分享自己写的Javascript的俄罗斯方块+送分
前段时间论坛上看到，大牛贴出来的Javascript版俄罗斯方块，实在是佩服之极，恰巧本人也在学习Javascript，所以先看懂了那段代码，然后自己写了一个出来，说真的看懂和能写出来完全是天壤之别，写的时候很多次都实在想不通了，只有回头再看看代码、再想想逻辑，才能接着写下去，最终还是写出来了，不过只是具备基本功能的版本而已，之后准备再出N个版本的方块出来，一步一步完善各种功能，做一个高品质的方块出来。如果大家有什么好的意见，欢迎交流~
本人QQ：605494869 新浪微博：http://weibo.com/605494869，非常欢迎加好友和互粉~
具体代码如下：
<!DOCTYPE html>
<html>
<head>
<title></title>
<style type="text/css">
.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>
<script type="text/javascript">
var row = 18;
var col = 10;
var size = 20;
var isOver = false;
var 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(";");
var tetris;
var container;
// 创建DIV的公用方法
function createElm(tag,css)
{
var elm = document.createElement(tag);
elm.className = css;
document.body.appendChild(elm);
return elm;
}
// 方块类
function Tetris(css,x,y,shape)
{
// 创建4个div用来组合出各种方块
var myCss = css?css:"c";
this.divs = [createElm("div",myCss),createElm("div",myCss),createElm("div",myCss),createElm("div",myCss)];
this.container = null;
this.refresh = function()
{
this.x = (typeof(x)!='undefined')?x:3;
this.y = (typeof(y)!='undefined')?y:0;
this.shape = shape?shape:shapes[Math.floor((Math.random()*shapes.length-0.000000001))].split(",");
if(this.container&&!this.container.check(this.x,this.y,this.shape))
{
isOver = true;
alert("游戏结束");
}
else
{
this.show();
}
}
// 显示方块
this.show = function()
{
for(var i in this.divs)
{
this.divs[i].style.top = (this.shape[i*2+1]- -this.y)*size+"px";
this.divs[i].style.left = (this.shape[i*2]- -this.x)*size+"px";
}
}
// 水平移动方块的位置
this.hMove = function(step)
{
if(this.container.check(this.x- -step,this.y,this.shape))
{
this.x += step;
this.show();
}
}
// 垂直移动方块位置
this.vMove = function(step)
{
if(this.container.check(this.x,this.y- -step,this.shape))
{
this.y += step;
this.show();
}
else
{
this.container.fixShape(this.x,this.y,this.shape);
this.container.findFull();
this.refresh();
}
}
// 旋转方块
this.rotate = function()
{
var newShape = [this.shape[1],3-this.shape[0],this.shape[3],3-this.shape[2],this.shape[5],3-this.shape[4],this.shape[7],3-this.shape[6]];
if(this.container.check(this.x,this.y,newShape))
{
this.shape = newShape;
this.show();
}
}
this.refresh();
}
function Container()
{
// 设置背景
this.createBackground = function()
{
var bgDiv = createElm("div","f");
bgDiv.style.width = size*col+"px";
bgDiv.style.height = size*row+"px";
}
// 检查边界越界
this.check = function(x,y,shape)
{
var flag = false;
var leftmost=col;
var rightmost=0;
var undermost=0;
for(var i=0;i<8;i+=2)
{
// 记录最左边水平坐标
if(shape[i]<leftmost)
{
leftmost = shape[i];
}
// 记录最右边水平坐标
if(shape[i]>rightmost)
{
rightmost = shape[i];
}
// 记录最下边垂直坐标
if(shape[i+1]>undermost)
{
undermost = shape[i+1];
}
// 判断是否碰撞
if(this[(shape[i+1]- -y)*100- -(shape[i]- -x)])
{
flag = true;
}
}
// 判断是否到达极限高度
for(var m=0;m<3;m++)
{
for(var n=0;n<col;n++)
{
if(this[m*100+n])
{
flag = true;
}
}
}
if((rightmost- -x+1)>col || (leftmost- -x)<0 || (undermost- -y+1)>row || flag)
{
return false;
}
return true;
}
// 用灰色方块替换红色方块，并在容器中记录灰色方块的位置
this.fixShape = function(x,y,shape)
{
var t = new Tetris("d",x,y,shape);
for(var i=0;i<8;i+=2)
{
this[(shape[i+1]- -y)*100- -(shape[i]- -x)] = t.divs[i/2];
}
}
// 遍历整个容器，判断是否可以消除
this.findFull = function()
{
for(var m=0;m<row;m++)
{
var count = 0;
for(var n=0;n<col;n++)
{
if(this[m*100+n])
{
count++;
}
}
if(count==col)
{
this.removeLine(m);
}
}
}
// 消除指定一行方块
this.removeLine = function(row)
{
// 移除一行方块
for(var n=0;n<col;n++)
{
document.body.removeChild(this[row*100+n]);
}
// 把所消除行上面所有的方块下移一行
for(var i=row;i>0;i--)
{
for(var j=0;j<col;j++)
{
this[i*100- -j]=this[(i-1)*100- -j]
if(this[i*100- -j])
{
this[i*100- -j].style.top = i*size + "px";
}
}
}
}
}
function init()
{
container = new Container();
container.createBackground();
tetris = new Tetris();
tetris.container = container;
document.onkeydown = function(e)
{
if(isOver) return;
var e = window.event?window.event:e;
switch(e.keyCode)
{
case 38: //up
tetris.rotate();
break;
case 40: //down
tetris.vMove(1);
break;
case 37: //left
tetris.hMove(-1);
break;
case 39: //right
tetris.hMove(1);
break;
}
}
setInterval("if(!isOver) tetris.vMove(1)",500);
}
</script>
</head>
<body onload="init()">
</body>
</html>
