/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); var storage = LK.import("@upit/storage.v1"); /**** * Classes ****/ var Button = Container.expand(function (assetId, callback) { var self = Container.call(this); var buttonGraphics = self.attachAsset(assetId, { anchorX: 0.5, anchorY: 0.5, alpha: 0.7 }); self.width = buttonGraphics.width; self.height = buttonGraphics.height; self.callback = callback; self.down = function () { buttonGraphics.alpha = 0.9; self.isPressed = true; if (self.callback) { self.callback(); } }; self.up = function () { buttonGraphics.alpha = 0.7; self.isPressed = false; }; return self; }); var Enemy = Container.expand(function () { var self = Container.call(this); var enemyGraphics = self.attachAsset('enemy', { anchorX: 0.5, anchorY: 0.5 }); self.width = enemyGraphics.width; self.height = enemyGraphics.height; self.health = 2; // Enemy needs 2 hits to die self.movementDirection = Math.random() > 0.5 ? 1 : -1; self.movementSpeed = 2 + Math.random() * 2; self.verticalSpeed = 0.5 + Math.random() * 0.5; self.shootCooldown = 60 + Math.floor(Math.random() * 120); // Method to create explosion animation self.explode = function () { // Stop any movement self.movementSpeed = 0; self.verticalSpeed = 0; // Create explosion animation with tweens tween(enemyGraphics, { alpha: 0, scaleX: 3, scaleY: 3 }, { duration: 800, easing: tween.easeOut }); // Create red pulsing effect with tint tween(enemyGraphics, { tint: 0xff0000 }, { duration: 300, easing: tween.linear }); }; self.update = function () { // Move horizontally self.x += self.movementDirection * self.movementSpeed; // Move vertically (downward) self.y += self.verticalSpeed; // Change direction if at screen edge if (self.x < self.width / 2 || self.x > 2048 - self.width / 2) { self.movementDirection *= -1; } // Maybe shoot self.shootCooldown--; if (self.shootCooldown <= 0) { self.shoot(); self.shootCooldown = 60 + Math.floor(Math.random() * 120); } // Check for player collision if (self.intersects(player)) { gameOver(); } // Remove if off bottom of screen if (self.y > SCREEN_HEIGHT + 100) { self.destroy(); var index = enemies.indexOf(self); if (index > -1) { enemies.splice(index, 1); } } }; self.shoot = function () { // Check if this enemy already has a bullet active var hasActiveBullet = false; for (var i = 0; i < enemyBullets.length; i++) { if (enemyBullets[i].owner === self) { hasActiveBullet = true; break; } } // Only shoot if no active bullet if (!hasActiveBullet) { var bullet = new EnemyBullet(); bullet.x = self.x; bullet.y = self.y + self.height / 2; bullet.owner = self; // Mark which enemy shot this bullet game.addChild(bullet); enemyBullets.push(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.width = bulletGraphics.width; self.height = bulletGraphics.height; self.speed = 12; // Increased speed for faster falling bullets self.update = function () { self.y += self.speed; // Remove if off screen if (self.y > 2732 + 50) { self.destroy(); var index = enemyBullets.indexOf(self); if (index > -1) { enemyBullets.splice(index, 1); } } // Check for player collision if (player && self.intersects(player)) { // Remove bullet self.destroy(); var index = enemyBullets.indexOf(self); if (index > -1) { enemyBullets.splice(index, 1); } // End game gameOver(); } }; return self; }); var Platform = Container.expand(function () { var self = Container.call(this); var platformGraphics = self.attachAsset('platform', { anchorX: 0.5, anchorY: 0.5 }); self.width = platformGraphics.width; self.height = platformGraphics.height; return self; }); var Player = Container.expand(function () { var self = Container.call(this); var playerGraphics = self.attachAsset('player', { anchorX: 0.5, anchorY: 0.5 }); self.width = playerGraphics.width; self.height = playerGraphics.height; self.velocityY = 0; self.velocityX = 0; self.isJumping = false; self.facingRight = true; self.shootCooldown = 0; self.speed = 8; self.explode = function () { // Stop any movement self.velocityX = 0; self.velocityY = 0; // Create explosion animation with tweens tween(playerGraphics, { alpha: 0, scaleX: 3, scaleY: 3 }, { duration: 800, easing: tween.easeOut }); // Create red pulsing effect tween(playerGraphics, { tint: 0xff0000 }, { duration: 300, easing: tween.linear }); }; self.jump = function () { if (!self.isJumping) { self.velocityY = -20; self.isJumping = true; LK.getSound('jump').play(); } }; self.shoot = function () { if (self.shootCooldown <= 0) { var bullet = new PlayerBullet(); bullet.x = self.x; bullet.y = self.y - self.height / 2; bullet.direction = 0; // Direction 0 means upward game.addChild(bullet); playerBullets.push(bullet); self.shootCooldown = 15; LK.getSound('shoot').play(); } }; self.update = function () { // Apply direct movement instead of physics self.x += self.velocityX; // Decrease shoot cooldown if (self.shootCooldown > 0) { self.shootCooldown--; } // Boundary checks if (self.x < self.width / 2) { self.x = self.width / 2; } if (self.x > 2048 - self.width / 2) { self.x = 2048 - self.width / 2; } // Bottom boundary check for player if (self.y < SCREEN_HEIGHT - 300) { self.y = self.y; } else if (self.y > SCREEN_HEIGHT - 150) { self.y = SCREEN_HEIGHT - 150; } // Update facing direction based on velocity if (self.velocityX > 0) { self.facingRight = true; } else if (self.velocityX < 0) { self.facingRight = false; } // Flip player graphic based on direction if (self.facingRight) { playerGraphics.scaleX = 1; } else { playerGraphics.scaleX = -1; } }; self.checkPlatformCollisions = function () { var wasOnPlatform = false; for (var i = 0; i < platforms.length; i++) { var platform = platforms[i]; // Only check for collision if falling if (self.velocityY > 0) { var playerBottom = self.y + self.height / 2; var platformTop = platform.y - platform.height / 2; // If player's bottom is at or slightly below platform top if (Math.abs(playerBottom - platformTop) < 20) { // And player is horizontally within platform bounds if (self.x + self.width / 2 > platform.x - platform.width / 2 && self.x - self.width / 2 < platform.x + platform.width / 2) { // Land on platform self.y = platformTop - self.height / 2; self.velocityY = 0; self.isJumping = false; wasOnPlatform = true; } } } } if (!wasOnPlatform && !self.isJumping && self.velocityY === 0) { self.isJumping = true; } }; return self; }); var PlayerBullet = Container.expand(function () { var self = Container.call(this); var bulletGraphics = self.attachAsset('bullet', { anchorX: 0.5, anchorY: 0.5 }); self.width = bulletGraphics.width; self.height = bulletGraphics.height; self.direction = 1; // 1 for right, -1 for left self.speed = 20; self.update = function () { // If direction is 0, move upward, otherwise use horizontal movement if (self.direction === 0) { self.y -= self.speed; } else { self.x += self.speed * self.direction; } // Remove if off screen if (self.x < -50 || self.x > 2048 + 50 || self.y < -50) { self.destroy(); var index = playerBullets.indexOf(self); if (index > -1) { playerBullets.splice(index, 1); } } // Check for enemy collisions for (var i = enemies.length - 1; i >= 0; i--) { var enemy = enemies[i]; if (self.intersects(enemy)) { // Remove bullet self.destroy(); var bulletIndex = playerBullets.indexOf(self); if (bulletIndex > -1) { playerBullets.splice(bulletIndex, 1); } // Reduce enemy health enemy.health -= 1; // Flash enemy to show damage - different color based on remaining health if (enemy.health == 1) { LK.effects.flashObject(enemy, 0xff9900, 300); // Orange flash for 1 health remaining } else { LK.effects.flashObject(enemy, 0xff0000, 300); // Red flash for other cases } // Play hit sound LK.getSound('enemyHit').play(); // Check if enemy is dead if (enemy.health <= 0) { // Play explosion animation enemy.explode(); // Remove enemy after animation completes LK.setTimeout(function () { enemy.destroy(); var enemyIndex = enemies.indexOf(enemy); if (enemyIndex > -1) { enemies.splice(enemyIndex, 1); } }, 800); // Increase score LK.setScore(LK.getScore() + 10); scoreTxt.setText(LK.getScore()); } break; } } // Check for enemy bullet collisions for (var i = enemyBullets.length - 1; i >= 0; i--) { var enemyBullet = enemyBullets[i]; if (self.intersects(enemyBullet)) { // Remove enemy bullet enemyBullet.destroy(); var enemyBulletIndex = enemyBullets.indexOf(enemyBullet); if (enemyBulletIndex > -1) { enemyBullets.splice(enemyBulletIndex, 1); } // Remove player bullet self.destroy(); var playerBulletIndex = playerBullets.indexOf(self); if (playerBulletIndex > -1) { playerBullets.splice(playerBulletIndex, 1); } // Flash effect for bullet collision LK.effects.flashObject(enemyBullet, 0xffff00, 100); // Increase score slightly LK.setScore(LK.getScore() + 1); scoreTxt.setText(LK.getScore()); break; } } }; return self; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x000000 }); /**** * Game Code ****/ // Constants var GRAVITY = 0.8; var SCREEN_WIDTH = 2048; var SCREEN_HEIGHT = 2732; var PLATFORM_COUNT = 8; var MAX_ENEMIES = 6; // Game variables var player; var platforms = []; var playerBullets = []; var enemies = []; var enemyBullets = []; var gameStarted = false; var spawnTimer = 0; var jumpButton, shootButton, moveLeftButton, moveRightButton; var scoreTxt; function initGame() { // Add background var background = LK.getAsset('background', { anchorX: 0, anchorY: 0, x: 0, y: 0 }); game.addChild(background); // Add score display scoreTxt = new Text2('0', { size: 80, fill: 0xFFFFFF }); scoreTxt.anchor.set(1, 0); LK.gui.topRight.addChild(scoreTxt); scoreTxt.x = -20; scoreTxt.y = 20; // Create player player = new Player(); player.x = SCREEN_WIDTH / 2; player.y = SCREEN_HEIGHT - 200; // Position at bottom of screen game.addChild(player); // Create initial platforms generatePlatforms(); // Create UI controls createControls(); // Start game music LK.playMusic('gameMusic'); // Remove start screen text if (startText && startText.parent) { startText.parent.removeChild(startText); } if (instructionsText && instructionsText.parent) { instructionsText.parent.removeChild(instructionsText); } // Set game as started gameStarted = true; } function generatePlatforms() { // No platforms needed for vertical shooter } function createControls() { // Shoot button shootButton = new Button('shootButton', function () { player.shoot(); }); shootButton.x = SCREEN_WIDTH - 200; shootButton.y = SCREEN_HEIGHT - 200; game.addChild(shootButton); // Move left button moveLeftButton = new Button('moveLeftButton'); moveLeftButton.x = 200; moveLeftButton.y = SCREEN_HEIGHT - 200; game.addChild(moveLeftButton); // Move right button moveRightButton = new Button('moveRightButton'); moveRightButton.x = 400; moveRightButton.y = SCREEN_HEIGHT - 200; game.addChild(moveRightButton); } function spawnEnemy() { if (enemies.length < MAX_ENEMIES) { var enemy = new Enemy(); enemy.x = Math.random() * (SCREEN_WIDTH - 200) + 100; enemy.y = 100; game.addChild(enemy); enemies.push(enemy); } } function gameOver() { LK.getSound('playerHit').play(); LK.effects.flashScreen(0xff0000, 500); // Trigger player explosion animation player.explode(); // Delay the game over screen to let explosion animation play LK.setTimeout(function () { LK.showGameOver(); }, 800); } function handleMove(x, y, obj) { // We don't need to handle move events for this game } function handleDown(x, y, obj) { // Start the game on first touch if not started if (!gameStarted) { initGame(); return; } } function handleUp(x, y, obj) { // We'll handle button releases in their own event handlers } // Game event handlers game.move = handleMove; game.down = handleDown; game.up = handleUp; // Main game update loop game.update = function () { if (!gameStarted) { return; } // Handle player movement from buttons if (moveLeftButton.isPressed) { player.velocityX = -player.speed; } else if (moveRightButton.isPressed) { player.velocityX = player.speed; } else { player.velocityX = 0; } // Update player player.update(); // Update player bullets for (var i = playerBullets.length - 1; i >= 0; i--) { playerBullets[i].update(); } // Update enemies for (var i = 0; i < enemies.length; i++) { enemies[i].update(); } // Update enemy bullets for (var i = enemyBullets.length - 1; i >= 0; i--) { enemyBullets[i].update(); } // Spawn enemies spawnTimer++; if (spawnTimer >= 120) { // Every 2 seconds spawnEnemy(); spawnTimer = 0; } // No screen boundary game over for vertical shooter }; // Start screen message var startText = new Text2('Tap to Start', { size: 70, fill: 0xFFFFFF }); startText.anchor.set(0.5, 0.5); startText.x = SCREEN_WIDTH / 2; startText.y = SCREEN_HEIGHT / 2; game.addChild(startText); // Instructions var instructionsText = new Text2('Use left/right buttons to move\nTap Shoot to fire at enemies from above', { size: 40, fill: 0xCCCCCC }); instructionsText.anchor.set(0.5, 0.5); instructionsText.x = SCREEN_WIDTH / 2; instructionsText.y = SCREEN_HEIGHT / 2 + 200; game.addChild(instructionsText); ;