js 俄罗斯方块源码，简单易懂
2017-01-13 15:46 muamaker 阅读(2813) 评论(0) 编辑 收藏 举报1、自己引入jquery
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title></title>
<style type="text/css">
*{
padding: 0;
margin: 0;
}
.box{
width: 400px;
height: 600px;
margin: 20px auto;
border: 5px solid yellowgreen;
}
.row{
height: 20px;
width: 100%;
}
.row div{
width: 18px;
height: 18px;
border: 1px solid transparent;
float: left;
}
.row .active{
background: red;
border: 1px solid #ccc;
}
.row .butte{
background: goldenrod;
border: 1px solid #FF0000;
}
</style>
</head>
<body>
<div class="box">
</div>
</body>
<script type="text/javascript" src="js/jquery.js"></script>
<script type="text/javascript">
var $box = $(".box");
var $row = null;
var $dataArr = [];
var timer = null;
var gameRun = true;
var config = [
[
{x:0, y:4},
{x:1, y:4},
{x:0, y:5},
{x:1, y:5}
],
[
{x:0, y:3},
{x:0, y:4},
{x:0, y:5},
{x:0, y:6}
],
[
{x:0, y:5},
{x:1, y:4},
{x:1, y:5},
{x:2, y:4}
],
[
{x:0, y:4},
{x:1, y:4},
{x:1, y:5},
{x:2, y:5}
],
[
{x:0, y:4},
{x:1, y:4},
{x:1, y:5},
{x:1, y:6}
],
[
{x:0, y:4},
{x:1, y:4},
{x:2, y:4},
{x:2, y:5}
],
[
{x:0, y:5},
{x:1, y:4},
{x:1, y:5},
{x:1, y:6}
]
];
var $bullet = [
{x:0, y:3},
{x:0, y:4},
{x:0, y:5},
{x:0, y:6}
];
var $dowm = [
];
for(var i = 0 ; i < 30; i++){
$box.append("<div class='row'></div>");
var temp = [];
for(var j = 0; j < 20; j++){
$box.find(".row").last().append("<div></div>");
temp.push(0);
}
$dataArr.push(temp);
}
$row = $(".row");
dataTemp();
function dataTemp(){
for(var i = 0; i < 30; i++){
for(var j = 0; j < 20; j++){
if($dataArr[i][j] == 1){
$dataArr[i][j] = 0;
}
}
}
for(var i = 0; i < $bullet.length;i++){
$dataArr[$bullet[i].x][$bullet[i].y] = 1; //正在下落的dom
}
/*for(var i = 0;i< $dowm.length ;i++ ){
$dataArr[$dowm[i].x][$dowm[i].y] = 2; //已经下来的dom
}*/
layout();
};
function layout(){
for(var i = 0; i < 30; i++){
for(var j = 0; j < 20; j++){
if($dataArr[i][j] == 0){
$row.eq(i).find("div").eq(j)[0].className = "";
}else if($dataArr[i][j] == 1){
$row.eq(i).find("div").eq(j)[0].className = "active";
}else if($dataArr[i][j] == 2){
$row.eq(i).find("div").eq(j)[0].className = "butte";
}
}
}
};
$(window).on("keydown", function(event) {
if(gameRun){
switch(event.key) {
case "w":
rotate();
break;
case "s":
moveToDown();
break;
case "a":
leftRight(-1);
break;
case "d":
leftRight(1);
break;
default:
break;
}
}
});
function rotate(){
var tmpBlock = new Array(4);
for(var i=0; i<4; i++){
tmpBlock[i] = {x:0, y:0};
}
//先算四个点的中心点，则这四个点围绕中心旋转90度。
var cx = Math.round(($bullet[0].x + $bullet[1].x + $bullet[2].x + $bullet[3].x)/4);
var cy = Math.round(($bullet[0].y + $bullet[1].y + $bullet[2].y + $bullet[3].y)/4);
//旋转的主要算法. 可以这样分解来理解。
//先假设围绕源点旋转。然后再加上中心点的坐标。
for(var i=0; i<4; i++){
tmpBlock[i].x = cx+cy-$bullet[i].y;
tmpBlock[i].y = cy-cx+$bullet[i].x;
}
if(judegBorder(tmpBlock)){
for(var i=0; i<4; i++){
$bullet[i].x = tmpBlock[i].x;
$bullet[i].y = tmpBlock[i].y;
}
}
dataTemp();
}
function move(x){
for(var i = 0; i < $bullet.length; i++ ){
$bullet[i].x = $bullet[i].x + x;
}
if(! judegBorder($bullet)){
clearInterval(timer);
createSqure();
return;
}
dataTemp();
}
//判断是否越界，越界了，则返回false
function judegBorder(obj){
var flag = true;
for(var i = 0; i < obj.length ; i++){
if(obj[i].x >= 30 || obj[i].x < 0 || obj[i].y >= 20 || obj[i].y < 0){
flag = false;
return false;
}
if($dataArr[obj[i].x][obj[i].y] == 2){
flag = false;
return false;
}
}
return flag;
}
timer=setInterval(function(){
move(1);
},1000);
function createSqure(){
var obj = [];
//记录停下的
for(var i = 0; i < 4; i++){
obj.push({x:$bullet[i].x-1,y:$bullet[i].y});
$dataArr[$bullet[i].x-1][$bullet[i].y] = 2;
}
//消除可以消除的
trimp(obj);
layout();
var randNum =Math.floor(Math.random() * config.length);
//判断是否到顶,没有则添加
for(var i=0; i<4; i++){
if($dataArr[config[randNum][i].x][config[randNum][i].y] == 2){
gameRun = false;
alert("Game Over!");
return;
}
$bullet[i] = {x:config[randNum][i].x, y:config[randNum][i].y};
}
dataTemp();
timer=setInterval(function(){
move(1);
},500);
}
function leftRight(num){
var tmpBlock = new Array(4);
for(var i=0; i<4; i++){
tmpBlock[i] = {x:$bullet[i].x, y:$bullet[i].y};
}
for(var i = 0; i < tmpBlock.length; i++ ){
tmpBlock[i].y = tmpBlock[i].y + num;
}
if(judegBorder(tmpBlock)){
for(var i = 0; i < tmpBlock.length; i++ ){
$bullet[i].y = tmpBlock[i].y;
}
}
dataTemp();
}
function moveToDown(){
var tmpBlock = new Array(4);
for(var i=0; i<4; i++){
tmpBlock[i] = {x:$bullet[i].x, y:$bullet[i].y};
}
for(var i = 0; i < tmpBlock.length; i++ ){
tmpBlock[i].x = tmpBlock[i].x + 1;
}
if(judegBorder(tmpBlock)){
for(var i = 0; i < tmpBlock.length; i++ ){
$bullet[i].x = tmpBlock[i].x;
}
}
dataTemp();
}
function trimp(obj){
for(var i = 0; i < obj.length;i++){
var flag = true;
for(var j = 0; j < 20; j++){
if($dataArr[obj[i].x][j] != 2){
flag = false;
}
}
if(flag){
//需要消除
for(var j = 0; j < 20; j++){
$dataArr[obj[i].x][j] = 0;
}
//下面的被消除，往下掉
for(var x = obj[i].x ; x >= 0 ; x--){
for(var y = 0; y < 20;y++){
if($dataArr[x][y] == 2){
$dataArr[x][y] = 0;
$dataArr[x+1][y] = 2;
}
}
}
i--;
}
}
}
</script>
</html>
