/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); var storage = LK.import("@upit/storage.v1", { highScore: 0 }); /**** * Classes ****/ var AmmoDisplay = Container.expand(function () { var self = Container.call(this); self.indicators = []; self.player = null; self.init = function (playerRef) { self.player = playerRef; // Clear existing indicators for (var i = 0; i < self.indicators.length; i++) { self.removeChild(self.indicators[i]); } self.indicators = []; // Create new indicators for (var i = 0; i < self.player.maxAmmo; i++) { var indicator = LK.getAsset('ammoIndicator', { anchorX: 0.5, anchorY: 0.5, x: i * 20, y: 0 }); self.addChild(indicator); self.indicators.push(indicator); } }; self.update = function () { if (!self.player) { return; } // Update visibility based on current ammo for (var i = 0; i < self.indicators.length; i++) { self.indicators[i].visible = i < self.player.ammo; // Fade effect when reloading if (self.player.isReloading) { var reloadProgress = 1 - self.player.reloadCounter / self.player.reloadTime; if (i < Math.floor(reloadProgress * self.player.maxAmmo)) { self.indicators[i].visible = true; self.indicators[i].alpha = 0.5; } else { self.indicators[i].visible = false; } } else { self.indicators[i].alpha = 1; } } }; return self; }); var Blood = Container.expand(function () { var self = Container.call(this); var bloodGraphics = self.attachAsset('blood', { anchorX: 0.5, anchorY: 0.5, alpha: 0.8 }); self.lifespan = 60; // Frames self.init = function (x, y) { self.x = x; self.y = y; self.scale.x = 0.5 + Math.random() * 0.5; self.scale.y = 0.5 + Math.random() * 0.5; self.rotation = Math.random() * Math.PI * 2; self.alpha = 0.8; }; self.update = function () { self.lifespan--; if (self.lifespan <= 20) { self.alpha = self.lifespan / 20 * 0.8; } if (self.lifespan <= 0) { self.shouldDestroy = true; } }; return self; }); var Bullet = Container.expand(function () { var self = Container.call(this); var bulletGraphics = self.attachAsset('bullet', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 15; self.damage = 25; self.direction = { x: 0, y: 0 }; self.shooter = null; self.update = function () { self.x += self.direction.x * self.speed; self.y += self.direction.y * self.speed; // Destroy bullet if it goes off screen if (self.x < -50 || self.x > 2098 || self.y < -50 || self.y > 2782) { self.shouldDestroy = true; } }; self.fire = function (startX, startY, targetX, targetY, shooterRef) { self.x = startX; self.y = startY; self.shooter = shooterRef; // Calculate direction var dx = targetX - startX; var dy = targetY - startY; var distance = Math.sqrt(dx * dx + dy * dy); if (distance > 0) { self.direction.x = dx / distance; self.direction.y = dy / distance; } }; return self; }); var HealthBar = Container.expand(function () { var self = Container.call(this); var background = self.attachAsset('healthBarBackground', { anchorX: 0, anchorY: 0 }); var bar = self.attachAsset('healthBar', { anchorX: 0, anchorY: 0, x: 2, y: 2 }); var playerText = new Text2("P1", { size: 20, fill: 0xFFFFFF }); playerText.anchor.set(0.5); playerText.x = background.width / 2; playerText.y = background.height / 2; self.addChild(playerText); self.player = null; self.init = function (playerRef, isPlayer1) { self.player = playerRef; playerText.setText(isPlayer1 ? "P1" : "P2"); }; self.update = function () { if (!self.player) { return; } var healthPercent = self.player.health / self.player.maxHealth; bar.scale.x = healthPercent; }; return self; }); var Player = Container.expand(function () { var self = Container.call(this); self.isPlayer1 = true; // Will be set when initializing var graphicsId = 'player1'; // Default self.health = 100; self.maxHealth = 100; self.moveSpeed = 5; self.fireRate = 15; // Frames between shots self.fireCounter = 0; self.ammo = 12; self.maxAmmo = 12; self.reloadTime = 120; // 2 seconds at 60fps self.reloadCounter = 0; self.isReloading = false; self.isDead = false; self.lastMoveDirection = { x: 0, y: -1 }; // Default facing up self.init = function (isFirstPlayer) { self.isPlayer1 = isFirstPlayer; graphicsId = isFirstPlayer ? 'player1' : 'player2'; if (self.graphics) { self.removeChild(self.graphics); } self.graphics = self.attachAsset(graphicsId, { anchorX: 0.5, anchorY: 0.5, tint: isFirstPlayer ? 0xff0000 : 0x0000ff // Red for player1, Blue for player2 }); self.health = self.maxHealth; var nameTag = new Text2(isFirstPlayer ? "Player 1" : "Player 2", { // Name tag size: 20, fill: 0xFFFFFF }); nameTag.anchor.set(0.5); nameTag.y = -self.graphics.height / 2 - 10; // Position above the player self.addChild(nameTag); self.ammo = self.maxAmmo; self.fireCounter = 0; self.reloadCounter = 0; self.isReloading = false; self.isDead = false; }; self.takeDamage = function (amount) { if (self.isDead) { return; } self.health -= amount; if (self.health <= 0) { self.health = 0; self.die(); } else { // Flash red when hit LK.effects.flashObject(self, self.isPlayer1 ? 0xff0000 : 0x0000ff, 300); // Red flash for player1, Blue flash for player2 LK.getSound('playerHit').play(); } }; self.die = function () { self.isDead = true; self.alpha = 0.5; // Flash red when dead LK.effects.flashObject(self, 0xff0000, 1000); }; self.shoot = function (targetX, targetY) { if (self.isDead || self.isReloading) { return null; } if (self.ammo <= 0) { self.reload(); return null; } if (self.fireCounter <= 0) { // Create bullet var bullet = new Bullet(); bullet.fire(self.x, self.y, targetX, targetY, self); // Update state self.ammo--; self.fireCounter = self.fireRate; // Keep track of facing direction based on shot var dx = targetX - self.x; var dy = targetY - self.y; var distance = Math.sqrt(dx * dx + dy * dy); if (distance > 0) { self.lastMoveDirection.x = dx / distance; self.lastMoveDirection.y = dy / distance; } // Play sound LK.getSound('shoot').play(); if (self.isPlayer1) { LK.getSound('player1Shoot').play(); // Unique sound for player 1 } else { LK.getSound('player2Shoot').play(); // Unique sound for player 2 } return bullet; } return null; }; self.reload = function () { if (self.isDead || self.isReloading || self.ammo === self.maxAmmo) { return; } self.isReloading = true; self.reloadCounter = self.reloadTime; LK.getSound('reload').play(); }; self.move = function (dx, dy) { if (self.isDead) { return; } // If moving, update last move direction if (dx !== 0 || dy !== 0) { var length = Math.sqrt(dx * dx + dy * dy); if (length > 0) { self.lastMoveDirection.x = dx / length; self.lastMoveDirection.y = dy / length; } } // Apply movement var newX = self.x + dx * self.moveSpeed; var newY = self.y + dy * self.moveSpeed; // Constrain to game bounds with a margin var margin = 50; newX = Math.max(margin, Math.min(2048 - margin, newX)); newY = Math.max(margin, Math.min(2732 - margin, newY)); self.x = newX; self.y = newY; }; self.update = function () { // Update reload state if (self.isReloading) { self.reloadCounter--; if (self.reloadCounter <= 0) { self.isReloading = false; self.ammo = self.maxAmmo; } } // Update fire rate counter if (self.fireCounter > 0) { self.fireCounter--; } // AI behavior for Player 2 if (!self.isPlayer1 && !self.isDead) { self.updateAI(); } }; self.updateAI = function () { // Find the nearest zombie var nearestZombie = null; var nearestDistance = Number.MAX_VALUE; for (var i = 0; i < zombies.length; i++) { var zombie = zombies[i]; var distance = getDistance(self, zombie); if (distance < nearestDistance) { nearestDistance = distance; nearestZombie = zombie; } } // Move and shoot logic if (nearestZombie) { // If zombie is close, move away from it if (nearestDistance < 300) { var dx = self.x - nearestZombie.x; var dy = self.y - nearestZombie.y; var length = Math.sqrt(dx * dx + dy * dy); if (length > 0) { dx /= length; dy /= length; self.move(dx, dy); } } // Otherwise, stay close to player 1 else { var distToPlayer1 = getDistance(self, player1); if (distToPlayer1 > 300) { var dx = player1.x - self.x; var dy = player1.y - self.y; var length = Math.sqrt(dx * dx + dy * dy); if (length > 0) { dx /= length; dy /= length; self.move(dx, dy); } } } // Shoot at nearest zombie if not reloading and it's in range if (!self.isReloading && nearestDistance < 600) { var bullet = self.shoot(nearestZombie.x, nearestZombie.y); if (bullet) { bullets.push(bullet); game.addChild(bullet); } } // Reload if low on ammo and no zombies nearby if (self.ammo <= self.maxAmmo / 4 && nearestDistance > 400) { self.reload(); } } }; return self; }); var Zombie = Container.expand(function () { var self = Container.call(this); var zombieGraphics = self.attachAsset('zombie', { anchorX: 0.5, anchorY: 0.5 }); self.health = 100; self.moveSpeed = 2; self.damage = 5; self.attackRate = 60; // 1 second between attacks self.attackCounter = 0; self.isDead = false; self.init = function (x, y, moveSpeed, health) { self.x = x; self.y = y; self.moveSpeed = moveSpeed || 2; self.health = health || 100; }; self.takeDamage = function (amount) { if (self.isDead) { return; } self.health -= amount; // Flash red when hit LK.effects.flashObject(self, 0xff0000, 150); LK.getSound('zombieHit').play(); if (self.health <= 0) { self.die(); } }; self.die = function () { self.isDead = true; self.shouldDestroy = true; // Create blood splatter createBlood(self.x, self.y); // Increase score currentScore += 10; updateScoreText(); }; self.attack = function (player) { if (self.isDead || self.attackCounter > 0) { return; } player.takeDamage(self.damage); self.attackCounter = self.attackRate; }; self.update = function () { if (self.isDead) { return; } // Update attack counter if (self.attackCounter > 0) { self.attackCounter--; } // Target the nearest player that's alive var target = null; if (!player1.isDead && !player2.isDead) { // Target closest player var dist1 = getDistance(self, player1); var dist2 = getDistance(self, player2); target = dist1 < dist2 ? player1 : player2; } else if (!player1.isDead) { target = player1; } else if (!player2.isDead) { target = player2; } if (target) { // Move towards target var dx = target.x - self.x; var dy = target.y - self.y; var distance = Math.sqrt(dx * dx + dy * dy); if (distance > 0) { var moveX = dx / distance * self.moveSpeed; var moveY = dy / distance * self.moveSpeed; self.x += moveX; self.y += moveY; } // Attack if close enough if (distance < 80) { self.attack(target); // Push the player out if they are stuck inside the zombie if (distance < 40) { var pushX = dx / distance * (40 - distance); var pushY = dy / distance * (40 - distance); target.x += pushX; target.y += pushY; } } } }; return self; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x000000 }); /**** * Game Code ****/ // Game state variables var player1; var player2; var player1HealthBar; var player2HealthBar; var player1AmmoDisplay; var player2AmmoDisplay; var bullets = []; var zombies = []; var bloodSplatters = []; var currentWave = 0; var zombiesInWave = 0; var zombiesLeft = 0; var currentScore = 0; var gameActive = false; var waveText; var scoreText; var highScoreText; var gameStartText; var groundTiles = []; // Helper functions function getDistance(obj1, obj2) { var dx = obj1.x - obj2.x; var dy = obj1.y - obj2.y; return Math.sqrt(dx * dx + dy * dy); } function createGround() { var tileSize = 128; var tilesX = Math.ceil(2048 / tileSize); var tilesY = Math.ceil(2732 / tileSize); for (var y = 0; y < tilesY; y++) { for (var x = 0; x < tilesX; x++) { var tile = LK.getAsset('groundTile', { anchorX: 0, anchorY: 0, x: x * tileSize, y: y * tileSize, alpha: 0.3 }); // Add slight randomness to tiles tile.tint = 0x666666 + Math.floor(Math.random() * 0x111111); groundTiles.push(tile); game.addChild(tile); } } } function updateScoreText() { scoreText.setText("Score: " + currentScore); // Update high score if needed if (currentScore > storage.highScore) { storage.highScore = currentScore; highScoreText.setText("High Score: " + storage.highScore); } } function createBlood(x, y) { for (var i = 0; i < 3; i++) { var blood = new Blood(); blood.init(x + (Math.random() * 60 - 30), y + (Math.random() * 60 - 30)); bloodSplatters.push(blood); game.addChild(blood); } } function startGame() { // Reset game state gameActive = true; currentWave = 0; currentScore = 0; // Clear any existing entities clearEntities(); // Create players player1 = new Player(); player1.init(true); player1.x = 2048 / 2 - 150; player1.y = 2732 / 2; game.addChild(player1); player2 = new Player(); player2.init(false); player2.x = 2048 / 2 + 150; player2.y = 2732 / 2; game.addChild(player2); // Create health bars player1HealthBar = new HealthBar(); player1HealthBar.init(player1, true); player1HealthBar.x = 20; player1HealthBar.y = 100; LK.gui.left.addChild(player1HealthBar); player2HealthBar = new HealthBar(); player2HealthBar.init(player2, false); player2HealthBar.x = 20; player2HealthBar.y = 160; LK.gui.left.addChild(player2HealthBar); // Create ammo displays player1AmmoDisplay = new AmmoDisplay(); player1AmmoDisplay.init(player1); player1AmmoDisplay.x = 250; player1AmmoDisplay.y = 115; LK.gui.left.addChild(player1AmmoDisplay); player2AmmoDisplay = new AmmoDisplay(); player2AmmoDisplay.init(player2); player2AmmoDisplay.x = 250; player2AmmoDisplay.y = 175; LK.gui.left.addChild(player2AmmoDisplay); // Add UI elements for health and ammo var player1UI = new Container(); player1UI.addChild(player1HealthBar); player1UI.addChild(player1AmmoDisplay); LK.gui.left.addChild(player1UI); var player2UI = new Container(); player2UI.addChild(player2HealthBar); player2UI.addChild(player2AmmoDisplay); LK.gui.left.addChild(player2UI); // Update score display updateScoreText(); // Start first wave startNextWave(); // Hide start game text gameStartText.visible = false; // Play music LK.playMusic('bgMusic', { fade: { start: 0, end: 0.3, duration: 2000 } }); } function clearEntities() { // Remove all bullets for (var i = 0; i < bullets.length; i++) { if (bullets[i].parent) { bullets[i].parent.removeChild(bullets[i]); } } bullets = []; // Remove all zombies for (var i = 0; i < zombies.length; i++) { if (zombies[i].parent) { zombies[i].parent.removeChild(zombies[i]); } } zombies = []; // Remove all blood splatters for (var i = 0; i < bloodSplatters.length; i++) { if (bloodSplatters[i].parent) { bloodSplatters[i].parent.removeChild(bloodSplatters[i]); } } bloodSplatters = []; // Remove players and their UI if they exist if (player1 && player1.parent) { player1.parent.removeChild(player1); } if (player2 && player2.parent) { player2.parent.removeChild(player2); } // Remove UI elements if they exist if (player1HealthBar && player1HealthBar.parent) { player1HealthBar.parent.removeChild(player1HealthBar); } if (player2HealthBar && player2HealthBar.parent) { player2HealthBar.parent.removeChild(player2HealthBar); } if (player1AmmoDisplay && player1AmmoDisplay.parent) { player1AmmoDisplay.parent.removeChild(player1AmmoDisplay); } if (player2AmmoDisplay && player2AmmoDisplay.parent) { player2AmmoDisplay.parent.removeChild(player2AmmoDisplay); } } function spawnZombie() { if (zombiesLeft <= 0) { return; } var zombie = new Zombie(); // Determine zombie spawn position (outside the screen) var spawnSide = Math.floor(Math.random() * 4); // 0: top, 1: right, 2: bottom, 3: left var x, y; switch (spawnSide) { case 0: // top x = Math.random() * 2048; y = -100; break; case 1: // right x = 2148; y = Math.random() * 2732; break; case 2: // bottom x = Math.random() * 2048; y = 2832; break; case 3: // left x = -100; y = Math.random() * 2732; break; } // Scale zombie difficulty based on wave var healthMultiplier = 1 + currentWave * 0.1; var speedMultiplier = 1 + currentWave * 0.05; zombie.init(x, y, 2 * speedMultiplier, 100 * healthMultiplier); zombies.push(zombie); game.addChild(zombie); zombiesLeft--; } function startNextWave() { currentWave++; zombiesInWave = 5 + currentWave * 3; zombiesLeft = zombiesInWave; waveText.setText("Wave " + currentWave); tween(waveText, { alpha: 1 }, { duration: 500 }); // Play wave start sound LK.getSound('waveStart').play(); // After 2 seconds, fade out the wave text LK.setTimeout(function () { tween(waveText, { alpha: 0 }, { duration: 500 }); }, 2000); // Initial zombie spawn for (var i = 0; i < Math.min(5, zombiesInWave); i++) { spawnZombie(); } } function checkGameOver() { if (!gameActive) { return; } // Game over if both players are dead if (player1.isDead && player2.isDead) { gameActive = false; // Show game over screen after a short delay LK.setTimeout(function () { LK.showGameOver(); }, 1500); // Stop music with fade out LK.playMusic('bgMusic', { fade: { start: 0.3, end: 0, duration: 1500 } }); } } function handlePlayerMovement() { if (!gameActive || player1.isDead) { return; } var dx = 0; var dy = 0; if (moveUp) { dy -= 1; } if (moveDown) { dy += 1; } if (moveLeft) { dx -= 1; } if (moveRight) { dx += 1; } // Normalize diagonal movement if (dx !== 0 && dy !== 0) { var length = Math.sqrt(dx * dx + dy * dy); dx /= length; dy /= length; } player1.move(dx, dy); } // Initialize UI elements function createUI() { // Wave text waveText = new Text2("Wave 1", { size: 100, fill: 0xFFFFFF }); waveText.anchor.set(0.5); waveText.alpha = 0; LK.gui.center.addChild(waveText); // Score text scoreText = new Text2("Score: 0", { size: 40, fill: 0xFFFFFF }); scoreText.anchor.set(0.5, 0); scoreText.y = 20; LK.gui.top.addChild(scoreText); // High score text highScoreText = new Text2("High Score: " + storage.highScore, { size: 30, fill: 0xAAAAAA }); highScoreText.anchor.set(0.5, 0); highScoreText.y = 70; LK.gui.top.addChild(highScoreText); // Game start text gameStartText = new Text2("TAP TO START", { size: 80, fill: 0xFFFFFF }); gameStartText.anchor.set(0.5); LK.gui.center.addChild(gameStartText); // Pulse animation for game start text function pulseText() { tween(gameStartText.scale, { x: 1.1, y: 1.1 }, { duration: 800, easing: tween.sinceOut, onFinish: function onFinish() { tween(gameStartText.scale, { x: 1, y: 1 }, { duration: 800, easing: tween.sinceIn, onFinish: pulseText }); } }); } pulseText(); } // Input tracking variables var moveUp = false; var moveDown = false; var moveLeft = false; var moveRight = false; var isShooting = false; var shootTarget = { x: 0, y: 0 }; // Input handlers game.down = function (x, y, obj) { if (!gameActive) { startGame(); return; } // Determine which side of the screen was pressed if (x < 2048 / 2) { // Left side controls movement var centerX = 2048 / 4; var centerY = 2732 / 2; var dx = x - centerX; var dy = y - centerY; var length = Math.sqrt(dx * dx + dy * dy); if (length > 0) { dx /= length; dy /= length; } moveUp = dy < -0.5; moveDown = dy > 0.5; moveLeft = dx < -0.5; moveRight = dx > 0.5; } else { // Right side controls shooting isShooting = true; shootTarget.x = x; shootTarget.y = y; } }; game.up = function (x, y, obj) { // Stop movement or shooting based on which side was released if (x < 2048 / 2) { moveUp = moveDown = moveLeft = moveRight = false; } else { isShooting = false; } }; game.move = function (x, y, obj) { // Update shoot target if shooting if (isShooting && x > 2048 / 2) { shootTarget.x = x; shootTarget.y = y; } // Update movement direction if on left side if (x < 2048 / 2) { var centerX = 2048 / 4; var centerY = 2732 / 2; var dx = x - centerX; var dy = y - centerY; var length = Math.sqrt(dx * dx + dy * dy); if (length > 0) { dx /= length; dy /= length; } moveUp = dy < -0.5; moveDown = dy > 0.5; moveLeft = dx < -0.5; moveRight = dx > 0.5; } }; // Create the ground and UI createGround(); createUI(); // Main game update loop game.update = function () { if (gameActive) { // Handle player movement handlePlayerMovement(); // Handle player shooting if (isShooting && !player1.isDead) { var bullet = player1.shoot(shootTarget.x, shootTarget.y); if (bullet) { bullets.push(bullet); game.addChild(bullet); } } // Update players player1.update(); player2.update(); // Update health bars player1HealthBar.update(); player2HealthBar.update(); // Update ammo displays player1AmmoDisplay.update(); player2AmmoDisplay.update(); // Update bullets for (var i = bullets.length - 1; i >= 0; i--) { var bullet = bullets[i]; bullet.update(); // Check for bullet collisions with zombies for (var j = zombies.length - 1; j >= 0; j--) { var zombie = zombies[j]; if (!zombie.isDead && bullet.intersects(zombie)) { zombie.takeDamage(bullet.damage); bullet.shouldDestroy = true; break; } } // Remove bullets marked for destruction if (bullet.shouldDestroy) { game.removeChild(bullet); bullets.splice(i, 1); } } // Update zombies for (var i = zombies.length - 1; i >= 0; i--) { var zombie = zombies[i]; zombie.update(); // Remove zombies marked for destruction if (zombie.shouldDestroy) { game.removeChild(zombie); zombies.splice(i, 1); } } // Update blood splatters for (var i = bloodSplatters.length - 1; i >= 0; i--) { var blood = bloodSplatters[i]; blood.update(); // Remove blood marked for destruction if (blood.shouldDestroy) { game.removeChild(blood); bloodSplatters.splice(i, 1); } } // Spawn more zombies if needed if (zombies.length === 0 && zombiesLeft === 0) { // All zombies in wave defeated, start next wave startNextWave(); } else if (zombies.length < 10 && zombiesLeft > 0 && LK.ticks % 60 === 0) { // Spawn a new zombie every second if there are less than 10 on screen spawnZombie(); } // Check for game over checkGameOver(); } }; // Play music with low volume LK.playMusic('bgMusic', { volume: 0.3 });