JS 连锁泡泡 v1.1

作者：bea

泡泡的移动，碰撞，消失都完成了，越写越觉得没意思，后面的关于游戏性的东西（比如游戏有多少关，打破多少泡泡算过关）就懒得写了。有兴趣的朋友可以读一下，因为很多地方用到闭包修正setInterval(这个函数比较贱)。面向对象，注释比较完整。

<html>
<head>
<title>原创JS连锁泡泡 v1.1</title>
<style>
body{
margin: 0px;
padding: 0px;
background-color: #000;
}
#main{
border: solid red 0px;
width: 800px;
height: 600px;
font-size: 48px;
position: absolute;
background-color: #fff;
}
.little{
height: 15px;
width: 15px;
font-size: 1px;
border: solid #ccc 0px;
position: absolute;
left: 100px;
top: 100px;
background: url(/upload/20090928170442418.gif) no-repeat;
filter: alpha(opacity=30);
}
.big{
height: 61px;
width: 61px;
font-size: 9pt;
border: solid #ccc 0px;
position: absolute;
left: 0px;
top: 0px;
background: url(/upload/20090928170442175.gif) no-repeat;
/**使显示的分数居中**/
line-height: 61px;
color: #fff;
filter: alpha(opacity=30);
}
#info{
position: absolute;
left: 820px;
top 20px;
border: solid #fff 1px;
height: 600px;
width: 300px;
color: #fff;
padding: 5px;
}
#score{
float: right;
border: solid #ccc 1px;
height: 10px;
width: 80px;
margin: 5px;
font-size: 30px;
}
</style>
</head>
<body>
<div id="main">
<div id="score">0</div>
</div>
<div id="info">
原创JS连锁泡泡 v1.1

原创作者 sunxing007

转载请务必注明来自：

<a href="http://blog.csdn.net/sunxing007">http://blog.csdn.net/sunxing007</a>

开发环境：IE8 暂时没有考虑兼容性

</div>
</body>
</html>
<script type="text/javascript">
/*******************************************************
* 原创JS连锁泡泡 v1.1
* 原创作者 sunxing007
* 转载请务必注明来自：http://blog.csdn.net/sunxing007
*******************************************************/
var doc = document;
function $(id){return doc.getElementById(id)};
var container = $('main');
var score_ele = $('score');
try{
//针对ie6缓存背景图
document.execCommand("BackgroundImageCache", false, true);
}catch(e){alert(e)};
/*******************************************************/
//系统参数
//小泡泡半径
var little_radius = 7;
//爆炸后的泡泡半径
var big_radius = 30;
//半径差
var delta_radius = big_radius - little_radius;
//容器宽度
var container_width = 800;
//容器高度
var container_height = 600;
//与定义的泡泡移动的4个方向
//[x,y]代表x方向的增量和y方向的增量，也就确定了移动方向
var direct = [[1,1],[1,-1],[-1,1],[-1,-1]];
//爆炸后的泡泡集合
var chained_bubbles = [];
//所有的泡泡方便管理
var all_bubbles = [];
/*****************************************************/
//泡泡模型
function Bubble(left, top, bgPos, score, dirIndex){
var ele = doc.createElement('div');
ele.align = 'center';
ele.className = 'little';
ele.style.left = left + 'px';
ele.style.top = top + 'px';
this.bgPos = bgPos;
ele.style.backgroundPositionX = -bgPos*(little_radius*2+1);
this.element = ele;
ele.bubble = this;
this.score = score;
this.exploded = false;
this.dirIndex = dirIndex;
this.container.appendChild(ele);
this.container.onclick = function(){
if(window.curBubble){
//curBubble.distroy.apply(curBubble);
chained_bubbles.push(curBubble);
curBubble.explode.apply(curBubble);
curBubble.container.onclick = null;
}
}
ele.onmouseover = function(){
this.style.filter = 'alpha(opacity=100)';
window.curBubble = ele.bubble;

}
ele.onmouseout = function(){
this.style.filter = 'alpha(opacity=30)';
}
}
Bubble.prototype = {
//容器的引用
container: $('main'),
//移动泡泡
move: function(){
if(chained_bubbles.length>0){
for(var i=0; i<chained_bubbles.length; i++){
if(this.crushed(chained_bubbles[i])){
this.explode();
}
}
}
var _self = this;
//连续移动泡泡的函数，因为要用到setInterval,
//所以这个函数作成闭包
var _f = function(){
if(chained_bubbles.length>0){
for(var i=0; i<chained_bubbles.length; i++){
if(this.crushed(chained_bubbles[i])){
this.explode();
break;
}
}
}
var l = parseInt(this.element.style.left) + direct[this.dirIndex][0];
var t = parseInt(this.element.style.top) + direct[this.dirIndex][1];
//status = 'l:' + l + " t:" + t;
if(this.checkBorder(l, t)){
this.element.style.left = l;
this.element.style.top = t;
}
else{
//this.stop();
this.changeDirect();
}
}
this.timer = setInterval(function(){
_f.apply(_self);
//移动速度
}, 10)
},
//停止移动
stop: function(){
clearInterval(this.timer);
},
//边界检查看泡泡有没有超出容器
checkBorder: function(l, t){
if(l>(container_width-big_radius-1-little_radius)||l<(big_radius-little_radius)||t>(container_height-big_radius-1-little_radius)||t<(big_radius-little_radius)){
return false;
}
return true;
},
//碰壁后改变泡泡的移动方向
changeDirect: function(){
var _l = parseInt(this.element.style.left);
var _t = parseInt(this.element.style.top);
for(var i=1; i<=4; i++){
if(direct[this.dirIndex][0]==-direct[(i+this.dirIndex)%4][0]&&direct[this.dirIndex][1]==-direct[(i+this.dirIndex)%4][1]){
continue;
}
var l = _l + direct[(i+this.dirIndex)%4][0];
var t = _t + direct[(i+this.dirIndex)%4][1];
if(this.checkBorder(l, t)){
this.dirIndex = (i+this.dirIndex)%4;
break;
}
else{
continue;
}
}
},
//泡泡爆炸
explode: function(){
this.stop();
this.element.style.left = parseInt(this.element.style.left) - delta_radius;
this.element.style.top = parseInt(this.element.style.top) - delta_radius;
this.element.className = 'big';
this.element.style.backgroundPositionX = - this.bgPos*(big_radius*2+1);
this.element.innerText = this.score;
this.exploded = true;
score_ele.innerText = parseInt(score_ele.innerText) + this.score;
chained_bubbles.push(this);
this.fade.apply(this);
},
/**是否和另外一个已经爆炸的泡泡碰撞了**/
crushed: function(other){
if(!other.exploded){
return false;
}
if(!other.element) return false;
var l = parseInt(other.element.style.left);
var t = parseInt(other.element.style.top);
var w = big_radius*2-8;//big_radius*2+1;
var h = w;
var pt = [,,,];
pt[0] = [parseInt(this.element.style.left) - delta_radius, parseInt(this.element.style.top) - delta_radius];
pt[1] = [pt[0][0]+w,pt[0][1]];
pt[2] = [pt[0][0]+w,pt[0][1]+h];
pt[3] = [pt[0][0],pt[0][1]+h];
for(var i=0; i<4; i++){
if(pt[i][0]>l&&pt[i][1]>t&&pt[i][0]<=(l+w)&&pt[i][1]<=(t+h)){
return true;
}
}
return false;
},
//爆炸的泡泡逐渐消失
fade: function(){
var _self = this;
var opacity = 28;
var _f = function(){
this.element.style.filter = 'alpha(opacity=' + (opacity-2) + ')';
opacity -=2;
if(opacity==0){
this.distroy();
}
};
this.timer = setInterval(function(){
_f.apply(_self);
}, 200);
},
//析构方法因为对象中很多地方涉及对象相互引用
//需要在析构函数中消除环形引用，以防内存泄露
distroy: function(){
if(this.timer){
clearInterval(this.timer);
}
for(var j=0; j<chained_bubbles.length; j++){
//if(chained_bubbles[j]==null) continue;
if(chained_bubbles[j]===this){
chained_bubbles.splice(j, 1);
//chained_bubbles[j] = null;
status = 'distroyed from chained_bubbles[' + j + ']';
break;
}
}
for(var i=0; i<all_bubbles.length; i++){
if(!all_bubbles[i].element){
all_bubbles.splice(i, 1);
}
if(all_bubbles[i]===this){
all_bubbles.splice(i, 1);
status = 'distroyed from all_bubbles[' + i + ']';
break;
}
}
var _e = this.element;
this.element = null;
_e.onclick = null;
_e.onmouseover = null;
_e.onmouseout = null;
_e.bubble = null;
var _c = this.container;
this.container = null;
_c.removeChild(_e);

}

}
//工厂方法创造泡泡
function createBubble(){
var left = Math.floor(Math.random()*710) + 31;
var top = Math.floor(Math.random()*510) + 31;
var bgIndex = Math.floor(Math.random()*6);
var score = Math.floor(Math.random()*10) * 50;
var dirIndex = Math.floor(Math.random()*4)
var b = new Bubble(left, top, bgIndex, score, dirIndex);
all_bubbles.push[b];
return b;
}
createBubble().move();
createBubble().move();
createBubble().move();

createBubble().move();
createBubble().move();
createBubble().move();
createBubble().move();
createBubble().move();
createBubble().move();
createBubble().move();
createBubble().move();
createBubble().move();
createBubble().move();
createBubble().move();
createBubble().move();
createBubble().move();
createBubble().move();
createBubble().move();
createBubble().move();
createBubble().move();
createBubble().move();
createBubble().move();
createBubble().move();
createBubble().move();
createBubble().move();

/*******************************************************
* 原创JS连锁泡泡 v1.1
* 原创作者 sunxing007
* 转载请务必注明来自：http://blog.csdn.net/sunxing007
*******************************************************/
</script>

[Ctrl+A 全选注:
如需引入外部Js需刷新才能执行]

转载请务必注明来自：http://blog.csdn.net/sunxing007

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JS 连锁泡泡 v1.1

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