/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); /**** * Classes ****/ var Bullet = Container.expand(function () { var self = Container.call(this); var bulletGraphics = self.attachAsset('bullet', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 8; self.targetX = 0; self.targetY = 0; self.damage = 1; self.update = function () { var dx = self.targetX - self.x; var dy = self.targetY - self.y; var distance = Math.sqrt(dx * dx + dy * dy); if (distance > 5) { self.x += dx / distance * self.speed; self.y += dy / distance * 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 = 1; self.health = 3; self.maxHealth = 3; self.shootCooldown = 0; self.maxShootCooldown = 120; self.reward = 15; self.update = function () { // Ensure enemy is visible and active if (!self.visible || self.alpha <= 0) return; var dx = mothership.x - self.x; var dy = mothership.y - self.y; var distance = Math.sqrt(dx * dx + dy * dy); if (distance > 80) { self.x += dx / distance * self.speed; self.y += dy / distance * self.speed; } if (self.shootCooldown > 0) { self.shootCooldown--; } if (self.shootCooldown <= 0 && distance < 400) { var enemyBullet = new EnemyBullet(); enemyBullet.x = self.x; enemyBullet.y = self.y; enemyBullets.push(enemyBullet); game.addChild(enemyBullet); self.shootCooldown = self.maxShootCooldown; } }; self.takeDamage = function (damage) { self.health -= damage; if (self.health <= 0) { return true; } return false; }; 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 = 4; self.damage = 10; self.update = function () { var dx = mothership.x - self.x; var dy = mothership.y - self.y; var distance = Math.sqrt(dx * dx + dy * dy); if (distance > 5) { self.x += dx / distance * self.speed; self.y += dy / distance * self.speed; } }; return self; }); var Fighter = Container.expand(function () { var self = Container.call(this); var fighterGraphics = self.attachAsset('fighter', { anchorX: 0.5, anchorY: 0.5 }); self.orbitRadius = 200; self.orbitSpeed = 0.02; self.angle = Math.random() * Math.PI * 2; self.shootCooldown = 0; self.maxShootCooldown = 40; self.range = 2000; self.update = function () { self.angle += self.orbitSpeed; self.x = mothership.x + Math.cos(self.angle) * self.orbitRadius; self.y = mothership.y + Math.sin(self.angle) * self.orbitRadius; if (self.shootCooldown > 0) { self.shootCooldown--; } if (self.shootCooldown <= 0) { var closestEnemy = null; var closestDistance = self.range; for (var i = 0; i < enemies.length; i++) { var enemy = enemies[i]; var dx = enemy.x - self.x; var dy = enemy.y - self.y; var distance = Math.sqrt(dx * dx + dy * dy); if (distance < closestDistance) { closestDistance = distance; closestEnemy = enemy; } } if (closestEnemy) { var bullet = new Bullet(); bullet.x = self.x; bullet.y = self.y; bullet.targetX = closestEnemy.x; bullet.targetY = closestEnemy.y; bullets.push(bullet); game.addChild(bullet); self.shootCooldown = self.maxShootCooldown; LK.getSound('shoot').play(); } } }; return self; }); var Mothership = Container.expand(function () { var self = Container.call(this); var mothershipGraphics = self.attachAsset('mothership', { anchorX: 0.5, anchorY: 0.5 }); self.health = 100; self.maxHealth = 100; self.takeDamage = function (damage) { self.health -= damage; LK.effects.flashObject(self, 0xff0000, 300); if (self.health <= 0) { self.health = 0; LK.showGameOver(); } }; return self; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x000011 }); /**** * Game Code ****/ var gameState = 'start'; // 'start', 'playing', 'gameOver' var mothership; var fighters = []; var enemies = []; var bullets = []; var enemyBullets = []; var credits = 100; var wave = 1; var enemiesInWave = 5; var enemiesSpawned = 0; var waveComplete = false; var spawnTimer = 0; var maxSpawnTimer = 180; var fighterCost = 50; // Starting screen elements var titleText = new Text2('SPACE FLEET DEFENSE', { size: 120, fill: 0x4a90e2 }); titleText.anchor.set(0.5, 0.5); LK.gui.center.addChild(titleText); var instructionText = new Text2('Defend your mothership!\nBuy fighters to attack enemies.\nSurvive 10 waves to win!', { size: 80, fill: 0xFFFFFF }); instructionText.anchor.set(0.5, 0.5); instructionText.y = 200; LK.gui.center.addChild(instructionText); var startButton = new Text2('TAP TO START', { size: 100, fill: 0x7ed321 }); startButton.anchor.set(0.5, 0.5); startButton.y = 400; LK.gui.center.addChild(startButton); // Game UI elements (initially hidden) var creditsText = new Text2('Credits: 100', { size: 60, fill: 0xFFFFFF }); creditsText.anchor.set(0, 0); creditsText.x = 20; creditsText.y = 20; creditsText.visible = false; LK.gui.topLeft.addChild(creditsText); var healthText = new Text2('Health: 100/100', { size: 60, fill: 0xFFFFFF }); healthText.anchor.set(0.5, 0); healthText.visible = false; LK.gui.top.addChild(healthText); var waveText = new Text2('Wave: 1', { size: 60, fill: 0xFFFFFF }); waveText.anchor.set(1, 0); waveText.visible = false; LK.gui.topRight.addChild(waveText); var buyButton = new Text2('Buy Fighter (50)', { size: 80, fill: 0x00FF00 }); buyButton.anchor.set(0.5, 1); buyButton.visible = false; LK.gui.bottom.addChild(buyButton); startButton.down = function (x, y, obj) { if (gameState === 'start') { startGame(); } }; buyButton.down = function (x, y, obj) { if (gameState === 'playing' && credits >= fighterCost) { credits -= fighterCost; var fighter = new Fighter(); fighter.orbitRadius = 200 + fighters.length * 30; fighters.push(fighter); game.addChild(fighter); LK.getSound('purchase').play(); fighterCost += 10; buyButton.setText('Buy Fighter (' + fighterCost + ')'); creditsText.setText('Credits: ' + credits); } }; function startGame() { gameState = 'playing'; // Hide start screen titleText.visible = false; instructionText.visible = false; startButton.visible = false; // Show game UI creditsText.visible = true; healthText.visible = true; waveText.visible = true; buyButton.visible = true; // Initialize game objects mothership = game.addChild(new Mothership()); mothership.x = 2048 / 2; mothership.y = 2732 / 2; } function spawnEnemy() { var enemy = new Enemy(); var side = Math.floor(Math.random() * 4); switch (side) { case 0: // Top enemy.x = Math.random() * 2048; enemy.y = -50; break; case 1: // Right enemy.x = 2048 + 50; enemy.y = Math.random() * 2732; break; case 2: // Bottom enemy.x = Math.random() * 2048; enemy.y = 2732 + 50; break; case 3: // Left enemy.x = -50; enemy.y = Math.random() * 2732; break; } enemy.health += Math.floor(wave / 3); enemy.maxHealth = enemy.health; enemy.speed += wave * 0.1; enemies.push(enemy); game.addChild(enemy); enemiesSpawned++; } function startNextWave() { wave++; enemiesInWave = 5 + wave * 2; enemiesSpawned = 0; waveComplete = false; waveText.setText('Wave: ' + wave); maxSpawnTimer = Math.max(60, 180 - wave * 10); } game.update = function () { if (gameState !== 'playing') { return; } if (!waveComplete && enemiesSpawned < enemiesInWave) { spawnTimer++; if (spawnTimer >= maxSpawnTimer) { spawnEnemy(); spawnTimer = 0; } } if (enemiesSpawned >= enemiesInWave && enemies.length === 0 && !waveComplete) { waveComplete = true; credits += 50 + wave * 10; creditsText.setText('Credits: ' + credits); LK.setTimeout(function () { startNextWave(); }, 2000); } for (var i = bullets.length - 1; i >= 0; i--) { var bullet = bullets[i]; if (!bullet || bullet.destroyed) continue; // Skip if bullet is already destroyed var hitEnemy = false; var hitEnemyBullet = false; for (var j = enemies.length - 1; j >= 0; j--) { var enemy = enemies[j]; if (bullet.intersects(enemy)) { if (enemy.takeDamage(bullet.damage)) { credits += enemy.reward; creditsText.setText('Credits: ' + credits); LK.getSound('enemyHit').play(); // Create explosion effect var enemyToDestroy = enemy; // Capture enemy reference tween(enemy, { scaleX: 2, scaleY: 2, alpha: 0, tint: 0xFF4444 }, { duration: 300, easing: tween.easeOut, onFinish: function onFinish() { enemyToDestroy.destroy(); } }); enemies.splice(j, 1); } bullet.destroyed = true; // Mark as destroyed bullet.destroy(); bullets.splice(i, 1); hitEnemy = true; break; } } if (!hitEnemy && !bullet.destroyed) { // Check collision with enemy bullets for (var k = enemyBullets.length - 1; k >= 0; k--) { var enemyBullet = enemyBullets[k]; if (bullet.intersects(enemyBullet)) { // Destroy both bullets bullet.destroyed = true; bullet.destroy(); bullets.splice(i, 1); enemyBullet.destroy(); enemyBullets.splice(k, 1); hitEnemyBullet = true; break; } } } if (!hitEnemy && !hitEnemyBullet && !bullet.destroyed) { if (bullet.x < 0 || bullet.x > 2048 || bullet.y < 0 || bullet.y > 2732) { bullet.destroyed = true; // Mark as destroyed bullet.destroy(); bullets.splice(i, 1); } } } for (var i = enemyBullets.length - 1; i >= 0; i--) { var enemyBullet = enemyBullets[i]; if (enemyBullet.intersects(mothership)) { mothership.takeDamage(enemyBullet.damage); healthText.setText('Health: ' + mothership.health + '/' + mothership.maxHealth); enemyBullet.destroy(); enemyBullets.splice(i, 1); } else if (enemyBullet.x < -100 || enemyBullet.x > 2148 || enemyBullet.y < -100 || enemyBullet.y > 2832) { enemyBullet.destroy(); enemyBullets.splice(i, 1); } } for (var i = enemies.length - 1; i >= 0; i--) { var enemy = enemies[i]; if (enemy.intersects(mothership)) { mothership.takeDamage(20); healthText.setText('Health: ' + mothership.health + '/' + mothership.maxHealth); // Create explosion effect var enemyToDestroy = enemy; // Capture enemy reference tween(enemy, { scaleX: 2, scaleY: 2, alpha: 0, tint: 0xFF4444 }, { duration: 300, easing: tween.easeOut, onFinish: function onFinish() { enemyToDestroy.destroy(); } }); enemies.splice(i, 1); } } if (buyButton) { if (credits >= fighterCost) { buyButton.tint = 0x00ff00; } else { buyButton.tint = 0x666666; } } if (wave >= 10) { LK.showYouWin(); } };