/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); /**** * Classes ****/ // Define the Bullet class var Bullet = Container.expand(function () { var self = Container.call(this); var bulletGraphics = self.attachAsset('playerBullet', { anchorX: 0.5, anchorY: 0.5 }); self.speed = -15; self.update = function () { if (self.lastY === undefined) { self.lastY = self.y; } // Initialize lastY for tracking changes on Y self.y += self.speed; if (self.lastY >= -50 && self.y < -50) { self.destroy(); // Destroy bullet var index = playerBullets.indexOf(self); if (index > -1) { playerBullets.splice(index, 1); // Remove bullet from array } } self.lastY = self.y; // Update lastY }; }); // Define the Enemy class var Enemy = Container.expand(function () { var self = Container.call(this); var enemyGraphics = self.attachAsset('enemyShip', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 5; self.update = function () { if (self.lastY === undefined) { self.lastY = self.y; } // Initialize lastY for tracking changes on Y self.y += self.speed; if (self.lastY <= 2732 + 50 && self.y > 2732 + 50) { player.health -= 50; // Reduce player's health by 50% player.hit(); // Update player's health bar and check for game over self.destroy(); // Destroy enemy var index = enemies.indexOf(self); if (index > -1) { enemies.splice(index, 1); // Remove enemy from array } } self.lastY = self.y; // Update lastY }; // Enemy shooting logic var enemyBullet = new EnemyBullet(); enemyBullet.x = self.x; enemyBullet.y = self.y + enemyGraphics.height / 2; // Spawn bullet from the bottom center of the enemy sprite enemyBullet.damage = 10; // Set damage value for enemy bullet enemyBullets.push(enemyBullet); game.addChild(enemyBullet); }); // Define the EnemyBullet class var EnemyBullet = Container.expand(function () { var self = Container.call(this); var bulletGraphics = self.attachAsset('bullet', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 20; self.update = function () { if (self.lastY === undefined) { self.lastY = self.y; } // Initialize lastY for tracking changes on Y self.y += self.speed; if (self.lastY <= 2732 + 50 && self.y > 2732 + 50) { self.destroy(); // Destroy bullet var index = enemyBullets.indexOf(self); if (index > -1) { enemyBullets.splice(index, 1); // Remove bullet from array } } self.lastY = self.y; // Update lastY }; }); // Define the FastEnemy class var FastEnemy = Container.expand(function () { var self = Container.call(this); var fastEnemyGraphics = self.attachAsset('FastEnemy', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 10; // Increased speed for FastEnemy self.update = function () { if (self.lastY === undefined) { self.lastY = self.y; } self.y += self.speed; if (self.lastY <= 2732 + 50 && self.y > 2732 + 50) { player.health -= 50; // Reduce player's health by 50% player.hit(); // Update player's health bar and check for game over self.destroy(); // Destroy enemy var index = enemies.indexOf(self); if (index > -1) { enemies.splice(index, 1); // Remove enemy from array } } self.lastY = self.y; // Update lastY }; }); // // // Define the Player class var Player = Container.expand(function () { var self = Container.call(this); var playerGraphics = self.attachAsset('playerShip', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 10; self.health = 100; // Initialize player health self.healthBar = LK.getAsset('healthBar', { width: self.health * 5, height: 70, // Increase height for better visibility color: 0xFF0000, // Change color to red for better visibility shape: 'box' }); // Initialize health bar self.healthBar.x = 0; // Position health bar at the top left of the screen self.healthBar.y = 0; LK.gui.topLeft.addChild(self.healthBar); // Add health bar to the top left of the screen self.update = function () { // Player update logic self.healthBar.width = self.health * 5; // Update health bar width based on player's health }; self.hit = function () { self.health -= 10; // Decrease health by 10% when hit self.healthBar.width = self.health * 10; // Update health bar width based on player's health if (self.health <= 0) { lives -= 1; // Decrease life count if (lives > 0) { // Remove one life indicator var life = lifeIndicator.pop(); life.destroy(); self.health = 100; // Reset health self.healthBar.width = self.health * 10; // Reset health bar width } else { LK.showGameOver(); // Show game over if no lives left } } }; }); // Define the PowerUp class var PowerUp = Container.expand(function () { var self = Container.call(this); var powerUpGraphics = self.attachAsset('star', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 3; self.update = function () { self.y += self.speed; }; self.applyEffect = function (player) { // Fire 3 bullets in a fan pattern for (var i = -1; i <= 1; i++) { if (playerBullets.length < 3) { // Limit the number of bullets to 3 var bullet = new Bullet(); bullet.x = player.x; bullet.y = player.y; bullet.rotation = i * Math.PI / 6; // 30 degrees in radians bullet.update = function () { this.y += this.speed * Math.cos(this.rotation); this.x += this.speed * Math.sin(this.rotation); }; playerBullets.push(bullet); game.addChild(bullet); } } self.destroy(); }; }); // Define the SeekerEnemy class var SeekerEnemy = Container.expand(function () { var self = Container.call(this); var seekerGraphics = self.attachAsset('enemyShip', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 3; self.update = function () { // Calculate direction towards the player var dx = player.x - self.x; var dy = player.y - self.y; var distance = Math.sqrt(dx * dx + dy * dy); // Normalize direction and move towards the player self.x += dx / distance * self.speed; self.y += dy / distance * self.speed; }; }); // Define the ZigZagEnemy class var ZigZagEnemy = Container.expand(function () { var self = Container.call(this); var zigZagGraphics = self.attachAsset('enemyShip', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 5; self.direction = 1; // 1 for right, -1 for left self.update = function () { if (self.lastY === undefined) { self.lastY = self.y; } self.y += self.speed; self.x += self.direction * 20; // Exaggerated movement left or right if (self.x <= 0 || self.x >= 2048) { self.direction *= -1; // Change direction when hitting screen edges } if (self.lastY <= 2732 + 50 && self.y > 2732 + 50) { player.health -= 50; // Reduce player's health by 50% player.hit(); // Update player's health bar and check for game over self.destroy(); // Destroy enemy var index = enemies.indexOf(self); if (index > -1) { enemies.splice(index, 1); // Remove enemy from array } } self.lastY = self.y; // Update lastY // ZigZagEnemy shooting logic if (enemyBullets.length < 20) { // Limit the number of enemy bullets to 20 var zigZagBullet = new EnemyBullet(); zigZagBullet.x = self.x; zigZagBullet.y = self.y + zigZagGraphics.height / 2; // Spawn bullet from the bottom center of the enemy sprite zigZagBullet.damage = 10; // Set damage value for enemy bullet enemyBullets.push(zigZagBullet); game.addChild(zigZagBullet); } }; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x000000 //Init game with black background }); /**** * Game Code ****/ function refreshGameState() { // Reset player position player.x = 2048 / 2; player.y = 2732 - 200; // Clear existing enemies and bullets enemies.forEach(function (enemy) { return enemy.destroy(); }); playerBullets.forEach(function (bullet) { return bullet.destroy(); }); enemyBullets.forEach(function (bullet) { return bullet.destroy(); }); enemies = []; playerBullets = []; enemyBullets = []; // Reset player health player.health = 100; player.healthBar.width = player.health * 5; // Reset life indicators lifeIndicator.forEach(function (life) { return life.destroy(); }); lifeIndicator = []; for (var i = 0; i < lives; i++) { var life = LK.getAsset('playerShip', { x: scoreTxt.x + scoreTxt.width / 2 + (i + 1) * 100, y: scoreTxt.y, scaleX: 0.5, scaleY: 0.5 }); lifeIndicator.push(life); LK.gui.top.addChild(life); } } // LK.playMusic('SpaceTrack'); // Play 'SpaceTrack' music on game start and throughout the game // Initialize player // Initialize health bar asset var player = game.addChild(new Player()); player.x = 2048 / 2; player.y = 2732 - 200; // Initialize score display var scoreTxt = new Text2('0', { size: 150, fill: 0xFFFFFF }); scoreTxt.anchor.set(0.3, 0); LK.gui.top.addChild(scoreTxt); // Initialize life indicator var lives = 5; var lifeIndicator = []; for (var i = 0; i < lives; i++) { var life = LK.getAsset('playerShip', { x: scoreTxt.x + scoreTxt.width / 2 + (i + 1) * 100, y: scoreTxt.y, scaleX: 0.5, scaleY: 0.5 }); lifeIndicator.push(life); LK.gui.top.addChild(life); } // Initialize enemies array var enemies = []; // Initialize bullets array var playerBullets = []; var enemyBullets = []; // Function to spawn enemies function spawnEnemy() { if (enemies.length < 10) { // Limit the number of enemies to 10 var enemy; if (Math.random() < 0.5) { // 50% chance to spawn a regular enemy enemy = new Enemy(); } else { // 50% chance to spawn a fast enemy enemy = new FastEnemy(); } enemy.x = Math.random() * 2048; enemy.y = -50; enemies.push(enemy); game.addChild(enemy); } // Enemy shooting logic if (enemyBullets.length < 20) { // Limit the number of enemy bullets to 20 if (enemies.length > 0) { var enemy = enemies[enemies.length - 1]; // Get the last enemy in the array var enemyBullet = new EnemyBullet(); enemyBullet.x = enemy.x; enemyBullet.y = enemy.y; enemyBullet.damage = 10; // Set damage value for enemy bullet enemyBullets.push(enemyBullet); game.addChild(enemyBullet); } // Set a timeout to destroy the enemy bullet after 2 seconds LK.setTimeout(function () { enemyBullet.destroy(); var index = enemyBullets.indexOf(enemyBullet); if (index > -1) { enemyBullets.splice(index, 1); } }, 2000); } } // Function to handle player shooting function shootPlayerBullet() { if (playerBullets.length < 20) { // Limit the number of player bullets to 20 var bullet = new Bullet(); bullet.x = player.x; bullet.y = player.y; playerBullets.push(bullet); game.addChild(bullet); // Set a timeout to destroy the bullet after 1 second LK.setTimeout(function () { bullet.destroy(); var index = playerBullets.indexOf(bullet); if (index > -1) { playerBullets.splice(index, 1); } }, 1000); } } // Handle game updates // Create a starfield for the background var starfield = []; for (var i = 0; i < 100; i++) { if (starfield.length < 100) { // Limit the number of stars var star = LK.getAsset('star', { x: Math.random() * 2048, y: Math.random() * 2732 }); star.speed = Math.random() * 5 + 1; starfield.push(star); game.addChild(star); } } game.update = function () { // Update player player.update(); // Update starfield for (var i = 0; i < starfield.length; i++) { var star = starfield[i]; star.y += star.speed; // If the star has moved off the bottom of the screen, reset it at the top if (star.y > 2732) { star.y = 0; star.x = Math.random() * 2048; } } // Update enemies for (var i = enemies.length - 1; i >= 0; i--) { var enemy = enemies[i]; enemy.update(); enemy.speed += 0.01; // Gradually increase enemy speed if (enemy.y > 2732 + 50) { player.health -= 50; // Reduce player's health by 50% player.hit(); // Update player's health bar and check for game over enemy.destroy(); // Destroy enemy enemies.splice(i, 1); // Remove enemy from array continue; // Skip further checks for this enemy } } // Spawn power-up if there are more than 6 enemies on screen if (enemies.length > 6) { var powerUp = new PowerUp(); powerUp.x = Math.random() * 2048; powerUp.y = -50; game.addChild(powerUp); } // Randomly spawn SeekerEnemy if (Math.random() < 0.005) { // 0.5% chance per frame var seekerEnemy = new SeekerEnemy(); seekerEnemy.x = Math.random() * 2048; seekerEnemy.y = -50; enemies.push(seekerEnemy); game.addChild(seekerEnemy); } // Check for collisions between player and power-ups for (var p = game.children.length - 1; p >= 0; p--) { var child = game.children[p]; if (child instanceof PowerUp && player.intersects(child)) { child.applyEffect(player); continue; // Skip further checks for this power-up } } // Level system to increase enemy speed and notify player of new wave var level = 1; var waveNotification = new Text2('Wave 1', { size: 100, fill: 0xFFFFFF }); waveNotification.anchor.set(0.5, 0.5); waveNotification.x = 2048 / 2; waveNotification.y = 2732 / 2; LK.gui.center.addChild(waveNotification); function increaseLevel() { level++; waveNotification.setText('Wave ' + level + ' - New Squadron Approaching'); waveNotification.alpha = 1; waveNotification.fill = 0xFFFFFF; // Set text color to white waveNotification.anchor.set(0.5, 0.5); // Center the text waveNotification.x = 2048 / 2; // Center horizontally waveNotification.y = 2732 / 2; // Center vertically tween(waveNotification, { alpha: 0 }, { duration: 2000 }); // Change background color to rich and mainly darker colors for each new wave function getRandomDarkColor() { var r = Math.floor(Math.random() * 56); // 0-55 for darker red var g = Math.floor(Math.random() * 56); // 0-55 for darker green var b = Math.floor(Math.random() * 56); // 0-55 for darker blue return (r << 16) + (g << 8) + b; } var darkColor = getRandomDarkColor(); game.setBackgroundColor(darkColor); // Increase enemy speed for (var i = 0; i < enemies.length; i++) { enemies[i].speed += 1; } // Introduce new enemy types or patterns based on level if (level % 3 === 0) { // Every 3 levels, introduce a new enemy type or pattern introduceNewEnemyType(); } // Change enemy movement pattern based on level for (var i = 0; i < enemies.length; i++) { if (level % 2 === 0) { // Zigzag pattern for even levels enemies[i].update = function () { this.y += this.speed; this.x += Math.sin(this.y / 50) * 5; // Zigzag movement }; } else { // Circular pattern for odd levels enemies[i].update = function () { this.y += this.speed; this.x += Math.cos(this.y / 50) * 5; // Circular movement }; } } } function introduceNewEnemyType() { // Logic to introduce new enemy types or patterns // This could involve changing enemy behavior, appearance, or introducing new attack patterns console.log("New enemy type introduced!"); } // Increase spawn rate and level over time if (LK.ticks % 600 === 0) { // Every 10 seconds (assuming 60 FPS) spawnInterval = Math.max(500, spawnInterval - 100); // Decrease interval, minimum 500ms LK.clearInterval(spawnEnemyInterval); spawnEnemyInterval = LK.setInterval(spawnEnemy, spawnInterval); increaseLevel(); refreshGameState(); // Refresh the game state when a new wave starts } // Update player bullets for (var j = playerBullets.length - 1; j >= 0; j--) { var bullet = playerBullets[j]; bullet.update(); if (bullet.y < -50) { bullet.destroy(); // Destroy bullet playerBullets.splice(j, 1); // Remove bullet from array continue; // Skip further checks for this bullet } for (var k = enemies.length - 1; k >= 0; k--) { var enemy = enemies[k]; if (enemy.intersects(bullet)) { // Play explosion sound LK.getSound('EnemyExplosion').play(); // Create explosion effect var explosion = LK.getAsset('explosion', { x: enemy.x, y: enemy.y, anchorX: 0.5, anchorY: 0.5 }); game.addChild(explosion); tween(explosion, { scaleX: 2, scaleY: 2 }, { duration: 250, easing: tween.easeOut, onFinish: function onFinish() { tween(explosion, { scaleX: 0, scaleY: 0 }, { duration: 250, easing: tween.easeIn, onFinish: function onFinish() { explosion.destroy(); } }); } }); enemy.destroy(); bullet.destroy(); enemies.splice(k, 1); playerBullets.splice(j, 1); LK.setScore(LK.getScore() + 100); // Increase score by 100 for each enemy killed scoreTxt.setText(LK.getScore()); // Update score display break; } } } // Check for collisions for (var k = enemies.length - 1; k >= 0; k--) { var enemy = enemies[k]; for (var l = playerBullets.length - 1; l >= 0; l--) { var bullet = playerBullets[l]; if (enemy.intersects(bullet)) { // Play explosion sound LK.getSound('EnemyExplosion').play(); // Create explosion effect var explosion = LK.getAsset('explosion', { x: enemy.x, y: enemy.y, anchorX: 0.5, anchorY: 0.5 }); game.addChild(explosion); tween(explosion, { scaleX: 2, scaleY: 2 }, { duration: 250, easing: tween.easeOut, onFinish: function onFinish() { tween(explosion, { scaleX: 0, scaleY: 0 }, { duration: 250, easing: tween.easeIn, onFinish: function onFinish() { explosion.destroy(); } }); } }).destroyOnComplete(); enemy.destroy(); bullet.destroy(); enemies.splice(k, 1); playerBullets.splice(l, 1); LK.setScore(LK.getScore() + 100); // Increase score by 100 for each enemy killed scoreTxt.setText(LK.getScore()); // Update score display break; } } } // Check for collisions between player and enemy bullets for (var m = enemyBullets.length - 1; m >= 0; m--) { var bullet = enemyBullets[m]; if (player.intersects(bullet)) { player.health -= bullet.damage; // Decrease player's health by the damage value of the bullet player.hit(); // Call player's hit method when hit by a bullet LK.effects.flashScreen(0xff0000, 500); // Add screen flash effect when player is hit by enemy bullet bullet.destroy(); // Destroy bullet enemyBullets.splice(m, 1); // Remove bullet from array continue; // Skip further checks for this bullet } } }; // Spawn enemies at random intervals var spawnInterval = Math.floor(Math.random() * 2000) + 500; // Random interval between 500ms and 2000ms var spawnEnemyInterval = LK.setInterval(spawnEnemy, spawnInterval); // Handle player movement game.move = function (x, y, obj) { player.x = x; player.y = y; }; // Handle shooting game.down = function (x, y, obj) { shootPlayerBullet(); shootPlayerBullet(); LK.getSound('PlayerShoot').play(); // Play 'PlayerShoot' sound when player shoots }; // Update enemy bullets for (var j = enemyBullets.length - 1; j >= 0; j--) { var bullet = enemyBullets[j]; bullet.update(); if (bullet.y > 2732 + 50) { bullet.destroy(); // Destroy bullet enemyBullets.splice(j, 1); // Remove bullet from array continue; // Skip further checks for this bullet } } // Check for collisions between player and enemy bullets for (var m = enemyBullets.length - 1; m >= 0; m--) { var bullet = enemyBullets[m]; if (player.intersects(bullet)) { player.hit(); // Call player's hit method when hit by a bullet bullet.destroy(); enemyBullets.splice(m, 1); } }