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1030 lines (892 loc) · 38.1 KB
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<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>坦克大战</title>
<style>
body {
margin: 0;
padding: 0;
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
background-color: #000;
overflow: hidden;
font-family: Arial, sans-serif;
}
#gameContainer {
position: relative;
}
#gameCanvas {
border: 2px solid #333;
background-color: #000;
}
#gameStatus {
position: absolute;
color: white;
font-size: 24px;
text-align: center;
width: 100%;
top: 40%;
display: none;
white-space: pre-line;
}
#gameInfo {
position: absolute;
top: 10px;
left: 10px;
color: white;
font-size: 16px;
}
#gameControls {
position: absolute;
bottom: 10px;
color: white;
font-size: 14px;
text-align: center;
width: 100%;
}
</style>
</head>
<body>
<div id="gameContainer">
<canvas id="gameCanvas" width="600" height="600"></canvas>
<div id="gameInfo">敌人: 10</div>
<div id="gameStatus"></div>
<div id="gameControls">方向键移动，空格键射击</div>
</div>
<script>
// 游戏常量
const GRID_SIZE = 30; // 网格大小
const CANVAS_SIZE = 600; // 画布大小
const GRID_COUNT = CANVAS_SIZE / GRID_SIZE; // 网格数量
const TANK_SPEED = 2; // 坦克速度
const BULLET_SPEED = 5; // 子弹速度
const ENEMY_COUNT_MAX = 10; // 最大敌人数量
// 游戏状态
const GAME_STATE = {
READY: 0,
PLAYING: 1,
GAME_OVER: 2,
WIN: 3
};
// 方向
const DIRECTION = {
UP: 0,
RIGHT: 1,
DOWN: 2,
LEFT: 3
};
// 对象类型
const OBJECT_TYPE = {
PLAYER: 0,
ENEMY: 1,
BRICK: 2,
STEEL: 3,
BASE: 4,
BULLET: 5,
EXPLOSION: 6
};
// 游戏类
class Game {
constructor() {
this.canvas = document.getElementById('gameCanvas');
this.ctx = this.canvas.getContext('2d');
this.gameStatus = document.getElementById('gameStatus');
this.gameInfo = document.getElementById('gameInfo');
this.state = GAME_STATE.READY;
this.player = null;
this.enemies = [];
this.bullets = [];
this.walls = [];
this.explosions = [];
this.base = null;
this.lastTime = 0;
this.enemyCount = ENEMY_COUNT_MAX;
this.activeEnemies = 0;
this.enemiesDestroyed = 0;
this.setupGame();
this.setupEventListeners();
}
setupGame() {
// 创建玩家
this.player = new Tank(
CANVAS_SIZE / 2 - GRID_SIZE / 2,
CANVAS_SIZE - GRID_SIZE * 2,
DIRECTION.UP,
OBJECT_TYPE.PLAYER,
this
);
// 创建基地
this.base = new Base(
CANVAS_SIZE / 2 - GRID_SIZE / 2,
CANVAS_SIZE - GRID_SIZE,
this
);
// 清除数组
this.enemies = [];
this.bullets = [];
this.walls = [];
this.explosions = [];
this.activeEnemies = 0;
this.enemiesDestroyed = 0;
// 创建地图
this.createMap();
// 更新游戏信息
this.updateGameInfo();
// 设置游戏状态
this.changeState(GAME_STATE.READY);
}
createMap() {
// 创建随机地图
this.walls = [];
// 先创建基地周围的墙
const baseX = Math.floor(this.base.x / GRID_SIZE);
const baseY = Math.floor(this.base.y / GRID_SIZE);
// 基地左侧墙
this.walls.push(new Wall(
(baseX - 1) * GRID_SIZE,
baseY * GRID_SIZE,
OBJECT_TYPE.BRICK,
this
));
// 基地右侧墙
this.walls.push(new Wall(
(baseX + 1) * GRID_SIZE,
baseY * GRID_SIZE,
OBJECT_TYPE.BRICK,
this
));
// 基地上方墙
this.walls.push(new Wall(
baseX * GRID_SIZE,
(baseY - 1) * GRID_SIZE,
OBJECT_TYPE.BRICK,
this
));
// 随机生成其他墙体
for (let i = 0; i < GRID_COUNT; i++) {
for (let j = 0; j < GRID_COUNT; j++) {
// 避开玩家初始位置和基地位置
const isPlayerArea = (
j >= GRID_COUNT - 3 &&
i >= Math.floor(GRID_COUNT / 2) - 2 &&
i <= Math.floor(GRID_COUNT / 2) + 1
);
const isBaseArea = (
j === baseY && i === baseX ||
j === baseY && i === baseX - 1 ||
j === baseY && i === baseX + 1 ||
j === baseY - 1 && i === baseX
);
// 避开敌人生成区域 (顶部两行)
const isEnemySpawnArea = j < 2;
if (!isPlayerArea && !isBaseArea && !isEnemySpawnArea && Math.random() < 0.2) {
// 20% 的概率生成砖墙
this.walls.push(new Wall(
i * GRID_SIZE,
j * GRID_SIZE,
OBJECT_TYPE.BRICK,
this
));
} else if (!isPlayerArea && !isBaseArea && !isEnemySpawnArea && Math.random() < 0.08) {
// 8% 的概率生成钢板
this.walls.push(new Wall(
i * GRID_SIZE,
j * GRID_SIZE,
OBJECT_TYPE.STEEL,
this
));
}
}
}
// 确保地图有通路
this.ensureMapPaths();
// 创建敌人
this.spawnEnemies();
}
ensureMapPaths() {
// 确保玩家到敌人区域有通路
const baseX = Math.floor(this.base.x / GRID_SIZE);
const baseY = Math.floor(this.base.y / GRID_SIZE);
// 清除玩家上方的通路
const pathX1 = Math.floor(GRID_COUNT / 2) - 1;
const pathX2 = Math.floor(GRID_COUNT / 2) + 1;
for (let j = baseY - 2; j > 0; j--) {
// 创建几条可能的通路
if (Math.random() < 0.5) {
// 左侧通路
this.walls = this.walls.filter(wall =>
!(Math.floor(wall.x / GRID_SIZE) === pathX1 &&
Math.floor(wall.y / GRID_SIZE) === j)
);
} else {
// 右侧通路
this.walls = this.walls.filter(wall =>
!(Math.floor(wall.x / GRID_SIZE) === pathX2 &&
Math.floor(wall.y / GRID_SIZE) === j)
);
}
}
// 确保玩家有足够空间移动
for (let i = baseX - 2; i <= baseX + 2; i++) {
for (let j = baseY - 3; j <= baseY - 1; j++) {
if (i >= 0 && i < GRID_COUNT && j >= 0 && j < GRID_COUNT) {
this.walls = this.walls.filter(wall =>
!(Math.floor(wall.x / GRID_SIZE) === i &&
Math.floor(wall.y / GRID_SIZE) === j)
);
}
}
}
}
spawnEnemies() {
// 初始化敌人数组
this.enemies = [];
this.activeEnemies = Math.min(4, this.enemyCount); // 最多同时4个敌人
// 在顶部生成敌人
for (let i = 0; i < this.activeEnemies; i++) {
this.spawnEnemy(i);
}
}
spawnEnemy(index) {
const spawnPoints = [
{x: 0, y: 0},
{x: CANVAS_SIZE - GRID_SIZE, y: 0},
{x: CANVAS_SIZE / 2 - GRID_SIZE / 2, y: 0}
];
const spawnPoint = spawnPoints[index % spawnPoints.length];
const enemy = new Tank(
spawnPoint.x,
spawnPoint.y,
DIRECTION.DOWN,
OBJECT_TYPE.ENEMY,
this
);
this.enemies.push(enemy);
}
setupEventListeners() {
// 用于跟踪按键状态
this.keyState = {
ArrowUp: false,
ArrowRight: false,
ArrowDown: false,
ArrowLeft: false,
' ': false
};
// 键盘按下
window.addEventListener('keydown', (e) => {
if (this.keyState.hasOwnProperty(e.key)) {
this.keyState[e.key] = true;
e.preventDefault(); // 防止滚动等默认行为
}
if (this.state !== GAME_STATE.PLAYING && e.key === 'Enter') {
this.startGame();
}
});
// 键盘释放
window.addEventListener('keyup', (e) => {
if (this.keyState.hasOwnProperty(e.key)) {
this.keyState[e.key] = false;
}
});
// 开始游戏画面点击事件
this.canvas.addEventListener('click', () => {
if (this.state !== GAME_STATE.PLAYING) {
this.startGame();
}
});
}
handlePlayerInput() {
if (this.state === GAME_STATE.PLAYING && !this.player.destroyed) {
// 移动
if (this.keyState.ArrowUp) {
this.player.move(DIRECTION.UP);
} else if (this.keyState.ArrowRight) {
this.player.move(DIRECTION.RIGHT);
} else if (this.keyState.ArrowDown) {
this.player.move(DIRECTION.DOWN);
} else if (this.keyState.ArrowLeft) {
this.player.move(DIRECTION.LEFT);
}
// 射击
if (this.keyState[' ']) {
this.player.shoot();
}
}
}
startGame() {
// 重置游戏
this.setupGame();
this.changeState(GAME_STATE.PLAYING);
this.gameLoop(0);
}
changeState(state) {
this.state = state;
switch(state) {
case GAME_STATE.READY:
this.gameStatus.style.display = 'block';
this.gameStatus.innerHTML = '坦克大战\n按Enter开始游戏';
break;
case GAME_STATE.PLAYING:
this.gameStatus.style.display = 'none';
break;
case GAME_STATE.GAME_OVER:
this.gameStatus.style.display = 'block';
this.gameStatus.innerHTML = '游戏结束\n按Enter重新开始';
break;
case GAME_STATE.WIN:
this.gameStatus.style.display = 'block';
this.gameStatus.innerHTML = '胜利！\n按Enter重新开始';
break;
}
}
updateGameInfo() {
this.gameInfo.innerText = `敌人: ${this.enemyCount - this.enemiesDestroyed}`;
}
gameLoop(timestamp) {
// 计算时间差
const deltaTime = this.lastTime ? timestamp - this.lastTime : 0;
this.lastTime = timestamp;
if (this.state === GAME_STATE.PLAYING) {
// 清除画布
this.ctx.clearRect(0, 0, CANVAS_SIZE, CANVAS_SIZE);
// 处理玩家输入
this.handlePlayerInput();
// 更新和绘制游戏对象
this.update(deltaTime);
this.draw();
// 检查游戏状态
this.checkGameStatus();
// 继续游戏循环
requestAnimationFrame((time) => this.gameLoop(time));
}
}
update(deltaTime) {
// 更新玩家
if (!this.player.destroyed) {
this.player.update(deltaTime);
}
// 更新敌人
this.enemies.forEach(enemy => {
enemy.update(deltaTime);
// 敌人AI
this.updateEnemyAI(enemy, deltaTime);
});
// 更新子弹
this.bullets.forEach(bullet => {
bullet.update(deltaTime);
});
// 更新爆炸效果
this.explosions.forEach(explosion => {
explosion.update(deltaTime);
});
// 移除超出屏幕的子弹
this.bullets = this.bullets.filter(bullet =>
!bullet.destroyed &&
bullet.x >= 0 && bullet.x <= CANVAS_SIZE &&
bullet.y >= 0 && bullet.y <= CANVAS_SIZE
);
// 移除已完成的爆炸效果
this.explosions = this.explosions.filter(explosion => !explosion.completed);
// 检测子弹碰撞
this.checkBulletCollisions();
// 生成新敌人
this.spawnNewEnemies();
}
updateEnemyAI(enemy, deltaTime) {
enemy.aiTimer = (enemy.aiTimer || 0) + deltaTime;
// 每1-2秒改变方向
if (enemy.aiTimer > enemy.aiActionDelay) {
enemy.aiTimer = 0;
enemy.aiActionDelay = 1000 + Math.random() * 1000;
// 70%的概率随机移动，30%的概率朝向玩家或基地
if (Math.random() < 0.7) {
const direction = Math.floor(Math.random() * 4);
enemy.move(direction);
} else {
// 计算到玩家和基地的方向
const toPlayer = this.getDirectionTo(enemy, this.player);
const toBase = this.getDirectionTo(enemy, this.base);
// 50%概率追击玩家，50%概率追击基地
if (Math.random() < 0.5 && !this.player.destroyed) {
enemy.move(toPlayer);
} else {
enemy.move(toBase);
}
}
// 40%的概率射击
if (Math.random() < 0.4) {
enemy.shoot();
}
}
}
getDirectionTo(from, to) {
const dx = to.x - from.x;
const dy = to.y - from.y;
// 确定主要方向
if (Math.abs(dx) > Math.abs(dy)) {
return dx > 0 ? DIRECTION.RIGHT : DIRECTION.LEFT;
} else {
return dy > 0 ? DIRECTION.DOWN : DIRECTION.UP;
}
}
spawnNewEnemies() {
// 如果敌人数量不足且还有敌人待生成
if (this.enemies.length < 4 &&
this.enemiesDestroyed + this.enemies.length < this.enemyCount) {
// 在随机出生点生成敌人
this.spawnEnemy(Math.floor(Math.random() * 3));
}
}
checkBulletCollisions() {
for (let i = this.bullets.length - 1; i >= 0; i--) {
const bullet = this.bullets[i];
let bulletDestroyed = false;
// 检查子弹与墙的碰撞
for (let j = this.walls.length - 1; j >= 0; j--) {
const wall = this.walls[j];
if (this.checkCollision(bullet, wall)) {
// 子弹碰到墙
bullet.destroyed = true;
bulletDestroyed = true;
// 如果是砖墙，则销毁墙
if (wall.type === OBJECT_TYPE.BRICK) {
this.walls.splice(j, 1);
this.createExplosion(wall.x, wall.y, 0.5);
}
break;
}
}
if (bulletDestroyed) continue;
// 检查子弹与玩家的碰撞
if (!this.player.destroyed &&
bullet.owner.type === OBJECT_TYPE.ENEMY &&
this.checkCollision(bullet, this.player)) {
// 敌人子弹击中玩家
bullet.destroyed = true;
this.player.destroyed = true;
this.createExplosion(this.player.x, this.player.y, 1);
// 游戏结束
setTimeout(() => {
this.changeState(GAME_STATE.GAME_OVER);
}, 1000);
continue;
}
// 检查子弹与敌人的碰撞
for (let j = this.enemies.length - 1; j >= 0; j--) {
const enemy = this.enemies[j];
if (bullet.owner.type === OBJECT_TYPE.PLAYER &&
this.checkCollision(bullet, enemy)) {
// 玩家子弹击中敌人
bullet.destroyed = true;
this.enemies.splice(j, 1);
this.enemiesDestroyed++;
this.updateGameInfo();
this.createExplosion(enemy.x, enemy.y, 1);
break;
}
}
if (bulletDestroyed) continue;
// 检查子弹与基地的碰撞
if (!this.base.destroyed && this.checkCollision(bullet, this.base)) {
// 子弹击中基地
bullet.destroyed = true;
this.base.destroyed = true;
this.createExplosion(this.base.x, this.base.y, 1.5);
// 游戏结束
setTimeout(() => {
this.changeState(GAME_STATE.GAME_OVER);
}, 1000);
continue;
}
// 检查子弹与子弹的碰撞
for (let j = i - 1; j >= 0; j--) {
const otherBullet = this.bullets[j];
if (!otherBullet.destroyed &&
bullet.owner.type !== otherBullet.owner.type &&
this.checkCollision(bullet, otherBullet)) {
// 子弹相互碰撞
bullet.destroyed = true;
otherBullet.destroyed = true;
this.createExplosion(
(bullet.x + otherBullet.x) / 2,
(bullet.y + otherBullet.y) / 2,
0.5
);
break;
}
}
}
}
createExplosion(x, y, scale = 1) {
this.explosions.push(new Explosion(x, y, scale, this));
}
checkCollision(obj1, obj2) {
return (
obj1.x < obj2.x + obj2.width &&
obj1.x + obj1.width > obj2.x &&
obj1.y < obj2.y + obj2.height &&
obj1.y + obj1.height > obj2.y
);
}
checkGameStatus() {
// 检查是否消灭所有敌人
if (this.enemiesDestroyed >= this.enemyCount && this.enemies.length === 0) {
this.changeState(GAME_STATE.WIN);
}
}
draw() {
// 绘制墙
this.walls.forEach(wall => wall.draw(this.ctx));
// 绘制基地
this.base.draw(this.ctx);
// 绘制玩家
if (!this.player.destroyed) {
this.player.draw(this.ctx);
}
// 绘制敌人
this.enemies.forEach(enemy => enemy.draw(this.ctx));
// 绘制子弹
this.bullets.forEach(bullet => bullet.draw(this.ctx));
// 绘制爆炸效果
this.explosions.forEach(explosion => explosion.draw(this.ctx));
}
}
// 坦克类
class Tank {
constructor(x, y, direction, type, game) {
this.x = x;
this.y = y;
this.width = GRID_SIZE;
this.height = GRID_SIZE;
this.direction = direction;
this.type = type;
this.game = game;
this.moveSpeed = TANK_SPEED;
this.destroyed = false;
this.shootCooldown = 0;
this.shootDelay = this.type === OBJECT_TYPE.PLAYER ? 300 : 800; // 射击间隔
// AI相关属性
if (this.type === OBJECT_TYPE.ENEMY) {
this.aiTimer = 0;
this.aiActionDelay = 1000 + Math.random() * 1000; // 1-2秒进行AI决策
}
}
update(deltaTime) {
if (this.shootCooldown > 0) {
this.shootCooldown -= deltaTime;
}
}
draw(ctx) {
ctx.save();
// 绘制坦克底盘
ctx.fillStyle = this.type === OBJECT_TYPE.PLAYER ? '#008000' : '#7B3F00';
ctx.fillRect(this.x, this.y, this.width, this.height);
// 绘制坦克履带
ctx.fillStyle = '#333333';
const trackWidth = this.width / 6;
if (this.direction === DIRECTION.UP || this.direction === DIRECTION.DOWN) {
ctx.fillRect(this.x, this.y, trackWidth, this.height);
ctx.fillRect(this.x + this.width - trackWidth, this.y, trackWidth, this.height);
} else {
ctx.fillRect(this.x, this.y, this.width, trackWidth);
ctx.fillRect(this.x, this.y + this.height - trackWidth, this.width, trackWidth);
}
// 绘制坦克炮塔
ctx.translate(this.x + this.width / 2, this.y + this.height / 2);
ctx.rotate((this.direction * 90) * Math.PI / 180);
ctx.fillStyle = this.type === OBJECT_TYPE.PLAYER ? '#00FF00' : '#FF0000';
ctx.fillRect(-this.width / 4, -this.height / 2, this.width / 2, this.height / 2);
ctx.restore();
}
move(direction) {
// 保存原位置
const oldX = this.x;
const oldY = this.y;
// 设置新方向
this.direction = direction;
// 根据方向移动
switch(direction) {
case DIRECTION.UP:
this.y -= this.moveSpeed;
break;
case DIRECTION.RIGHT:
this.x += this.moveSpeed;
break;
case DIRECTION.DOWN:
this.y += this.moveSpeed;
break;
case DIRECTION.LEFT:
this.x -= this.moveSpeed;
break;
}
// 边界检查
this.x = Math.max(0, Math.min(CANVAS_SIZE - this.width, this.x));
this.y = Math.max(0, Math.min(CANVAS_SIZE - this.height, this.y));
// 碰撞检查
if (this.checkCollisions()) {
// 如果发生碰撞，恢复原位置
this.x = oldX;
this.y = oldY;
// 如果是敌人，随机选择新方向
if (this.type === OBJECT_TYPE.ENEMY) {
const newDirection = Math.floor(Math.random() * 4);
if (newDirection !== direction) {
this.direction = newDirection;
}
}
return false;
}
return true;
}
checkCollisions() {
// 检查与墙的碰撞
for (const wall of this.game.walls) {
if (this.game.checkCollision(this, wall)) {
return true;
}
}
// 检查与基地的碰撞
if (this.game.checkCollision(this, this.game.base)) {
return true;
}
// 检查与其他坦克的碰撞
if (this.type === OBJECT_TYPE.PLAYER) {
// 玩家与敌人碰撞
for (const enemy of this.game.enemies) {
if (this.game.checkCollision(this, enemy)) {
return true;
}
}
} else {
// 敌人与玩家碰撞
if (!this.game.player.destroyed && this.game.checkCollision(this, this.game.player)) {
return true;
}
// 敌人与敌人碰撞
for (const enemy of this.game.enemies) {
if (this !== enemy && this.game.checkCollision(this, enemy)) {
return true;
}
}
}
return false;
}
shoot() {
if (this.shootCooldown <= 0) {
// 设置射击冷却时间
this.shootCooldown = this.shootDelay;
// 计算子弹起始位置
let bulletX = this.x + this.width / 2 - 2;
let bulletY = this.y + this.height / 2 - 2;
// 根据方向调整子弹位置
switch(this.direction) {
case DIRECTION.UP:
bulletY = this.y - 4;
break;
case DIRECTION.RIGHT:
bulletX = this.x + this.width;
break;
case DIRECTION.DOWN:
bulletY = this.y + this.height;
break;
case DIRECTION.LEFT:
bulletX = this.x - 4;
break;
}
// 创建子弹
const bullet = new Bullet(
bulletX,
bulletY,
this.direction,
this,
this.game
);
// 添加到游戏中
this.game.bullets.push(bullet);
return true;
}
return false;
}
}
// 子弹类
class Bullet {
constructor(x, y, direction, owner, game) {
this.x = x;
this.y = y;
this.width = 4;
this.height = 4;
this.direction = direction;
this.owner = owner;
this.game = game;
this.speed = BULLET_SPEED;
this.destroyed = false;
}
update(deltaTime) {
// 根据方向移动
switch(this.direction) {
case DIRECTION.UP:
this.y -= this.speed;
break;
case DIRECTION.RIGHT:
this.x += this.speed;
break;
case DIRECTION.DOWN:
this.y += this.speed;
break;
case DIRECTION.LEFT:
this.x -= this.speed;
break;
}
}
draw(ctx) {
ctx.fillStyle = this.owner.type === OBJECT_TYPE.PLAYER ? '#FFFFFF' : '#FFA500';
ctx.fillRect(this.x, this.y, this.width, this.height);
}
destroy() {
this.destroyed = true;
}
}
// 墙类
class Wall {
constructor(x, y, type, game) {
this.x = x;
this.y = y;
this.width = GRID_SIZE;
this.height = GRID_SIZE;
this.type = type;
this.game = game;
}
draw(ctx) {
if (this.type === OBJECT_TYPE.BRICK) {
// 砖墙
ctx.fillStyle = '#964B00';
ctx.fillRect(this.x, this.y, this.width, this.height);
// 墙缝
ctx.fillStyle = '#000000';
const brickSize = this.width / 4;
for (let i = 0; i < 4; i++) {
for (let j = 0; j < 4; j++) {
if ((i + j) % 2 === 0) {
ctx.fillRect(
this.x + i * brickSize,
this.y + j * brickSize,
brickSize,
brickSize
);
}
}
}
} else if (this.type === OBJECT_TYPE.STEEL) {
// 钢板
ctx.fillStyle = '#AAAAAA';
ctx.fillRect(this.x, this.y, this.width, this.height);
// 金属光泽
ctx.fillStyle = '#FFFFFF';
ctx.fillRect(this.x + 2, this.y + 2, 4, 4);
ctx.fillStyle = '#888888';
ctx.fillRect(this.x, this.y, this.width, 2);
ctx.fillRect(this.x, this.y, 2, this.height);
ctx.fillStyle = '#666666';
ctx.fillRect(this.x + this.width - 2, this.y + this.height - 2, 2, 2);
}
}
}
// 基地类
class Base {
constructor(x, y, game) {
this.x = x;
this.y = y;
this.width = GRID_SIZE;
this.height = GRID_SIZE;
this.game = game;
this.destroyed = false;
}
draw(ctx) {
if (!this.destroyed) {
// 绘制完整基地
ctx.fillStyle = '#FFD700';
ctx.fillRect(this.x, this.y, this.width, this.height);
// 绘制基地标志
ctx.fillStyle = '#FF0000';
ctx.beginPath();
ctx.moveTo(this.x + this.width / 2, this.y + 5);
ctx.lineTo(this.x + this.width - 5, this.y + this.height - 5);
ctx.lineTo(this.x + 5, this.y + this.height - 5);
ctx.closePath();
ctx.fill();
} else {
// 绘制被摧毁的基地
ctx.fillStyle = '#333333';
ctx.fillRect(this.x, this.y, this.width, this.height);
// 绘制瓦砾
ctx.fillStyle = '#666666';
for (let i = 0; i < 10; i++) {
const rubbleX = this.x + Math.random() * this.width;
const rubbleY = this.y + Math.random() * this.height;
const rubbleSize = 2 + Math.random() * 4;
ctx.fillRect(rubbleX, rubbleY, rubbleSize, rubbleSize);
}
}
}
destroy() {
this.destroyed = true;
}
}
// 爆炸效果类
class Explosion {
constructor(x, y, scale, game) {
this.x = x;
this.y = y;
this.scale = scale;
this.game = game;
this.radius = 0;
this.maxRadius = GRID_SIZE * scale;
this.completed = false;
this.growthRate = 0.5;
}
update(deltaTime) {
if (this.radius < this.maxRadius) {
this.radius += this.growthRate * deltaTime / 16; // 基于60FPS归一化
} else {
this.completed = true;
}
}
draw(ctx) {
if (!this.completed) {
// 绘制爆炸效果
const gradient = ctx.createRadialGradient(
this.x + GRID_SIZE / 2,
this.y + GRID_SIZE / 2,
0,
this.x + GRID_SIZE / 2,