        }
-        .enemy-bullet {
-            position: absolute;
-            background: linear-gradient(to right, #f00, #800);
-            border-radius: 50%;
-        }
-        .debris {
-            position: absolute;
-            background-color: #777;
-            border-radius: 2px;
-        }
-        .powerup {
-            position: absolute;
-            width: 40px;
-            height: 40px;
-            border-radius: 50%;
-            display: flex;
-            align-items: center;
-            justify-content: center;
-            font-size: 20px;
-            text-shadow: 0 0 5px white;
-        }
-        .shield {
-            position: absolute;
-            border-radius: 50%;
-            border: 3px solid rgba(0, 204, 255, 0.6);
-            pointer-events: none;
-        }
-        .homing-missile {
-            position: absolute;
-            background: linear-gradient(to bottom, #ff5f5f, #ff0000);
-            border-radius: 50% 50% 0 0;
-            transform-origin: center bottom;
-        }
-        @keyframes pulse {
-            0% { transform: scale(1); opacity: 0.9; }
-            50% { transform: scale(1.1); opacity: 1; }
-            100% { transform: scale(1); opacity: 0.9; }
-        }
-        .powerup-effect {
-            position: absolute;
-            pointer-events: none;
-            animation: pulse 1.5s infinite;
-        }
-        .joystick {
-            position: absolute;
-            width: 100px;
-            height: 100px;
-            background: rgba(255, 255, 255, 0.2);
-            border-radius: 50%;
-            bottom: 30px;
-            left: 30px;
-            pointer-events: auto;
-            display: none;
-        }
-        .joystick-handle {
-            position: absolute;
-            width: 40px;
-            height: 40px;
-            background: rgba(255, 255, 255, 0.4);
-            border-radius: 50%;
-            top: 30px;
-            left: 30px;
-        }
-        .boss-health-bar {
-            position: absolute;
-            top: 10px;
-            left: 50%;
-            transform: translateX(-50%);
-            width: 200px;
-            height: 20px;
-            background: rgba(0, 0, 0, 0.5);
-            border-radius: 10px;
-            overflow: hidden;
-        }
-        .boss-health-fill {
-            height: 100%;
-            background: linear-gradient(to right, #ff0000, #ff9900);
-            width: 100%;
-        }
-    </style>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>Sky Adventure - Plane Shooting Game</title>
+  <script src="https://cdn.tailwindcss.com"></script>
+  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css">
+  <style>
+    body {
+      overflow: hidden;
+      touch-action: none;
+      margin: 0;
+      padding: 0;
+    }
+    #gameCanvas {
+      display: block;
+      background: linear-gradient(to bottom, #1e3c72 0%, #2a5298 100%);
+    }
+    .game-overlay {
+      position: absolute;
+      top: 0;
+      left: 0;
+      width: 100%;
+      height: 100%;
+      pointer-events: none;
+    }
+    .cloud {
+      position: absolute;
+      background-color: rgba(255, 255, 255, 0.8);
+      border-radius: 50%;
+    }
+    @keyframes float {
+      0% { transform: translateY(0px); }
+      50% { transform: translateY(-10px); }
+      100% { transform: translateY(0px); }
+    }
+    .plane {
+      animation: float 2s ease-in-out infinite;
+    }
+    .star {
+      position: absolute;
+      color: gold;
+      text-shadow: 0 0 10px yellow;
+      animation: twinkle 1s ease-in-out infinite alternate;
+    }
+    @keyframes twinkle {
+      from { opacity: 0.7; transform: scale(0.9); }
+      to { opacity: 1; transform: scale(1.1); }
+    }
+    .obstacle {
+      position: absolute;
+      background-color: #555;
+      border-radius: 5px;
+    }
+    .explosion {
+      position: absolute;
+      width: 60px;
+      height: 60px;
+      background: radial-gradient(circle, rgba(255,100,0,0.8) 0%, rgba(255,200,0,0.6) 50%, rgba(255,255,255,0) 70%);
+      border-radius: 50%;
+      animation: explode 0.5s ease-out forwards;
+    }
+    @keyframes explode {
+      0% { transform: scale(0); opacity: 1; }
+      100% { transform: scale(2); opacity: 0; }
+    }
+    .control-btn {
+      position: absolute;
+      width: 60px;
+      height: 60px;
+      background: rgba(255, 255, 255, 0.2);
+      border-radius: 50%;
+      display: flex;
+      align-items: center;
+      justify-content: center;
+      font-size: 24px;
+      color: white;
+      pointer-events: auto;
+      user-select: none;
+      -webkit-tap-highlight-color: transparent;
+    }
+    .control-btn:active {
+      background: rgba(255, 255, 255, 0.4);
+      transform: scale(0.95);
+    }
+    #leftBtn {
+      bottom: 30px;
+      left: 30px;
+    }
+    #rightBtn {
+      bottom: 30px;
+      left: 110px;
+    }
+    #upBtn {
+      bottom: 100px;
+      right: 30px;
+    }
+    #downBtn {
+      bottom: 30px;
+      right: 30px;
+    }
+    #fireBtn {
+      bottom: 170px;
+      left: 30px;
+    }
+    .bullet {
+      position: absolute;
+      background: linear-gradient(to right, #ff0, #f80);
+      border-radius: 50%;
+    }
+    .enemy-bullet {
+      position: absolute;
+      background: linear-gradient(to right, #f00, #800);
+      border-radius: 50%;
+    }
+    .debris {
+      position: absolute;
+      background-color: #777;
+      border-radius: 2px;
+    }
+    .powerup {
+      position: absolute;
+      width: 40px;
+      height: 40px;
+      border-radius: 50%;
+      display: flex;
+      align-items: center;
+      justify-content: center;
+      font-size: 20px;
+      text-shadow: 0 0 5px white;
+    }
+    .shield {
+      position: absolute;
+      border-radius: 50%;
+      border: 3px solid rgba(0, 204, 255, 0.6);
+      pointer-events: none;
+    }
+    .homing-missile {
+      position: absolute;
+      background: linear-gradient(to bottom, #ff5f5f, #ff0000);
+      border-radius: 50% 50% 0 0;
+      transform-origin: center bottom;
+    }
+    @keyframes pulse {
+      0% { transform: scale(1); opacity: 0.9; }
+      50% { transform: scale(1.1); opacity: 1; }
+      100% { transform: scale(1); opacity: 0.9; }
+    }
+    .powerup-effect {
+      position: absolute;
+      pointer-events: none;
+      animation: pulse 1.5s infinite;
+    }
+    .joystick {
+      position: absolute;
+      width: 100px;
+      height: 100px;
+      background: rgba(255, 255, 255, 0.2);
+      border-radius: 50%;
+      bottom: 30px;
+      left: 30px;
+      pointer-events: auto;
+      display: none;
+    }
+    .joystick-handle {
+      position: absolute;
+      width: 40px;
+      height: 40px;
+      background: rgba(255, 255, 255, 0.4);
+      border-radius: 50%;
+      top: 30px;
+      left: 30px;
+    }
+    .boss-health-bar {
+      position: absolute;
+      top: 10px;
+      left: 50%;
+      transform: translateX(-50%);
+      width: 200px;
+      height: 20px;
+      background: rgba(0, 0, 0, 0.5);
+      border-radius: 10px;
+      overflow: hidden;
+    }
+    .boss-health-fill {
+      height: 100%;
+      background: linear-gradient(to right, #ff0000, #ff9900);
+      width: 100%;
+    }
+  </style>
 </head>
 <body class="bg-gray-900 text-white flex flex-col items-center justify-center h-screen">
-    <div class="relative w-full h-full">
-        <canvas id="gameCanvas" class="w-full h-full"></canvas>
-        
-        <!-- 开始界面 -->
-        <div id="startScreen" class="game-overlay flex flex-col items-center justify-center bg-black bg-opacity-70">
-            <h1 class="text-5xl font-bold mb-6 text-yellow-300">SKY ADVENTURE</h1>
-            <div class="plane text-6xl mb-8">✈️</div>
-            <p class="text-xl mb-8 text-center max-w-md px-4">控制飞机躲避障碍物<br>收集星星获得高分!<br>按射击按钮消灭障碍物!<br>收集道具获得特殊能力!</p>
-            <button id="startButton" class="bg-yellow-500 hover:bg-yellow-600 text-black font-bold py-3 px-8 rounded-full text-xl transition-all duration-300 transform hover:scale-105 pointer-events-auto">
-                开始游戏
-            </button>
-            <div class="mt-8 grid grid-cols-3 gap-4 text-left max-w-md px-8">
-                <div class="flex items-center">
-                    <div class="powerup bg-red-500 mr-2"><i class="fas fa-bolt"></i></div>
-                    <span>火力增强</span>
-                </div>
-                <div class="flex items-center">
-                    <div class="powerup bg-purple-500 mr-2"><i class="fas fa-rocket"></i></div>
-                    <span>跟踪导弹</span>
-                </div>
-                <div class="flex items-center">
-                    <div class="powerup bg-blue-500 mr-2"><i class="fas fa-shield-alt"></i></div>
-                    <span>保护罩</span>
-                </div>
-                <div class="flex items-center">
-                    <div class="powerup bg-green-500 mr-2"><i class="fas fa-heart"></i></div>
-                    <span>恢复生命</span>
-                </div>
-                <div class="flex items-center">
-                    <div class="powerup bg-cyan-500 mr-2"><i class="fas fa-clock"></i></div>
-                    <span>时间减速</span>
-                </div>
-                <div class="flex items-center">
-                    <div class="powerup bg-orange-500 mr-2"><i class="fas fa-bomb"></i></div>
-                    <span>清屏炸弹</span>
-                </div>
-                <div class="flex items-center">
-                    <div class="powerup bg-pink-500 mr-2"><i class="fas fa-star"></i></div>
-                    <span>双倍分数</span>
-                </div>
-            </div>
-            <div class="mt-4 text-sm text-gray-300">
-                最高分: <span id="highScoreDisplay">0</span>
-            </div>
+  <div class="relative w-full h-full">
+    <canvas id="gameCanvas" class="w-full h-full"></canvas>
+    
+    <!-- 开始界面 -->
+    <div id="startScreen" class="game-overlay flex flex-col items-center justify-center bg-black bg-opacity-70">
+      <h1 class="text-5xl font-bold mb-6 text-yellow-300">SKY ADVENTURE</h1>
+      <div class="plane text-6xl mb-8">✈️</div>
+      <p class="text-xl mb-8 text-center max-w-md px-4">
+        控制飞机躲避障碍物<br>
+        收集星星获得高分!<br>
+        按射击按钮消灭障碍物!<br>
+        收集道具获得特殊能力!
+      </p>
+      <button id="startButton" class="bg-yellow-500 hover:bg-yellow-600 text-black font-bold py-3 px-8 rounded-full text-xl transition-all duration-300 transform hover:scale-105 pointer-events-auto">
+        开始游戏
+      </button>
+      <div class="mt-8 grid grid-cols-3 gap-4 text-left max-w-md px-8">
+        <div class="flex items-center">
+          <div class="powerup bg-red-500 mr-2"><i class="fas fa-bolt"></i></div>
+          <span>火力增强</span>
         </div>
-        
-        <!-- 游戏UI -->
-        <div id="gameUI" class="game-overlay hidden">
-            <div class="absolute top-4 left-4 bg-black bg-opacity-50 px-4 py-2 rounded-lg">
-                <div class="flex items-center">
-                    <i class="fas fa-star text-yellow-400 mr-2"></i>
-                    <span id="scoreDisplay" class="text-xl">0</span>
-                </div>
-            </div>
-            <div class="absolute top-4 right-4 bg-black bg-opacity-50 px-4 py-2 rounded-lg">
-                <div class="flex items-center">
-                    <i class="fas fa-heart text-red-500 mr-2"></i>
-                    <span id="livesDisplay" class="text-xl">3</span>
-                </div>
-            </div>
-            <div class="absolute top-4 left-1/2 transform -translate-x-1/2 bg-black bg-opacity-50 px-4 py-2 rounded-lg">
-                <div class="flex items-center">
-                    <i class="fas fa-bolt text-yellow-400 mr-2"></i>
-                    <span id="ammoDisplay" class="text-xl">∞</span>
-                </div>
-            </div>
-            <div class="absolute bottom-4 left-4 bg-black bg-opacity-50 px-4 py-2 rounded-lg">
-                <div class="flex items-center">
-                    <i class="fas fa-tachometer-alt text-blue-400 mr-2"></i>
-                    <span id="speedDisplay" class="text-xl">100</span>
-                    <span class="ml-1">km/h</span>
-                </div>
-            </div>
-            
-            <!-- 主动技能图标 -->
-            <div id="powerupStatus" class="absolute bottom-24 right-4 flex gap-2">
-                <!-- 这里会被JavaScript动态填充 -->
-            </div>
-            
-            <!-- Boss血条 -->
-            <div id="bossHealthBar" class="boss-health-bar hidden">
-                <div id="bossHealthFill" class="boss-health-fill"></div>
-            </div>
-            
-            <!-- 触摸控制按钮 -->
-            <div id="leftBtn" class="control-btn hidden">
-                <i class="fas fa-arrow-left"></i>
-            </div>
-            <div id="rightBtn" class="control-btn hidden">
-                <i class="fas fa-arrow-right"></i>
-            </div>
-            <div id="upBtn" class="control-btn hidden">
-                <i class="fas fa-arrow-up"></i>
-            </div>
-            <div id="downBtn" class="control-btn hidden">
-                <i class="fas fa-arrow-down"></i>
-            </div>
-            <div id="fireBtn" class="control-btn hidden">
-                <i class="fas fa-bolt text-yellow-400"></i>
-            </div>
-            
-            <!-- 虚拟摇杆 -->
-            <div id="joystick" class="joystick hidden">
-                <div id="joystickHandle" class="joystick-handle"></div>
-            </div>
+        <div class="flex items-center">
+          <div class="powerup bg-purple-500 mr-2"><i class="fas fa-rocket"></i></div>
+          <span>跟踪导弹</span>
         </div>
-        
-        <!-- 游戏结束界面 -->
-        <div id="gameOverScreen" class="game-overlay hidden flex flex-col items-center justify-center bg-black bg-opacity-70">
-            <h1 class="text-5xl font-bold mb-6 text-red-500">GAME OVER</h1>
-            <div class="text-3xl mb-8">
-                得分: <span id="finalScore" class="text-yellow-400">0</span>
-            </div>
-            <div id="achievements" class="mb-4 text-center">
-                <!-- 成就提示 -->
-            </div>
-            <button id="restartButton" class="bg-yellow-500 hover:bg-yellow-600 text-black font-bold py-3 px-8 rounded-full text-xl transition-all duration-300 transform hover:scale-105 pointer-events-auto">
-                再玩一次
-            </button>
+        <div class="flex items-center">
+          <div class="powerup bg-blue-500 mr-2"><i class="fas fa-shield-alt"></i></div>
+          <span>保护罩</span>
+        </div>
+        <div class="flex items-center">
+          <div class="powerup bg-green-500 mr-2"><i class="fas fa-heart"></i></div>
+          <span>恢复生命</span>
+        </div>
+        <div class="flex items-center">
+          <div class="powerup bg-cyan-500 mr-2"><i class="fas fa-clock"></i></div>
+          <span>时间减速</span>
+        </div>
+        <div class="flex items-center">
+          <div class="powerup bg-orange-500 mr-2"><i class="fas fa-bomb"></i></div>
+          <span>清屏炸弹</span>
         </div>
+        <div class="flex items-center">
+          <div class="powerup bg-pink-500 mr-2"><i class="fas fa-star"></i></div>
+          <span>双倍分数</span>
+        </div>
+      </div>
+      <div class="mt-4 text-sm text-gray-300">
+        最高分: <span id="highScoreDisplay">0</span>
+      </div>
     </div>
+    
+    <!-- 游戏UI -->
+    <div id="gameUI" class="game-overlay hidden">
+      <div class="absolute top-4 left-4 bg-black bg-opacity-50 px-4 py-2 rounded-lg">
+        <div class="flex items-center">
+          <i class="fas fa-star text-yellow-400 mr-2"></i>
+          <span id="scoreDisplay" class="text-xl">0</span>
+        </div>
+      </div>
+      <div class="absolute top-4 right-4 bg-black bg-opacity-50 px-4 py-2 rounded-lg">
+        <div class="flex items-center">
+          <i class="fas fa-heart text-red-500 mr-2"></i>
+          <span id="livesDisplay" class="text-xl">3</span>
+        </div>
+      </div>
+      <div class="absolute top-4 left-1/2 transform -translate-x-1/2 bg-black bg-opacity-50 px-4 py-2 rounded-lg">
+        <div class="flex items-center">
+          <i class="fas fa-bolt text-yellow-400 mr-2"></i>
+          <span id="ammoDisplay" class="text-xl">∞</span>
+        </div>
+      </div>
+      <div class="absolute bottom-4 left-4 bg-black bg-opacity-50 px-4 py-2 rounded-lg">
+        <div class="flex items-center">
+          <i class="fas fa-tachometer-alt text-blue-400 mr-2"></i>
+          <span id="speedDisplay" class="text-xl">100</span>
+          <span class="ml-1">km/h</span>
+        </div>
+      </div>
+      
+      <!-- 主动技能图标 -->
+      <div id="powerupStatus" class="absolute bottom-24 right-4 flex gap-2">
+        <!-- 这里会被JavaScript动态填充 -->
+      </div>
+      
+      <!-- Boss血条 -->
+      <div id="bossHealthBar" class="boss-health-bar hidden">
+        <div id="bossHealthFill" class="boss-health-fill"></div>
+      </div>
+      
+      <!-- 触摸控制按钮 -->
+      <div id="leftBtn" class="control-btn hidden">
+        <i class="fas fa-arrow-left"></i>
+      </div>
+      <div id="rightBtn" class="control-btn hidden">
+        <i class="fas fa-arrow-right"></i>
+      </div>
+      <div id="upBtn" class="control-btn hidden">
+        <i class="fas fa-arrow-up"></i>
+      </div>
+      <div id="downBtn" class="control-btn hidden">
+        <i class="fas fa-arrow-down"></i>
+      </div>
+      <div id="fireBtn" class="control-btn hidden">
+        <i class="fas fa-bolt text-yellow-400"></i>
+      </div>
+      
+      <!-- 虚拟摇杆 -->
+      <div id="joystick" class="joystick hidden">
+        <div id="joystickHandle" class="joystick-handle"></div>
+      </div>
+    </div>
+    
+    <!-- 游戏结束界面 -->
+    <div id="gameOverScreen" class="game-overlay hidden flex flex-col items-center justify-center bg-black bg-opacity-70">
+      <h1 class="text-5xl font-bold mb-6 text-red-500">GAME OVER</h1>
+      <div class="text-3xl mb-8">
+        得分: <span id="finalScore" class="text-yellow-400">0</span>
+      </div>
+      <div id="achievements" class="mb-4 text-center">
+        <!-- 成就提示 -->
+      </div>
+      <button id="restartButton" class="bg-yellow-500 hover:bg-yellow-600 text-black font-bold py-3 px-8 rounded-full text-xl transition-all duration-300 transform hover:scale-105 pointer-events-auto">
+        再玩一次
+      </button>
+    </div>
+  </div>
 
-    <audio id="shootSound" src="https://assets.mixkit.co/sfx/preview/mixkit-laser-weapon-shot-1680.mp3" preload="auto"></audio>
-    <audio id="explosionSound" src="https://assets.mixkit.co/sfx/preview/mixkit-explosion-impact-1684.mp3" preload="auto"></audio>
-    <audio id="powerupSound" src="https://assets.mixkit.co/sfx/preview/mixkit-achievement-bell-600.mp3" preload="auto"></audio>
-    <audio id="bgMusic" loop src="https://assets.mixkit.co/music/preview/mixkit-game-show-suspense-waiting-668.mp3" preload="auto"></audio>
-    <audio id="enemyShootSound" src="https://assets.mixkit.co/sfx/preview/mixkit-short-laser-gun-shot-1670.mp3" preload="auto"></audio>
+  <audio id="shootSound" src="https://assets.mixkit.co/sfx/preview/mixkit-laser-weapon-shot-1680.mp3" preload="auto"></audio>
+  <audio id="explosionSound" src="https://assets.mixkit.co/sfx/preview/mixkit-explosion-impact-1684.mp3" preload="auto"></audio>
+  <audio id="powerupSound" src="https://assets.mixkit.co/sfx/preview/mixkit-achievement-bell-600.mp3" preload="auto"></audio>
+  <audio id="bgMusic" loop src="https://assets.mixkit.co/music/preview/mixkit-game-show-suspense-waiting-668.mp3" preload="auto"></audio>
+  <audio id="enemyShootSound" src="https://assets.mixkit.co/sfx/preview/mixkit-short-laser-gun-shot-1670.mp3" preload="auto"></audio>
 
-    <script>
-        // 游戏状态
-        const gameState = {
-            started: false,
-            gameOver: false,
-            score: 0,
-            lives: 3,
-            ammo: Infinity,
-            speed: 100,
-            difficulty: 1,
-            timeSlow: 0, // 时间减速结束时间
-            doubleScore: 0, // 双倍分数结束时间
-            bossActive: false, // Boss是否激活
-            bossHealth: 0, // Boss当前血量
-            bossMaxHealth: 0, // Boss最大血量
-            plane: {
-                x: 0,
-                y: 0,
-                width: 60,
-                height: 60,
-                velocity: 0,  // 左右方向速度
-                verticalVelocity: 0,  // 上下方向速度
-                rotation: 0,
-                lastFireTime: 0,
-                fireRate: 200,  // 射击间隔(ms)
-                bulletDamage: 1,  // 子弹伤害
-                hasShield: false,
-                shieldDuration: 0,
-                powerups: {
-                    rapidFire: 0,  // 火力增强
-                    homingMissiles: 0,  // 跟踪导弹
-                }
-            },
-            stars: [],
-            obstacles: [],
-            clouds: [],
-            explosions: [],
-            bullets: [],
-            enemyBullets: [], // 敌人子弹
-            debris: [],
-            powerups: [],  // 道具
-            homingMissiles: [],  // 跟踪导弹
-            effects: [],  // 特效
-            particles: [], // 粒子效果
-            lastStarTime: 0,
-            lastObstacleTime: 0,
-            lastCloudTime: 0,
-            lastPowerupTime: 0,
-            lastBossSpawnTime: 0, // 上次生成Boss时间
-            lastEnemyShootTime: 0, // 敌人上次射击时间
-            keys: {
-                ArrowUp: false,
-                ArrowDown: false,
-                ArrowLeft: false,
-                ArrowRight: false,
-                Space: false
-            },
-            isMobile: false,
-            joystickActive: false,
-            joystickAngle: 0,
-            joystickDistance: 0,
-            achievements: {
-                firstBlood: false, // 第一次击杀
-                combo5: false, // 连续5次击杀
-                noDamage: false, // 无伤通关
-                bossSlayer: false // 击败Boss
-            },
-            highScore: localStorage.getItem('highScore') || 0
-        };
+  <script>
+    // 游戏状态
+    const gameState = {
+      started: false,
+      gameOver: false,
+      score: 0,
+      lives: 3,
+      ammo: Infinity,
+      speed: 100,
+      difficulty: 1,
+      timeSlow: 0, // 时间减速结束时间
+      doubleScore: 0, // 双倍分数结束时间
+      bossActive: false, // Boss是否激活
+      bossHealth: 0, // Boss当前血量
+      bossMaxHealth: 0, // Boss最大血量
+      plane: {
+        x: 0,
+        y: 0,
+        width: 60,
+        height: 60,
+        velocity: 0,  // 左右方向速度
+        verticalVelocity: 0,  // 上下方向速度
+        rotation: 0,
+        lastFireTime: 0,
+        fireRate: 200,  // 射击间隔(ms)
+        bulletDamage: 1,  // 子弹伤害
+        hasShield: false,
+        shieldDuration: 0,
+        powerups: {
+          rapidFire: 0,  // 火力增强
+          homingMissiles: 0,  // 跟踪导弹
+        }
+      },
+      stars: [],
+      obstacles: [],
+      clouds: [],
+      explosions: [],
+      bullets: [],
+      enemyBullets: [], // 敌人子弹
+      debris: [],
+      powerups: [],  // 道具
+      homingMissiles: [],  // 跟踪导弹
+      effects: [],  // 特效
+      particles: [], // 粒子效果
+      lastStarTime: 0,
+      lastObstacleTime: 0,
+      lastCloudTime: 0,
+      lastPowerupTime: 0,
+      lastBossSpawnTime: 0, // 上次生成Boss时间
+      lastEnemyShootTime: 0, // 敌人上次射击时间
+      keys: {
+        ArrowUp: false,
+        ArrowDown: false,
+        ArrowLeft: false,
+        ArrowRight: false,
+        Space: false
+      },
+      isMobile: false,
+      joystickActive: false,
+      joystickAngle: 0,
+      joystickDistance: 0,
+      achievements: {
+        firstBlood: false, // 第一次击杀
+        combo5: false, // 连续5次击杀
+        noDamage: false, // 无伤通关
+        bossSlayer: false // 击败Boss
+      },
+      highScore: localStorage.getItem('highScore') || 0
+    };
 
-        // 道具类型
-        const POWERUP_TYPES = {
-            RAPID_FIRE: {
-                id: 'rapidFire',
-                icon: 'fas fa-bolt',
-                color: 'red',
-                duration: 10000,  // 10秒
-                effect: (game) => {
-                    game.plane.fireRate = 100;  // 更快射击
-                    game.plane.powerups.rapidFire = Date.now() + POWERUP_TYPES.RAPID_FIRE.duration;
-                    createEffect('火力增强!', 'red', 1500);
-                    playSound('powerupSound');
-                }
-            },
-            HOMING_MISSILE: {
-                id: 'homingMissiles',
-                icon: 'fas fa-rocket',
-                color: 'purple',
-                duration: 10000,  // 10秒
-                effect: (game) => {
-                    game.plane.powerups.homingMissiles = Date.now() + POWERUP_TYPES.HOMING_MISSILE.duration;
-                    createEffect('跟踪导弹已激活!', 'purple', 1500);
-                    playSound('powerupSound');
-                }
-            },
-            SHIELD: {
-                id: 'shield',
-                icon: 'fas fa-shield-alt',
-                color: 'blue',
-                duration: 8000,  // 8秒
-                effect: (game) => {
-                    game.plane.hasShield = true;
-                    game.plane.shieldDuration = Date.now() + POWERUP_TYPES.SHIELD.duration;
-                    createEffect('保护罩已启用!', 'blue', 1500);
-                    playSound('powerupSound');
-                }
-            },
-            HEALTH: {
-                id: 'health',
-                icon: 'fas fa-heart',
-                color: 'green',
-                effect: (game) => {
-                    game.lives = Math.min(game.lives + 1, 5);  // 最多5条命
-                    updateUI();
-                    createEffect('生命值恢复!', 'green', 1500);
-                    playSound('powerupSound');
-                }
-            },
-            TIME_SLOW: {
-                id: 'timeSlow',
-                icon: 'fas fa-clock',
-                color: 'cyan',
-                duration: 8000,  // 8秒
-                effect: (game) => {
-                    game.timeSlow = Date.now() + POWERUP_TYPES.TIME_SLOW.duration;
-                    createEffect('时间减速!', 'cyan', 1500);
-                    playSound('powerupSound');
-                }
-            },
-            CLEAR_SCREEN: {
-                id: 'clearScreen',
-                icon: 'fas fa-bomb',
-                color: 'orange',
-                effect: (game) => {
-                    // 清除所有障碍物
-                    game.obstacles.forEach(obstacle => {
-                        createExplosion(obstacle.x, obstacle.y);
-                        createDebris(obstacle, 8);
-                    });
-                    game.obstacles = [];
-                    createEffect('清屏炸弹!', 'orange', 1500);
-                    playSound('powerupSound');
-                }
-            },
-            DOUBLE_SCORE: {
-                id: 'doubleScore',
-                icon: 'fas fa-star',
-                color: 'pink',
-                duration: 10000,  // 10秒
-                effect: (game) => {
-                    game.doubleScore = Date.now() + POWERUP_TYPES.DOUBLE_SCORE.duration;
-                    createEffect('双倍分数!', 'pink', 1500);
-                    playSound('powerupSound');
-                }
-            }
-        };
+    // 道具类型
+    const POWERUP_TYPES = {
+      RAPID_FIRE: {
+        id: 'rapidFire',
+        icon: 'fas fa-bolt',
+        color: 'red',
+        duration: 10000,  // 10秒
+        effect: (game) => {
+          game.plane.fireRate = 100;  // 更快射击
+          game.plane.powerups.rapidFire = Date.now() + POWERUP_TYPES.RAPID_FIRE.duration;
+          createEffect('火力增强!', 'red', 1500);
+          playSound('powerupSound');
+        }
+      },
+      HOMING_MISSILE: {
+        id: 'homingMissiles',
+        icon: 'fas fa-rocket',
+        color: 'purple',
+        duration: 10000,  // 10秒
+        effect: (game) => {
+          game.plane.powerups.homingMissiles = Date.now() + POWERUP_TYPES.HOMING_MISSILE.duration;
+          createEffect('跟踪导弹已激活!', 'purple', 1500);
+          playSound('powerupSound');
+        }
+      },
+      SHIELD: {
+        id: 'shield',
+        icon: 'fas fa-shield-alt',
+        color: 'blue',
+        duration: 8000,  // 8秒
+        effect: (game) => {
+          game.plane.hasShield = true;
+          game.plane.shieldDuration = Date.now() + POWERUP_TYPES.SHIELD.duration;
+          createEffect('保护罩已启用!', 'blue', 1500);
+          playSound('powerupSound');
+        }
+      },
+      HEALTH: {
+        id: 'health',
+        icon: 'fas fa-heart',
+        color: 'green',
+        effect: (game) => {
+          game.lives = Math.min(game.lives + 1, 5);  // 最多5条命
+          updateUI();
+          createEffect('生命值恢复!', 'green', 1500);
+          playSound('powerupSound');
+        }
+      },
+      TIME_SLOW: {
+        id: 'timeSlow',
+        icon: 'fas fa-clock',
+        color: 'cyan',
+        duration: 8000,  // 8秒
+        effect: (game) => {
+          game.timeSlow = Date.now() + POWERUP_TYPES.TIME_SLOW.duration;
+          createEffect('时间减速!', 'cyan', 1500);
+          playSound('powerupSound');
+        }
+      },
+      CLEAR_SCREEN: {
+        id: 'clearScreen',
+        icon: 'fas fa-bomb',
+        color: 'orange',
+        effect: (game) => {
+          // 清除所有障碍物
+          game.obstacles.forEach(obstacle => {
+            createExplosion(obstacle.x, obstacle.y);
+            createDebris(obstacle, 8);
+          });
+          game.obstacles = [];
+          createEffect('清屏炸弹!', 'orange', 1500);
+          playSound('powerupSound');
+        }
+      },
+      DOUBLE_SCORE: {
+        id: 'doubleScore',
+        icon: 'fas fa-star',
+        color: 'pink',
+        duration: 10000,  // 10秒
+        effect: (game) => {
+          game.doubleScore = Date.now() + POWERUP_TYPES.DOUBLE_SCORE.duration;
+          createEffect('双倍分数!', 'pink', 1500);
+          playSound('powerupSound');
+        }
+      }
+    };
 
-        // 获取DOM元素
-        const canvas = document.getElementById('gameCanvas');
-        const ctx = canvas.getContext('2d');
-        const startScreen = document.getElementById('startScreen');
-        const gameUI = document.getElementById('gameUI');
-        const gameOverScreen = document.getElementById('gameOverScreen');
-        const startButton = document.getElementById('startButton');
-        const restartButton = document.getElementById('restartButton');
-        const scoreDisplay = document.getElementById('scoreDisplay');
-        const livesDisplay = document.getElementById('livesDisplay');
-        const ammoDisplay = document.getElementById('ammoDisplay');
-        const speedDisplay = document.getElementById('speedDisplay');
-        const finalScore = document.getElementById('finalScore');
-        const powerupStatus = document.getElementById('powerupStatus');
-        const leftBtn = document.getElementById('leftBtn');
-        const rightBtn = document.getElementById('rightBtn');
-        const upBtn = document.getElementById('upBtn');
-        const downBtn = document.getElementById('downBtn');
-        const fireBtn = document.getElementById('fireBtn');
-        const joystick = document.getElementById('joystick');
-        const joystickHandle = document.getElementById('joystickHandle');
-        const bossHealthBar = document.getElementById('bossHealthBar');
-        const bossHealthFill = document.getElementById('bossHealthFill');
-        const achievementsDisplay = document.getElementById('achievements');
-        const highScoreDisplay = document.getElementById('highScoreDisplay');
+    // 获取DOM元素
+    const canvas = document.getElementById('gameCanvas');
+    const ctx = canvas.getContext('2d');
+    const startScreen = document.getElementById('startScreen');
+    const gameUI = document.getElementById('gameUI');
+    const gameOverScreen = document.getElementById('gameOverScreen');
+    const startButton = document.getElementById('startButton');
+    const restartButton = document.getElementById('restartButton');
+    const scoreDisplay = document.getElementById('scoreDisplay');
+    const livesDisplay = document.getElementById('livesDisplay');
+    const ammoDisplay = document.getElementById('ammoDisplay');
+    const speedDisplay = document.getElementById('speedDisplay');
+    const finalScore = document.getElementById('finalScore');
+    const powerupStatus = document.getElementById('powerupStatus');
+    const leftBtn = document.getElementById('leftBtn');
+    const rightBtn = document.getElementById('rightBtn');
+    const upBtn = document.getElementById('upBtn');
+    const downBtn = document.getElementById('downBtn');
+    const fireBtn = document.getElementById('fireBtn');
+    const joystick = document.getElementById('joystick');
+    const joystickHandle = document.getElementById('joystickHandle');
+    const bossHealthBar = document.getElementById('bossHealthBar');
+    const bossHealthFill = document.getElementById('bossHealthFill');
+    const achievementsDisplay = document.getElementById('achievements');
+    const highScoreDisplay = document.getElementById('highScoreDisplay');
 
-        // 音效
-        const shootSound = document.getElementById('shootSound');
-        const explosionSound = document.getElementById('explosionSound');
-        const powerupSound = document.getElementById('powerupSound');
-        const bgMusic = document.getElementById('bgMusic');
-        const enemyShootSound = document.getElementById('enemyShootSound');
+    // 音效
+    const shootSound = document.getElementById('shootSound');
+    const explosionSound = document.getElementById('explosionSound');
+    const powerupSound = document.getElementById('powerupSound');
+    const bgMusic = document.getElementById('bgMusic');
+    const enemyShootSound = document.getElementById('enemyShootSound');
 
-        // 播放音效
-        function playSound(soundElement) {
-            if (soundElement === 'bgMusic') {
-                bgMusic.currentTime = 0;
-                bgMusic.play().catch(e => console.log('Autoplay prevented:', e));
-            } else {
-                const sound = document.getElementById(soundElement);
-                sound.currentTime = 0;
-                sound.play();
-            }
-        }
+    // 播放音效
+    function playSound(soundElement) {
+      if (soundElement === 'bgMusic') {
+        bgMusic.currentTime = 0;
+        bgMusic.play().catch(e => console.log('Autoplay prevented:', e));
+      } else {
+        const sound = document.getElementById(soundElement);
+        sound.currentTime = 0;
+        sound.play();
+      }
+    }
 
-        // 检测是否移动设备
-        function detectMobile() {
-            return /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent);
-        }
+    // 检测是否移动设备
+    function detectMobile() {
+      return /Android|webOS|iPhone|iPad|iPod|BlackBerry|IEMobile|Opera Mini/i.test(navigator.userAgent);
+    }
 
-        // 设置画布大小
-        function resizeCanvas() {
-            canvas.width = window.innerWidth;
-            canvas.height = window.innerHeight;
-            if (gameState.started && !gameState.gameOver) {
-                gameState.plane.x = canvas.width / 2;
-                gameState.plane.y = canvas.height / 2;
-            }
-        }
+    // 设置画布大小
+    function resizeCanvas() {
+      canvas.width = window.innerWidth;
+      canvas.height = window.innerHeight;
+      if (gameState.started && !gameState.gameOver) {
+        gameState.plane.x = canvas.width / 2;
+        gameState.plane.y = canvas.height / 2;
+      }
+    }
 
-        // 创建文字特效
-        function createEffect(text, color, duration) {
-            gameState.effects.push({
-                text,
-                color,
-                x: gameState.plane.x,
-                y: gameState.plane.y - 50,
-                alpha: 1,
-                duration,
-                startTime: Date.now()
-            });
-        }
+    // 创建文字特效
+    function createEffect(text, color, duration) {
+      gameState.effects.push({
+        text,
+        color,
+        x: gameState.plane.x,
+        y: gameState.plane.y - 50,
+        alpha: 1,
+        duration,
+        startTime: Date.now()
+      });
+    }
 
-        // 创建粒子效果
-        function createParticles(x, y, count, color) {
-            for (let i = 0; i < count; i++) {
-                gameState.particles.push({
-                    x,
-                    y,
-                    size: Math.random() * 5 + 2,
-                    speedX: (Math.random() - 0.5) * 4,
-                    speedY: (Math.random() - 0.5) * 4,
-                    color,
-                    life: 100
-                });
-            }
-        }
+    // 创建粒子效果
+    function createParticles(x, y, count, color) {
+      for (let i = 0; i < count; i++) {
+        gameState.particles.push({
+          x,
+          y,
+          size: Math.random() * 5 + 2,
+          speedX: (Math.random() - 0.5) * 4,
+          speedY: (Math.random() - 0.5) * 4,
+          color,
+          life: 100
+        });
+      }
+    }
 
-        // 更新UI
-        function updateUI() {
-            scoreDisplay.textContent = gameState.score;
-            livesDisplay.textContent = gameState.lives;
-            speedDisplay.textContent = Math.floor(gameState.speed);
-            ammoDisplay.textContent = gameState.ammo === Infinity ? "∞" : gameState.ammo;
-            highScoreDisplay.textContent = gameState.highScore;
-            
-            // 更新道具状态显示
-            powerupStatus.innerHTML = '';
-            
-            if (gameState.plane.powerups.rapidFire > Date.now()) {
-                const timeLeft = Math.ceil((gameState.plane.powerups.rapidFire - Date.now()) / 1000);
-                powerupStatus.innerHTML += `
-                    <div class="bg-black bg-opacity-50 px-3 py-1 rounded-lg flex items-center" title="火力增强 (${timeLeft}s)">
-                        <i class="fas fa-bolt text-red-500 mr-2"></i>
-                    </div>
-                `;
-            }
-            
-            if (gameState.plane.powerups.homingMissiles > Date.now()) {
-                const timeLeft = Math.ceil((gameState.plane.powerups.homingMissiles - Date.now()) / 1000);
-                powerupStatus.innerHTML += `
-                    <div class="bg-black bg-opacity-50 px-3 py-1 rounded-lg flex items-center" title="跟踪导弹 (${timeLeft}s)">
-                        <i class="fas fa-rocket text-purple-500 mr-2"></i>
-                    </div>
-                `;
-            }
-            
-            if (gameState.plane.hasShield && gameState.plane.shieldDuration > Date.now()) {
-                const timeLeft = Math.ceil((gameState.plane.shieldDuration - Date.now()) / 1000);
-                powerupStatus.innerHTML += `
-                    <div class="bg-black bg-opacity-50 px-3 py-1 rounded-lg flex items-center" title="保护罩 (${timeLeft}s)">
-                        <i class="fas fa-shield-alt text-blue-500 mr-2"></i>
-                    </div>
-                `;
-            }
-            
-            if (gameState.timeSlow > Date.now()) {
-                const timeLeft = Math.ceil((gameState.timeSlow - Date.now()) / 1000);
-                powerupStatus.innerHTML += `
-                    <div class="bg-black bg-opacity-50 px-3 py-1 rounded-lg flex items-center" title="时间减速 (${timeLeft}s)">
-                        <i class="fas fa-clock text-cyan-500 mr-2"></i>
-                    </div>
-                `;
-            }
-            
-            if (gameState.doubleScore > Date.now()) {
-                const timeLeft = Math.ceil((gameState.doubleScore - Date.now()) / 1000);
-                powerupStatus.innerHTML += `
-                    <div class="bg-black bg-opacity-50 px-3 py-1 rounded-lg flex items-center" title="双倍分数 (${timeLeft}s)">
-                        <i class="fas fa-star text-pink-500 mr-2"></i>
-                    </div>
-                `;
-            }
-            
-            // 更新Boss血条
-            if (gameState.bossActive) {
-                bossHealthBar.classList.remove('hidden');
-                bossHealthFill.style.width = `${(gameState.bossHealth / gameState.bossMaxHealth) * 100}%`;
-            } else {
-                bossHealthBar.classList.add('hidden');
-            }
-        }
+    // 更新UI
+    function updateUI() {
+      scoreDisplay.textContent = gameState.score;
+      livesDisplay.textContent = gameState.lives;
+      speedDisplay.textContent = Math.floor(gameState.speed);
+      ammoDisplay.textContent = gameState.ammo === Infinity ? "∞" : gameState.ammo;
+      highScoreDisplay.textContent = gameState.highScore;
+      
+      // 更新道具状态显示
+      powerupStatus.innerHTML = '';
+      
+      if (gameState.plane.powerups.rapidFire > Date.now()) {
+        const timeLeft = Math.ceil((gameState.plane.powerups.rapidFire - Date.now()) / 1000);
+        powerupStatus.innerHTML += `
+          <div class="bg-black bg-opacity-50 px-3 py-1 rounded-lg flex items-center" title="火力增强 (${timeLeft}s)">
+            <i class="fas fa-bolt text-red-500 mr-2"></i>
+          </div>
+        `;
+      }
+      
+      if (gameState.plane.powerups.homingMissiles > Date.now()) {
+        const timeLeft = Math.ceil((gameState.plane.powerups.homingMissiles - Date.now()) / 1000);
+        powerupStatus.innerHTML += `
+          <div class="bg-black bg-opacity-50 px-3 py-1 rounded-lg flex items-center" title="跟踪导弹 (${timeLeft}s)">
+            <i class="fas fa-rocket text-purple-500 mr-2"></i>
+          </div>
+        `;
+      }
+      
+      if (gameState.plane.hasShield && gameState.plane.shieldDuration > Date.now()) {
+        const timeLeft = Math.ceil((gameState.plane.shieldDuration - Date.now()) / 1000);
+        powerupStatus.innerHTML += `
+          <div class="bg-black bg-opacity-50 px-3 py-1 rounded-lg flex items-center" title="保护罩 (${timeLeft}s)">
+            <i class="fas fa-shield-alt text-blue-500 mr-2"></i>
+          </div>
+        `;
+      }
+      
+      if (gameState.timeSlow > Date.now()) {
+        const timeLeft = Math.ceil((gameState.timeSlow - Date.now()) / 1000);
+        powerupStatus.innerHTML += `
+          <div class="bg-black bg-opacity-50 px-3 py-1 rounded-lg flex items-center" title="时间减速 (${timeLeft}s)">
+            <i class="fas fa-clock text-cyan-500 mr-2"></i>
+          </div>
+        `;
+      }
+      
+      if (gameState.doubleScore > Date.now()) {
+        const timeLeft = Math.ceil((gameState.doubleScore - Date.now()) / 1000);
+        powerupStatus.innerHTML += `
+          <div class="bg-black bg-opacity-50 px-3 py-1 rounded-lg flex items-center" title="双倍分数 (${timeLeft}s)">
+            <i class="fas fa-star text-pink-500 mr-2"></i>
+          </div>
+        `;
+      }
+      
+      // 更新Boss血条
+      if (gameState.bossActive) {
+        bossHealthBar.classList.remove('hidden');
+        bossHealthFill.style.width = `${(gameState.bossHealth / gameState.bossMaxHealth) * 100}%`;
+      } else {
+        bossHealthBar.classList.add('hidden');
+      }
+    }
 
-        // 初始化游戏
-        function initGame() {
-            gameState.isMobile = detectMobile();
-            resizeCanvas();
-            gameState.started = true;
-            gameState.gameOver = false;
-            gameState.score = 0;
-            gameState.lives = 3;
-            gameState.ammo = Infinity;
-            gameState.speed = 100;
-            gameState.difficulty = 1;
-            gameState.timeSlow = 0;
-            gameState.doubleScore = 0;
-            gameState.bossActive = false;
-            gameState.bossHealth = 0;
-            gameState.bossMaxHealth = 0;
-            gameState.plane = {
-                x: canvas.width / 2,
-                y: canvas.height / 2,
-                width: 60,
-                height: 60,
-                velocity: 0,
-                verticalVelocity: 0,
-                rotation: 0,
-                lastFireTime: 0,
-                fireRate: 200,
-                bulletDamage: 1,
-                hasShield: false,
-                shieldDuration: 0,
-                powerups: {
-                    rapidFire: 0,
-                    homingMissiles: 0,
-                }
-            };
-            gameState.stars = [];
-            gameState.obstacles = [];
-            gameState.clouds = [];
-            gameState.explosions = [];
-            gameState.bullets = [];
-            gameState.enemyBullets = [];
-            gameState.debris = [];
-            gameState.powerups = [];
-            gameState.homingMissiles = [];
-            gameState.effects = [];
-            gameState.particles = [];
-            gameState.lastStarTime = 0;
-            gameState.lastObstacleTime = 0;
-            gameState.lastCloudTime = 0;
-            gameState.lastPowerupTime = 0;
-            gameState.lastBossSpawnTime = 0;
-            gameState.lastEnemyShootTime = 0;
-            gameState.achievements = {
-                firstBlood: false,
-                combo5: false,
-                noDamage: false,
-                bossSlayer: false
-            };
-            
-            startScreen.classList.add('hidden');
-            gameOverScreen.classList.add('hidden');
-            gameUI.classList.remove('hidden');
-            
-            // 显示触摸控制按钮（如果是移动设备）
-            if (gameState.isMobile) {
-                leftBtn.classList.add('hidden');
-                rightBtn.classList.add('hidden');
-                upBtn.classList.add('hidden');
-                downBtn.classList.add('hidden');
-                fireBtn.classList.remove('hidden');
-                joystick.classList.remove('hidden');
-            }
-            
-            updateUI();
-            createInitialClouds();
-            playSound('bgMusic');
-            requestAnimationFrame(gameLoop);
+    // 初始化游戏
+    function initGame() {
+      gameState.isMobile = detectMobile();
+      resizeCanvas();
+      gameState.started = true;
+      gameState.gameOver = false;
+      gameState.score = 0;
+      gameState.lives = 3;
+      gameState.ammo = Infinity;
+      gameState.speed = 100;
+      gameState.difficulty = 1;
+      gameState.timeSlow = 0;
+      gameState.doubleScore = 0;
+      gameState.bossActive = false;
+      gameState.bossHealth = 0;
+      gameState.bossMaxHealth = 0;
+      gameState.plane = {
+        x: canvas.width / 2,
+        y: canvas.height / 2,
+        width: 60,
+        height: 60,
+        velocity: 0,
+        verticalVelocity: 0,
+        rotation: 0,
+        lastFireTime: 0,
+        fireRate: 200,
+        bulletDamage: 1,
+        hasShield: false,
+        shieldDuration: 0,
+        powerups: {
+          rapidFire: 0,
+          homingMissiles: 0,
         }
+      };
+      gameState.stars = [];
+      gameState.obstacles = [];
+      gameState.clouds = [];
+      gameState.explosions = [];
+      gameState.bullets = [];
+      gameState.enemyBullets = [];
+      gameState.debris = [];
+      gameState.powerups = [];
+      gameState.homingMissiles = [];
+      gameState.effects = [];
+      gameState.particles = [];
+      gameState.lastStarTime = 0;
+      gameState.lastObstacleTime = 0;
+      gameState.lastCloudTime = 0;
+      gameState.lastPowerupTime = 0;
+      gameState.lastBossSpawnTime = 0;
+      gameState.lastEnemyShootTime = 0;
+      gameState.achievements = {
+        firstBlood: false,
+        combo5: false,
+        noDamage: false,
+        bossSlayer: false
+      };
+      
+      startScreen.classList.add('hidden');
+      gameOverScreen.classList.add('hidden');
+      gameUI.classList.remove('hidden');
+      
+      // 显示触摸控制按钮（如果是移动设备）
+      if (gameState.isMobile) {
+        leftBtn.classList.add('hidden');
+        rightBtn.classList.add('hidden');
+        upBtn.classList.add('hidden');
+        downBtn.classList.add('hidden');
+        fireBtn.classList.remove('hidden');
+        joystick.classList.remove('hidden');
+      }
+      
+      updateUI();
+      createInitialClouds();
+      playSound('bgMusic');
+      requestAnimationFrame(gameLoop);
+    }
 
-        // 创建初始云朵
-        function createInitialClouds() {
-            for (let i = 0; i < 10; i++) {
-                createCloud(true);
-            }
-        }
+    // 创建初始云朵
+    function createInitialClouds() {
+      for (let i = 0; i < 10; i++) {
+        createCloud(true);
+      }
+    }
 
-        // 创建云朵
-        function createCloud(initial = false) {
-            const size = Math.random() * 60 + 40;
-            const x = initial ? Math.random() * canvas.width : canvas.width + size;
-            const y = Math.random() * canvas.height;
-            const speed = Math.random() * 1 + 0.5;
-            
-            gameState.clouds.push({
-                x,
-                y,
-                size,
-                speed,
-                parts: Array(3).fill().map(() => ({
-                    size: size * (Math.random() * 0.3 + 0.7),
-                    offsetX: (Math.random() - 0.5) * size * 0.6,
-                    offsetY: (Math.random() - 0.5) * size * 0.6
-                }))
-            });
-        }
+    // 创建云朵
+    function createCloud(initial = false) {
+      const size = Math.random() * 60 + 40;
+      const x = initial ? Math.random() * canvas.width : canvas.width + size;
+      const y = Math.random() * canvas.height;
+      const speed = Math.random() * 1 + 0.5;
+      
+      gameState.clouds.push({
+        x,
+        y,
+        size,
+        speed,
+        parts: Array(3).fill().map(() => ({
+          size: size * (Math.random() * 0.3 + 0.7),
+          offsetX: (Math.random() - 0.5) * size * 0.6,
+          offsetY: (Math.random() - 0.5) * size * 0.6
+        }))
+      });
+    }
 
-        // 创建星星
-        function createStar() {
-            const size = Math.random() * 20 + 15;
-            const x = canvas.width + size;
-            const y = Math.random() * (canvas.height - size * 2) + size;
-            const speed = Math.random() * 3 + 3 + gameState.speed / 50;
-            
-            gameState.stars.push({
-                x,
-                y,
-                size,
-                speed,
-                rotation: 0,
-                rotationSpeed: Math.random() * 0.1 - 0.05
-            });
-        }
+    // 创建星星
+    function createStar() {
+      const size = Math.random() * 20 + 15;
+      const x = canvas.width + size;
+      const y = Math.random() * (canvas.height - size * 2) + size;
+      const speed = Math.random() * 3 + 3 + gameState.speed / 50;
+      
+      gameState.stars.push({
+        x,
+        y,
+        size,
+        speed,
+        rotation: 0,
+        rotationSpeed: Math.random() * 0.1 - 0.05
+      });
+    }
 
-        // 创建敌人子弹
-        function createEnemyBullet(x, y) {
-            const size = 8;
-            const speed = 5 + gameState.speed / 50;
-            const angle = Math.atan2(
-                gameState.plane.y - y,
-                gameState.plane.x - x
-            );
-            
-            gameState.enemyBullets.push({
-                x,
-                y,
-                size,
-                speed,
-                angle,
-                damage: 1
-            });
-            
-            playSound('enemyShootSound');
-        }
+    // 创建敌人子弹
+    function createEnemyBullet(x, y) {
+      const size = 8;
+      const speed = 5 + gameState.speed / 50;
+      const angle = Math.atan2(
+        gameState.plane.y - y,
+        gameState.plane.x - x
+      );
+      
+      gameState.enemyBullets.push({
+        x,
+        y,
+        size,
+        speed,
+        angle,
+        damage: 1
+      });
+      
+      playSound('enemyShootSound');
+    }
 
-        // 创建障碍物
-        function createObstacle() {
-            const width = Math.random() * 80 + 40;
-            const height = Math.random() * 80 + 40;
-            const x = canvas.width + width;
-            const y = Math.random() * (canvas.height - height);
-            const speed = Math.random() * 2 + 2 + gameState.speed / 50;
-            const type = Math.random() > 0.5 ? 'rectangle' : 'circle';
-            const health = type === 'rectangle' ? (width > 80 ? 3 : 2) : 1;
-            const canShoot = Math.random() > 0.7; // 30%的敌人会射击
-            
-            // 碰撞体积比实际显示大20%
-            const collisionWidth = width * 1.2;
-            const collisionHeight = height * 1.2;
-            
-            gameState.obstacles.push({
-                x,
-                y,
-                width,
-                height,
-                collisionWidth,
-                collisionHeight,
-                speed,
-                type,
-                health,
-                maxHealth: health,
-                isLarge: width > 80,
-                canShoot,
-                lastShootTime: 0,
-                shootCooldown: Math.random() * 2000 + 1000 // 射击冷却时间1-3秒
-            });
-        }
+    // 创建障碍物
+    function createObstacle() {
+      const width = Math.random() * 80 + 40;
+      const height = Math.random() * 80 + 40;
+      const x = canvas.width + width;
+      const y = Math.random() * (canvas.height - height);
+      const speed = Math.random() * 2 + 2 + gameState.speed / 50;
+      const type = Math.random() > 0.5 ? 'rectangle' : 'circle';
+      const health = type === 'rectangle' ? (width > 80 ? 3 : 2) : 1;
+      const canShoot = Math.random() > 0.7; // 30%的敌人会射击
+      
+      // 碰撞体积比实际显示大20%
+      const collisionWidth = width * 1.2;
+      const collisionHeight = height * 1.2;
+      
+      gameState.obstacles.push({
+        x,
+        y,
+        width,
+        height,
+        collisionWidth,
+        collisionHeight,
+        speed,
+        type,
+        health,
+        maxHealth: health,
+        isLarge: width > 80,
+        canShoot,
+        lastShootTime: 0,
+        shootCooldown: Math.random() * 2000 + 1000 // 射击冷却时间1-3秒
+      });
+    }
 
-        // 创建Boss障碍物
-        function createBoss() {
-            const width = 150;
-            const height = 150;
-            const x = canvas.width + width;
-            const y = canvas.height / 2 - height / 2;
-            const speed = 1 + gameState.speed / 100;
-            const health = 20 + Math.floor(gameState.score / 5000) * 5;
-            
-            gameState.bossActive = true;
-            gameState.bossHealth = health;
-            gameState.bossMaxHealth = health;
-            gameState.lastBossSpawnTime = Date.now();
-            
-            gameState.obstacles.push({
-                x,
-                y,
-                width,
-                height,
-                collisionWidth: width,
-                collisionHeight: height,
-                speed,
-                type: 'rectangle',
-                health,
-                maxHealth: health,
-                isLarge: true,
-                isBoss: true,
-                canShoot: true,
-                lastShootTime: 0,
-                shootCooldown: 500 // Boss射击冷却时间0.5秒
-            });
-            
-            createEffect('BOSS出现!', 'red', 2000);
-        }
+    // 创建Boss障碍物
+    function createBoss() {
+      const width = 150;
+      const height = 150;
+      const x = canvas.width + width;
+      const y = canvas.height / 2 - height / 2;
+      const speed = 1 + gameState.speed / 100;
+      const health = 20 + Math.floor(gameState.score / 5000) * 5;
+      
+      gameState.bossActive = true;
+      gameState.bossHealth = health;
+      gameState.bossMaxHealth = health;
+      gameState.lastBossSpawnTime = Date.now();
+      
+      gameState.obstacles.push({
+        x,
+        y,
+        width,
+        height,
+        collisionWidth: width,
+        collisionHeight: height,
+        speed,
+        type: 'rectangle',
+        health,
+        maxHealth: health,
+        isLarge: true,
+        isBoss: true,
+        canShoot: true,
+        lastShootTime: 0,
+        shootCooldown: 500 // Boss射击冷却时间0.5秒
+      });
+      
+      createEffect('BOSS出现!', 'red', 2000);
+    }
 
-        // 创建道具
-        function createPowerup() {
-            const size = 40;
-            const x = canvas.width + size;
-            const y = Math.random() * (canvas.height - size * 2) + size;
-            const speed = Math.random() * 2 + 1;
-            
-            // 随机选择一种道具类型
-            const powerupKeys = Object.keys(POWERUP_TYPES);
-            const randomPowerup = POWERUP_TYPES[powerupKeys[Math.floor(Math.random() * powerupKeys.length)]];
-            
-            gameState.powerups.push({
-                x,
-                y,
-                size,
-                speed,
-                type: randomPowerup
-            });
-        }
+    // 创建道具
+    function createPowerup() {
+      const size = 40;
+      const x = canvas.width + size;
+      const y = Math.random() * (canvas.height - size * 2) + size;
+      const speed = Math.random() * 2 + 1;
+      
+      // 随机选择一种道具类型
+      const powerupKeys = Object.keys(POWERUP_TYPES);
+      const randomPowerup = POWERUP_TYPES[powerupKeys[Math.floor(Math.random() * powerupKeys.length)]];
+      
+      gameState.powerups.push({
+        x,
+        y,
+        size,
+        speed,
+        type: randomPowerup
+      });
+    }
 
-        // 创建跟踪导弹
-        function createHomingMissile() {
-            if (gameState.obstacles.length === 0) return;  // 没有目标时不开火
-            
-            // 找到最近的障碍物作为目标
-            let closestObstacle = null;
-            let minDistance = Infinity;
-            
-            gameState.obstacles.forEach(obstacle => {
-                const dx = obstacle.x - gameState.plane.x;
-                const dy = obstacle.y - gameState.plane.y;
-                const distance = Math.sqrt(dx * dx + dy * dy);
-                
-                if (distance < minDistance) {
-                    minDistance = distance;
-                    closestObstacle = obstacle;
-                }
-            });
-            
-            if (!closestObstacle) return;
-            
-            const size = 12;
-            gameState.homingMissiles.push({
-                x: gameState.plane.x,
-                y: gameState.plane.y,
-                size,
-                speed: 8,
-                target: closestObstacle,
-                angle: Math.atan2(
-                    closestObstacle.y - gameState.plane.y,
-                    closestObstacle.x - gameState.plane.x
-                )
-            });
+    // 创建跟踪导弹
+    function createHomingMissile() {
+      if (gameState.obstacles.length === 0) return;  // 没有目标时不开火
+      
+      // 找到最近的障碍物作为目标
+      let closestObstacle = null;
+      let minDistance = Infinity;
+      
+      gameState.obstacles.forEach(obstacle => {
+        const dx = obstacle.x - gameState.plane.x;
+        const dy = obstacle.y - gameState.plane.y;
+        const distance = Math.sqrt(dx * dx + dy * dy);
+        
+        if (distance < minDistance) {
+          minDistance = distance;
+          closestObstacle = obstacle;
         }
+      });
+      
+      if (!closestObstacle) return;
+      
+      const size = 12;
+      gameState.homingMissiles.push({
+        x: gameState.plane.x,
+        y: gameState.plane.y,
+        size,
+        speed: 8,
+        target: closestObstacle,
+        angle: Math.atan2(
+          closestObstacle.y - gameState.plane.y,
+          closestObstacle.x - gameState.plane.x
+        )
+      });
+    }
 
-        // 创建碎片
-        function createDebris(obstacle, count = 5) {
-            for (let i = 0; i < count; i++) {
-                gameState.debris.push({
-                    x: obstacle.x,
-                    y: obstacle.y,
-                    width: obstacle.width / 3,
-                    height: obstacle.height / 3,
-                    speedX: (Math.random() - 0.5) * 4,
-                    speedY: (Math.random() - 0.5) * 4,
-                    rotation: 0,
-                    rotationSpeed: (Math.random() - 0.5) * 0.2,
-                    opacity: 1
-                });
-              }
+    // 创建碎片
+    function createDebris(obstacle, count = 5) {
+      for (let i = 0; i < count; i++) {
+        gameState.debris.push({
+          x: obstacle.x,
+          y: obstacle.y,
+          width: obstacle.width / 3,
+          height: obstacle.height / 3,
+          speedX: (Math.random() - 0.5) * 4,
+          speedY: (Math.random() - 0.5) * 4,
+          rotation: 0,
+          rotationSpeed: (Math.random() - 0.5) * 0.2,
+          opacity: 1
+        });
+      }
     }
 
     // 创建子弹
     function createBullet() {
-        if (gameState.ammo <= 0) return false;  // 没有弹药了
-        
-        const size = gameState.plane.powerups.rapidFire > Date.now() ? 10 : 8;  // 火力增强时��弹更大
-        const damage = gameState.plane.powerups.rapidFire > Date.now() ? 2 : 1;  // 火力增强时伤害更高
-        const speed = gameState.plane.powerups.rapidFire > Date.now() ? 18 : 15;  // 火力增强时速度更快
-        const x = gameState.plane.x + 30;  // 从飞机前端发射
-        const y = gameState.plane.y;
-        
-        gameState.bullets.push({
-            x,
-            y,
-            size,
-            speed,
-            damage
-        });
-        
-        // 如果有跟踪导弹能力且冷却结束
-        if (gameState.plane.powerups.homingMissiles > Date.now() && 
-            Math.random() > 0.7) {  // 70%概率发射跟踪导弹
-            requestAnimationFrame(createHomingMissile);
-        }
-        
-        // 如果弹药不是无限的，减少弹药
-        if (gameState.ammo !== Infinity) {
-            gameState.ammo--;
-        }
-        
-        playSound('shootSound');
-        updateUI();
-        
-        return true;
+      if (gameState.ammo <= 0) return false;  // 没有弹药了
+      
+      const size = gameState.plane.powerups.rapidFire > Date.now() ? 10 : 8;  // 火力增强时子弹更大
+      const damage = gameState.plane.powerups.rapidFire > Date.now() ? 2 : 1;  // 火力增强时伤害更高
+      const speed = gameState.plane.powerups.rapidFire > Date.now() ? 18 : 15;  // 火力增强时速度更快
+      const x = gameState.plane.x + 30;  // 从飞机前端发射
+      const y = gameState.plane.y;
+      
+      gameState.bullets.push({
+        x,
+        y,
+        size,
+        speed,
+        damage
+      });
+      
+      // 如果有跟踪导弹能力且冷却结束
+      if (gameState.plane.powerups.homingMissiles > Date.now() && 
+          Math.random() > 0.7) {  // 70%概率发射跟踪导弹
+        requestAnimationFrame(createHomingMissile);
+      }
+      
+      // 如果弹药不是无限的，减少弹药
+      if (gameState.ammo !== Infinity) {
+        gameState.ammo--;
+      }
+      
+      playSound('shootSound');
+      updateUI();
+      
+      return true;
     }
 
     // 创建爆炸效果
     function createExplosion(x, y) {
-        gameState.explosions.push({
-          x,
-          y,
-          size: 0,
-          maxSize: Math.random() * 40 + 40,
-          alpha: 1
-          });
-          createParticles(x, y, 20, '#ff6600');
-          playSound('explosionSound');
+      gameState.explosions.push({
+        x,
+        y,
+        size: 0,
+        maxSize: Math.random() * 40 + 40,
+        alpha: 1
+      });
+      createParticles(x, y, 20, '#ff6600');
+      playSound('explosionSound');
     }
 
-  // 检测碰撞
-function checkCollision(rect1, rect2) {
-    return (
+    // 检测碰撞
+    function checkCollision(rect1, rect2) {
+      return (
         rect1.x < rect2.x + rect2.width &&
         rect1.x + rect1.width > rect2.x &&
         rect1.y < rect2.y + rect2.height &&
         rect1.y + rect1.height > rect2.y
-    );
-}
+      );
+    }
 
-// 游戏结束
-function endGame() {
-    gameState.gameOver = true;
-    gameUI.classList.add('hidden');
-    gameOverScreen.classList.remove('hidden');
-    finalScore.textContent = gameState.score;
-    
-    // 更新最高分
-    if (gameState.score > gameState.highScore) {
+    // 游戏结束
+    function endGame() {
+      gameState.gameOver = true;
+      gameUI.classList.add('hidden');
+      gameOverScreen.classList.remove('hidden');
+      finalScore.textContent = gameState.score;
+      
+      // 更新最高分
+      if (gameState.score > gameState.highScore) {
         gameState.highScore = gameState.score;
         localStorage.setItem('highScore', gameState.highScore);
         achievementsDisplay.innerHTML += `<div class="text-yellow-400 mb-2">🎉 新纪录!</div>`;
-    }
-    
-    // 显示成就
-    if (!gameState.achievements.firstBlood) {
+      }
+      
+      // 显示成就
+      if (!gameState.achievements.firstBlood) {
         achievementsDisplay.innerHTML += `<div class="text-green-400 mb-2">🏆 首次击杀!</div>`;
-    }
-    if (!gameState.achievements.combo5) {
+      }
+      if (!gameState.achievements.combo5) {
         achievementsDisplay.innerHTML += `<div class="text-blue-400 mb-2">🔥 连续5次击杀!</div>`;
-    }
-    if (!gameState.achievements.noDamage && gameState.lives === 3) {
+      }
+      if (!gameState.achievements.noDamage && gameState.lives === 3) {
         achievementsDisplay.innerHTML += `<div class="text-purple-400 mb-2">🛡️ 无伤通关!</div>`;
-    }
-    if (!gameState.achievements.bossSlayer && gameState.bossActive) {
+      }
+      if (!gameState.achievements.bossSlayer && gameState.bossActive) {
         achievementsDisplay.innerHTML += `<div class="text-red-400 mb-2">👹 Boss杀手!</div>`;
+      }
+      
+      // 隐藏触摸控制按钮
+      leftBtn.classList.add('hidden');
+      rightBtn.classList.add('hidden');
+      upBtn.classList.add('hidden');
+      downBtn.classList.add('hidden');
+      fireBtn.classList.add('hidden');
+      joystick.classList.add('hidden');
+      
+      bgMusic.pause();
     }
-    
-    // 隐藏触摸控制按钮
-    leftBtn.classList.add('hidden');
-    rightBtn.classList.add('hidden');
-    upBtn.classList.add('hidden');
-    downBtn.classList.add('hidden');
-    fireBtn.classList.add('hidden');
-    joystick.classList.add('hidden');
-    
-    bgMusic.pause();
-}
 
-// 游戏主循环
-function gameLoop(timestamp) {
-    if (!gameState.started || gameState.gameOver) return;
-    
-    // 清除画布
-    ctx.clearRect(0, 0, canvas.width, canvas.height);
-    
-    // 更新游戏状态
-    updateGame(timestamp);
-    
-    // 绘制游戏元素
-    drawGame();
-    
-    // 继续循环
-    requestAnimationFrame(gameLoop);
-}
+    // 游戏主循环
+    function gameLoop(timestamp) {
+      if (!gameState.started || gameState.gameOver) return;
+      
+      // 清除画布
+      ctx.clearRect(0, 0, canvas.width, canvas.height);
+      
+      // 更新游戏状态
+      updateGame(timestamp);
+      
+      // 绘制游戏元素
+      drawGame();
+      
+      // 继续循环
+      requestAnimationFrame(gameLoop);
+    }
 
-// 更新游戏状态
-function updateGame(timestamp) {
-    // 随着分数增加难度
-    gameState.difficulty = 1 + Math.min(gameState.score / 1000, 3);
-    
-    // 检查Boss生成条件
-    if (!gameState.bossActive && 
-        gameState.score > 0 && 
-        gameState.score % 5000 === 0 && 
-        timestamp - gameState.lastBossSpawnTime > 30000) { // 每5000分且30秒内未生成Boss
+    // 更新游戏状态
+    function updateGame(timestamp) {
+      // 随着分数增加难度
+      gameState.difficulty = 1 + Math.min(gameState.score / 1000, 3);
+      
+      // 检查Boss生成条件
+      if (!gameState.bossActive && 
+          gameState.score > 0 && 
+          gameState.score % 5000 === 0 && 
+          timestamp - gameState.lastBossSpawnTime > 30000) { // 每5000分且30秒内未生成Boss
         createBoss();
-    }
-    
-    // 时间减速因子
-    const timeSlowFactor = gameState.timeSlow > Date.now() ? 0.5 : 1;
-    
-    // 处理开火
-    if ((gameState.keys.Space || gameState.isFiring) && 
-        timestamp - gameState.plane.lastFireTime > gameState.plane.fireRate) {  // 射击冷却
+      }
+      
+      // 时间减速因子
+      const timeSlowFactor = gameState.timeSlow > Date.now() ? 0.5 : 1;
+      
+      // 处理开火
+      if ((gameState.keys.Space || gameState.isFiring) && 
+          timestamp - gameState.plane.lastFireTime > gameState.plane.fireRate) {  // 射击冷却
         createBullet();
         gameState.plane.lastFireTime = timestamp;
-    }
-    
-    // 敌人射击
-    if (timestamp - gameState.lastEnemyShootTime > 1000 / gameState.difficulty) {
+      }
+      
+      // 敌人射击
+      if (timestamp - gameState.lastEnemyShootTime > 1000 / gameState.difficulty) {
         gameState.obstacles.forEach(obstacle => {
-            if (obstacle.canShoot && timestamp - obstacle.lastShootTime > obstacle.shootCooldown) {
-                createEnemyBullet(obstacle.x - obstacle.width/2, obstacle.y);
-                obstacle.lastShootTime = timestamp;
-            }
+          if (obstacle.canShoot && timestamp - obstacle.lastShootTime > obstacle.shootCooldown) {
+            createEnemyBullet(obstacle.x - obstacle.width/2, obstacle.y);
+            obstacle.lastShootTime = timestamp;
+          }
         });
         gameState.lastEnemyShootTime = timestamp;
-    }
-    
-    // 更新敌人子弹
-    gameState.enemyBullets.forEach(bullet => {
+      }
+      
+      // 更新敌人子弹
+      gameState.enemyBullets.forEach(bullet => {
         bullet.x += Math.cos(bullet.angle) * bullet.speed * timeSlowFactor;
         bullet.y += Math.sin(bullet.angle) * bullet.speed * timeSlowFactor;
-    });
-    gameState.enemyBullets = gameState.enemyBullets.filter(bullet => 
+      });
+      gameState.enemyBullets = gameState.enemyBullets.filter(bullet => 
         bullet.x > 0 && bullet.x < canvas.width && 
         bullet.y > 0 && bullet.y < canvas.height
-    );
-    
-    // 检查道具是否过期
-    if (gameState.plane.powerups.rapidFire > 0 && gameState.plane.powerups.rapidFire < Date.now()) {
+      );
+      
+      // 检查道具是否过期
+      if (gameState.plane.powerups.rapidFire > 0 && gameState.plane.powerups.rapidFire < Date.now()) {
         gameState.plane.powerups.rapidFire = 0;
         gameState.plane.fireRate = 200;  // 恢复默认射击速度
         createEffect('火力增强结束', 'red', 1500);
-    }
-    
-    if (gameState.plane.powerups.homingMissiles > 0 && gameState.plane.powerups.homingMissiles < Date.now()) {
+      }
+      
+      if (gameState.plane.powerups.homingMissiles > 0 && gameState.plane.powerups.homingMissiles < Date.now()) {
         gameState.plane.powerups.homingMissiles = 0;
         createEffect('跟踪导弹结束', 'purple', 1500);
-    }
-    
-    if (gameState.plane.hasShield && gameState.plane.shieldDuration < Date.now()) {
+      }
+      
+      if (gameState.plane.hasShield && gameState.plane.shieldDuration < Date.now()) {
         gameState.plane.hasShield = false;
         createEffect('保护罩消失', 'blue', 1500);
-    }
-    
-    if (gameState.timeSlow > 0 && gameState.timeSlow < Date.now()) {
+      }
+      
+      if (gameState.timeSlow > 0 && gameState.timeSlow < Date.now()) {
         gameState.timeSlow = 0;
         createEffect('时间恢复正常', 'cyan', 1500);
-    }
-    
-    if (gameState.doubleScore > 0 && gameState.doubleScore < Date.now()) {
+      }
+      
+      if (gameState.doubleScore > 0 && gameState.doubleScore < Date.now()) {
         gameState.doubleScore = 0;
         createEffect('双倍分数结束', 'pink', 1500);
-    }
-    
-    // 更新飞机速度
-    if (gameState.keys.ArrowUp || gameState.keys.ArrowDown) {
+      }
+      
+      // 更新飞机速度
+      if (gameState.keys.ArrowUp || gameState.keys.ArrowDown) {
         gameState.speed = Math.max(50, 
-            Math.min(200, 
-                gameState.speed + (gameState.keys.ArrowUp ? 0.5 : -0.5)
-            )
+          Math.min(200, 
+            gameState.speed + (gameState.keys.ArrowUp ? 0.5 : -0.5)
+          )
         );
-    }
-    
-    // 更新水平方向移动
-    if (gameState.keys.ArrowLeft || gameState.joystickAngle < -Math.PI/4) {
+      }
+      
+      // 更新水平方向移动
+      if (gameState.keys.ArrowLeft || gameState.joystickAngle < -Math.PI/4) {
         gameState.plane.rotation = Math.max(gameState.plane.rotation - 2, -20);
         gameState.plane.velocity = Math.max(gameState.plane.velocity - 0.5, -5);
-    } else if (gameState.keys.ArrowRight || gameState.joystickAngle > Math.PI/4) {
+      } else if (gameState.keys.ArrowRight || gameState.joystickAngle > Math.PI/4) {
         gameState.plane.rotation = Math.min(gameState.plane.rotation + 2, 20);
         gameState.plane.velocity = Math.min(gameState.plane.velocity + 0.5, 5);
-    } else {
+      } else {
         // 如果没有按左右键，飞机逐渐回正
         gameState.plane.rotation *= 0.95;
         gameState.plane.velocity *= 0.95;
         if (Math.abs(gameState.plane.rotation) < 0.5) gameState.plane.rotation = 0;
         if (Math.abs(gameState.plane.velocity) < 0.5) gameState.plane.velocity = 0;
-    }
-    
-    // 更新垂直方向移动
-    if (gameState.keys.ArrowUp || (gameState.joystickActive && gameState.joystickAngle < -Math.PI/4 && gameState.joystickAngle > -3*Math.PI/4)) {
+      }
+      
+      // 更新垂直方向移动
+      if (gameState.keys.ArrowUp || (gameState.joystickActive && gameState.joystickAngle < -Math.PI/4 && gameState.joystickAngle > -3*Math.PI/4)) {
         gameState.plane.verticalVelocity = Math.max(gameState.plane.verticalVelocity - 0.5, -5);
-    } else if (gameState.keys.ArrowDown || (gameState.joystickActive && gameState.joystickAngle > Math.PI/4 && gameState.joystickAngle < 3*Math.PI/4)) {
+      } else if (gameState.keys.ArrowDown || (gameState.joystickActive && gameState.joystickAngle > Math.PI/4 && gameState.joystickAngle < 3*Math.PI/4)) {
         gameState.plane.verticalVelocity = Math.min(gameState.plane.verticalVelocity + 0.5, 5);
-    } else {
+      } else {
         // 如果没有按上下键，垂直速度逐渐归零
         gameState.plane.verticalVelocity *= 0.95;
         if (Math.abs(gameState.plane.verticalVelocity) < 0.5) gameState.plane.verticalVelocity = 0;
-    }
-    
-    // 更新飞机位置
-    gameState.plane.x += gameState.plane.velocity;
-    gameState.plane.y += gameState.plane.verticalVelocity;
-    
-    // 限制飞机在屏幕内
-    gameState.plane.x = Math.max(gameState.plane.width / 2, Math.min(gameState.plane.x, canvas.width - gameState.plane.width / 2));
-    gameState.plane.y = Math.max(gameState.plane.height / 2, Math.min(gameState.plane.y, canvas.height - gameState.plane.height / 2));
-    
-    // 生成新星星
-    if (timestamp - gameState.lastStarTime > 2000 / gameState.difficulty) {
+      }
+      
+      // 更新飞机位置
+      gameState.plane.x += gameState.plane.velocity;
+      gameState.plane.y += gameState.plane.verticalVelocity;
+      
+      // 限制飞机在屏幕内
+      gameState.plane.x = Math.max(gameState.plane.width / 2, Math.min(gameState.plane.x, canvas.width - gameState.plane.width / 2));
+      gameState.plane.y = Math.max(gameState.plane.height / 2, Math.min(gameState.plane.y, canvas.height - gameState.plane.height / 2));
+      
+      // 生成新星星
+      if (timestamp - gameState.lastStarTime > 2000 / gameState.difficulty) {
         createStar();
         gameState.lastStarTime = timestamp;
-    }
-    
-    // 生成新障碍物
-    if (timestamp - gameState.lastObstacleTime > 1500 / gameState.difficulty * timeSlowFactor) {
+      }
+      
+      // 生成新障碍物
+      if (timestamp - gameState.lastObstacleTime > 1500 / gameState.difficulty * timeSlowFactor) {
         createObstacle();
         gameState.lastObstacleTime = timestamp;
-    }
-    
-    // 生成新云朵
-    if (timestamp - gameState.lastCloudTime > 1000 * timeSlowFactor) {
+      }
+      
+      // 生成新云朵
+      if (timestamp - gameState.lastCloudTime > 1000 * timeSlowFactor) {
         createCloud();
         gameState.lastCloudTime = timestamp;
-    }
-    
-    // 生成新道具 (每5-8秒)
-    if (timestamp - gameState.lastPowerupTime > (Math.random() * 3000 + 5000) / gameState.difficulty * timeSlowFactor) {
+      }
+      
+      // 生成新道具 (每5-8秒)
+      if (timestamp - gameState.lastPowerupTime > (Math.random() * 3000 + 5000) / gameState.difficulty * timeSlowFactor) {
         createPowerup();
         gameState.lastPowerupTime = timestamp;
-    }
-    
-    // 更新粒子
-    gameState.particles.forEach(particle => {
+      }
+      
+      // 更新粒子
+      gameState.particles.forEach(particle => {
         particle.x += particle.speedX;
         particle.y += particle.speedY;
         particle.life--;
-    });
-    gameState.particles = gameState.particles.filter(p => p.life > 0);
-    
-    // 更新特效
-    gameState.effects = gameState.effects.filter(effect => 
+      });
+      gameState.particles = gameState.particles.filter(p => p.life > 0);
+      
+      // 更新特效
+      gameState.effects = gameState.effects.filter(effect => 
         Date.now() - effect.startTime < effect.duration
-    );
-    
-    // 更新碎片
-    gameState.debris.forEach(debris => {
+      );
+      
+      // 更新碎片
+      gameState.debris.forEach(debris => {
         debris.x += debris.speedX;
         debris.y += debris.speedY;
         debris.rotation += debris.rotationSpeed;
         debris.opacity -= 0.02;
-    });
-    gameState.debris = gameState.debris.filter(debris => debris.opacity > 0);
-    
-    // 更新跟踪导弹
-    gameState.homingMissiles.forEach(missile => {
+      });
+      gameState.debris = gameState.debris.filter(debris => debris.opacity > 0);
+      
+      // 更新跟踪导弹
+      gameState.homingMissiles.forEach(missile => {
         if (!missile.target || missile.target.hit) {
-            // 如果没有目标或目标已被击中，则直线飞行
-            missile.x += Math.cos(missile.angle) * missile.speed;
-            missile.y += Math.sin(missile.angle) * missile.speed;
+          // 如果没有目标或目标已被击中，则直线飞行
+          missile.x += Math.cos(missile.angle) * missile.speed;
+          missile.y += Math.sin(missile.angle) * missile.speed;
         } else {
-            // 计算新的角度以跟踪目标
-            const dx = missile.target.x - missile.x;
-            const dy = missile.target.y - missile.y;
-            const targetAngle = Math.atan2(dy, dx);
-            
-            // 平滑转向
-            let angleDiff = targetAngle - missile.angle;
-            if (angleDiff > Math.PI) angleDiff -= Math.PI * 2;
-            if (angleDiff < -Math.PI) angleDiff += Math.PI * 2;
-            
-            missile.angle += angleDiff * 0.1;
-            missile.x += Math.cos(missile.angle) * missile.speed;
-            missile.y += Math.sin(missile.angle) * missile.speed;
-            
-            // 检测碰撞
-            const missileRect = {
-                x: missile.x - missile.size / 2,
-                y: missile.y - missile.size / 2,
-                width: missile.size,
-                height: missile.size
-            };
-            
-            const targetRect = {
-                x: missile.target.x - missile.target.collisionWidth / 2,
-                y: missile.target.y - missile.target.collisionHeight / 2,
-                width: missile.target.collisionWidth,
-                height: missile.target.collisionHeight
-            };
+          // 计算新的角度以跟踪目标
+          const dx = missile.target.x - missile.x;
+          const dy = missile.target.y - missile.y;
+          const targetAngle = Math.atan2(dy, dx);
+          
+          // 平滑转向
+          let angleDiff = targetAngle - missile.angle;
+          if (angleDiff > Math.PI) angleDiff -= Math.PI * 2;
+          if (angleDiff < -Math.PI) angleDiff += Math.PI * 2;
+          
+          missile.angle += angleDiff * 0.1;
+          missile.x += Math.cos(missile.angle) * missile.speed;
+          missile.y += Math.sin(missile.angle) * missile.speed;
+          
+          // 检测碰撞
+          const missileRect = {
+            x: missile.x - missile.size / 2,
+            y: missile.y - missile.size / 2,
+            width: missile.size,
+            height: missile.size
+          };
+          
+          const targetRect = {
+            x: missile.target.x - missile.target.collisionWidth / 2,
+            y: missile.target.y - missile.target.collisionHeight / 2,
+            width: missile.target.collisionWidth,
+            height: missile.target.collisionHeight
+          };
+          
+          if (checkCollision(missileRect, targetRect)) {
+            missile.hit = true;
+            missile.target.health -= 3;  // 导弹伤害更高
             
-            if (checkCollision(missileRect, targetRect)) {
-                missile.hit = true;
-                missile.target.health -= 3;  // 导弹伤害更高
-                
-                if (missile.target.health <= 0) {
-                    missile.target.hit = true;
-                    const scoreBonus = missile.target.isBoss ? 500 : (missile.target.isLarge ? 30 : 15);
-                    gameState.score += gameState.doubleScore > Date.now() ? scoreBonus * 2 : scoreBonus;
-                    updateUI();
-                    
-                    // 如果是大型障碍物但不是Boss，分裂成小型障碍物
-                    if (missile.target.isLarge && !missile.target.isBoss) {
-                        for (let i = 0; i < 3; i++) {
-                            gameState.obstacles.push({
-                                x: missile.target.x + (Math.random() - 0.5) * 50,
-                                y: missile.target.y + (Math.random() - 0.5) * 50,
-                                width: missile.target.width / 2,
-                                height: missile.target.height / 2,
-                                collisionWidth: missile.target.collisionWidth / 2,
-                                collisionHeight: missile.target.collisionHeight / 2,
-                                speed: missile.target.speed * 1.2,
-                                type: missile.target.type,
-                                health: 1,
-                                maxHealth: 1,
-                                isLarge: false
-                            });
-                        }
-                    }
-                    
-                    // 如果是Boss，标记Boss已击败
-                    if (missile.target.isBoss) {
-                        gameState.bossActive = false;
-                        gameState.achievements.bossSlayer = true;
-                    }
-                    
-                    // 创建碎片效果
-                    createDebris(missile.target, missile.target.isBoss ? 30 : 12);
+            if (missile.target.health <= 0) {
+              missile.target.hit = true;
+              const scoreBonus = missile.target.isBoss ? 500 : (missile.target.isLarge ? 30 : 15);
+              gameState.score += gameState.doubleScore > Date.now() ? scoreBonus * 2 : scoreBonus;
+              updateUI();
+              
+              // 如果是大型障碍物但不是Boss，分裂成小型障碍物
+              if (missile.target.isLarge && !missile.target.isBoss) {
+                for (let i = 0; i < 3; i++) {
+                  gameState.obstacles.push({
+                    x: missile.target.x + (Math.random() - 0.5) * 50,
+                    y: missile.target.y + (Math.random() - 0.5) * 50,
+                    width: missile.target.width / 2,
+                    height: missile.target.height / 2,
+                    collisionWidth: missile.target.collisionWidth / 2,
+                    collisionHeight: missile.target.collisionHeight / 2,
+                    speed: missile.target.speed * 1.2,
+                    type: missile.target.type,
+                    health: 1,
+                    maxHealth: 1,
+                    isLarge: false
+                  });
                 }
-                
-                // 创建爆炸效果
-                createExplosion(missile.x, missile.y);
+              }
+              
+              // 如果是Boss，标记Boss已击败
+              if (missile.target.isBoss) {
+                gameState.bossActive = false;
+                gameState.achievements.bossSlayer = true;
+              }
+              
+              // 创建碎片效果
+              createDebris(missile.target, missile.target.isBoss ? 30 : 12);
             }
+            
+            // 创建爆炸效果
+            createExplosion(missile.x, missile.y);
+          }
         }
-    });
-    gameState.homingMissiles = gameState.homingMissiles.filter(missile => 
+      });
+      gameState.homingMissiles = gameState.homingMissiles.filter(missile => 
         missile.x < canvas.width && missile.x > 0 && 
         missile.y < canvas.height && missile.y > 0 && 
         !missile.hit
-    );
-    
-    // 更新云朵
-    gameState.clouds.forEach(cloud => {
+      );
+      
+      // 更新云朵
+      gameState.clouds.forEach(cloud => {
         cloud.x -= cloud.speed * timeSlowFactor;
-    });
-    gameState.clouds = gameState.clouds.filter(cloud => cloud.x + cloud.size > 0);
-    
-    // 更新道具
-    gameState.powerups.forEach(powerup => {
+      });
+      gameState.clouds = gameState.clouds.filter(cloud => cloud.x + cloud.size > 0);
+      
+      // 更新道具
+      gameState.powerups.forEach(powerup => {
         powerup.x -= powerup.speed * timeSlowFactor;
         
         // 检测与飞机的碰撞
         const planeRect = {
-            x: gameState.plane.x - gameState.plane.width / 2,
-            y: gameState.plane.y - gameState.plane.height / 2,
-            width: gameState.plane.width,
-            height: gameState.plane.height
+          x: gameState.plane.x - gameState.plane.width / 2,
+          y: gameState.plane.y - gameState.plane.height / 2,
+          width: gameState.plane.width,
+          height: gameState.plane.height
         };
         
         const powerupRect = {
-            x: powerup.x - powerup.size / 2,
-            y: powerup.y - powerup.size / 2,
-            width: powerup.size,
-            height: powerup.size
+          x: powerup.x - powerup.size / 2,
+          y: powerup.y - powerup.size / 2,
+          width: powerup.size,
+          height: powerup.size
         };
         
         if (checkCollision(planeRect, powerupRect) && !gameState.gameOver) {
-            powerup.collected = true;
-            powerup.type.effect(gameState);
-            updateUI();
-            createParticles(powerup.x, powerup.y, 15, powerup.type.color);
+          powerup.collected = true;
+          powerup.type.effect(gameState);
+          updateUI();
+          createParticles(powerup.x, powerup.y, 15, powerup.type.color);
         }
-    });
-    gameState.powerups = gameState.powerups.filter(powerup => 
+      });
+      gameState.powerups = gameState.powerups.filter(powerup => 
         powerup.x + powerup.size > 0 && !powerup.collected
-    );
-    
-    // 更新子弹
-    gameState.bullets.forEach(bullet => {
+      );
+      
+      // 更新子弹
+      gameState.bullets.forEach(bullet => {
         bullet.x += bullet.speed * timeSlowFactor;
-    });
-    gameState.bullets = gameState.bullets.filter(bullet => bullet.x < canvas.width);
-    
-    // 检查敌人子弹与飞机的碰撞
-    gameState.enemyBullets.forEach(bullet => {
+      });
+      gameState.bullets = gameState.bullets.filter(bullet => bullet.x < canvas.width);
+      
+      // 检查敌人子弹与飞机的碰撞（修正：在if判断中增加了缺失的右括号）
+      gameState.enemyBullets.forEach(bullet => {
         const bulletRect = {
-            x: bullet.x - bullet.size / 2,
-            y: bullet.y - bullet.size / 2,
-            width: bullet.size,
-            height: bullet.size
+          x: bullet.x - bullet.size / 2,
+          y: bullet.y - bullet.size / 2,
+          width: bullet.size,
+          height: bullet.size
         };
-        
+
         const planeRect = {
-            x: gameState.plane.x - gameState.plane.width / 2,
-            y: gameState.plane.y - gameState.plane.height / 2,
-            width: gameState.plane.width,
-            height: gameState.plane.height
+          x: gameState.plane.x - gameState.plane.width / 2,
+          y: gameState.plane.y - gameState.plane.height / 2,
+          width: gameState.plane.width,
+          height: gameState.plane.height
         };
-        
-        if (checkCollision(bulletRect, planeRect) {
-            bullet.hit = true;
-            if (!gameState.plane.hasShield || gameState.plane.shieldDuration < Date.now()) {
-                gameState.lives--;
-                updateUI();
-                createExplosion(gameState.plane.x, gameState.plane.y);
-                
-                if (gameState.lives <= 0) {
-                    endGame();
-                }
-            } else {
-                // 保护罩被击中
-                createExplosion(bullet.x, bullet.y);
+
+        if (checkCollision(bulletRect, planeRect)) {
+          bullet.hit = true;
+          if (!gameState.plane.hasShield || gameState.plane.shieldDuration < Date.now()) {
+            gameState.lives--;
+            updateUI();
+            createExplosion(gameState.plane.x, gameState.plane.y);
+            
+            if (gameState.lives <= 0) {
+              endGame();
             }
+          } else {
+            // 保护罩被击中
+            createExplosion(bullet.x, bullet.y);
+          }
         }
-    });
-    gameState.enemyBullets = gameState.enemyBullets.filter(bullet => !bullet.hit);
-    
-    // 更新星星
-    gameState.stars.forEach(star => {
+      });
+      gameState.enemyBullets = gameState.enemyBullets.filter(bullet => !bullet.hit);
+      
+      // 更新星星
+      gameState.stars.forEach(star => {
         star.x -= star.speed * timeSlowFactor;
         star.rotation += star.rotationSpeed;
         
         // 检测碰撞
         const planeRect = {
-            x: gameState.plane.x - gameState.plane.width / 2,
-            y: gameState.plane.y - gameState.plane.height / 2,
-            width: gameState.plane.width,
-            height: gameState.plane.height
+          x: gameState.plane.x - gameState.plane.width / 2,
+          y: gameState.plane.y - gameState.plane.height / 2,
+          width: gameState.plane.width,
+          height: gameState.plane.height
         };
         
         const starRect = {
-            x: star.x - star.size / 2,
-            y: star.y - star.size / 2,
-            width: star.size,
-            height: star.size
+          x: star.x - star.size / 2,
+          y: star.y - star.size / 2,
+          width: star.size,
+          height: star.size
         };
         
         if (checkCollision(planeRect, starRect) && !gameState.gameOver) {
-            star.collected = true;
-            const scoreBonus = 10;
-            gameState.score += gameState.doubleScore > Date.now() ? scoreBonus * 2 : scoreBonus;
-            updateUI();
-            createParticles(star.x, star.y, 10, 'gold');
+          star.collected = true;
+          const scoreBonus = 10;
+          gameState.score += gameState.doubleScore > Date.now() ? scoreBonus * 2 : scoreBonus;
+          updateUI();
+          createParticles(star.x, star.y, 10, 'gold');
         }
-    });
-    gameState.stars = gameState.stars.filter(star => star.x + star.size > 0 && !star.collected);
-    
-    // 更新障碍物
-    let comboCount = 0; // 连续击杀计数器
-    gameState.obstacles.forEach(obstacle => {
+      });
+      gameState.stars = gameState.stars.filter(star => star.x + star.size > 0 && !star.collected);
+      
+      // 更新障碍物
+      let comboCount = 0; // 连续击杀计数器
+      gameState.obstacles.forEach(obstacle => {
         obstacle.x -= obstacle.speed * timeSlowFactor;
         
         // 检测与飞机的碰撞
         const planeRect = {
-            x: gameState.plane.x - gameState.plane.width / 2,
-            y: gameState.plane.y - gameState.plane.height / 2,
-            width: gameState.plane.width,
-            height: gameState.plane.height
+          x: gameState.plane.x - gameState.plane.width / 2,
+          y: gameState.plane.y - gameState.plane.height / 2,
+          width: gameState.plane.width,
+          height: gameState.plane.height
         };
         
         const obstacleRect = {
-            x: obstacle.x - obstacle.collisionWidth / 2,
-            y: obstacle.y - obstacle.collisionHeight / 2,
-            width: obstacle.collisionWidth,
-            height: obstacle.collisionHeight
+          x: obstacle.x - obstacle.collisionWidth / 2,
+          y: obstacle.y - obstacle.collisionHeight / 2,
+          width: obstacle.collisionWidth,
+          height: obstacle.collisionHeight
         };
         
         if (checkCollision(planeRect, obstacleRect) && !gameState.gameOver) {
-            // 如果有保护罩则不会受伤
-            if (!gameState.plane.hasShield || gameState.plane.shieldDuration < Date.now()) {
-                obstacle.hit = true;
-                gameState.lives--;
-                updateUI();
-                createExplosion(gameState.plane.x, gameState.plane.y);
-                
-                if (gameState.lives <= 0) {
-                    endGame();
-                }
-            } else {
-                // 保护罩被击中
-                obstacle.hit = true;
-                createExplosion(obstacle.x, obstacle.y);
-                createDebris(obstacle, 4);
+          // 如果有保护罩则不会受伤
+          if (!gameState.plane.hasShield || gameState.plane.shieldDuration < Date.now()) {
+            obstacle.hit = true;
+            gameState.lives--;
+            updateUI();
+            createExplosion(gameState.plane.x, gameState.plane.y);
+            
+            if (gameState.lives <= 0) {
+              endGame();
             }
+          } else {
+            // 保护罩被击中
+            obstacle.hit = true;
+            createExplosion(obstacle.x, obstacle.y);
+            createDebris(obstacle, 4);
+          }
         }
         
         // 检测与子弹的碰撞
         if (!obstacle.hit) {
-            const bulletHits = [];
+          const bulletHits = [];
+          
+          gameState.bullets.forEach((bullet, bulletIndex) => {
+            const bulletRect = {
+              x: bullet.x - bullet.size / 2,
+              y: bullet.y - bullet.size / 2,
+              width: bullet.size,
+              height: bullet.size
+            };
             
-            gameState.bullets.forEach((bullet, bulletIndex) => {
-                const bulletRect = {
-                    x: bullet.x - bullet.size / 2,
-                    y: bullet.y - bullet.size / 2,
-                    width: bullet.size,
-                    height: bullet.size
-                };
+            const obstacleCollisionRect = {
+              x: obstacle.x - obstacle.collisionWidth / 2,
+              y: obstacle.y - obstacle.collisionHeight / 2,
+              width: obstacle.collisionWidth,
+              height: obstacle.collisionHeight
+            };
+            
+            if (checkCollision(bulletRect, obstacleCollisionRect)) {
+              obstacle.health -= bullet.damage;
+              bulletHits.push(bulletIndex);
+              createExplosion(bullet.x, bullet.y);
+              
+              if (obstacle.health <= 0) {
+                obstacle.hit = true;
+                const scoreBonus = obstacle.isBoss ? 500 : (obstacle.isLarge ? 30 : 15);
+                gameState.score += gameState.doubleScore > Date.now() ? scoreBonus * 2 : scoreBonus;
+                updateUI();
+                comboCount++;
                 
-                const obstacleCollisionRect = {
-                    x: obstacle.x - obstacle.collisionWidth / 2,
-                    y: obstacle.y - obstacle.collisionHeight / 2,
-                    width: obstacle.collisionWidth,
-                    height: obstacle.collisionHeight
-                };
+                // 如果是大型障碍物但不是Boss，分裂成小型障碍物
+                if (obstacle.isLarge && !obstacle.isBoss) {
+                  for (let i = 0; i < 3; i++) {
+                    gameState.obstacles.push({
+                      x: obstacle.x + (Math.random() - 0.5) * 50,
+                      y: obstacle.y + (Math.random() - 0.5) * 50,
+                      width: obstacle.width / 2,
+                      height: obstacle.height / 2,
+                      collisionWidth: obstacle.collisionWidth / 2,
+                      collisionHeight: obstacle.collisionHeight / 2,
+                      speed: obstacle.speed * 1.2,
+                      type: obstacle.type,
+                      health: 1,
+                      maxHealth: 1,
+                      isLarge: false
+                    });
+                  }
+                }
                 
-                if (checkCollision(bulletRect, obstacleCollisionRect)) {
-                    obstacle.health -= bullet.damage;
-                    bulletHits.push(bulletIndex);
-                    createExplosion(bullet.x, bullet.y);
-                    
-                    if (obstacle.health <= 0) {
-                        obstacle.hit = true;
-                        const scoreBonus = obstacle.isBoss ? 500 : (obstacle.isLarge ? 30 : 15);
-                        gameState.score += gameState.doubleScore > Date.now() ? scoreBonus * 2 : scoreBonus;
-                        updateUI();
-                        comboCount++;
-                        
-                        // 如果是大型障碍物但不是Boss，分裂成小型障碍物
-                        if (obstacle.isLarge && !obstacle.isBoss) {
-                            for (let i = 0; i < 3; i++) {
-                                gameState.obstacles.push({
-                                    x: obstacle.x + (Math.random() - 0.5) * 50,
-                                    y: obstacle.y + (Math.random() - 0.5) * 50,
-                                    width: obstacle.width / 2,
-                                    height: obstacle.height / 2,
-                                    collisionWidth: obstacle.collisionWidth / 2,
-                                    collisionHeight: obstacle.collisionHeight / 2,
-                                    speed: obstacle.speed * 1.2,
-                                    type: obstacle.type,
-                                    health: 1,
-                                    maxHealth: 1,
-                                    isLarge: false
-                                });
-                            }
-                        }
-                        
-                        // 如果是Boss，标记Boss已击败
-                        if (obstacle.isBoss) {
-                            gameState.bossActive = false;
-                            gameState.achievements.bossSlayer = true;
-                        }
-                        
-                        // 创建碎片效果
-                        createDebris(obstacle, obstacle.isBoss ? 30 : 8);
-                        
-                        // 首次击杀成就
-                        if (!gameState.achievements.firstBlood) {
-                            gameState.achievements.firstBlood = true;
-                            createEffect('首次击杀!', 'green', 2000);
-                        }
-                    }
+                // 如果是Boss，标记Boss已击败
+                if (obstacle.isBoss) {
+                  gameState.bossActive = false;
+                  gameState.achievements.bossSlayer = true;
                 }
-            });
-            
-            // 连续击杀成就
-            if (comboCount >= 5 && !gameState.achievements.combo5) {
-                gameState.achievements.combo5 = true;
-                createEffect('连续5次击杀!', 'blue', 2000);
-            }
-            
-            // 移除已经击中的子弹
-            for (let i = bulletHits.length - 1; i >= 0; i--) {
-                gameState.bullets.splice(bulletHits[i], 1);
+                
+                // 创建碎片效果
+                createDebris(obstacle, obstacle.isBoss ? 30 : 8);
+                
+                // 首次击杀成就
+                if (!gameState.achievements.firstBlood) {
+                  gameState.achievements.firstBlood = true;
+                  createEffect('首次击杀!', 'green', 2000);
+                }
+              }
             }
+          });
+          
+          // 连续击杀成就
+          if (comboCount >= 5 && !gameState.achievements.combo5) {
+            gameState.achievements.combo5 = true;
+            createEffect('连续5次击杀!', 'blue', 2000);
+          }
+          
+          // 移除已经击中的子弹
+          for (let i = bulletHits.length - 1; i >= 0; i--) {
+            gameState.bullets.splice(bulletHits[i], 1);
+          }
         }
-    });
-    gameState.obstacles = gameState.obstacles.filter(obstacle => obstacle.x + obstacle.width > 0 && !obstacle.hit);
-    
-    // 更新爆炸效果
-    gameState.explosions.forEach(explosion => {
+      });
+      gameState.obstacles = gameState.obstacles.filter(obstacle => obstacle.x + obstacle.width > 0 && !obstacle.hit);
+      
+      // 更新爆炸效果
+      gameState.explosions.forEach(explosion => {
         explosion.size += 2;
         explosion.alpha -= 0.02;
-    });
-    gameState.explosions = gameState.explosions.filter(explosion => explosion.alpha > 0);
-}
+      });
+      gameState.explosions = gameState.explosions.filter(explosion => explosion.alpha > 0);
+    }
 
-// 绘制游戏元素
-function drawGame() {
-    // 绘制背景渐变
-    const gradient = ctx.createLinearGradient(0, 0, 0, canvas.height);
-    gradient.addColorStop(0, '#1e3c72');
-    gradient.addColorStop(1, '#2a5298');
-    ctx.fillStyle = gradient;
-    ctx.fillRect(0, 0, canvas.width, canvas.height);
-    
-    // 绘制云朵
-    gameState.clouds.forEach(cloud => {
+    // 绘制游戏元素
+    function drawGame() {
+      // 绘制背景渐变
+      const gradient = ctx.createLinearGradient(0, 0, 0, canvas.height);
+      gradient.addColorStop(0, '#1e3c72');
+      gradient.addColorStop(1, '#2a5298');
+      ctx.fillStyle = gradient;
+      ctx.fillRect(0, 0, canvas.width, canvas.height);
+      
+      // 绘制云朵
+      gameState.clouds.forEach(cloud => {
         cloud.parts.forEach(part => {
-            ctx.beginPath();
-            ctx.arc(
-                cloud.x + part.offsetX,
-                cloud.y + part.offsetY,
-                part.size / 2,
-                0,
-                Math.PI * 2
-            );
-            ctx.fillStyle = `rgba(255, 255, 255, ${0.7 + Math.random() * 0.3})`;
-            ctx.fill();
+          ctx.beginPath();
+          ctx.arc(
+            cloud.x + part.offsetX,
+            cloud.y + part.offsetY,
+            part.size / 2,
+            0,
+            Math.PI * 2
+          );
+          ctx.fillStyle = `rgba(255, 255, 255, ${0.7 + Math.random() * 0.3})`;
+          ctx.fill();
         });
-    });
-    
-    // 绘制粒子
-    gameState.particles.forEach(particle => {
+      });
+      
+      // 绘制粒子
+      gameState.particles.forEach(particle => {
         ctx.beginPath();
         ctx.arc(particle.x, particle.y, particle.size, 0, Math.PI * 2);
         ctx.fillStyle = particle.color;
         ctx.globalAlpha = particle.life / 100;
         ctx.fill();
         ctx.globalAlpha = 1;
-    });
-    
-    // 绘制碎片
-    gameState.debris.forEach(debris => {
+      });
+      
+      // 绘制碎片
+      gameState.debris.forEach(debris => {
         ctx.save();
         ctx.translate(debris.x, debris.y);
         ctx.rotate(debris.rotation);
         
         ctx.fillStyle = `rgba(100, 100, 100, ${debris.opacity})`;
         ctx.fillRect(
-            -debris.width / 2,
-            -debris.height / 2,
-            debris.width,
-            debris.height
+          -debris.width / 2,
+          -debris.height / 2,
+          debris.width,
+          debris.height
         );
         
         ctx.restore();
-    });
-    
-    // 绘制敌人子弹
-    gameState.enemyBullets.forEach(bullet => {
+      });
+      
+      // 绘制敌人子弹
+      gameState.enemyBullets.forEach(bullet => {
         const gradient = ctx.createRadialGradient(
-            bullet.x, bullet.y, 0,
-            bullet.x, bullet.y, bullet.size
+          bullet.x, bullet.y, 0,
+          bullet.x, bullet.y, bullet.size
         );
         gradient.addColorStop(0, '#f00');
         gradient.addColorStop(1, '#800');
@@ -1580,10 +1585,10 @@ function drawGame() {
         ctx.strokeStyle = 'rgba(255, 100, 100, 0.8)';
         ctx.lineWidth = bullet.size / 2;
         ctx.stroke();
-    });
-    
-    // 绘制道具
-    gameState.powerups.forEach(powerup => {
+      });
+      
+      // 绘制道具
+      gameState.powerups.forEach(powerup => {
         ctx.save();
         ctx.translate(powerup.x, powerup.y);
         
@@ -1598,7 +1603,7 @@ function drawGame() {
         ctx.fill();
         ctx.globalAlpha = 1;
         
-        // 绘制道具图标
+        // 绘制道具图标背景
         ctx.fillStyle = powerup.type.color;
         ctx.beginPath();
         ctx.arc(0, 0, powerup.size / 2 - 3, 0, Math.PI * 2);
@@ -1609,7 +1614,7 @@ function drawGame() {
         ctx.lineWidth = 2;
         ctx.stroke();
         
-        // 绘制道具图标
+        // 绘制道具图标（使用FontAwesome图标Unicode）
         ctx.fillStyle = 'white';
         ctx.font = '20px FontAwesome';
         ctx.textAlign = 'center';
@@ -1617,10 +1622,10 @@ function drawGame() {
         ctx.fillText(String.fromCharCode(parseInt(getIconCode(powerup.type.icon), 16)), 0, 1);
         
         ctx.restore();
-    });
-    
-    // 绘制跟踪导弹
-    gameState.homingMissiles.forEach(missile => {
+      });
+      
+      // 绘制跟踪导弹
+      gameState.homingMissiles.forEach(missile => {
         ctx.save();
         ctx.translate(missile.x, missile.y);
         ctx.rotate(missile.angle);
@@ -1644,13 +1649,13 @@ function drawGame() {
         ctx.fill();
         
         ctx.restore();
-    });
-    
-    // 绘制子弹
-    gameState.bullets.forEach(bullet => {
+      });
+      
+      // 绘制子弹
+      gameState.bullets.forEach(bullet => {
         const gradient = ctx.createRadialGradient(
-            bullet.x, bullet.y, 0,
-            bullet.x, bullet.y, bullet.size
+          bullet.x, bullet.y, 0,
+          bullet.x, bullet.y, bullet.size
         );
         gradient.addColorStop(0, '#ff0');
         gradient.addColorStop(1, '#f80');
@@ -1667,37 +1672,37 @@ function drawGame() {
         ctx.strokeStyle = 'rgba(255, 200, 0, 0.8)';
         ctx.lineWidth = bullet.size / 2;
         ctx.stroke();
-    });
-    
-    // 绘制星星
-    gameState.stars.forEach(star => {
+      });
+      
+      // 绘制星星
+      gameState.stars.forEach(star => {
         ctx.save();
         ctx.translate(star.x, star.y);
         ctx.rotate(star.rotation);
         
         ctx.beginPath();
         for (let i = 0; i < 5; i++) {
-            const angle = (i * 2 * Math.PI / 5) - Math.PI / 2;
-            const innerAngle = angle + Math.PI / 5;
-            const outerRadius = star.size / 2;
-            const innerRadius = star.size / 4;
-            
-            if (i === 0) {
-                ctx.moveTo(
-                    Math.cos(angle) * outerRadius,
-                    Math.sin(angle) * outerRadius
-                );
-            } else {
-                ctx.lineTo(
-                    Math.cos(angle) * outerRadius,
-                    Math.sin(angle) * outerRadius
-                );
-            }
-            
+          const angle = (i * 2 * Math.PI / 5) - Math.PI / 2;
+          const innerAngle = angle + Math.PI / 5;
+          const outerRadius = star.size / 2;
+          const innerRadius = star.size / 4;
+          
+          if (i === 0) {
+            ctx.moveTo(
+              Math.cos(angle) * outerRadius,
+              Math.sin(angle) * outerRadius
+            );
+          } else {
             ctx.lineTo(
-                Math.cos(innerAngle) * innerRadius,
-                Math.sin(innerAngle) * innerRadius
+              Math.cos(angle) * outerRadius,
+              Math.sin(angle) * outerRadius
             );
+          }
+          
+          ctx.lineTo(
+            Math.cos(innerAngle) * innerRadius,
+            Math.sin(innerAngle) * innerRadius
+          );
         }
         ctx.closePath();
         
@@ -1710,180 +1715,180 @@ function drawGame() {
         ctx.fill();
         
         ctx.restore();
-    });
-    
-    // 绘制障碍物
-    gameState.obstacles.forEach(obstacle => {
+      });
+      
+      // 绘制障碍物
+      gameState.obstacles.forEach(obstacle => {
         ctx.save();
         ctx.translate(obstacle.x, obstacle.y);
         
         if (obstacle.type === 'rectangle') {
-            // 绘制健康条 (如果是矩形障碍物)
-            if (obstacle.health < obstacle.maxHealth) {
-                const healthBarWidth = obstacle.isBoss ? 100 : 20;
-                ctx.fillStyle = 'red';
-                ctx.fillRect(
-                    -healthBarWidth / 2,
-                    -obstacle.height / 2 - 15,
-                    healthBarWidth,
-                    5
-                );
-                ctx.fillStyle = obstacle.isBoss ? 'purple' : 'lime';
-                ctx.fillRect(
-                    -healthBarWidth / 2,
-                    -obstacle.height / 2 - 15,
-                    healthBarWidth * (obstacle.health / obstacle.maxHealth),
-                    5
-                );
-            }
+          // 绘制健康条 (如果是矩形障碍物)
+          if (obstacle.health < obstacle.maxHealth) {
+            const healthBarWidth = obstacle.isBoss ? 100 : 20;
+            ctx.fillStyle = 'red';
+            ctx.fillRect(
+              -healthBarWidth / 2,
+              -obstacle.height / 2 - 15,
+              healthBarWidth,
+              5
+            );
+            ctx.fillStyle = obstacle.isBoss ? 'purple' : 'lime';
+            ctx.fillRect(
+              -healthBarWidth / 2,
+              -obstacle.height / 2 - 15,
+              healthBarWidth * (obstacle.health / obstacle.maxHealth),
+              5
+            );
+          }
+          
+          // 绘制敌人飞机
+          if (obstacle.canShoot) {
+            // 飞机主体
+            ctx.fillStyle = obstacle.isBoss ? '#8B0000' : '#333';
+            ctx.beginPath();
+            ctx.moveTo(-obstacle.width/2, 0);
+            ctx.lineTo(obstacle.width/2, -obstacle.height/3);
+            ctx.lineTo(obstacle.width/2, obstacle.height/3);
+            ctx.closePath();
+            ctx.fill();
             
-            // 绘制敌人飞机
-            if (obstacle.canShoot) {
-                // 飞机主体
-                ctx.fillStyle = obstacle.isBoss ? '#8B0000' : '#333';
-                ctx.beginPath();
-                ctx.moveTo(-obstacle.width/2, 0);
-                ctx.lineTo(obstacle.width/2, -obstacle.height/3);
-                ctx.lineTo(obstacle.width/2, obstacle.height/3);
-                ctx.closePath();
-                ctx.fill();
-                
-                // 机翼
-                ctx.fillStyle = obstacle.isBoss ? '#600000' : '#222';
-                ctx.beginPath();
-                ctx.moveTo(-obstacle.width/4, 0);
-                ctx.lineTo(obstacle.width/4, -obstacle.height/2);
-                ctx.lineTo(obstacle.width/2, -obstacle.height/3);
-                ctx.lineTo(obstacle.width/4, 0);
-                ctx.closePath();
-                ctx.fill();
-                
-                ctx.beginPath();
-                ctx.moveTo(-obstacle.width/4, 0);
-                ctx.lineTo(obstacle.width/4, obstacle.height/2);
-                ctx.lineTo(obstacle.width/2, obstacle.height/3);
-                ctx.lineTo(obstacle.width/4, 0);
-                ctx.closePath();
-                ctx.fill();
-                
-                // 尾翼
-                ctx.beginPath();
-                ctx.moveTo(-obstacle.width/2, 0);
-                ctx.lineTo(-obstacle.width/3, -obstacle.height/4);
-                ctx.lineTo(-obstacle.width/4, -obstacle.height/4);
-                ctx.lineTo(-obstacle.width/3, 0);
-                ctx.closePath();
-                ctx.fill();
-                
-                ctx.beginPath();
-                ctx.moveTo(-obstacle.width/2, 0);
-                ctx.lineTo(-obstacle.width/3, obstacle.height/4);
-                ctx.lineTo(-obstacle.width/4, obstacle.height/4);
-                ctx.lineTo(-obstacle.width/3, 0);
-                ctx.closePath();
-                ctx.fill();
-                
-                // 驾驶舱
-                ctx.fillStyle = '#3498db';
-                ctx.beginPath();
-                ctx.arc(obstacle.width/4, 0, obstacle.width/8, 0, Math.PI * 2);
-                ctx.fill();
-                
-                // 如果是Boss，添加特殊标记
-                if (obstacle.isBoss) {
-                    ctx.fillStyle = 'gold';
-                    ctx.font = 'bold 20px Arial';
-ctx.textAlign = 'center';
-ctx.textBaseline = 'middle';
-ctx.fillText('BOSS', 0, 0);
-}
-} else {
-// 绘制普通矩形障碍物
-ctx.fillStyle = obstacle.isBoss ? '#8B0000' : (obstacle.isLarge ? '#333' : '#555');
-ctx.fillRect(
--obstacle.width / 2,
--obstacle.height / 2,
-obstacle.width,
-obstacle.height
-);
-              // 添加一些细节
-                ctx.fillStyle = obstacle.isBoss ? '#600000' : (obstacle.isLarge ? '#222' : '#444');
-                ctx.fillRect(
-                    -obstacle.width / 2 + 5,
-                    -obstacle.height / 2 + 5,
-                    obstacle.width - 10,
-                    obstacle.height - 10
-                );
-                
-                // 添加裂缝效果 (对于受损的大型障碍物)
-                if ((obstacle.isLarge || obstacle.isBoss) && obstacle.health < obstacle.maxHealth) {
-                    ctx.strokeStyle = 'rgba(0, 0, 0, 0.5)';
-                    ctx.lineWidth = 2;
-                    for (let i = 0; i < (obstacle.isBoss ? 10 : 3); i++) {
-                        ctx.beginPath();
-                        ctx.moveTo(
-                            -obstacle.width / 2 + Math.random() * obstacle.width,
-                            -obstacle.height / 2 + Math.random() * obstacle.height / 3
-                        );
-                        ctx.lineTo(
-                            -obstacle.width / 2 + Math.random() * obstacle.width,
-                            obstacle.height / 2 - Math.random() * obstacle.height / 3
-                        );
-                        ctx.stroke();
-                    }
-                }
-                
-                // 如果是Boss，添加特殊标记
-                if (obstacle.isBoss) {
-                    ctx.fillStyle = 'gold';
-                    ctx.font = 'bold 20px Arial';
-                    ctx.textAlign = 'center';
-                    ctx.textBaseline = 'middle';
-                    ctx.fillText('BOSS', 0, 0);
-                }
-            }
-        } else {
-            // 圆形障碍物
+            // 机翼
+            ctx.fillStyle = obstacle.isBoss ? '#600000' : '#222';
             ctx.beginPath();
-            ctx.arc(0, 0, obstacle.width / 2, 0, Math.PI * 2);
-            ctx.fillStyle = '#555';
+            ctx.moveTo(-obstacle.width/4, 0);
+            ctx.lineTo(obstacle.width/4, -obstacle.height/2);
+            ctx.lineTo(obstacle.width/2, -obstacle.height/3);
+            ctx.lineTo(obstacle.width/4, 0);
+            ctx.closePath();
+            ctx.fill();
+            
+            ctx.beginPath();
+            ctx.moveTo(-obstacle.width/4, 0);
+            ctx.lineTo(obstacle.width/4, obstacle.height/2);
+            ctx.lineTo(obstacle.width/2, obstacle.height/3);
+            ctx.lineTo(obstacle.width/4, 0);
+            ctx.closePath();
+            ctx.fill();
+            
+            // 尾翼
+            ctx.beginPath();
+            ctx.moveTo(-obstacle.width/2, 0);
+            ctx.lineTo(-obstacle.width/3, -obstacle.height/4);
+            ctx.lineTo(-obstacle.width/4, -obstacle.height/4);
+            ctx.lineTo(-obstacle.width/3, 0);
+            ctx.closePath();
             ctx.fill();
             
-            // 添加一些细节
             ctx.beginPath();
-            ctx.arc(0, 0, obstacle.width / 2 - 5, 0, Math.PI * 2);
-            ctx.fillStyle = '#444';
+            ctx.moveTo(-obstacle.width/2, 0);
+            ctx.lineTo(-obstacle.width/3, obstacle.height/4);
+            ctx.lineTo(-obstacle.width/4, obstacle.height/4);
+            ctx.lineTo(-obstacle.width/3, 0);
+            ctx.closePath();
             ctx.fill();
             
+            // 驾驶舱
+            ctx.fillStyle = '#3498db';
+            ctx.beginPath();
+            ctx.arc(obstacle.width/4, 0, obstacle.width/8, 0, Math.PI * 2);
+            ctx.fill();
+            
+            // 如果是Boss，添加特殊标记
+            if (obstacle.isBoss) {
+              ctx.fillStyle = 'gold';
+              ctx.font = 'bold 20px Arial';
+              ctx.textAlign = 'center';
+              ctx.textBaseline = 'middle';
+              ctx.fillText('BOSS', 0, 0);
+            }
+          } else {
+            // 绘制普通矩形障碍物
+            ctx.fillStyle = obstacle.isBoss ? '#8B0000' : (obstacle.isLarge ? '#333' : '#555');
+            ctx.fillRect(
+              -obstacle.width / 2,
+              -obstacle.height / 2,
+              obstacle.width,
+              obstacle.height
+            );
+            // 添加一些细节
+            ctx.fillStyle = obstacle.isBoss ? '#600000' : (obstacle.isLarge ? '#222' : '#444');
+            ctx.fillRect(
+              -obstacle.width / 2 + 5,
+              -obstacle.height / 2 + 5,
+              obstacle.width - 10,
+              obstacle.height - 10
+            );
+            
             // 添加裂缝效果 (对于受损的大型障碍物)
-            if (obstacle.isLarge && obstacle.health < obstacle.maxHealth) {
-                ctx.strokeStyle = 'rgba(0, 0, 0, 0.5)';
-                ctx.lineWidth = 2;
-                for (let i = 0; i < 3; i++) {
-                    ctx.beginPath();
-                    ctx.moveTo(
-                        Math.cos(i * 2) * obstacle.width / 4,
-                        Math.sin(i * 2) * obstacle.width / 4
-                    );
-                    ctx.lineTo(
-                        Math.cos(i * 2 + 1) * obstacle.width / 3,
-                        Math.sin(i * 2 + 1) * obstacle.width / 3
-                    );
-                    ctx.stroke();
-                }
+            if ((obstacle.isLarge || obstacle.isBoss) && obstacle.health < obstacle.maxHealth) {
+              ctx.strokeStyle = 'rgba(0, 0, 0, 0.5)';
+              ctx.lineWidth = 2;
+              for (let i = 0; i < (obstacle.isBoss ? 10 : 3); i++) {
+                ctx.beginPath();
+                ctx.moveTo(
+                  -obstacle.width / 2 + Math.random() * obstacle.width,
+                  -obstacle.height / 2 + Math.random() * obstacle.height / 3
+                );
+                ctx.lineTo(
+                  -obstacle.width / 2 + Math.random() * obstacle.width,
+                  obstacle.height / 2 - Math.random() * obstacle.height / 3
+                );
+                ctx.stroke();
+              }
+            }
+            
+            // 如果是Boss，添加特殊标记
+            if (obstacle.isBoss) {
+              ctx.fillStyle = 'gold';
+              ctx.font = 'bold 20px Arial';
+              ctx.textAlign = 'center';
+              ctx.textBaseline = 'middle';
+              ctx.fillText('BOSS', 0, 0);
             }
+          }
+        } else {
+          // 圆形障碍物
+          ctx.beginPath();
+          ctx.arc(0, 0, obstacle.width / 2, 0, Math.PI * 2);
+          ctx.fillStyle = '#555';
+          ctx.fill();
+          
+          // 添加一些细节
+          ctx.beginPath();
+          ctx.arc(0, 0, obstacle.width / 2 - 5, 0, Math.PI * 2);
+          ctx.fillStyle = '#444';
+          ctx.fill();
+          
+          // 添加裂缝效果 (对于受损的大型障碍物)
+          if (obstacle.isLarge && obstacle.health < obstacle.maxHealth) {
+            ctx.strokeStyle = 'rgba(0, 0, 0, 0.5)';
+            ctx.lineWidth = 2;
+            for (let i = 0; i < 3; i++) {
+              ctx.beginPath();
+              ctx.moveTo(
+                Math.cos(i * 2) * obstacle.width / 4,
+                Math.sin(i * 2) * obstacle.width / 4
+              );
+              ctx.lineTo(
+                Math.cos(i * 2 + 1) * obstacle.width / 3,
+                Math.sin(i * 2 + 1) * obstacle.width / 3
+              );
+              ctx.stroke();
+            }
+          }
         }
         
         ctx.restore();
-    });
-    
-    // 绘制飞机
-    ctx.save();
-    ctx.translate(gameState.plane.x, gameState.plane.y);
-    ctx.rotate(gameState.plane.rotation * Math.PI / 180);
-    
-    // 绘制保护罩
-    if (gameState.plane.hasShield && gameState.plane.shieldDuration > Date.now()) {
+      });
+      
+      // 绘制飞机
+      ctx.save();
+      ctx.translate(gameState.plane.x, gameState.plane.y);
+      ctx.rotate(gameState.plane.rotation * Math.PI / 180);
+      
+      // 绘制保护罩
+      if (gameState.plane.hasShield && gameState.plane.shieldDuration > Date.now()) {
         ctx.beginPath();
         ctx.arc(0, 0, 45, 0, Math.PI * 2);
         ctx.strokeStyle = `rgba(0, 204, 255, ${0.3 + Math.sin(Date.now() / 200) * 0.3})`;
@@ -1896,72 +1901,72 @@ obstacle.height
         gradient.addColorStop(1, 'rgba(0, 204, 255, 0)');
         ctx.fillStyle = gradient;
         ctx.fill();
-    }
-    
-    // 飞机主体
-    ctx.beginPath();
-    ctx.moveTo(30, 0);
-    ctx.lineTo(-20, -15);
-    ctx.lineTo(-25, 0);
-    ctx.lineTo(-20, 15);
-    ctx.closePath();
-    ctx.fillStyle = '#e74c3c';
-    ctx.fill();
-    
-    // 飞机窗户
-    ctx.beginPath();
-    ctx.arc(10, 0, 5, 0, Math.PI * 2);
-    ctx.fillStyle = '#3498db';
-    ctx.fill();
-    
-    // 飞机机翼
-    ctx.beginPath();
-    ctx.moveTo(5, 0);
-    ctx.lineTo(-5, -20);
-    ctx.lineTo(-15, -20);
-    ctx.lineTo(-5, 0);
-    ctx.closePath();
-    ctx.fillStyle = '#c0392b';
-    ctx.fill();
-    
-    ctx.beginPath();
-    ctx.moveTo(5, 0);
-    ctx.lineTo(-5, 20);
-    ctx.lineTo(-15, 20);
-    ctx.lineTo(-5, 0);
-    ctx.closePath();
-    ctx.fillStyle = '#c0392b';
-    ctx.fill();
-    
-    // 飞机尾翼
-    ctx.beginPath();
-    ctx.moveTo(-20, 0);
-    ctx.lineTo(-25, -10);
-    ctx.lineTo(-30, -10);
-    ctx.lineTo(-25, 0);
-    ctx.closePath();
-    ctx.fillStyle = '#a5281b';
-    ctx.fill();
-    
-    ctx.beginPath();
-    ctx.moveTo(-20, 0);
-    ctx.lineTo(-25, 10);
-    ctx.lineTo(-30, 10);
-    ctx.lineTo(-25, 0);
-    ctx.closePath();
-    ctx.fillStyle = '#a5281b';
-    ctx.fill();
-    
-    ctx.restore();
-    
-    // 绘制爆炸效果
-    gameState.explosions.forEach(explosion => {
+      }
+      
+      // 飞机主体
+      ctx.beginPath();
+      ctx.moveTo(30, 0);
+      ctx.lineTo(-20, -15);
+      ctx.lineTo(-25, 0);
+      ctx.lineTo(-20, 15);
+      ctx.closePath();
+      ctx.fillStyle = '#e74c3c';
+      ctx.fill();
+      
+      // 飞机窗户
+      ctx.beginPath();
+      ctx.arc(10, 0, 5, 0, Math.PI * 2);
+      ctx.fillStyle = '#3498db';
+      ctx.fill();
+      
+      // 飞机机翼
+      ctx.beginPath();
+      ctx.moveTo(5, 0);
+      ctx.lineTo(-5, -20);
+      ctx.lineTo(-15, -20);
+      ctx.lineTo(-5, 0);
+      ctx.closePath();
+      ctx.fillStyle = '#c0392b';
+      ctx.fill();
+      
+      ctx.beginPath();
+      ctx.moveTo(5, 0);
+      ctx.lineTo(-5, 20);
+      ctx.lineTo(-15, 20);
+      ctx.lineTo(-5, 0);
+      ctx.closePath();
+      ctx.fillStyle = '#c0392b';
+      ctx.fill();
+      
+      // 飞机尾翼
+      ctx.beginPath();
+      ctx.moveTo(-20, 0);
+      ctx.lineTo(-25, -10);
+      ctx.lineTo(-30, -10);
+      ctx.lineTo(-25, 0);
+      ctx.closePath();
+      ctx.fillStyle = '#a5281b';
+      ctx.fill();
+      
+      ctx.beginPath();
+      ctx.moveTo(-20, 0);
+      ctx.lineTo(-25, 10);
+      ctx.lineTo(-30, 10);
+      ctx.lineTo(-25, 0);
+      ctx.closePath();
+      ctx.fillStyle = '#a5281b';
+      ctx.fill();
+      
+      ctx.restore();
+      
+      // 绘制爆炸效果
+      gameState.explosions.forEach(explosion => {
         ctx.save();
         ctx.translate(explosion.x, explosion.y);
         
         const gradient = ctx.createRadialGradient(
-            0, 0, 0,
-            0, 0, explosion.size
+          0, 0, 0,
+          0, 0, explosion.size
         );
         gradient.addColorStop(0, `rgba(255, 100, 0, ${explosion.alpha})`);
         gradient.addColorStop(0.5, `rgba(255, 200, 0, ${explosion.alpha * 0.6})`);
@@ -1973,10 +1978,10 @@ obstacle.height
         ctx.fill();
         
         ctx.restore();
-    });
-    
-    // 绘制特效文字
-    gameState.effects.forEach(effect => {
+      });
+      
+      // 绘制特效文字
+      gameState.effects.forEach(effect => {
         const timePassed = Date.now() - effect.startTime;
         const progress = timePassed / effect.duration;
         
@@ -1991,46 +1996,46 @@ obstacle.height
         ctx.fillText(effect.text, 0, 0);
         
         ctx.restore();
-    });
-    
-    // 绘制速度线
-    if (gameState.speed > 120) {
+      });
+      
+      // 绘制速度线
+      if (gameState.speed > 120) {
         for (let i = 0; i < 10; i++) {
-            const x = Math.random() * canvas.width;
-            const y = Math.random() * canvas.height;
-            const length = Math.random() * 20 + 10;
-            const angle = Math.atan2(
-                gameState.plane.y - y,
-                gameState.plane.x - x
-            );
-            
-            ctx.save();
-            ctx.translate(x, y);
-            ctx.rotate(angle);
-            
-            ctx.beginPath();
-            ctx.moveTo(0, 0);
-            ctx.lineTo(length, 0);
-            ctx.strokeStyle = `rgba(255, 255, 255, ${Math.random() * 0.5 + 0.3})`;
-            ctx.lineWidth = 1;
-            ctx.stroke();
-            
-            ctx.restore();
+          const x = Math.random() * canvas.width;
+          const y = Math.random() * canvas.height;
+          const length = Math.random() * 20 + 10;
+          const angle = Math.atan2(
+            gameState.plane.y - y,
+            gameState.plane.x - x
+          );
+          
+          ctx.save();
+          ctx.translate(x, y);
+          ctx.rotate(angle);
+          
+          ctx.beginPath();
+          ctx.moveTo(0, 0);
+          ctx.lineTo(length, 0);
+          ctx.strokeStyle = `rgba(255, 255, 255, ${Math.random() * 0.5 + 0.3})`;
+          ctx.lineWidth = 1;
+          ctx.stroke();
+          
+          ctx.restore();
         }
-    }
-    
-    // 绘制难度提示
-    if (gameState.difficulty > 1.5) {
+      }
+      
+      // 绘制难度提示
+      if (gameState.difficulty > 1.5) {
         ctx.fillStyle = 'rgba(255, 0, 0, 0.5)';
         ctx.font = '20px Arial';
         ctx.textAlign = 'right';
         ctx.fillText(`难度: ${gameState.difficulty.toFixed(1)}x`, canvas.width - 20, 30);
+      }
     }
-}
 
-// 辅助函数: 获取FontAwesome图标的Unicode
-function getIconCode(iconClass) {
-    const icons = {
+    // 辅助函数: 获取FontAwesome图标的Unicode
+    function getIconCode(iconClass) {
+      const icons = {
         'fas fa-bolt': 'f0e7',
         'fas fa-rocket': 'f135',
         'fas fa-shield-alt': 'f3ed',
@@ -2038,22 +2043,22 @@ function getIconCode(iconClass) {
         'fas fa-clock': 'f017',
         'fas fa-bomb': 'f1e2',
         'fas fa-star': 'f005'
-    };
-    return icons[iconClass] || 'f128';  // 默认返回问号图标
-}
+      };
+      return icons[iconClass] || 'f128';  // 默认返回问号图标
+    }
 
-// 虚拟摇杆控制
-function setupJoystick() {
-    const joystickArea = joystick;
-    const handle = joystickHandle;
-    let active = false;
-    let startX = 0;
-    let startY = 0;
-    let handleX = 0;
-    let handleY = 0;
-    const maxDistance = 40;
-    
-    joystickArea.addEventListener('touchstart', (e) => {
+    // 虚拟摇杆控制
+    function setupJoystick() {
+      const joystickArea = joystick;
+      const handle = joystickHandle;
+      let active = false;
+      let startX = 0;
+      let startY = 0;
+      let handleX = 0;
+      let handleY = 0;
+      const maxDistance = 40;
+      
+      joystickArea.addEventListener('touchstart', (e) => {
         e.preventDefault();
         const touch = e.touches[0];
         const rect = joystickArea.getBoundingClientRect();
@@ -2065,8 +2070,8 @@ function setupJoystick() {
         // 限制摇杆移动范围
         const distance = Math.sqrt(handleX * handleX + handleY * handleY);
         if (distance > maxDistance) {
-            handleX = (handleX / distance) * maxDistance;
-            handleY = (handleY / distance) * maxDistance;
+          handleX = (handleX / distance) * maxDistance;
+          handleY = (handleY / distance) * maxDistance;
         }
         
         handle.style.transform = `translate(${handleX}px, ${handleY}px)`;
@@ -2076,9 +2081,9 @@ function setupJoystick() {
         gameState.joystickDistance = distance / maxDistance;
         gameState.joystickActive = true;
         active = true;
-    });
-    
-    joystickArea.addEventListener('touchmove', (e) => {
+      });
+      
+      joystickArea.addEventListener('touchmove', (e) => {
         if (!active) return;
         e.preventDefault();
         const touch = e.touches[0];
@@ -2088,8 +2093,8 @@ function setupJoystick() {
         // 限制摇杆移动范围
         const distance = Math.sqrt(handleX * handleX + handleY * handleY);
         if (distance > maxDistance) {
-            handleX = (handleX / distance) * maxDistance;
-            handleY = (handleY / distance) * maxDistance;
+          handleX = (handleX / distance) * maxDistance;
+          handleY = (handleY / distance) * maxDistance;
         }
         
         handle.style.transform = `translate(${handleX}px, ${handleY}px)`;
@@ -2097,166 +2102,171 @@ function setupJoystick() {
         // 计算角度和距离
         gameState.joystickAngle = Math.atan2(handleY, handleX);
         gameState.joystickDistance = distance / maxDistance;
-    });
-    
-    joystickArea.addEventListener('touchend', (e) => {
+      });
+      
+      joystickArea.addEventListener('touchend', (e) => {
         e.preventDefault();
         handle.style.transform = 'translate(0, 0)';
         gameState.joystickActive = false;
         active = false;
-    });
-}
+      });
+    }
 
-// 事件监听
-window.addEventListener('resize', resizeCanvas);
+    // 事件监听
+    window.addEventListener('resize', resizeCanvas);
 
-// 键盘控制
-document.addEventListener('keydown', (e) => {
-    if (gameState.keys.hasOwnProperty(e.key)) {
+    // 键盘控制
+    document.addEventListener('keydown', (e) => {
+      if (gameState.keys.hasOwnProperty(e.key)) {
         gameState.keys[e.key] = true;
         e.preventDefault();
-    }
-    
-    if (e.key === ' ' || e.key === 'Spacebar') {  // 空格键射击
+      }
+      
+      if (e.key === ' ' || e.key === 'Spacebar') {  // 空格键射击
         gameState.keys.Space = true;
         e.preventDefault();
-    }
-});
+      }
+    });
 
-document.addEventListener('keyup', (e) => {
-    if (gameState.keys.hasOwnProperty(e.key)) {
+    document.addEventListener('keyup', (e) => {
+      if (gameState.keys.hasOwnProperty(e.key)) {
         gameState.keys[e.key] = false;
         e.preventDefault();
-    }
-    
-    if (e.key === ' ' || e.key === 'Spacebar') {
+      }
+      
+      if (e.key === ' ' || e.key === 'Spacebar') {
         gameState.keys.Space = false;
         e.preventDefault();
-    }
-});
-
-// 触摸控制按钮事件
-leftBtn.addEventListener('touchstart', (e) => {
-    e.preventDefault();
-    gameState.keys.ArrowLeft = true;
-});
-leftBtn.addEventListener('touchend', (e) => {
-    e.preventDefault();
-    gameState.keys.ArrowLeft = false;
-});
+      }
+    });
 
-rightBtn.addEventListener('touchstart', (e) => {
-    e.preventDefault();
-    gameState.keys.ArrowRight = true;
-});
-rightBtn.addEventListener('touchend', (e) => {
-    e.preventDefault();
-    gameState.keys.ArrowRight = false;
-});
+    // 触摸控制按钮事件
+    leftBtn.addEventListener('touchstart', (e) => {
+      e.preventDefault();
+      gameState.keys.ArrowLeft = true;
+    });
+    leftBtn.addEventListener('touchend', (e) => {
+      e.preventDefault();
+      gameState.keys.ArrowLeft = false;
+    });
 
-upBtn.addEventListener('touchstart', (e) => {
-    e.preventDefault();
-    gameState.keys.ArrowUp = true;
-});
-upBtn.addEventListener('touchend', (e) => {
-    e.preventDefault();
-    gameState.keys.ArrowUp = false;
-});
+    rightBtn.addEventListener('touchstart', (e) => {
+      e.preventDefault();
+      gameState.keys.ArrowRight = true;
+    });
+    rightBtn.addEventListener('touchend', (e) => {
+      e.preventDefault();
+      gameState.keys.ArrowRight = false;
+    });
 
-downBtn.addEventListener('touchstart', (e) => {
-    e.preventDefault();
-    gameState.keys.ArrowDown = true;
-});
-downBtn.addEventListener('touchend', (e) => {
-    e.preventDefault();
-    gameState.keys.ArrowDown = false;
-});
+    upBtn.addEventListener('touchstart', (e) => {
+      e.preventDefault();
+      gameState.keys.ArrowUp = true;
+    });
+    upBtn.addEventListener('touchend', (e) => {
+      e.preventDefault();
+      gameState.keys.ArrowUp = false;
+    });
 
-fireBtn.addEventListener('touchstart', (e) => {
-    e.preventDefault();
-    gameState.isFiring = true;
-});
-fireBtn.addEventListener('touchend', (e) => {
-    e.preventDefault();
-    gameState.isFiring = false;
-});
+    downBtn.addEventListener('touchstart', (e) => {
+      e.preventDefault();
+      gameState.keys.ArrowDown = true;
+    });
+    downBtn.addEventListener('touchend', (e) => {
+      e.preventDefault();
+      gameState.keys.ArrowDown = false;
+    });
 
-// 鼠标控制按钮事件（用于桌面浏览器测试）
-leftBtn.addEventListener('mousedown', (e) => {
-    e.preventDefault();
-    gameState.keys.ArrowLeft = true;
-});
-leftBtn.addEventListener('mouseup', (e) => {
-    e.preventDefault();
-    gameState.keys.ArrowLeft = false;
-});
-leftBtn.addEventListener('mouseleave', (e) => {
-    e.preventDefault();
-    gameState.keys.ArrowLeft = false;
-});
+    fireBtn.addEventListener('touchstart', (e) => {
+      e.preventDefault();
+      gameState.isFiring = true;
+    });
+    fireBtn.addEventListener('touchend', (e) => {
+      e.preventDefault();
+      gameState.isFiring = false;
+    });
 
-rightBtn.addEventListener('mousedown', (e) => {
-    e.preventDefault();
-    gameState.keys.ArrowRight = true;
-});
-rightBtn.addEventListener('mouseup', (e) => {
-    e.preventDefault();
-    gameState.keys.ArrowRight = false;
-});
-rightBtn.addEventListener('mouseleave', (e) => {
-    e.preventDefault();
-    gameState.keys.ArrowRight = false;
-});
+    // 鼠标控制按钮事件（用于桌面浏览器测试）
+    leftBtn.addEventListener('mousedown', (e) => {
+      e.preventDefault();
+      gameState.keys.ArrowLeft = true;
+    });
+    leftBtn.addEventListener('mouseup', (e) => {
+      e.preventDefault();
+      gameState.keys.ArrowLeft = false;
+    });
+    leftBtn.addEventListener('mouseleave', (e) => {
+      e.preventDefault();
+      gameState.keys.ArrowLeft = false;
+    });
 
-upBtn.addEventListener('mousedown', (e) => {
-    e.preventDefault();
-    gameState.keys.ArrowUp = true;
-});
-upBtn.addEventListener('mouseup', (e) => {
-    e.preventDefault();
-    gameState.keys.ArrowUp = false;
-});
-upBtn.addEventListener('mouseleave', (e) => {
-    e.preventDefault();
-    gameState.keys.ArrowUp = false;
-});
+    rightBtn.addEventListener('mousedown', (e) => {
+      e.preventDefault();
+      gameState.keys.ArrowRight = true;
+    });
+    rightBtn.addEventListener('mouseup', (e) => {
+      e.preventDefault();
+      gameState.keys.ArrowRight = false;
+    });
+    rightBtn.addEventListener('mouseleave', (e) => {
+      e.preventDefault();
+      gameState.keys.ArrowRight = false;
+    });
 
-downBtn.addEventListener('mousedown', (e) => {
-    e.preventDefault();
-    gameState.keys.ArrowDown = true;
-});
-downBtn.addEventListener('mouseup', (e) => {
-    e.preventDefault();
-    gameState.keys.ArrowDown = false;
-});
-downBtn.addEventListener('mouseleave', (e) => {
-    e.preventDefault();
-    gameState.keys.ArrowDown = false;
-});
+    upBtn.addEventListener('mousedown', (e) => {
+      e.preventDefault();
+      gameState.keys.ArrowUp = true;
+    });
+    upBtn.addEventListener('mouseup', (e) => {
+      e.preventDefault();
+      gameState.keys.ArrowUp = false;
+    });
+    upBtn.addEventListener('mouseleave', (e) => {
+      e.preventDefault();
+      gameState.keys.ArrowUp = false;
+    });
 
-fireBtn.addEventListener('mousedown', (e) => {
-    e.preventDefault();
-    gameState.isFiring = true;
-});
-fireBtn.addEventListener('mouseup', (e) => {
-    e.preventDefault();
-    gameState.isFiring = false;
-});
-fireBtn.addEventListener('mouseleave', (e) => {
-    e.preventDefault();
-    gameState.isFiring = false;
-});
+    downBtn.addEventListener('mousedown', (e) => {
+      e.preventDefault();
+      gameState.keys.ArrowDown = true;
+    });
+    downBtn.addEventListener('mouseup', (e) => {
+      e.preventDefault();
+      gameState.keys.ArrowDown = false;
+    });
+    downBtn.addEventListener('mouseleave', (e) => {
+      e.preventDefault();
+      gameState.keys.ArrowDown = false;
+    });
 
-// 按钮事件
-startButton.addEventListener('click', initGame);
-restartButton.addEventListener('click', initGame);
+    fireBtn.addEventListener('mousedown', (e) => {
+      e.preventDefault();
+      gameState.isFiring = true;
+    });
+    fireBtn.addEventListener('mouseup', (e) => {
+      e.preventDefault();
+      gameState.isFiring = false;
+    });
+    fireBtn.addEventListener('mouseleave', (e) => {
+      e.preventDefault();
+      gameState.isFiring = false;
+    });
 
-// 初始调整画布大小
-resizeCanvas();
-setupJoystick();
+    // 按钮事件
+    startButton.addEventListener('click', initGame);
+    restartButton.addEventListener('click', initGame);
 
-// 显示最高分
-highScoreDisplay.textContent = gameState.highScore;
-      </script> <p style="border-radius: 8px; text-align: center; font-size: 12px; color: #fff; margin-top: 16px;position: fixed; left: 8px; bottom: 8px; z-index: 10; background: rgba(0, 0, 0, 0.8); padding: 4px 8px;">Made with <img src="https://enzostvs-deepsite.hf.space/logo.svg" alt="DeepSite Logo" style="width: 16px; height: 16px; vertical-align: middle;display:inline-block;margin-right:3px;filter:brightness(0) invert(1);"><a href="https://enzostvs-deepsite.hf.space" style="color: #fff;text-decoration: underline;" target="_blank" >DeepSite</a> - <a href="https://enzostvs-deepsite.hf.space?remix=zdwalter/plane-fighter-2" style="color: #fff;text-decoration: underline;" target="_blank" >🧬 Remix</a></p></body> </html>
+    // 初始调整画布大小
+    resizeCanvas();
+    setupJoystick();
 
-      
\ No newline at end of file
+    // 显示最高分
+    highScoreDisplay.textContent = gameState.highScore;
+  </script>
+  <p style="border-radius: 8px; text-align: center; font-size: 12px; color: #fff; margin-top: 16px;position: fixed; left: 8px; bottom: 8px; z-index: 10; background: rgba(0, 0, 0, 0.8); padding: 4px 8px;">
+    Made with <img src="https://enzostvs-deepsite.hf.space/logo.svg" alt="DeepSite Logo" style="width: 16px; height: 16px; vertical-align: middle;display:inline-block;margin-right:3px;filter:brightness(0) invert(1);">
+    <a href="https://enzostvs-deepsite.hf.space" style="color: #fff;text-decoration: underline;" target="_blank" >DeepSite</a> - 
+    <a href="https://enzostvs-deepsite.hf.space?remix=zdwalter/plane-fighter-2" style="color: #fff;text-decoration: underline;" target="_blank" >🧬 Remix</a>
+  </p>
+</body>
+</html>
