和水果忍者很像的前端小游戏分享

前些天发现了一个人工智能学习网站，通俗易懂，风趣幽默，最重要的屌图甚多，忍不住分享一下给大家。点击跳转到网站。

动图有点大这里就不给了，玩法和水果忍者类似用刀切掉飞上来的蔬菜就可以得分：

源码贴给大家：

<div class="stage stage-bg"></div>
<div class="stage stage-fg"></div>
<div class="score"></div>
<div class="timer">
  <div class="replay"></div>
  <div class="outter">??</div>
  <div class="face">
    <div class="inner">??</div>
  </div>
</div>
<div class="follower">
  <div class="dagger">🗡?</div>
</div>

@import url('https://fonts.googleapis.com/css2?family=Kdam+Thmor+Pro&display=swap');

html, body {
  margin:0;
  padding:0;
  width:100;
  height:100%;
}

body {
  overflow:hidden;
  background:url(https://images.unsplash.com/photo-1628006203055-b4aa5f6300f3?q=60&w=2000);
  background-size:cover;
  background-position:center;
}

div {
  position:absolute;
  left:0;
  top:0;
  user-select:none;
}

.stage-bg {
  background:linear-gradient(rgba(0,0,0,0) 77%,rgba(0,0,0,0.5));
}

.follower {
  font-size:150px;
  pointer-events:none;
}

.stage {
  width:100%;
  height:100%;
}

.score {
  font-size:40px;
  left:20px;
  top:10px;
  font-family: 'Kdam Thmor Pro', sans-serif;
  color:#fff;
}

.score .num {
  font-size:0.65em;
  color:#ccc;
}

.timer {
  font-size:85px;
  top:unset;
  bottom:115px;
  left:15px;
  display:flex;
}

.timer .face {
  overflow:hidden;
  width:65px;
  height:65px;
  border-radius:50%;
  left:10px;
  top:22px;
}

.timer .face .inner {
  left:-10px;
  top:-22px;
}

.replay {
  font-size:25px;
  width:200px;
  left:105px;
  top:35px;
  font-family: 'Kdam Thmor Pro', sans-serif;
  color:#fff;
}

const stageBg = document.querySelector('.stage-bg')
const stageFg = document.querySelector('.stage-fg')
const score = document.querySelector('.score')
const timer = document.querySelector('.timer')
const veg = ['🫑','🍅','🥕','🍆','🥬','🥔','🥦','🧅','🧄','🌶?','🫛']
const vegTLs = []
const props = { x:0, dir:1 }
let vegNum = 0
let pts = 0
let timeScale = 1

gsap.set('.follower', {filter:'drop-shadow(30px 30px 4px rgba(0,0,0,0.1))'})
gsap.set('.dagger', {rotate:125, xPercent:-50, yPercent:-55})

window.onpointerdown = (e)=> {
  gsap.timeline({defaults:{duration:0.3, ease:'back.out(4)'}})
    .to('.dagger', {rotate:200, xPercent:-30, scale:0.8}, 0)
    .to('.follower', {filter:'drop-shadow(5px 7px 2px rgba(0,0,0,0.3))'}, 0)
    .add(()=>{ //check distance between veg and dagger
      const mark = document.createElement('div')
      stageFg.append(mark)
      gsap.fromTo(mark, {innerHTML:'🗯?', x:e.x+84, y:e.y-20, rotate:'random(0,360)'}, {scale:4, duration:0.1, opacity:0.5, onComplete:()=>mark.remove()})    
      for (const item of stageBg.children) {
        const dX = Math.abs(gsap.getProperty(item,'x') - (e.x+84))
        const dY = Math.abs(gsap.getProperty(item,'y') - (e.y-25))
        const dist = (dX + dY) / 2
        if (dist<60){
          if (item.innerHTML=='??') {
            timeScale = 0.2
            gsap.to(vegTLs, {timeScale:timeScale})
            gsap.to('.stage-bg', {background:'linear-gradient(rgba(0,120,230,0.5) 77%,rgba(0,100,255,0.9))'})
            gsap.delayedCall(5, ()=>{
              timeScale = 1
              gsap.set(vegTLs, {timeScale:1})
              gsap.to('.stage-bg', {background:'linear-gradient(rgba(0,0,0,0) 77%,rgba(0,0,0,0.5))'})
            })
          }
          pts++
          score.innerHTML = 'Sliced '+pts+'<span class="num"> / '+vegNum+'</span>'
          stageFg.append(item)
          gsap.timeline()
          .set(mark, {autoAlpha:0})
          .set(item, {innerHTML:'💥', rotate:'random(0,200,0)', filter:'drop-shadow(0px 0px 0px rgba(0,0,0,0))'})
          .to(item, {duration:0.1, scale:2})
          .to(item, {duration:0.1, scale:0, ease:'expo.inOut'})
        }
      }
    }, 0.15)
}

window.onpointerup = (e)=> {
  gsap.to('.dagger', {duration:0.3, rotate:125, xPercent:-50, scale:1})
  gsap.to('.follower', {duration:0.3, filter:'drop-shadow(30px 30px 4px rgba(0,0,0,0.1))'})
}

window.onpointermove = (e)=>{  
  props.x = gsap.getProperty('.follower', 'x')
  props.dir = (e.x>props.x)? -1:1  
  gsap.to('.follower', {y:e.y})
  gsap.to('.follower', {x:e.x, duration:1, ease:'expo', onUpdate:()=>{
    const rot = Math.abs(e.x-gsap.getProperty('.follower', 'x'))/6
    gsap.set('.follower', {rotate:gsap.utils.clamp(0,33,rot)*props.dir})
  }})
}

function addveg(){ 
  vegNum++
  score.innerHTML = 'Sliced '+pts+'<span class="num"> / '+vegNum+'</span>'
  const f = document.createElement('div')
  stageBg.append(f)
  vegTLs.push(
    gsap.timeline({onComplete:()=>{f.remove(); vegTLs.shift()}})
    .fromTo(f, {
      innerHTML:(vegNum==8||vegNum==36)?'??':veg[gsap.utils.random(0,veg.length-1,1)],
      fontSize:99,
      xPercent:-50,
      yPercent:-50,
      y:innerHeight+99,
      x:gsap.utils.random(200,innerWidth-100,1),
      rotate:(vegNum%2==0)?10:-10,
      filter: 'drop-shadow(20px -10px 4px rgba(0,0,0,0.2))'
    }, {
      duration:3,
      x:'+='+'random(-200,200)',
      rotate:(vegNum%2==0)?-10:10
    })
    .to(f, {
      y:gsap.utils.random(0,innerHeight/2,1),    
      filter: 'drop-shadow(30px 30px 4px rgba(0,0,0,0.1))',
      duration:1.5,
      yoyo:true,
      repeat:1
    }, 0)
    .timeScale(timeScale)  
  )  
}

const vegTL = gsap.to(window, {duration:1, repeat:50, onRepeat:addveg})

const timerTL = gsap.timeline({onComplete:gameEnd})
  .to('.timer .face', {rotate:-50, ease:'power1.in'})
  .to('.timer .face', {rotate:0, ease:'none', duration:vegTL.totalDuration()})

function gameEnd(){
  gsap.timeline()
  .fromTo('.replay', {
    innerHTML:'?? Replay?',
    opacity:0,
    x:100
  },{
    ease:'back.out(3)',
    opacity:1,
    x:0
  })
  
  timer.onclick=()=>{
    timer.onclick = null
    pts = vegNum = 0
    score.innerHTML = 'Score: 0'
    gsap.to('.replay', {opacity:0})
    vegTL.play(0)
    timerTL.play(0)
  }
}