/**** * Classes ****/ // Boss class var Boss = Container.expand(function () { var self = Container.call(this); var bossGraphics = self.attachAsset('boss', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 2; self.health = 100; self.healthBar = self.attachAsset('bossHealthBar', { anchorX: 0.5, anchorY: 0 }); self.healthBar.y = -bossGraphics.height / 2 - self.healthBar.height / 2; self.update = function () { if (self.y < 2732 * 0.3) { self.speed += self.acceleration; self.y += self.speed; } else { // Add dynamic movement to the boss self.y += Math.sin(LK.ticks / 30) * 1; } self.healthBar.width = bossGraphics.width * (self.health / 100); if (self.health <= 0) { // Spawn a series of enemy bullets that radiate out in a circle var numBullets = 12; for (var i = 0; i < numBullets; i++) { var angle = i / numBullets * 2 * Math.PI; var bullet = new EnemyBullet(); bullet.x = self.x; bullet.y = self.y; bullet.direction = { x: Math.cos(angle), y: Math.sin(angle) }; game.addChild(bullet); enemyBullets.push(bullet); } self.destroy(); bosses.splice(bosses.indexOf(self), 1); } if (self.y > 2732 + bossGraphics.height) { self.destroy(); bosses.splice(bosses.indexOf(self), 1); } }; self.shoot = function () { var bullet = new EnemyBullet(); bullet.x = self.x; bullet.y = self.y + bossGraphics.height / 2; var dx = lastMousePosition.x - self.x; var dy = lastMousePosition.y - self.y; var distance = Math.sqrt(dx * dx + dy * dy); bullet.direction = { x: dx / distance, y: dy / distance }; game.addChild(bullet); enemyBullets.push(bullet); }; }); // Enemy class var Enemy = Container.expand(function () { var self = Container.call(this); var enemyGraphics = self.attachAsset('enemy', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 5; self.update = function () { self.y += self.speed; if (self.y > 2732 + enemyGraphics.height) { self.destroy(); enemies.splice(enemies.indexOf(self), 1); } }; self.shoot = function () { var bullet = new EnemyBullet(); bullet.x = self.x; bullet.y = self.y + enemyGraphics.height / 2; // Calculate the direction vector towards the hero's last known position var dx = lastMousePosition.x - self.x; var dy = lastMousePosition.y - self.y; var distance = Math.sqrt(dx * dx + dy * dy); // Normalize the direction vector bullet.direction = { x: dx / distance, y: dy / distance }; game.addChild(bullet); enemyBullets.push(bullet); }; }); // EnemyBullet class var EnemyBullet = Container.expand(function () { var self = Container.call(this); var bulletGraphics = self.attachAsset('enemyBullet', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 20; self.update = function () { self.x += self.direction.x * self.speed; self.y += self.direction.y * self.speed; if (self.y > 2732 + bulletGraphics.height || self.x < -bulletGraphics.width || self.x > 2048 + bulletGraphics.width) { self.destroy(); enemyBullets.splice(enemyBullets.indexOf(self), 1); } else if (self.intersects(hero)) { hero.health -= 10; // decrease hero's health by 10 LK.effects.flashObject(hero, 0xff0000, 500); // flash hero red for 500ms self.destroy(); enemyBullets.splice(enemyBullets.indexOf(self), 1); } }; }); // // Hero class var Hero = Container.expand(function () { var self = Container.call(this); self.health = 100; var heroGraphics = self.attachAsset('hero', { anchorX: 0.5, anchorY: 0.5 }); self.healthBar = self.attachAsset('healthBar', { anchorX: 0.5, anchorY: 0 }); self.healthBar.y = -heroGraphics.height / 2 - self.healthBar.height / 2; self.speed = 10; self.update = function () { // Hero update logic var dx = lastMousePosition.x - self.x; var dy = lastMousePosition.y - self.y; var distance = Math.sqrt(dx * dx + dy * dy); if (distance > self.speed) { self.x += dx / distance * self.speed; self.y += dy / distance * self.speed; } self.healthBar.width = heroGraphics.width * (self.health / 100); }; self.shoot = function () { var bullet = new HeroBullet(); bullet.x = self.x; bullet.y = self.y - heroGraphics.height / 2; game.addChild(bullet); heroBullets.push(bullet); }; }); // HeroBullet class var HeroBullet = Container.expand(function () { var self = Container.call(this); var bulletGraphics = self.attachAsset('heroBullet', { anchorX: 0.5, anchorY: 0.5 }); self.speed = -1.5; self.acceleration = -5; self.update = function () { self.speed += self.acceleration * 0.1; // Increase speed by acceleration factor self.y += self.speed; if (self.y < -bulletGraphics.height) { self.destroy(); heroBullets.splice(heroBullets.indexOf(self), 1); } else { for (var i = bosses.length - 1; i >= 0; i--) { if (self.intersects(bosses[i])) { bosses[i].health -= 10; LK.effects.flashObject(bosses[i], 0xff0000, 500); // flash boss red for 500ms LK.getSound('hit').play(); // Play hit sound effect self.destroy(); heroBullets.splice(heroBullets.indexOf(self), 1); break; } } } }; }); // Particle class var Particle = Container.expand(function () { var self = Container.call(this); var particleGraphics = self.attachAsset('particle', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 10; particleGraphics.blendMode = 1; self.alpha = 1; self.update = function () { self.y += self.speed; self.alpha -= 0.0167; if (self.alpha <= 0) { self.alpha = 1; self.y = hero.y + hero.height / 2 + (Math.random() * 100 - 50); self.x = hero.x + (Math.random() * 100 - 50); } }; }); // PowerUp class var PowerUp = Container.expand(function () { var self = Container.call(this); var powerUpGraphics = self.attachAsset('powerUp', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 1.5; self.update = function () { self.y += self.speed; if (self.y > 2732 + powerUpGraphics.height) { self.destroy(); powerUps.splice(powerUps.indexOf(self), 1); } else if (self.intersects(hero)) { activatePowerUp(); self.destroy(); powerUps.splice(powerUps.indexOf(self), 1); } }; }); // Star class var Star = Container.expand(function () { var self = Container.call(this); var starGraphics = self.attachAsset('star', { anchorX: 0.5, anchorY: 0.5 }); self.speed = Math.random() * 5 + 1; // Random speed for parallax effect // Make stars that are moving slower smaller and more transparent starGraphics.scale.set(self.speed / 6); starGraphics.alpha = Math.min(self.speed / 6, 0.5); self.update = function () { self.y += self.speed; if (self.y > 2732 + starGraphics.height) { self.y = -starGraphics.height; self.x = Math.random() * 2048; // Random x position } }; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x000000 //Init game with black background }); /**** * Game Code ****/ // Spawn a new power-up function spawnPowerUp() { var powerUp = new PowerUp(); powerUp.x = Math.random() * 2048; powerUp.y = -powerUp.height; game.addChild(powerUp); powerUps.push(powerUp); } // Activate power-up function activatePowerUp() { hero.shoot = function () { var bullet1 = new HeroBullet(); var bullet2 = new HeroBullet(); bullet1.x = hero.x - 60; bullet2.x = hero.x + 60; bullet1.y = bullet2.y = hero.y - hero.height / 2; game.addChild(bullet1); game.addChild(bullet2); heroBullets.push(bullet1); heroBullets.push(bullet2); }; LK.setTimeout(function () { hero.shoot = function () { var bullet = new HeroBullet(); bullet.x = hero.x; bullet.y = hero.y - hero.height / 2; game.addChild(bullet); heroBullets.push(bullet); }; }, 5000); } // Check for game over condition function checkGameOver() { if (hero.health <= 0) { // Flash screen red for 1 second (1000ms) to show we are dead. LK.effects.flashScreen(0xff0000, 1000); // Show game over. The game will be automatically paused while game over is showing. LK.showGameOver(); // Calling this will destroy the 'Game' and reset entire game state. } } // Initialize arrays and variables var hero; var heroBullets = []; var enemyBullets = []; var bosses = []; var enemies = []; var score = 0; var scoreTxt; var powerUps = []; var particles = []; var lastMousePosition = { x: 0, y: 0 }; // Initialize game elements function initGame() { // Create star field for (var i = 0; i < 100; i++) { var star = new Star(); star.x = Math.random() * 2048; // Random x position star.y = Math.random() * 2732; // Random y position game.addChild(star); } // Create a container for particles var particleContainer = new Container(); game.addChild(particleContainer); // Create hero hero = new Hero(); hero.x = 2048 / 2; hero.y = 2732 - 200; game.addChild(hero); // Create particles for (var i = 0; i < 20; i++) { var particle = new Particle(); particle.x = hero.x; particle.y = hero.y + hero.height / 2; particleContainer.addChild(particle); particles.push(particle); } // Create score text scoreTxt = new Text2('0', { size: 200, fill: "#ffffff", font: "'GillSans-Bold',Impact,'Arial Black',Tahoma" }); scoreTxt.anchor.set(0.5, 0); LK.gui.top.addChild(scoreTxt); // Set up game update loop game.update = function () { // Update hero hero.update(); // Update hero bullets for (var i = heroBullets.length - 1; i >= 0; i--) { heroBullets[i].update(); } // Update particles for (var i = particles.length - 1; i >= 0; i--) { particles[i].update(); } // Spawn particles every 5 ticks if (LK.ticks % 5 == 0) { var particle = new Particle(); particle.x = hero.x; particle.y = hero.y + hero.height / 2; particleContainer.addChild(particle); particles.push(particle); } // Hero auto-fires bullets at a faster rate (50% increase) if (LK.ticks % 40 == 0) { hero.shoot(); } // Update enemies for (var j = enemies.length - 1; j >= 0; j--) { enemies[j].update(); if (LK.ticks % 120 == 0) { enemies[j].shoot(); } } // Update power-ups for (var k = powerUps.length - 1; k >= 0; k--) { powerUps[k].update(); } // Check for collisions and game over condition checkCollisions(); checkGameOver(); // Check if hero intersects with any enemy for (var i = 0; i < enemies.length; i++) { if (hero.intersects(enemies[i])) { // Flash screen red for 1 second (1000ms) to show we are dead. LK.effects.flashScreen(0xff0000, 1000); // Show game over. The game will be automatically paused while game over is showing. LK.showGameOver(); // Calling this will destroy the 'Game' and reset entire game state. break; } } // Update bosses for (var i = bosses.length - 1; i >= 0; i--) { bosses[i].update(); if (LK.ticks % 40 == 0) { bosses[i].shoot(); } } // Check for collisions between hero bullets and bosses for (var i = heroBullets.length - 1; i >= 0; i--) { for (var j = bosses.length - 1; j >= 0; j--) { if (heroBullets[i].intersects(bosses[j])) { // Decrease boss's health bosses[j].health -= 10; // Destroy bullet heroBullets[i].destroy(); heroBullets.splice(i, 1); // Destroy boss if its health is 0 if (bosses[j].health <= 0) { bosses[j].destroy(); bosses.splice(j, 1); } break; } } } // Spawn enemies if (LK.ticks % 90 == 0) { spawnEnemy(); } // Spawn power-ups if (LK.ticks % 600 == 0) { spawnPowerUp(); } }; // Set up game controls game.down = function (x, y, obj) { // hero.shoot(); removed this line }; game.move = function (x, y, obj) { lastMousePosition = { x: x, y: y }; }; } // Check for collisions between hero bullets and enemies function checkCollisions() { for (var i = heroBullets.length - 1; i >= 0; i--) { for (var j = enemies.length - 1; j >= 0; j--) { if (heroBullets[i].intersects(enemies[j])) { // Destroy enemy and bullet enemies[j].destroy(); heroBullets[i].destroy(); LK.getSound('hit').play(); // Play hit sound effect enemies.splice(j, 1); heroBullets.splice(i, 1); // Update score score += 10; scoreTxt.setText(score); // Spawn a boss enemy for every enemy killed if (bosses.length == 0) { var boss = new Boss(); boss.x = 2048 / 2; boss.y = -boss.height; game.addChild(boss); bosses.push(boss); } break; } } } } // Spawn a new enemy function spawnEnemy() { var enemy = new Enemy(); enemy.x = Math.random() * 2048; enemy.y = -enemy.height; game.addChild(enemy); enemies.push(enemy); } // Initialize the game initGame();

Space Shooter (Stream #1) by Benjaminsen

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