/**** * Classes ****/ var Controller = Container.expand(function () { var self = Container.call(this); var controllerGraphics = self.attachAsset('controller', { anchorX: 0.5, anchorY: 0.5 }); self.alpha = 0.5; // Make the controller semi-transparent }); var EnemyBoss = Container.expand(function () { var self = Container.call(this); var enemyBossGraphics = self.attachAsset('Enemyboss', { anchorX: 0.5, anchorY: 0.5, scaleX: 2, scaleY: 2 }); self.health = 10; // Create a health bar self.healthBar = LK.getAsset('healthBar', { width: self.width, height: 10, anchorX: 0.5, anchorY: 0 }); self.addChild(self.healthBar); self.healthBar.y = -self.height / 2; self.shootTick = 120; // Set shootTick for boss to shoot every 2 seconds // Create a health bar self.healthBar = LK.getAsset('healthBar', { width: self.width, height: 10, anchorX: 0.5, anchorY: 0 }); self.addChild(self.healthBar); self.healthBar.y = -self.height / 2; self.stayTime = 0; self.lastX = self.x; self.lastY = self.y; self._move_migrated = function () { self.x += Math.cos(LK.ticks / 60) * 5; self.y += Math.sin(LK.ticks / 60) * 5; if (self.x < 0) { self.x = 0; } if (self.x > 2048 - self.width) { self.x = 2048 - self.width; } if (self.y < 0) { self.y = 0; } if (self.y > 2732 - self.height) { self.y = 2732 - self.height; } if (self.x === self.lastX && self.y === self.lastY) { self.stayTime++; } else { self.stayTime = 0; } if (self.stayTime >= 180) { self.x = Math.random() * (2048 - self.width); self.y = Math.random() * (2732 - self.height); self.stayTime = 0; } self.lastX = self.x; self.lastY = self.y; }; self.shoot = function () { var bullet = new EnemyBullet(); bullet.x = self.x; bullet.y = self.y + self.height / 2; game.addChild(bullet); enemyBullets.push(bullet); }; }); // EnemyBullet class var EnemyBullet = Container.expand(function () { var self = Container.call(this); var bulletGraphics = self.attachAsset('enemyBullet', { anchorX: 0.5, anchorY: 0.5 }); self._move_migrated = function () { self.y += 5; if (self.y > 2732 + self.height) { self.destroy(); enemyBullets.splice(enemyBullets.indexOf(self), 1); } }; }); // EnemyType1 class var EnemyType1 = Container.expand(function () { var self = Container.call(this); var enemyGraphics = self.attachAsset('enemy', { anchorX: 0.5, anchorY: 0.5, scaleX: 2, scaleY: 2 }); self.health = 2; self.shootTick = 600; // Set shootTick for enemy to shoot every 10 seconds // Create a health bar self.healthBar = LK.getAsset('healthBar', { width: self.width, height: 10, anchorX: 0.5, anchorY: 0 }); self.addChild(self.healthBar); self.healthBar.y = -self.height / 2; self._move_migrated = function () { self.y += Math.sin(LK.ticks / 60) * 5; self.x += Math.cos(LK.ticks / 60) * 5; if (self.y > 2732 - self.height) { self.y = 2732 - self.height; } if (self.y < 0) { self.y = 0; } if (self.x < 0) { self.x = 0; } if (self.x > 2048 - self.width) { self.x = 2048 - self.width; } }; self.shoot = function () { var bullet = new EnemyBullet(); bullet.x = self.x; bullet.y = self.y + self.height / 2; game.addChild(bullet); enemyBullets.push(bullet); }; }); // EnemyType2 class var EnemyType2 = Container.expand(function () { var self = Container.call(this); var enemyGraphics = self.attachAsset('enemy', { anchorX: 0.5, anchorY: 0.5, scaleX: 4, scaleY: 4 }); self.health = 4; self.shootTick = 600; // Set shootTick for enemy to shoot every 10 seconds // Create a health bar self.healthBar = LK.getAsset('healthBar', { width: self.width, height: 10, anchorX: 0.5, anchorY: 0 }); self.addChild(self.healthBar); self.healthBar.y = -self.height / 2; // Create a health bar self.healthBar = LK.getAsset('healthBar', { width: self.width, height: 10, anchorX: 0.5, anchorY: 0 }); self.addChild(self.healthBar); self.healthBar.y = -self.height / 2; self._move_migrated = function () { self.y += Math.sin(LK.ticks / 60) * 5; self.x += Math.cos(LK.ticks / 60) * 5; if (self.y > 2732 - self.height) { self.y = 2732 - self.height; } if (self.y < 0) { self.y = 0; } if (self.x < 0) { self.x = 0; } if (self.x > 2048 - self.width) { self.x = 2048 - self.width; } }; self.shoot = function () { var bullet1 = new EnemyBullet(); bullet1.x = self.x - self.width / 4; bullet1.y = self.y + self.height / 2; game.addChild(bullet1); enemyBullets.push(bullet1); var bullet2 = new EnemyBullet(); bullet2.x = self.x + self.width / 4; bullet2.y = self.y + self.height / 2; game.addChild(bullet2); enemyBullets.push(bullet2); }; }); var EnemyType3 = Container.expand(function () { var self = Container.call(this); var enemyGraphics = self.attachAsset('enemy', { anchorX: 0.5, anchorY: 0.5, scaleX: 2, scaleY: 2 }); self.health = 2; self.shootTick = 600; // Set shootTick for enemy to shoot every 10 seconds // Create a health bar self.healthBar = LK.getAsset('healthBar', { width: self.width, height: 10, anchorX: 0.5, anchorY: 0 }); self.addChild(self.healthBar); self.healthBar.y = -self.height / 2; self._move_migrated = function () { self.y += Math.sin(LK.ticks / 60) * 5; self.x += Math.cos(LK.ticks / 60) * 5; if (self.y > 2732 - self.height) { self.y = 2732 - self.height; } if (self.y < 0) { self.y = 0; } if (self.x < 0) { self.x = 0; } if (self.x > 2048 - self.width) { self.x = 2048 - self.width; } }; }); var Explosion = Container.expand(function () { var self = Container.call(this); self.frames = 30; // 0.5 seconds at 60FPS self._update_migrated = function () { if (self.frames > 0) { self.alpha = self.frames / 30; self.scaleX += 0.1; self.scaleY += 0.1; self.frames--; } else { self.destroy(); } }; // After 2 seconds, destroy the explosion LK.setTimeout(function () { self.destroy(); }, 500); self.attachAsset('explosion', { anchorX: 0.5, anchorY: 0.5 }); }); var GoldenBadge = Container.expand(function () { var self = Container.call(this); self.on('down', function (x, y, obj) { self.destroy(); LK.resumeGame(); }); self.attachAsset('goldenBadge', { anchorX: 0.5, anchorY: 0.5 }); }); // Hero class var Hero = Container.expand(function () { var self = Container.call(this); var heroGraphics = self.attachAsset('hero', { anchorX: 0.5, anchorY: 0.5 }); self.minions = []; self.health = 3; // Add health property to Hero // Create a health bar self.healthBar = LK.getAsset('healthBar', { width: self.width, height: 10, anchorX: 0.5, anchorY: 0 }); self.addChild(self.healthBar); self.healthBar.y = -self.height / 2; // Position health bar above the hero self.shoot = function () { var bullet = new HeroBullet(); bullet.x = self.x; bullet.y = self.y - self.height / 2; game.addChild(bullet); heroBullets.push(bullet); self.minions.forEach(function (minion) { minion.shoot(); }); }; }); // HeroBullet class var HeroBullet = Container.expand(function () { var self = Container.call(this); var bulletGraphics = self.attachAsset('heroBullet', { anchorX: 0.5, anchorY: 0.5 }); self._move_migrated = function () { self.y -= 10; if (self.y < -self.height) { self.destroy(); heroBullets.splice(heroBullets.indexOf(self), 1); } }; }); var SpaceBackground = Container.expand(function () { var self = Container.call(this); self.attachAsset('spaceBackground', { anchorX: 0.5, anchorY: 0.5 }); var planet1 = self.attachAsset('planet1', { anchorX: 0.5, anchorY: 0.5, x: 500, y: 600 }); var planet2 = self.attachAsset('planet2', { anchorX: 0.5, anchorY: 0.5, x: 1500, y: 2000 }); var stars = []; for (var i = 0; i < 100; i++) { var star = self.attachAsset('star', { anchorX: 0.5, anchorY: 0.5, x: Math.random() * 2048, y: Math.random() * 2732 }); stars.push(star); } }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x000020 // Init game with cosmic background color }); /**** * Game Code ****/ var spaceBackground = game.addChild(new SpaceBackground()); spaceBackground.x = 2048 / 2; spaceBackground.y = 2732 / 2; // Define the assets for the hero, enemy robots, and bullets // Initialize hero var hero = game.addChild(new Hero()); hero.x = 2048 / 2; hero.y = 2732 - 100; // Initialize enemy, bullet, and minion arrays var enemies = []; var heroBullets = []; var enemyBullets = []; var minions = []; // Spawn boss at start of game var enemyBoss = new EnemyBoss(); enemyBoss.x = 2048 / 2; enemyBoss.y = 0; game.addChild(enemyBoss); enemies.push(enemyBoss); // Add controllers to the game var leftController = game.addChild(new Controller()); leftController.x = 200; leftController.y = 2732 - 200; var rightController = game.addChild(new Controller()); rightController.x = 2048 - 200; rightController.y = 2732 - 200; // Handle shooting and moving the hero game.on('down', function (x, y, obj) { hero.shoot(); }); // Handle swipe game.on('move', function (x, y, obj) { var event = obj; var pos = game.toLocal(event.global); hero.x = pos.x; hero.y = pos.y; }); // Handle touch up game.on('up', function (x, y, obj) { hero.shoot(); }); // Handle swipe game.on('move', function (x, y, obj) { var event = obj; var pos = game.toLocal(event.global); hero.x = pos.x; hero.y = pos.y; }); // Initialize 20 minutes timer and kill count var timer = 20 * 60; var killCount = 0; // Create a timer text object var timerTxt = new Text2('20:00', { size: 100, fill: '#ffffff' }); // Attach the timer text object to the top right corner of the screen LK.gui.topRight.addChild(timerTxt); // Create a kill count text object var killCountTxt = new Text2('Kills: 0', { size: 100, fill: '#ffffff' }); // Attach the kill count text object to the top left corner of the screen LK.gui.topLeft.addChild(killCountTxt); // Game tick event LK.on('tick', function () { // Update timer every second if (LK.ticks % 60 == 0) { timer--; // Update timer text var minutes = Math.floor(timer / 60); var seconds = timer % 60; timerTxt.setText(minutes + ':' + (seconds < 10 ? '0' : '') + seconds); } // Move hero bullets for (var i = heroBullets.length - 1; i >= 0; i--) { heroBullets[i]._move_migrated(); } // Move enemy bullets for (var j = enemyBullets.length - 1; j >= 0; j--) { enemyBullets[j]._move_migrated(); } // Move enemies and randomly shoot for (var k = enemies.length - 1; k >= 0; k--) { enemies[k]._move_migrated(); // Update the health bar if (self && self.healthBar) { self.healthBar.width = self.health / 10 * self.width; } // Enemies shoot based on their unique shootTick value if (enemies[k].shootTick && LK.ticks % enemies[k].shootTick === 0) { enemies[k].shoot(); } } // Spawn enemies if (LK.ticks % 120 == 0) { var enemy = new EnemyType1(); enemy.x = Math.random() * (2048 - enemy.width) + enemy.width / 2; enemy.y = -enemy.height; // Assign a unique shootTick value to each enemy enemy.shootTick = 120 + Math.floor(Math.random() * 60); game.addChild(enemy); enemies.push(enemy); } // Spawn enemy boss every six minutes if (LK.ticks % (60 * 60 * 6) == 0) { var enemyBoss = new EnemyBoss(); enemyBoss.x = Math.random() * (2048 - enemyBoss.width) + enemyBoss.width / 2; enemyBoss.y = -enemyBoss.height; // Assign a unique shootTick value to each enemy boss enemyBoss.shootTick = 120 + Math.floor(Math.random() * 60); game.addChild(enemyBoss); enemies.push(enemyBoss); } if (LK.ticks % 72000 == 0 && enemies.length == 0) { var goldenBadge = new GoldenBadge(); goldenBadge.x = 2048 / 2; goldenBadge.y = 2732 / 2; game.addChild(goldenBadge); LK.pauseGame(); } // Check for collisions between hero bullets and enemies for (var h = heroBullets.length - 1; h >= 0; h--) { for (var e = enemies.length - 1; e >= 0; e--) { if (heroBullets[h].intersects(enemies[e])) { var explosion = new Explosion(); explosion.x = enemies[e].x; explosion.y = enemies[e].y; game.addChild(explosion); heroBullets[h].destroy(); heroBullets.splice(h, 1); enemies[e].health -= 1; if (enemies[e].health <= 0) { // Remove all bullets of the defeated enemy boss for (var b = enemyBullets.length - 1; b >= 0; b--) { if (enemyBullets[b].x === enemies[e].x && enemyBullets[b].y === enemies[e].y) { enemyBullets[b].destroy(); enemyBullets.splice(b, 1); } } // Remove all bullets of the defeated enemy for (var b = enemyBullets.length - 1; b >= 0; b--) { if (enemyBullets[b].x === enemies[e].x && enemyBullets[b].y === enemies[e].y) { enemyBullets[b].destroy(); enemyBullets.splice(b, 1); } } enemies[e].destroy(); enemies.splice(e, 1); // Increment kill count by 2 if enemy is EnemyBoss, otherwise by 1 var killIncrement = enemies[e] instanceof EnemyBoss ? 2 : 1; killCount += killIncrement; killCountTxt.setText('Kills: ' + killCount); } break; } } } // Check for collisions between hero bullets and enemy bullets for (var hb = heroBullets.length - 1; hb >= 0; hb--) { for (var eb = enemyBullets.length - 1; eb >= 0; eb--) { if (heroBullets[hb].intersects(enemyBullets[eb])) { var explosion = new Explosion(); explosion.x = (heroBullets[hb].x + enemyBullets[eb].x) / 2; explosion.y = (heroBullets[hb].y + enemyBullets[eb].y) / 2; game.addChild(explosion); heroBullets[hb].destroy(); heroBullets.splice(hb, 1); enemyBullets[eb].destroy(); enemyBullets.splice(eb, 1); break; } } } // Check for collisions between enemy bullets and hero for (var eb = enemyBullets.length - 1; eb >= 0; eb--) { if (enemyBullets[eb].intersects(hero)) { // Flash screen red for 1 second (1000ms) to show damage taken LK.effects.flashScreen(0xff0000, 1000); // Show game over LK.showGameOver(); break; } } });