canvas实现好玩的粒子喷射器小球交互效果代码-html代码-BFW代码库

代码语言：html

所属分类：粒子

代码描述：canvas实现好玩的粒子喷射器小球交互效果代码，鼠标移动控制粒子发射方向，单击发射。

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>
:root {
  background: #202126;
  --c: #fff;
}

html, body {
  height: 100vh;
  margin: 0;
  overflow: hidden;
}

.player {
  --t: 1;
  position: absolute;
  top: 0;
  left: 0;
  width: 5vmin;
  height: 5vmin;
  border-radius: 50%;
  box-shadow: 0 0 0 0.5vmin var(--c);
  transform: translate(-50%, -50%) translate(var(--x, 0), var(--y, 0)) rotate(var(--r, 0deg)) scaleY(calc(0 + var(--t))) scaleX(calc(2 - var(--t)));
  background: #202126;
  z-index: 10;
  will-change: transform;
}

.player::after {
  content: "";
  position: absolute;
  width: 15%;
  height: 15%;
  background: #202126;
  box-shadow: 0 0 0 0.4vmin #fff;
  left: 50%;
  top: 0;
  transform: translate(-50%, calc(-50% - 0.2vmin)) rotate(-45deg);
}

.player::before {
  content: "";
  position: absolute;
  inset: 0;
  background: lch(110 80 var(--ch));
  border-radius: 50%;
  -webkit-clip-path: inset(50% 0 0 0);
          clip-path: inset(50% 0 0 0);
  transform: rotate(calc(-1 * var(--r, 0deg)));
  transition: 200ms transform;
  box-shadow: inset 0 0 0 0.1vmin;
}

.shooting .player {
  -webkit-animation: float 0.1s infinite alternate ease-in-out;
          animation: float 0.1s infinite alternate ease-in-out;
}

@-webkit-keyframes float {
  0% {
    --t: 0.75;
  }
  100% {
    --t: 1;
  }
}

@keyframes float {
  0% {
    --t: 0.75;
  }
  100% {
    --t: 1;
  }
}
.projectile {
  position: absolute;
  top: 0;
  left: 0;
  width: 1vmin;
  height: 3vmin;
  border-radius: 50%;
  background: var(--c);
  transform: translate(-50%, -50%) translate(var(--x, 0), var(--y, 0)) rotate(var(--r, 0deg)) scaleY(calc(0.5 + var(--rnd) * 1.5));
  will-change: transform;
}

.particle {
  position: absolute;
  top: 0;
  left: 0;
  width: 0.5vmin;
  height: 0.5vmin;
  border-radius: 50%;
  background: var(--c);
  will-change: transform;
  transform: translate(-50%, -50%) translate(var(--x, 0), var(--y, 0)) rotate(var(--r, 0deg)) scale(calc(0.5 + var(--rnd) * 4.5));
}

.score {
  position: fixed;
  top: 20px;
  right: 20px;
  color: white;
  font-family: monospace;
  font-size: 24px;
}
</style>



  
  
</head>

<body translate="no">
  <!--div class="score">Score: <span id="scoreValue">0</span></div-->
  
      <script  >
// Disclamer: doing this with CSS is stupid. But its what I do best: stupid things and CSS
class GameObject {
  constructor({
    x = 0,
    y = 0,
    rotation = 0,
    className = 'gameObject',
    scale = 1,
    parent = document.body,
    color = '#fff' })
  {
    this.element = document.createElement('div');
    this.element.classList.add(className);
    parent.appendChild(this.element);

    this.position = { x, y };
    this.velocity = { x: 0, y: 0 };
    this.rotation = rotation;
    this.scale = scale;
    this.color = color;
    this.random = Math.random();
  }

  update() {
    // Apply velocity with drag
    this.velocity.x *= 0.98;
    this.velocity.y *= 0.98;

    this.position.x += this.velocity.x;
    this.position.y += this.velocity.y;

    // Bounce off walls
    if (this.position.x < 0) {
      this.position.x = 0;
      this.velocity.x *= -0.5;
    }
    if (this.position.x > window.innerWidth) {
      this.position.x = window.innerWidth;
      this.velocity.x *= -0.5;
    }
    if (this.position.y < 0) {
      this.position.y = 0;
      this.velocity.y *= -0.5;
    }
    if (this.position.y > window.innerHeight) {
      this.position.y = window.innerHeight;
      this.velocity.y *= -0.5;
    }

    this.element.style.setProperty('--x', `${this.position.x}px`);
    this.element.style.setProperty('--y', `${this.position.y}px`);
    this.element.style.setProperty('--r', `${this.rotation}deg`);
    this.element.style.setProperty('--c', this.color);
    this.element.style.setProperty('--rnd', this.random);
  }

  destroy() {
    this.element.remove();
  }

  getDistance(x, y) {
    const dx = this.position.x - x;
    const dy = this.position.y - y;
    return Math.sqrt(dx * dx + dy * dy);
  }}


class Player extends GameObject {
  constructor(config) {
    super({ ...config, className: 'player' });
    this.score = 0;
    //this.scoreElement = document.getElementById('scoreValue');
  }

  lookAt(x, y) {
    const dx = x - this.position.x;
    const dy = y - this.position.y;
  .........完整代码请登录后点击上方下载按钮下载查看