css+js实现拯救地球射击游戏代码-html代码-BFW代码库

代码语言：html

所属分类：游戏

代码描述：css+js实现拯救地球射击游戏代码

下面为部分代码预览，完整代码请点击下载或在bfwstudio webide中打开


<!DOCTYPE html>
<html lang="en" >

<head>

  <meta charset="UTF-8">
  

  
  
<style>
html {
  background: #222;
  min-height: 100vh;
  display: grid;
  place-items: center;
  cursor: crosshair;
}
body {
  inset: 0;
  display: grid;
  place-items: center;
  overflow: hidden;  
}

.star {
  width: 2px;
  height: 2px;
  background: white;
  position: absolute;
  z-index: -1;  
  pointer-events: none;
}

.screen_shake {
  --shake-amount: 5px;
  animation: screen_shake .25s linear forwards;
}
@keyframes screen_shake {
  20% { margin-left: var(--shake-amount); }
  40% { margin-left: calc(-1*var(--shake-amount)); }
  60% { margin-left: var(--shake-amount); }
  80% { margin-left: calc(-1*var(--shake-amount)); }
  100% { margin-left: var(--shake-amount); }
}

* {
  user-select: none;
}

#ship {
  width: 15vmax;
  aspect-ratio: 1/1;
  position: absolute;
  transform-origin: 50% 50%;  
  z-index: 9999;
  border-radius: 50%;
}
#ship:before {
  content: '';
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(circle at 0% 50%, MediumSeaGreen 25%, transparent 25%),
    radial-gradient(circle at 80% 30%, MediumSeaGreen 25%, transparent 25%),
    radial-gradient(circle at 110% 60%, MediumSeaGreen 25%, transparent 25%),
    radial-gradient(circle at 50% 125%, white 25%, transparent 25%)
    deepskyblue;  
  border-radius: 50%;
  transform-origin: 50% 50%;  
  transform: var(--anti-spin);
  z-index: -1;
}
#ship:after {
  content: '';
  position: absolute;
  left: 2.5vmax;
  top: -5vmax;
  width: 10vmax;
  height: 5vmax;
  background: white;
  clip-path: polygon(50% 0%, 100% 100%, 70% 70%, 30% 70%, 0% 100%);
}

#bullet_point {
  position: absolute;
  width: 1px;
  aspect-ratio: 1/1;
  left: 50%;
  top: -4vmax;
}

#hits {
  width: 100%;
  text-align: center;
  z-index: 100;
  position: absolute;
  left: 0;
  top: 45%;
  pointer-events: none;
}
#kills_counter {
  position: absolute;
  left: 0;
  top: -3.5vmax;
  z-index: 100;
  width: 100%;
  text-align: center;
  pointer-events: none;
}

.bullet {
  width: 16px;
  height: 16px;
  background-color: white;
  position: absolute;
  left: -8px;
  border-radius: 50%;
  transform-origin: 50% 8px;
  transform: translate(-50%,-50%);
  pointer-events: none; 
  outline-offset: 5px;
  outline: 1px solid red;
}

.asteroid {
  width: 50px;
  height: 50px;
  box-sizing: border-box;
  border: 2px solid white;
  background: #222;
  position: absolute;
  top: 25%;
  left: 25%;
  animation: roll 3s linear infinite;
  z-index: -1;
/*   pointer-events: none; */
}
@keyframes roll {
  100% { transform: rotate(360deg); }
}

.explode {
  animation-play-state: paused;
  pointer-events:none;
  border: 2px solid transparent;
  background: 
    radial-gradient(circle at 50% 50%, white 3px, transparent 3px),
    radial-gradient(circle at 30% 53%, white 3px, transparent 3px),
    radial-gradient(circle at 90% 60%, white 3px, transparent 3px),
    radial-gradient(circle at 25% 28%, white 3px, transparent 3px),
    radial-gradient(circle at 23% 75%, white 3px, transparent 3px),
    radial-gradient(circle at 72% 25%, white 3px, transparent 3px),
    radial-gradient(circle at 75% 77%, white 3px, transparent 3px);
  animation: explode .25s linear forwards;
  z-index: 999999;
}
@keyframes explode {
  100% { transform: scale(2); opacity: 0; }
}
</style>



</head>

<body >
  <div id='ship' class='earth'>
  <div id='bullet_point'></div>
  <div id='hits'></div>
  <div id='kills_counter'></div>
</div>

  
      <script >
setTimeout(function () {
  var mousePos = {},
  shipPos = { x: window.innerWidth * .5, y: window.innerHeight * .5 },
  vector = {},
  angle,
  b_speed = 10,
  ast_speed = 1,
  kills = 0,
  impacts = 0,
  planet_life = 100,
  ast_attack_damage = 10;

  function screenShake() {
    document.body.classList.add('screen_shake');
    document.body.onanimationend = function () {
      this.classList.remove('screen_shake');
    };
  }

  function rotateShip(e) {
    mousePos = { x: e.clientX, y: e.clientY };
    vector = { x: mousePos.x - shipPos.x, y: mousePos.y - shipPos.y };
    angle = Math.atan2(vector.y, vector.x) * (180 / Math.PI) + 90;
    ship.style.transform = 'rotate(' + angle + 'deg)'.........完整代码请登录后点击上方下载按钮下载查看