JS实现网页游戏中滑块响应鼠标点击移动效果
作者：企鹅
这篇文章主要介绍了JS实现网页游戏中滑块响应鼠标点击移动效果,涉及JavaScript针对页面鼠标事件、滚动事件及元素属性等相关操作技巧,具有一定参考借鉴价值,需要的朋友可以参考下
本文实例讲述了JS实现网页游戏中滑块响应鼠标点击移动效果。分享给大家供大家参考，具体如下：
这是网页游戏中的一个有趣效果，可以完成以下几个动作：滚动、scroll 8个方向、鼠标坐标获娶对象上下左右位置获取，大家可以自己添加、MoveReady和ScrollReady两个注释掉了 取消注释后防止鼠标连续点击效果叠加。
在线演示地址如下：
http://demo.jb51.net/js/2015/js-web-game-click-move-demo/
具体代码如下：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>网页游戏中的一个有趣效果</title>
<style type="text/css">
html,body,div,span,object,iframe,h1,h2,h3,h4,h5,h6,p,blockquote,pre,a,address,big,cite,del,em,img,ins,small,strong,sub,sup,dl,dt,dd,ol,ul,li,fieldset,form,label,legend,table,tbody,tfoot,tr,th,td{margin: 0;padding: 0;border: 0;outline: 0;font-size: 100%;vertical-align: baseline;background: transparent;}
body{font:12px/24px "宋体";background:#fff;color:#333;}
ol, ul{list-style:none;}
blockquote, q {quotes:none;}
blockquote:before, blockquote:after,
q:before, q:after {content: '';content:none;}
:focus {outline:0;}
ins {text-decoration:none;}
del {text-decoration:line-through;}
table {border-collapse:collapse;border-spacing:0;}
label{cursor:pointer}
input[type="button"]{cursor:pointer}
button{cursor:pointer}
strong{font-weight:normal;}
em{font-style:normal}
a{text-decoration:none;color:#f60}
a:hover{text-decoration:underline;}
.block{width:200px;height:200px;background:#e63;position:absolute;left:50%;top:50%;border:3px solid #fdd;overflow:hidden;}
.moveBlock{width:1900px;height:2728px;background:url("//img.jbzj.com/file_images/article/201510/2015101993654799.jpg") left top;}
</style>
<script type="text/javascript">
var ie = ! -[1, ], myDate = new Date();
function Sin(x,v) {
var y = Math.round(Math.sin(Math.PI*x/180)*100)/100;
return ie?y*v*3:y*v;
}
/*返回数组序号*/
Num = function(e, eles) {
for (var i = 0; i < eles.length; i++) {
if (eles[i] == e) { return i; }
}
}
/*字符串判定*/
GetCur = function(Str, cur) {
var str = new RegExp(cur, "gi")
return str.test(Str);
}
/*DOM构造*/
var div=function(id){return new HtmlEle.init(id);}
HtmlEle={
init:function(id){
this[0]=id==Object?id:document.getElementById(id);
return this;
},
css:function(s){
for(var i in s){
this[0].style[i]=s[i];
}
},
Obj:function(){
var obj=this[0];
var objTop=obj.offsetTop,objLeft=obj.offsetLeft,objWidth=obj.offsetWidth,objHeight=obj.offsetHeight;
return {top:objTop,right:objLeft+objWidth,bottom:objTop+objHeight,left:objLeft,width:objWidth,height:objHeight}
},
MoveReady:true,
Move:function(s,point){
var obj=this[0],n=0,v=s,main=this,v2=90;
if(this.MoveReady==true){
//main.MoveReady=false;
var Top=function(){
n=n<v2?n+1:n;
var m=Sin(n,v);
if(m<Math.abs(s)){obj.style.top=P-m+"px"}else{obj.style.top=P-s+"px";clearInterval(myMove);main.MoveReady=true;};
}
var Right=function(){
n=n<v2?n+1:n;
var m=Sin(n,v);
if(m<Math.abs(s)){obj.style.left=P+m+"px"}else{obj.style.right=P+s+"px";clearInterval(myMove);main.MoveReady=true;};
}
var Bottom=function(){
n=n<v2?n+1:n;
var m=Sin(n,v);
if(m<Math.abs(s)){obj.style.top=P+m+"px"}else{obj.style.top=P+s+"px";clearInterval(myMove);main.MoveReady=true;};
}
var Left=function(){
n=n<v2?n+1:n;
var m=Sin(n,v);
if(m<Math.abs(s)){obj.style.left=P-m+"px"}else{obj.style.left=P-s+"px";clearInterval(myMove);main.MoveReady=true;};
}
switch(point){
case "top" : var P=obj.offsetTop,Point=Top;break;
case "right" : var P=obj.offsetLeft,Point=Right;break;
case "bottom" : var P=obj.offsetTop,Point=Bottom;break;
case "left" : var P=obj.offsetLeft,Point=Left;break;
}
var myMove=setInterval(Point,5)
}
},
ScrollReady:true,
Scroll:function(s,point){
var obj=this[0],n=0,v=s,main=this,v2=90;
if(this.ScrollReady==true){
//main.ScrollReady=false;
var Top=function(){
n=n<v2?n+1:n;
var m=Sin(n,v);
if(m<Math.abs(s)){obj.scrollTop=P+m}else{obj.scrollTop=P+s;clearInterval(myMove);main.ScrollReady=true;};
}
var Right=function(){
n=n<v2?n+1:n;
var m=Sin(n,v);
if(m<Math.abs(s)){obj.scrollLeft=P-m}else{obj.scrollLeft=P-s;clearInterval(myMove);main.ScrollReady=true;};
}
var Bottom=function(){
n=n<v2?n+1:n;
var m=Sin(n,v);
if(m<Math.abs(s)){obj.scrollTop=P-m}else{obj.scrollTop=P-s;clearInterval(myMove);main.ScrollReady=true;};
}
var Left=function(){
n=n<v2?n+1:n;
var m=Sin(n,v);
if(m<Math.abs(s)){obj.scrollLeft=P+m}else{obj.scrollLeft=P+s;clearInterval(myMove);main.ScrollReady=true;};
}
switch(point){
case "top" : var P=obj.scrollTop,Point=Top;break;
case "right" : var P=obj.scrollLeft,Point=Right;break;
case "bottom" : var P=obj.scrollTop,Point=Bottom;break;
case "left" : var P=obj.scrollLeft,Point=Left;break;
}
var myMove=setInterval(Point,5)
}
},
Mouse:function(e,f){
switch(e){
case "click" : this[0].onclick=f;break;
case "dbclick" : this[0].ondblclick=f;break;
case "over" : this[0].onmouseover=f;break;
case "out" : this[0].onmouseout=f;break;
}
},
MouseSite:function(e){
var e=e?e:window.event;
return {x:e.clientX,y:e.clientY}
}
}
HtmlEle.init.prototype=HtmlEle;
</script>
</head>
<body>
<div class="block" id="moveBlock">
<div class="moveBlock"></div>
</div>
<script type="text/javascript">
var sBlock=new div("moveBlock");
document.onclick=function(){
var site=sBlock.MouseSite(arguments[0]),s=200,b=30;
var objSite=sBlock.Obj();
if(objSite.left<site.x && objSite.left+objSite.width/2-b>site.x && objSite.top<site.y &&objSite.bottom>site.y)
sBlock.Scroll(s,"left");
if(objSite.right>site.x && objSite.right-objSite.width/2+b<site.x && objSite.top<site.y &&objSite.bottom>site.y)
sBlock.Scroll(s,"right");
if(objSite.top<site.y && objSite.top+objSite.height/2-b>site.y && objSite.left<site.x && objSite.right>site.x)
sBlock.Scroll(s,"top");
if(objSite.bottom>site.y && objSite.bottom-objSite.height/2+b<site.y)
sBlock.Scroll(s,"bottom");
if(objSite.left>site.x)
sBlock.Move(s,"left");
if(objSite.right<site.x)
sBlock.Move(s,"right");
if(objSite.top>site.y)
sBlock.Move(s,"top");
if(objSite.bottom<site.y)
sBlock.Move(s,"bottom");
}
window.onload=function(){sBlock[0].scrollTop=0;sBlock[0].scrollLeft=0;}
</script>
</body>
</html>
希望本文所述对大家JavaScript程序设计有所帮助。