canvas实现在手机上两人对战的打球小游戏代码-html代码-BFW代码库

代码语言：html

所属分类：游戏

代码描述：canvas实现在手机上两人对战的打球小游戏代码，设计用于触摸屏幕，在场地上滑动/甩动球，先达到5分获胜，点击游戏区域在赢得比赛后重置，两个人一起玩更有趣。

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">
  
    <meta name="viewport" content="width=device-width,initial-scale=1.0,maximum=1.0,minimum=1.0,user-scalable=0" />

  
  
<style>
@import url('https://fonts.googleapis.com/css2?family=Silkscreen&display=swap');

html {
  background: #222;
  min-height: 100vh;
  display: grid;
  place-items: center;
  overflow: hidden;
  font-family: system-ui;
  perspective: 50vw;
}

body {
  margin: 0;
/*   transform: rotateX(10deg) translateY(-5%); */
}

* {
  box-sizing: border-box;
  user-select: none;
}

p {
  position: fixed;
  left: 0;
  top:0;
  color: gray;
  padding: 1rem;
  margin: 0;
}

#gameCanvas {
  background: 
    url('//repo.bfw.wiki/bfwrepo/image/64c8657304d19.png'),
    SandyBrown;
  background-size: cover;
  box-sizing: border-box;
  position: relative;
}
#gamebox {
  width: fit-content;
  position: relative;
  
}

/* #gamebox:after {
  content: '';
  position: absolute;
  inset: 0px;
  border: peru 20px solid;
  box-shadow: 
    inset 0 0 0 5px rgba(0,0,0,.1);
  pointer-events: none;
} */

#scoreboard {
  position: absolute;
  left: 0;
  top: 0;
  inset: 0;
  background: rgba(0,0,0,.4);
  backdrop-filter: blur(10px);
  display: grid;
  place-items: center;
  opacity: 0;
  pointer-events: none;
}

.show_sb {
  pointer-events: all !important;
  animation: show_sb 2s linear forwards;
}
@keyframes show_sb {
  25% { opacity: 1; }
  75% { opacity: 1; }
  100% { opacity: 0; }
}

.gameOver {
  pointer-events: all !important;
  animation: gameOver .5s linear forwards;
}
@keyframes gameOver {
  100% { opacity: 1; }
}

.pl {
  border-top: 10px solid #333;
  border-right: 10px solid #333;
  border-bottom: 10px solid #222;
  border-left: 10px solid #222;
  background: black;
  min-width: 175px;
  aspect-ratio: 1/1;
  font-size: 10rem;
  line-height: 100%;
  padding: 0 1rem 1.25rem 1rem;
  font-family: 'Silkscreen';
  color: white;
  text-align: center;
}

.scored {
  background: LimeGreen !important;
}

.winner {
  background: gold !important;
}
</style>


  
</head>

<body>
  <p> 
  设计用于触摸屏幕<br>
在场地上滑动/甩动球<br>
先达到5分获胜<br>
点击游戏区域在赢得比赛后重置<br>
两个人一起玩更有趣

</p>
<!--  -->

<div id="gamebox">
  <canvas id="gameCanvas"></canvas>
  <div id="scoreboard">
    <div id="pl_one" class='pl'>0</div>
    <div id="pl_two" class="pl">0</div>
  </div>
</div>

  
      <script  >
const canvas = document.getElementById('gameCanvas');
canvas.setAttribute("height", window.innerHeight * .97);
canvas.setAttribute("width", window.innerHeight * .97 * .5625);
const ctx = canvas.getContext('2d');
const ballRadius = 20;
const friction = 0.96; // Friction coefficient (less than 1 to slow down ball)
const maxSwipeLength = 100;
let cooldownTime = 1000;
let ballXStart = canvas.width * .5;
let ballYStart = canvas.height * .75;
let ballX = ballXStart;
let ballY = ballYStart;
let ballSpeedX = 0;
let ballSpeedY = 0;
let isSwiping = false;
let swipeStartX = 0;
let swipeStartY = 0;
let swipEndX = 0;
let swipeEndY = 0;
let cooldownTimer = null;
let ob_size = 10;
let ballRotation = 0;

// alert('Designed for mobile devices using touch. Sorry.')

const obstacles = [
{ x: canvas.width * .5, y: canvas.height * .5, radius: ob_size },
{ x: canvas.width * .25, y: canvas.height * .25, radius: ob_size },
{ x: canvas.width * .75, y: canvas.height * .25, radius: ob_size },
{ x: canvas.width * .25, y: canvas.height * .75, radius: ob_size },
{ x: canvas.width * .75, y: canvas.height * .75, radius: ob_size }];


const topGoal = { x: canvas.width * .5, y: 15, radius: 30 };
const bottomGoal = { x: canvas.width * .5, y: canvas.height - 10, radius: 30 };

function updateGameArea() {
  clearCanvas();
  drawGoals();
  drawObstacles();
  moveBall();
  drawBall();
  bounceOffWalls();
  checkCollisionWithObstacles();
  applyFriction();
  checkCollisionWithGoals();
}

function clearCanvas() {
  ctx.clearRect(0, 0, canvas.width, canvas.height);
}

function drawGoals() {
  ctx.fillStyle = 'transparent';
  ctx.beginPath();
  ctx.arc(topGoal.x, topGoal.y, topGoal.radius, 0, Math.PI * 2);
  ctx.arc(bottomGoal.x, bottomGoal.y, bottomGoal.radius, 0, Math.PI * 2);
  ctx.fill();
}

var thumbImg = document.createElement('img');
thumbImg.style.transform = "rotate(45deg)";
thumbImg.src = '//repo.bfw.wiki/bfwrepo/image/5fd7fee24ce6e.png';

function drawBall() {

  // ctx.beginPath();  
  // ctx.arc(ballX, ballY, ballRadius, 0, Math.PI * 2);
  // ctx.fillStyle = 'blue';    
  // ctx.fill();
  // ctx.closePath();

  ctx.save();
  // ctx.translate(ballX, ballY);
  // ctx.rotate(ballRotation);
  ctx.drawImage(thumbImg, ballX - 20, ballY - 20, 40, 40);
  ctx.restore();
}

function drawObstacles() {
  ctx.fillStyle = 'transparent';
  obstacles.forEach(obstacle => {
    ctx.beginPath();
    ctx.shadowColor = "rgba(0,0,0,1)";
    ctx.shadowOffsetY = 0;
    ctx.shadowBlur = 10;
    ctx.arc(obstacle.x, obstacle.y, obstacle.radius, 0, Math.PI * 2);.........完整代码请登录后点击上方下载按钮下载查看