<!-- 移动你的光标，小狗会看方向。点击或轻拍，狗就会走路 -->
<body>
<div class="wrapper">
<!-- 如果你想看到标记，去掉d-none -->
<!-- 指示狗的位置 -->
<div class="marker red d-none"></div>
<!-- 指示光标位置 -->
<div class="marker green d-none"></div>
<!-- 表示狗的面朝位置'-->
<div class="marker blue d-none"></div>
<div class="dog">
<div class="body-wrapper">
<div class="body img-bg"></div>
</div>
<div class="head-wrapper">
<div class="head img-bg"></div>
</div>
<div class="leg-wrapper">
<div class="leg one img-bg"></div>
</div>
<div class="leg-wrapper">
<div class="leg two img-bg"></div>
</div>
<div class="leg-wrapper">
<div class="leg three img-bg"></div>
</div>
<div class="leg-wrapper">
<div class="leg four img-bg"></div>
</div>
<div class="tail-wrapper">
<div class="tail img-bg"></div>
</div>
</div>
</div>
<div class="indicator"></div>
<div class="sign">
by masahito / <a href="http://www.ma5a.com/" >ma5a.com</a>
</div>
</body>{/tabs-pane}
{tabs-pane label="css"}
* {
box-sizing: border-box;
}
body {
padding: 0;
margin: 0;
font-family: sans-serif;
background-color: rgb(248, 219, 130);
}
p, h1, h2, h3, h4 {
display: inline-block;
margin-block-start: 0em;
margin-block-end: 0em;
margin-inline-start: 0px;
margin-inline-end: 0px;
padding-inline-start: 0px;
}
.wrapper {
position: absolute;
width: 100%;
height: 100vh;
overflow: hidden;
display: flex;
justify-content: center;
align-items: center;
}
.leg {
position: absolute;
background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAMCAYAAABfnvydAAAAAXNSR0IArs4c6QAAAElJREFUKFNjZICC/////4exQTQjIyMjmAYR6JIwhSBFjLMiLP6nLj+OrBnOnh1pyTBSFIA8jS0sQGGQtuIEJDhhipBDCyQJ4gMALug8VaRjkWwAAAAASUVORK5CYII=);
width: calc(2 * 8px);
height: calc(2 * 12px);
background-size: calc(2 * 8px) calc(2 * 12px) !important;
transition: 0.15s;
}
.body {
position: absolute;
background-image: url(data:image/png;base64,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);
width: calc(2 * 6 * 48px);
height: calc(2 * 48px);
background-size: calc(2 * 6 * 48px) calc(2 * 48px) !important;
}
.dog {
position: absolute;
width: calc(2 * 48px);
height: calc(2 * 48px);
animation: fade-in forwards 1s;
transition: 0.5s;
}
@keyframes fade-in {
0% { opacity: 0; }
100% { opacity: 1; }
}
.head {
position: absolute;
background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAALoAAAAgCAYAAACl82LUAAAAAXNSR0IArs4c6QAAA+hJREFUeF7tmtuV1DAMhiddQSdQABS1FACdQFezx4cVR2h1+X1LnJXnaSbjRLfPkhz7eOzP9kACDxwJbNwmbg88bgP6y5dPz++//txG383WWh64BTgF8m8/fz9+fP382LCvBdBdtNmgN0Rqteqymj4NLp1+CwR6rSNrx3tWUjanMVdn9dWqy2r69BJbyw46PgRdOrL8towpbcVox3N5pX0pnwK7/F6u0Wdke0PyqXWydJghuzzT8rdm/0i7e4FtuX8ma1Wgk3M9IwjCEZlXZnMpl8viuhH0FHiCpQYEDjivJlKO9ImU3Rrwcl/kbz7hKQHU2Nii28x7OOiR7TzhIay5oGttg6fAKMdrkGkOtkC3xiIQeLI1+yx/IM6XeqJ2WxOPrh/HESawmcC2PHs2a6pDrJklA21lWBmImqBHWbwmu2r6ebCjstFAjrA78rmlSyTb6m21695Yq2VDe+ezWHsH+uhgczCjjFojuya7IjrUyEZBR9sJS3ZNxaqtYlo7Z12jtRePnwcy/RfBfqbP/wN9luCzQdMWqx50V9pd9JoFemQzB1iDU4Kq/S4yvAngVQOkD69JKnysrGgfHnQKtgwId8qVoEeQR/14BILVwnAAve/y+VpVlvej91wC+uxge1k9q2wkm7eCLquaBBTp0aOMTrpZE4Xs02TPhFxj7V9Gzwrbqna3LkK1iaFl9V7QqZ9vaV2u8PkG/e0cTdQCRP/T+3MvU8nXfl7Ae0H3+tXIltn/b9Ane9jKbCPKqAe6tWt7RcAnuxh6vLcuKQ+oiUfkd2qbUmV0bSPlTNi0Ml8TVIQiHnhvl9rrv2sWl1YLY/Xn5frz+VSPkSBVUfoguodingZ0bwNlFuzRTnGrXCu4vHLwszDRmxIJpda/I9fQxasFujWRNbuQSV/GvAPdm2noQ5Fx1vZ0a9ARmWXMFaCTXNJRA6426PyZ3vGDDfpfry+V0SmjjC7jfBJE5z9mTzTudK7XLLmUBa3daN5yyImIZG+tNUEzemSzthBHr3Hf8uS2zIbRTNijcx/knCgAaPXQxnkTrVeutRNsTa4I0lGge/6qeeNkHYXw3ky5O6MfDbYoq2mBoEw3qrqgOvTKlX17NLnRxShPAlavb7Vm1rt6JLFYfTnSr2u2m6cXizIjgo0GWpbzHvktMiX0PeBZrxORitAjl/fv0QE6RJczxvTaK1uV8luzPTyP3mtsj8PJCXT4CNWlR6aX5RH5I2VrfbSlw0i5iJ2jx1ivKb21BHUgVkXhOt7ugP5oB+/n5fDABj1HnNNbuUFPj0AOB2zQc8Q5vZUb9PQI5HDABj1HnNNbuUFPj0AOB7wCKr30XX1N2MUAAAAASUVORK5CYII=);
width: calc(2 * 6 * 31px);
height: calc(2 * 32px);
background-size: calc(2 * 6 * 31px) calc(2 * 32px) !important;
}
.head-wrapper.happy > .head {
background-image: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAALoAAAAgCAYAAACl82LUAAAAAXNSR0IArs4c6QAABCpJREFUeF7tmtlx3DAMQFddxZ0kBSS/Hlfi8W9cQNJJ0tV6qAl2YAgnRVBSyP2yJYq4HkHwWG7zNz0wgAeWAWycJk4P3C4D+s+vX+4/fv+9jL6TrXN54BLgFMi///pze//2dJuwnwugq2gzQa+I1Nlml7PpU+HS9E9coEcdGW2vWQnZHNocndXPNrucTZ+9xEbZ8bY3QaeOLP9LxpSyorXjsbxSvpRfgZ3+XZ7Br2V5A/KhdJJ0yJBd+pT8zdnf0u69wNZ8n8laCHRwrmYEQNgi89JsTuViWVg3gB4CD7BEQMCA49mEyqE+obJrA16+s/yNBzwkgIiNNbplfoNBt2zHCc/Dmgo6VzZoCrRyPAcZ52AJdKmtBwJNNmef5A+P86meXrulgQfPl2UxE1gmsDV9Z7PGOkQaWTTQUoalgYgE3crikezK6afB7pXtDWQLuy2fS7pYsqXalnuutZVKNm/t3Iu1Deitg43BtDJqRHYku3p0iMj2gu4tJyTZkRkrOotx5Zz0DNZeOH4ayPDOgr2nzz+BniW4N2jcYlWD7ki7i15ZoFs2Y4A5OCmo3P9FhjYAtNnAU4dHkgpuS2e0/x50CPa6uHt+vb2/vWwOnY4E3YLcqsctEKQSBgOo/U3752Zl+r33m0NAzw62ltV7yF6z/PPrqgaGvYdsK7NyAa8pzWhGw1uQFFBPjW5ldJAnDRSYrTjZmZBzrD0y+pEB7ymbm2p7Ox0Dou3a7NGLlm+tQYd6vqZ06RlvsHs40LOyC+yfa3DSbT8t4LW7LdFFqVX6ZLyfoGd4FfXJ1autnK6BLp3atpJtuc3aarS+b/1eW5esa6l/J+AeuZbfh8zo3EFKT9h6lE048NoptVZ/RxaXUgkj1efl+f1+Z6+ReGZFCr/1DcR8mNJFy2pZsFsnxbVypeDimUNbiHIQagtKbVFZs7UogS5lcM4uT7YvbTagayPN26mnnXQ8XRt0j0xt1wOCGJkuvTJBLm5P1wjRoOM+PQtZz/YiBZnbkfE88+7SRG1uCno2aBBszfFZsOGRLUGaab+0tZk1yHDG1xIL9QW+BOfZpbHA1rYwI3emYHBzF+isfjY1epbTsTOtRVEWbJZc0DFL/iNQSQdWm5Ng5ryAQu2t0bFvLPglsLnkEtlxgkRRzj+s26NSQj3VXZfWgw0ym3XHBgcCFletZhesgwbCXrmfpvdOoEO8wH/WQOAGm1Z+QXs46FsTxtvLo5vIzVHx9mLprUWwj4CtRiYXhFofSNuJntp+L/C4ho8McI9uGW0se3HZB6Bbg4Oz27yPvte4Pc4GJ8DlI68ue2RK0+wRsvHWnSW/tc2WvNbvrW1KbdaQ3mEdL3dBv7WDZ39jeGCCPkach7dygj48AmM4YII+RpyHt3KCPjwCYzhggj5GnIe3coI+PAJjOOADdCQTbGUe9fwAAAAASUVORK5CYII=);
}
.head-wrapper.happy {
animation: infinite 0.5s pant;
}
@keyframes pant {
0%, 100% { transform: translateY(-1px); }
50% { transform: translateY(1px); }
}
.head-wrapper.flip.happy {
animation: infinite 0.5s pant-flip;
}
@keyframes pant-flip {
0%, 100% { transform: translateY(-1px) scale(-1, 1); }
50% { transform: translateY(1px) scale(-1, 1); }
}
.tail {
position: absolute;
background:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAICAYAAADED76LAAAAAXNSR0IArs4c6QAAADZJREFUKFNjZICCWREW/2FsEJ224gQjiAYTIMnU5ceR5RlmR1qCFTFik4SpBCmihwKCjiTkTQB1sCqti9mJ/QAAAABJRU5ErkJggg==);
width: calc(2 * 8px);
height: calc(2 * 8px);
background-size: calc(2 * 8px) !important;
}
.tail-wrapper {
position: absolute;
width: calc(2 * 8px);
height: calc(2 * 8px);
transition: 0.15s;
}
.body-wrapper {
position: absolute;
width: calc(2 * 48px);
height: calc(2 * 48px);
overflow: hidden;
}
.body-wrapper,
.head-wrapper {
z-index: 1;
}
.walk-1 {
animation: infinite 0.4s walking;
animation-delay: 0;
}
.walk-2 {
animation: infinite 0.4s walking;
animation-delay: 0.2s;
}
@keyframes walking {
0%, 100% { transform: translateY(-4px); }
50% { transform: translateY(0); }
}
.wag {
animation: infinite 0.5s wag;
}
@keyframes wag {
0%, 100% { transform: translateX(-2px); }
50% { transform: translateX(2px); }
}
.head-wrapper {
position: absolute;
top: 6px;
left: 16px;
width: calc(2 * 31px);
height: calc(2 * 32px);
overflow: hidden;
}
.flip {
transform: scale(-1, 1);
}
.img-bg {
image-rendering: pixelated;
background-repeat: no-repeat !important;
}
.sign {
position: absolute;
color: #9a5838;
bottom: 10px;
right: 10px;
font-size: 10px;
}
a {
color: #9a5838;
text-decoration: none;
}
a:hover {
text-decoration: underline;
}
.indicator {
position: fixed;
top: 10px;
left: 10px;
color: #9a5838;
}
.d-none {
display: none;
}
.indicator {
position: fixed;
top: 10px;
right: 10px;
}
.marker {
width: 10px;
height: 10px;
border-radius: 50%;
position: absolute;
transition: 0.5s;
z-index: 100;
margin-top: -5px;
margin-left: -5px;
}
.red { background-color: rgb(255, 64, 0); }
.green { background-color: rgb(42, 239, 190); }
.blue { background-color: rgb(0, 140, 255); }{/tabs-pane}
{tabs-pane label="js"}
function init() {
const elements = {
body: document.querySelector('.wrapper'),
wrapper: document.querySelector('.wrapper'),
dog: document.querySelector('.dog'),
marker: document.querySelectorAll('.marker'),
// indicator: document.querySelector('.indicator'),
}
const animationFrames = {
rotate: [[0], [1], [2], [3], [5], [3, 'f'], [2, 'f'], [1, 'f']]
}
const directionConversions = {
360: 'up',
45: 'upright',
90: 'right',
135: 'downright',
180: 'down',
225: 'downleft',
270: 'left',
315: 'upleft',
}
const angles = [360, 45, 90, 135, 180, 225, 270, 315]
const defaultEnd = 4
// A ---- A ________ ________
// | | | |
// | ^ ^ | | |
// ____^___ _________|________|
// | | | | | | | |
// 1 2 3 4
// L R L R
const partPositions = [
{ //0
leg1: { x: 26, y: 43 },
leg2: { x: 54, y: 43 },
leg3: { x: 26, y: 75 },
leg4: { x: 54, y: 75 },
tail: { x: 40, y: 70, z: 1 },
},
{ //1
leg1: { x: 33, y: 56 },
leg2: { x: 55, y: 56 },
leg3: { x: 12, y: 72 },
leg4: { x: 32, y: 74 },
tail: { x: 20, y: 64, z: 1 },
},
{ //2
leg1: { x: 59, y: 62 },
leg2: { x: 44, y: 60 },
leg3: { x: 25, y: 64 },
leg4: { x: 11, y: 61 },
tail: { x: 4, y: 44, z: 1 },
},
{ //3
leg1: { x: 39, y: 63 },
leg2: { x: 60, y: 56 },
leg3: { x: 12, y: 52 },
leg4: { x: 28, y: 50 },
tail: { x: 7, y: 21, z: 0 },
},
{ //4
leg1: { x: 23, y: 54 },
leg2: { x: 56, y: 54 },
leg3: { x: 24, y: 25 },
leg4: { x: 54, y: 25 },
tail: { x: 38, y: 2, z: 0 },
},
{ //5
leg1: { x: 21, y: 58 },
leg2: { x: 41, y: 64 },
leg3: { x: 53, y: 50 },
leg4: { x: 69, y: 53 },
tail: { x: 72, y: 22, z: 0 },
},
{ //6
leg1: { x: 22, y: 59 },
leg2: { x: 30, y: 64 },
leg3: { x: 56, y: 60 },
leg4: { x: 68, y: 62 },
tail: { x: 78, y: 40, z: 0 },
},
{ //7
leg1: { x: 47, y: 45 },
leg2: { x: 24, y: 53 },
leg3: { x: 68, y: 68 },
leg4: { x: 47, y: 73 },
tail: { x: 65, y: 65, z: 1 },
},
]
const control = {
x: null,
y: null,
angle: null,
}
const distance = 30
const nearestN = (x, n) => x === 0 ? 0 : (x - 1) + Math.abs(((x - 1) % n) - n)
const px = num => `${num}px`
const radToDeg = rad => Math.round(rad * (180 / Math.PI))
const degToRad = deg => deg / (180 / Math.PI)
const overlap = (a, b) =>{
const buffer = 20
return Math.abs(a - b) < buffer
}
const rotateCoord = ({ angle, origin, x, y }) =>{
const a = degToRad(angle)
const aX = x - origin.x
const aY = y - origin.y
return {
x: (aX * Math.cos(a)) - (aY * Math.sin(a)) + origin.x,
y: (aX * Math.sin(a)) + (aY * Math.cos(a)) + origin.y,
}
}
const setStyles = ({ target, h, w, x, y }) =>{
if (h) target.style.height = h
if (w) target.style.width = w
target.style.transform = `translate(${x || 0}, ${y || 0})`
}
const targetAngle = dog =>{
if (!dog) return
const angle = radToDeg(Math.atan2(dog.pos.y - control.y, dog.pos.x - control.x)) - 90
const adjustedAngle = angle < 0 ? angle + 360 : angle
return nearestN(adjustedAngle, 45)
}
const reachedTheGoalYeah = (x, y) =>{
return overlap(control.x , x) && overlap(control.y, y)
}
const positionLegs = (dog, frame) => {
;[5, 7, 9, 11].forEach((n, i) => {
const { x, y } = partPositions[frame][`leg${i + 1}`]
setStyles({
target: dog.childNodes[n],
x: px(x), y: px(y),
})
})
}
const moveLegs = dog => {
;[5, 11].forEach(i => dog.childNodes[i].childNodes[1].classList.add('walk-1'))
;[7, 9].forEach(i => dog.childNodes[i].childNodes[1].classList.add('walk-2'))
}
const stopLegs = dog => {
;[5, 11].forEach(i => dog.childNodes[i].childNodes[1].classList.remove('walk-1'))
;[7, 9].forEach(i => dog.childNodes[i].childNodes[1].classList.remove('walk-2'))
}
const positionTail = (dog, frame) => {
setStyles({
target: dog.childNodes[13],
x: px(partPositions[frame].tail.x), y: px(partPositions[frame].tail.y),
})
dog.childNodes[13].style.zIndex = partPositions[frame].tail.z
dog.childNodes[13].childNodes[1].classList.add('wag')
}
const animateDog = ({ target, frameW, currentFrame, end, data, part, speed, direction }) => {
const offset = direction === 'clockwise' ? 1 : -1
//update indicator
// elements.indicator.innerHTML = `dog-angle: ${data.angle} | control angle:${control.angle} | currentFrame: ${currentFrame} | direction: ${direction} | offset: ${offset} | frameOffset: ${data.animation[currentFrame][0] * frameW * offset} | ${data.facing.x} / ${data.facing.y} `
target.style.transform = `translateX(${px(data.animation[currentFrame][0] * -frameW)})`
if (part === 'body') {
positionLegs(data.dog, currentFrame)
moveLegs(data.dog)
positionTail(data.dog, currentFrame)
} else {
target.parentNode.classList.add('happy')
}
data.angle = angles[currentFrame]
data.index = currentFrame
target.parentNode.classList[data.animation[currentFrame][2] === 'f' ? 'add' : 'remove']('flip')
let nextFrame = currentFrame + offset
nextFrame = nextFrame === -1
? data.animation.length - 1
: nextFrame === data.animation.length
? 0
: nextFrame
if (currentFrame !== end) {
data.timer[part] = setTimeout(()=> animateDog({
target, data, part, frameW,
currentFrame: nextFrame, end, direction,
speed,
}), speed || 150)
} else if (part === 'body') {
// end
control.angle = angles[end]
data.walk = true
setTimeout(()=> {
stopLegs(data.dog)
}, 200)
setTimeout(()=> {
document.querySelector('.happy')?.classList.remove('happy')
}, 5000)
}
}
const triggerDogAnimation = ({ target, frameW, start, end, data, speed, part, direction }) => {
clearTimeout(data.timer[part])
data.timer[part] = setTimeout(()=> animateDog({
target, data, part, frameW,
currentFrame: start, end, direction,
speed,
}), speed || 150)
}
const getDirection = ({ pos, facing, target }) =>{
const dx2 = facing.x - pos.x
const dy1 = pos.y - target.y
const dx1 = target.x - pos.x
const dy2 = pos.y - facing.y
return dx2 * dy1 > dx1 * dy2 ? 'anti-clockwise' : 'clockwise'
}
const turnDog = ({ dog, start, end, direction }) => {
triggerDogAnimation({
target: dog.dog.childNodes[3].childNodes[1],
frameW: 31 * 2,
start, end,
data: dog,
speed: 100,
direction,
part: 'head'
})
setTimeout(()=>{
triggerDogAnimation({
target: dog.dog.childNodes[1].childNodes[1],
frameW: 48 * 2,
start, end,
data: dog,
speed: 100,
direction,
part: 'body'
})
}, 200)
}
const createDog = () => {
const { dog } = elements
const { width, height, left, top } = dog.getBoundingClientRect()
dog.style.left = px(left)
dog.style.top = px(top)
positionLegs(dog, 0)
const index = 0
const dogData = {
timer: {
head: null, body: null, all: null,
},
pos: {
x: left + (width / 2),
y: top + (height / 2),
},
actualPos: {
x: left,
y: top,
},
facing: {
x: left + (width / 2),
y: top + (height / 2) + 30,
},
animation: animationFrames.rotate,
angle: 360,
index,
dog,
}
elements.dog = dogData
turnDog({
dog: dogData,
start: index, end: defaultEnd,
direction: 'clockwise'
})
positionTail(dog, 0)
}
const checkBoundaryAndUpdateDogPos = (x, y, dog, dogData) =>{
const lowerLimit = -40 // buffer from window edge
const upperLimit = 40
if (x > lowerLimit && x < (elements.body.clientWidth - upperLimit)){
dogData.pos.x = x + 48
dogData.actualPos.x = x
}
if (y > lowerLimit && y < (elements.body.clientHeight - upperLimit)){
dogData.pos.y = y + 48
dogData.actualPos.y = y
}
dog.style.left = px(x)
dog.style.top = px(y)
}
const positionMarker = (i, pos) => {
elements.marker[i].style.left = px(pos.x)
elements.marker[i].style.top = px(pos.y)
}
const moveDog = () =>{
clearInterval(elements.dog.timer.all)
const { dog } = elements.dog
elements.dog.timer.all = setInterval(()=> {
const { left, top } = dog.getBoundingClientRect()
const start = angles.indexOf(elements.dog.angle)
const end = angles.indexOf(targetAngle(elements.dog))
// stop dog
if (reachedTheGoalYeah(left + 48, top + 48)) {
clearInterval(elements.dog.timer.all)
const { x, y } = elements.dog.actualPos
dog.style.left = px(x)
dog.style.top = px(y)
stopLegs(dog)
turnDog({
dog: elements.dog,
start,
end: defaultEnd,
direction: 'clockwise'
})
return
}
let { x, y } = elements.dog.actualPos
const dir = directionConversions[targetAngle(elements.dog)]
if (dir !== 'up' && dir !== 'down') x += (dir.includes('left')) ? -distance : distance
if (dir !== 'left' && dir !== 'right') y += (dir.includes('up')) ? -distance : distance
positionMarker(0, elements.dog.pos)
positionMarker(1, control)
const { x: x2, y: y2 } = rotateCoord({
angle: elements.dog.angle,
origin: elements.dog.pos,
x: elements.dog.pos.x,
y: elements.dog.pos.y - 100,
})
elements.dog.facing.x = x2
elements.dog.facing.y = y2
positionMarker(2, elements.dog.facing)
if (start === end) {
elements.dog.turning = false
}
if (!elements.dog.turning && elements.dog.walk) {
if (start !== end) {
elements.dog.turning = true
const direction = getDirection({
pos: elements.dog.pos,
facing: elements.dog.facing,
target: control,
})
turnDog({
dog: elements.dog,
start, end, direction,
})
} else {
checkBoundaryAndUpdateDogPos(x, y, dog, elements.dog)
moveLegs(dog)
}
}
}, 200)
}
createDog()
const triggerTurnDog = () => {
const dog = elements.dog
dog.walk = false
control.angle = null
const direction = getDirection({
pos: dog.pos,
facing: dog.facing,
target: control,
})
const start = angles.indexOf(dog.angle)
const end = angles.indexOf(targetAngle(dog))
turnDog({
dog,
start, end, direction
})
}
elements.body.addEventListener('mousemove', e =>{
control.x = e.pageX
control.y = e.pageY
triggerTurnDog()
})
elements.body.addEventListener('click', moveDog)
}
window.addEventListener('DOMContentLoaded', init){/tabs-pane}
代码来自CodePeninteractive puppy
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