/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); /**** * Classes ****/ var Asteroid = Container.expand(function () { var self = Container.call(this); var asteroidGraphics = self.attachAsset('asteroid', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 5 + Math.random() * 4; self.rotationSpeed = (Math.random() - 0.5) * 0.1; self.update = function () { self.y += self.speed; asteroidGraphics.rotation += self.rotationSpeed; }; return self; }); var Bullet = Container.expand(function () { var self = Container.call(this); var bulletGraphics = self.attachAsset('bullet', { anchorX: 0.5, anchorY: 0.5 }); self.speed = -12; self.update = function () { self.y += self.speed; }; return self; }); var Enemy = Container.expand(function () { var self = Container.call(this); var enemyGraphics = self.attachAsset('enemy', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 2 + Math.random() * 3; self.shootTimer = Math.floor(Math.random() * 120) + 60; self.health = 1; self.update = function () { self.y += self.speed; self.shootTimer--; if (self.shootTimer <= 0 && self.y < 2500) { self.shoot(); self.shootTimer = 60 + Math.floor(Math.random() * 60); } }; self.shoot = function () { var bullet = new EnemyBullet(); bullet.x = self.x; bullet.y = self.y + 40; enemyBullets.push(bullet); game.addChild(bullet); }; self.takeDamage = function () { self.health--; if (self.health <= 0) { self.destroy(); LK.setScore(LK.getScore() + 10); LK.getSound('enemyDestroy').play(); } }; return self; }); var EnemyBullet = Container.expand(function () { var self = Container.call(this); var bulletGraphics = self.attachAsset('enemyBullet', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 10; self.update = function () { self.y += self.speed; }; return self; }); var PowerUp = Container.expand(function () { var self = Container.call(this); var powerUpGraphics = self.attachAsset('powerUp', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 10; self.pulseTimer = 0; self.update = function () { self.y += self.speed; self.pulseTimer += 0.1; powerUpGraphics.scaleX = 1 + Math.sin(self.pulseTimer) * 0.3; powerUpGraphics.scaleY = 1 + Math.sin(self.pulseTimer) * 0.3; }; return self; }); var Spaceship = Container.expand(function () { var self = Container.call(this); var spaceshipGraphics = self.attachAsset('spaceship', { anchorX: 0.5, anchorY: 0.5 }); self.health = 5; self.fireRate = 5; self.fireTimer = 1; self.powerUpTimer = 0; self.hasPowerUp = false; self.update = function () { if (self.fireTimer > 0) { self.fireTimer--; } if (self.powerUpTimer > 0) { self.powerUpTimer--; spaceshipGraphics.tint = 0x00FFFF; } else { self.hasPowerUp = false; spaceshipGraphics.tint = 0xFFFFFF; } }; self.shoot = function () { if (self.fireTimer <= 0) { var bullet = new Bullet(); bullet.x = self.x; bullet.y = self.y - 50; bullets.push(bullet); game.addChild(bullet); self.fireTimer = self.hasPowerUp ? 5 : self.fireRate; LK.getSound('shoot').play(); } }; self.takeDamage = function () { self.health--; LK.effects.flashObject(self, 0xFF0000, 500); if (self.health <= 0) { LK.getSound('explosion').play(); LK.showGameOver(); } }; self.applyPowerUp = function () { self.hasPowerUp = true; self.powerUpTimer = 300; // 5 seconds at 60fps LK.getSound('powerUpCollect').play(); }; return self; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x222222 }); /**** * Game Code ****/ // Game variables var spaceship; var enemies = []; var asteroids = []; var bullets = []; var enemyBullets = []; var powerUps = []; var dragNode = null; var spawnTimer = 0; var waveTimer = 0; var difficultyLevel = 1; var lastSpaceshipX = 0; var lastSpaceshipY = 0; // UI Elements var scoreText = new Text2('XP: 0', { size: 75, fill: 0xFFFFFF }); scoreText.anchor.set(0, 0); scoreText.x = 120; scoreText.y = 50; LK.gui.topLeft.addChild(scoreText); var healthText = new Text2('Health: 3', { size: 120, fill: 0x00FF00 }); healthText.anchor.set(1, 0); LK.gui.topRight.addChild(healthText); // Initialize spaceship spaceship = game.addChild(new Spaceship()); spaceship.x = 1024; spaceship.y = 2400; lastSpaceshipX = spaceship.x; lastSpaceshipY = spaceship.y; // Touch controls function handleMove(x, y, obj) { if (dragNode) { dragNode.x = Math.max(40, Math.min(2008, x)); dragNode.y = Math.max(100, Math.min(2632, y)); } } game.move = handleMove; game.down = function (x, y, obj) { dragNode = spaceship; handleMove(x, y, obj); }; game.up = function (x, y, obj) { dragNode = null; }; // Spawn functions function spawnEnemy() { var enemy = new Enemy(); enemy.x = Math.random() * 1800 + 124; enemy.y = -80; enemies.push(enemy); game.addChild(enemy); } function spawnAsteroid() { var asteroid = new Asteroid(); asteroid.x = Math.random() * 1800 + 124; asteroid.y = -120; asteroids.push(asteroid); game.addChild(asteroid); } function spawnPowerUp() { var powerUp = new PowerUp(); powerUp.x = Math.random() * 1800 + 124; powerUp.y = -40; powerUps.push(powerUp); game.addChild(powerUp); } // Game update loop game.update = function () { // Update UI scoreText.setText('Score: ' + LK.getScore()); healthText.setText('Health: ' + spaceship.health); // Auto-shoot spaceship.shoot(); // Spawn management spawnTimer++; waveTimer++; if (waveTimer >= 1800) { // Every 30 seconds increase difficulty difficultyLevel++; waveTimer = 0; } var spawnRate = Math.max(30, 90 - difficultyLevel * 2); if (spawnTimer >= spawnRate) { if (Math.random() < 0.7) { spawnEnemy(); } if (Math.random() < 0.4) { spawnAsteroid(); } if (Math.random() < 0.05) { spawnPowerUp(); } spawnTimer = 0; } // Check spaceship movement for collision detection var spaceshipMoved = spaceship.x !== lastSpaceshipX || spaceship.y !== lastSpaceshipY; lastSpaceshipX = spaceship.x; lastSpaceshipY = spaceship.y; // Update and check bullets for (var i = bullets.length - 1; i >= 0; i--) { var bullet = bullets[i]; if (bullet.y < -20) { bullet.destroy(); bullets.splice(i, 1); continue; } // Check bullet-enemy collisions for (var j = enemies.length - 1; j >= 0; j--) { var enemy = enemies[j]; if (bullet.intersects(enemy)) { bullet.destroy(); bullets.splice(i, 1); enemy.takeDamage(); if (enemy.health <= 0) { enemies.splice(j, 1); } break; } } } // Update and check enemy bullets for (var i = enemyBullets.length - 1; i >= 0; i--) { var bullet = enemyBullets[i]; if (bullet.y > 2752) { bullet.destroy(); enemyBullets.splice(i, 1); continue; } // Check enemy bullet-spaceship collision if (bullet.intersects(spaceship)) { bullet.destroy(); enemyBullets.splice(i, 1); spaceship.takeDamage(); } } // Update and check enemies for (var i = enemies.length - 1; i >= 0; i--) { var enemy = enemies[i]; if (enemy.y > 2800) { enemy.destroy(); enemies.splice(i, 1); continue; } // Check enemy-spaceship collision if (enemy.intersects(spaceship)) { enemy.destroy(); enemies.splice(i, 1); spaceship.takeDamage(); } } // Update and check asteroids for (var i = asteroids.length - 1; i >= 0; i--) { var asteroid = asteroids[i]; if (asteroid.y > 2800) { asteroid.destroy(); asteroids.splice(i, 1); continue; } // Check asteroid-spaceship collision if (asteroid.intersects(spaceship)) { asteroid.destroy(); asteroids.splice(i, 1); spaceship.takeDamage(); } // Check bullet-asteroid collisions for (var j = bullets.length - 1; j >= 0; j--) { var bullet = bullets[j]; if (bullet.intersects(asteroid)) { bullet.destroy(); bullets.splice(j, 1); asteroid.destroy(); asteroids.splice(i, 1); LK.setScore(LK.getScore() + 5); break; } } } // Update and check power-ups for (var i = powerUps.length - 1; i >= 0; i--) { var powerUp = powerUps[i]; if (powerUp.y > 2800) { powerUp.destroy(); powerUps.splice(i, 1); continue; } // Check power-up collection if (powerUp.intersects(spaceship)) { powerUp.destroy(); powerUps.splice(i, 1); spaceship.applyPowerUp(); LK.setScore(LK.getScore() + 25); } } }; // Start background music LK.playMusic('spaceMusic');