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dino.html
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<!DOCTYPE html>
<html>
<head>
<title></title>
<style type="text/css">
.box {
position: relative;
height: 300px;
width: 100%;
border:1px solid #000;
}
.dino {
position: absolute;
bottom: 0;
left: 0;
height: 100px;
z-index: 2;
}
.jump {
animation: jump;
animation-timing-function: cubic-bezier(0, 0.17, 1, 0.85);
}
@keyframes jump {
0% {bottom: 0px;}
50% {bottom: 100px;}
100% {bottom: 0px;}
}
.tree {
position: absolute;
right: -100px;
bottom: 0;
width: 100px;
height: 60px;
}
.move {
animation: move 2.5s linear;
}
@keyframes move {
0% {right: 1px;}
100% {right: 100%;}
}
</style>
</head>
<body>
<div class="box">
<img class="dino jump" src="./dino.png" width="100" />
<img class="tree" src="./tree.png" />
</div>
<script type="text/javascript">
let startTime = 0; //开始时间
let jumpDuration = 1000; //间隔时间
let timer;
let dino = document.getElementsByClassName('dino')[0];
dino.style.animationDuration = jumpDuration / 1000 + 's';
document.body.onkeyup = function(e) {
if(e.keyCode != 32) {
return;
}
let currentTime = Date.now();
if(currentTime - startTime >= jumpDuration){
dino.classList.add('jump');
// setTimeout(()=>{
// console.log(dino.offsetTop)
// if(dino.offsetTop > 240){
// alert('游戏结束');
// }
// }, 700);
// setTimeout(()=>{
// console.log(dino.offsetTop)
// if(dino.offsetTop > 240){
// alert('游戏结束');
// }
// }, 800);
// setTimeout(()=>{
// console.log(dino.offsetTop)
// if(dino.offsetTop > 240){
// alert('游戏结束');
// }
// }, 900);
timer = setTimeout(function(){
dino.classList.remove('jump');
clearTimeout(timer);
timer = null;
}, jumpDuration);
startTime = currentTime;
}
}
treeMove();
let move = setInterval(treeMove, 3000);
function treeMove() {
let tree = document.getElementsByClassName('tree')[0];
tree.classList.add('move');
setTimeout(()=>{
console.log(tree.offsetLeft)
if(dino.offsetTop > 150){
alert('游戏结束');
}
}, 2200);
//清除动画
let timer = setTimeout(function(){
tree.classList.remove('move');
clearTimeout(timer);
timer = null;
}, 2500);
}
</script>
</body>
</html>