圣诞节向圣诞树上发射礼物小游戏代码-html代码-BFW代码库

代码语言：html

所属分类：游戏

代码描述：圣诞节向圣诞树上发射礼物小游戏代码

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>
canvas {
    position: absolute;
    border: 1px solid rgb(80, 180, 255);
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    border-radius: 10px;
}
#canvasSnowBackground {
    background: rgb(80, 180, 255);
}
button{
	font-size:large;
	font-family:Arial;
	color: white;
	background: white;
	cursor:pointer;
  padding: 0px 30px;
  border-radius: 10px;
  border: 1px solid rgba(80,180,255,0);
  background: rgb(80, 180, 255);
  transition: 0.3s;
  justify-content: space-between;
}
button:hover {
  background: rgb(255, 255, 255);
  color: rgb(80, 180, 255);
   border: 1px solid rgba(80,180,255,1);
}
#overlay{
	text-align:center;
	font-size:x-large;
	position: absolute;
	left: 50%;
	top: calc(50% + 340px);
	transform: translate(-50%, -50%);
	justify-content: space-between;
  width: 480px;
}
#overlay > button, #overlay > span {
  justify-content: space-between;
}
#overlay > span {
  line-height: 50px;
  font-size: 20px;
	font-family:Arial;
}
</style>


</head>
<body onload="main()">
    <canvas id="canvasSnowBackground"></canvas>
    <canvas id="canvasTreeBranches"></canvas>
    <canvas id="canvasSnowForeground"></canvas>
    <canvas id="canvasGame"></canvas>



  
      <script >
var G = [0, 0.8];
var particles = [];
var segments = [];
var boards = [];

function scale(vector, value) {
  let newVector = [];
  for (let i = 0; i < vector.length; i++) {
    newVector[i] = vector[i] * value;
  }
  return newVector;
}

function distance(v1, v2) {
  let dist = 0;
  for (let i = 0; i < v1.length; i++) {
    dist += Math.pow(v1[i] - v2[i], 2);
  }
  return Math.sqrt(dist);
}

function createHangingBoards(topLeft, size, str) {

  for (let i = 0; i < str.length; i++) {
    let x = topLeft[0] + size * 3.5 * i;
    let y = topLeft[1];
    console.log(x, y);
    if (str.charAt(i) == " ") {
      continue;
    }
    let board = createHangingBoard(
    [x, y],
    size,
    str.charAt(i));

    particles.add(board.p);
    segments.add(board.s);
    boards.add(board.b);
  }

}

function createHangingBoard(location, size, letter) {
  let links = 8;
  let p = [];
  let s = [];
  let b = [];
  let angle = 0.2;
  //support
  for (let i = 0; i < links; i++) {
    let isFixed = true;
    if (i > 0) {
      isFixed = false;
    }
    p.push(new Particle([location[0] - size + i * size * 0.6, location[1]], isFixed));
    p.push(new Particle([location[0] + size + i * size * 0.6, location[1]], isFixed));
    if (i > 0) {
      s.push(new Segment(p[p.length - 1], p[p.length - 3]));
      s.push(new Segment(p[p.length - 2], p[p.length - 4]));
    }
  }
  p.push(new Particle([location[0] - size + (links - 1) * size * 0.6, location[1] + 4 * size * 0.6], false));
  p.push(new Particle([location[0] + size + (links - 1) * size * 0.6, location[1] + 4 * size * 0.6], false));
  s.push(new Segment(p[p.length - 1], p[p.length - 2], true));
  s.push(new Segment(p[p.length - 4], p[p.length - 3], true));
  s.push(new Segment(p[p.length - 1], p[p.length - 3], true));
  s.push(new Segment(p[p.length - 2], p[p.length - 4], true));
  s.push(new Segment(p[p.length - 1], p[p.length - 4], true));
  b.push(new Board([
  p[p.length - 1], p[p.length - 2], p[p.length - 4], p[p.length - 3]],
  letter));



  return { p: p, s: s, b: b };
}

Array.prototype.add = function (elements) {
  for (let i = 0; i < elements.length; i++) {
    this.push(elements[i]);
  }
};

class Board {
  constructor(particles, letter) {
    this.particles = particles;
    this.letter = letter;
  }

  draw(ctx) {
    ctx.beginPath();
    ctx.fillStyle = "white";
    ctx.moveTo(...this.particles[0].location);
    for (let i = 1; i < this.particles.length; i++) {
      ctx.lineTo(...this.particles[i].location);
    }
    ctx.fill();
    let ce.........完整代码请登录后点击上方下载按钮下载查看