［代码］HTML5随机弹跳舞动的小球

2014-02-23 08:45:52 -0500

HTML5 随机弹跳的小球，使用了html5新功能：可以控制笔记本风扇（电脑端）。狂点addBall 是能听到笔记本的风扇声的（手机当然没效果啦）效果更像是Flash，挺有意思的。转自源码爱好者

<!doctype html>
<html lang="en">
<head>
<title>舞动的小球</title>
<style>
body{
	font-family: 微软雅黑;	
}
body,h1{
	margin:0;
}
canvas{
	display:block;margin-left: auto;margin-right: auto;
	border:1px solid #DDD;	
	background: -webkit-linear-gradient(top, #222,#111);
}	
</style>
</head>
<body>
	<h1>舞动的小球</h1>
<canvas id="canvas" >
	
</canvas>
<button id="stop">stop</button>
<button id="run">run</button>
<button id="addBall">addBall</button>
<script src="../js/jquery-1.10.1.min.js"></script>
<script>
var nimo={
aniamted:null,
content:null,
data:{
	radiusRange:[5,20],
	speedRange:[-5,5],
	scrollHeight:null,
	scrollWdith:null
},
balls:[],
ele:{
	canvas:null		
},
fn:{
	creatRandom:function(startInt,endInt){//生产随机数
		var iResult;	
		iResult=startInt+(Math.floor(Math.random()*(endInt-startInt+1)));
		return iResult
	},
		init:function(){
			nimo.data.scrollWdith=document.body.scrollWidth;
			nimo.data.scrollHeight=document.body.scrollHeight;
			nimo.ele.canvas=document.getElementById('canvas');	
			nimo.content=nimo.ele.canvas.getContext('2d');			
			nimo.ele.canvas.width=nimo.data.scrollWdith-50;
			nimo.ele.canvas.height=nimo.data.scrollHeight-100;
		},
		addBall:function(){
			var aRandomColor=[];
			aRandomColor.push(nimo.fn.creatRandom(0,255));
			aRandomColor.push(nimo.fn.creatRandom(0,255));
			aRandomColor.push(nimo.fn.creatRandom(0,255));	
			var iRandomRadius=nimo.fn.creatRandom(nimo.data.radiusRange[0],nimo.data.radiusRange[1]);
			var oTempBall={
				coordsX:nimo.fn.creatRandom(iRandomRadius,nimo.ele.canvas.width-iRandomRadius),
				coordsY:nimo.fn.creatRandom(iRandomRadius,nimo.ele.canvas.height-iRandomRadius),
				radius:iRandomRadius,				
				bgColor:'rgba('+aRandomColor[0]+','+aRandomColor[1]+','+aRandomColor[2]+',0.5)'				
			};	
			oTempBall.speedX=nimo.fn.creatRandom(nimo.data.speedRange[0],nimo.data.speedRange[1]);
			if(oTempBall.speedX===0){
				oTempBall.speedX=1
			}
			if(oTempBall.speedY===0){
				oTempBall.speedY=1
			}
			oTempBall.speedY=nimo.fn.creatRandom(nimo.data.speedRange[0],nimo.data.speedRange[1]);
			nimo.balls.push(oTempBall)
		},
		drawBall:function(bStatic){			
			var i,iSize;
			nimo.content.clearRect(0,0,nimo.ele.canvas.width,nimo.ele.canvas.height)
			for(var i=0,iSize=nimo.balls.length;i<iSize;i++){
				var oTarger=nimo.balls[i];				
				nimo.content.beginPath();
				nimo.content.arc(oTarger.coordsX,oTarger.coordsY,oTarger.radius,0,10);
				nimo.content.fillStyle=oTarger.bgColor;				
				nimo.content.fill();
				if(!bStatic){
					if(oTarger.coordsX+oTarger.radius>=nimo.ele.canvas.width){
						oTarger.speedX=-(Math.abs(oTarger.speedX))
					}
					if(oTarger.coordsX-oTarger.radius<=0){
						oTarger.speedX=Math.abs(oTarger.speedX)
					}
					if(oTarger.coordsY-oTarger.radius<=0){
						oTarger.speedY=Math.abs(oTarger.speedY)
					}
					if(oTarger.coordsY+oTarger.radius>=nimo.ele.canvas.height){
						oTarger.speedY=-(Math.abs(oTarger.speedY))
					}
					oTarger.coordsX=oTarger.coordsX+oTarger.speedX;
					oTarger.coordsY=oTarger.coordsY+oTarger.speedY;				
				}				
			}
		},
		run:function(){
			nimo.fn.drawBall();
			nimo.aniamted=setTimeout(function(){
				nimo.fn.drawBall();
				nimo.aniamted=setTimeout(arguments.callee,10)
			},10)
		},
		stop:function(){
			clearTimeout(nimo.aniamted)
		}
	}
}
window.onload=function(){
	nimo.fn.init();
	var i;
	for(var i=0;i<10;i++){
		nimo.fn.addBall();
	}
	nimo.fn.run();
	document.getElementById('stop').onclick=function(){
		nimo.fn.stop()
	}
	document.getElementById('run').onclick=function(){
		nimo.fn.stop()
		nimo.fn.run()
	}
	document.getElementById('addBall').onclick=function(){
		var i;
		for(var i=0;i<10;i++){
			nimo.fn.addBall();		
		}
		nimo.fn.drawBall(true);
	}
}
</script>
</body>
</html>

舞动的小球

提示：addball增加小球，stop停止，run开始

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----Comments(2)----
轩辕银河 (@zpl) | @ at 2014-02-23 20:05:
厉害

ئۇيغۇر ي (@altun) | @ at 2014-02-23 12:05:
ياخشى !!!!!!!

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