day50-Insect Catch Game（捉虫游戏）

50 天学习 50 个项目 - HTMLCSS and JavaScript

day50-Insect Catch Game（捉虫游戏）

效果

在这里插入图片描述

index.html

<!DOCTYPE html>
<html lang="en"><head><meta charset="UTF-8" /><meta name="viewport" content="width=device-width, initial-scale=1.0" /><title>Catch The Insect</title><link rel="stylesheet" href="style.css" />
</head><body><!-- 第一屏 --><div class="screen"><h1>消灭昆虫游戏</h1><button class="btn" id="start-btn">开始</button></button></div><!-- 第二屏 --><div class="screen"><h1>你"最想消灭"的昆虫是什么?</h1><ul class="insects-list"><li><button class="choose-insect-btn"><p>苍蝇</p><img src="http://pngimg.com/uploads/fly/fly_PNG3946.png" alt="fly"></button></li><li><button class="choose-insect-btn"><p>蚊子</p><img src="http://pngimg.com/uploads/mosquito/mosquito_PNG18175.png" alt="mosquito" /></button></li><li><button class="choose-insect-btn"><p>蜘蛛</p><img src="http://pngimg.com/uploads/spider/spider_PNG12.png" alt="spider" /></button></li><li><button class="choose-insect-btn"><p>蟑螂</p><img src="http://pngimg.com/uploads/roach/roach_PNG12163.png" alt="roach" /></button></li></ul></div><!-- 第三屏 --><div class="screen game-container" id="game-container"><h3 id="time" class="time">时间: 00:00</h3><h3 id="score" class="score">得分: 0</h3><h5 id="message" class="message">你生气了吗? <br>你在玩一个不可能的游戏!!</h5></div><script src="script.js"></script>
</body></html>

style.css

@import url('https://fonts.googleapis.com/css?family=Press+Start+2P&display=swap');* {box-sizing: border-box;
}body {background-color: #516dff;color: #fff;font-family: 'Press Start 2P', sans-serif;height: 100vh;overflow: hidden;margin: 0;text-align: center;
}a {color: #fff;
}/* 标题 */
h1 {line-height: 1.4;
}/* 按钮 */
.btn {border: 0;background-color: #fff;color: #516dff;padding: 15px 20px;font-family: inherit;cursor: pointer;outline: 0;
}.btn:hover {opacity: 0.9;
}/* 每块屏 */
.screen {/* 子元素竖直居中 */display: flex;flex-direction: column;align-items: center;justify-content: center;height: 100vh;width: 100vw;transition: margin 0.5s ease-out;
}/* 向上隐藏 */
.screen.up {margin-top: -100vh;
}/* 第二屏 昆虫容器 */
.insects-list {display: flex;flex-wrap: wrap;justify-content: center;list-style-type: none;padding: 0;
}.insects-list li {margin: 10px;
}/* 每一项昆虫 */
.choose-insect-btn {background-color: transparent;border: 2px solid #fff;color: #fff;cursor: pointer;font-family: inherit;width: 150px;height: 150px;
}.choose-insect-btn:hover {background-color: #fff;color: aqua;
}.choose-insect-btn:active {background-color: rgba(255, 255, 255, 0.7);
}/* 图片 */
.choose-insect-btn img {width: 100px;height: 100px;object-fit: contain;
}/* 第三屏 */
.game-container {/* 子绝父相，用于昆虫的定位 */position: relative;
}/* 时间 分数 */
.time,
.score {position: absolute;top: 20px;
}.time {left: 20px;
}.score {right: 20px;
}/* 结束语 默认隐藏 */
.message {line-height: 1.7;background-color: rgba(0, 0, 0, 0.5);width: 100%;padding: 20px;z-index: 100;text-align: center;/* 隐藏 */opacity: 0;position: absolute;top: 0;left: 50%;transform: translate(-50%, -150%);transition: transform 0.4s ease-in;
}/* 显示 */
.message.visible {transform: translate(-50%, 150%);opacity: 1;
}/* 昆虫 */
.insect {cursor: pointer;display: flex;align-items: center;justify-content: center;width: 100px;height: 100px;/* 绝对定位 */position: absolute;transform: translate(-50%, -50%) scale(1);transition: transform 0.3s ease-in-out;
}/* 被抓住 隐藏 */
.insect.caught {transform: translate(-50%, -50%) scale(0);
}/* 昆虫图片 */
.insect img {width: 100px;height: 100px;
}

script.js

// 重点 flex position transform: translate(-50%, -50%) scale(0); transition 函数
// setTimeout setInterval
// 1.获取元素节点
const screens = document.querySelectorAll('.screen');//三块屏
const choose_insect_btns = document.querySelectorAll('.choose-insect-btn');//选择昆虫按钮们
const start_btn = document.getElementById('start-btn')//开始按钮
const game_container = document.getElementById('game-container')//第三屏
const timeEl = document.getElementById('time')//时间
const scoreEl = document.getElementById('score')//分数
const message = document.getElementById('message')//结束语
let seconds = 0//秒
let score = 0
let selected_insect = {}//存储选中的昆虫项
let timer = 0 //记录时间的间歇期
// 2.绑定点击 事件 第一屏向上移动，隐藏
start_btn.addEventListener('click', () => screens[0].classList.add('up'))
// 遍历所有昆虫，绑定点击事件
choose_insect_btns.forEach(btn => {btn.addEventListener('click', () => {const img = btn.querySelector('img')const src = img.getAttribute('src')const alt = img.getAttribute('alt')// 存储当前的昆虫选项selected_insect = { src, alt }// 第二屏向上移动，隐藏screens[1].classList.add('up')// 一秒后，创建一个昆虫setTimeout(createInsect, 1000)// 开始游戏startGame()})
})
// 函数 开始游戏
function startGame() {// 开启间歇期 每过一秒记录时间timer =setInterval(increaseTime, 1000)
}
// 函数，记录时间
function increaseTime() {let m = Math.floor(seconds / 60)let s = seconds % 60m = m < 10 ? `0${m}` : ms = s < 10 ? `0${s}` : stimeEl.innerHTML = `Time: ${m}:${s}`seconds++
}
// 函数：在第三屏中创建昆虫
function createInsect() {const insect = document.createElement('div')insect.classList.add('insect')// 设置昆虫位置const { x, y } = getRandomLocation()insect.style.top = `${y}px`insect.style.left = `${x}px`// 随机设置昆虫角度insect.innerHTML = `<img src="${selected_insect.src}" alt="${selected_insect.alt}" style="transform: rotate(${Math.random() * 360}deg)" />`// 点击，即触发捕捉昆虫insect.addEventListener('click', catchInsect)// 显示昆虫game_container.appendChild(insect)
}
// 函数：随机获取位置
function getRandomLocation() {const width = window.innerWidthconst height = window.innerHeightconst x = Math.random() * (width - 200) + 100const y = Math.random() * (height - 200) + 100return { x, y }
}
// 函数：捕捉昆虫
function catchInsect() {// 分数+increaseScore()// 隐藏this.classList.add('caught')// 移除昆虫setTimeout(() => this.remove(), 2000)// 添加昆虫addInsects()
}
// 函数：添加昆虫，再次开启两个定时器，即捕捉成功1只之后，创建两只昆虫。源源不断
function addInsects() {setTimeout(createInsect, 1000)setTimeout(createInsect, 1500)
}
// 函数：分数增加
function increaseScore() {score++// 大于19分。游戏结束。结束语显示if (score > 19) {clearInterval(timer)message.classList.add('visible')}scoreEl.innerHTML = `Score: ${score}`
}