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俄罗斯方块Javascript源代码

更新时间:2013-1-18:  来源:毕业论文
俄罗斯方块Javascript源代码
<html> <style>.c {margin :1px;width:19px;height:19px;background:red;position:absolute;} .d {margin :1px;width:19px;height:19px;background:gray;position:absolute;} .f {top:0px;left:0px;background:black;position:absolute;} </style> <body></body><html> <script>     var over=false,shapes=("0,1,1,1,2,1,3,1;1,0,1,1,1,2,2,2;2,0,2,1,2,2,1,2;0,1,1,1,1,2,2,2;1,2,2,2,2,1,3,1;1,1,2,1,1,2,2,2;0,2,1,2,1,1,2,2").split(";");     function create(tag,css){         var elm=document.createElement(tag);         elm.className = css;         document.body.appendChild(elm);         return elm;}     function Tetris(c, t, x, y){         var c=c?c:"c";         this.divs = [create("div",c),create("div",c),create("div",c),create("div",c)];         this.reset = function(){             this.x = typeof x != 'undefined'?x:3;             this.y = typeof y != 'undefined'?y:0;             this.shape = t?t:shapes[Math.floor(Math.random()*(shapes.length-0.00001))].split(",");             this.show();             if(this.field&&this.field.check(this.shape,this.x,this.y,'v')=='D'){                 over=true;                 this.field.fixShape(this.shape,this.x,this.y);                 alert('game over');}}         this.show = function(){             for(var i in this.divs){                 this.divs[i].style.left = (this.shape[i*2]*1+this.x)*20+'px';                 this.divs[i].style.top = (this.shape[i*2+1]*1+this.y)*20+'px';}}         this.field=null;         this.hMove = function(step){             var r = this.field.check(this.shape,this.x- -step,this.y,'h');             if(r!='N'&&r==0){                 this.x-=-step;                 this.show();}}         this.vMove = function(){             if(this.field.check(this.shape,this.x,this.y- -1,'v')=='N'){                 this.y++;                 this.show();}             else{                 this.field.fixShape(this.shape,this.x,this.y);                 this.field.findFull();                 this.reset();}}         this.rotate = function(){             var s=this.shape;             var newShape=[3-s[1],s[0],3-s[3],s[2],3-s[5],s[4],3-s[7],s[6]];             var r = this.field.check(newShape,this.x,this.y,'h');             if(r=='D')return;             if(r==0){                 this.shape=newShape;                 this.show();}             else if(this.field.check(newShape,this.x-r,this.y,'h')==0){                 this.x-=r;                 this.shape=newShape;                 this.show();}}         this.reset();}     function Field(w,h){         this.width = w?w:10;         this.height = h?h:20;         this.show = function(){             var f = create("div","f")             f.style.width=this.width*20+'px';             f.style.height=this.height*20+'px';}         this.findFull = function(){             for(var l=0;l<this.height;l++){                 var s=0;                 for(var i=0;i<this.width;i++){                     s+=this[l*this.width+i]?1:0;}                 if(s==this.width){                     this.removeLine(l);}}}         this.removeLine = function(line){             for(var i=0;i<this.width;i++){                 document.body.removeChild(this[line*this.width+i]);}             for(var l=line;l>0;l--){                 for(var i=0;i<this.width;i++){                     this[l*this.width- -i]=this[(l-1)*this.width- -i];                     if(this[l*this.width- -i])this[l*this.width- -i].style.top = l*20+'px';}}}         this.check = function(shape, x, y, d){             var r1=0,r2='N';             for(var i=0;i<8;i+=2){                 if(shape[i]- -x < 0 && shape[i]- -x <r1)                     {r1 = shape[i]- -x;}                 else if(shape[i]- -x>=this.width && shape[i]- -x>r1)                     {r1 = shape[i]- -x;}                 if(shape[i+1]- -y>=this.height || this[shape[i]- -x- -(shape[i+1]- -y)*this.width])                     {r2='D'}}             if(d=='h'&&r2=='N')return r1>0?r1-this.width- -1:r1;             else return r2;}         this.fixShape = function(shape,x,y){             var d=new Tetris("d",shape,x,y);             d.show();             for(var i=0;i<8;i+=2){                 this[shape[i]- -x- -(shape[i+1]- -y)*this.width]=d.divs[i/2];}}}     var f = new Field();     f.show();     var s = new Tetris();     s.field = f;     s.show();     window.setInterval("if(!over)s.vMove();",500);     document.onkeydown = function(e){         if(over)return;         var e = window.event ? window.event : e;         switch(e.keyCode){         case 38: //up             s.rotate();             break;         case 40: //down             s.vMove();             break;         case 37: //left             s.hMove(-1);             break;         case 39: //right             s.hMove(1);             break;}} </script>
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