skipass.riservabianca.it

/g,_=/>/g,m=RegExp(`>|${d}(?:([^\\s"'>=/]+)(${d}*=${d}*(?:[^ \t\n\f\r"'\`<>=]|("|')|))|$)`,"g"),p=/'/g,g=/"/g,$=/^(?:script|style|textarea|title)$/i,y=t=>(i,...s)=>({_$litType$:t,strings:i,values:s}),x=y(1),w=Symbol.for("lit-noChange"),T=Symbol.for("lit-nothing"),A=new WeakMap,E=r$2.createTreeWalker(r$2,129);function C(t,i){if(!Array.isArray(t)||!t.hasOwnProperty("raw"))throw Error("invalid template strings array");return void 0!==s$2?s$2.createHTML(i):i}const P=(t,i)=>{const s=t.length-1,o=[];let r,l=2===i?"":"")),o]};class V{constructor({strings:t,_$litType$:s},n){let r;this.parts=[];let c=0,a=0;const u=t.length-1,d=this.parts,[f,v]=P(t,s);if(this.el=V.createElement(f,n),E.currentNode=this.el.content,2===s){const t=this.el.content.firstChild;t.replaceWith(...t.childNodes);}for(;null!==(r=E.nextNode())&&d.length0){r.textContent=i$1?i$1.emptyScript:"";for(let i=0;i2||""!==s[0]||""!==s[1]?(this._$AH=Array(s.length-1).fill(new String),this.strings=s):this._$AH=T;}_$AI(t,i=this,s,e){const h=this.strings;let o=!1;if(void 0===h)t=N(this,t,i,0),o=!c$1(t)||t!==this._$AH&&t!==w,o&&(this._$AH=t);else {const e=t;let n,r;for(t=h[0],n=0;n{const e=s?.renderBefore??i;let h=e._$litPart$;if(void 0===h){const t=s?.renderBefore??null;e._$litPart$=h=new M(i.insertBefore(l(),t),t,void 0,s??{});}return h._$AI(t),h /** * @license * Copyright 2017 Google LLC * SPDX-License-Identifier: BSD-3-Clause */};let s$1=class s extends b{constructor(){super(...arguments),this.renderOptions={host:this},this._$Do=void 0;}createRenderRoot(){const t=super.createRenderRoot();return this.renderOptions.renderBefore??=t.firstChild,t}update(t){const i=this.render();this.hasUpdated||(this.renderOptions.isConnected=this.isConnected),super.update(t),this._$Do=j(i,this.renderRoot,this.renderOptions);}connectedCallback(){super.connectedCallback(),this._$Do?.setConnected(!0);}disconnectedCallback(){super.disconnectedCallback(),this._$Do?.setConnected(!1);}render(){return w}};s$1._$litElement$=!0,s$1["finalized"]=!0,globalThis.litElementHydrateSupport?.({LitElement:s$1});const r$1=globalThis.litElementPolyfillSupport;r$1?.({LitElement:s$1});(globalThis.litElementVersions??=[]).push("4.0.2"); // Copyright 2023 The Chromium Authors // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. const HIDDEN_CLASS = 'hidden'; // Copyright 2024 The Chromium Authors // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. const IS_IOS = /CriOS/.test(window.navigator.userAgent); const IS_HIDPI = window.devicePixelRatio > 1; const IS_MOBILE = /Android/.test(window.navigator.userAgent) || IS_IOS; const IS_RTL = document.documentElement.dir === 'rtl'; /** * Frames per second. * @const */ const FPS = 60; // Copyright 2024 The Chromium Authors // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. /** * Get random number. * @param {number} min * @param {number} max */ function getRandomNum(min, max) { return Math.floor(Math.random() * (max - min + 1)) + min; } /** * Return the current timestamp. * @return {number} */ function getTimeStamp() { return IS_IOS ? new Date().getTime() : performance.now(); } // Copyright 2024 The Chromium Authors // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. class DistanceMeter { /** * Handles displaying the distance meter. * @param {!HTMLCanvasElement} canvas * @param {Object} spritePos Image position in sprite. * @param {number} canvasWidth */ constructor(canvas, spritePos, canvasWidth) { this.canvas = canvas; this.canvasCtx = /** @type {CanvasRenderingContext2D} */ (canvas.getContext('2d')); this.image = Runner.imageSprite; this.spritePos = spritePos; this.x = 0; this.y = 5; this.currentDistance = 0; this.maxScore = 0; this.highScore = '0'; this.container = null; this.digits = []; this.achievement = false; this.defaultString = ''; this.flashTimer = 0; this.flashIterations = 0; this.invertTrigger = false; this.flashingRafId = null; this.highScoreBounds = {}; this.highScoreFlashing = false; this.config = DistanceMeter.config; this.maxScoreUnits = this.config.MAX_DISTANCE_UNITS; this.canvasWidth = canvasWidth; this.init(canvasWidth); } /** * Initialise the distance meter to '00000'. * @param {number} width Canvas width in px. */ init(width) { let maxDistanceStr = ''; this.calcXPos(width); this.maxScore = this.maxScoreUnits; for (let i = 0; i < this.maxScoreUnits; i++) { this.draw(i, 0); this.defaultString += '0'; maxDistanceStr += '9'; } this.maxScore = parseInt(maxDistanceStr, 10); } /** * Calculate the xPos in the canvas. * @param {number} canvasWidth */ calcXPos(canvasWidth) { this.x = canvasWidth - (DistanceMeter.dimensions.DEST_WIDTH * (this.maxScoreUnits + 1)); } /** * Draw a digit to canvas. * @param {number} digitPos Position of the digit. * @param {number} value Digit value 0-9. * @param {boolean=} opt_highScore Whether drawing the high score. */ draw(digitPos, value, opt_highScore) { let sourceWidth = DistanceMeter.dimensions.WIDTH; let sourceHeight = DistanceMeter.dimensions.HEIGHT; let sourceX = DistanceMeter.dimensions.WIDTH * value; let sourceY = 0; const targetX = digitPos * DistanceMeter.dimensions.DEST_WIDTH; const targetY = this.y; const targetWidth = DistanceMeter.dimensions.WIDTH; const targetHeight = DistanceMeter.dimensions.HEIGHT; // For high DPI we 2x source values. if (IS_HIDPI) { sourceWidth *= 2; sourceHeight *= 2; sourceX *= 2; } sourceX += this.spritePos.x; sourceY += this.spritePos.y; this.canvasCtx.save(); if (IS_RTL) { if (opt_highScore) { this.canvasCtx.translate(this.canvasWidth - (DistanceMeter.dimensions.WIDTH * (this.maxScoreUnits + 3)), this.y); } else { this.canvasCtx.translate(this.canvasWidth - DistanceMeter.dimensions.WIDTH, this.y); } this.canvasCtx.scale(-1, 1); } else { const highScoreX = this.x - (this.maxScoreUnits * 2) * DistanceMeter.dimensions.WIDTH; if (opt_highScore) { this.canvasCtx.translate(highScoreX, this.y); } else { this.canvasCtx.translate(this.x, this.y); } } this.canvasCtx.drawImage(this.image, sourceX, sourceY, sourceWidth, sourceHeight, targetX, targetY, targetWidth, targetHeight); this.canvasCtx.restore(); } /** * Covert pixel distance to a 'real' distance. * @param {number} distance Pixel distance ran. * @return {number} The 'real' distance ran. */ getActualDistance(distance) { return distance ? Math.round(distance * this.config.COEFFICIENT) : 0; } /** * Update the distance meter. * @param {number} distance * @param {number} deltaTime * @return {boolean} Whether the achievement sound fx should be played. */ update(deltaTime, distance) { let paint = true; let playSound = false; if (!this.achievement) { 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', 10); } else { this.distance = 0; } if (distance > 0) { // Achievement unlocked. if (distance % this.config.ACHIEVEMENT_DISTANCE === 0) { // Flash score and play sound. this.achievement = true; this.flashTimer = 0; playSound = true; } // Create a string representation of the distance with leading 0. const 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 achievement. 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.achievement = false; this.flashIterations = 0; this.flashTimer = 0; } } // Draw the digits if not flashing. if (paint) { for (let i = this.digits.length - 1; i >= 0; i--) { this.draw(i, parseInt(this.digits[i], 10)); } } this.drawHighScore(); return playSound; } /** * Draw the high score. */ drawHighScore() { if (parseInt(this.highScore, 10) > 0) { this.canvasCtx.save(); this.canvasCtx.globalAlpha = .8; for (let i = this.highScore.length - 1; i >= 0; i--) { this.draw(i, parseInt(this.highScore[i], 10), true); } this.canvasCtx.restore(); } } /** * Set the highscore as a array string. * Position of char in the sprite: H - 10, I - 11. * @param {number} distance Distance ran in pixels. */ setHighScore(distance) { distance = this.getActualDistance(distance); const highScoreStr = (this.defaultString + distance).substr(-this.maxScoreUnits); this.highScore = ['10', '11', ''].concat(highScoreStr.split('')); } /** * Whether a clicked is in the high score area. * @param {Event} e Event object. * @return {boolean} Whether the click was in the high score bounds. */ hasClickedOnHighScore(e) { let x = 0; let y = 0; if (e.touches) { // Bounds for touch differ from pointer. const canvasBounds = this.canvas.getBoundingClientRect(); x = e.touches[0].clientX - canvasBounds.left; y = e.touches[0].clientY - canvasBounds.top; } else { x = e.offsetX; y = e.offsetY; } this.highScoreBounds = this.getHighScoreBounds(); return x >= this.highScoreBounds.x && x <= this.highScoreBounds.x + this.highScoreBounds.width && y >= this.highScoreBounds.y && y <= this.highScoreBounds.y + this.highScoreBounds.height; } /** * Get the bounding box for the high score. * @return {Object} Object with x, y, width and height properties. */ getHighScoreBounds() { return { x: (this.x - (this.maxScoreUnits * 2) * DistanceMeter.dimensions.WIDTH) - DistanceMeter.config.HIGH_SCORE_HIT_AREA_PADDING, y: this.y, width: DistanceMeter.dimensions.WIDTH * (this.highScore.length + 1) + DistanceMeter.config.HIGH_SCORE_HIT_AREA_PADDING, height: DistanceMeter.dimensions.HEIGHT + (DistanceMeter.config.HIGH_SCORE_HIT_AREA_PADDING * 2), }; } /** * Animate flashing the high score to indicate ready for resetting. * The flashing stops following this.config.FLASH_ITERATIONS x 2 flashes. */ flashHighScore() { const now = getTimeStamp(); const deltaTime = now - (this.frameTimeStamp || now); let paint = true; this.frameTimeStamp = now; // Reached the max number of flashes. if (this.flashIterations > this.config.FLASH_ITERATIONS * 2) { this.cancelHighScoreFlashing(); return; } 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++; } if (paint) { this.drawHighScore(); } else { this.clearHighScoreBounds(); } // Frame update. this.flashingRafId = requestAnimationFrame(this.flashHighScore.bind(this)); } /** * Draw empty rectangle over high score. */ clearHighScoreBounds() { this.canvasCtx.save(); this.canvasCtx.fillStyle = '#fff'; this.canvasCtx.rect(this.highScoreBounds.x, this.highScoreBounds.y, this.highScoreBounds.width, this.highScoreBounds.height); this.canvasCtx.fill(); this.canvasCtx.restore(); } /** * Starts the flashing of the high score. */ startHighScoreFlashing() { this.highScoreFlashing = true; this.flashHighScore(); } /** * Whether high score is flashing. * @return {boolean} */ isHighScoreFlashing() { return this.highScoreFlashing; } /** * Stop flashing the high score. */ cancelHighScoreFlashing() { if (this.flashingRafId) { cancelAnimationFrame(this.flashingRafId); } this.flashIterations = 0; this.flashTimer = 0; this.highScoreFlashing = false; this.clearHighScoreBounds(); this.drawHighScore(); } /** * Clear the high score. */ resetHighScore() { this.setHighScore(0); this.cancelHighScoreFlashing(); } /** * Reset the distance meter back to '00000'. */ reset() { this.update(0, 0); this.achievement = false; } } /** * @enum {number} */ DistanceMeter.dimensions = { WIDTH: 10, HEIGHT: 13, DEST_WIDTH: 11, }; /** * Y positioning of the digits in the sprite sheet. * X position is always 0. * @type {Array} */ DistanceMeter.yPos = [0, 13, 27, 40, 53, 67, 80, 93, 107, 120]; /** * Distance meter config. * @enum {number} */ 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, // Padding around the high score hit area. HIGH_SCORE_HIT_AREA_PADDING: 4, }; // Copyright 2021 The Chromium Authors // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. /* @const * Add matching sprite definition and config to spriteDefinitionByType. */ const GAME_TYPE = []; //****************************************************************************** /** * Collision box object. * @param {number} x X position. * @param {number} y Y Position. * @param {number} w Width. * @param {number} h Height. * @constructor */ function CollisionBox(x, y, w, h) { this.x = x; this.y = y; this.width = w; this.height = h; } /** * T-Rex runner sprite definitions. */ const spriteDefinitionByType = { original: { LDPI: { BACKGROUND_EL: { x: 86, y: 2 }, CACTUS_LARGE: { x: 332, y: 2 }, CACTUS_SMALL: { x: 228, y: 2 }, OBSTACLE_2: { x: 332, y: 2 }, OBSTACLE: { x: 228, y: 2 }, CLOUD: { x: 86, y: 2 }, HORIZON: { x: 2, y: 54 }, MOON: { x: 484, y: 2 }, PTERODACTYL: { x: 134, y: 2 }, RESTART: { x: 2, y: 68 }, TEXT_SPRITE: { x: 655, y: 2 }, TREX: { x: 848, y: 2 }, STAR: { x: 645, y: 2 }, COLLECTABLE: { x: 0, y: 0 }, ALT_GAME_END: { x: 32, y: 0 }, }, HDPI: { BACKGROUND_EL: { x: 166, y: 2 }, CACTUS_LARGE: { x: 652, y: 2 }, CACTUS_SMALL: { x: 446, y: 2 }, OBSTACLE_2: { x: 652, y: 2 }, OBSTACLE: { x: 446, y: 2 }, CLOUD: { x: 166, y: 2 }, HORIZON: { x: 2, y: 104 }, MOON: { x: 954, y: 2 }, PTERODACTYL: { x: 260, y: 2 }, RESTART: { x: 2, y: 130 }, TEXT_SPRITE: { x: 1294, y: 2 }, TREX: { x: 1678, y: 2 }, STAR: { x: 1276, y: 2 }, COLLECTABLE: { x: 0, y: 0 }, ALT_GAME_END: { x: 64, y: 0 }, }, MAX_GAP_COEFFICIENT: 1.5, MAX_OBSTACLE_LENGTH: 3, HAS_CLOUDS: 1, BOTTOM_PAD: 10, TREX: { WAITING_1: { x: 44, w: 44, h: 47, xOffset: 0 }, WAITING_2: { x: 0, w: 44, h: 47, xOffset: 0 }, RUNNING_1: { x: 88, w: 44, h: 47, xOffset: 0 }, RUNNING_2: { x: 132, w: 44, h: 47, xOffset: 0 }, JUMPING: { x: 0, w: 44, h: 47, xOffset: 0 }, CRASHED: { x: 220, w: 44, h: 47, xOffset: 0 }, COLLISION_BOXES: [ 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), ], }, /** @type {Array} */ OBSTACLES: [ { 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: [100, 75, 50], // Variable height. yPosMobile: [100, 50], // 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, }, { type: 'COLLECTABLE', width: 31, height: 24, yPos: 104, multipleSpeed: 1000, minGap: 9999, minSpeed: 0, collisionBoxes: [ new CollisionBox(0, 0, 32, 25), ], }, ], BACKGROUND_EL: { 'CLOUD': { HEIGHT: 14, MAX_CLOUD_GAP: 400, MAX_SKY_LEVEL: 30, MIN_CLOUD_GAP: 100, MIN_SKY_LEVEL: 71, OFFSET: 4, WIDTH: 46, X_POS: 1, Y_POS: 120, }, }, BACKGROUND_EL_CONFIG: { MAX_BG_ELS: 1, MAX_GAP: 400, MIN_GAP: 100, POS: 0, SPEED: 0.5, Y_POS: 125, }, LINES: [ { SOURCE_X: 2, SOURCE_Y: 52, WIDTH: 600, HEIGHT: 12, YPOS: 127 }, ], ALT_GAME_OVER_TEXT_CONFIG: { TEXT_X: 32, TEXT_Y: 0, TEXT_WIDTH: 246, TEXT_HEIGHT: 17, FLASH_DURATION: 1500, FLASHING: false, }, }, }; // Copyright 2024 The Chromium Authors // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. class Trex { /** * T-rex game character. * @param {HTMLCanvasElement} canvas * @param {Object} spritePos Positioning within image sprite. */ constructor(canvas, spritePos) { this.canvas = canvas; this.canvasCtx = /** @type {CanvasRenderingContext2D} */ (canvas.getContext('2d')); this.spritePos = spritePos; this.xPos = 0; this.yPos = 0; this.xInitialPos = 0; // Position when on the ground. this.groundYPos = 0; this.currentFrame = 0; this.currentAnimFrames = []; this.blinkDelay = 0; this.blinkCount = 0; this.animStartTime = 0; this.timer = 0; this.msPerFrame = 1000 / FPS; this.config = Object.assign(Trex.config, Trex.normalJumpConfig); // Current status. this.status = Trex.status.WAITING; this.jumping = false; this.ducking = false; this.jumpVelocity = 0; this.reachedMinHeight = false; this.speedDrop = false; this.jumpCount = 0; this.jumpspotX = 0; this.altGameModeEnabled = false; this.flashing = false; this.init(); } /** * T-rex player initialiser. * Sets the t-rex to blink at random intervals. */ init() { 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); } /** * Assign the appropriate jump parameters based on the game speed. */ enableSlowConfig() { const jumpConfig = Runner.slowDown ? Trex.slowJumpConfig : Trex.normalJumpConfig; Trex.config = Object.assign(Trex.config, jumpConfig); this.adjustAltGameConfigForSlowSpeed(); } /** * Enables the alternative game. Redefines the dino config. * @param {Object} spritePos New positioning within image sprite. */ enableAltGameMode(spritePos) { this.altGameModeEnabled = true; this.spritePos = spritePos; const spriteDefinition = Runner.spriteDefinition['TREX']; // Update animation frames. Trex.animFrames.RUNNING.frames = [spriteDefinition.RUNNING_1.x, spriteDefinition.RUNNING_2.x]; Trex.animFrames.CRASHED.frames = [spriteDefinition.CRASHED.x]; if (typeof spriteDefinition.JUMPING.x === 'object') { Trex.animFrames.JUMPING.frames = spriteDefinition.JUMPING.x; } else { Trex.animFrames.JUMPING.frames = [spriteDefinition.JUMPING.x]; } Trex.animFrames.DUCKING.frames = [spriteDefinition.DUCKING_1.x, spriteDefinition.DUCKING_2.x]; // Update Trex config Trex.config.GRAVITY = spriteDefinition.GRAVITY || Trex.config.GRAVITY; Trex.config.HEIGHT = spriteDefinition.RUNNING_1.h, Trex.config.INITIAL_JUMP_VELOCITY = spriteDefinition.INITIAL_JUMP_VELOCITY; Trex.config.MAX_JUMP_HEIGHT = spriteDefinition.MAX_JUMP_HEIGHT; Trex.config.MIN_JUMP_HEIGHT = spriteDefinition.MIN_JUMP_HEIGHT; Trex.config.WIDTH = spriteDefinition.RUNNING_1.w; Trex.config.WIDTH_CRASHED = spriteDefinition.CRASHED.w; Trex.config.WIDTH_JUMP = spriteDefinition.JUMPING.w; Trex.config.INVERT_JUMP = spriteDefinition.INVERT_JUMP; this.adjustAltGameConfigForSlowSpeed(spriteDefinition.GRAVITY); this.config = Trex.config; // Adjust bottom horizon placement. this.groundYPos = Runner.defaultDimensions.HEIGHT - this.config.HEIGHT - Runner.spriteDefinition['BOTTOM_PAD']; this.yPos = this.groundYPos; this.reset(); } /** * Slow speeds adjustments for the alt game modes. * @param {number=} opt_gravityValue */ adjustAltGameConfigForSlowSpeed(opt_gravityValue) { if (Runner.slowDown) { if (opt_gravityValue) { Trex.config.GRAVITY = opt_gravityValue / 1.5; } Trex.config.MIN_JUMP_HEIGHT *= 1.5; Trex.config.MAX_JUMP_HEIGHT *= 1.5; Trex.config.INITIAL_JUMP_VELOCITY = Trex.config.INITIAL_JUMP_VELOCITY * 1.5; } } /** * Setter whether dino is flashing. * @param {boolean} status */ setFlashing(status) { this.flashing = status; } /** * Setter for the jump velocity. * The appropriate drop velocity is also set. * @param {number} setting */ setJumpVelocity(setting) { this.config.INITIAL_JUMP_VELOCITY = -setting; this.config.DROP_VELOCITY = -setting / 2; } /** * Set the animation status. * @param {!number} deltaTime * @param {Trex.status=} opt_status Optional status to switch to. */ update(deltaTime, opt_status) { this.timer += deltaTime; // Update the status. if (opt_status) { this.status = opt_status; this.currentFrame = 0; this.msPerFrame = Trex.animFrames[opt_status].msPerFrame; this.currentAnimFrames = Trex.animFrames[opt_status].frames; if (opt_status === Trex.status.WAITING) { this.animStartTime = getTimeStamp(); this.setBlinkDelay(); } } // Game intro animation, T-rex moves in from the left. if (this.playingIntro && this.xPos < this.config.START_X_POS) { this.xPos += Math.round((this.config.START_X_POS / this.config.INTRO_DURATION) * deltaTime); this.xInitialPos = this.xPos; } if (this.status === Trex.status.WAITING) { this.blink(getTimeStamp()); } else { this.draw(this.currentAnimFrames[this.currentFrame], 0); } // Update the frame position. if (!this.flashing && this.timer >= this.msPerFrame) { this.currentFrame = this.currentFrame === this.currentAnimFrames.length - 1 ? 0 : this.currentFrame + 1; this.timer = 0; } // Speed drop becomes duck if the down key is still being pressed. if (this.speedDrop && this.yPos === this.groundYPos) { this.speedDrop = false; this.setDuck(true); } } /** * Draw the t-rex to a particular position. * @param {number} x * @param {number} y */ draw(x, y) { let sourceX = x; let sourceY = y; let sourceWidth = this.ducking && this.status !== Trex.status.CRASHED ? this.config.WIDTH_DUCK : this.config.WIDTH; let sourceHeight = this.config.HEIGHT; const outputHeight = sourceHeight; const outputWidth = this.altGameModeEnabled && this.status === Trex.status.CRASHED ? this.config.WIDTH_CRASHED : this.config.WIDTH; let jumpOffset = Runner.spriteDefinition.TREX.JUMPING.xOffset; // Width of sprite can change on jump or crashed. if (this.altGameModeEnabled) { if (this.jumping && this.status !== Trex.status.CRASHED) { sourceWidth = this.config.WIDTH_JUMP; } else if (this.status === Trex.status.CRASHED) { sourceWidth = this.config.WIDTH_CRASHED; } } if (IS_HIDPI) { sourceX *= 2; sourceY *= 2; sourceWidth *= 2; sourceHeight *= 2; jumpOffset *= 2; } // Adjustments for sprite sheet position. sourceX += this.spritePos.x; sourceY += this.spritePos.y; // Flashing. if (this.flashing) { if (this.timer < this.config.FLASH_ON) { this.canvasCtx.globalAlpha = 0.5; } else if (this.timer > this.config.FLASH_OFF) { this.timer = 0; } } // Ducking. if (this.ducking && this.status !== Trex.status.CRASHED) { this.canvasCtx.drawImage(Runner.imageSprite, sourceX, sourceY, sourceWidth, sourceHeight, this.xPos, this.yPos, this.config.WIDTH_DUCK, outputHeight); } else if (this.altGameModeEnabled && this.jumping && this.status !== Trex.status.CRASHED) { // Jumping with adjustments. this.canvasCtx.drawImage(Runner.imageSprite, sourceX, sourceY, sourceWidth, sourceHeight, this.xPos - jumpOffset, this.yPos, this.config.WIDTH_JUMP, outputHeight); } else { // Crashed whilst ducking. Trex is standing up so needs adjustment. if (this.ducking && this.status === Trex.status.CRASHED) { this.xPos++; } // Standing / running this.canvasCtx.drawImage(Runner.imageSprite, sourceX, sourceY, sourceWidth, sourceHeight, this.xPos, this.yPos, outputWidth, outputHeight); } this.canvasCtx.globalAlpha = 1; } /** * Sets a random time for the blink to happen. */ setBlinkDelay() { this.blinkDelay = Math.ceil(Math.random() * Trex.BLINK_TIMING); } /** * Make t-rex blink at random intervals. * @param {number} time Current time in milliseconds. */ blink(time) { const deltaTime = time - this.animStartTime; if (deltaTime >= this.blinkDelay) { this.draw(this.currentAnimFrames[this.currentFrame], 0); if (this.currentFrame === 1) { // Set new random delay to blink. this.setBlinkDelay(); this.animStartTime = time; this.blinkCount++; } } } /** * Initialise a jump. * @param {number} speed */ startJump(speed) { if (!this.jumping) { this.update(0, Trex.status.JUMPING); // Tweak the jump velocity based on the speed. this.jumpVelocity = this.config.INITIAL_JUMP_VELOCITY - (speed / 10); this.jumping = true; this.reachedMinHeight = false; this.speedDrop = false; if (this.config.INVERT_JUMP) { this.minJumpHeight = this.groundYPos + this.config.MIN_JUMP_HEIGHT; } } } /** * Jump is complete, falling down. */ endJump() { if (this.reachedMinHeight && this.jumpVelocity < this.config.DROP_VELOCITY) { this.jumpVelocity = this.config.DROP_VELOCITY; } } /** * Update frame for a jump. * @param {number} deltaTime */ updateJump(deltaTime) { const msPerFrame = Trex.animFrames[this.status].msPerFrame; const framesElapsed = deltaTime / msPerFrame; // Speed drop makes Trex fall faster. if (this.speedDrop) { this.yPos += Math.round(this.jumpVelocity * this.config.SPEED_DROP_COEFFICIENT * framesElapsed); } else if (this.config.INVERT_JUMP) { this.yPos -= Math.round(this.jumpVelocity * framesElapsed); } else { this.yPos += Math.round(this.jumpVelocity * framesElapsed); } this.jumpVelocity += this.config.GRAVITY * framesElapsed; // Minimum height has been reached. if (this.config.INVERT_JUMP && (this.yPos > this.minJumpHeight) || !this.config.INVERT_JUMP && (this.yPos < this.minJumpHeight) || this.speedDrop) { this.reachedMinHeight = true; } // Reached max height. if (this.config.INVERT_JUMP && (this.yPos > -this.config.MAX_JUMP_HEIGHT) || !this.config.INVERT_JUMP && (this.yPos < this.config.MAX_JUMP_HEIGHT) || this.speedDrop) { this.endJump(); } // Back down at ground level. Jump completed. if ((this.config.INVERT_JUMP && this.yPos) < this.groundYPos || (!this.config.INVERT_JUMP && this.yPos) > this.groundYPos) { this.reset(); this.jumpCount++; if (Runner.audioCues) { Runner.generatedSoundFx.loopFootSteps(); } } } /** * Set the speed drop. Immediately cancels the current jump. */ setSpeedDrop() { this.speedDrop = true; this.jumpVelocity = 1; } /** * @param {boolean} isDucking */ setDuck(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; } } /** * Reset the t-rex to running at start of game. */ reset() { this.xPos = this.xInitialPos; 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; } } /** * T-rex player config. */ Trex.config = { DROP_VELOCITY: -5, FLASH_OFF: 175, FLASH_ON: 100, HEIGHT: 47, HEIGHT_DUCK: 25, INTRO_DURATION: 1500, SPEED_DROP_COEFFICIENT: 3, SPRITE_WIDTH: 262, START_X_POS: 50, WIDTH: 44, WIDTH_DUCK: 59, }; Trex.slowJumpConfig = { GRAVITY: 0.25, MAX_JUMP_HEIGHT: 50, MIN_JUMP_HEIGHT: 45, INITIAL_JUMP_VELOCITY: -20, }; Trex.normalJumpConfig = { GRAVITY: 0.6, MAX_JUMP_HEIGHT: 30, MIN_JUMP_HEIGHT: 30, INITIAL_JUMP_VELOCITY: -10, }; /** * Used in collision detection. * @enum {Array} */ 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), ], }; /** * Animation states. * @enum {string} */ Trex.status = { CRASHED: 'CRASHED', DUCKING: 'DUCKING', JUMPING: 'JUMPING', RUNNING: 'RUNNING', WAITING: 'WAITING', }; /** * Blinking coefficient. * @const */ Trex.BLINK_TIMING = 7000; /** * Animation config for different states. * @enum {Object} */ Trex.animFrames = { WAITING: { frames: [44, 0], msPerFrame: 1000 / 3, }, RUNNING: { frames: [88, 132], msPerFrame: 1000 / 12, }, CRASHED: { frames: [220], msPerFrame: 1000 / 60, }, JUMPING: { frames: [0], msPerFrame: 1000 / 60, }, DUCKING: { frames: [264, 323], msPerFrame: 1000 / 8, }, }; // Copyright 2024 The Chromium Authors // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. class GameOverPanel { /** * Game over panel. * @param {!HTMLCanvasElement} canvas * @param {Object} textImgPos * @param {Object} restartImgPos * @param {!Object} dimensions Canvas dimensions. * @param {Object=} opt_altGameEndImgPos * @param {boolean=} opt_altGameActive */ constructor(canvas, textImgPos, restartImgPos, dimensions, opt_altGameEndImgPos, opt_altGameActive) { this.canvas = canvas; this.canvasCtx = /** @type {CanvasRenderingContext2D} */ (canvas.getContext('2d')); this.canvasDimensions = dimensions; this.textImgPos = textImgPos; this.restartImgPos = restartImgPos; this.altGameEndImgPos = opt_altGameEndImgPos; this.altGameModeActive = opt_altGameActive; // Retry animation. this.frameTimeStamp = 0; this.animTimer = 0; this.currentFrame = 0; this.gameOverRafId = null; this.flashTimer = 0; this.flashCounter = 0; this.originalText = true; } /** * Update the panel dimensions. * @param {number} width New canvas width. * @param {number} opt_height Optional new canvas height. */ updateDimensions(width, opt_height) { this.canvasDimensions.WIDTH = width; if (opt_height) { this.canvasDimensions.HEIGHT = opt_height; } this.currentFrame = GameOverPanel.animConfig.frames.length - 1; } drawGameOverText(dimensions, opt_useAltText) { const centerX = this.canvasDimensions.WIDTH / 2; let textSourceX = dimensions.TEXT_X; let textSourceY = dimensions.TEXT_Y; let textSourceWidth = dimensions.TEXT_WIDTH; let textSourceHeight = dimensions.TEXT_HEIGHT; const textTargetX = Math.round(centerX - (dimensions.TEXT_WIDTH / 2)); const textTargetY = Math.round((this.canvasDimensions.HEIGHT - 25) / 3); const textTargetWidth = dimensions.TEXT_WIDTH; const textTargetHeight = dimensions.TEXT_HEIGHT; if (IS_HIDPI) { textSourceY *= 2; textSourceX *= 2; textSourceWidth *= 2; textSourceHeight *= 2; } if (!opt_useAltText) { textSourceX += this.textImgPos.x; textSourceY += this.textImgPos.y; } const spriteSource = opt_useAltText ? Runner.altCommonImageSprite : Runner.origImageSprite; this.canvasCtx.save(); if (IS_RTL) { this.canvasCtx.translate(this.canvasDimensions.WIDTH, 0); this.canvasCtx.scale(-1, 1); } // Game over text from sprite. this.canvasCtx.drawImage(spriteSource, textSourceX, textSourceY, textSourceWidth, textSourceHeight, textTargetX, textTargetY, textTargetWidth, textTargetHeight); this.canvasCtx.restore(); } /** * Draw additional adornments for alternative game types. */ drawAltGameElements(tRex) { // Additional adornments. if (this.altGameModeActive && Runner.spriteDefinition.ALT_GAME_END_CONFIG) { const altGameEndConfig = Runner.spriteDefinition.ALT_GAME_END_CONFIG; let altGameEndSourceWidth = altGameEndConfig.WIDTH; let altGameEndSourceHeight = altGameEndConfig.HEIGHT; const altGameEndTargetX = tRex.xPos + altGameEndConfig.X_OFFSET; const altGameEndTargetY = tRex.yPos + altGameEndConfig.Y_OFFSET; if (IS_HIDPI) { altGameEndSourceWidth *= 2; altGameEndSourceHeight *= 2; } this.canvasCtx.drawImage(Runner.altCommonImageSprite, this.altGameEndImgPos.x, this.altGameEndImgPos.y, altGameEndSourceWidth, altGameEndSourceHeight, altGameEndTargetX, altGameEndTargetY, altGameEndConfig.WIDTH, altGameEndConfig.HEIGHT); } } /** * Draw restart button. */ drawRestartButton() { const dimensions = GameOverPanel.dimensions; let framePosX = GameOverPanel.animConfig.frames[this.currentFrame]; let restartSourceWidth = dimensions.RESTART_WIDTH; let restartSourceHeight = dimensions.RESTART_HEIGHT; const restartTargetX = (this.canvasDimensions.WIDTH / 2) - (dimensions.RESTART_WIDTH / 2); const restartTargetY = this.canvasDimensions.HEIGHT / 2; if (IS_HIDPI) { restartSourceWidth *= 2; restartSourceHeight *= 2; framePosX *= 2; } this.canvasCtx.save(); if (IS_RTL) { this.canvasCtx.translate(this.canvasDimensions.WIDTH, 0); this.canvasCtx.scale(-1, 1); } this.canvasCtx.drawImage(Runner.origImageSprite, this.restartImgPos.x + framePosX, this.restartImgPos.y, restartSourceWidth, restartSourceHeight, restartTargetX, restartTargetY, dimensions.RESTART_WIDTH, dimensions.RESTART_HEIGHT); this.canvasCtx.restore(); } /** * Draw the panel. * @param {boolean} opt_altGameModeActive * @param {!Trex} opt_tRex */ draw(opt_altGameModeActive, opt_tRex) { if (opt_altGameModeActive) { this.altGameModeActive = opt_altGameModeActive; } this.drawGameOverText(GameOverPanel.dimensions, false); this.drawRestartButton(); this.drawAltGameElements(opt_tRex); this.update(); } /** * Update animation frames. */ update() { const now = getTimeStamp(); const deltaTime = now - (this.frameTimeStamp || now); this.frameTimeStamp = now; this.animTimer += deltaTime; this.flashTimer += deltaTime; // Restart Button if (this.currentFrame === 0 && this.animTimer > GameOverPanel.LOGO_PAUSE_DURATION) { this.animTimer = 0; this.currentFrame++; this.drawRestartButton(); } else if (this.currentFrame > 0 && this.currentFrame < GameOverPanel.animConfig.frames.length) { if (this.animTimer >= GameOverPanel.animConfig.msPerFrame) { this.currentFrame++; this.drawRestartButton(); } } else if (!this.altGameModeActive && this.currentFrame === GameOverPanel.animConfig.frames.length) { this.reset(); return; } // Game over text if (this.altGameModeActive && spriteDefinitionByType.original.ALT_GAME_OVER_TEXT_CONFIG) { const altTextConfig = spriteDefinitionByType.original.ALT_GAME_OVER_TEXT_CONFIG; if (altTextConfig.FLASHING) { if (this.flashCounter < GameOverPanel.FLASH_ITERATIONS && this.flashTimer > altTextConfig.FLASH_DURATION) { this.flashTimer = 0; this.originalText = !this.originalText; this.clearGameOverTextBounds(); if (this.originalText) { this.drawGameOverText(GameOverPanel.dimensions, false); this.flashCounter++; } else { this.drawGameOverText(altTextConfig, true); } } else if (this.flashCounter >= GameOverPanel.FLASH_ITERATIONS) { this.reset(); return; } } else { this.clearGameOverTextBounds(altTextConfig); this.drawGameOverText(altTextConfig, true); } } this.gameOverRafId = requestAnimationFrame(this.update.bind(this)); } /** * Clear game over text. * @param {Object} dimensions Game over text config. */ clearGameOverTextBounds(dimensions) { this.canvasCtx.save(); this.canvasCtx.clearRect(Math.round(this.canvasDimensions.WIDTH / 2 - (dimensions.TEXT_WIDTH / 2)), Math.round((this.canvasDimensions.HEIGHT - 25) / 3), dimensions.TEXT_WIDTH, dimensions.TEXT_HEIGHT + 4); this.canvasCtx.restore(); } reset() { if (this.gameOverRafId) { cancelAnimationFrame(this.gameOverRafId); this.gameOverRafId = null; } this.animTimer = 0; this.frameTimeStamp = 0; this.currentFrame = 0; this.flashTimer = 0; this.flashCounter = 0; this.originalText = true; } } GameOverPanel.RESTART_ANIM_DURATION = 875; GameOverPanel.LOGO_PAUSE_DURATION = 875; GameOverPanel.FLASH_ITERATIONS = 5; /** * Animation frames spec. */ GameOverPanel.animConfig = { frames: [0, 36, 72, 108, 144, 180, 216, 252], msPerFrame: GameOverPanel.RESTART_ANIM_DURATION / 8, }; /** * Dimensions used in the panel. * @enum {number} */ GameOverPanel.dimensions = { TEXT_X: 0, TEXT_Y: 13, TEXT_WIDTH: 191, TEXT_HEIGHT: 11, RESTART_WIDTH: 36, RESTART_HEIGHT: 32, }; // Copyright 2024 The Chromium Authors // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. /** * Generated sound FX class for audio cues. */ class GeneratedSoundFx { audioCues = false; context = null; panner = null; bgSoundIntervalId = null; init() { this.audioCues = true; if (!this.context) { this.context = new AudioContext(); if (IS_IOS) { this.context.onstatechange = () => { assert(this.context); if (this.context.state !== 'running') { this.context.resume(); } }; this.context.resume(); } this.panner = this.context.createStereoPanner ? this.context.createStereoPanner() : null; } } stopAll() { this.cancelFootSteps(); } /** * Play oscillators at certain frequency and for a certain time. */ playNote(frequency, startTime, duration, vol = 0.01, pan = 0) { assert(this.context); const osc1 = this.context.createOscillator(); const osc2 = this.context.createOscillator(); const volume = this.context.createGain(); // Set oscillator wave type osc1.type = 'triangle'; osc2.type = 'triangle'; volume.gain.value = 0.1; // Set up node routing if (this.panner) { this.panner.pan.value = pan; osc1.connect(volume).connect(this.panner); osc2.connect(volume).connect(this.panner); this.panner.connect(this.context.destination); } else { osc1.connect(volume); osc2.connect(volume); volume.connect(this.context.destination); } // Detune oscillators for chorus effect osc1.frequency.value = frequency + 1; osc2.frequency.value = frequency - 2; // Fade out volume.gain.setValueAtTime(vol, startTime + duration - 0.05); volume.gain.linearRampToValueAtTime(0.00001, startTime + duration); // Start oscillators osc1.start(startTime); osc2.start(startTime); // Stop oscillators osc1.stop(startTime + duration); osc2.stop(startTime + duration); } background() { assert(this.context); if (this.audioCues) { const now = this.context.currentTime; this.playNote(493.883, now, 0.116); this.playNote(659.255, now + 0.116, 0.232); this.loopFootSteps(); } } loopFootSteps() { if (this.audioCues && !this.bgSoundIntervalId) { this.bgSoundIntervalId = setInterval(() => { assert(this.context); this.playNote(73.42, this.context.currentTime, 0.05, 0.16); this.playNote(69.30, this.context.currentTime + 0.116, 0.116, 0.16); }, 280); } } cancelFootSteps() { if (this.audioCues && this.bgSoundIntervalId) { assert(this.context); clearInterval(this.bgSoundIntervalId); this.bgSoundIntervalId = null; this.playNote(103.83, this.context.currentTime, 0.232, 0.02); this.playNote(116.54, this.context.currentTime + 0.116, 0.232, 0.02); } } collect() { if (this.audioCues) { assert(this.context); this.cancelFootSteps(); const now = this.context.currentTime; this.playNote(830.61, now, 0.116); this.playNote(1318.51, now + 0.116, 0.232); } } jump() { if (this.audioCues) { assert(this.context); const now = this.context.currentTime; this.playNote(659.25, now, 0.116, 0.3, -0.6); this.playNote(880, now + 0.116, 0.232, 0.3, -0.6); } } } // Copyright 2024 The Chromium Authors // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. class BackgroundEl { /** * Background item. * Similar to cloud, without random y position. * @param {HTMLCanvasElement} canvas Canvas element. * @param {Object} spritePos Position of image in sprite. * @param {number} containerWidth * @param {string} type Element type. */ constructor(canvas, spritePos, containerWidth, type) { this.canvas = canvas; this.canvasCtx = /** @type {CanvasRenderingContext2D} */ (this.canvas.getContext('2d')); this.spritePos = spritePos; this.containerWidth = containerWidth; this.xPos = containerWidth; this.yPos = 0; this.remove = false; this.type = type; this.gap = getRandomNum(BackgroundEl.config.MIN_GAP, BackgroundEl.config.MAX_GAP); this.animTimer = 0; this.switchFrames = false; this.spriteConfig = {}; this.init(); } /** * Initialise the element setting the y position. */ init() { this.spriteConfig = Runner.spriteDefinition.BACKGROUND_EL[this.type]; if (this.spriteConfig.FIXED) { this.xPos = this.spriteConfig.FIXED_X_POS; } this.yPos = BackgroundEl.config.Y_POS - this.spriteConfig.HEIGHT + this.spriteConfig.OFFSET; this.draw(); } /** * Draw the element. */ draw() { this.canvasCtx.save(); let sourceWidth = this.spriteConfig.WIDTH; let sourceHeight = this.spriteConfig.HEIGHT; let sourceX = this.spriteConfig.X_POS; const outputWidth = sourceWidth; const outputHeight = sourceHeight; if (IS_HIDPI) { sourceWidth *= 2; sourceHeight *= 2; sourceX *= 2; } this.canvasCtx.drawImage(Runner.imageSprite, sourceX, this.spritePos.y, sourceWidth, sourceHeight, this.xPos, this.yPos, outputWidth, outputHeight); this.canvasCtx.restore(); } /** * Update the background element position. * @param {number} speed */ update(speed) { if (!this.remove) { if (this.spriteConfig.FIXED) { this.animTimer += speed; if (this.animTimer > BackgroundEl.config.MS_PER_FRAME) { this.animTimer = 0; this.switchFrames = !this.switchFrames; } if (this.spriteConfig.FIXED_Y_POS_1 && this.spriteConfig.FIXED_Y_POS_2) { this.yPos = this.switchFrames ? this.spriteConfig.FIXED_Y_POS_1 : this.spriteConfig.FIXED_Y_POS_2; } } else { // Fixed speed, regardless of actual game speed. this.xPos -= BackgroundEl.config.SPEED; } this.draw(); // Mark as removable if no longer in the canvas. if (!this.isVisible()) { this.remove = true; } } } /** * Check if the element is visible on the stage. * @return {boolean} */ isVisible() { return this.xPos + this.spriteConfig.WIDTH > 0; } } /** * Background element object config. * Real values assigned when game type changes. * @enum {number} */ BackgroundEl.config = { MAX_BG_ELS: 0, MAX_GAP: 0, MIN_GAP: 0, POS: 0, SPEED: 0, Y_POS: 0, MS_PER_FRAME: 0, // only needed when BACKGROUND_EL.FIXED is true }; // Copyright 2024 The Chromium Authors // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. class Cloud { /** * Cloud background item. * Similar to an obstacle object but without collision boxes. * @param {HTMLCanvasElement} canvas Canvas element. * @param {Object} spritePos Position of image in sprite. * @param {number} containerWidth */ constructor(canvas, spritePos, containerWidth) { this.canvas = canvas; this.canvasCtx = /** @type {CanvasRenderingContext2D} */ (this.canvas.getContext('2d')); this.spritePos = spritePos; this.containerWidth = containerWidth; this.xPos = containerWidth; this.yPos = 0; this.remove = false; this.gap = getRandomNum(Cloud.config.MIN_CLOUD_GAP, Cloud.config.MAX_CLOUD_GAP); this.init(); } /** * Initialise the cloud. Sets the Cloud height. */ init() { this.yPos = getRandomNum(Cloud.config.MAX_SKY_LEVEL, Cloud.config.MIN_SKY_LEVEL); this.draw(); } /** * Draw the cloud. */ draw() { this.canvasCtx.save(); let sourceWidth = Cloud.config.WIDTH; let sourceHeight = Cloud.config.HEIGHT; const outputWidth = sourceWidth; const outputHeight = sourceHeight; if (IS_HIDPI) { sourceWidth = sourceWidth * 2; sourceHeight = sourceHeight * 2; } this.canvasCtx.drawImage(Runner.imageSprite, this.spritePos.x, this.spritePos.y, sourceWidth, sourceHeight, this.xPos, this.yPos, outputWidth, outputHeight); this.canvasCtx.restore(); } /** * Update the cloud position. * @param {number} speed */ update(speed) { if (!this.remove) { this.xPos -= Math.ceil(speed); this.draw(); // Mark as removable if no longer in the canvas. if (!this.isVisible()) { this.remove = true; } } } /** * Check if the cloud is visible on the stage. * @return {boolean} */ isVisible() { return this.xPos + Cloud.config.WIDTH > 0; } } /** * Cloud object config. * @enum {number} */ Cloud.config = { HEIGHT: 14, MAX_CLOUD_GAP: 400, MAX_SKY_LEVEL: 30, MIN_CLOUD_GAP: 100, MIN_SKY_LEVEL: 71, WIDTH: 46, }; // Copyright 2024 The Chromium Authors // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. class HorizonLine { /** * Horizon Line. * Consists of two connecting lines. Randomly assigns a flat / bumpy horizon. * @param {HTMLCanvasElement} canvas * @param {Object} lineConfig Configuration object. */ constructor(canvas, lineConfig) { let sourceX = lineConfig.SOURCE_X; let sourceY = lineConfig.SOURCE_Y; if (IS_HIDPI) { sourceX *= 2; sourceY *= 2; } this.spritePos = { x: sourceX, y: sourceY }; this.canvas = canvas; this.canvasCtx = /** @type {CanvasRenderingContext2D} */ (canvas.getContext('2d')); this.sourceDimensions = {}; this.dimensions = lineConfig; this.sourceXPos = [this.spritePos.x, this.spritePos.x + this.dimensions.WIDTH]; this.xPos = []; this.yPos = 0; this.bumpThreshold = 0.5; this.setSourceDimensions(lineConfig); this.draw(); } /** * Set the source dimensions of the horizon line. */ setSourceDimensions(newDimensions) { for (const dimension in newDimensions) { if (dimension !== 'SOURCE_X' && dimension !== 'SOURCE_Y') { if (IS_HIDPI) { if (dimension !== 'YPOS') { this.sourceDimensions[dimension] = newDimensions[dimension] * 2; } } else { this.sourceDimensions[dimension] = newDimensions[dimension]; } this.dimensions[dimension] = newDimensions[dimension]; } } this.xPos = [0, newDimensions.WIDTH]; this.yPos = newDimensions.YPOS; } /** * Return the crop x position of a type. */ getRandomType() { return Math.random() > this.bumpThreshold ? this.dimensions.WIDTH : 0; } /** * Draw the horizon line. */ draw() { this.canvasCtx.drawImage(Runner.imageSprite, this.sourceXPos[0], this.spritePos.y, this.sourceDimensions.WIDTH, this.sourceDimensions.HEIGHT, this.xPos[0], this.yPos, this.dimensions.WIDTH, this.dimensions.HEIGHT); this.canvasCtx.drawImage(Runner.imageSprite, this.sourceXPos[1], this.spritePos.y, this.sourceDimensions.WIDTH, this.sourceDimensions.HEIGHT, this.xPos[1], this.yPos, this.dimensions.WIDTH, this.dimensions.HEIGHT); } /** * Update the x position of an individual piece of the line. * @param {number} pos Line position. * @param {number} increment */ updateXPos(pos, increment) { const line1 = pos; const line2 = pos === 0 ? 1 : 0; this.xPos[line1] -= increment; this.xPos[line2] = this.xPos[line1] + this.dimensions.WIDTH; if (this.xPos[line1] <= -this.dimensions.WIDTH) { this.xPos[line1] += this.dimensions.WIDTH * 2; this.xPos[line2] = this.xPos[line1] - this.dimensions.WIDTH; this.sourceXPos[line1] = this.getRandomType() + this.spritePos.x; } } /** * Update the horizon line. * @param {number} deltaTime * @param {number} speed */ update(deltaTime, speed) { const increment = Math.floor(speed * (FPS / 1000) * deltaTime); if (this.xPos[0] <= 0) { this.updateXPos(0, increment); } else { this.updateXPos(1, increment); } this.draw(); } /** * Reset horizon to the starting position. */ reset() { this.xPos[0] = 0; this.xPos[1] = this.dimensions.WIDTH; } } // Copyright 2024 The Chromium Authors // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. class NightMode { /** * Nightmode shows a moon and stars on the horizon. * @param {HTMLCanvasElement} canvas * @param {number} spritePos * @param {number} containerWidth */ constructor(canvas, spritePos, containerWidth) { this.spritePos = spritePos; this.canvas = canvas; this.canvasCtx = /** @type {CanvasRenderingContext2D} */ (canvas.getContext('2d')); this.xPos = containerWidth - 50; this.yPos = 30; this.currentPhase = 0; this.opacity = 0; this.containerWidth = containerWidth; this.stars = []; this.drawStars = false; this.placeStars(); } /** * Update moving moon, changing phases. * @param {boolean} activated Whether night mode is activated. */ update(activated) { // Moon phase. if (activated && this.opacity === 0) { this.currentPhase++; if (this.currentPhase >= NightMode.phases.length) { this.currentPhase = 0; } } // Fade in / out. 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; } // Set moon positioning. if (this.opacity > 0) { this.xPos = this.updateXPos(this.xPos, NightMode.config.MOON_SPEED); // Update stars. if (this.drawStars) { for (let i = 0; i < NightMode.config.NUM_STARS; i++) { this.stars[i].x = this.updateXPos(this.stars[i].x, NightMode.config.STAR_SPEED); } } this.draw(); } else { this.opacity = 0; this.placeStars(); } this.drawStars = true; } updateXPos(currentPos, speed) { if (currentPos < -NightMode.config.WIDTH) { currentPos = this.containerWidth; } else { currentPos -= speed; } return currentPos; } draw() { let moonSourceWidth = this.currentPhase === 3 ? NightMode.config.WIDTH * 2 : NightMode.config.WIDTH; let moonSourceHeight = NightMode.config.HEIGHT; let moonSourceX = this.spritePos.x + NightMode.phases[this.currentPhase]; const moonOutputWidth = moonSourceWidth; let starSize = NightMode.config.STAR_SIZE; let starSourceX = spriteDefinitionByType.original.LDPI.STAR.x; if (IS_HIDPI) { moonSourceWidth *= 2; moonSourceHeight *= 2; moonSourceX = this.spritePos.x + (NightMode.phases[this.currentPhase] * 2); starSize *= 2; starSourceX = spriteDefinitionByType.original.HDPI.STAR.x; } this.canvasCtx.save(); this.canvasCtx.globalAlpha = this.opacity; // Stars. if (this.drawStars) { for (let i = 0; i < NightMode.config.NUM_STARS; i++) { this.canvasCtx.drawImage(Runner.origImageSprite, starSourceX, this.stars[i].sourceY, starSize, starSize, Math.round(this.stars[i].x), this.stars[i].y, NightMode.config.STAR_SIZE, NightMode.config.STAR_SIZE); } } // Moon. this.canvasCtx.drawImage(Runner.origImageSprite, moonSourceX, this.spritePos.y, moonSourceWidth, moonSourceHeight, Math.round(this.xPos), this.yPos, moonOutputWidth, NightMode.config.HEIGHT); this.canvasCtx.globalAlpha = 1; this.canvasCtx.restore(); } // Do star placement. placeStars() { const segmentSize = Math.round(this.containerWidth / NightMode.config.NUM_STARS); for (let i = 0; i < NightMode.config.NUM_STARS; i++) { this.stars[i] = {}; this.stars[i].x = getRandomNum(segmentSize * i, segmentSize * (i + 1)); this.stars[i].y = getRandomNum(0, NightMode.config.STAR_MAX_Y); if (IS_HIDPI) { this.stars[i].sourceY = spriteDefinitionByType.original.HDPI.STAR.y + NightMode.config.STAR_SIZE * 2 * i; } else { this.stars[i].sourceY = spriteDefinitionByType.original.LDPI.STAR.y + NightMode.config.STAR_SIZE * i; } } } reset() { this.currentPhase = 0; this.opacity = 0; this.update(false); } } /** * @enum {number} */ NightMode.config = { FADE_SPEED: 0.035, HEIGHT: 40, MOON_SPEED: 0.25, NUM_STARS: 2, STAR_SIZE: 9, STAR_SPEED: 0.3, STAR_MAX_Y: 70, WIDTH: 20, }; NightMode.phases = [140, 120, 100, 60, 40, 20, 0]; // Copyright 2024 The Chromium Authors // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. class Obstacle { /** * Obstacle. * @param {CanvasRenderingContext2D} canvasCtx * @param {ObstacleType} type * @param {Object} spriteImgPos Obstacle position in sprite. * @param {Object} dimensions * @param {number} gapCoefficient Mutipler in determining the gap. * @param {number} speed * @param {number=} opt_xOffset * @param {boolean=} opt_isAltGameMode */ constructor(canvasCtx, type, spriteImgPos, dimensions, gapCoefficient, speed, opt_xOffset, opt_isAltGameMode) { this.canvasCtx = canvasCtx; this.spritePos = spriteImgPos; this.typeConfig = type; this.gapCoefficient = Runner.slowDown ? gapCoefficient * 2 : 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; this.altGameModeActive = opt_isAltGameMode; this.imageSprite = this.typeConfig.type === 'COLLECTABLE' ? Runner.altCommonImageSprite : this.altGameModeActive ? Runner.altGameImageSprite : Runner.imageSprite; // For animated obstacles. this.currentFrame = 0; this.timer = 0; this.init(speed); } /** * Initialise the DOM for the obstacle. * @param {number} speed */ init(speed) { this.cloneCollisionBoxes(); // Only allow sizing if we're at the right speed. if (this.size > 1 && this.typeConfig.multipleSpeed > speed) { this.size = 1; } this.width = this.typeConfig.width * this.size; // Check if obstacle can be positioned at various heights. if (Array.isArray(this.typeConfig.yPos)) { const yPosConfig = IS_MOBILE ? this.typeConfig.yPosMobile : this.typeConfig.yPos; this.yPos = yPosConfig[getRandomNum(0, yPosConfig.length - 1)]; } else { this.yPos = this.typeConfig.yPos; } this.draw(); // Make collision box adjustments, // Central box is adjusted to the size as one box. // ____ ______ ________ // _| |-| _| |-| _| |-| // | |<->| | | |<--->| | | |<----->| | // | | 1 | | | | 2 | | | | 3 | | // |_|___|_| |_|_____|_| |_|_______|_| // if (this.size > 1) { this.collisionBoxes[1].width = this.width - this.collisionBoxes[0].width - this.collisionBoxes[2].width; this.collisionBoxes[2].x = this.width - this.collisionBoxes[2].width; } // For obstacles that go at a different speed from the horizon. if (this.typeConfig.speedOffset) { this.speedOffset = Math.random() > 0.5 ? this.typeConfig.speedOffset : -this.typeConfig.speedOffset; } this.gap = this.getGap(this.gapCoefficient, speed); // Increase gap for audio cues enabled. if (Runner.audioCues) { this.gap *= 2; } } /** * Draw and crop based on size. */ draw() { let sourceWidth = this.typeConfig.width; let sourceHeight = this.typeConfig.height; if (IS_HIDPI) { sourceWidth = sourceWidth * 2; sourceHeight = sourceHeight * 2; } // X position in sprite. let sourceX = (sourceWidth * this.size) * (0.5 * (this.size - 1)) + this.spritePos.x; // Animation frames. if (this.currentFrame > 0) { sourceX += sourceWidth * this.currentFrame; } this.canvasCtx.drawImage(this.imageSprite, sourceX, this.spritePos.y, sourceWidth * this.size, sourceHeight, this.xPos, this.yPos, this.typeConfig.width * this.size, this.typeConfig.height); } /** * Obstacle frame update. * @param {number} deltaTime * @param {number} speed */ update(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; } } } /** * Calculate a random gap size. * - Minimum gap gets wider as speed increases * @param {number} gapCoefficient * @param {number} speed * @return {number} The gap size. */ getGap(gapCoefficient, speed) { const minGap = Math.round(this.width * speed + this.typeConfig.minGap * gapCoefficient); const maxGap = Math.round(minGap * Obstacle.MAX_GAP_COEFFICIENT); return getRandomNum(minGap, maxGap); } /** * Check if obstacle is visible. * @return {boolean} Whether the obstacle is in the game area. */ isVisible() { return this.xPos + this.width > 0; } /** * Make a copy of the collision boxes, since these will change based on * obstacle type and size. */ cloneCollisionBoxes() { const collisionBoxes = this.typeConfig.collisionBoxes; for (let i = collisionBoxes.length - 1; i >= 0; i--) { this.collisionBoxes[i] = new CollisionBox(collisionBoxes[i].x, collisionBoxes[i].y, collisionBoxes[i].width, collisionBoxes[i].height); } } } /** * Coefficient for calculating the maximum gap. */ Obstacle.MAX_GAP_COEFFICIENT = 1.5; /** * Maximum obstacle grouping count. */ Obstacle.MAX_OBSTACLE_LENGTH = 3; // Copyright 2024 The Chromium Authors // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. /** * Horizon background class. */ class Horizon { /** * @param {HTMLCanvasElement} canvas * @param {Object} spritePos Sprite positioning. * @param {Object} dimensions Canvas dimensions. * @param {number} gapCoefficient */ constructor(canvas, spritePos, dimensions, gapCoefficient) { this.canvas = canvas; this.canvasCtx = /** @type {CanvasRenderingContext2D} */ (this.canvas.getContext('2d')); this.config = Horizon.config; this.dimensions = dimensions; this.gapCoefficient = gapCoefficient; this.obstacles = []; this.obstacleHistory = []; this.horizonOffsets = [0, 0]; this.cloudFrequency = this.config.CLOUD_FREQUENCY; this.spritePos = spritePos; this.nightMode = null; this.altGameModeActive = false; // Cloud this.clouds = []; this.cloudSpeed = this.config.BG_CLOUD_SPEED; // Background elements this.backgroundEls = []; this.lastEl = null; this.backgroundSpeed = this.config.BG_CLOUD_SPEED; // Horizon this.horizonLine = null; this.horizonLines = []; this.init(); } /** * Initialise the horizon. Just add the line and a cloud. No obstacles. */ init() { Obstacle.types = spriteDefinitionByType.original.OBSTACLES; this.addCloud(); // Multiple Horizon lines for (let i = 0; i < Runner.spriteDefinition.LINES.length; i++) { this.horizonLines.push(new HorizonLine(this.canvas, Runner.spriteDefinition.LINES[i])); } this.nightMode = new NightMode(this.canvas, this.spritePos.MOON, this.dimensions.WIDTH); } /** * Update obstacle definitions based on the speed of the game. */ adjustObstacleSpeed() { for (let i = 0; i < Obstacle.types.length; i++) { if (Runner.slowDown) { Obstacle.types[i].multipleSpeed = Obstacle.types[i].multipleSpeed / 2; Obstacle.types[i].minGap *= 1.5; Obstacle.types[i].minSpeed = Obstacle.types[i].minSpeed / 2; // Convert variable y position obstacles to fixed. if (typeof (Obstacle.types[i].yPos) === 'object') { Obstacle.types[i].yPos = Obstacle.types[i].yPos[0]; Obstacle.types[i].yPosMobile = Obstacle.types[i].yPos[0]; } } } } /** * Update sprites to correspond to change in sprite sheet. * @param {number} spritePos */ enableAltGameMode(spritePos) { // Clear existing horizon objects. this.clouds = []; this.backgroundEls = []; this.altGameModeActive = true; this.spritePos = spritePos; Obstacle.types = Runner.spriteDefinition.OBSTACLES; this.adjustObstacleSpeed(); Obstacle.MAX_GAP_COEFFICIENT = Runner.spriteDefinition.MAX_GAP_COEFFICIENT; Obstacle.MAX_OBSTACLE_LENGTH = Runner.spriteDefinition.MAX_OBSTACLE_LENGTH; BackgroundEl.config = Runner.spriteDefinition.BACKGROUND_EL_CONFIG; this.horizonLines = []; for (let i = 0; i < Runner.spriteDefinition.LINES.length; i++) { this.horizonLines.push(new HorizonLine(this.canvas, Runner.spriteDefinition.LINES[i])); } this.reset(); } /** * @param {number} deltaTime * @param {number} currentSpeed * @param {boolean} updateObstacles Used as an override to prevent * the obstacles from being updated / added. This happens in the * ease in section. * @param {boolean} showNightMode Night mode activated. */ update(deltaTime, currentSpeed, updateObstacles, showNightMode) { this.runningTime += deltaTime; if (this.altGameModeActive) { this.updateBackgroundEls(deltaTime, currentSpeed); } for (let i = 0; i < this.horizonLines.length; i++) { this.horizonLines[i].update(deltaTime, currentSpeed); } if (!this.altGameModeActive || Runner.spriteDefinition.HAS_CLOUDS) { this.nightMode.update(showNightMode); this.updateClouds(deltaTime, currentSpeed); } if (updateObstacles) { this.updateObstacles(deltaTime, currentSpeed); } } /** * Update background element positions. Also handles creating new elements. * @param {number} elSpeed * @param {Array

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