/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); /**** * Classes ****/ // Bomb (for screen clear effect) var Bomb = Container.expand(function () { var self = Container.call(this); var bomb = self.attachAsset('bomb', { anchorX: 0.5, anchorY: 0.5, alpha: 0.7 }); return self; }); // Boss var Boss = Container.expand(function () { var self = Container.call(this); var boss = self.attachAsset('boss', { anchorX: 0.5, anchorY: 0.5 }); self.hp = 6; self.targetX = 1024; self.moveSpeed = 18; self.shootCooldown = 30; self.update = function () { // Move horizontally only var dx = self.targetX - self.x; if (Math.abs(dx) > self.moveSpeed) { self.x += dx > 0 ? self.moveSpeed : -self.moveSpeed; } else { self.x = self.targetX; // Pick new target self.targetX = 300 + Math.random() * (2048 - 600); } // Shooting self.shootCooldown--; if (self.shootCooldown <= 0) { // Less frequent: shoot every 60 ticks (was 18) self.shootCooldown = 60; spawnBossRockets(self); } }; return self; }); // Boss Rocket var BossRocket = Container.expand(function () { var self = Container.call(this); var rocket = self.attachAsset('bossRocket', { anchorX: 0.5, anchorY: 0.5 }); self.dx = 0; self.dy = 28; self.ricochet = true; self.update = function () { self.x += self.dx; self.y += self.dy; // Ricochet off walls if (self.ricochet) { if (self.x < 0 && self.dx < 0) self.dx *= -1; if (self.x > 2048 && self.dx > 0) self.dx *= -1; } }; return self; }); // Enemy Rocket var EnemyRocket = Container.expand(function () { var self = Container.call(this); var rocket = self.attachAsset('enemyRocket', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 10; // slowed down enemy rocket speed self.dx = 0; // always vertical, no horizontal movement self.dy = self.speed; self.ricochet = false; self.update = function () { self.x += self.dx; self.y += self.dy; // Ricochet off walls if enabled if (self.ricochet) { if (self.x < 0 && self.dx < 0) self.dx *= -1; if (self.x > 2048 && self.dx > 0) self.dx *= -1; } }; return self; }); // Enemy Ship var EnemyShip = Container.expand(function () { var self = Container.call(this); var ship = self.attachAsset('enemyShip', { anchorX: 0.5, anchorY: 0.5 }); self.targetX = 0; self.targetY = 0; self.moveSpeed = 5 + Math.random() * 3; // slowed down enemy movement self.shootCooldown = 60 + Math.floor(Math.random() * 60); self.isRare = false; // rare enemies drop powerups self.hp = 3; // takes 3 hits to defeat self.update = function () { // Move toward target var dx = self.targetX - self.x; var dy = self.targetY - self.y; var dist = Math.sqrt(dx * dx + dy * dy); if (dist > self.moveSpeed) { self.x += dx / dist * self.moveSpeed; self.y += dy / dist * self.moveSpeed; } else { self.x = self.targetX; self.y = self.targetY; // Randomly decide to stay in place for a while if (Math.random() < 0.4) { // Stay in place: do not pick a new target, just wait // Optionally, could add a "waitTicks" property for more control } else { // Pick new target self.targetX = 200 + Math.random() * (2048 - 400); self.targetY = 200 + Math.random() * 800; } } // Shooting self.shootCooldown--; if (self.shootCooldown <= 0) { // Decrease frequency: increase cooldown (was 60-120, now 120-200) self.shootCooldown = 120 + Math.floor(Math.random() * 80); spawnEnemyRocket(self); } }; return self; }); // Player Rocket var PlayerRocket = Container.expand(function () { var self = Container.call(this); var rocket = self.attachAsset('playerRocket', { anchorX: 0.5, anchorY: 0.5 }); self.speed = -32; self.update = function () { self.y += self.speed; }; return self; }); // Player Ship var PlayerShip = Container.expand(function () { var self = Container.call(this); var ship = self.attachAsset('playerShip', { anchorX: 0.5, anchorY: 0.5 }); self.lives = 3; self.shielded = false; self.fastShoot = false; self.shootTimer = 0; self.shieldNode = null; self.update = function () { // nothing here, movement is handled by drag }; self.setShield = function (active) { if (active && !self.shielded) { self.shielded = true; self.shieldNode = new Shield(); self.shieldNode.x = 0; self.shieldNode.y = 0; self.addChild(self.shieldNode); } else if (!active && self.shielded) { if (self.shieldNode) { self.shieldNode.destroy(); self.shieldNode = null; } self.shielded = false; } }; return self; }); // PowerUp var PowerUp = Container.expand(function () { var self = Container.call(this); var powerup = self.attachAsset('powerup', { anchorX: 0.5, anchorY: 0.5 }); self.type = 'fast'; // 'fast', 'life', 'shield', 'bomb' self.speed = 12; self.update = function () { self.y += self.speed; }; return self; }); // Shield var Shield = Container.expand(function () { var self = Container.call(this); var shield = self.attachAsset('shield', { anchorX: 0.5, anchorY: 0.5, alpha: 0.4 }); return self; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x000000 }); /**** * Game Code ****/ // Play music // Player ship: blue box // Player rocket: yellow box // Enemy ship: red ellipse // Enemy rocket: orange box // Power-up: green ellipse // Shield: cyan ellipse // Boss: purple box // Boss rocket: magenta box // Bomb: white ellipse // Sounds // Music // Game state var gameStarted = false; var startScreen = null; var titleText = null; var playButton = null; // Score, lives, state var score = 0; var lives = 3; var player = null; var playerShieldTimeout = 0; var playerFastShootTimeout = 0; var playerBombActive = false; var playerInvulnTimeout = 0; var boss = null; var bossActive = false; var bossDefeated = false; var bossHpTxt = null; // Arrays for game objects var playerRockets = []; var enemyRockets = []; var bossRockets = []; var enemies = []; var powerups = []; var bombs = []; // GUI var scoreTxt = new Text2('0', { size: 120, fill: 0xFFFFFF }); scoreTxt.anchor.set(0.5, 0); LK.gui.top.addChild(scoreTxt); var livesTxt = new Text2('♥♥♥', { size: 90, fill: 0xFF6666 }); livesTxt.anchor.set(1, 0); livesTxt.x = -60; LK.gui.topRight.addChild(livesTxt); // Helper: update GUI function updateScore() { scoreTxt.setText(score); } function updateLives() { var s = ''; for (var i = 0; i < lives; ++i) s += '♥'; livesTxt.setText(s); } function showBossHp(hp) { if (!bossHpTxt) { bossHpTxt = new Text2('Boss: ' + hp, { size: 90, fill: 0xFFCCFF }); bossHpTxt.anchor.set(0.5, 0); LK.gui.bottom.addChild(bossHpTxt); } else { bossHpTxt.setText('Boss: ' + hp); } } function hideBossHp() { if (bossHpTxt) { bossHpTxt.destroy(); bossHpTxt = null; } } // Dragging var dragNode = null; game.down = function (x, y, obj) { // If game hasn't started, start it on any tap if (!gameStarted) { startGame(); return; } // Only allow drag if touch is on player if (player && Math.abs(x - player.x) < 120 && Math.abs(y - player.y) < 80) { dragNode = player; } }; game.up = function (x, y, obj) { dragNode = null; }; function handleMove(x, y, obj) { if (dragNode === player && player) { // Clamp to screen var px = Math.max(80, Math.min(2048 - 80, x)); var py = Math.max(2732 - 300, Math.min(2732 - 80, y)); player.x = px; player.y = py; } } game.move = handleMove; // Spawn enemy function spawnEnemy() { var e = new EnemyShip(); e.x = 200 + Math.random() * (2048 - 400); e.y = 100 + Math.random() * 200; e.targetX = 200 + Math.random() * (2048 - 400); e.targetY = 200 + Math.random() * 800; // 1 in 7 is rare if (Math.random() < 0.14) { e.isRare = true; // Tint rare enemies e.children[0].tint = 0x00ff99; } enemies.push(e); game.addChild(e); } // Spawn powerup function spawnPowerUp(x, y) { var p = new PowerUp(); p.x = x; p.y = y; // Random type var r = Math.random(); if (r < 0.25) p.type = 'fast';else if (r < 0.5) p.type = 'life';else if (r < 0.75) p.type = 'shield';else p.type = 'bomb'; // Color by type if (p.type === 'fast') p.children[0].tint = 0x44ff44; if (p.type === 'life') p.children[0].tint = 0xff66cc; if (p.type === 'shield') p.children[0].tint = 0x00ffff; if (p.type === 'bomb') p.children[0].tint = 0xffffff; powerups.push(p); game.addChild(p); } // Spawn player rocket function spawnPlayerRocket() { var r = new PlayerRocket(); r.x = player.x; r.y = player.y - 80; playerRockets.push(r); game.addChild(r); LK.getSound('shoot').play(); } // Spawn enemy rocket function spawnEnemyRocket(enemy) { var r = new EnemyRocket(); r.x = enemy.x; r.y = enemy.y + 60; // Only shoot vertically down, no targeting r.dx = 0; r.dy = r.speed; r.ricochet = false; enemyRockets.push(r); game.addChild(r); LK.getSound('enemyShoot').play(); } // Spawn boss function spawnBoss() { boss = new Boss(); boss.x = 1024; boss.y = 400; boss.hp = 6; bossActive = true; game.addChild(boss); showBossHp(boss.hp); } // Spawn boss rockets (single fast ricochet, less frequent, less spread) function spawnBossRockets(bossObj) { // Only shoot a single rocket, straight down, fast, ricochet enabled var r = new BossRocket(); r.x = bossObj.x; r.y = bossObj.y + 100; // Angle straight down var angle = Math.PI / 2; r.dx = 0; r.dy = 38; // much faster r.ricochet = true; bossRockets.push(r); game.addChild(r); LK.getSound('bossShoot').play(); } // Bomb effect: clear all enemy/boss rockets and damage all enemies function activateBomb() { if (playerBombActive) return; playerBombActive = true; var bomb = new Bomb(); bomb.x = player.x; bomb.y = player.y - 100; bombs.push(bomb); game.addChild(bomb); LK.getSound('bomb').play(); // Flash LK.effects.flashScreen(0xffffff, 400); // Destroy all enemy/boss rockets for (var i = enemyRockets.length - 1; i >= 0; --i) { enemyRockets[i].destroy(); enemyRockets.splice(i, 1); } for (var i = bossRockets.length - 1; i >= 0; --i) { bossRockets[i].destroy(); bossRockets.splice(i, 1); } // Damage all enemies for (var i = enemies.length - 1; i >= 0; --i) { enemies[i].destroy(); enemies.splice(i, 1); score += 1; updateScore(); } // Damage boss if present if (bossActive && boss) { boss.hp -= 5; if (boss.hp < 0) boss.hp = 0; showBossHp(boss.hp); LK.effects.flashObject(boss, 0xffffff, 400); } // Remove bomb after effect LK.setTimeout(function () { if (bomb) bomb.destroy(); playerBombActive = false; }, 600); } // Main update game.update = function () { // Don't update game logic if game hasn't started if (!gameStarted) return; // Player shooting if (player) { player.shootTimer--; var shootInterval = player.fastShoot ? 7 : 18; if (player.shootTimer <= 0) { player.shootTimer = shootInterval; spawnPlayerRocket(); } } // Player powerup timers if (playerFastShootTimeout > 0) { playerFastShootTimeout--; if (playerFastShootTimeout === 0) { player.fastShoot = false; } } if (playerShieldTimeout > 0) { playerShieldTimeout--; if (playerShieldTimeout === 0) { player.setShield(false); } } if (playerInvulnTimeout > 0) { playerInvulnTimeout--; } // Update player rockets for (var i = playerRockets.length - 1; i >= 0; --i) { var r = playerRockets[i]; r.update(); // Off screen if (r.y < -80) { r.destroy(); playerRockets.splice(i, 1); continue; } // Hit enemy for (var j = enemies.length - 1; j >= 0; --j) { var e = enemies[j]; if (r.intersects(e)) { LK.getSound('explosion').play(); r.destroy(); playerRockets.splice(i, 1); e.hp -= 1; LK.effects.flashObject(e, 0xffffff, 120); // Powerup drop if destroyed if (e.hp <= 0) { if (e.isRare) { spawnPowerUp(e.x, e.y); } e.destroy(); enemies.splice(j, 1); score += 1; updateScore(); } break; } } // Hit boss if (bossActive && boss && r.intersects(boss)) { LK.getSound('hit').play(); r.destroy(); playerRockets.splice(i, 1); boss.hp -= 1; showBossHp(boss.hp); LK.effects.flashObject(boss, 0xff33cc, 200); if (boss.hp <= 0) { // Boss defeated bossDefeated = true; boss.destroy(); boss = null; bossActive = false; hideBossHp(); LK.effects.flashScreen(0x00ffcc, 1200); LK.setScore(score); LK.showYouWin(); return; } } } // Update enemy rockets for (var i = enemyRockets.length - 1; i >= 0; --i) { var r = enemyRockets[i]; r.update(); // Off screen if (r.y > 2732 + 80 || r.x < -80 || r.x > 2048 + 80) { r.destroy(); enemyRockets.splice(i, 1); continue; } // Hit player if (player && r.intersects(player)) { r.destroy(); enemyRockets.splice(i, 1); if (player.shielded) { LK.getSound('shield').play(); player.setShield(false); } else if (playerInvulnTimeout === 0) { lives -= 1; updateLives(); LK.getSound('hit').play(); LK.effects.flashObject(player, 0xff0000, 600); playerInvulnTimeout = 60; if (lives <= 0) { LK.effects.flashScreen(0xff0000, 1200); LK.setScore(score); LK.showGameOver(); return; } } } } // Update boss rockets for (var i = bossRockets.length - 1; i >= 0; --i) { var r = bossRockets[i]; r.update(); // Off screen if (r.y > 2732 + 80 || r.x < -80 || r.x > 2048 + 80) { r.destroy(); bossRockets.splice(i, 1); continue; } // Hit player if (player && r.intersects(player)) { r.destroy(); bossRockets.splice(i, 1); if (player.shielded) { LK.getSound('shield').play(); player.setShield(false); } else if (playerInvulnTimeout === 0) { lives -= 1; updateLives(); LK.getSound('hit').play(); LK.effects.flashObject(player, 0xff0000, 600); playerInvulnTimeout = 60; if (lives <= 0) { LK.effects.flashScreen(0xff0000, 1200); LK.setScore(score); LK.showGameOver(); return; } } } } // Update enemies for (var i = enemies.length - 1; i >= 0; --i) { var e = enemies[i]; e.update(); // Off screen (shouldn't happen) if (e.y > 2732 + 100) { e.destroy(); enemies.splice(i, 1); continue; } // Collide with player if (player && e.intersects(player)) { LK.getSound('hit').play(); e.destroy(); enemies.splice(i, 1); if (player.shielded) { player.setShield(false); } else if (playerInvulnTimeout === 0) { lives -= 1; updateLives(); LK.effects.flashObject(player, 0xff0000, 600); playerInvulnTimeout = 60; if (lives <= 0) { LK.effects.flashScreen(0xff0000, 1200); LK.setScore(score); LK.showGameOver(); return; } } } } // Update powerups for (var i = powerups.length - 1; i >= 0; --i) { var p = powerups[i]; p.update(); // Off screen if (p.y > 2732 + 80) { p.destroy(); powerups.splice(i, 1); continue; } // Collect if (player && p.intersects(player)) { LK.getSound('powerup').play(); if (p.type === 'fast') { player.fastShoot = true; playerFastShootTimeout = 360; } else if (p.type === 'life') { lives += 1; updateLives(); LK.getSound('lifeup').play(); } else if (p.type === 'shield') { player.setShield(true); playerShieldTimeout = 360; LK.getSound('shield').play(); } else if (p.type === 'bomb') { activateBomb(); } p.destroy(); powerups.splice(i, 1); } } // Update bombs for (var i = bombs.length - 1; i >= 0; --i) { // Bombs are visual only, auto destroy after effect } // Boss if (bossActive && boss) { boss.update(); } // Spawn enemies: 2 at 0 points, +1 per point up to 6, always keep at least (score+2, max 6) enemies on screen if (!bossActive) { var desiredEnemies = Math.min(score + 2, 6); var toSpawn = desiredEnemies - enemies.length; for (var i = 0; i < toSpawn; ++i) { spawnEnemy(); } } // Boss appears at 20 points if (!bossActive && !bossDefeated && score >= 20) { // Remove all enemies for (var i = enemies.length - 1; i >= 0; --i) { enemies[i].destroy(); enemies.splice(i, 1); } spawnBoss(); } }; // Create start screen function createStartScreen() { startScreen = new Container(); game.addChild(startScreen); // Title text titleText = new Text2('SPACE SHOOTER', { size: 180, fill: 0xFFFFFF }); titleText.anchor.set(0.5, 0.5); titleText.x = 1024; titleText.y = 1000; startScreen.addChild(titleText); // Play button playButton = new Text2('TAP TO PLAY', { size: 120, fill: 0x00FF00 }); playButton.anchor.set(0.5, 0.5); playButton.x = 1024; playButton.y = 1400; startScreen.addChild(playButton); } // Start the actual game function startGame() { if (gameStarted) return; gameStarted = true; // Remove start screen if (startScreen) { startScreen.destroy(); startScreen = null; } // Start music LK.playMusic('spacebg'); // Spawn player player = new PlayerShip(); player.x = 1024; player.y = 2732 - 180; game.addChild(player); // Set initial GUI updateScore(); updateLives(); } // Initialize start screen createStartScreen();