Contoh lengkap pelaksanaan Tetris mudah dalam kemahiran JavaScript

Contoh lengkap pelaksanaan Tetris mudah dalam kemahiran JavaScript_javascript

WBOY

Lepaskan： 2016-05-16 15:12:46

asal

1371 orang telah melayarinya

Contoh dalam artikel ini menerangkan cara melaksanakan Tetris mudah dalam JavaScript. Kongsikan dengan semua orang untuk rujukan anda, butirannya adalah seperti berikut:

Mari kita lihat pemaparan operasi dahulu:

Kod contoh lengkap adalah seperti berikut:

<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>俄罗斯方块</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;}
 .e{top:0px; background:#151515; position:absolute;}
 .g{width:100px; height:20px; color:white; position:absolute;}
</style>
<script type="text/javascript">
var row = 18;
var col = 10;
var announcement = 6;
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;
function createElm(tag,css)
{
 var elm = document.createElement(tag);
 elm.className = css;
 document.body.appendChild(elm);
 return elm;
}
function Tetris(css,x,y,shape)
{
 // 创建4个div用来组合出各种方块
 var myCss = css&#63;css:"c";
 this.divs = [createElm("div",myCss),createElm("div",myCss),createElm("div",myCss),createElm("div",myCss)];
 if(!shape)
 {
  this.divs2 = [createElm("div",myCss),createElm("div",myCss),createElm("div",myCss),createElm("div",myCss)];
  this.score = createElm("div","g");
  this.score.style.top = 10*size+"px";
  this.score.style.left = (col- -1)*size+"px";
  this.score.innerHTML = "score:0";
 }
 this.container = null;
 this.refresh = function()
 {
  this.x = (typeof(x)!='undefined')&#63;x:3;
  this.y = (typeof(y)!='undefined')&#63;y:0;
  // 如果有传参，优先使用参数的，如果有预告，优先使用预告，都没有就自己生成
  if(shape)
   this.shape = shape;
  else if(this.shape2)
   this.shape = this.shape2;
  else
   this.shape = shape&#63;shape:shapes[Math.floor((Math.random()*shapes.length-0.000000001))].split(",");
  this.shape2 = 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();
   this.showScore();
   this.showAnnouncement();
  }
 }
 // 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";
  }
 }
 // 显示预告
 this.showAnnouncement = function()
 {
  for(var i in this.divs2)
  {
   this.divs2[i].style.top = (this.shape2[i*2+1]- -1)*size+"px";
   this.divs2[i].style.left = (this.shape2[i*2]- -1- -col)*size+"px";
  }
 }
 // 显示分数
 this.showScore = function()
 {
  if(this.container && this.score)
  {
   this.score.innerHTML = "score:" + this.container.score;
  }
 }
 // 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()
{
 this.init = function()
 {
  // 绘制方块所在区域
  var bgDiv = createElm("div","f");
  bgDiv.style.width = size*col+"px";
  bgDiv.style.height = size*row+"px";
  // 绘制预告所在区域
  var bgDiv = createElm("div","e");
  bgDiv.style.left = size*col+"px";
  bgDiv.style.width = size*announcement+"px";
  bgDiv.style.height = size*row+"px";
  // 清空积分
  this.score = 0;
 }
 this.check = function(x,y,shape)
 {
  // 检查边界越界
  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()
 {
  var s = 0;
  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)
   {
    s++;
    this.removeLine(m);
   }
  }
  this.score -= -this.calScore(s);
 }
 this.calScore = function(s)
 {
  if(s!=0)
   return s- -this.calScore(s-1)
  else
   return 0;
 }
 // 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.init();
 tetris = new Tetris();
 tetris.container = container;
 document.onkeydown = function(e)
 {
  if(isOver) return;
  var e = window.event&#63;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>

Salin selepas log masuk

Pembaca yang berminat dengan lebih banyak kandungan berkaitan JavaScript boleh menyemak topik khas di tapak ini: "Ringkasan teknik algoritma carian JavaScript", "Ringkasan kesan dan teknik khas animasi JavaScript ", "Ringkasan ralat JavaScript dan teknik penyahpepijatan", "Ringkasan struktur data JavaScript dan teknik algoritma", "Ringkasan algoritma dan teknik traversal JavaScript" dan "Ringkasan Matematik JavaScript penggunaan operasi》

Saya harap artikel ini akan membantu semua orang dalam pengaturcaraan JavaScript.