/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); var storage = LK.import("@upit/storage.v1"); var facekit = LK.import("@upit/facekit.v1"); /**** * Classes ****/ var Asteroid = Container.expand(function () { var self = Container.call(this); var asteroidGraphics = self.attachAsset('asteroid', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 2 + Math.random() * 3; self.rotationSpeed = (Math.random() - 0.5) * 0.05; self.health = 2; self.points = 5; self.update = function () { self.y += self.speed; asteroidGraphics.rotation += self.rotationSpeed; // Remove if off screen if (self.y > 2732 + 100) { self.destroy(); var index = game.asteroids.indexOf(self); if (index !== -1) { game.asteroids.splice(index, 1); } } }; self.takeDamage = function () { self.health--; if (self.health <= 0) { // Create explosion var explosion = new Explosion(); explosion.x = self.x; explosion.y = self.y; game.addChild(explosion); // Update score game.addScore(self.points); // Remove asteroid self.destroy(); var index = game.asteroids.indexOf(self); if (index !== -1) { game.asteroids.splice(index, 1); } LK.getSound('explosion').play(); } else { // Tint red briefly to show damage tween(asteroidGraphics, { tint: 0xff0000 }, { duration: 200, onFinish: function onFinish() { tween(asteroidGraphics, { tint: 0xffffff }, { duration: 200 }); } }); } }; 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 = 3 + Math.random() * 2; self.health = 1; self.points = 10; self.update = function () { self.y += self.speed; // Remove if off screen if (self.y > 2732 + 50) { self.destroy(); var index = game.enemies.indexOf(self); if (index !== -1) { game.enemies.splice(index, 1); } } }; self.takeDamage = function () { self.health--; if (self.health <= 0) { // Create explosion var explosion = new Explosion(); explosion.x = self.x; explosion.y = self.y; game.addChild(explosion); // Update score game.addScore(self.points); // Random chance to spawn powerup if (Math.random() < 0.1) { var powerup = new Powerup(); powerup.x = self.x; powerup.y = self.y; game.addChild(powerup); game.powerups.push(powerup); } // Remove enemy self.destroy(); var index = game.enemies.indexOf(self); if (index !== -1) { game.enemies.splice(index, 1); } LK.getSound('explosion').play(); } }; return self; }); var Explosion = Container.expand(function () { var self = Container.call(this); var explosionGraphics = self.attachAsset('explosion', { anchorX: 0.5, anchorY: 0.5, scaleX: 0.5, scaleY: 0.5 }); // Explosion animation tween(explosionGraphics, { scaleX: 2, scaleY: 2, alpha: 0 }, { duration: 500, onFinish: function onFinish() { self.destroy(); } }); return self; }); var HealthDisplay = Container.expand(function () { var self = Container.call(this); self.healthIcons = []; self.init = function (health) { // Clear existing icons for (var i = 0; i < self.healthIcons.length; i++) { self.removeChild(self.healthIcons[i]); } self.healthIcons = []; // Create health icons for (var i = 0; i < health; i++) { var healthIcon = LK.getAsset('ship', { anchorX: 0.5, anchorY: 0.5, scaleX: 0.4, scaleY: 0.4 }); healthIcon.x = i * 50; self.addChild(healthIcon); self.healthIcons.push(healthIcon); } }; self.updateHealth = function (health) { for (var i = 0; i < self.healthIcons.length; i++) { self.healthIcons[i].alpha = i < health ? 1 : 0.2; } }; return self; }); var Laser = Container.expand(function () { var self = Container.call(this); var laserGraphics = self.attachAsset('laser', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 15; self.update = function () { self.y -= self.speed; // Remove if off screen if (self.y < -50) { self.destroy(); var index = game.lasers.indexOf(self); if (index !== -1) { game.lasers.splice(index, 1); } } }; 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.pulseDirection = 1; self.pulseAmount = 0; self.update = function () { self.y += self.speed; // Pulse animation self.pulseAmount += 0.05 * self.pulseDirection; if (self.pulseAmount >= 1 || self.pulseAmount <= 0) { self.pulseDirection *= -1; } powerupGraphics.alpha = 0.5 + self.pulseAmount * 0.5; // Remove if off screen if (self.y > 2732 + 50) { self.destroy(); var index = game.powerups.indexOf(self); if (index !== -1) { game.powerups.splice(index, 1); } } }; return self; }); var Ship = Container.expand(function () { var self = Container.call(this); var shipGraphics = self.attachAsset('ship', { anchorX: 0.5, anchorY: 0.5 }); self.health = 3; self.speed = 5; self.canShoot = true; self.shootCooldown = 300; // in ms self.invincible = false; self.powerupActive = false; self.shoot = function () { if (!self.canShoot) { return; } var laser = new Laser(); laser.x = self.x; laser.y = self.y - 60; game.addChild(laser); game.lasers.push(laser); LK.getSound('laser_shoot').play(); self.canShoot = false; LK.setTimeout(function () { self.canShoot = true; }, self.shootCooldown); }; self.takeDamage = function () { if (self.invincible) { return; } self.health--; if (self.health <= 0) { LK.showGameOver(); return; } // Flash the ship to indicate damage self.invincible = true; var flashCount = 0; var flashInterval = LK.setInterval(function () { shipGraphics.alpha = shipGraphics.alpha === 1 ? 0.3 : 1; flashCount++; if (flashCount >= 6) { LK.clearInterval(flashInterval); shipGraphics.alpha = 1; self.invincible = false; } }, 200); }; self.activatePowerup = function () { if (self.powerupActive) { return; } self.powerupActive = true; shipGraphics.tint = 0xf1c40f; // yellow tint self.shootCooldown = 150; // faster shooting LK.setTimeout(function () { self.powerupActive = false; shipGraphics.tint = 0xffffff; // reset tint self.shootCooldown = 300; // reset cooldown }, 5000); // 5 seconds }; return self; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x000000 }); /**** * Game Code ****/ // Set background to deep space color game.setBackgroundColor(0x0a0a2a); // Game variables game.score = 0; game.level = 1; game.lasers = []; game.enemies = []; game.asteroids = []; game.powerups = []; game.spawnTimer = 0; game.spawnRate = 60; // frames between spawns game.difficultyTimer = 0; game.difficultyRate = 600; // frames between difficulty increases // Create ship var ship = new Ship(); ship.x = 2048 / 2; ship.y = 2732 - 200; game.addChild(ship); // Create score display var scoreText = new Text2('Score: 0', { size: 60, fill: 0xFFFFFF }); scoreText.anchor.set(0, 0); LK.gui.topRight.addChild(scoreText); scoreText.x = -250; // Offset from right edge // Create level display var levelText = new Text2('Level: 1', { size: 60, fill: 0xFFFFFF }); levelText.anchor.set(0, 0); LK.gui.topRight.addChild(levelText); levelText.x = -250; // Offset from right edge levelText.y = 70; // Position below score // Create health display var healthDisplay = new HealthDisplay(); healthDisplay.init(ship.health); LK.gui.topLeft.addChild(healthDisplay); healthDisplay.x = 150; // Offset to avoid platform menu healthDisplay.y = 50; // Add score helper function game.addScore = function (points) { game.score += points; scoreText.setText('Score: ' + game.score); LK.setScore(game.score); }; // Check collisions between two groups of objects function checkCollisions(groupA, groupB, callback) { for (var i = groupA.length - 1; i >= 0; i--) { for (var j = groupB.length - 1; j >= 0; j--) { if (groupA[i] && groupB[j] && groupA[i].intersects(groupB[j])) { callback(groupA[i], groupB[j]); } } } } // Spawn new enemy function spawnEnemy() { var enemy = new Enemy(); enemy.x = Math.random() * (2048 - 200) + 100; enemy.y = -100; // Increase enemy health and speed based on level enemy.health = Math.min(3, 1 + Math.floor(game.level / 3)); enemy.speed += (game.level - 1) * 0.2; enemy.points = 10 * enemy.health; game.addChild(enemy); game.enemies.push(enemy); } // Spawn new asteroid function spawnAsteroid() { var asteroid = new Asteroid(); asteroid.x = Math.random() * (2048 - 200) + 100; asteroid.y = -150; // Increase asteroid health based on level asteroid.health = Math.min(4, 2 + Math.floor(game.level / 2)); asteroid.points = 5 * asteroid.health; game.addChild(asteroid); game.asteroids.push(asteroid); } // Main game loop game.update = function () { // Check if facekit is initialized if (facekit.noseTip) { // Move ship with nose ship.x = facekit.noseTip.x; // Keep ship within screen bounds ship.x = Math.max(50, Math.min(2048 - 50, ship.x)); // Shoot when mouth is open if (facekit.mouthOpen) { ship.shoot(); } } // Spawn enemies and asteroids game.spawnTimer++; if (game.spawnTimer >= game.spawnRate) { game.spawnTimer = 0; // Randomly choose between enemy and asteroid if (Math.random() < 0.7) { spawnEnemy(); } else { spawnAsteroid(); } // Sometimes spawn multiple if (game.level > 2 && Math.random() < 0.3) { if (Math.random() < 0.5) { spawnEnemy(); } else { spawnAsteroid(); } } } // Increase difficulty over time game.difficultyTimer++; if (game.difficultyTimer >= game.difficultyRate) { game.difficultyTimer = 0; game.level++; game.spawnRate = Math.max(20, game.spawnRate - 5); levelText.setText('Level: ' + game.level); } // Check laser-enemy collisions checkCollisions(game.lasers, game.enemies, function (laser, enemy) { enemy.takeDamage(); laser.destroy(); var index = game.lasers.indexOf(laser); if (index !== -1) { game.lasers.splice(index, 1); } }); // Check laser-asteroid collisions checkCollisions(game.lasers, game.asteroids, function (laser, asteroid) { asteroid.takeDamage(); laser.destroy(); var index = game.lasers.indexOf(laser); if (index !== -1) { game.lasers.splice(index, 1); } }); // Check ship-enemy collisions checkCollisions([ship], game.enemies, function (playerShip, enemy) { enemy.takeDamage(); playerShip.takeDamage(); healthDisplay.updateHealth(playerShip.health); }); // Check ship-asteroid collisions checkCollisions([ship], game.asteroids, function (playerShip, asteroid) { asteroid.takeDamage(); playerShip.takeDamage(); healthDisplay.updateHealth(playerShip.health); }); // Check ship-powerup collisions checkCollisions([ship], game.powerups, function (playerShip, powerup) { playerShip.activatePowerup(); powerup.destroy(); var index = game.powerups.indexOf(powerup); if (index !== -1) { game.powerups.splice(index, 1); } LK.getSound('powerup_collect').play(); game.addScore(50); }); }; // Start background music LK.playMusic('game_music');

Nasal Navigator: Space Shooter by Benjaminsen