/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); var storage = LK.import("@upit/storage.v1", { highScore: 0 }); /**** * Classes ****/ 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.angle = 0; self.lifespan = 60; // Frames bullet stays alive self.init = function (x, y, angle, speed) { self.x = x; self.y = y; self.angle = angle; self.speed = speed || self.speed; return self; }; self.update = function () { // Move bullet self.x += Math.cos(self.angle) * self.speed; self.y += Math.sin(self.angle) * self.speed; // Check if bullet is out of bounds if (self.x < -100 || self.x > 2148 || self.y < -100 || self.y > 2832) { self.destroy(); var index = bullets.indexOf(self); if (index !== -1) { bullets.splice(index, 1); } return; } // Reduce lifespan self.lifespan--; if (self.lifespan <= 0) { self.destroy(); var index = bullets.indexOf(self); if (index !== -1) { bullets.splice(index, 1); } } }; return self; }); var Hero = Container.expand(function () { var self = Container.call(this); var heroGraphics = self.attachAsset('hero', { anchorX: 0.5, anchorY: 0.5 }); self.health = 100; self.maxHealth = 100; self.speed = 5; self.maxSpeed = 10; self.ammo = 30; self.maxAmmo = 30; self.fireRate = 10; // Frames between shots self.fireTimer = 0; self.fireDelay = 0; self.invulnerable = false; self.weaponType = "pistol"; // pistol, shotgun, machineGun self.update = function () { // Handle fire rate cooldown if (self.fireTimer > 0) { self.fireTimer--; } // Handle invulnerability frames if (self.invulnerable) { heroGraphics.alpha = Math.sin(LK.ticks * 0.5) * 0.5 + 0.5; } else { heroGraphics.alpha = 1; } // Always face mouse/touch position if (lastTouchPosition) { var dx = lastTouchPosition.x - self.x; var dy = lastTouchPosition.y - self.y; self.rotation = Math.atan2(dy, dx); } }; self.takeDamage = function (amount) { if (self.invulnerable) { return; } self.health -= amount; LK.getSound('playerHurt').play(); // Flash red when hit LK.effects.flashObject(self, 0xff0000, 500); // Make invulnerable briefly self.invulnerable = true; LK.setTimeout(function () { self.invulnerable = false; }, 1000); // Update health display updateHealthDisplay(); if (self.health <= 0) { gameOver(); } }; self.shoot = function () { if (self.fireTimer > 0 || self.ammo <= 0) { return; } self.fireTimer = self.fireRate; // Create muzzle flash effect var flash = LK.getAsset('muzzleFlash', { anchorX: 0.5, anchorY: 0.5 }); flash.x = self.x + Math.cos(self.rotation) * 70; flash.y = self.y + Math.sin(self.rotation) * 70; game.addChild(flash); // Fade out and remove muzzle flash tween(flash, { alpha: 0, scaleX: 2, scaleY: 2 }, { duration: 200, onFinish: function onFinish() { flash.destroy(); } }); // Play sound LK.getSound('shoot').play(); // Reduce ammo self.ammo--; updateAmmoDisplay(); // Create bullet(s) based on weapon type if (self.weaponType === "pistol") { createBullet(self.x, self.y, self.rotation, 15); } else if (self.weaponType === "shotgun") { for (var i = 0; i < 5; i++) { var spreadAngle = self.rotation + (Math.random() - 0.5) * 0.5; createBullet(self.x, self.y, spreadAngle, 12 + Math.random() * 5); } } else if (self.weaponType === "machineGun") { self.fireRate = 5; createBullet(self.x, self.y, self.rotation + (Math.random() - 0.5) * 0.1, 15); } }; self.reload = function () { if (self.ammo < self.maxAmmo) { LK.getSound('reload').play(); self.ammo = self.maxAmmo; updateAmmoDisplay(); } }; return self; }); var Powerup = Container.expand(function () { var self = Container.call(this); var powerupGraphics; self.type = "health"; // health, ammo, speed, weapon self.lifespan = 300; // 5 seconds self.init = function (x, y, type) { self.x = x; self.y = y; self.type = type || self.type; if (self.type === "health") { powerupGraphics = self.attachAsset('healthPack', { anchorX: 0.5, anchorY: 0.5 }); } else if (self.type === "ammo") { powerupGraphics = self.attachAsset('ammoBox', { anchorX: 0.5, anchorY: 0.5 }); } else if (self.type === "speed") { powerupGraphics = self.attachAsset('speedBoost', { anchorX: 0.5, anchorY: 0.5 }); } return self; }; self.update = function () { // Make powerup pulse powerupGraphics.scaleX = 1 + Math.sin(LK.ticks * 0.1) * 0.1; powerupGraphics.scaleY = 1 + Math.sin(LK.ticks * 0.1) * 0.1; // Reduce lifespan self.lifespan--; if (self.lifespan <= 0) { self.fadeOut(); } // Flash when about to disappear if (self.lifespan < 60) { powerupGraphics.alpha = Math.sin(LK.ticks * 0.5) * 0.5 + 0.5; } }; self.applyEffect = function () { LK.getSound('powerup').play(); if (self.type === "health") { hero.health = Math.min(hero.health + 50, hero.maxHealth); updateHealthDisplay(); } else if (self.type === "ammo") { hero.reload(); } else if (self.type === "speed") { var originalSpeed = hero.speed; hero.speed = hero.maxSpeed; LK.setTimeout(function () { hero.speed = originalSpeed; }, 5000); } self.fadeOut(); }; self.fadeOut = function () { // Remove from powerups array var index = powerups.indexOf(self); if (index !== -1) { powerups.splice(index, 1); } // Fade out and destroy tween(self, { alpha: 0, scaleX: 0.5, scaleY: 0.5 }, { duration: 300, onFinish: function onFinish() { self.destroy(); } }); }; return self; }); var Zombie = Container.expand(function () { var self = Container.call(this); var zombieGraphics = self.attachAsset('zombie', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 1 + Math.random() * 2; self.health = 100; self.damage = 10; self.type = "normal"; // normal, fast, tank self.attackCooldown = 0; // Initialize zombie type self.setType = function (type) { self.type = type; if (type === "fast") { self.speed = 3 + Math.random() * 2; self.health = 50; self.damage = 5; zombieGraphics.tint = 0x88ff88; zombieGraphics.scaleX = 0.8; zombieGraphics.scaleY = 0.8; } else if (type === "tank") { self.speed = 0.7 + Math.random(); self.health = 200; self.damage = 20; zombieGraphics.tint = 0x225522; zombieGraphics.scaleX = 1.3; zombieGraphics.scaleY = 1.3; } return self; }; self.update = function () { if (!hero) { return; } // Move toward player var dx = hero.x - self.x; var dy = hero.y - self.y; var distance = Math.sqrt(dx * dx + dy * dy); if (distance > 10) { var angle = Math.atan2(dy, dx); self.x += Math.cos(angle) * self.speed; self.y += Math.sin(angle) * self.speed; self.rotation = angle; } // Attack cooldown if (self.attackCooldown > 0) { self.attackCooldown--; } }; self.takeDamage = function (amount) { self.health -= amount; // Flash white when hit LK.effects.flashObject(self, 0xffffff, 100); if (self.health <= 0) { self.die(); } }; self.die = function () { // Spawn blood splatter var blood = LK.getAsset('blood', { anchorX: 0.5, anchorY: 0.5, x: self.x, y: self.y, alpha: 0.8 }); game.addChild(blood); // Make blood stay for a while then fade out LK.setTimeout(function () { tween(blood, { alpha: 0 }, { duration: 2000, onFinish: function onFinish() { blood.destroy(); } }); }, 5000); // Play death sound LK.getSound('zombieDeath').play(); // Add to score var scoreValue = self.type === "normal" ? 10 : self.type === "fast" ? 15 : self.type === "tank" ? 25 : 10; LK.setScore(LK.getScore() + scoreValue); updateScoreDisplay(); // Sometimes drop a powerup (20% chance) if (Math.random() < 0.2) { spawnPowerup(self.x, self.y); } // Remove from active zombies array var index = zombies.indexOf(self); if (index !== -1) { zombies.splice(index, 1); } // Destroy the zombie self.destroy(); }; self.attack = function () { if (self.attackCooldown <= 0) { hero.takeDamage(self.damage); self.attackCooldown = 60; // 1 second cooldown } }; return self; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x222222 }); /**** * Game Code ****/ // Game variables var hero; var zombies = []; var bullets = []; var powerups = []; var waveNumber = 1; var zombiesPerWave = 5; var waveDelay = 5000; // 5 seconds between waves var lastTouchPosition = null; var isShooting = false; var gameActive = true; // UI Elements var healthBar; var healthText; var ammoText; var waveText; var scoreText; // Initialize game function initGame() { // Reset game state zombies = []; bullets = []; powerups = []; waveNumber = 1; gameActive = true; LK.setScore(0); // Play background music LK.playMusic('bgMusic', { loop: true }); // Create hero hero = new Hero(); hero.x = 2048 / 2; hero.y = 2732 / 2; game.addChild(hero); // Create UI createUI(); // Start first wave startWave(); } function createUI() { // Health bar background var healthBarBg = LK.getAsset('bullet', { anchorX: 0, anchorY: 0.5, width: 300, height: 30, tint: 0x333333 }); // Health bar foreground healthBar = LK.getAsset('bullet', { anchorX: 0, anchorY: 0.5, width: 300, height: 30, tint: 0xFF0000 }); // Health text healthText = new Text2('Health: 100/100', { size: 30, fill: 0xFFFFFF }); healthText.anchor.set(0, 0.5); // Ammo text ammoText = new Text2('Ammo: 30/30', { size: 30, fill: 0xFFFFFF }); ammoText.anchor.set(0, 0.5); // Wave text waveText = new Text2('Wave: 1', { size: 30, fill: 0xFFFFFF }); waveText.anchor.set(0.5, 0); // Score text scoreText = new Text2('Score: 0', { size: 50, fill: 0xFFFFFF }); scoreText.anchor.set(0.5, 0); // Add UI elements to GUI LK.gui.bottomLeft.addChild(healthBarBg); LK.gui.bottomLeft.addChild(healthBar); LK.gui.bottomLeft.addChild(healthText); LK.gui.bottomRight.addChild(ammoText); LK.gui.top.addChild(waveText); LK.gui.top.addChild(scoreText); // Position UI elements healthBarBg.x = 20; healthBarBg.y = -50; healthBar.x = 20; healthBar.y = -50; healthText.x = 20; healthText.y = -50; ammoText.x = -20; ammoText.y = -50; waveText.y = 20; scoreText.y = 80; // Update UI updateHealthDisplay(); updateAmmoDisplay(); updateWaveDisplay(); updateScoreDisplay(); } function updateHealthDisplay() { if (!hero || !healthBar || !healthText) { return; } var healthPercent = hero.health / hero.maxHealth; healthBar.width = 300 * healthPercent; healthText.setText('Health: ' + hero.health + '/' + hero.maxHealth); // Change color based on health if (healthPercent > 0.6) { healthBar.tint = 0x00FF00; } else if (healthPercent > 0.3) { healthBar.tint = 0xFFFF00; } else { healthBar.tint = 0xFF0000; } } function updateAmmoDisplay() { if (!hero || !ammoText) { return; } ammoText.setText('Ammo: ' + hero.ammo + '/' + hero.maxAmmo); } function updateWaveDisplay() { if (!waveText) { return; } waveText.setText('Wave: ' + waveNumber); } function updateScoreDisplay() { if (!scoreText) { return; } scoreText.setText('Score: ' + LK.getScore()); } function startWave() { // Update UI updateWaveDisplay(); // Spawn zombies for this wave var zombiesToSpawn = zombiesPerWave + Math.floor(waveNumber * 1.5); var tankChance = Math.min(0.1 + waveNumber * 0.02, 0.3); var fastChance = Math.min(0.2 + waveNumber * 0.03, 0.4); for (var i = 0; i < zombiesToSpawn; i++) { LK.setTimeout(function () { spawnZombie(tankChance, fastChance); }, i * 500); // Stagger zombie spawns } // Schedule next wave LK.setTimeout(function () { if (gameActive) { waveNumber++; startWave(); } }, waveDelay + zombiesToSpawn * 500); } function spawnZombie(tankChance, fastChance) { // Determine spawn position (outside the screen) var edge = Math.floor(Math.random() * 4); // 0=top, 1=right, 2=bottom, 3=left var x, y; switch (edge) { 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; } // Create zombie var zombie = new Zombie(); zombie.x = x; zombie.y = y; // Determine zombie type var type = "normal"; if (Math.random() < tankChance) { type = "tank"; } else if (Math.random() < fastChance) { type = "fast"; } zombie.setType(type); zombies.push(zombie); game.addChild(zombie); } function createBullet(x, y, angle, speed) { var bullet = new Bullet().init(x, y, angle, speed); bullets.push(bullet); game.addChild(bullet); // Offset bullet position to start at gun muzzle bullet.x += Math.cos(angle) * 70; bullet.y += Math.sin(angle) * 70; } function spawnPowerup(x, y) { // Determine powerup type var types = ["health", "ammo", "speed"]; var type = types[Math.floor(Math.random() * types.length)]; var powerup = new Powerup().init(x, y, type); powerups.push(powerup); game.addChild(powerup); } function gameOver() { gameActive = false; // Save high score if (LK.getScore() > storage.highScore) { storage.highScore = LK.getScore(); } // Show game over screen LK.effects.flashScreen(0xFF0000, 1000); LK.setTimeout(function () { LK.showGameOver(); }, 1000); } // Input handling game.down = function (x, y, obj) { lastTouchPosition = { x: x, y: y }; isShooting = true; }; game.up = function (x, y, obj) { isShooting = false; }; game.move = function (x, y, obj) { lastTouchPosition = { x: x, y: y }; }; // Main game update loop game.update = function () { if (!gameActive) { return; } // Handle player shooting if (isShooting && hero) { hero.shoot(); } // Update all game entities if (hero) { hero.update(); } // Update zombies for (var i = zombies.length - 1; i >= 0; i--) { zombies[i].update(); // Check for collision with hero if (hero && zombies[i].intersects(hero)) { zombies[i].attack(); } } // Update bullets for (var j = bullets.length - 1; j >= 0; j--) { bullets[j].update(); // Check for collision with zombies for (var k = zombies.length - 1; k >= 0; k--) { if (bullets[j] && zombies[k] && bullets[j].intersects(zombies[k])) { zombies[k].takeDamage(bullets[j].damage); // Remove bullet bullets[j].destroy(); bullets.splice(j, 1); break; } } } // Update powerups for (var l = powerups.length - 1; l >= 0; l--) { powerups[l].update(); // Check for collision with hero if (hero && powerups[l].intersects(hero)) { powerups[l].applyEffect(); } } // Auto reload when empty if (hero && hero.ammo === 0) { hero.reload(); } }; // Initialize the game initGame();