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snakeeatbean.html
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snakeeatbean.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<link href="favicon.ico" rel="shortcut icon" type="image/x-icon" />
<title>SnakeEatBean</title>
<script>
window.onload=function(){
//生成一个50x50的表格
var tableString = "";
for(var i=0;i<50;i++){
tableString +="<tr>";
for(var j=0;j<50;j++){
tableString +="<td></td>"
}
tableString += "</tr>";
}
var thisTable = document.getElementById("main");
thisTable.innerHTML = tableString;
//注册事件
function addEvent(target,type,handler){
if(target.addEventListener){
target.addEventListener(type,handler,false);
}
else if(target.attachEvent){
target.attachEvent("on" + type,function(event){
return handler.call(target,event);
});
}
else{
target['on' + type] = handler;
}
}
//bean对象
var bean = {
colors:['#d54e21','#f70','#ffc414','#78a300','#0e76a8','#6a5a8c'], //豆子的颜色
//产生豆子
createBean:function(){
while(true){
var x = Math.floor(Math.random()*50),
y = Math.floor(Math.random()*50),
colorIndex = Math.floor(Math.random()*6);
if(!Snake.isCellFilled(x,y)){
thisTable.rows[y].cells[x].style.backgroundColor = this.colors[colorIndex];
break;
}
}
},
}
//Snake对象
var Snake = {
body:[{x:25,y:25}],//每一节身体都用{x:x,y:y}表示
direction:0,//移动方向 0，1，2，3 分别表示 上，右，下，左
directionBuffer:[], //方向缓存数组
speed:125, //当前速度
allSpeed:{ // 三种不同的速度
slow:200,
middle:125,
fast:75,
},
colorNow:'#666', //现在蛇的颜色
timer:null, //把定时器加到这里，消除的时候用
runFlag:true, //是否在运行
initFlag:false, //是否已经初始化
aliveFlag:true, //是否还活着
startFlag:false, //是否已经开始
//初始化蛇
init:function(){
this.direction = Math.floor(Math.random()*4);
thisTable.rows[25].cells[25].style.backgroundColor = "#666";
for(var i=0;i<3;i++){
bean.createBean();
}
addEvent(document,"keydown",Snake.moveSwitch);
this.move();
this.initFlag = true;
},
//变换方向
moveSwitch:function(event){
var code = event.keyCode;
switch(code){
case 65://左
case 37:{
Snake.directionBuffer.push(3);
break;
}
case 87://上
case 38:{
Snake.directionBuffer.push(0);
break;
}
case 68://右
case 39:{
Snake.directionBuffer.push(1);
break;
}
case 83://下
case 40:{
Snake.directionBuffer.push(2);
break;
}
case 32:{//暂停
Snake.suspend();
break;
}
}
},
//确定方向
confirmDirection:function(){
var directionWill;
if(this.directionBuffer.length === 0){
;
}
else{
directionWill = this.directionBuffer.shift();
if(Math.abs(directionWill-this.direction) === 2){
;
}
else{
this.direction = directionWill;
}
}
},
//移动功能
move: function(){
this.timer = setInterval(function(){
Snake.confirmDirection();
var nextPod = Snake.getNextPos(),
x = nextPod.x,
y = nextPod.y,
check = Snake.checkNextStep();
if(check === -1){ //死亡
clearInterval(Snake.timer);
document.getElementById("game_over_blank").style.display = "block";
Snake.aliveFlag = false;
}
else if(check === 1){ //前面有豆子
Snake.addNode(x,y);
Snake.colorNow = thisTable.rows[y].cells[x].style.backgroundColor;
Snake.eraseNode();
Snake.paintAllNode();
bean.createBean();
Score.addScore();
}
else{ //正常行进
Snake.addNode(x,y);
Snake.eraseNode();
Snake.popNode();
Snake.paintNode(x,y);
}
}, this.speed);
},
//暂停功能
suspend:function(){
if(Snake.aliveFlag){
if (this.runFlag) {
clearInterval(this.timer);
this.runFlag = false;
document.getElementById("suspend_blank").style.display = "block";
}
else{
document.getElementById("suspend_blank").style.display = "none";
this.move();
this.runFlag = true;
}
}
},
//蛇头前添加节点
addNode:function(x,y){
this.body.unshift({x:x,y:y});
},
//抛弃蛇尾巴
popNode:function(){
this.body.pop();
},
//擦除最后一个节点
eraseNode: function(){
var bodylength = this.body.length,
node_y = this.body[bodylength-1].y,
node_x = this.body[bodylength-1].x;
thisTable.rows[node_y].cells[node_x].style.backgroundColor = "";
},
//绘制新节点
paintNode: function(x,y){
thisTable.rows[y].cells[x].style.backgroundColor = this.colorNow;
},
//变颜色
paintAllNode:function(){
for (x in this.body){
this.paintNode(this.body[x].x,this.body[x].y);
}
},
//检测一个格子是不是被填充
isCellFilled:function(x,y){
if(thisTable.rows[y].cells[x].style.backgroundColor == ""){
return false;
}
return true;
},
//检查下一步状态
checkNextStep: function(){
var nextPod = this.getNextPos();
var x = nextPod.x;
var y = nextPod.y;
if(x<0||x>49||y<0||y>49){
return -1;
}
for(i in this.body){
if(this.body[i].x==x&&this.body[i].y==y){
return -1;
}
}
if(this.isCellFilled(x,y)){
return 1;
}
return 0;
},
//得到将要到达的位置
getNextPos: function(){
var x = this.body[0].x;
var y = this.body[0].y;
if(this.direction==0){
y--;
}
else if(this.direction==1){
x++;
}
else if(this.direction==2){
y++;
}
else{
x--;
}
return {x:x,y:y};
}
}
//计分系统
var theScore = document.getElementById("score");
var Score = {
score:0,
addScore:function(){
this.score+=1;
theScore.innerHTML = "分数: "+this.score;
}
}
//开始按钮以及功能
var start_button = document.getElementById("start_button");
addEvent(start_button,"click",function(){
if(Snake.startFlag){
;
}else{
Snake.init();
Snake.startFlag = true;
}
});
//速度系统
var speed_all = document.querySelectorAll("#speed_radio li"),
speed_all_length = speed_all.length;
for(var i = speed_all_length-1 ; i>=0 ; i--){
addEvent(speed_all[i],"click",switchSpeed);
}
function switchSpeed(event){
for(var i = 0;i<speed_all_length;i++){
if(speed_all[i].className==="selected"){
speed_all[i].className = "";
}
}
Snake.speed = Snake.allSpeed[event.target.id]
if(Snake.initFlag === false){
;
}
else{
if(Snake.runFlag === true){
clearInterval(Snake.timer);
Snake.move();
}
else{
clearInterval(Snake.timer);
}
}
event.target.className = "selected";
}
//死亡时候出现的div，离开和再试一次功能
var leave_game = document.getElementById("leave_game"),
retry_game = document.getElementById("retry_game");
addEvent(leave_game,"click",leaveGameFun);
addEvent(retry_game,"click",retryGameFun);
function leaveGameFun(){
window.open('','_self');
window.close();
}
function retryGameFun(){
window.location.reload();
}
}
</script>
<style>
#wrapper{
width:500px;
margin:10px auto;
}
#content{
position: relative;
margin-top:10px;
width:500px;
}
table{
margin: 0px;
width: 500px;
height: 500px;
border-collapse: collapse;
border: solid #777 1px;
}
td{
height: 10px;
width: 10px;
padding: 0px;
margin: 0px;
border:0px;
}
#score_blank{
overflow: hidden;
}
#score{
font-size: 20px;
float: left;
}
#start_button{
float: right;
height:30px;
width: 60px;
border:none;
color:white;
background-color: #3A8000;
}
#speed_radio{
float: right;
height: 30px;
width: 130px;
}
ul{
overflow: hidden;
list-style: none;
width: 100%;
margin: 0;
padding: 0;
}
li{
float: left;
margin:2px 5px 0 0;
padding: 2px;
color:white;
}
#start_button:hover{
background-color: #3A9000;
}
#footer{
padding: 5px;
font-size: 12px;
color: #666;
}
#footer a{
text-decoration: none;
color: #666;
}
#footer a:hover{
text-decoration: underline;
color: #666;
}
#slow{
background-color: #fc0;
}
#slow:hover{
background-color: #fd0;
}
#middle{
background-color: #f70;
}
#middle:hover{
background-color: #f80;
}
#fast{
background-color: #d54e21;
}
#fast:hover{
background-color: #d55f21;
}
.selected{
margin:-2px 5px 0 0;
padding:2px 2px 6px 2px;
}
#game_over_blank{
display: none;
position:absolute;
z-index: 1;
width:200px;
height:100px;
top:200px;
left:50%;
margin-left: -100px;
text-align: center;
border: solid #777 1px;
background-color: white;
text-align: center;
}
#game_over_blank p{
margin:5px;
}
#retry_game{
position:absolute;
height:30px;
width: 70px;
top:35px;
left:20px;
margin: 0px;
border:none;
color:white;
background-color: #1b7e5a;
}
#retry_game:hover{
background-color: #78a300;
}
#leave_game{
position:absolute;
height:30px;
width: 70px;
top:35px;
left:110px;
margin: 0px;
border:none;
color:white;
background-color: #d54e21;
}
#leave_game:hover{
background-color: #e56c69;
}
#suspend_blank{
display: none;
position:absolute;
z-index: 1;
width:200px;
height:100px;
top:200px;
left:50%;
margin-left: -100px;
text-align: center;
border: solid #777 1px;
background-color: white;
text-align: center;
}
#suspend_blank p{
margin:15px 0px;
}
</style>
</head>
<body>
<div id = "wrapper">
<div id = "score_blank">
<div id="score">分数：0</div>
<button id="start_button">开始</button>
<div id="speed_radio">
<ul>
<li id="slow" class="">慢</li>
<li id="middle" class="selected">中</li>
<li id="fast" class="">快</li>
</ul>
</div>
</div>
<div id = "content">
<div id = "game_over_blank">
<p>游戏结束</p>
<button id = "retry_game">再试一次</button>
<button id = "leave_game">离开游戏</button>
</div>
<div id = "suspend_blank">
<p>暂停</p>
<p>按下空格继续</p>
</div>
<table id="main"></table>
</div>
<div id = "footer">
<p>点击开始按钮开始游戏，上下左右或wsad键控制小蛇，按空格暂停/继续</p>
<p>吃掉五颜六色的豆子得分,并且蛇的身体会变成豆子的颜色</p>
<p>点击上方的速度按钮可以选择速度</p>
<p>撞到墙和自己会死</p>
<a href="http://weibo.com/zyxcomeon">点此到我的微博</a>
</div>
</div>
</body>
</html>