/**** * Classes ****/ var Powerup = Container.expand(function (type) { var self = Container.call(this); self.type = type; var powerupGraphics; switch (type) { case 'extraBullet': powerupGraphics = LK.getAsset('extraBulletPowerup', { anchorX: 0.5, anchorY: 0.5 }); break; case 'shield': powerupGraphics = LK.getAsset('shieldPowerup', { anchorX: 0.5, anchorY: 0.5 }); break; case 'speed': powerupGraphics = LK.getAsset('speedPowerup', { anchorX: 0.5, anchorY: 0.5 }); break; case 'health': powerupGraphics = LK.getAsset('healthPowerup', { anchorX: 0.5, anchorY: 0.5 }); break; case 'missileSpeed': powerupGraphics = LK.getAsset('missileSpeedPowerup', { anchorX: 0.5, anchorY: 0.5 }); break; case 'curveBullet': powerupGraphics = LK.getAsset('curveBulletPowerup', { anchorX: 0.5, anchorY: 0.5 }); break; case 'scoreMultiplier': powerupGraphics = LK.getAsset('scoreMultiplierPowerup', { anchorX: 0.5, anchorY: 0.5 }); break; default: powerupGraphics = LK.getAsset('powerup', { anchorX: 0.5, anchorY: 0.5 }); break; } self.addChild(powerupGraphics); self.speed = 3; self.move = function () { self.y += self.speed; }; }); var HealthBar = Container.expand(function (maxHealth, color) { var self = Container.call(this); var barGraphics = LK.getAsset('healthBar', { anchorX: 0.5, anchorY: 1 }); barGraphics.tint = color; self.addChild(barGraphics); self.maxHealth = maxHealth; self.currentHealth = maxHealth; self.updateHealth = function (newHealth) { self.currentHealth = newHealth; barGraphics.scale.x = self.currentHealth / self.maxHealth; }; self.intersectable = false; }); var HeroBullet = Container.expand(function (acceleration, enemies, curveBullet) { var self = Container.call(this); var bulletGraphics = LK.getAsset('heroBullet', { anchorX: 0.5, anchorY: 0.5 }); self.addChild(bulletGraphics); self.speed = 10; self.acceleration = 0.2; self.curveBullet = curveBullet || 0; self.move = function () { self.speed += self.acceleration; var speedX = 0; var speedY = -self.speed; if (self.curveBullet > 0 && enemies.length > 0) { var nearestEnemy = enemies.reduce(function (nearest, enemy) { var dx = self.x - enemy.x; var dy = self.y - enemy.y; var distance = Math.sqrt(dx * dx + dy * dy); return distance < nearest.distance ? { enemy: enemy, distance: distance } : nearest; }, { enemy: null, distance: Infinity }); if (nearestEnemy.enemy) { var angle = Math.atan2(nearestEnemy.enemy.y - self.y, nearestEnemy.enemy.x - self.x); speedX = self.speed * Math.cos(angle) * self.curveBullet * 0.1; speedY = -self.speed; self.rotation = Math.atan2(speedY, speedX) + Math.PI / 2; } } self.x += speedX; self.y += speedY; }; }); var EnemyBullet = Container.expand(function () { var self = Container.call(this); var bulletGraphics = LK.getAsset('enemyBullet', { anchorX: 0.5, anchorY: 0.5 }); bulletGraphics.rotation = Math.PI; self.addChild(bulletGraphics); self.speed = 5; self.move = function () { self.x += self.speedX; self.y += self.speedY; }; }); var Hero = Container.expand(function () { var self = Container.call(this); var heroGraphics = LK.getAsset('hero', { anchorX: 0.5, anchorY: 0.5 }); self.addChild(heroGraphics); self.health = 100; self.healthBar = self.addChild(new HealthBar(100, 0x00ff00)); self.healthBar.y = -heroGraphics.height / 2 - 50; self.healthBar.updateHealth(self.health); self.shieldBar = self.addChild(new HealthBar(10, 0x4682B4)); self.shieldBar.y = self.healthBar.y - 30; self.shieldBar.visible = false; self.shieldEffect = LK.getAsset('shieldEffect', { anchorX: 0.5, anchorY: 0.5 }); self.shieldEffect.visible = false; self.shieldEffect.alpha = 0.5; self.addChildAt(self.shieldEffect, 1); self.updateShield = function () { if (self.shield > 0) { self.shieldBar.visible = true; self.shieldEffect.visible = true; self.shieldBar.updateHealth(self.shield); self.shieldEffect.alpha = self.shield / 10 / 2; } else { self.shieldBar.visible = false; self.shieldEffect.visible = false; self.shieldBar.updateHealth(0); } }; self.updateShield(); self.hitEffectCounter = 0; self.curveBullet = 0; self.shield = 0; self.fireRate = 30; self.bulletCount = 1; self.acceleration = 1; self.scoreMultiplier = 1; }); var Enemy = Container.expand(function (currentWave) { var self = Container.call(this); var enemyGraphics = LK.getAsset('enemy', { anchorX: 0.5, anchorY: 0.5 }); self.addChild(enemyGraphics); self.speed = 6; self.health = 30 + currentWave * 10; self.targetY = Math.random() * (2732 / 3) + enemyGraphics.height; self.sidewaysOffset = Math.random() * 60; self.healthBar = self.addChild(new HealthBar(self.health, 0xff0000)); self.healthBar.y = -enemyGraphics.height / 2 - 50; self.healthBar.updateHealth(self.health); self.hitEffectCounter = 0; self.tickOffset = Math.floor(Math.random() * 90); self.move = function () { if (self.y < self.targetY) { self.y += self.speed; } self.x += Math.sin((LK.ticks + self.sidewaysOffset) / 30) * 5; if (self.x < 0) { self.x = 0; } if (self.x > 2048 - enemyGraphics.width) { self.x = 2048 - enemyGraphics.width; } }; }); var StarField = Container.expand(function () { var self = Container.call(this); var starGraphics = LK.getAsset('star', { anchorX: 0.5, anchorY: 0.5 }); self.addChild(starGraphics); self.speed = (Math.random() * 2 + 1) * 0.5; self.alpha = self.speed / 2; self.move = function () { self.y += self.speed; if (self.y > 2732) { self.y = -100; self.x = Math.random() * 2048; self.speed = Math.random() * 2 + 1; self.alpha = self.speed / 3; } }; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x170615 }); /**** * Game Code ****/ var background = LK.getAsset('background', { anchorX: 0.5, anchorY: 1 }); background.x = 2048 / 2; background.y = 2732; background.alpha = 0.4; game.addChild(background); var starField = []; for (var i = 0; i < 100; i++) { var star = new StarField(); star.x = Math.random() * 2048; star.y = Math.random() * 2732; starField.push(star); game.addChild(star); } var hero = game.addChild(new Hero()); hero.x = 1024; hero.y = 2400; var enemies = []; var heroBullets = []; var enemyBullets = []; var powerups = []; var score = 0; var currentWave = 0; var allEnemiesKilled = true; var scoreText = new Text2('0', { size: 100, font: "'GillSans-Bold',Impact,'Arial Black',Tahoma", fill: "#ffffff", defaultFont: "'Arial', sans-serif" }); scoreText.anchor.set(0.5, 0); LK.gui.topCenter.addChild(scoreText); var powerupLabel = new Text2('', { size: 64, font: "Verdana", fill: "#ffffff" }); powerupLabel.anchor.set(0.5, 0); LK.gui.topCenter.addChild(powerupLabel); powerupLabel.y = scoreText.height + 10; powerupLabel.visible = false; function spawnWave() { for (var i = 0; i < 5; i++) { var enemy = new Enemy(currentWave); enemy.x = Math.random() * 2048; enemy.y = -100 - i * 100; enemies.push(enemy); game.addChild(enemy); } allEnemiesKilled = false; var powerupTypes = ['health', 'speed', 'shield']; if (hero.bulletCount < 5) { powerupTypes.push('extraBullet'); } if (hero.fireRate > 20) { powerupTypes.push('powerup'); } powerupTypes.push('missileSpeed', 'curveBullet', 'scoreMultiplier'); for (var i = 0; i < 3; i++) { var powerupType = powerupTypes[Math.floor(Math.random() * powerupTypes.length)]; var powerup = new Powerup(powerupType); powerup.x = (i + 1) * 2048 / 4; powerup.y = -100; powerups.push(powerup); game.addChild(powerup); } var waveText = new Text2('Wave ' + currentWave, { size: 200, font: "'GillSans-Bold',Impact,'Arial Black',Tahoma", fill: "#ffffff" }); waveText.anchor.set(0.5, 0.5); waveText.x = 2048 / 2; waveText.y = 2732 / 2; game.addChild(waveText); LK.setTimeout(function () { waveText.destroy(); }, 2000); } function fireHeroBullet(enemies, curveBullet) { var angleStep = Math.PI / (hero.bulletCount + 1); for (var i = 0; i < hero.bulletCount; i++) { var bullet = new HeroBullet(hero.acceleration, enemies, curveBullet); bullet.x = hero.x + Math.cos((i + 1) * angleStep) * 100; bullet.y = hero.y - Math.sin((i + 1) * angleStep) * 100; heroBullets.push(bullet); game.addChild(bullet); } } function fireEnemyBullet(enemy) { var bullet = new EnemyBullet(); bullet.x = enemy.x; bullet.y = enemy.y + 50; var angle = Math.atan2(hero.y - bullet.y, hero.x - bullet.x); bullet.speedX = bullet.speed * Math.cos(angle); bullet.speedY = bullet.speed * Math.sin(angle); bullet.rotation = angle - Math.PI / 2; enemyBullets.push(bullet); game.addChild(bullet); } function updateGameObjects() { enemies.forEach(function (enemy, index) { enemy.move(); }); for (var index = heroBullets.length - 1; index >= 0; index--) { var bullet = heroBullets[index]; bullet.move(); if (bullet.y < 0) { bullet.destroy(); heroBullets.splice(index, 1); } } for (var index = enemyBullets.length - 1; index >= 0; index--) { var bullet = enemyBullets[index]; bullet.move(); if (bullet.y > 2732 || bullet.x < 0 || bullet.x > 2048) { bullet.destroy(); enemyBullets.splice(index, 1); } } for (var index = powerups.length - 1; index >= 0; index--) { var powerup = powerups[index]; powerup.move(); if (powerup.y > 2732) { powerup.destroy(); powerups.splice(index, 1); } } } function checkCollisions() { for (var hIndex = heroBullets.length - 1; hIndex >= 0; hIndex--) { var heroBullet = heroBullets[hIndex]; for (var eIndex = enemies.length - 1; eIndex >= 0; eIndex--) { var enemy = enemies[eIndex]; if (heroBullet && enemy && heroBullet.intersects(enemy)) { heroBullet.destroy(); heroBullets.splice(hIndex, 1); heroBullet = null; enemy.health -= 10; enemy.healthBar.updateHealth(enemy.health); enemy.hitEffectCounter = 10; LK.effects.flashObject(enemy, 0xff0000, 1000); if (enemy.health <= 0) { enemy.destroy(); enemies.splice(eIndex, 1); score += Math.floor(100 * hero.scoreMultiplier); LK.setScore(score); scoreText.setText(score); if (enemies.length === 0) { allEnemiesKilled = true; } } } } } for (var index = enemyBullets.length - 1; index >= 0; index--) { var enemyBullet = enemyBullets[index]; if (enemyBullet.intersects(hero)) { enemyBullet.destroy(); enemyBullets.splice(index, 1); if (hero.shield > 0) { hero.shield--; hero.updateShield(); LK.effects.flashObject(hero.shieldEffect, 0xff0000, 1000); } else { hero.health -= 10; hero.healthBar.updateHealth(hero.health); hero.hitEffectCounter = 10; LK.effects.flashObject(hero, 0xff0000, 1000); } } } for (var index = powerups.length - 1; index >= 0; index--) { var powerup = powerups[index]; if (powerup && powerup.intersects(hero)) { for (var i = powerups.length - 1; i >= 0; i--) { powerups[i].destroy(); } powerups = []; switch (powerup.type) { case 'powerup': hero.fireRate = Math.max(5, hero.fireRate * 0.9); powerupLabel.setText('+10% Rate of Fire'); break; case 'health': hero.health = 100; hero.healthBar.updateHealth(hero.health); powerupLabel.setText('Health restored'); break; case 'speed': hero.speed *= 1.1; powerupLabel.setText('+10% Speed'); break; case 'shield': hero.shield = 10; hero.updateShield(); powerupLabel.setText('Shield'); break; case 'extraBullet': hero.bulletCount++; powerupLabel.setText('Extra Bullet'); break; case 'missileSpeed': hero.acceleration *= 1.1; powerupLabel.setText('Missile Speed +10%'); break; case 'curveBullet': hero.curveBullet += 1; powerupLabel.setText('Enhancing Bullet Homing'); break; case 'scoreMultiplier': hero.scoreMultiplier += 0.1; powerupLabel.setText('Score Multiplier +10%'); break; } powerupLabel.visible = true; LK.setTimeout(function () { powerupLabel.visible = false; }, 3000); } } } var targetPosition = { x: hero.x, y: hero.y }; game.on('down', function (obj) { targetPosition = obj.event.getLocalPosition(game); }); game.on('move', function (obj) { targetPosition = obj.event.getLocalPosition(game); }); function moveHeroTowardsTarget() { var dx = targetPosition.x - hero.x; var dy = targetPosition.y - hero.y; var distance = Math.sqrt(dx * dx + dy * dy); var maxSpeed = 15; if (distance > maxSpeed) { var angle = Math.atan2(dy, dx); hero.x += maxSpeed * Math.cos(angle); hero.y += maxSpeed * Math.sin(angle); } else { hero.x = targetPosition.x; hero.y = targetPosition.y; } } function handleTick() { background.y += 0.5; if (background.y >= background.height) { background.y = 2732; } moveHeroTowardsTarget(); updateGameObjects(); checkCollisions(); starField.forEach(function (star) { star.move(); }); if (allEnemiesKilled) { currentWave++; spawnWave(); } if (hero.health <= 0) { LK.showGameOver(); } if (LK.ticks % Math.floor(hero.fireRate) === 0) { fireHeroBullet(enemies, hero.curveBullet); heroBullets.forEach(function (bullet) { game.addChildAt(bullet, game.getChildIndex(hero)); }); } enemies.forEach(function (enemy, index) { if ((LK.ticks + enemy.tickOffset) % Math.max(60, 180 - currentWave * 5) === 0) { fireEnemyBullet(enemy); } }); } LK.on('tick', handleTick);