/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); /**** * Classes ****/ 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.update = function () { self.y += self.speed; }; return self; }); var EnemyShip = Container.expand(function () { var self = Container.call(this); var shipGraphics = self.attachAsset('enemyShip', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 2; self.fireRate = 120; self.fireTimer = Math.random() * 120; self.movePattern = 0; self.timeAlive = 0; self.update = function () { self.timeAlive++; if (self.movePattern === 0) { self.y += self.speed; } else if (self.movePattern === 1) { self.y += self.speed; self.x += Math.sin(self.timeAlive * 0.05) * 2; } if (self.fireTimer > 0) { self.fireTimer--; } else { self.fire(); self.fireTimer = self.fireRate; } }; self.fire = function () { var bullet = new EnemyBullet(); bullet.x = self.x; bullet.y = self.y; enemyBullets.push(bullet); game.addChild(bullet); }; return self; }); var PlayerBullet = Container.expand(function () { var self = Container.call(this); var bulletGraphics = self.attachAsset('playerBullet', { anchorX: 0.5, anchorY: 0.5 }); self.speed = -12; self.update = function () { self.y += self.speed; }; return self; }); var PlayerShip = Container.expand(function () { var self = Container.call(this); var shipGraphics = self.attachAsset('playerShip', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 8; self.fireRate = 15; self.fireTimer = 0; self.shield = false; self.multiShot = false; self.powerUpTimer = 0; self.update = function () { if (self.fireTimer > 0) { self.fireTimer--; } if (self.powerUpTimer > 0) { self.powerUpTimer--; if (self.powerUpTimer <= 0) { self.multiShot = false; self.shield = false; shipGraphics.tint = 0xffffff; } } if (self.shield) { shipGraphics.tint = 0x00ffff; } else if (self.multiShot) { shipGraphics.tint = 0xffff00; } }; self.down = function (x, y, obj) { // Cancel any active powerup when player taps on the ship if (self.powerUpTimer > 0) { self.powerUpTimer = 0; self.multiShot = false; self.shield = false; shipGraphics.tint = 0xffffff; } }; self.fire = function () { if (self.fireTimer <= 0) { if (self.multiShot) { var bullet1 = new PlayerBullet(); bullet1.x = self.x - 20; bullet1.y = self.y; playerBullets.push(bullet1); game.addChild(bullet1); var bullet2 = new PlayerBullet(); bullet2.x = self.x; bullet2.y = self.y; playerBullets.push(bullet2); game.addChild(bullet2); var bullet3 = new PlayerBullet(); bullet3.x = self.x + 20; bullet3.y = self.y; playerBullets.push(bullet3); game.addChild(bullet3); } else { var bullet = new PlayerBullet(); bullet.x = self.x; bullet.y = self.y; playerBullets.push(bullet); game.addChild(bullet); } LK.getSound('shoot').play(); self.fireTimer = self.fireRate; } }; 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 = 2; self.type = 'shield'; self.rotationSpeed = 0.1; self.update = function () { self.y += self.speed; powerUpGraphics.rotation += self.rotationSpeed; }; return self; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x000011 }); /**** * Game Code ****/ var player = null; var playerBullets = []; var enemyShips = []; var enemyBullets = []; var powerUps = []; var enemySpawnTimer = 0; var powerUpSpawnTimer = 0; var waveTimer = 0; var difficulty = 1; var dragNode = null; var scoreText = new Text2('0', { size: 60, fill: 0xFFFFFF }); scoreText.anchor.set(0.5, 0); LK.gui.top.addChild(scoreText); var waveText = new Text2('Wave 1', { size: 40, fill: 0xFFFF00 }); waveText.anchor.set(0, 0); waveText.x = 50; waveText.y = 50; LK.gui.topLeft.addChild(waveText); player = game.addChild(new PlayerShip()); player.x = 1024; player.y = 2500; LK.playMusic('bgMusic'); function spawnEnemy() { var enemy = new EnemyShip(); enemy.x = Math.random() * (2048 - 120) + 60; enemy.y = -30; enemy.speed = 2 + difficulty * 0.5; enemy.movePattern = Math.random() < 0.3 ? 1 : 0; enemyShips.push(enemy); game.addChild(enemy); } function spawnPowerUp() { var powerUp = new PowerUp(); powerUp.x = Math.random() * (2048 - 80) + 40; powerUp.y = -20; powerUp.type = Math.random() < 0.5 ? 'shield' : 'multiShot'; if (powerUp.type === 'multiShot') { powerUp.getChildAt(0).tint = 0xffff00; } powerUps.push(powerUp); game.addChild(powerUp); } function handleMove(x, y, obj) { player.x = Math.max(40, Math.min(2008, x)); player.y = Math.max(40, Math.min(2692, y)); } game.move = handleMove; game.update = function () { waveTimer++; if (waveTimer % 1800 === 0) { difficulty++; waveText.setText('Wave ' + difficulty); } enemySpawnTimer++; var spawnRate = Math.max(60, 150 - difficulty * 8); if (enemySpawnTimer >= spawnRate) { spawnEnemy(); enemySpawnTimer = 0; } powerUpSpawnTimer++; if (powerUpSpawnTimer >= 300) { if (Math.random() < 0.7) { spawnPowerUp(); } powerUpSpawnTimer = 0; } player.fire(); for (var i = playerBullets.length - 1; i >= 0; i--) { var bullet = playerBullets[i]; if (bullet.lastY === undefined) bullet.lastY = bullet.y; if (bullet.lastY >= -20 && bullet.y < -20) { bullet.destroy(); playerBullets.splice(i, 1); continue; } bullet.lastY = bullet.y; } for (var i = enemyBullets.length - 1; i >= 0; i--) { var bullet = enemyBullets[i]; if (bullet.lastY === undefined) bullet.lastY = bullet.y; if (bullet.lastY <= 2732 && bullet.y > 2732) { bullet.destroy(); enemyBullets.splice(i, 1); continue; } if (bullet.lastIntersecting === undefined) bullet.lastIntersecting = false; var currentIntersecting = bullet.intersects(player); if (!bullet.lastIntersecting && currentIntersecting) { if (!player.shield) { LK.effects.flashScreen(0xff0000, 1000); LK.showGameOver(); return; } else { bullet.destroy(); enemyBullets.splice(i, 1); continue; } } bullet.lastY = bullet.y; bullet.lastIntersecting = currentIntersecting; } for (var i = enemyShips.length - 1; i >= 0; i--) { var enemy = enemyShips[i]; if (enemy.lastY === undefined) enemy.lastY = enemy.y; if (enemy.lastY <= 2732 && enemy.y > 2732) { enemy.destroy(); enemyShips.splice(i, 1); continue; } if (enemy.lastIntersecting === undefined) enemy.lastIntersecting = false; var currentIntersecting = enemy.intersects(player); if (!enemy.lastIntersecting && currentIntersecting) { // Cancel powerup when touching enemy if (player.powerUpTimer > 0) { player.powerUpTimer = 0; player.multiShot = false; player.shield = false; player.getChildAt(0).tint = 0xffffff; } if (!player.shield) { LK.effects.flashScreen(0xff0000, 1000); LK.showGameOver(); return; } else { enemy.destroy(); enemyShips.splice(i, 1); LK.setScore(LK.getScore() + 10); scoreText.setText(LK.getScore()); continue; } } for (var j = playerBullets.length - 1; j >= 0; j--) { var bullet = playerBullets[j]; if (bullet.lastEnemyIntersecting === undefined) bullet.lastEnemyIntersecting = []; if (bullet.lastEnemyIntersecting[i] === undefined) bullet.lastEnemyIntersecting[i] = false; var bulletEnemyIntersecting = bullet.intersects(enemy); if (!bullet.lastEnemyIntersecting[i] && bulletEnemyIntersecting) { LK.getSound('enemyDestroy').play(); enemy.destroy(); enemyShips.splice(i, 1); bullet.destroy(); playerBullets.splice(j, 1); LK.setScore(LK.getScore() + 10); scoreText.setText(LK.getScore()); break; } bullet.lastEnemyIntersecting[i] = bulletEnemyIntersecting; } if (i < enemyShips.length) { enemy.lastY = enemy.y; enemy.lastIntersecting = currentIntersecting; } } for (var i = powerUps.length - 1; i >= 0; i--) { var powerUp = powerUps[i]; if (powerUp.lastY === undefined) powerUp.lastY = powerUp.y; if (powerUp.lastY <= 2732 && powerUp.y > 2732) { powerUp.destroy(); powerUps.splice(i, 1); continue; } if (powerUp.lastIntersecting === undefined) powerUp.lastIntersecting = false; var currentIntersecting = powerUp.intersects(player); if (!powerUp.lastIntersecting && currentIntersecting) { LK.getSound('powerUpCollect').play(); if (powerUp.type === 'shield') { player.shield = true; } else if (powerUp.type === 'multiShot') { player.multiShot = true; } player.powerUpTimer = 600; powerUp.destroy(); powerUps.splice(i, 1); continue; } powerUp.lastY = powerUp.y; powerUp.lastIntersecting = currentIntersecting; } };