/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); /**** * Classes ****/ var BossBullet = Container.expand(function () { var self = Container.call(this); var bulletGraphics = self.attachAsset('bossBullet', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 6; self.update = function () { self.y += self.speed; }; return self; }); var BossShip = Container.expand(function () { var self = Container.call(this); // Main body var shipBody = self.attachAsset('bossShipBody', { anchorX: 0.5, anchorY: 0.5 }); // Wings var wings = self.attachAsset('bossShipWings', { anchorX: 0.5, anchorY: 0.5, x: 0, y: -20 }); // Core var core = self.attachAsset('bossShipCore', { anchorX: 0.5, anchorY: 0.5, x: 0, y: 0 }); // Left turret var leftTurret = self.attachAsset('bossShipTurrets', { anchorX: 0.5, anchorY: 0.5, x: -80, y: -10 }); // Right turret var rightTurret = self.attachAsset('bossShipTurrets', { anchorX: 0.5, anchorY: 0.5, x: 80, y: -10 }); self.maxHealth = 100; self.health = self.maxHealth; self.speed = 1; self.shootTimer = 0; self.shootInterval = 30; self.phase = 1; self.moveTimer = 0; self.moveDirection = 1; self.phaseChangeTimer = 0; // Entrance animation self.targetY = 300; self.y = -200; tween(self, { y: self.targetY }, { duration: 2000, easing: tween.easeOut, onFinish: function onFinish() { self.entryComplete = true; } }); self.update = function () { if (!self.entryComplete) return; // Movement pattern self.moveTimer++; if (self.moveTimer % 120 === 0) { self.moveDirection *= -1; } self.x += self.moveDirection * self.speed; // Keep boss within screen bounds self.x = Math.max(150, Math.min(1898, self.x)); // Phase transitions based on health if (self.health <= self.maxHealth * 0.66 && self.phase === 1) { self.phase = 2; self.shootInterval = 20; self.speed = 1.5; LK.effects.flashObject(self, 0xff0000, 500); } else if (self.health <= self.maxHealth * 0.33 && self.phase === 2) { self.phase = 3; self.shootInterval = 15; self.speed = 2; LK.effects.flashObject(self, 0xff0000, 800); } // Shooting patterns self.shootTimer++; if (self.shootTimer >= self.shootInterval) { self.shootTimer = 0; if (self.phase === 1) { // Single shot toward player var bullet = new BossBullet(); bullet.x = self.x; bullet.y = self.y + 75; bullet.lastY = bullet.y; bossBullets.push(bullet); game.addChild(bullet); } else if (self.phase === 2) { // Triple spread shot for (var shotIndex = 0; shotIndex < 3; shotIndex++) { var bullet = new BossBullet(); bullet.x = self.x + (shotIndex - 1) * 50; bullet.y = self.y + 75; bullet.lastY = bullet.y; bossBullets.push(bullet); game.addChild(bullet); } } else if (self.phase === 3) { // Five shot spread for (var shotIndex = 0; shotIndex < 5; shotIndex++) { var bullet = new BossBullet(); bullet.x = self.x + (shotIndex - 2) * 40; bullet.y = self.y + 75; bullet.lastY = bullet.y; bossBullets.push(bullet); game.addChild(bullet); } } } // Health-based visual effects if (self.health < self.maxHealth * 0.5) { // Damage effects for low health if (Math.random() < 0.02) { LK.effects.flashObject(core, 0xff0000, 100); } } }; 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 = 8; self.update = function () { self.y += self.speed; }; return self; }); var EnemyShip = Container.expand(function () { var self = Container.call(this); // Main body var shipBody = self.attachAsset('enemyShipBody', { anchorX: 0.5, anchorY: 0.5 }); // Wings var wings = self.attachAsset('enemyShipWings', { anchorX: 0.5, anchorY: 0.5, x: 0, y: -15 }); // Core/cockpit var core = self.attachAsset('enemyShipCore', { anchorX: 0.5, anchorY: 0.5, x: 0, y: 0 }); // Thruster var thruster = self.attachAsset('enemyShipThruster', { anchorX: 0.5, anchorY: 0.5, x: 0, y: 30 }); self.speed = 3; self.health = 1; self.shootTimer = 0; self.shootInterval = 60 + Math.random() * 120; // Random shooting interval self.update = function () { self.y += self.speed; // Enemy shooting logic self.shootTimer++; if (self.shootTimer >= self.shootInterval) { self.shootTimer = 0; self.shootInterval = 60 + Math.random() * 120; // Reset with new random interval // Create enemy bullet var bullet = new EnemyBullet(); bullet.x = self.x; bullet.y = self.y + 40; bullet.lastY = bullet.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 = -18; self.update = function () { self.y += self.speed; }; return self; }); var PlayerShip = Container.expand(function () { var self = Container.call(this); // Main body var shipBody = self.attachAsset('playerShipBody', { anchorX: 0.5, anchorY: 0.5 }); // Wings var leftWing = self.attachAsset('playerShipWings', { anchorX: 0.5, anchorY: 0.5, x: 0, y: 20 }); // Cockpit var cockpit = self.attachAsset('playerShipCockpit', { anchorX: 0.5, anchorY: 0.5, x: 0, y: -15 }); // Engine thrusters var leftEngine = self.attachAsset('playerShipEngines', { anchorX: 0.5, anchorY: 0.5, x: -25, y: 35 }); var rightEngine = self.attachAsset('playerShipEngines', { anchorX: 0.5, anchorY: 0.5, x: 25, y: 35 }); // Shield visual effect (initially hidden) var shieldGraphics = self.attachAsset('shieldEffect', { anchorX: 0.5, anchorY: 0.5, x: 0, y: 0, alpha: 0 }); self.shieldGraphics = shieldGraphics; self.shootTimer = 0; self.shootInterval = 15; // Shoot every 15 ticks (4 times per second) self.update = function () { // Auto-shooting logic self.shootTimer++; var currentShootInterval = playerUpgrades.rapidFire ? Math.floor(self.shootInterval / 2) : self.shootInterval; if (self.shootTimer >= currentShootInterval) { self.shootTimer = 0; if (playerUpgrades.tripleShot) { // Triple shot for (var shotIndex = 0; shotIndex < 3; shotIndex++) { var bullet = new PlayerBullet(); bullet.x = self.x + (shotIndex - 1) * 30; // Spread shots bullet.y = self.y - 50; bullet.lastY = bullet.y; playerBullets.push(bullet); game.addChild(bullet); } } else { // Single shot var bullet = new PlayerBullet(); bullet.x = self.x; bullet.y = self.y - 50; bullet.lastY = bullet.y; playerBullets.push(bullet); game.addChild(bullet); } LK.getSound('shoot').play(); } }; return self; }); var Upgrade = Container.expand(function (type) { var self = Container.call(this); self.type = type; self.speed = 4; var upgradeGraphics = self.attachAsset('upgrade' + type, { anchorX: 0.5, anchorY: 0.5 }); // Pulsing animation tween(upgradeGraphics, { scaleX: 1.2, scaleY: 1.2 }, { duration: 800, easing: tween.easeInOut, onFinish: function onFinish() { tween(upgradeGraphics, { scaleX: 1.0, scaleY: 1.0 }, { duration: 800, easing: tween.easeInOut, onFinish: function onFinish() { // Restart the pulsing animation if (self.parent) { tween(upgradeGraphics, { scaleX: 1.2, scaleY: 1.2 }, { duration: 800, easing: tween.easeInOut, onFinish: arguments.callee.caller }); } } }); } }); self.update = function () { self.y += self.speed; }; return self; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x000011 }); /**** * Game Code ****/ // Game variables var playerBullets = []; var enemyBullets = []; var bossBullets = []; var enemies = []; var upgrades = []; var boss = null; var bossActive = false; var enemySpawnTimer = 0; var enemySpawnInterval = 120; // Start with 2 seconds between spawns var upgradeSpawnTimer = 0; var upgradeSpawnInterval = 600; // 10 seconds between upgrades var dragNode = null; var difficultyTimer = 0; var nextBossScore = 500; // First boss at 500 points // Upgrade system var playerUpgrades = { rapidFire: false, rapidFireTimer: 0, shield: false, shieldTimer: 0, tripleShot: false, tripleShotTimer: 0 }; // Create player ship var player = game.addChild(new PlayerShip()); player.x = 1024; // Center horizontally player.y = 2400; // Near bottom of screen // Create game title var titleTxt = new Text2('SPACE INVADERS 2.0', { size: 80, fill: 0x00ff00 }); titleTxt.anchor.set(0.5, 0); titleTxt.x = 0; titleTxt.y = 20; LK.gui.top.addChild(titleTxt); // Create score display var scoreTxt = new Text2('0', { size: 120, fill: 0xFFFFFF }); scoreTxt.anchor.set(0.5, 0); scoreTxt.y = 120; LK.gui.top.addChild(scoreTxt); scoreTxt.setText(LK.getScore()); // Boss health bar (initially hidden) var bossHealthBarBg = new Text2('', { size: 40, fill: 0x333333 }); bossHealthBarBg.anchor.set(0.5, 0); bossHealthBarBg.y = 200; LK.gui.top.addChild(bossHealthBarBg); var bossHealthBar = new Text2('', { size: 40, fill: 0xff0000 }); bossHealthBar.anchor.set(0.5, 0); bossHealthBar.y = 200; LK.gui.top.addChild(bossHealthBar); var bossNameTxt = new Text2('', { size: 60, fill: 0xff0000 }); bossNameTxt.anchor.set(0.5, 0); bossNameTxt.y = 250; LK.gui.top.addChild(bossNameTxt); // Hide boss UI initially bossHealthBarBg.alpha = 0; bossHealthBar.alpha = 0; bossNameTxt.alpha = 0; // Touch/drag controls function handleMove(x, y, obj) { if (dragNode) { // Keep player within screen bounds dragNode.x = Math.max(40, Math.min(2008, x)); dragNode.y = Math.max(100, Math.min(2632, y)); } } game.move = handleMove; game.down = function (x, y, obj) { dragNode = player; handleMove(x, y, obj); }; game.up = function (x, y, obj) { dragNode = null; }; game.update = function () { // Boss spawning logic if (!bossActive && LK.getScore() >= nextBossScore) { bossActive = true; boss = new BossShip(); boss.x = 1024; boss.y = -200; game.addChild(boss); LK.getSound('bossSpawn').play(); // Show boss UI bossNameTxt.setText('DESTROYER COMMAND SHIP'); tween(bossHealthBarBg, { alpha: 1 }, { duration: 500 }); tween(bossHealthBar, { alpha: 1 }, { duration: 500 }); tween(bossNameTxt, { alpha: 1 }, { duration: 500 }); // Clear regular enemies during boss fight for (var i = enemies.length - 1; i >= 0; i--) { enemies[i].destroy(); enemies.splice(i, 1); } } // Update boss health bar if (bossActive && boss) { var healthPercent = boss.health / boss.maxHealth; var barWidth = Math.floor(healthPercent * 20); var bgWidth = 20; bossHealthBarBg.setText('░'.repeat(bgWidth)); bossHealthBar.setText('█'.repeat(barWidth)); } // Update difficulty over time (only when boss is not active) if (!bossActive) { difficultyTimer++; if (difficultyTimer % 600 == 0) { // Every 10 seconds enemySpawnInterval = Math.max(30, enemySpawnInterval - 10); // Faster spawning, minimum 0.5 seconds } } // Update upgrade timers if (playerUpgrades.rapidFire) { playerUpgrades.rapidFireTimer--; if (playerUpgrades.rapidFireTimer <= 0) { playerUpgrades.rapidFire = false; // Flash effect when upgrade expires LK.effects.flashObject(player, 0x00ff00, 300); } } if (playerUpgrades.shield) { playerUpgrades.shieldTimer--; if (playerUpgrades.shieldTimer <= 0) { playerUpgrades.shield = false; player.alpha = 1.0; // Reset transparency // Hide shield visual effect tween.stop(player.shieldGraphics); tween(player.shieldGraphics, { alpha: 0 }, { duration: 300, easing: tween.easeOut }); } } if (playerUpgrades.tripleShot) { playerUpgrades.tripleShotTimer--; if (playerUpgrades.tripleShotTimer <= 0) { playerUpgrades.tripleShot = false; // Flash effect when upgrade expires LK.effects.flashObject(player, 0xff0080, 300); } } // Spawn upgrades upgradeSpawnTimer++; if (upgradeSpawnTimer >= upgradeSpawnInterval) { upgradeSpawnTimer = 0; var upgradeTypes = ['RapidFire', 'Shield', 'TripleShot']; var randomType = upgradeTypes[Math.floor(Math.random() * upgradeTypes.length)]; var upgrade = new Upgrade(randomType); upgrade.x = 100 + Math.random() * 1848; upgrade.y = -50; upgrade.lastY = upgrade.y; upgrades.push(upgrade); game.addChild(upgrade); } // Spawn enemies (only when boss is not active) if (!bossActive) { enemySpawnTimer++; if (enemySpawnTimer >= enemySpawnInterval) { enemySpawnTimer = 0; var enemy = new EnemyShip(); enemy.x = 100 + Math.random() * 1848; // Random x position within screen enemy.y = -50; // Start above screen enemy.lastY = enemy.y; enemy.speed = 2 + Math.random() * 3 + LK.getScore() / 50; // Increase speed with score enemies.push(enemy); game.addChild(enemy); } } // Update and check player bullets for (var i = playerBullets.length - 1; i >= 0; i--) { var bullet = playerBullets[i]; if (bullet.lastY === undefined) bullet.lastY = bullet.y; // Remove bullets that go off screen (increased range) if (bullet.lastY >= -200 && bullet.y < -200) { bullet.destroy(); playerBullets.splice(i, 1); continue; } var hitTarget = false; // Check collision with regular enemies (always check, regardless of boss state) for (var j = enemies.length - 1; j >= 0; j--) { var enemy = enemies[j]; if (bullet.intersects(enemy)) { // Enemy destroyed LK.setScore(LK.getScore() + 25); scoreTxt.setText(LK.getScore()); // Visual effect LK.effects.flashObject(enemy, 0xffffff, 200); // Clean up bullet.destroy(); enemy.destroy(); playerBullets.splice(i, 1); enemies.splice(j, 1); LK.getSound('enemyDestroy').play(); hitTarget = true; break; } } // Only check boss collision if no enemy was hit and boss exists if (!hitTarget && bossActive && boss && bullet.intersects(boss)) { boss.health -= 5; LK.setScore(LK.getScore() + 15); scoreTxt.setText(LK.getScore()); // Visual effect LK.effects.flashObject(boss, 0xffffff, 150); // Check if boss is defeated if (boss.health <= 0) { LK.setScore(LK.getScore() + 200); // Bonus points for boss kill scoreTxt.setText(LK.getScore()); LK.effects.flashObject(boss, 0xffffff, 1000); LK.getSound('bossDestroy').play(); boss.destroy(); boss = null; bossActive = false; nextBossScore = LK.getScore() + 1000; // Next boss after 1000 more points // Hide boss UI tween(bossHealthBarBg, { alpha: 0 }, { duration: 500 }); tween(bossHealthBar, { alpha: 0 }, { duration: 500 }); tween(bossNameTxt, { alpha: 0 }, { duration: 500 }); } bullet.destroy(); playerBullets.splice(i, 1); hitTarget = true; } // Update bullet tracking for next frame if (!hitTarget) { bullet.lastY = bullet.y; } // Update and check boss bullets for (var i = bossBullets.length - 1; i >= 0; i--) { var bullet = bossBullets[i]; if (bullet.lastY === undefined) bullet.lastY = bullet.y; // Remove bullets that go off screen if (bullet.lastY <= 2757 && bullet.y > 2757) { bullet.destroy(); bossBullets.splice(i, 1); continue; } var hitTarget = false; // Check collision with enemy ships (boss bullets can destroy smaller ships) for (var j = enemies.length - 1; j >= 0; j--) { var enemy = enemies[j]; if (bullet.intersects(enemy)) { // Enemy destroyed by boss bullet LK.effects.flashObject(enemy, 0xffffff, 200); bullet.destroy(); enemy.destroy(); bossBullets.splice(i, 1); enemies.splice(j, 1); LK.getSound('enemyDestroy').play(); hitTarget = true; break; } } if (!hitTarget) { // Check collision with player if (bullet.intersects(player)) { if (!playerUpgrades.shield) { LK.effects.flashScreen(0xff0000, 1000); LK.getSound('playerHit').play(); LK.showGameOver(); return; } else { // Shield absorbs the hit bullet.destroy(); bossBullets.splice(i, 1); LK.effects.flashObject(player, 0x0080ff, 200); continue; } } } if (!hitTarget) { bullet.lastY = bullet.y; } } } // Update and check enemy bullets for (var i = enemyBullets.length - 1; i >= 0; i--) { var bullet = enemyBullets[i]; if (bullet.lastY === undefined) bullet.lastY = bullet.y; // Remove bullets that go off screen if (bullet.lastY <= 2757 && bullet.y > 2757) { bullet.destroy(); enemyBullets.splice(i, 1); continue; } // Check collision with player if (bullet.intersects(player)) { if (!playerUpgrades.shield) { LK.effects.flashScreen(0xff0000, 1000); LK.getSound('playerHit').play(); LK.showGameOver(); return; } else { // Shield absorbs the hit bullet.destroy(); enemyBullets.splice(i, 1); LK.effects.flashObject(player, 0x0080ff, 200); continue; } } bullet.lastY = bullet.y; } // Update and check upgrades for (var i = upgrades.length - 1; i >= 0; i--) { var upgrade = upgrades[i]; if (upgrade.lastY === undefined) upgrade.lastY = upgrade.y; // Remove upgrades that go off screen if (upgrade.lastY <= 2757 && upgrade.y > 2757) { upgrade.destroy(); upgrades.splice(i, 1); continue; } // Check collision with player if (upgrade.intersects(player)) { LK.getSound('upgradePickup').play(); if (upgrade.type === 'RapidFire') { playerUpgrades.rapidFire = true; playerUpgrades.rapidFireTimer = 600; // 10 seconds LK.effects.flashObject(player, 0x00ff00, 500); } else if (upgrade.type === 'Shield') { playerUpgrades.shield = true; playerUpgrades.shieldTimer = 600; // 10 seconds player.alpha = 0.7; // Make player semi-transparent to show shield // Show shield visual effect player.shieldGraphics.alpha = 0.6; // Start pulsing animation for shield tween(player.shieldGraphics, { alpha: 0.3 }, { duration: 500, easing: tween.easeInOut, onFinish: function onFinish() { if (playerUpgrades.shield) { tween(player.shieldGraphics, { alpha: 0.6 }, { duration: 500, easing: tween.easeInOut, onFinish: arguments.callee.caller }); } } }); LK.effects.flashObject(player, 0x0080ff, 500); } else if (upgrade.type === 'TripleShot') { playerUpgrades.tripleShot = true; playerUpgrades.tripleShotTimer = 600; // 10 seconds LK.effects.flashObject(player, 0xff0080, 500); } upgrade.destroy(); upgrades.splice(i, 1); continue; } upgrade.lastY = upgrade.y; } // Update and check enemies for (var i = enemies.length - 1; i >= 0; i--) { var enemy = enemies[i]; if (enemy.lastY === undefined) enemy.lastY = enemy.y; // Remove enemies that go off screen if (enemy.lastY <= 2757 && enemy.y > 2757) { enemy.destroy(); enemies.splice(i, 1); continue; } // Check collision with player if (enemy.intersects(player)) { if (!playerUpgrades.shield) { LK.effects.flashScreen(0xff0000, 1000); LK.getSound('playerHit').play(); LK.showGameOver(); return; } else { // Shield absorbs the hit and destroys the enemy LK.setScore(LK.getScore() + 5); // Bonus points for shield collision scoreTxt.setText(LK.getScore()); LK.effects.flashObject(player, 0x0080ff, 200); enemy.destroy(); enemies.splice(i, 1); continue; } } enemy.lastY = enemy.y; } };