/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); /**** * Classes ****/ // Lane Divider Class var LaneDivider = Container.expand(function () { var self = Container.call(this); var divider = self.attachAsset('laneDivider', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 0; self.update = function () { self.y += self.speed; }; return self; }); // Obstacle Car Class var ObstacleCar = Container.expand(function () { var self = Container.call(this); var car = self.attachAsset('obstacleCar', { anchorX: 0.5, anchorY: 0.5 }); self.type = 'car'; self.speed = 0; self.update = function () { self.y += self.speed; }; return self; }); // Obstacle Truck Class var ObstacleTruck = Container.expand(function () { var self = Container.call(this); var truck = self.attachAsset('obstacleTruck', { anchorX: 0.5, anchorY: 0.5 }); self.type = 'truck'; self.speed = 0; self.update = function () { self.y += self.speed; }; return self; }); // Player Car Class var PlayerCar = Container.expand(function () { var self = Container.call(this); var car = self.attachAsset('playerCar', { anchorX: 0.5, anchorY: 0.5 }); // For collision, use self as the hitbox return self; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x222222 }); /**** * Game Code ****/ // Game constants // Vehicle (player car) // Obstacle (other cars/trucks) // Road lane divider var ROAD_WIDTH = 1200; var ROAD_LEFT = (2048 - ROAD_WIDTH) / 2; var ROAD_RIGHT = ROAD_LEFT + ROAD_WIDTH; var NUM_LANES = 4; var LANE_WIDTH = ROAD_WIDTH / NUM_LANES; var PLAYER_START_LANE = 2; // 0-indexed var PLAYER_Y = 2200; var OBSTACLE_MIN_GAP = 420; var OBSTACLE_MAX_GAP = 800; var OBSTACLE_MIN_SPEED = 18; var OBSTACLE_MAX_SPEED = 38; var LANE_DIVIDER_GAP = 320; var LANE_DIVIDER_SPEED = 28; // Game state var playerCar; var followerCars = []; // Array of follower cars (unused, kept for compatibility) var NUM_FOLLOWERS = 0; // Number of follower cars (set to 0 to disable followers) var FOLLOWER_GAP = 120; // Vertical gap between cars (unused) var playerLane = PLAYER_START_LANE; var obstacles = []; var laneDividers = []; var dragStartX = null; var dragStartLane = null; var isDragging = false; var gameOver = false; var ticksSurvived = 0; var speedMultiplier = 1; // Score display var scoreTxt = new Text2('0', { size: 120, fill: "#fff" }); scoreTxt.anchor.set(0.5, 0); LK.gui.top.addChild(scoreTxt); // Draw road background (just a rectangle, not an asset) var roadBg = LK.getAsset('laneDivider', { width: ROAD_WIDTH, height: 2732, color: 0x333333, anchorX: 0, anchorY: 0, x: ROAD_LEFT, y: 0 }); game.addChild(roadBg); // Draw lane dividers (vertical dashed lines) function spawnLaneDividers() { for (var lane = 1; lane < NUM_LANES; lane++) { for (var y = -120; y < 2732 + 120; y += LANE_DIVIDER_GAP + 120) { var divider = new LaneDivider(); divider.x = ROAD_LEFT + lane * LANE_WIDTH; divider.y = y; divider.speed = LANE_DIVIDER_SPEED; laneDividers.push(divider); game.addChild(divider); } } } spawnLaneDividers(); // Spawn player car playerCar = new PlayerCar(); playerCar.x = ROAD_LEFT + (playerLane + 0.5) * LANE_WIDTH; playerCar.y = PLAYER_Y; game.addChild(playerCar); // No follower cars to spawn // Touch controls: tap left/right quarter to move car to leftmost/rightmost lane, inner quarters for inner lanes game.down = function (x, y, obj) { if (gameOver) return; var quarter = 2048 / 4; var targetLane = playerLane; if (x < quarter) { // Tap on leftmost quarter: move to lane 0 targetLane = 0; } else if (x < 2 * quarter) { // Tap on 2nd quarter: move to lane 1 targetLane = 1; } else if (x < 3 * quarter) { // Tap on 3rd quarter: move to lane 2 targetLane = 2; } else { // Tap on rightmost quarter: move to lane 3 targetLane = 3; } if (playerLane !== targetLane) { playerLane = targetLane; tween(playerCar, { x: ROAD_LEFT + (playerLane + 0.5) * LANE_WIDTH }, { duration: 120, easing: tween.cubicOut }); } }; game.move = function (x, y, obj) { // No drag/swipe movement needed for tap controls }; game.up = function (x, y, obj) { // No drag/swipe state to reset }; // Spawn obstacles at random intervals var nextObstacleTick = 0; function spawnObstacle() { // Randomly choose lane and type var lane = Math.floor(Math.random() * NUM_LANES); var type = Math.random() < 0.7 ? 'car' : 'truck'; var obs; if (type === 'car') { obs = new ObstacleCar(); } else { obs = new ObstacleTruck(); } obs.x = ROAD_LEFT + (lane + 0.5) * LANE_WIDTH; obs.y = -(obs.height / 2); // Speed increases with time obs.speed = OBSTACLE_MIN_SPEED + (OBSTACLE_MAX_SPEED - OBSTACLE_MIN_SPEED) * speedMultiplier; obstacles.push(obs); game.addChild(obs); } // Main game update loop game.update = function () { if (gameOver) return; ticksSurvived++; // Score: 1 point per 10 ticks survived if (ticksSurvived % 10 === 0) { LK.setScore(LK.getScore() + 1); scoreTxt.setText(LK.getScore()); } // Increase speed multiplier over time (caps at 1) speedMultiplier = Math.min(1, ticksSurvived / (60 * 60)); // 1 after 60 seconds // Move lane dividers for (var i = laneDividers.length - 1; i >= 0; i--) { var divider = laneDividers[i]; divider.speed = LANE_DIVIDER_SPEED + 20 * speedMultiplier; divider.update(); if (divider.y > 2732 + 120) { divider.y = -120; } } // Move obstacles for (var j = obstacles.length - 1; j >= 0; j--) { var obs = obstacles[j]; obs.speed = OBSTACLE_MIN_SPEED + (OBSTACLE_MAX_SPEED - OBSTACLE_MIN_SPEED) * speedMultiplier; obs.update(); // Remove if off screen if (obs.y - obs.height / 2 > 2732 + 100) { obs.destroy(); obstacles.splice(j, 1); continue; } // Collision detection if (obs.intersects(playerCar)) { // Flash screen red LK.effects.flashScreen(0xff0000, 800); gameOver = true; LK.showGameOver(); return; } } // No follower cars to update // Spawn new obstacles if (LK.ticks >= nextObstacleTick) { spawnObstacle(); // Next obstacle in random ticks, gets faster over time var minGap = OBSTACLE_MIN_GAP - 200 * speedMultiplier; var maxGap = OBSTACLE_MAX_GAP - 400 * speedMultiplier; if (minGap < 180) minGap = 180; if (maxGap < 320) maxGap = 320; var gap = minGap + Math.random() * (maxGap - minGap); nextObstacleTick = LK.ticks + Math.floor(gap / (OBSTACLE_MIN_SPEED + (OBSTACLE_MAX_SPEED - OBSTACLE_MIN_SPEED) * speedMultiplier)); } }; // Reset game state on restart game.on('reset', function () { // Remove all obstacles and lane dividers for (var i = 0; i < obstacles.length; i++) { obstacles[i].destroy(); } obstacles = []; for (var j = 0; j < laneDividers.length; j++) { laneDividers[j].destroy(); } laneDividers = []; // No follower cars to remove or respawn // Recreate lane dividers spawnLaneDividers(); // Reset player playerLane = PLAYER_START_LANE; playerCar.x = ROAD_LEFT + (playerLane + 0.5) * LANE_WIDTH; playerCar.y = PLAYER_Y; // Reset state dragStartX = null; dragStartLane = null; isDragging = false; gameOver = false; ticksSurvived = 0; speedMultiplier = 0; LK.setScore(0); scoreTxt.setText('0'); nextObstacleTick = 0; });