/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); var storage = LK.import("@upit/storage.v1", { highScore: 0 }); /**** * Classes ****/ var BoostButton = Container.expand(function () { var self = Container.call(this); var buttonGraphics = self.attachAsset('boostButton', { anchorX: 0.5, anchorY: 0.5 }); self.down = function () { buttonGraphics.alpha = 0.8; if (player && !player.boosting) { player.boost(); } }; self.up = function () { buttonGraphics.alpha = 0.5; }; return self; }); var BrakeButton = Container.expand(function () { var self = Container.call(this); var buttonGraphics = self.attachAsset('brakeButton', { anchorX: 0.5, anchorY: 0.5 }); self.down = function () { if (player) { player.speed = baseSpeed * 0.2; // Decrease speed rapidly } }; self.up = function () { if (player) { player.speed = baseSpeed; // Restore normal speed } }; }); var Coin = Container.expand(function () { var self = Container.call(this); var coinGraphics = self.attachAsset('coin', { anchorX: 0.5, anchorY: 0.5 }); self.width = coinGraphics.width; self.height = coinGraphics.height; self.lane = 0; self.speed = 0; self.setup = function (lane, speed) { self.lane = lane; self.speed = speed; self.x = getLanePosition(lane); self.y = -self.height; }; self.update = function () { self.y += self.speed; // Add a spinning effect to the coin coinGraphics.rotation += 0.05; }; return self; }); var EnemyCar = Container.expand(function () { var self = Container.call(this); var carGraphics = self.attachAsset('enemyCar', { anchorX: 0.5, anchorY: 0.5 }); self.width = carGraphics.width; self.height = carGraphics.height; self.lane = 0; self.speed = 0; self.setup = function (lane, speed) { self.lane = lane; self.speed = speed; self.x = getLanePosition(lane); self.y = -self.height; }; self.update = function () { self.y += self.speed; }; return self; }); var FastCar = Container.expand(function () { var self = Container.call(this); var carGraphics = self.attachAsset('fastCar', { anchorX: 0.5, anchorY: 0.5 }); self.width = carGraphics.width; self.height = carGraphics.height; self.lane = 0; self.speed = 0; self.setup = function (lane, speed) { self.lane = lane; self.speed = speed; self.x = getLanePosition(lane); self.y = -self.height; }; self.update = function () { self.y += self.speed; }; return self; }); var GreenCar = Container.expand(function () { var self = Container.call(this); var carGraphics = self.attachAsset('greenCar', { anchorX: 0.5, anchorY: 0.5 }); self.width = carGraphics.width; self.height = carGraphics.height; self.lane = 0; self.speed = 0; self.setup = function (lane, speed) { self.lane = lane; self.speed = speed; self.x = getLanePosition(lane); self.y = -self.height; }; self.update = function () { self.y += self.speed; }; return self; }); var PlayerCar = Container.expand(function () { var self = Container.call(this); var carGraphics = self.attachAsset('playerCar', { anchorX: 0.5, anchorY: 0.5 }); self.lane = 1; // 0=left, 1=middle, 2=right self.width = carGraphics.width; self.height = carGraphics.height; self.moving = false; self.boosting = false; self.boostTime = 0; self.boostDuration = 120; // 2 seconds at 60 fps self.switchLane = function (targetLane) { if (self.moving || targetLane < 0 || targetLane > 2) { return; } self.moving = true; var targetX = getLanePosition(targetLane); tween(self, { x: targetX }, { duration: 300, easing: tween.easeInOut, onFinish: function onFinish() { self.lane = targetLane; self.moving = false; } }); }; self.boost = function () { if (self.boosting) { return; } self.boosting = true; self.boostTime = self.boostDuration; LK.getSound('boost').play(); }; self.update = function () { if (self.boosting) { self.boostTime--; if (self.boostTime <= 0) { self.boosting = false; } } // Play car movement sound LK.getSound('carMove').play(); }; return self; }); var PoliceCar = Container.expand(function () { var self = Container.call(this); var carGraphics = self.attachAsset('policeCar', { anchorX: 0.5, anchorY: 0.5 }); self.width = carGraphics.width; self.height = carGraphics.height; self.lane = 0; self.speed = 0; self.followTime = 180; // Follow for 3 seconds at 60 fps self.following = false; self.setup = function (lane, speed) { self.lane = lane; self.speed = speed; self.x = getLanePosition(lane); self.y = -self.height; self.following = true; }; self.update = function () { if (self.following) { self.followTime--; if (self.followTime <= 0) { self.following = false; } else { // Follow the player's lane self.x = getLanePosition(player.lane); } } self.y += self.speed; }; return self; }); var Road = Container.expand(function () { var self = Container.call(this); var roadGraphics = self.attachAsset('road', { anchorX: 0.5, anchorY: 0 }); self.laneWidth = roadGraphics.width; // Create road lines self.lines = []; var lineCount = 15; var lineSpacing = 2732 / lineCount; for (var i = 0; i < lineCount; i++) { var line = self.addChild(LK.getAsset('roadLine', { anchorX: 0.5, anchorY: 0.5, x: 0, y: i * lineSpacing })); self.lines.push(line); } self.speed = 10; self.update = function () { // Animate the road lines for (var i = 0; i < self.lines.length; i++) { self.lines[i].y += self.speed; // Reset line position when it goes off screen if (self.lines[i].y > 2732) { self.lines[i].y = 0; } } }; return self; }); var SlowTruck = Container.expand(function () { var self = Container.call(this); var truckGraphics = self.attachAsset('slowTruck', { anchorX: 0.5, anchorY: 0.5 }); self.width = truckGraphics.width; self.height = truckGraphics.height; self.lane = 0; self.speed = 0; self.setup = function (lane, speed) { self.lane = lane; self.speed = speed; self.x = getLanePosition(lane) + (roadWidth - self.width) / 2; self.y = -self.height; }; self.update = function () { self.y += self.speed; }; return self; }); var ZigZagCar = Container.expand(function () { var self = Container.call(this); var carGraphics = self.attachAsset('zigZagCar', { anchorX: 0.5, anchorY: 0.5 }); self.width = carGraphics.width; self.height = carGraphics.height; self.lane = 0; self.speed = 0; self.zigzagInterval = 120; // Switch lanes every 2 seconds at 60 fps self.zigzagTimer = 0; self.setup = function (lane, speed) { self.lane = lane; self.speed = speed; self.x = getLanePosition(lane); self.y = -self.height; }; self.update = function () { self.y += self.speed; self.zigzagTimer++; if (self.zigzagTimer >= self.zigzagInterval) { self.zigzagTimer = 0; // Switch lanes randomly var newLane = (self.lane + 1) % 3; self.lane = newLane; self.x = getLanePosition(newLane); } }; return self; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x000000, title: "Highway Hero" }); /**** * Game Code ****/ // Game variables var player; var score = 0; // Initialize score tracking var roads = []; var enemies = []; var coins = []; var boostButton; var baseSpeed = 10; var score = 0; var startX, direction; var spawnTimer = 0; var spawnInterval = 60; // Spawn an object every second (60 frames) var difficultyTimer = 0; var difficultyInterval = 600; // Increase difficulty every 10 seconds var roadWidth = 240; var lanePositions = []; var gameRunning = false; var scoreText; var highScoreText; // Helper function to get the x-position for a lane function getLanePosition(lane) { return lanePositions[lane]; } // Initialize game elements function initGame() { // Set background game.setBackgroundColor(0x85C1E9); // Add background assets var background = LK.getAsset('background', { anchorX: 0.5, anchorY: 0 }); background.x = 2048 / 2; background.y = 0; game.addChild(background); // Initialize lane positions var screenCenter = 2048 / 2; lanePositions = [screenCenter - roadWidth, screenCenter, screenCenter + roadWidth]; // Create roads for (var i = 0; i < 3; i++) { var road = new Road(); road.x = lanePositions[i]; roads.push(road); game.addChild(road); } // Create player car player = new PlayerCar(); player.x = lanePositions[1]; // Start in middle lane player.y = 2732 - 500; // Position near bottom of screen game.addChild(player); // Create boost button boostButton = new BoostButton(); boostButton.x = 2048 - 200; boostButton.y = 2732 - 200; game.addChild(boostButton); // Create brake button var brakeButton = new BrakeButton(); brakeButton.x = 200; // Position on the left side of the screen brakeButton.y = 2732 - 200; game.addChild(brakeButton); // Initialize score score = 0; // Setup score text scoreText = new Text2('Score: 0', { size: 80, fill: 0xFFFFFF }); scoreText.anchor.set(0.5, 0); // Center the score text horizontally LK.gui.top.addChild(scoreText); // Position the score text at the top-center // Setup high score text highScoreText = new Text2('Best: ' + storage.highScore, { size: 60, fill: 0xFFFFFF }); highScoreText.anchor.set(0, 0); highScoreText.y = 90; LK.gui.topRight.addChild(highScoreText); // Reset game state enemies = []; coins = []; baseSpeed = 10; spawnTimer = 0; difficultyTimer = 0; gameRunning = true; // Start background music LK.playMusic('bgmusic', { fade: { start: 0, end: 0.4, duration: 1000 } }); } // Spawn objects (enemies or coins) function spawnObject() { var lane = Math.floor(Math.random() * 3); // 30% chance to spawn a coin, 20% chance for enemy car, 20% chance for normal car, 10% chance for police car, 10% chance for slow truck, 10% chance for fast car var randomValue = Math.random(); if (randomValue < 0.3) { var coin = new Coin(); coin.setup(lane, baseSpeed); coins.push(coin); game.addChild(coin); } else if (randomValue < 0.7) { var enemy = new EnemyCar(); enemy.setup(lane, baseSpeed * 0.8); // Enemies move a bit slower than the road enemies.push(enemy); game.addChild(enemy); } else if (randomValue < 0.9) { var policeCar = new PoliceCar(); policeCar.setup(lane, baseSpeed * 0.8); enemies.push(policeCar); game.addChild(policeCar); LK.getSound('siren').play(); } else if (randomValue < 0.95) { var zigZagCar = new ZigZagCar(); zigZagCar.setup(lane, baseSpeed * 1.2); // ZigZag cars move slightly faster enemies.push(zigZagCar); game.addChild(zigZagCar); } else if (randomValue < 0.975) { var slowTruck = new SlowTruck(); slowTruck.setup(lane, baseSpeed * 0.5); // Slow trucks move slower than other vehicles enemies.push(slowTruck); game.addChild(slowTruck); } else if (randomValue < 0.99) { var greenCar = new GreenCar(); greenCar.setup(lane, baseSpeed * 1.1); // Green cars move slightly faster than normal enemies.push(greenCar); game.addChild(greenCar); } else { var fastCar = new FastCar(); fastCar.setup(lane, baseSpeed * 1.5); // Fast cars move quicker than other vehicles enemies.push(fastCar); game.addChild(fastCar); } } // Check for collisions function checkCollisions() { if (!player) { return; } // Check for collision with enemies for (var i = enemies.length - 1; i >= 0; i--) { if (player.intersects(enemies[i])) { // Game over on collision LK.getSound('crash').play(); LK.effects.flashScreen(0xFF0000, 500); // Update high score if needed if (score > storage.highScore) { storage.highScore = score; highScoreText.setText('Best: ' + storage.highScore); } // Show game over LK.stopMusic(); LK.showGameOver(); gameRunning = false; return; } } // Check for collision with coins for (var j = coins.length - 1; j >= 0; j--) { if (player.intersects(coins[j])) { // Collect coin score += 10; scoreText.setText('Score: ' + score); LK.getSound('coinCollect').play(); LK.effects.flashObject(coins[j], 0xFFFFFF, 200); coins[j].destroy(); coins.splice(j, 1); } } } // Update function for game logic game.update = function () { if (!gameRunning) { return; } // Update road and player for (var i = 0; i < roads.length; i++) { var speedMultiplier = player.boosting ? 2 : 1; roads[i].speed = baseSpeed * speedMultiplier; roads[i].update(); } player.update(); // Spawn objects spawnTimer++; if (spawnTimer >= spawnInterval) { spawnObject(); spawnTimer = 0; } // Increase difficulty over time difficultyTimer++; if (difficultyTimer >= difficultyInterval) { baseSpeed += 1; spawnInterval = Math.max(30, spawnInterval - 3); // Speed up spawning but not below 0.5 seconds difficultyTimer = 0; // Add points for surviving longer score += 5; scoreText.setText('Score: ' + score); } // Update enemies for (var j = enemies.length - 1; j >= 0; j--) { var speedMultiplier = player.boosting ? 2 : 1; enemies[j].speed = baseSpeed * 0.8 * speedMultiplier; enemies[j].update(); // Remove enemies that are off screen if (enemies[j].y > 2732 + enemies[j].height) { enemies[j].destroy(); enemies.splice(j, 1); // Add points for each car you pass score += 1; scoreText.setText('Score: ' + score); } } // Update coins for (var k = coins.length - 1; k >= 0; k--) { var speedMultiplier = player.boosting ? 2 : 1; coins[k].speed = baseSpeed * 0.8 * speedMultiplier; coins[k].update(); // Remove coins that are off screen if (coins[k].y > 2732 + coins[k].height) { coins[k].destroy(); coins.splice(k, 1); } } // Check for collisions checkCollisions(); }; // Touch handling for lane changes game.down = function (x, y) { if (!gameRunning) { return; } // Both sides of the screen are for lane switching startX = x; direction = null; }; game.move = function (x, y) { if (!gameRunning || !startX) { return; } // Determine swipe direction if it's significant enough var deltaX = x - startX; if (Math.abs(deltaX) > 50) { direction = deltaX > 0 ? 'right' : 'left'; } }; game.up = function (x, y) { if (!gameRunning) { return; } // Execute lane change based on swipe direction if (direction) { if (direction === 'left' && player.lane > 0) { player.switchLane(player.lane - 1); } else if (direction === 'right' && player.lane < 2) { player.switchLane(player.lane + 1); } } startX = null; direction = null; }; // Initialize the game initGame();