JS推箱子游戏

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
</head>
<body>
<canvas id=dt width="560" height="560"></canvas>
<script>

level1=[ 
 [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], 
 [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], 
 [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], 
 [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], 
 [0,0,0,0,0,0,1,1,1,0,0,0,0,0,0,0], 
 [0,0,0,0,0,0,1,2,1,0,0,0,0,0,0,0], 
 [0,0,0,0,0,0,1,0,1,1,1,1,0,0,0,0], 
 [0,0,0,0,1,1,1,3,0,3,2,1,0,0,0,0], 
 [0,0,0,0,1,2,0,3,4,1,1,1,0,0,0,0], 
 [0,0,0,0,1,1,1,1,3,1,0,0,0,0,0,0], 
 [0,0,0,0,0,0,0,1,2,1,0,0,0,0,0,0], 
 [0,0,0,0,0,0,0,1,1,1,0,0,0,0,0,0], 
 [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], 
 [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], 
 [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0], 
 [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]]; 
 
dt=document.getElementById('dt')
dt.width="560";
dt.height="560";

w=32,h=32;
ctx = dt.getContext('2d')
var curMan;
var curarry= [];
curarry=level1
//定义小人位置
function point(x,y) 
{ 
    this.x=x; 
    this.y=y; 
}
var manPosition = new point(5,5);//初始化小人位置

//定义图片
block=new Image()
block.src="data:image/block.gif"
wall=new Image()
wall.src="data:image/wall.png" 
ball=new Image()
ball.src="data:image/ball.png" 
box=new Image()
box.src="data:image/box.png" 
up=new Image()
up.src="data:image/up.png" 
left=new Image()
left.src="data:image/left.png"
right=new Image()
right.src="data:image/right.png"
down=new Image()
down.src="data:image/down.png"

function init()
{
 curMan=down;
 initMap();
 initMap(curarry); 
}

//画地图
function initMap() { 
 for (m=0;m<level1.length;m++) 
    { 
        for (n=0;n<16;n++) 
        {  pic = block;
        ctx.drawImage(pic,w*m-(pic.width-w)/2,h*n-(pic.height-h),pic.width,pic.height);
          switch (level1[m][n]) 
            { 
            case 1:
                pic = wall; 
                break; 
            case 2:
                pic = ball; 
                break; 
            case 3:
                pic = box; 
                break; 
            case 4:
                pic = curMan; 
                manPosition.x=m 
                manPosition.y=n;
                break; 
            } 
            ctx.drawImage(pic,w*m-(pic.width-w)/2,h*n-(pic.height-h),pic.width,pic.height); 
        } 
    }
}

//绑定键盘：上下左右+AWDS
document.onkeydown=function(ev) 
{ 
    var p1;
    var p2;
 var keyCode = ev.keyCode;
    switch(keyCode) 
    { 
    case 37: 
      curMan=left; 
      p1=new point(manPosition.x-1,manPosition.y); 
      p2=new point(manPosition.x-2,manPosition.y);
       break; 
     case 65: 
      curMan=left; 
      p1=new point(manPosition.x-1,manPosition.y); 
      p2=new point(manPosition.x-2,manPosition.y);
       break; 
     case 38: 
       curMan=up;  
       p1=new point(manPosition.x,manPosition.y-1); 
       p2=new point(manPosition.x,manPosition.y-2);
       break; 
     case 87: 
       curMan=up;  
       p1=new point(manPosition.x,manPosition.y-1); 
       p2=new point(manPosition.x,manPosition.y-2);
       break; 
     case 39: 
       curMan=right;  
       p1=new point(manPosition.x+1,manPosition.y); 
       p2=new point(manPosition.x+2,manPosition.y);
        break; 
     case 68: 
       curMan=right;  
       p1=new point(manPosition.x+1,manPosition.y); 
       p2=new point(manPosition.x+2,manPosition.y);
        break; 
     case 40: 
       curMan=down;  
       p1=new point(manPosition.x,manPosition.y+1); 
       p2=new point(manPosition.x,manPosition.y+2);
       break; 
     case 83: 
       curMan=down;  
       p1=new point(manPosition.x,manPosition.y+1); 
       p2=new point(manPosition.x,manPosition.y+2);
       break;    
    }
   
    if(curarry[p1.x][p1.y]==1)return;//如果p1位置是墙，则不能移动
    if(curarry[p1.x][p1.y]==3)//如果p1位置是箱子，则需要考虑p2位置
    {
     if(curarry[p2.x][p2.y]==1 || curarry[p2.x][p2.y]==3)return;//如果p2位置是箱子或墙，则不能移动
     else{
      curarry[p1.x][p1.y]=4; 
            curarry[p2.x][p2.y]=3;
            if(curarry[manPosition.x][manPosition.y]==2)  //如果小人所处的位置是球
                curarry[manPosition.x][manPosition.y]=2;  //则把小人所处的位置显示为球
                else 
                curarry[manPosition.x][manPosition.y]=0;  //否则则把小人所处的位置显示为草地
                initMap(); 
                initMap(curarry);
     }
    }
    else
    {
     curarry[p1.x][p1.y]=4; //否则p1显示为小人
      if(curarry[manPosition.x][manPosition.y]==2) 
     curarry[manPosition.x][manPosition.y]=2; 
      else 
     curarry[manPosition.x][manPosition.y]=0; 
      initMap(); 
      initMap(curarry); 
    }
}
init()
</script>
</body>
</html>

 

作者：kerwin-chyl

文章链接：https:////www.cnblogs.com/kerwin-chyl

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