非html5实现js版弹球游戏示例代码_javascript技巧

分数：
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#gamePanel{

width:504px;
height:504px;
background:Black;
position:relative;

}

#gamePanel .score{

font-size:20px;
color:White;
position:absolute;
left:0;
top:0;
z-index:9999;

}

#gamePanel .bullet{

width:5px;
height:15px;
position:absolute;
background:url(../img/bullet.png);
overflow:hidden;

}

#gamePanel .stick{

width:80px;
height:18px;
position:absolute;
background:blue;

}

#gamePanel .ball{

width:15px;
height:15px;
position:absolute;
background:url(../img/ball.gif);

}

#gamePanel .brick {

width : 28px;
height : 28px;
position : relative;
background : url(../img/brick.gif);
float : left;

}

#gamePanel .hideBrick {

width : 28px;
height : 28px;
position : relative;
background : black;
float : left;

}

#gamePanel .magic {

width : 27px;
height : 11px;
position : absolute;
background : green;

}

#gamePanel .shortMagic {

width : 28px;
height : 12px;
position : absolute;
background : yellow;

}

#gamePanel .bingo{

width:18px;
height:18px;
position:absolute;
background:url(../img/bingo2.png);

}

#startBtn{

border-width:20px;
border-style:solid;
border-color:Black Black Black Green;
position:absolute;
left:240px;
top:240px;
cursor:pointer;
width:0px;
height:0px;
overflow:hidden;

}

// 球类
var Ball = function() {

// 弹球dom元素
this.dom = null;

// 是否激活
this.isFirst = true;

// 弹球移动方向
this.direction = null;

this.init();

}

Ball.prototype = {

// 弹球横向移动速度
movepx : 3,

// 弹球纵向移动速度
movepy : 2,

// 弹球移动频率
movesp : 20,

// 弹球移动频率映射
movespMap : {

1 : 75,
2 : 65,
3 : 50,
4 : 40

},

// 初始化
init : function() {

this.dom = document.createElement("div");
this.dom.className = "ball";

},

// 设置弹球的初始化位置，x与y坐标
setPosition : function(x, y) {

this.dom.style.left = x + "px";
this.dom.style.top = y + "px";

},

// 弹球动画，就是移动，传入参数为游戏背景的宽与高
animation : function(gameWidth, gameHeight, stick) {

var _this = this;

// 实际的横向移动速度，左或者右
var _movepx = this.dom.offsetLeft > gameWidth/2 ? -1*this.movepx : this.movepx;
var _movepy = this.dom.offsetTop > gameHeight/2 ? this.movepy : -1*this.movepy;

// 处理移动函数
var process = function() {

// 弹球的x,y坐标
var left = _this.dom.offsetLeft;
var top = _this.dom.offsetTop;

// 是否要调转方向
if (left = gameWidth - _this.dom.clientWidth) {

_movepx *= -1;

}

var isCrashStick = _this.OnCheckCrashStick();
var isCrashBall = _this.OnCheckCrashBrick();

// 判断是否想上调转方向
if (top
_movepy *= -1;

}

// 向下移动
top = top + _movepy;
left = left + _movepx;

// 设置弹球位置
_this.dom.style.top = top + "px";
_this.dom.style.left = left + "px";

if(top > gameHeight) {

_this.onend();
alert("You Lose");

} else {

setTimeout(process, _this.movesp);

}

// 判断弹球移动方向
if (_movepx > 0 && _movepy
_this.direction = "RightUp";

return;

}

if (_movepx > 0 && _movepy > 0) {

_this.direction = "RightDown";

return;

}

if (_movepx
_this.direction = "LeftUp";

return;

}

if (_movepx 0) {

_this.direction = "LeftDown";

return;

}

};

// 开始移动
process();

},

// 外部接口，检测是否撞到魔法棒
OnCheckCrashStick : function() {},

// 外部接口，检测是否撞到砖块
OnCheckCrashBrick : function() {},

// 弹球结束事件
onend : function() {},

// 游戏结束
gameover : function() {}

}

// 砖类
var Brick = function(gamePanel) {

// 砖的dom元素
this.dom = null;

// 砖块所在的画布
this.gamePanel = gamePanel;

// 是否激活
this.isLive = true;

// 是否带有魔法棒
this.magic = null;

this.width = 28;
this.height = 28;

this.left = 0;
this.top = 0;

this.init();

}

Brick.prototype = {

// 初始化
init : function() {

this.dom = document.createElement("div");
this.dom.className = "brick";

},

// 为position: relative的Brick初始化位置
setPosition : function(x, y) {

this.left = x;
this.top = y;

},

// 为positon : relative的Brick初始化尺寸
setSize : function(width, height) {

this.width = width;
this.height = height;

},

// 初始化生成魔法棒
initMagic : function() {

var _this = this;
// 随机数
var random = parseInt(Math.random()*1000 + 1, 10);

var type = random % 5 == 0 ? "good" : random % 4 == 0 ? "bad" : "none";

// 新建一个魔法棒对象
var magic = new Magic(type);

this.magic = magic;

magic.initPosition(this);

// 将魔法棒添加进砖块中
this.gamePanel.appendChild(magic.dom);

magic.onEnd = function() {

_this.gamePanel.removeChild(magic.dom);

};

magic.animation(this.gamePanel.clientHeight);

},

// 击中后的动作
onEnd : function() {

this.isLive = false;
this.dom.className = "hideBrick";
this.initMagic();

}

}

// 魔法棒类
var Magic = function(type) {

// Magic的dom元素
this.dom = null;

// Magic的dom信息
this.left = 0;
this.top = 0;
this.width = 0;
this.height = 0;

this.type = type;

this.init();

}

Magic.prototype = {

// 魔法棒类型
magicType : {

"good" : "magic",
"bad" : "shortMagic",
"none" : ""

},

// 每次移动位移
movepy : 3,

// 移动速度
movespeed : 20,

// 初始化魔法棒
init : function() {

this.dom = document.createElement("div");

this.dom.className = this.magicType[this.type];
//this.dom.style.display = "none";

this.width = parseInt(this.dom.style.width, 10);
this.height = parseInt(this.dom.style.height, 10);

},

// 魔法棒初始化位置
initPosition : function(brick) {

this.left = brick.left;
this.top = brick.top;

this.dom.style.left = this.left + "px";
this.dom.style.top = this.top + "px";

},

// 更新位置
update : function() {

this.dom.style.left = this.left + "px";
this.dom.style.top = this.top + "px";

},

// 魔法棒动画,height为游戏背景高度
animation : function(height) {

if (this.type == "none") {

return;

}

var _this = this;

// 向下移动函数
var downMove = function() {

_this.top = _this.top + _this.movepy;
_this.update();

// 判断魔法棒下移是否越界，是否击中stick
if (_this.top
setTimeout(downMove, _this.movespeed);

} else {

// 动画结束触发事件
_this.onEnd();

}

};

downMove();

},

// 动画结束触发事件，外部覆盖
onEnd : function() {},

// 魔法棒是否击中挡板以及击中后处理事件，外部覆盖
isBeatStick : function() {}

}

// 新建棒类
var Stick = function() {

// 飞机对应的dom元素
this.dom = null;

// 是否移动中
this.isMove = false;

// 移动的ID
this.moveId = null;

// 是否弹球中
this.isSend = false;

// 变大标记
this.bigCount = 0;

// 变小标记
this.smallCount = 0;

// 接棒的宽度变大变小时做存储
this.width = 0;

this.init();

}

Stick.prototype = {

// 游戏背景Dom
gamePanel : null,

// 游戏背景宽度
gameWidth : 0,

// 游戏背景高度
gameHeight : 0,

// 魔法棒移动速度
movepx : 10,

// 魔法棒移动频率
movesp : 30,

// 方向键值对应
keyCodeAndDirection : {

37 : "left",
39 : "right"

},

// 初始化
init : function() {

this.dom = document.createElement("div");
this.dom.className = "stick";

},

// 设置位置
setPosition : function(gamePanel, width, height) {

// 将魔法棒添加进游戏背景中
this.gamePanel = gamePanel;
this.gamePanel.appendChild(this.dom);

// 设置飞机的初始位置
this.dom.style.left = (width - this.dom.clientWidth)/2 + "px";
this.dom.style.top = height - this.dom.clientHeight + "px";

// 获取到游戏背景的宽和高
this.gameWidth = width;
this.gameHeight = height;

},

// 键盘按下事件
keydown : function(e) {

var keyCode = e.keyCode;

if (!this.isMove) {

this.move(keyCode);

}

},

// 键盘释放事件
keyup : function(e) {

// 判断是否为键盘释放
if (this.keyCodeAndDirection[e.keyCode]) {

// 停止移动
this.stopMove();

} else if (e.keyCode == 32) {

// 设置为非发弹中
this.isSend = false;

}

},

// 移动
move : function(keyCode) {

// 设置为移动中
this.isMove = true;
var _this = this;

// 判断移动方向
switch(this.keyCodeAndDirection[keyCode]) {

case "left" : {

this.moveId = setInterval(function() {_this.moveLeft();}, _this.movesp);
break;

}

case "right" : {

this.moveId = setInterval(function() {_this.moveRight();}, _this.movesp);
break;

}

default : break;

}

},

// 向左移动
moveLeft : function() {

var left = this.dom["offsetLeft"];
left = left - this.movepx >= 0 ? left - this.movepx : 0;
this.dom.style["left"] = left + "px";

if (left == 0) {

this.stopMove();

}

},

// 向右移动
moveRight : function() {

var left = this.dom["offsetLeft"];
var maxDistance = this.gameWidth - this.dom.clientWidth;
left = left + this.movepx this.dom.style["left"] = left + "px";

if (left == maxDistance) {

this.stopMove();

}

},

// 变小
changeSmall : function() {

if (this.smallCount >= 1) {

return;

} else {

this.dom.style.width = 80 + "px";
this.smallCount ++;

this.bigCount >= 1 ? this.bigCount -- : this.bigCount + 0;

}

this.dom.style.left = parseInt(this.dom.style.left, 10) + 20 + "px";
this.dom.style.width = 40 + "px";

},

// 变大
changeBig : function() {

if (this.bigCount >= 1) {

return;

} else {

this.dom.style.width = 80 + "px";
this.bigCount ++;

this.smallCount >= 1 ? this.smallCount -- : this.smallCount + 0;

}

if (parseInt(this.dom.style.left, 10)
this.dom.style.width = parseInt(this.dom.style.width, 10) + 75 + parseInt(this.dom.style.left, 10)+ "px";
this.dom.style.left = 0 + "px";

return;

} else if (this.dom.style.width + 150 + parseInt(this.dom.style.left, 10) >= this.gamePanel.clientWidth) {

this.dom.style.left = parseInt(this.dom.style.left, 10) - 150 + "px";
this.dom.style.width = this.dom.style.width + 150 + "px";

return;

} else {

this.dom.style.left = parseInt(this.dom.style.left, 10) - 75 + "px";
this.dom.style.width = 150 + "px";

}

},

// 停止移动
stopMove : function() {

this.isMove = false;
clearInterval(this.moveId);

},

// 发射弹球,外部接口，
onSendBall : function() {},


// 改分数外部接口
onChangeScore : function() {}

}

// 键盘按下事件
keydown : function(e) {

var keyCode = e.keyCode;

if (!this.isMove) {

this.move(keyCode);

}

},

// 键盘释放事件
keyup : function(e) {

// 判断是否为键盘释放
if (this.keyCodeAndDirection[e.keyCode]) {

// 停止移动
this.stopMove();

} else if (e.keyCode == 32) {

// 设置为非发弹中
this.isSend = false;

}

},

// 移动
move : function(keyCode) {

// 设置为移动中
this.isMove = true;
var _this = this;

// 判断移动方向
switch(this.keyCodeAndDirection[keyCode]) {

case "left" : {

this.moveId = setInterval(function() {_this.moveLeft();}, _this.movesp);
break;

}

case "right" : {

this.moveId = setInterval(function() {_this.moveRight();}, _this.movesp);
break;

}

default : break;

}

},

// 向左移动
moveLeft : function() {

var left = this.dom["offsetLeft"];
left = left - this.movepx >= 0 ? left - this.movepx : 0;
this.dom.style["left"] = left + "px";

if (left == 0) {

this.stopMove();

}

},

// 向右移动
moveRight : function() {

var left = this.dom["offsetLeft"];
var maxDistance = this.gameWidth - this.dom.clientWidth;
left = left + this.movepx this.dom.style["left"] = left + "px";

if (left == maxDistance) {

this.stopMove();

}

},