/**** * Classes ****/ // Bullet class var Bullet = Container.expand(function () { var self = Container.call(this); var bulletGraphics = self.attachAsset('bullet', { anchorX: 0.5, anchorY: 0.5 }); self.speed = -10; self.update = function () { self.y += self.speed; if (self.y < 0) { self.destroy(); } }; }); // Obstacle class var Obstacle = Container.expand(function () { var self = Container.call(this); var obstacleGraphics = self.attachAsset('obstacle', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 5; self.update = function () { self.y += self.speed; if (self.y > 2732) { self.y = -100; self.x = Math.random() * 2048; } }; }); // PowerUp class var PowerUp = Container.expand(function () { var self = Container.call(this); var powerUpGraphics = self.attachAsset('powerUp', { anchorX: 0.5, anchorY: 0.5 }); self.update = function () { self.y += 3; if (self.y > 2732) { self.y = -100; self.x = Math.random() * 2048; } }; }); // // // Spaceship class var Spaceship = Container.expand(function () { var self = Container.call(this); var spaceshipGraphics = self.attachAsset('spaceship', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 10; self.update = function () { // Spaceship update logic }; self.move = function (x, y) { self.x = x; self.y = y; }; self.shoot = function () { var bullet = new Bullet(); bullet.x = self.x; bullet.y = self.y; game.addChild(bullet); }; }); // Star class var Star = Container.expand(function () { var self = Container.call(this); var starGraphics = self.attachAsset('star', { anchorX: 0.5, anchorY: 0.5, scaleX: Math.random() * 0.5 + 0.5, scaleY: Math.random() * 0.5 + 0.5 }); self.speed = Math.random() * 3 + 1; self.update = function () { self.y += self.speed; if (self.y > 2732) { self.y = -100; self.x = Math.random() * 2048; } }; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x000000 //Init game with black background }); /**** * Game Code ****/ // Initialize game elements if (!spaceship) { var spaceship = game.addChild(new Spaceship()); spaceship.x = 1024; spaceship.y = 2400; } var stars = []; for (var i = 0; i < 200; i++) { var star = new Star(); star.x = Math.random() * 2048; star.y = Math.random() * -2732; stars.push(star); game.addChild(star); } var obstacles = []; for (var i = 0; i < 5; i++) { var obstacle = new Obstacle(); obstacle.x = Math.random() * 2048; obstacle.y = Math.random() * -2732; obstacles.push(obstacle); game.addChild(obstacle); } var powerUps = []; for (var i = 0; i < 3; i++) { var powerUp = new PowerUp(); powerUp.x = Math.random() * 2048; powerUp.y = Math.random() * -2732; powerUps.push(powerUp); game.addChild(powerUp); } // Handle game events game.down = function (x, y, obj) { spaceship.move(x, y); spaceship.shoot(); }; game.update = function () { for (var i = 0; i < obstacles.length; i++) { obstacles[i].update(); if (spaceship.intersects(obstacles[i])) { LK.effects.flashScreen(0xff0000, 1000); LK.showGameOver(); } for (var j = 0; j < game.children.length; j++) { if (game.children[j] instanceof Bullet && game.children[j].intersects(obstacles[i])) { obstacles[i].destroy(); obstacles.splice(i, 1); game.children[j].destroy(); break; } } } for (var i = 0; i < stars.length; i++) { stars[i].update(); } for (var i = 0; i < powerUps.length; i++) { powerUps[i].update(); if (spaceship.intersects(powerUps[i])) { LK.setScore(LK.getScore() + 10); powerUps[i].destroy(); powerUps.splice(i, 1); } } };