/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); var storage = LK.import("@upit/storage.v1", { highScore: 0, carUpgrades: { speed: 1, handling: 1, fuel: 1 } }); /**** * Classes ****/ var Collectible = Container.expand(function (type) { var self = Container.call(this); self.type = type || 'fuel'; var assetType = self.type === 'fuel' ? 'fuelCan' : 'powerup'; var collectibleGraphics = self.attachAsset(assetType, { anchorX: 0.5, anchorY: 0.5 }); self.active = true; self.update = function () { if (!self.active) { return; } // Move collectible upward (towards the player) self.y -= gameSpeed; // Rotate slightly for visual effect self.rotation += 0.01; // Remove collectible when it goes off screen if (self.y < -100) { self.active = false; } }; return self; }); var Obstacle = Container.expand(function () { var self = Container.call(this); var obstacleGraphics = self.attachAsset('obstacle', { anchorX: 0.5, anchorY: 0.5 }); self.active = true; self.update = function () { if (!self.active) { return; } // Move obstacle upward (towards the player) self.y -= gameSpeed; // Remove obstacle when it goes off screen if (self.y < -100) { self.active = false; } }; return self; }); var Player = Container.expand(function () { var self = Container.call(this); var carGraphics = self.attachAsset('player', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 0; self.maxSpeed = 10 + storage.carUpgrades.speed * 2; self.handling = 0.2 + storage.carUpgrades.handling * 0.1; self.maxFuel = 100 + storage.carUpgrades.fuel * 20; self.fuel = self.maxFuel; self.fuelConsumption = 0.1; self.invulnerable = false; self.update = function () { // Update fuel self.fuel -= self.fuelConsumption; if (self.fuel <= 0) { LK.showGameOver(); } // Update speed properties if (self.speed < self.maxSpeed) { self.speed += 0.1; } // Update invulnerability if (self.invulnerable && self._invulnerableTimer) { self._invulnerableTimer--; // Flash effect during invulnerability carGraphics.alpha = LK.ticks % 10 < 5 ? 0.5 : 1; if (self._invulnerableTimer <= 0) { self.invulnerable = false; carGraphics.alpha = 1; } } }; self.setInvulnerable = function (duration) { self.invulnerable = true; self._invulnerableTimer = duration; }; self.crash = function () { if (!self.invulnerable) { // Reduce speed on crash self.speed = Math.max(self.speed * 0.5, 2); LK.getSound('crash').play(); // Shake effect tween(self, { x: self.x + 20 }, { duration: 100, easing: tween.easeOut, onFinish: function onFinish() { tween(self, { x: self.x - 40 }, { duration: 100, easing: tween.easeInOut, onFinish: function onFinish() { tween(self, { x: self.x + 20 }, { duration: 100, easing: tween.easeIn }); } }); } }); // Temporary invulnerability self.setInvulnerable(60); return true; } return false; }; return self; }); var Road = Container.expand(function () { var self = Container.call(this); var roadGraphics = self.attachAsset('road', { anchorX: 0.5, anchorY: 0.5 }); // Road lines for visual effect self.lines = []; var lineSpacing = 400; var numLines = 8; for (var i = 0; i < numLines; i++) { var line = self.attachAsset('roadLine', { anchorX: 0.5, anchorY: 0.5, x: 0, y: -2732 / 2 + i * lineSpacing }); self.lines.push(line); } self.update = function () { // Move the road lines down to create illusion of movement var speed = gameSpeed; for (var i = 0; i < self.lines.length; i++) { self.lines[i].y += speed; // Reset the line position when it goes off screen if (self.lines[i].y > 2732 / 2 + self.lines[i].height) { self.lines[i].y = -2732 / 2; } } }; return self; }); var Zombie = Container.expand(function () { var self = Container.call(this); var zombieGraphics = self.attachAsset('zombie', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 0; self.baseSpeed = 2; self.active = true; self.update = function () { if (!self.active) { return; } // Move zombie upward (towards the player) self.y -= self.speed; // Slightly move toward road center to follow player if (self.x < roadCenterX) { self.x += 0.5; } else if (self.x > roadCenterX) { self.x -= 0.5; } // Remove zombie when it goes off screen if (self.y < -100) { self.active = false; } }; return self; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x222222 }); /**** * Game Code ****/ // Game variables var roadWidth = 1500; var roadCenterX = 2048 / 2; var gameSpeed = 8; var score = 0; var distance = 0; var difficultyTimer = 0; var difficultyLevel = 1; var roadLeftEdge = roadCenterX - roadWidth / 2; var roadRightEdge = roadCenterX + roadWidth / 2; var zombies = []; var obstacles = []; var collectibles = []; var lastZombieSpawn = 0; var lastObstacleSpawn = 0; var lastCollectibleSpawn = 0; var zombieSpawnInterval = 120; var obstacleSpawnInterval = 180; var collectibleSpawnInterval = 300; var dragPosition = null; var isGameStarted = false; // Create road var road = new Road(); road.x = roadCenterX; road.y = 2732 / 2; game.addChild(road); // Create player var player = new Player(); player.x = roadCenterX; player.y = 2732 - 400; game.addChild(player); // UI Elements var scoreTxt = new Text2('0', { size: 80, fill: 0xFFFFFF }); scoreTxt.anchor.set(0.5, 0); LK.gui.top.addChild(scoreTxt); var distanceTxt = new Text2('0m', { size: 60, fill: 0xCCCCCC }); distanceTxt.anchor.set(0.5, 0); distanceTxt.y = 90; LK.gui.top.addChild(distanceTxt); var fuelBarContainer = new Container(); fuelBarContainer.x = 150; fuelBarContainer.y = 70; LK.gui.topRight.addChild(fuelBarContainer); var fuelBarBg = LK.getAsset('obstacle', { anchorX: 0, anchorY: 0, width: 300, height: 40, tint: 0x333333 }); fuelBarContainer.addChild(fuelBarBg); var fuelBar = LK.getAsset('obstacle', { anchorX: 0, anchorY: 0, width: 300, height: 40, tint: 0xff3300 }); fuelBarContainer.addChild(fuelBar); var fuelTxt = new Text2('FUEL', { size: 30, fill: 0xFFFFFF }); fuelTxt.x = 150; fuelTxt.y = 20; fuelTxt.anchor.set(0.5, 0.5); fuelBarContainer.addChild(fuelTxt); // Game functions function spawnZombie() { var zombie = new Zombie(); // Position zombie below the screen zombie.y = 2732 + 200; // Random x position on the road zombie.x = roadLeftEdge + 100 + Math.random() * (roadWidth - 200); // Set zombie speed based on difficulty zombie.speed = zombie.baseSpeed + difficultyLevel * 0.2; zombies.push(zombie); game.addChild(zombie); lastZombieSpawn = LK.ticks; // Play zombie sound occasionally if (Math.random() < 0.3) { LK.getSound('zombieGroan').play(); } } function spawnObstacle() { var obstacle = new Obstacle(); // Position obstacle below the screen obstacle.y = 2732 + 200; // Random x position on the road obstacle.x = roadLeftEdge + 100 + Math.random() * (roadWidth - 200); obstacles.push(obstacle); game.addChild(obstacle); lastObstacleSpawn = LK.ticks; } function spawnCollectible() { var type = Math.random() < 0.7 ? 'fuel' : 'powerup'; var collectible = new Collectible(type); // Position collectible below the screen collectible.y = 2732 + 200; // Random x position on the road collectible.x = roadLeftEdge + 100 + Math.random() * (roadWidth - 200); collectibles.push(collectible); game.addChild(collectible); lastCollectibleSpawn = LK.ticks; } function updateDifficulty() { difficultyTimer++; // Increase difficulty every 600 ticks (10 seconds) if (difficultyTimer >= 600) { difficultyLevel++; difficultyTimer = 0; // Decrease spawn intervals zombieSpawnInterval = Math.max(30, zombieSpawnInterval - 10); obstacleSpawnInterval = Math.max(60, obstacleSpawnInterval - 10); // Increase game speed gameSpeed = Math.min(15, gameSpeed + 0.5); } } function checkCollisions() { // Check zombie collisions for (var i = zombies.length - 1; i >= 0; i--) { var zombie = zombies[i]; if (zombie.active && zombie.intersects(player)) { // Player hit zombie if (player.crash()) { score += 5; zombie.active = false; tween(zombie, { alpha: 0 }, { duration: 300, onFinish: function onFinish() { zombie.destroy(); } }); zombies.splice(i, 1); } } // Clean up inactive zombies if (!zombie.active) { zombie.destroy(); zombies.splice(i, 1); } } // Check obstacle collisions for (var i = obstacles.length - 1; i >= 0; i--) { var obstacle = obstacles[i]; if (obstacle.active && obstacle.intersects(player)) { // Player hit obstacle if (player.crash()) { player.fuel = Math.max(0, player.fuel - 15); obstacle.active = false; tween(obstacle, { alpha: 0 }, { duration: 300, onFinish: function onFinish() { obstacle.destroy(); } }); obstacles.splice(i, 1); } } // Clean up inactive obstacles if (!obstacle.active) { obstacle.destroy(); obstacles.splice(i, 1); } } // Check collectible collisions for (var i = collectibles.length - 1; i >= 0; i--) { var collectible = collectibles[i]; if (collectible.active && collectible.intersects(player)) { // Player collected item LK.getSound('pickup').play(); if (collectible.type === 'fuel') { // Refill fuel player.fuel = Math.min(player.maxFuel, player.fuel + 30); score += 10; } else { // Power-up (temporary invulnerability) player.setInvulnerable(180); score += 20; } collectible.active = false; tween(collectible, { alpha: 0, scaleX: 2, scaleY: 2 }, { duration: 300, onFinish: function onFinish() { collectible.destroy(); } }); collectibles.splice(i, 1); } // Clean up inactive collectibles if (!collectible.active) { collectible.destroy(); collectibles.splice(i, 1); } } } function updateUI() { // Update score and distance text scoreTxt.setText('SCORE: ' + score); distanceTxt.setText('DISTANCE: ' + Math.floor(distance) + 'm'); // Update fuel bar var fuelPercentage = player.fuel / player.maxFuel; fuelBar.width = 300 * fuelPercentage; // Change fuel bar color based on fuel level if (fuelPercentage < 0.3) { fuelBar.tint = 0xff0000; // Red for low fuel } else if (fuelPercentage < 0.6) { fuelBar.tint = 0xffcc00; // Yellow for medium fuel } else { fuelBar.tint = 0x00cc00; // Green for high fuel } } function startGame() { if (!isGameStarted) { isGameStarted = true; // Reset game variables gameSpeed = 8; score = 0; distance = 0; difficultyTimer = 0; difficultyLevel = 1; // Play background music LK.playMusic('gameMusic', { fade: { start: 0, end: 0.7, duration: 1000 } }); // Start engine sound LK.getSound('engineRev').play(); } } // Drag handling function handleMove(x, y, obj) { if (dragPosition) { // Calculate drag delta var deltaX = x - dragPosition.x; // Move player with handling factor player.x += deltaX * player.handling; // Keep player within road boundaries player.x = Math.max(roadLeftEdge + player.width / 2, Math.min(roadRightEdge - player.width / 2, player.x)); // Update drag position dragPosition = { x: x, y: y }; } } // Touch events game.down = function (x, y, obj) { startGame(); dragPosition = { x: x, y: y }; handleMove(x, y, obj); }; game.move = handleMove; game.up = function (x, y, obj) { dragPosition = null; }; // Main game loop game.update = function () { if (!isGameStarted) { return; } // Update game elements player.update(); // Spawn enemies and collectibles if (LK.ticks - lastZombieSpawn > zombieSpawnInterval) { spawnZombie(); } if (LK.ticks - lastObstacleSpawn > obstacleSpawnInterval) { spawnObstacle(); } if (LK.ticks - lastCollectibleSpawn > collectibleSpawnInterval) { spawnCollectible(); } // Update entities for (var i = 0; i < zombies.length; i++) { zombies[i].update(); } for (var i = 0; i < obstacles.length; i++) { obstacles[i].update(); } for (var i = 0; i < collectibles.length; i++) { collectibles[i].update(); } // Check collisions checkCollisions(); // Update difficulty updateDifficulty(); // Update score and distance distance += gameSpeed / 60; score = Math.floor(distance) + score; // Update UI updateUI(); // Check for game over if (player.fuel <= 0) { // Update high score if (score > storage.highScore) { storage.highScore = score; } LK.showGameOver(); } };