/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); /**** * Classes ****/ var Coin = Container.expand(function () { var self = Container.call(this); var graphics = self.attachAsset('coin', { anchorX: 0.5, anchorY: 0.5 }); self.speed = gameSpeed; self.collected = false; self.update = function () { self.y += self.speed; // Spinning animation graphics.rotation += 0.1; }; return self; }); var Obstacle = Container.expand(function (type) { var self = Container.call(this); self.obstacleType = type || 'train'; var graphics = self.attachAsset(self.obstacleType, { anchorX: 0.5, anchorY: 1.0 }); self.speed = gameSpeed; self.update = function () { self.y += self.speed; }; return self; }); var Player = Container.expand(function () { var self = Container.call(this); var graphics = self.attachAsset('player', { anchorX: 0.5, anchorY: 1.0 }); self.currentLane = 1; // 0=left, 1=center, 2=right self.targetX = 0; self.isJumping = false; self.isSliding = false; self.invincible = false; self.getLaneX = function (lane) { var laneWidth = 2048 / 3; return laneWidth * lane + laneWidth / 2; }; self.switchLane = function (newLane) { if (newLane >= 0 && newLane <= 2) { self.currentLane = newLane; self.targetX = self.getLaneX(newLane); } }; self.jump = function () { if (!self.isJumping && !self.isSliding) { self.isJumping = true; var originalY = self.y; tween(self, { y: originalY - 150 }, { duration: 300, easing: tween.easeOut, onFinish: function onFinish() { tween(self, { y: originalY }, { duration: 300, easing: tween.easeIn, onFinish: function onFinish() { self.isJumping = false; } }); } }); } }; self.slide = function () { if (!self.isJumping && !self.isSliding) { self.isSliding = true; graphics.height = 60; LK.setTimeout(function () { graphics.height = 120; self.isSliding = false; }, 800); } }; self.update = function () { // Smooth lane switching var diff = self.targetX - self.x; if (Math.abs(diff) > 5) { self.x += diff * 0.15; } // Flash effect when invincible if (self.invincible) { graphics.alpha = LK.ticks % 10 < 5 ? 0.5 : 1.0; } else { graphics.alpha = 1.0; } }; return self; }); var Police = Container.expand(function () { var self = Container.call(this); var graphics = self.attachAsset('police', { anchorX: 0.5, anchorY: 1.0 }); self.currentLane = 1; // Start in center lane like player self.targetX = 0; self.speed = gameSpeed * 0.8; // Slightly slower than game speed self.getLaneX = function (lane) { var laneWidth = 2048 / 3; return laneWidth * lane + laneWidth / 2; }; self.chasePlayer = function (playerLane) { // Police follows player's lane with some delay if (LK.ticks % 60 === 0) { // Update target lane every second self.currentLane = playerLane; self.targetX = self.getLaneX(playerLane); } }; self.update = function () { // Move forward at chase speed self.y += self.speed; // Smooth lane switching like player var diff = self.targetX - self.x; if (Math.abs(diff) > 5) { self.x += diff * 0.12; // Slightly slower lane switching than player } }; return self; }); var PowerUp = Container.expand(function (type) { var self = Container.call(this); self.powerType = type || 'invincible'; var graphics = self.attachAsset('powerup', { anchorX: 0.5, anchorY: 0.5 }); // Color code power-ups if (self.powerType === 'invincible') { graphics.tint = 0x00FF00; } else if (self.powerType === 'magnet') { graphics.tint = 0x0000FF; } self.speed = gameSpeed; self.collected = false; self.update = function () { self.y += self.speed; graphics.rotation += 0.05; }; return self; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x212121 }); /**** * Game Code ****/ // Game variables var gameSpeed = 8; var baseSpeed = 8; var player; var police; var obstacles = []; var coins = []; var powerups = []; var distance = 0; var coinCount = 0; var lastObstacleY = -500; var lastCoinY = -300; var swipeStartX = 0; var swipeStartY = 0; var isSwipeStarted = false; // Power-up states var invincibleTimer = 0; var magnetTimer = 0; // Create background tracks for (var i = 0; i < 4; i++) { var track = game.addChild(LK.getAsset('track', { anchorX: 0, anchorY: 0, x: 0, y: i * 100 - 200 })); } // Create player player = game.addChild(new Player()); player.x = player.getLaneX(1); player.y = 2500; player.targetX = player.x; // Create police officer chasing behind police = game.addChild(new Police()); police.x = police.getLaneX(1); police.y = 2700; // Start behind player police.targetX = police.x; // UI Elements var distanceText = new Text2('Distance: 0m', { size: 60, fill: 0xFFFFFF }); distanceText.anchor.set(0, 0); LK.gui.topRight.addChild(distanceText); var coinText = new Text2('Coins: 0', { size: 60, fill: 0xFFD700 }); coinText.anchor.set(1, 0); coinText.x = -20; coinText.y = 80; LK.gui.topRight.addChild(coinText); // Touch controls game.down = function (x, y, obj) { swipeStartX = x; swipeStartY = y; isSwipeStarted = true; }; game.up = function (x, y, obj) { if (!isSwipeStarted) return; var deltaX = x - swipeStartX; var deltaY = y - swipeStartY; var swipeThreshold = 100; if (Math.abs(deltaX) > Math.abs(deltaY)) { // Horizontal swipe if (Math.abs(deltaX) > swipeThreshold) { if (deltaX > 0) { // Swipe right player.switchLane(player.currentLane + 1); } else { // Swipe left player.switchLane(player.currentLane - 1); } } } else { // Vertical swipe if (Math.abs(deltaY) > swipeThreshold) { if (deltaY < 0) { // Swipe up - jump player.jump(); } else { // Swipe down - slide player.slide(); } } } // Tap to jump if no swipe detected if (Math.abs(deltaX) < 50 && Math.abs(deltaY) < 50) { player.jump(); } isSwipeStarted = false; }; function spawnObstacle() { if (lastObstacleY > -800) return; var lane = Math.floor(Math.random() * 3); var type = Math.random() < 0.7 ? 'train' : 'barrier'; var obstacle = new Obstacle(type); obstacle.x = player.getLaneX(lane); obstacle.y = -200; obstacles.push(obstacle); game.addChild(obstacle); lastObstacleY = obstacle.y; } function spawnCoin() { if (lastCoinY > -400) return; var lane = Math.floor(Math.random() * 3); var coin = new Coin(); coin.x = player.getLaneX(lane); coin.y = -150; coins.push(coin); game.addChild(coin); lastCoinY = coin.y; } function spawnPowerUp() { if (Math.random() < 0.02) { // 2% chance per frame var lane = Math.floor(Math.random() * 3); var types = ['invincible', 'magnet']; var type = types[Math.floor(Math.random() * types.length)]; var powerup = new PowerUp(type); powerup.x = player.getLaneX(lane); powerup.y = -100; powerups.push(powerup); game.addChild(powerup); } } function checkCollisions() { // Check obstacle collisions for (var i = obstacles.length - 1; i >= 0; i--) { var obstacle = obstacles[i]; if (obstacle.y > 2800) { obstacle.destroy(); obstacles.splice(i, 1); continue; } // Check collision with player if (Math.abs(obstacle.x - player.x) < 100 && Math.abs(obstacle.y - player.y) < 100) { // Check if player can avoid collision var canAvoid = false; if (obstacle.obstacleType === 'barrier' && player.isJumping) { canAvoid = true; } else if (obstacle.obstacleType === 'train' && player.isSliding) { canAvoid = true; } if (!canAvoid && !player.invincible) { LK.getSound('crash').play(); // When player crashes, police catches them // Move police closer to simulate catching police.y = player.y + 30; LK.setTimeout(function () { LK.showGameOver(); }, 500); // Small delay to show police catching player return; } } } // Check coin collection for (var i = coins.length - 1; i >= 0; i--) { var coin = coins[i]; if (coin.y > 2800) { coin.destroy(); coins.splice(i, 1); continue; } var collectRadius = magnetTimer > 0 ? 200 : 60; if (Math.abs(coin.x - player.x) < collectRadius && Math.abs(coin.y - player.y) < collectRadius && !coin.collected) { coin.collected = true; coinCount++; LK.setScore(LK.getScore() + 10); LK.getSound('collect').play(); coin.destroy(); coins.splice(i, 1); } } // Check power-up collection for (var i = powerups.length - 1; i >= 0; i--) { var powerup = powerups[i]; if (powerup.y > 2800) { powerup.destroy(); powerups.splice(i, 1); continue; } if (Math.abs(powerup.x - player.x) < 80 && Math.abs(powerup.y - player.y) < 80 && !powerup.collected) { powerup.collected = true; if (powerup.powerType === 'invincible') { invincibleTimer = 300; // 5 seconds at 60fps player.invincible = true; } else if (powerup.powerType === 'magnet') { magnetTimer = 600; // 10 seconds at 60fps } powerup.destroy(); powerups.splice(i, 1); } } } game.update = function () { // Update distance and speed distance += gameSpeed; gameSpeed = baseSpeed + Math.floor(distance / 1000) * 0.5; // Update power-up timers if (invincibleTimer > 0) { invincibleTimer--; if (invincibleTimer <= 0) { player.invincible = false; } } if (magnetTimer > 0) { magnetTimer--; } // Update obstacle spawn positions lastObstacleY += gameSpeed; lastCoinY += gameSpeed; // Spawn new objects spawnObstacle(); spawnCoin(); spawnPowerUp(); // Update police officer police.speed = gameSpeed * 0.8; // Police moves slightly slower police.chasePlayer(player.currentLane); // Check if police catches player (when player hits obstacle) if (Math.abs(police.y - player.y) < 50) { // Police is close enough to catch player when they crash LK.showGameOver(); return; } // Update all objects for (var i = 0; i < obstacles.length; i++) { obstacles[i].speed = gameSpeed; } for (var i = 0; i < coins.length; i++) { coins[i].speed = gameSpeed; } for (var i = 0; i < powerups.length; i++) { powerups[i].speed = gameSpeed; } // Move background tracks var tracks = game.children.slice(0, 4); for (var i = 0; i < tracks.length; i++) { tracks[i].y += gameSpeed; if (tracks[i].y > 2732) { tracks[i].y -= 400; } } // Check collisions checkCollisions(); // Update UI distanceText.setText('Distance: ' + Math.floor(distance / 10) + 'm'); coinText.setText('Coins: ' + coinCount); };