机器学习——ml5.js之人工智能玩断网游戏小恐龙
本帖最后由 云天 于 2022-12-31 14:33 编辑最近在学习机器学习方面的知识，想着做个东西玩玩，然后就接触到了ml5.js，ml5.js 是基于tensorflow.js的深度学习框架，它安装简便，API简单易懂，直接在浏览器里面运行，适合作为深度学习的入门以及非人工智能专业的深度学习的工具。结合使用谷歌开源的Teachable Machine来训练模型。这里不得不夸一下谷歌工程师的创造力，让我们能在不写一行代码的情况下训练模型。国内，我使用英荔AI训练平台，https://train.aimaker.space/train/image/。本项目结合Teachable Machine和Chrome断网小游戏，通过图像识别来玩呢？显然是可以的，只是需要获得Chrome断网小游戏的源代码，在查询了一些资料后终于找到了他。<script type="text/javascript">
var canvas = document.createElement('canvas'),
a = document.getElementById('runner-container'),
ctx = canvas.getContext('2d');
canvas.id = 'c';
canvas.width = 1200;
canvas.height = 600;
canvas.style.position = "absolute"; // 设定风格
canvas.style.left = "100px"; // 位置在左上方
canvas.style.top = "100px";
a.appendChild(canvas);
//坐标
var spriteDefinition = {
CACTUS_LARGE: {x: 332, y: 2}, //大仙人掌
CACTUS_SMALL: {x: 228, y: 2}, //小仙人掌
CLOUD: {x: 86, y: 2}, //云
HORIZON: {x: 2, y: 54}, //地面
MOON: {x: 484, y: 2}, //月亮
PTERODACTYL: {x: 134, y: 2}, //翼龙
RESTART: {x: 2, y: 2}, //重新开始按钮
TEXT_SPRITE: {x: 655, y: 2}, //分数
TREX: {x: 848, y: 2}, //霸王龙
STAR: {x: 645, y: 2} //星星
},
FPS = 60,
DEFAULT_WIDTH = 1200,
imgSprite = document.getElementById('sprite');
Runner.config = {
ACCELERATION: 0.001,
BG_CLOUD_SPEED: 0.2,
BOTTOM_PAD: 10,
CLEAR_TIME: 3000,
CLOUD_FREQUENCY: 0.5,
GAMEOVER_CLEAR_TIME: 750,
GAP_COEFFICIENT: 0.6,
GRAVITY: 0.6,
INITIAL_JUMP_VELOCITY: 12,
INVERT_FADE_DURATION: 10000, //夜晚持续时间
INVERT_DISTANCE: 700, //每700距离进行昼夜交替
MAX_CLOUDS: 6, //云最大数量
MAX_OBSTACLE_LENGTH: 3,
MAX_OBSTACLE_DUPLICATION: 2,
MAX_SPEED: 13,
MIN_JUMP_HEIGHT: 35,
MOBILE_SPEED_COEFFICIENT: 1.2,
RESOURCE_TEMPLATE_ID: 'audio-resources',
SPEED: 6,
SPEED_DROP_COEFFICIENT: 3
};
Runner.defaultDimensions = {
HEIGHT: 150,
WIDTH: 1200
};
Runner.classes = {
CANVAS: 'runner-canvas',
CONTAINER: 'runner-container',
CRASHED: 'crashed',
ICON: 'icon-offline',
INVERTED: 'inverted',
SNACKBAR: 'snackbar',
SNACKBAR_SHOW: 'snackbar-show',
TOUCH_CONTROLLER: 'controller'
};
Runner.sounds = {
BUTTON_PRESS: 'offline-sound-press',
HIT: 'offline-sound-hit',
SCORE: 'offline-sound-reached'
};
Runner.keycodes = {
JUMP: {'38': 1, '32': 1},// Up, spacebar
DUCK: {'40': 1},// Down
RESTART: {'13': 1}// Enter
};
Runner.events = {
ANIM_END: 'webkitAnimationEnd',
CLICK: 'click',
KEYDOWN: 'keydown',
KEYUP: 'keyup',
MOUSEDOWN: 'mousedown',
MOUSEUP: 'mouseup',
RESIZE: 'resize',
TOUCHEND: 'touchend',
TOUCHSTART: 'touchstart',
VISIBILITY: 'visibilitychange',
BLUR: 'blur',
FOCUS: 'focus',
LOAD: 'load'
};
function Runner(outerContainerId, opt_config) {
if (Runner.instance_) {
return Runner.instance_;
}
Runner.instance_ = this;
//this.outerContainerEl = document.querySelector(outerContainerId);
this.containerEl = null;
this.snackbarEl = null;
//this.detailsButton = this.outerContainerEl.querySelector('#details-button');
this.config = opt_config || Runner.config;
this.dimensions = Runner.defaultDimensions;
this.canvas = null;
this.ctx = null;
this.tRex = null;
this.distanceMeter = null;
this.distanceRan = 0;
this.highestScore = 0;
this.time = 0;
this.runningTime = 0;
this.msPerFrame = 1000 / FPS;
this.currentSpeed = this.config.SPEED;
this.obstacles = [];//障碍物
this.started = false;
this.activated = false;
this.crashed = false;
this.paused = false;
this.inverted = false;
this.invertTimer = 0;
this.resizeTimerId_ = null;
this.playCount = 0;
// Sound FX.
this.audioBuffer = null;
this.soundFx = {};
// Global web audio context for playing sounds.
this.audioContext = null;
// Images.
this.images = {};
this.imagesLoaded = 0;
this.loadImages();
}
Runner.prototype = {
loadImages: function () {
this.spriteDef = spriteDefinition;
this.init();
},
loadSounds: function () {
this.audioContext = new AudioContext();
var resourceTemplate =document.getElementById(this.config.RESOURCE_TEMPLATE_ID).content;
for (var sound in Runner.sounds) {
var soundSrc =resourceTemplate.getElementById(Runner.sounds).src;
soundSrc = soundSrc.substr(soundSrc.indexOf(',') + 1);
var buffer = decodeBase64ToArrayBuffer(soundSrc);
// Async, so no guarantee of order in array.
this.audioContext.decodeAudioData(buffer, function (index, audioData) {
this.soundFx = audioData;
}.bind(this, sound));
}
},
setSpeed: function (opt_speed) {
if (opt_speed) this.currentSpeed = opt_speed;
},
init: function () {
this.setSpeed();
this.canvas = c;
this.ctx = ctx;
this.ctx.fillStyle = '#f7f7f7';
this.ctx.fill();
this.horizon = new Horizon(this.canvas, this.spriteDef, this.dimensions,
this.config.GAP_COEFFICIENT);
this.distanceMeter = new DistanceMeter(this.canvas, this.spriteDef.TEXT_SPRITE, this.dimensions.WIDTH);
this.tRex = new Trex(this.canvas, this.spriteDef.TREX);
this.startListening();
this.update();
},
//开场动画
playIntro: function () {
if (!this.started && !this.crashed) {
this.playingIntro = true;
this.tRex.playingIntro = true;
var keyframes = '@-webkit-keyframes intro { ' +
'from { width:' + Trex.config.WIDTH + 'px }' +
'to { width: ' + this.dimensions.WIDTH + 'px }' +
'}';
document.styleSheets.insertRule(keyframes, 0);
this.containerEl = document.getElementById('runner-container');
this.containerEl.addEventListener('webkitAnimationEnd',
this.startGame.bind(this));
this.containerEl.style.webkitAnimation = 'intro .4s ease-out 1 both';
this.containerEl.style.width = this.dimensions.WIDTH + 'px';
this.activated = true;
this.started = true;
} else if (this.crashed) {
this.restart();
}
},
startGame: function () {
this.runningTime = 0;
this.playingIntro = false;
this.tRex.playingIntro = false;
this.containerEl.style.webkitAnimation = '';
this.playCount++;
document.addEventListener('visibilitychange', this.onVisibilityChange.bind(this));
window.addEventListener('blur', this.onVisibilityChange.bind(this));
window.addEventListener('focus', this.onVisibilityChange.bind(this));
},
clearCanvas: function () {
this.ctx.clearRect(0, 0, this.dimensions.WIDTH, this.dimensions.HEIGHT);
},
//todo
update: function () {
this.drawPending = false;
var now = getTimeStamp();
var deltaTime = now - (this.time || now);
this.time = now;
if (this.activated) {
this.clearCanvas();
if (this.tRex.jumping) {
this.tRex.updateJump(deltaTime);
}
this.runningTime += deltaTime;
var hasObstacles = this.runningTime > this.config.CLEAR_TIME;
//如果是第一次跳跃并且没有播放开场动画，则播放开场动画
if (this.tRex.jumpCount == 1 && !this.playingIntro) {
this.playIntro();
}
if (this.playingIntro) {
this.horizon.update(0, this.currentSpeed, hasObstacles);
} else {
deltaTime = !this.started ? 0 : deltaTime;
this.horizon.update(deltaTime, this.currentSpeed, hasObstacles,
this.inverted);
}
var collision = hasObstacles &&
checkForCollision(this.horizon.obstacles, this.tRex);
if (!collision) {
this.distanceRan += this.currentSpeed * deltaTime / this.msPerFrame;
if (this.currentSpeed < this.config.MAX_SPEED) {
this.currentSpeed += this.config.ACCELERATION;
}
} else {
this.gameOver();
}
var playAchievementSound = this.distanceMeter.update(deltaTime,
Math.ceil(this.distanceRan));
if (playAchievementSound) {
this.playSound(this.soundFx.SCORE);
}
//若夜晚持续时间大于设定值则变为白天
if (this.invertTimer > this.config.INVERT_FADE_DURATION) {
this.invertTimer = 0;
this.invertTrigger = false;
this.invert();
} else if (this.invertTimer) {
this.invertTimer += deltaTime;
} else {
var actualDistance =
this.distanceMeter.getActualDistance(Math.ceil(this.distanceRan));
if (actualDistance > 0) {
this.invertTrigger = !(actualDistance %
this.config.INVERT_DISTANCE);
if (this.invertTrigger && this.invertTimer === 0) {
this.invertTimer += deltaTime;
this.invert();
}
}
}
}
if (!this.crashed) {
this.tRex.update(deltaTime);
this.raq();
}
},
handleEvent: function (e) {
return (function (evtType, events) {
switch (evtType) {
case events.KEYDOWN:
case events.TOUCHSTART:
case events.MOUSEDOWN:
this.onKeyDown(e);
break;
case events.KEYUP:
case events.TOUCHEND:
case events.MOUSEUP:
this.onKeyUp(e);
break;
}
}.bind(this))(e.type, Runner.events);
},
startListening: function () {
document.addEventListener(Runner.events.KEYDOWN, this);
document.addEventListener(Runner.events.KEYUP, this);
document.addEventListener(Runner.events.MOUSEDOWN, this);
document.addEventListener(Runner.events.MOUSEUP, this);
},
stopListening: function () {
document.removeEventListener(Runner.events.KEYDOWN, this);
document.removeEventListener(Runner.events.KEYUP, this);
document.removeEventListener(Runner.events.MOUSEDOWN, this);
document.removeEventListener(Runner.events.MOUSEUP, this);
},
onKeyDown: function (e) {
if (e.target != this.detailsButton) {
if (!this.crashed && Runner.keycodes.JUMP) {
e.preventDefault();
if (!this.activated) {
this.loadSounds();
this.activated = true;
}
if (!this.tRex.jumping && !this.tRex.ducking) {
this.tRex.startJump(this.currentSpeed);
}
}
}
if (this.activated && !this.crashed && Runner.keycodes.DUCK) {
e.preventDefault();
if (this.tRex.jumping) {
// Speed drop, activated only when jump key is not pressed.
this.tRex.setSpeedDrop();
} else if (!this.tRex.jumping && !this.tRex.ducking) {
// Duck.
this.tRex.setDuck(true);
}
}
},
onKeyUp: function (e) {
var keyCode = String(e.keyCode);
var isjumpKey = Runner.keycodes.JUMP ||
e.type == Runner.events.TOUCHEND ||
e.type == Runner.events.MOUSEDOWN;
if (this.isRunning() && isjumpKey) {
e.preventDefault();
this.tRex.endJump();
} else if (Runner.keycodes.DUCK) {
e.preventDefault();
this.tRex.speedDrop = false;
this.tRex.setDuck(false);
} else if (this.crashed) {
e.preventDefault();
// Check that enough time has elapsed before allowing jump key to restart.
var deltaTime = getTimeStamp() - this.time;
if (Runner.keycodes.RESTART || this.isLeftClickOnCanvas(e) ||
(deltaTime >= this.config.GAMEOVER_CLEAR_TIME &&
Runner.keycodes.JUMP)) {
e.preventDefault();
this.restart();
}
} else if (this.paused && isjumpKey) {
// Reset the jump state
e.preventDefault();
this.tRex.reset();
this.play();
}
},
isLeftClickOnCanvas: function (e) {
return e.button != null && e.button < 2 &&
e.type == Runner.events.MOUSEUP && e.target == this.canvas;
},
raq: function () {
if (!this.drawPending) {
this.drawPending = true;
this.raqId = requestAnimationFrame(this.update.bind(this));
}
},
isRunning: function () {
return !!this.raqId;
},
gameOver: function () {
this.playSound(this.soundFx.HIT);
//vibrate(200);
this.stop();
this.crashed = true;
this.distanceMeter.acheivement = false;
this.tRex.update(100, Trex.status.CRASHED);
// Game over panel.
if (!this.gameOverPanel) {
this.gameOverPanel = new GameOverPanel(this.canvas,
this.spriteDef.TEXT_SPRITE, this.spriteDef.RESTART,
this.dimensions);
} else {
this.gameOverPanel.draw();
}
// Update the high score.
if (this.distanceRan > this.highestScore) {
this.highestScore = Math.ceil(this.distanceRan);
this.distanceMeter.setHighScore(this.highestScore);
}
// Reset the time clock.
this.time = getTimeStamp();
},
stop: function () {
this.activated = false;
this.paused = true;
cancelAnimationFrame(this.raqId);
this.raqId = 0;
},
play: function () {
if (!this.crashed) {
this.activated = true;
this.paused = false;
this.tRex.update(0, Trex.status.RUNNING);
this.time = getTimeStamp();
this.update();
}
},
restart: function () {
if (!this.raqId) {
this.playCount++;
this.runningTime = 0;
this.activated = true;
this.crashed = false;
this.distanceRan = 0;
this.setSpeed(this.config.SPEED);
this.time = getTimeStamp();
this.containerEl.classList.remove(Runner.classes.CRASHED);
this.clearCanvas();
this.distanceMeter.reset(this.highestScore);
this.horizon.reset();
this.tRex.reset();
this.playSound(this.soundFx.BUTTON_PRESS);
this.invert(true);
this.update();
}
},
onVisibilityChange: function (e) {
if (document.hidden || document.webkitHidden || e.type == 'blur' ||
document.visibilityState != 'visible') {
this.stop();
} else if (!this.crashed) {
this.tRex.reset();
this.play();
}
},
playSound: function (soundBuffer) {
if (soundBuffer) {
var sourceNode = this.audioContext.createBufferSource();
sourceNode.buffer = soundBuffer;
sourceNode.connect(this.audioContext.destination);
sourceNode.start(0);
}
},
invert: function (reset) {
if (reset) {
a.classList.toggle(Runner.classes.INVERTED, this.invertTrigger);
//document.body.classList.toggle(Runner.classes.INVERTED,false);
this.invertTimer = 0;
this.inverted = false;
} else {
this.inverted = a.classList.toggle(Runner.classes.INVERTED, this.invertTrigger);
//this.inverted = document.body.classList.toggle(Runner.classes.INVERTED,this.invertTrigger);
}
}
};
window['Runner'] = Runner;
function decodeBase64ToArrayBuffer(base64String) {
var len = (base64String.length / 4) * 3;
var str = atob(base64String);
var arrayBuffer = new ArrayBuffer(len);
var bytes = new Uint8Array(arrayBuffer);
for (var i = 0; i < len; i++) {
bytes = str.charCodeAt(i);
}
return bytes.buffer;
}
GameOverPanel.dimensions = {
TEXT_X: 0,
TEXT_Y: 13,
TEXT_WIDTH: 191,
TEXT_HEIGHT: 11,
RESTART_WIDTH: 36,
RESTART_HEIGHT: 32
};
function GameOverPanel(canvas, textImgPos, restartImgPos, dimensions) {
this.canvas = canvas;
this.ctx = canvas.getContext('2d');
this.canvasDimensions = dimensions;
this.textImgPos = textImgPos;
this.restartImgPos = restartImgPos;
this.draw();
}
GameOverPanel.prototype = {
/**
* Update the panel dimensions.
* @param {number} width New canvas width.
* @param {number} opt_height Optional new canvas height.
*/
updateDimensions: function (width, opt_height) {
this.canvasDimensions.WIDTH = width;
if (opt_height) {
this.canvasDimensions.HEIGHT = opt_height;
}
},
/**
* Draw the panel.
*/
draw: function () {
var dimensions = GameOverPanel.dimensions;
var centerX = this.canvasDimensions.WIDTH / 2;
// Game over text.
var textSourceX = dimensions.TEXT_X;
var textSourceY = dimensions.TEXT_Y;
var textSourceWidth = dimensions.TEXT_WIDTH;
var textSourceHeight = dimensions.TEXT_HEIGHT;
var textTargetX = Math.round(centerX - (dimensions.TEXT_WIDTH / 2));
var textTargetY = Math.round((this.canvasDimensions.HEIGHT - 25) / 3);
var textTargetWidth = dimensions.TEXT_WIDTH;
var textTargetHeight = dimensions.TEXT_HEIGHT;
var restartSourceWidth = dimensions.RESTART_WIDTH;
var restartSourceHeight = dimensions.RESTART_HEIGHT;
var restartTargetX = centerX - (dimensions.RESTART_WIDTH / 2);
var restartTargetY = this.canvasDimensions.HEIGHT / 2;
textSourceX += this.textImgPos.x;
textSourceY += this.textImgPos.y;
// Game over text from sprite.
this.ctx.drawImage(imgSprite,
textSourceX, textSourceY, textSourceWidth, textSourceHeight,
textTargetX, textTargetY, textTargetWidth, textTargetHeight);
// Restart button.
this.ctx.drawImage(imgSprite,
this.restartImgPos.x, this.restartImgPos.y,
restartSourceWidth, restartSourceHeight,
restartTargetX, restartTargetY, dimensions.RESTART_WIDTH,
dimensions.RESTART_HEIGHT);
}
};
//地面
function HorizonLine(canvas, spritePos) {
this.spritePos = spritePos;
this.canvas = canvas;
this.ctx = canvas.getContext("2d");
this.sourceDimensions = {};
this.dimensions = HorizonLine.dimensions;
this.sourceXPos = ;
this.xPos = [];
this.yPos = 0;
this.bumpThreshold = 0.5; //地形系数
this.setSourceDimesions();
this.draw();
}
HorizonLine.dimensions = {
WIDTH: 600, //宽600
HEIGHT: 12, //高12像素
YPOS: 127 //在画布中的位置
};
HorizonLine.prototype = {
setSourceDimesions: function () {
for (var dimension in HorizonLine.dimensions) {
this.sourceDimensions = HorizonLine.dimensions;
this.dimensions = HorizonLine.dimensions;
}
//地面在画布上的位置
this.xPos = ;//0,600
this.yPos = HorizonLine.dimensions.YPOS;
},
//随机地形
getRandomType: function () {
return Math.random() > this.bumpThreshold ? this.dimensions.WIDTH : 0;
},
draw: function () {
this.ctx.drawImage(imgSprite,
this.sourceXPos, this.spritePos.y,
this.sourceDimensions.WIDTH, this.sourceDimensions.HEIGHT,
this.xPos, this.yPos,
this.dimensions.WIDTH, this.dimensions.HEIGHT);
this.ctx.drawImage(imgSprite,
this.sourceXPos, this.spritePos.y,
this.sourceDimensions.WIDTH, this.sourceDimensions.HEIGHT,
this.xPos, this.yPos,
this.dimensions.WIDTH, this.dimensions.HEIGHT);
},
updateXPos: function (pos, increment) {
var line1 = pos,
line2 = pos === 0 ? 1 : 0;
this.xPos -= increment;
this.xPos = this.xPos + this.dimensions.WIDTH;
if (this.xPos <= -this.dimensions.WIDTH) {
this.xPos += this.dimensions.WIDTH * 2;
this.xPos = this.xPos - this.dimensions.WIDTH;
this.sourceXPos = this.getRandomType() + this.spritePos.x;
}
},
update: function (deltaTime, speed) {
var increment = Math.floor(speed * (FPS / 1000) * deltaTime);
if (this.xPos <= 0) {
this.updateXPos(0, increment);
} else {
this.updateXPos(1, increment);
}
this.draw();
},
reset: function () {
this.xPos = 0;
this.xPos = HorizonLine.dimensions.WIDTH;
}
};
//云
Cloud.config = {
HEIGHT: 14,
MAX_CLOUD_GAP: 400,
MAX_SKY_LEVEL: 30,
MIN_CLOUD_GAP: 100,
MIN_SKY_LEVEL: 71,
WIDTH: 46
};
function getRandomNum(min, max) {
return Math.floor(Math.random() * (max - min + 1)) + min;
}
function getTimeStamp() {
return performance.now();
}
function Cloud(canvas, spritePos, containerWidth) {
this.canvas = canvas;
this.ctx = canvas.getContext("2d");
this.spritePos = spritePos;
this.containerWidth = containerWidth;
this.xPos = containerWidth;
this.yPos = 0;
this.remove = false;
//云间隙
this.cloudGap = getRandomNum(Cloud.config.MIN_CLOUD_GAP, Cloud.config.MAX_CLOUD_GAP);
this.init();
}
Cloud.prototype = {
init: function () {
//云的高度随机
this.yPos = getRandomNum(Cloud.config.MAX_SKY_LEVEL, Cloud.config.MIN_SKY_LEVEL);
this.draw();
},
draw: function () {
this.ctx.save();
var sourceWidth = Cloud.config.WIDTH,
sourceHeight = Cloud.config.HEIGHT;
this.ctx.drawImage(imgSprite,
this.spritePos.x, this.spritePos.y,
sourceWidth, sourceHeight,
this.xPos, this.yPos,
sourceWidth, sourceHeight);
this.ctx.restore();
},
update: function (speed) {
if (!this.remove) {
//向左移动
this.xPos -= Math.ceil(speed);
this.draw();
if (!this.isVisible()) {
this.remove = true;
}
}
},
//判断是否移出屏幕外
isVisible: function () {
return this.xPos + Cloud.config.WIDTH > 0;
}
};
//夜晚
//todo
NightMode.config = {
FADE_SPEED: 0.035, //淡入淡出速度
HEIGHT: 40, //月亮高度
MOON_SPEED: 0.25, //月亮移动速度
NUM_STARS: 2, //星星数量
STAR_SIZE: 9, //星星宽度
STAR_SPEED: 0.3,//星星速度
STAR_MAX_Y: 70, //星星在画布上出现的位置
WIDTH: 20 //半个月度宽度
};
NightMode.phases = ;
function NightMode(canvas, spritePos, containerWidth) {
this.spritePos = spritePos;
this.canvas = canvas;
this.ctx = canvas.getContext("2d");
this.containerWidth = containerWidth;
this.xPos = containerWidth - 50; //月亮的x坐标
this.yPos = 30; //月亮的y坐标
this.currentPhase = 0;
this.opacity = 0;
this.stars = []; //用于存储星星
this.drawStars = false;
this.placeStars(); //放置星星
}
NightMode.prototype = {
update: function (activated) {
if (activated && this.opacity == 0) {
this.currentPhase++;
if (this.currentPhase >= NightMode.phases.length) {
this.currentPhase = 0;
}
}
//淡入淡出
if (activated && (this.opacity < 1 || this.opacity == 0)) {
this.opacity += NightMode.config.FADE_SPEED;
} else if (this.opacity > 0) {
this.opacity -= NightMode.config.FADE_SPEED;
}
//移动月亮
if (this.opacity > 0) {
this.xPos = this.updateXPos(this.xPos, NightMode.config.MOON_SPEED);
//移动星星
if (this.drawStars) {
for (var i = 0; i < NightMode.config.NUM_STARS; i++) {
this.stars.x = this.updateXPos(this.stars.x, NightMode.config.STAR_SPEED);
}
}
this.draw();
} else {
this.opacity = 0;
this.placeStars();
}
this.drawStars = true;
},
updateXPos: function (currentPos, speed) {
if (currentPos < -NightMode.config.WIDTH) {
currentPos = this.containerWidth;
} else {
currentPos -= speed;
}
return currentPos;
},
draw: function () {
var moonSourceWidth = this.currentPhase == 3 ? NightMode.config.WIDTH * 2 :
NightMode.config.WIDTH;
var moonSourceHeight = NightMode.config.HEIGHT;
var moonSourceX = this.spritePos.x + NightMode.phases;
var moonOutputWidth = moonSourceWidth;
var starSize = NightMode.config.STAR_SIZE;
var starSourceX = spriteDefinition.STAR.x;
this.ctx.save();
this.ctx.globalAlpha = this.opacity;
if (this.drawStars) {
for (var i = 0; i < NightMode.config.NUM_STARS; i++) {
this.ctx.drawImage(imgSprite,
starSourceX, this.stars.sourceY,
starSize, starSize,
Math.round(this.stars.x), this.stars.y,
NightMode.config.STAR_SIZE, NightMode.config.STAR_SIZE);
}
}
this.ctx.drawImage(imgSprite,
moonSourceX, this.spritePos.y,
moonSourceWidth, moonSourceHeight,
Math.round(this.xPos), this.yPos,
moonOutputWidth, NightMode.config.HEIGHT);
this.ctx.globalAlpha = 1;
this.ctx.restore();
},
placeStars: function () {
var segmentSize = Math.round(this.containerWidth / NightMode.config.NUM_STARS);
for (var i = 0; i < NightMode.config.NUM_STARS; i++) {
this.stars = {};
this.stars.x = getRandomNum(segmentSize * i, segmentSize * (i + 1));
this.stars.y = getRandomNum(0, NightMode.config.STAR_MAX_Y);
this.stars.sourceY = spriteDefinition.STAR.y + NightMode.config.STAR_SIZE * i;
}
},
reset: function () {
this.currentPhase = 0;
this.opacity = 0;
this.update(false);
}
};
Horizon.config = {
BG_CLOUD_SPEED: 0.2,
BUMPY_THRESHOLD: .3,
CLOUD_FREQUENCY: .5,
HORIZON_HEIGHT: 16,
MAX_CLOUDS: 6
};
//地形
function Horizon(canvas, spritePos, dimensions, gapCoefficient) {
this.canvas = canvas;
this.ctx = canvas.getContext("2d");
this.config = Horizon.config;
this.dimensions = dimensions;
this.gapCoefficient = gapCoefficient;
//障碍物列表
this.obstacles = [];
this.obstacleHistory = [];
this.horizonOffsets = ;
this.cloudFrequency = this.config.CLOUD_FREQUENCY;
this.spritePos = spritePos;
this.nightMode = null;
//云
this.clouds = [];
this.cloudSpeed = this.config.BG_CLOUD_SPEED;
//地面
this.horizonLine = null;
this.init();
}
Horizon.prototype = {
//初始化地平面，云
init: function () {
this.addCloud();
this.horizonLine = new HorizonLine(this.canvas, this.spritePos.HORIZON);
this.nightMode = new NightMode(this.canvas, this.spritePos.MOON, this.dimensions.WIDTH);
},
update: function (deltaTime, currentSpeed, updateObstacles, showNightMode) {
this.runningTime += deltaTime;
this.horizonLine.update(deltaTime, currentSpeed);
this.nightMode.update(showNightMode);
this.updateClouds(deltaTime, currentSpeed);
if (updateObstacles) {
this.updateObstacles(deltaTime, currentSpeed);
}
},
updateClouds: function (deltaTime, speed) {
var cloudSpeed = this.cloudSpeed / 1000 * deltaTime * speed;
var numClouds = this.clouds.length;
if (numClouds) {
for (var i = numClouds - 1; i >= 0; i--) {
this.clouds.update(cloudSpeed);
}
var lastCloud = this.clouds;
if (numClouds < this.config.MAX_CLOUDS &&
(this.dimensions.WIDTH - lastCloud.xPos) > lastCloud.cloudGap &&
this.cloudFrequency > Math.random()) {
this.addCloud();
}
this.clouds = this.clouds.filter(function (obj) {
return !obj.remove;
});
} else {
this.addCloud();
}
},
updateObstacles: function (deltaTime, currentSpeed) {
// Obstacles, move to Horizon layer.
var updatedObstacles = this.obstacles.slice(0);
for (var i = 0; i < this.obstacles.length; i++) {
var obstacle = this.obstacles;
obstacle.update(deltaTime, currentSpeed);
// Clean up existing obstacles.
if (obstacle.remove) {
updatedObstacles.shift();
}
}
this.obstacles = updatedObstacles;
if (this.obstacles.length > 0) {
var lastObstacle = this.obstacles;
if (lastObstacle && !lastObstacle.followingObstacleCreated &&
lastObstacle.isVisible() &&
(lastObstacle.xPos + lastObstacle.width + lastObstacle.gap) <
this.dimensions.WIDTH) {
this.addNewObstacle(currentSpeed);
lastObstacle.followingObstacleCreated = true;
}
} else {
// Create new obstacles.
this.addNewObstacle(currentSpeed);
}
},
removeFirstObstacle: function () {
this.obstacles.shift();
},
addNewObstacle: function (currentSpeed) {
var obstacleTypeIndex = getRandomNum(0, Obstacle.types.length - 1);
var obstacleType = Obstacle.types;
if (this.duplicateObstacleCheck(obstacleType.type) || currentSpeed < obstacleType.minSpeed) {
this.addNewObstacle(currentSpeed);
} else {
var obstacleSpritePos = this.spritePos;
this.obstacles.push(new Obstacle(this.ctx, obstacleType, obstacleSpritePos, this.dimensions,
this.gapCoefficient, currentSpeed, obstacleType.width));
this.obstacleHistory.unshift(obstacleType.type);
}
if (this.obstacleHistory.length > 1) {
this.obstacleHistory.splice(Runner.config.MAX_OBSTACLE_DUPLICATION);
}
},
duplicateObstacleCheck: function (nextObstacleType) {
var duplicateCount = 0;
for (var i = 0; i < this.obstacleHistory.length; i++) {
duplicateCount = this.obstacleHistory == nextObstacleType ? duplicateCount + 1 : 0;
}
return duplicateCount >= Runner.config.MAX_OBSTACLE_DUPLICATION;
},
reset: function () {
this.obstacles = [];
this.horizonLine.reset();
this.nightMode.reset();
},
resize: function (width, height) {
this.canvas.width = width;
this.canvas.height = height;
},
addCloud: function () {
this.clouds.push(new Cloud(this.canvas, this.spritePos.CLOUD, this.dimensions.WIDTH));
}
};
Obstacle.MAX_GAP_COEFFICIENT = 1.5;
Obstacle.MAX_OBSTACLE_LENGTH = 3;
Obstacle.types = [
{
type: 'CACTUS_SMALL',
width: 17,
height: 35,
yPos: 105,
multipleSpeed: 4,
minGap: 120,
minSpeed: 0,
collisionBoxes: [
new CollisionBox(0, 7, 5, 27),
new CollisionBox(4, 0, 6, 34),
new CollisionBox(10, 4, 7, 14)
]
},
{
type: 'CACTUS_LARGE',
width: 25,
height: 50,
yPos: 90,
multipleSpeed: 7,
minGap: 120,
minSpeed: 0,
collisionBoxes: [
new CollisionBox(0, 12, 7, 38),
new CollisionBox(8, 0, 7, 49),
new CollisionBox(13, 10, 10, 38)
]
},
{
type: 'PTERODACTYL',
width: 46,
height: 40,
yPos: , // Variable height. 高、中、低三种高度
yPosMobile: , // Variable height mobile.
multipleSpeed: 999,
minSpeed: 8.5,
minGap: 150,
collisionBoxes: [
new CollisionBox(15, 15, 16, 5),
new CollisionBox(18, 21, 24, 6),
new CollisionBox(2, 14, 4, 3),
new CollisionBox(6, 10, 4, 7),
new CollisionBox(10, 8, 6, 9)
],
numFrames: 2,
frameRate: 1000 / 6,
speedOffset: .8
}
];
function Obstacle(ctx, type, spriteImgPos, dimensions, gapCoefficient, speed, opt_xOffset) {
this.ctx = ctx;
this.spritePos = spriteImgPos;
//障碍物类型(仙人掌、翼龙)
this.typeConfig = type;
this.gapCoefficient = gapCoefficient;
this.size = getRandomNum(1, Obstacle.MAX_OBSTACLE_LENGTH);
this.dimensions = dimensions;
this.remove = false;
this.xPos = dimensions.WIDTH + (opt_xOffset || 0);
this.yPos = 0;
this.width = 0;
this.collisionBoxes = [];
this.gap = 0;
this.speedOffset = 0;
// For animated obstacles.
this.currentFrame = 0;
this.timer = 0;
this.init(speed);
}
Obstacle.prototype = {
init: function (speed) {
this.cloneCollisionBoxes();
//若multipleSpeed大于移动速度，则只出现一个障碍物
if (this.size > 1 && this.typeConfig.multipleSpeed > speed) {
this.size = 1;
}
this.width = this.typeConfig.width * this.size;
if (Array.isArray(this.typeConfig.yPos)) {
var yPosConfig = this.typeConfig.yPos;
this.yPos = yPosConfig;
} else {
this.yPos = this.typeConfig.yPos;
}
this.draw();
if (this.size > 1) {
this.collisionBoxes.width = this.width - this.collisionBoxes.width -
this.collisionBoxes.width;
this.collisionBoxes.x = this.width - this.collisionBoxes.width;
}
if (this.typeConfig.speedOffset) {
this.speedOffset = Math.random() > 0.5 ? this.typeConfig.speedOffset :
-this.typeConfig.speedOffset;
}
this.gap = this.getGap(this.gapCoefficient, speed);
},
draw: function () {
var sourceWidth = this.typeConfig.width;
var sourceHeight = this.typeConfig.height;
var sourceX = (sourceWidth * this.size) * (0.5 * (this.size - 1)) +
this.spritePos.x;
// Animation frames.
if (this.currentFrame > 0) {
sourceX += sourceWidth * this.currentFrame;
}
this.ctx.drawImage(imgSprite,
sourceX, this.spritePos.y,
sourceWidth * this.size, sourceHeight,
this.xPos, this.yPos,
sourceWidth * this.size, sourceHeight);
},
update: function (deltaTime, speed) {
if (!this.remove) {
if (this.typeConfig.speedOffset) {
speed += this.speedOffset;
}
this.xPos -= Math.floor((speed * FPS / 1000) * deltaTime);
// Update frame
if (this.typeConfig.numFrames) {
this.timer += deltaTime;
if (this.timer >= this.typeConfig.frameRate) {
this.currentFrame = this.currentFrame == this.typeConfig.numFrames - 1 ? 0 : this.currentFrame + 1;
this.timer = 0;
}
}
this.draw();
if (!this.isVisible()) {
this.remove = true;
}
}
},
getGap: function (gapCoefficient, speed) {
var minGap = Math.round(this.width * speed +
this.typeConfig.minGap * gapCoefficient);
var maxGap = Math.round(minGap * Obstacle.MAX_GAP_COEFFICIENT);
return getRandomNum(minGap, maxGap);
},
isVisible: function () {
return this.xPos + this.width > 0;
},
cloneCollisionBoxes: function () {
var collisionBoxes = this.typeConfig.collisionBoxes;
for (var i = collisionBoxes.length - 1; i >= 0; i--) {
this.collisionBoxes = new CollisionBox(collisionBoxes.x,
collisionBoxes.y, collisionBoxes.width,
collisionBoxes.height);
}
}
};
DistanceMeter.dimensions = {
WIDTH: 10,
HEIGHT: 13,
DEST_WIDTH: 11
};
DistanceMeter.yPos = ;
DistanceMeter.config = {
// Number of digits.
MAX_DISTANCE_UNITS: 5,
// Distance that causes achievement animation.
ACHIEVEMENT_DISTANCE: 100,
// Used for conversion from pixel distance to a scaled unit.
COEFFICIENT: 0.025,
// Flash duration in milliseconds.
FLASH_DURATION: 1000 / 4,
// Flash iterations for achievement animation.
FLASH_ITERATIONS: 3
};
function DistanceMeter(canvas, spritePos, canvasWidth) {
this.canvas = canvas;
this.ctx = canvas.getContext('2d');
this.image = imgSprite;
this.spritePos = spritePos;
this.x = 0;
this.y = 5;
this.currentDistance = 0;
this.maxScore = 0;
this.highScore = 0;
this.container = null;
this.digits = [];
this.acheivement = false;
this.defaultString = '';
this.flashTimer = 0;
this.flashIterations = 0;
this.invertTrigger = false;
this.config = DistanceMeter.config;
this.maxScoreUnits = this.config.MAX_DISTANCE_UNITS;
this.init(canvasWidth);
}
DistanceMeter.prototype = {
init: function (width) {
var maxDistanceStr = '';
this.calcXPos(width);
this.maxScore = this.maxScoreUnits;
for (var i = 0; i < this.maxScoreUnits; i++) {
this.draw(i, 0);
this.defaultString += '0';
maxDistanceStr += '9';
}
this.maxScore = parseInt(maxDistanceStr);
},
calcXPos: function (canvasWidth) {
this.x = canvasWidth - (DistanceMeter.dimensions.DEST_WIDTH *
(this.maxScoreUnits + 1));
},
draw: function (digitPos, value, opt_highScore) {
var sourceWidth = DistanceMeter.dimensions.WIDTH;
var sourceHeight = DistanceMeter.dimensions.HEIGHT;
var sourceX = DistanceMeter.dimensions.WIDTH * value;
var sourceY = 0;
var targetX = digitPos * DistanceMeter.dimensions.DEST_WIDTH;
var targetY = this.y;
var targetWidth = DistanceMeter.dimensions.WIDTH;
var targetHeight = DistanceMeter.dimensions.HEIGHT;
sourceX += this.spritePos.x;
sourceY += this.spritePos.y;
this.ctx.save();
if (opt_highScore) {
// Left of the current score.
var highScoreX = this.x - (this.maxScoreUnits * 2) *
DistanceMeter.dimensions.WIDTH;
this.ctx.translate(highScoreX, this.y);
} else {
this.ctx.translate(this.x, this.y);
}
this.ctx.drawImage(this.image, sourceX, sourceY,
sourceWidth, sourceHeight,
targetX, targetY,
targetWidth, targetHeight
);
this.ctx.restore();
},
getActualDistance: function (distance) {
return distance ? Math.round(distance * this.config.COEFFICIENT) : 0;
},
update: function (deltaTime, distance) {
var paint = true;
var playSound = false;
if (!this.acheivement) {
distance = this.getActualDistance(distance);
// Score has gone beyond the initial digit count.
if (distance > this.maxScore && this.maxScoreUnits == this.config.MAX_DISTANCE_UNITS) {
this.maxScoreUnits++;
this.maxScore = parseInt(this.maxScore + '9');
} else {
this.distance = 0;
}
if (distance > 0) {
// Acheivement unlocked
if (distance % this.config.ACHIEVEMENT_DISTANCE == 0) {
// Flash score and play sound.
this.acheivement = true;
this.flashTimer = 0;
playSound = true;
}
// Create a string representation of the distance with leading 0.
var distanceStr = (this.defaultString +
distance).substr(-this.maxScoreUnits);
this.digits = distanceStr.split('');
} else {
this.digits = this.defaultString.split('');
}
} else {
// Control flashing of the score on reaching acheivement.
if (this.flashIterations <= this.config.FLASH_ITERATIONS) {
this.flashTimer += deltaTime;
if (this.flashTimer < this.config.FLASH_DURATION) {
paint = false;
} else if (this.flashTimer >
this.config.FLASH_DURATION * 2) {
this.flashTimer = 0;
this.flashIterations++;
}
} else {
this.acheivement = false;
this.flashIterations = 0;
this.flashTimer = 0;
}
}
// Draw the digits if not flashing.
if (paint) {
for (var i = this.digits.length - 1; i >= 0; i--) {
this.draw(i, parseInt(this.digits));
}
}
this.drawHighScore();
return playSound;
},
drawHighScore: function () {
this.ctx.save();
this.ctx.globalAlpha = .8;
for (var i = this.highScore.length - 1; i >= 0; i--) {
this.draw(i, parseInt(this.highScore, 10), true);
}
this.ctx.restore();
},
setHighScore: function (distance) {
distance = this.getActualDistance(distance);
var highScoreStr = (this.defaultString +
distance).substr(-this.maxScoreUnits);
this.highScore = ['10', '11', ''].concat(highScoreStr.split(''));
},
reset: function () {
this.update(0);
this.acheivement = false;
}
};
/**
* 碰撞检测盒子
* @param x {number} x坐标
* @param y {number} y坐标
* @param w {number} 宽度
* @param h {number} 高度
*/
function CollisionBox(x, y, w, h) {
this.x = x;
this.y = y;
this.width = w;
this.height = h;
}
function checkForCollision(obstacle, tRex, opt_canvasCtx) {
var obstacleBoxXPos = Runner.defaultDimensions.WIDTH + obstacle.xPos;
var tRexBox = new CollisionBox(
tRex.xPos + 1,
tRex.yPos + 1,
tRex.config.WIDTH - 2,
tRex.config.HEIGHT - 2);
var obstacleBox = new CollisionBox(
obstacle.xPos + 1,
obstacle.yPos + 1,
obstacle.typeConfig.width * obstacle.size - 2,
obstacle.typeConfig.height - 2);
if (opt_canvasCtx) {
drawCollisionBoxes(opt_canvasCtx, tRexBox, obstacleBox);
}
if (boxCompare(tRexBox, obstacleBox)) {
var collisionBoxes = obstacle.collisionBoxes;
var tRexCollisionBoxes = tRex.ducking ?
Trex.collisionBoxes.DUCKING : Trex.collisionBoxes.RUNNING;
for (var t = 0; t < tRexCollisionBoxes.length; t++) {
for (var i = 0; i < collisionBoxes.length; i++) {
// Adjust the box to actual positions.
var adjTrexBox =
createAdjustedCollisionBox(tRexCollisionBoxes, tRexBox);
var adjObstacleBox =
createAdjustedCollisionBox(collisionBoxes, obstacleBox);
var crashed = boxCompare(adjTrexBox, adjObstacleBox);
// Draw boxes for debug.
if (opt_canvasCtx) {
drawCollisionBoxes(opt_canvasCtx, adjTrexBox, adjObstacleBox);
}
if (crashed) {
return ;
}
}
}
}
return false;
}
function createAdjustedCollisionBox(box, adjustment) {
return new CollisionBox(
box.x + adjustment.x,
box.y + adjustment.y,
box.width,
box.height);
}
function boxCompare(tRexBox, obstacleBox) {
var crashed = false;
var tRexBoxX = tRexBox.x;
var tRexBoxY = tRexBox.y;
var obstacleBoxX = obstacleBox.x;
var obstacleBoxY = obstacleBox.y;
// Axis-Aligned Bounding Box method.
if (tRexBox.x < obstacleBoxX + obstacleBox.width &&
tRexBox.x + tRexBox.width > obstacleBoxX &&
tRexBox.y < obstacleBox.y + obstacleBox.height &&
tRexBox.height + tRexBox.y > obstacleBox.y) {
crashed = true;
}
return crashed;
}
function drawCollisionBoxes(canvasCtx, tRexBox, obstacleBox) {
canvasCtx.save();
canvasCtx.lineWidth = 0.5;
canvasCtx.strokeStyle = '#f00';
canvasCtx.strokeRect(tRexBox.x + 0.5, tRexBox.y + 0.5, tRexBox.width, tRexBox.height);
canvasCtx.strokeStyle = '#0f0';
canvasCtx.strokeRect(obstacleBox.x + 0.5, obstacleBox.y + 0.5,
obstacleBox.width, obstacleBox.height);
canvasCtx.restore();
}
Trex.config = {
DROP_VELOCITY: -5, //下落速度
GRAVITY: 0.6, //重力
HEIGHT: 47, //站立时高度
HEIGHT_DUCK: 25, //闪躲时高度
INIITAL_JUMP_VELOCITY: -10,//初始起跳速度
INTRO_DURATION: 1500,
MAX_JUMP_HEIGHT: 30, //最大起跳高度
MIN_JUMP_HEIGHT: 30, //最小起跳高度
SPEED_DROP_COEFFICIENT: 3,
SPRITE_WIDTH: 262, //雪碧图霸王龙部分的宽度(不包含闪避动作)
START_X_POS: 50, //在画布的起始位置
WIDTH: 44, //站立时宽度
WIDTH_DUCK: 59 //闪避时宽度
};
Trex.status = {
CRASHED: 'CRASHED', //碰到障碍物
DUCKING: 'DUCKING', //闪避
JUMPING: 'JUMPING', //跳跃
RUNNING: 'RUNNING', //跑动
WAITING: 'WAITING' //等待
};
Trex.BLINK_TIMING = 3000;
Trex.collisionBoxes = {
DUCKING: [
new CollisionBox(1, 18, 55, 25)
],
RUNNING: [
new CollisionBox(22, 0, 17, 16),
new CollisionBox(1, 18, 30, 9),
new CollisionBox(10, 35, 14, 8),
new CollisionBox(1, 24, 29, 5),
new CollisionBox(5, 30, 21, 4),
new CollisionBox(9, 34, 15, 4)
]
};
Trex.animFrames = {
WAITING: {
frames: ,
msPerFrame: 1000 / 3
},
RUNNING: {
frames: ,
msPerFrame: 1000 / 12
},
CRASHED: {
frames: ,
msPerFrame: 1000 / 60
},
JUMPING: {
frames: ,
msPerFrame: 1000 / 60
},
DUCKING: {
frames: ,
msPerFrame: 1000 / 8
}
};
function Trex(canvas, spritePos) {
this.canvas = canvas;
this.ctx = canvas.getContext('2d');
this.spritePos = spritePos;
this.xPos = 0;
this.yPos = 0;
//站立时的Y轴坐标
this.groundYPos = 0;
this.currentFrame = 0;
this.currentAnimFrames = [];
this.blinkDelay = 0;
this.animStartTime = 0;
this.timer = 0;
this.msPerFrame = 1000 / FPS;
this.config = Trex.config;
//当前的动作为等待状态
this.status = Trex.status.WAITING;
this.jumping = false; //是否跳跃
this.ducking = false; //是否闪避
this.jumpVelocity = 0;
this.reachedMinHeight = false;
this.speedDrop = false;
this.jumpCount = 0;
this.jumpspotX = 0; //空降着陆点
this.init();
}
Trex.prototype = {
init: function () {
this.blinkDelay = this.setBlinkDelay();
this.groundYPos = Runner.defaultDimensions.HEIGHT - this.config.HEIGHT -
Runner.config.BOTTOM_PAD;
this.yPos = this.groundYPos;
this.minJumpHeight = this.groundYPos - this.config.MIN_JUMP_HEIGHT;
this.draw(0, 0);
this.update(0, Trex.status.WAITING);
},
setJumpVelocity: function (setting) {
this.config.INIITAL_JUMP_VELOCITY = -setting;
this.config.DROP_VELOCITY = -setting / 2;
},
update: function (deltaTime, opt_status) {
this.timer += deltaTime;
if (opt_status) {
this.status = opt_status;
this.currentFrame = 0;
this.msPerFrame = Trex.animFrames.msPerFrame;
this.currentAnimFrames = Trex.animFrames.frames;
if (opt_status == Trex.status.WAITING) {
this.animStartTime = getTimeStamp();
this.setBlinkDelay();
}
}
if (this.playingIntro && this.xPos < this.config.START_X_POS) {
this.xPos += Math.round((this.config.START_X_POS /
this.config.INTRO_DURATION) * deltaTime);
}
if (this.status == Trex.status.WAITING) {
this.blink(getTimeStamp());
} else {
this.draw(this.currentAnimFrames, 0);
}
if (this.timer >= this.msPerFrame) {
this.currentFrame = this.currentFrame == this.currentAnimFrames.length - 1 ? 0 : this.currentFrame + 1;
this.timer = 0;
}
if (this.speedDrop && this.yPos == this.groundYPos) {
this.speedDrop = false;
this.setDuck(true);
}
},
setBlinkDelay: function () {
this.blinkDelay = Math.ceil(Math.random() * Trex.BLINK_TIMING);
},
blink: function (time) {
var deltaTime = time - this.animStartTime;
if (deltaTime >= this.blinkDelay) {
this.draw(this.currentAnimFrames, 0);
if (this.currentFrame == 1) {
// Set new random delay to blink.
this.setBlinkDelay();
this.animStartTime = time;
}
}
},
startJump: function (speed) {
if (!this.jumping) {
this.update(0, Trex.status.JUMPING);
this.jumpVelocity = this.config.INIITAL_JUMP_VELOCITY - (speed / 10);
this.jumping = true;
this.reachedMinHeight = false;
this.speedDrop = false;
}
},
endJump: function () {
if (this.reachedMinHeight && this.jumpVelocity < this.config.DROP_VELOCITY) {
this.jumpVelocity = this.config.DROP_VELOCITY;
}
},
updateJump: function (deltaTime, speed) {
var msPerFrame = Trex.animFrames.msPerFrame;
var framesElapsed = deltaTime / msPerFrame;
if (this.speedDrop) {
this.yPos += Math.round(this.jumpVelocity *
this.config.SPEED_DROP_COEFFICIENT * framesElapsed);
} else {
this.yPos += Math.round(this.jumpVelocity * framesElapsed);
}
this.jumpVelocity += this.config.GRAVITY * framesElapsed;
if (this.yPos < this.minJumpHeight || this.speedDrop) {
this.reachedMinHeight = true;
}
if (this.yPos < this.config.MAX_JUMP_HEIGHT || this.speedDrop) {
this.endJump();
}
if (this.yPos > this.groundYPos) {
this.reset();
this.jumpCount++;
}
this.update(deltaTime);
},
setSpeedDrop: function () {
this.speedDrop = true;
this.jumpVelocity = 1;
},
setDuck: function (isDucking) {
if (isDucking && this.status != Trex.status.DUCKING) {
this.update(0, Trex.status.DUCKING);
this.ducking = true;
} else if (this.status == Trex.status.DUCKING) {
this.update(0, Trex.status.RUNNING);
this.ducking = false;
}
},
draw: function (x, y) {
var sourceX = x;
var sourceY = y;
var sourceWidth = this.ducking && this.status != Trex.status.CRASHED ?
this.config.WIDTH_DUCK : this.config.WIDTH;
var sourceHeight = this.config.HEIGHT;
sourceX += this.spritePos.x;
sourceY += this.spritePos.y;
if (this.ducking && this.status != Trex.status.CRASHED) {
this.ctx.drawImage(imgSprite, sourceX, sourceY,
sourceWidth, sourceHeight,
this.xPos, this.yPos,
this.config.WIDTH_DUCK, this.config.HEIGHT);
} else {
if (this.ducking && this.status == Trex.status.CRASHED) {
this.xPos++;
}
this.ctx.drawImage(imgSprite, sourceX, sourceY,
sourceWidth, sourceHeight,
this.xPos, this.yPos,
this.config.WIDTH, this.config.HEIGHT);
}
},
reset: function () {
this.yPos = this.groundYPos;
this.jumpVelocity = 0;
this.jumping = false;
this.ducking = false;
this.update(0, Trex.status.RUNNING);
this.midair = false;
this.speedDrop = false;
this.jumpCount = 0;
}
};
var now = getTimeStamp();
//不写onload方法就显示不出图片
let runner;
window.onload = function () {
runner = new Runner('.interstitial-wrapper');
};
</script>
但需要补充图像和音效资源：<template id="audio-resources">
<audio id="offline-sound-press" src="data:audio/mpeg;base64,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"></audio>
<audio id="offline-sound-hit" 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alt="test"/>【训练模型】
1、添加分类数据
2、训练模型
3、下载模型
4、分析代码
<div>Teachable Machine Image Model - p5.js and ml5.js</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.9.0/p5.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.9.0/addons/p5.dom.min.js"></script>
<script src="https://unpkg.com/ml5@latest/dist/ml5.min.js"></script>
<script type="text/javascript">
// Classifier Variable
let classifier;
// Video
let video;
let flippedVideo;
// To store the classification
let label = "";
let confidence=0;
// Load the model first
function preload() {
classifier = ml5.imageClassifier('model.json');
}
function setup() {
createCanvas(320, 260);
// Create the video
video = createCapture(VIDEO);
video.size(320, 240);
video.hide();
flippedVideo = ml5.flipImage(video);
// Start classifying
classifyVideo();
}
function draw() {
background(0);
// Draw the video
image(flippedVideo, 0, 0);
// Draw the label
fill(255);
textSize(16);
textAlign(CENTER);
text(label, width / 2, height - 4);
}
// Get a prediction for the current video frame
function classifyVideo() {
flippedVideo = ml5.flipImage(video)
classifier.classify(flippedVideo, gotResult);
flippedVideo.remove();
}
// When we get a result
function gotResult(error, results) {
// If there is an error
if (error) {
console.error(error);
return;
}
// The results are in an array ordered by confidence.
// console.log(results);
这里的“model.json”就是加载的模型文件，可以使用网站上生成的地址，当然也可以保存下来放在自己的对象存储服务上。
classifier = ml5.imageClassifier('model.json');
这里能拿到实时获取的预测数据function gotResult(error, results) {
// If there is an error
if (error) {
console.error(error);
return;
}
// The results are in an array ordered by confidence.
// console.log(results);
confidence= results.confidence
label = results.label;
// Classifiy again!
classifyVideo();
}label为结果名称，confidence为结果可信度
【程序整合】
接来下就是结合谷Chrome断网小游戏的代码，步骤很简单，识别结果的名称为five（手掌）时，让小恐龙跳跃，为ten（拳头）时，让小恐龙蹲下，下面是具体代码：
let classifier;
// Model URL
// Video
let video;
let flippedVideo;
// To store the classification
let label = "";
let confidence=0;
let state;
// Load the model first
function preload() {
classifier = ml5.imageClassifier( 'model.json');
}
function setup() {
createCanvas(1200, 290);
// Create the video
video = createCapture(VIDEO);
video.size(320, 240);
video.hide();
flippedVideo = ml5.flipImage(video);
// Start classifying
classifyVideo();
}
function draw() {
background(255);
// Draw the video
image(flippedVideo, 480, 30);
// Draw the label
fill(0);
textSize(16);
textAlign(CENTER);
text(label, width / 2, height -4);
}
// Get a prediction for the current video frame
function classifyVideo() {
flippedVideo = ml5.flipImage(video)
classifier.classify(flippedVideo, gotResult);
flippedVideo.remove();
}
// When we get a result
function gotResult(error, results) {
// If there is an error
if (error) {
console.error(error);
return;
}
// The results are in an array ordered by confidence.
// console.log(results);
label = results.label;
confidence= results.confidence;
if(label=="ten" && confidence>0.8){
if(state =="up") {
console.log(state);
if (runner.tRex.jumping) {
// Speed drop, activated only when jump key is not pressed.
runner.tRex.setSpeedDrop();
} else if (!runner.tRex.jumping && !runner.tRex.ducking) {
// Duck.
runner.tRex.setDuck(true);
}
state = 'down';
}
}
if(label=="five" && confidence>0.8){
if(!state || label=="five") {
console.log(state);
runner.tRex.speedDrop = false;
runner.tRex.setDuck(false);
//Play sound effect and jump on starting the game for the first time.
if (!runner.tRex.jumping && !runner.tRex.ducking) {
runner.playSound(runner.soundFx.BUTTON_PRESS);
runner.tRex.startJump(runner.currentSpeed);
}
state = 'up';
}
}
// Classifiy again!
classifyVideo();
}【演示视频】
https://www.bilibili.com/video/BV1Kg411x7xc/?share_source=copy_web&vd_source=98855d5b99ff76982639c5ca6ff6f528
【完整代码文件】
页:
[1]