<!DOCTYPE html>
<html>
<head lang="en">
<meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no">
<meta charset="UTF-8">
<title>打地鼠</title>
<style type="text/css">
*{
padding: 0;
margin: 0;
}
body{
text-align: center;
background-color: cornsilk;
overflow: hidden;
}
h1{
font-size: 40px;
margin-top: 50px;
}
h2{
margin-top:20px;
}
img,.active{
position: absolute;
width: 33.33%;
max-width: 300px;
max-height: 300px;
transform: scale(0);
-webkit-transform: scale(0);
transition: all .4s ease-out;
-webkit-transition: all .4s ease-out;/*动画*/
}
.active{
transform: scale(1);
-webkit-transform: scale(1);
}
canvas,div{
position: absolute;
left: 50%;
width: 72%;
height: auto;
max-width: 1000px;
max-height: 1000px;
transform: translate(-50%,0%);
-webkit-transform: translate(-50%,0%);/*居中*/
margin-top: 50px;
}
div{z-index: 1;}
#temp{
position: fixed;
top: 200%;
left: 200%;
transform: scale(0.1);
-webkit-transform: scale(0.1);
}
</style>
</head>
<body>
<h1>打地鼠</h1>
<h2>得分:0</h2>
<h2>剩余机会:3</h2>
<div class="diShu">
</div>
<canvas>对不起。。。</canvas>
<img id="temp" src="ds.png">
</body>
<script>
var canvas = document.getElementsByTagName("canvas")[0];
canvas.width = 1000;
canvas.height = 1000;
var cubes = 3;
var ctx = canvas.getContext("2d");
ctx.fillStyle = "#d9bf9a";
var areaSize = 1000/cubes;
var cubeSize = areaSize*0.96;
ctx.translate(areaSize*0.02,areaSize*0.02);
var rats = [];
var points;
var hp;
var interval;
var t,t2;
window.onload = function(){
drawPannel();//游戏中的方格是用canvas画的
initGame();//初始化游戏
};
function initGame(){
points = 0;
hp = 3;
interval = 100;
document.getElementsByTagName("h2")[0].innerHTML = "得分:"+points;
document.getElementsByTagName("h2")[1].innerHTML = "剩余机会:"+hp;
t = setInterval(function(){
generateRats();//产生地鼠的方法
maintanceRats();//维护地鼠的方法
},interval);
}
function drawPannel(){//画出方格，每个方格放一个地鼠并且隐藏
for(var i=0;i<cubes;i++){
for(var j=0;j<cubes;j++){
ctx.fillRect(i*areaSize,j*areaSize,cubeSize,cubeSize);//画一个方格
var img = new Image();
img.src = "ds.png";
img.style.left = i*33.33 + "%";
img.style.top = j*0.3333*canvas.clientHeight + "px";
img.addEventListener("mousedown",clicked);//两种事件是为了适配不同的移动设备
img.addEventListener('touchstart', touched);
document.getElementsByTagName("div")[0].appendChild(img);//每个方格放地鼠
rats.push(img);//地鼠放入队列中，用于后面维护
}
}
}
function touched(){//触摸中了
chosen(this);
//var touch = event.touches[0];
//var rect = canvas.getBoundingClientRect();
//checkArea(touch.pageX - rect.left,touch.pageY - rect.top);
}
function clicked(){//点击中了
chosen(this);
//var rect = canvas.getBoundingClientRect();
//checkArea(event.clientX - rect.left,event.clientY - rect.top);
}
function chosen(rat){
if(rat.className == "active"){//如果地鼠显示出来了
rat.classList.remove("active");//隐藏
points ++;//加分
document.getElementsByTagName("h2")[0].innerHTML = "得分:"+points;//更新分数显示
interval -= interval*0.03>2?interval*0.03:interval*0.015;//增加游戏难度
}
}
function checkArea(x,y){//检测是否点中的方法，方法已经被替代，可以删除
x = Math.ceil(x/(canvas.clientWidth/3)) - 1;
y = Math.ceil(y/(canvas.clientHeight/3)) - 1;
console.log("点击坐标 x:"+x+",y:"+y);
if(rats[x*3+y].className == "active"){
rats[x*3+y].classList.remove("active");
points ++;
document.getElementsByTagName("h2")[0].innerHTML = "得分:"+points;
interval -= interval*0.03>2?interval*0.03:interval*0.015;
}
}
function generateRats(){//产生地鼠的方法
if(parseInt(Math.random()*100)%parseInt(((interval/12)>2?(interval/12):2))==0){//产生的几率越来越大
var ID = Math.ceil(Math.random()*8);
if(rats[ID].className == ""){//如果没有出现
t2 = setTimeout(function(){//出现
rats[ID].classList.add("active");
rats[ID].id = interval/4;//用id表示地鼠自动消失的时间，和游戏难度相关
},500);
}
}
}
function maintanceRats(){//维护地鼠的方法
var activeRats = document.getElementsByClassName("active");//获取所有出现的地鼠
for(var i=0;i<activeRats.length;i++){//用id表示剩余时间
activeRats[i].id --;
if(activeRats[i].id<0){//如果到时间了
activeRats[i].classList.remove("active");//当前地鼠隐藏
hp --;//掉血
interval *= 1.08;//回退一点游戏难度
document.getElementsByTagName("h2")[1].innerHTML = "剩余机会:"+hp;//更新血量显示
if(hp == 0){
lose();
}
}
}
}
function lose(){//如果输了
clearInterval(t);//停止计时器，等待游戏重新开始
clearTimeout(t2);
setTimeout(function(){//延时一点
alert("您输了，共打了"+points+"只地鼠。");
for(var i=0;i<rats.length;i++){
rats[i].classList.remove("active");//全部地鼠隐藏
}
setTimeout(function(){
initGame();//重新开始游戏
},500);//延时，等待地鼠隐藏的动画效果结束
},10);
}
</script>
</html>
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