一个简单的JS游戏，需要jquery插件，是根据Floyd的打飞机游戏进行了一些简化和修改，界面比较丑陋，添加些素材就好看多啦，比如加个背景图片，子弹换成各种礼物图片，黄色板砖换成礼物篮等等，编码闲暇之余用来放松还是不错的。
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" ""><html xmlns=""><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8" /><title>飞机接子弹</title><style>#panel{height:400px;width:300px;background:Black;position:absolute;left:100px;top:100px;overflow:hidden;}#panel div{position:absolute;left:0;color:White;font-size:12px;}#panel .time{top:0;}#panel .canBigCount{top:12px;}#panel .score{top:24px;}</style></head><body><br /><div style="color:Red;">游戏说明：方向键左右控制移动，空格为变大5秒，吃到白色加100分，红色扣100分，蓝色增加一次变大</div><div><input type="button" value="开始" onclick="GameStart()" /></div><div id="panel" tabindex="0"><div class="time">时间：<span id="time">60</span></div><div class="canBigCount">可变大次数：<span id="canBigCount">1</span></div><div class="score">分数：<span id="score">0</span></div></div><script type="text/javascript" src="demo.js"></script></body></html>
var Fly = function () {//板砖dom元素this.dom = null;//板砖信息this.left = 0;this.top = 0;this.width = 0;this.height = 0;//移动状态this.isMove = false;//setInterval idthis.moveId = null;}Fly.prototype = {//移动位移movepx: 10,//移动位置更新频率moveSpeed: 30,//初始化板砖位置init: function (gameWidth, gameHeight) {this.dom = $('#fly');this.width = this.dom.width();this.height = this.dom.height();this.left = (gameWidth – this.width) / 2;this.top = gameHeight – this.height;this.update();},//更新位置update: function () {this.dom.css({ 'left': this.left, 'top': this.top });},//键盘按下事件keydown: function (e, gameWidth) {switch (e.keyCode) {//方向左case 37: {if (!this.isMove) {this.isMove = true;this.move('left');}break;};//方向右case 39: {if (!this.isMove) {this.isMove = true;this.move('right', gameWidth);}break;};}},//键盘释放事件keyup: function (e) {if (e.keyCode == 37 || e.keyCode == 39) {this.stop();}},//板砖移动move: function (dir, gameWidth) {_this = this;if (dir == 'left') {this.moveId = setInterval(function () {_this.left = _this.left – _this.movepx <= 0 ? 0 : _this.left – _this.movepx;_this.update();}, this.moveSpeed);}else {this.moveId = setInterval(function () {_this.left = _this.left + _this.movepx >= gameWidth – _this.width ? gameWidth – _this.width : _this.left + _this.movepx;_this.update();}, this.moveSpeed);}},stop: function () {this.isMove = false;clearInterval(this.moveId);}}//子弹类,type为类型var Bullet = function (type) {//子弹dom元素this.dom = null;//子弹信息this.left = 0;this.top = 0;this.width = 0;this.height = 0;this.type = type;this.create();}Bullet.prototype = {//子弹类型与颜色映射表bullettype: {"good": "White","bad": "Blue","heart": "Red"},//每次移动位移movepx: 10,//子弹速度movespeed: 50,//创建子弹domcreate: function () {this.width = 5;this.height = 5;this.dom = $('<div style="position:absolute;width:' + this.width + 'px;height:' + this.height + 'px;overflow:hidden;background:' + this.bullettype[this.type] + ';"></div>');},//初始化子弹位置initPosition: function (gameWidth) {this.left = parseInt(Math.random() * gameWidth + 1, 10);this.dom.css('left', this.left);},//子弹动画,height为游戏背景高度animation: function (height) {var _this = this;//向下移动函数var downmove = function () {//更新位置_this.top = _this.top + _this.movepx;_this.update();//判断子弹位置以及是否击中板砖if (_this.top < height && !_this.isBeatFly()) {setTimeout(downmove, _this.movespeed);}else {//动画结束触发事件_this.onEnd();}}downmove();},//更新位置update: function () {this.dom.css({ 'left': this.left, 'top': this.top });},//判断子弹击中板砖否checkBeatFly: function (fly) {if (this.left >= fly.left && this.left + this.width <= fly.left + fly.width) {if (this.top + this.height >= fly.top && this.top + this.height <= fly.top + fly.height) {return true;}}return false;},//动画结束触发事件，外部覆盖onEnd: function () { },//子弹是否击中板砖以及击中后处理事件，外部覆盖isBeatFly: function () { }}var Game = {//分值gameScore: 100,//游戏背景dom元素gamePanel: null,//游戏背景宽度gameWidth: 0,//游戏背景高度gameHeight: 0,//子弹生成频率bulletHz: 200,//板砖fly: null,//分数score: 0,//爱心heart: 0,//时间time: 0,//是否开始start: false,//初始化init: function () {//初始化游戏背景数据this.gamePanel = $('#panel');this.gameWidth = this.gamePanel.width();this.gameHeight = this.gamePanel.height();this.score = 0;this.heart = 0;this.time = 30;$('#time,#heart,#score').html(0);//初始化板砖this.fly = new Fly();this.fly.init(this.gameWidth, this.gameHeight);//为body绑定键盘事件$('body').off('keydown').off('keyup').keydown(function (e) {Game.fly.keydown(e, Game.gameWidth);}).keyup(function (e) {Game.fly.keyup(e);});//初始化子弹var _this = this;var process = function () {//随机数，决定生成加分或扣分子弹var random = parseInt(Math.random() * 10 + 1, 10);//随机数，决定生成爱心子弹var heart = parseInt(Math.random() * 50 + 1, 10);//新建一个子弹对象var bullet = new Bullet(random % 3 == 0 ? 'bad' : heart < 10 ? 'heart' : 'good');bullet.initPosition(_this.gameWidth);//覆盖子弹动画结束事件bullet.onEnd = function () {this.dom.remove();this.dom = null;}//覆盖子弹是否击中飞机以及击中后处理事件bullet.isBeatFly = function () {if (this.checkBeatFly(_this.fly)) {_this.changeScore(this.type);return true;}return false;}_this.gamePanel.append(bullet.dom);bullet.animation(_this.gameHeight);if (_this.time > 0) {setTimeout(process, _this.bulletHz);};}process();//计时this.startTime();this.start = true;},//改变分数changeScore: function (type) {switch (type) {case 'heart':this.heart += 1;$('#heart').html(this.heart);break;case 'good':this.score += 1;break;default:this.score -= 1;break;}$('#heart').html(this.heart);$('#score').html(this.score);},//计时startTime: function () {var _this = this;$('#time').html(this.time);setTimeout(function () {if (_this.time > 0) {_this.time -= 1;_this.startTime();} else {$('body').off('keydown').off('keyup');Game.fly.stop();_this.start = false;}}, 1000);}}function GameStart() {if (Game.start == false) {Game.init();}}
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