/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); /**** * Classes ****/ var Boss = Container.expand(function () { var self = Container.call(this); // Boss main body (larger than regular enemy) var bossBody = self.attachAsset('enemyShipBody', { anchorX: 0.5, anchorY: 0.5, scaleX: 4, scaleY: 4 }); // Boss wings (scaled up) var bossWings = self.attachAsset('enemyShipWings', { anchorX: 0.5, anchorY: 0.5, x: 0, y: -60, scaleX: 5, scaleY: 3 }); // Boss core (scaled up) var bossCore = self.attachAsset('enemyShipCore', { anchorX: 0.5, anchorY: 0.5, x: 0, y: 0, scaleX: 3, scaleY: 3 }); // Boss thruster (scaled up) var bossThruster = self.attachAsset('enemyShipThruster', { anchorX: 0.5, anchorY: 0.5, x: 0, y: 120, scaleX: 4, scaleY: 4 }); self.health = 50; self.maxHealth = 50; self.speed = 1; self.shootTimer = 0; self.shootInterval = 30; self.moveTimer = 0; self.moveDirection = 1; self.lastHealth = self.health; self.update = function () { // Boss movement pattern - side to side self.moveTimer++; if (self.moveTimer % 120 == 0) { self.moveDirection *= -1; } self.x += self.moveDirection * 2; // Keep boss on screen if (self.x <= 200) { self.x = 200; self.moveDirection = 1; } if (self.x >= 1848) { self.x = 1848; self.moveDirection = -1; } // Boss shooting - multiple bullets self.shootTimer++; if (self.shootTimer >= self.shootInterval) { self.shootTimer = 0; // Fire 5 bullets in spread pattern for (var bulletIndex = 0; bulletIndex < 5; bulletIndex++) { var bullet = new EnemyBullet(); bullet.x = self.x + (bulletIndex - 2) * 50; bullet.y = self.y + 80; bullet.lastY = bullet.y; bullet.speed = 6; enemyBullets.push(bullet); game.addChild(bullet); } } }; 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 = -12; 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 enemies = []; var bosses = []; var upgrades = []; 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; // Upgrade system var playerUpgrades = { rapidFire: false, rapidFireTimer: 0, shield: false, shieldTimer: 0, tripleShot: false, tripleShotTimer: 0 }; // Player stats var playerStats = { damage: 1, speed: 1 }; // 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()); // Create boss health bar (initially hidden) var bossHealthBarBg = LK.getAsset('bossHealthBarBg', { anchorX: 0.5, anchorY: 0, alpha: 0 }); var bossHealthBarFill = LK.getAsset('bossHealthBarFill', { anchorX: 0, anchorY: 0, alpha: 0 }); bossHealthBarBg.x = 0; bossHealthBarBg.y = 220; bossHealthBarFill.x = -200; bossHealthBarFill.y = 0; LK.gui.top.addChild(bossHealthBarBg); bossHealthBarBg.addChild(bossHealthBarFill); // Boss health bar text var bossHealthTxt = new Text2('BOSS', { size: 40, fill: 0xff0000 }); bossHealthTxt.anchor.set(0.5, 0); bossHealthTxt.x = 0; bossHealthTxt.y = 250; bossHealthTxt.alpha = 0; LK.gui.top.addChild(bossHealthTxt); // Stick control variables var stickActive = false; var stickStartX = 0; var stickStartY = 0; var stickCurrentX = 0; var stickCurrentY = 0; var maxStickDistance = 150; // Touch controls for stick movement function handleMove(x, y, obj) { if (stickActive) { stickCurrentX = x; stickCurrentY = y; // Calculate distance from start point var deltaX = stickCurrentX - stickStartX; var deltaY = stickCurrentY - stickStartY; var distance = Math.sqrt(deltaX * deltaX + deltaY * deltaY); // Limit stick movement to max distance if (distance > maxStickDistance) { var angle = Math.atan2(deltaY, deltaX); deltaX = Math.cos(angle) * maxStickDistance; deltaY = Math.sin(angle) * maxStickDistance; stickCurrentX = stickStartX + deltaX; stickCurrentY = stickStartY + deltaY; } } } game.move = handleMove; game.down = function (x, y, obj) { stickActive = true; stickStartX = x; stickStartY = y; stickCurrentX = x; stickCurrentY = y; }; game.up = function (x, y, obj) { stickActive = false; }; game.update = function () { // Move player based on stick input if (stickActive) { var deltaX = stickCurrentX - stickStartX; var deltaY = stickCurrentY - stickStartY; // Normalize movement based on stick distance var moveSpeed = 16 * playerStats.speed; var normalizedX = deltaX / maxStickDistance; var normalizedY = deltaY / maxStickDistance; // Apply movement player.x += normalizedX * moveSpeed; player.y += normalizedY * moveSpeed; // Keep player within screen bounds player.x = Math.max(40, Math.min(2008, player.x)); player.y = Math.max(100, Math.min(2632, player.y)); } // Update difficulty over time 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 (but not during boss battles) enemySpawnTimer++; if (enemySpawnTimer >= enemySpawnInterval && bosses.length === 0) { 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 if (bullet.lastY >= -25 && bullet.y < -25) { bullet.destroy(); playerBullets.splice(i, 1); continue; } // Check collision with enemies var hitEnemy = false; for (var j = enemies.length - 1; j >= 0; j--) { var enemy = enemies[j]; if (bullet.intersects(enemy)) { // Deal damage based on upgrade level enemy.health -= playerStats.damage; bullet.destroy(); playerBullets.splice(i, 1); hitEnemy = true; if (enemy.health <= 0) { // Enemy destroyed LK.setScore(LK.getScore() + 10); scoreTxt.setText(LK.getScore()); // Visual effect LK.effects.flashObject(enemy, 0xffffff, 200); // Clean up enemy.destroy(); enemies.splice(j, 1); LK.getSound('enemyDestroy').play(); } else { // Enemy damaged but not destroyed LK.effects.flashObject(enemy, 0xff0000, 100); } break; } } if (!hitEnemy) { 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.showGameOver(); return; } else { // Shield absorbs the hit LK.effects.flashObject(player, 0x0080ff, 200); } bullet.destroy(); enemyBullets.splice(i, 1); 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; } // Boss spawn logic - spawn immediately at 500 points and stay until killed var currentScore = LK.getScore(); var shouldSpawnBoss = false; if (currentScore >= 500 && bosses.length === 0) { shouldSpawnBoss = true; } if (shouldSpawnBoss) { var boss = new Boss(); boss.x = 1024; boss.y = 200; boss.lastY = boss.y; boss.lastHealth = boss.health; bosses.push(boss); game.addChild(boss); LK.effects.flashScreen(0xff0000, 500); // Show boss health bar bossHealthBarBg.alpha = 1; bossHealthBarFill.alpha = 1; bossHealthTxt.alpha = 1; } // Update and check bosses for (var i = bosses.length - 1; i >= 0; i--) { var boss = bosses[i]; if (boss.lastY === undefined) { boss.lastY = boss.y; } if (boss.lastHealth === undefined) { boss.lastHealth = boss.health; } // Check collision with player bullets for (var j = playerBullets.length - 1; j >= 0; j--) { var bullet = playerBullets[j]; if (bullet.intersects(boss)) { boss.health -= playerStats.damage; LK.effects.flashObject(boss, 0xffffff, 100); bullet.destroy(); playerBullets.splice(j, 1); // Update boss health bar var healthPercentage = boss.health / boss.maxHealth; bossHealthBarFill.scaleX = healthPercentage; if (boss.health <= 0) { // Boss defeated LK.setScore(LK.getScore() + 500); scoreTxt.setText(LK.getScore()); LK.effects.flashObject(boss, 0xffffff, 1000); boss.destroy(); bosses.splice(i, 1); LK.getSound('enemyDestroy').play(); // Hide boss health bar bossHealthBarBg.alpha = 0; bossHealthBarFill.alpha = 0; bossHealthTxt.alpha = 0; break; } } } // Check collision with player if (boss.intersects(player)) { if (!playerUpgrades.shield) { LK.showGameOver(); return; } else { LK.setScore(LK.getScore() + 10); scoreTxt.setText(LK.getScore()); LK.effects.flashObject(player, 0x0080ff, 200); } } boss.lastY = boss.y; boss.lastHealth = boss.health; } // 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.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; } };