/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); /**** * Classes ****/ var Bullet = Container.expand(function () { var self = Container.call(this); var graphics = self.attachAsset('ammo', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 12; self.targetX = 0; self.targetY = 0; self.directionX = 0; self.directionY = 0; self.setTarget = function (targetX, targetY) { var dx = targetX - self.x; var dy = targetY - self.y; var distance = Math.sqrt(dx * dx + dy * dy); if (distance > 0) { self.directionX = dx / distance; self.directionY = dy / distance; } }; self.update = function () { self.x += self.directionX * self.speed; self.y += self.directionY * self.speed; }; return self; }); var Debris = Container.expand(function () { var self = Container.call(this); var graphics = self.attachAsset('debris', { anchorX: 0.5, anchorY: 0.5 }); return self; }); var Obstacle = Container.expand(function () { var self = Container.call(this); var graphics = self.attachAsset('obstacle', { anchorX: 0.5, anchorY: 0.5 }); return self; }); var Supply = Container.expand(function (type) { var self = Container.call(this); self.type = type; var assetName = type; var graphics = self.attachAsset(assetName, { anchorX: 0.5, anchorY: 0.5 }); self.value = type === 'medicine' ? 25 : type === 'food' ? 15 : 3; return self; }); var Survivor = Container.expand(function () { var self = Container.call(this); var graphics = self.attachAsset('survivor', { anchorX: 0.5, anchorY: 0.5 }); // Add weapon visual var weapon = self.attachAsset('ammo', { anchorX: 0.5, anchorY: 0.5, x: 20, y: -10, scaleX: 1.5, scaleY: 1.5 }); self.health = 100; self.ammoCount = 5; self.maxSpeed = 6; self.currentSpeed = 0; self.isMoving = false; self.detectionRadius = 180; self.takeDamage = function (damage) { self.health -= damage; if (self.health < 0) self.health = 0; LK.effects.flashObject(self, 0xff0000, 500); LK.getSound('damage').play(); }; self.heal = function (amount) { self.health += amount; if (self.health > 100) self.health = 100; LK.effects.flashObject(self, 0x00ff00, 300); }; self.addAmmo = function (amount) { self.ammoCount += amount; }; self.shoot = function () { if (self.ammoCount > 0) { self.ammoCount--; LK.getSound('shoot').play(); return true; } return false; }; return self; }); var Zombie = Container.expand(function () { var self = Container.call(this); var graphics = self.attachAsset('zombie', { anchorX: 0.5, anchorY: 0.5 }); self.speed = 1.5; self.detectionRadius = 150; self.isAlerted = false; self.targetX = self.x; self.targetY = self.y; self.patrolDistance = 225; self.originalX = 0; self.originalY = 0; self.patrolDirection = 1; self.alert = function () { if (!self.isAlerted) { self.isAlerted = true; self.speed = 3.75; tween(graphics, { tint: 0xff4444 }, { duration: 300 }); } }; self.update = function () { if (self.isAlerted) { // Chase player var dx = survivor.x - self.x; var dy = survivor.y - self.y; var distance = Math.sqrt(dx * dx + dy * dy); if (distance > 5) { self.x += dx / distance * self.speed; self.y += dy / distance * self.speed; } } else { // Patrol behavior var dx = self.targetX - self.x; var dy = self.targetY - self.y; var distance = Math.sqrt(dx * dx + dy * dy); if (distance < 10) { // Reached patrol point, set new target self.targetX = self.originalX + (Math.random() - 0.5) * self.patrolDistance; self.targetY = self.originalY + (Math.random() - 0.5) * self.patrolDistance; // Keep within bounds self.targetX = Math.max(100, Math.min(1948, self.targetX)); self.targetY = Math.max(300, Math.min(2432, self.targetY)); } else { self.x += dx / distance * self.speed; self.y += dy / distance * self.speed; } } }; return self; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x2d3748 }); /**** * Game Code ****/ // Game variables var survivor; var zombies = []; var supplies = []; var debris = []; var bullets = []; var obstacles = []; var dragNode = null; var gameTime = 0; var lastHealthDecrease = 0; var lastSupplySpawn = 0; var lastZombieSpawn = 0; var difficultyLevel = 1; // UI Elements var healthText = new Text2('Health: 100', { size: 60, fill: '#ff0000' }); healthText.anchor.set(0, 0); LK.gui.topLeft.addChild(healthText); healthText.x = 120; healthText.y = 20; var ammoText = new Text2('Ammo: 5', { size: 60, fill: '#ffff00' }); ammoText.anchor.set(0, 0); LK.gui.topLeft.addChild(ammoText); ammoText.x = 120; ammoText.y = 105; var scoreText = new Text2('Score: 0', { size: 75, fill: '#ffffff' }); scoreText.anchor.set(0.5, 0); LK.gui.top.addChild(scoreText); // Add dark overlay effect to background var darkOverlay = LK.getAsset('box', { width: 2048, height: 2732, color: 0x000000, alpha: 0.3, anchorX: 0, anchorY: 0, x: 0, y: 0 }); game.addChild(darkOverlay); // Initialize survivor survivor = game.addChild(new Survivor()); survivor.x = 1024; survivor.y = 2000; // Spawn initial debris for (var i = 0; i < 4; i++) { var debrisItem = game.addChild(new Debris()); debrisItem.x = 200 + Math.random() * 1648; debrisItem.y = 400 + Math.random() * 1800; debris.push(debrisItem); } // Spawn initial zombies for (var i = 0; i < 3; i++) { var zombie = game.addChild(new Zombie()); zombie.x = 300 + Math.random() * 1448; zombie.y = 300 + Math.random() * 1500; zombie.originalX = zombie.x; zombie.originalY = zombie.y; zombie.targetX = zombie.x; zombie.targetY = zombie.y; zombies.push(zombie); } // Spawn initial obstacles for (var i = 0; i < 3; i++) { var obstacle = game.addChild(new Obstacle()); obstacle.x = 300 + Math.random() * 1448; obstacle.y = 500 + Math.random() * 1500; obstacles.push(obstacle); } // Spawn initial supplies for (var i = 0; i < 5; i++) { spawnSupply(); } function spawnSupply() { var types = ['medicine', 'food', 'ammo']; var type = types[Math.floor(Math.random() * types.length)]; var supply = game.addChild(new Supply(type)); // Spawn away from debris and zombies var validPosition = false; var attempts = 0; while (!validPosition && attempts < 10) { supply.x = 100 + Math.random() * 1848; supply.y = 300 + Math.random() * 2132; validPosition = true; // Check distance from debris for (var j = 0; j < debris.length; j++) { var dist = Math.sqrt(Math.pow(supply.x - debris[j].x, 2) + Math.pow(supply.y - debris[j].y, 2)); if (dist < 120) { validPosition = false; break; } } attempts++; } supplies.push(supply); } function spawnZombie() { var zombie = game.addChild(new Zombie()); // Spawn at edges of screen var side = Math.floor(Math.random() * 4); if (side === 0) { // top zombie.x = Math.random() * 2048; zombie.y = 200; } else if (side === 1) { // right zombie.x = 1900; zombie.y = Math.random() * 2732; } else if (side === 2) { // bottom zombie.x = Math.random() * 2048; zombie.y = 2500; } else { // left zombie.x = 150; zombie.y = Math.random() * 2732; } zombie.originalX = zombie.x; zombie.originalY = zombie.y; zombie.targetX = zombie.x; zombie.targetY = zombie.y; zombies.push(zombie); } function updateUI() { healthText.setText('Health: ' + Math.floor(survivor.health)); ammoText.setText('Ammo: ' + survivor.ammoCount); scoreText.setText('Score: ' + LK.getScore()); } // Event handlers game.down = function (x, y, obj) { dragNode = survivor; // Initialize position tracking survivor.lastX = survivor.x; survivor.lastY = survivor.y; survivor.isMoving = true; // Shoot bullet towards clicked position if (survivor.shoot()) { var bullet = game.addChild(new Bullet()); bullet.x = survivor.x; bullet.y = survivor.y; bullet.setTarget(x, y); bullets.push(bullet); } }; game.up = function (x, y, obj) { dragNode = null; survivor.isMoving = false; }; game.move = function (x, y, obj) { if (dragNode) { // Store previous position before moving survivor.lastX = survivor.x; survivor.lastY = survivor.y; // Calculate desired position var targetX = Math.max(50, Math.min(1998, x)); var targetY = Math.max(300, Math.min(2682, y)); // Calculate direction and distance var dx = targetX - survivor.x; var dy = targetY - survivor.y; var distance = Math.sqrt(dx * dx + dy * dy); // Apply speed limit if (distance > 0) { var moveDistance = Math.min(distance, survivor.maxSpeed); survivor.x += dx / distance * moveDistance; survivor.y += dy / distance * moveDistance; } survivor.isMoving = true; } }; game.update = function () { gameTime += 16; // Approximately 16ms per frame at 60fps // Health decreases over time if (gameTime - lastHealthDecrease > 3000) { // Every 3 seconds survivor.health -= 2; lastHealthDecrease = gameTime; } // Check game over if (survivor.health <= 0) { LK.showGameOver(); return; } // Spawn supplies if (gameTime - lastSupplySpawn > 8000) { // Every 8 seconds spawnSupply(); lastSupplySpawn = gameTime; } // Spawn zombies (increasing difficulty) difficultyLevel = Math.floor(gameTime / 30000) + 1; // Increase difficulty every 30 seconds var zombieSpawnRate = Math.max(5000 - difficultyLevel * 500, 2000); // Faster spawning over time if (gameTime - lastZombieSpawn > zombieSpawnRate) { spawnZombie(); lastZombieSpawn = gameTime; } // Check zombie detection for (var i = 0; i < zombies.length; i++) { var zombie = zombies[i]; var dist = Math.sqrt(Math.pow(survivor.x - zombie.x, 2) + Math.pow(survivor.y - zombie.y, 2)); if (dist < zombie.detectionRadius) { if (survivor.isMoving) { // Fast movement alerts zombies zombie.alert(); } else if (dist < 90) { // Very close detection even when stationary zombie.alert(); } } // Check collision with survivor if (survivor.intersects(zombie)) { survivor.takeDamage(10); } } // Check supply collection for (var i = supplies.length - 1; i >= 0; i--) { var supply = supplies[i]; if (survivor.intersects(supply)) { LK.getSound('collect').play(); if (supply.type === 'medicine') { survivor.heal(supply.value); LK.setScore(LK.getScore() + 20); } else if (supply.type === 'food') { survivor.heal(supply.value); LK.setScore(LK.getScore() + 15); } else if (supply.type === 'ammo') { survivor.addAmmo(supply.value); LK.setScore(LK.getScore() + 10); } supply.destroy(); supplies.splice(i, 1); } } // Update bullets for (var i = bullets.length - 1; i >= 0; i--) { var bullet = bullets[i]; // Remove bullets that go off screen if (bullet.x < -50 || bullet.x > 2098 || bullet.y < -50 || bullet.y > 2782) { bullet.destroy(); bullets.splice(i, 1); continue; } // Check bullet collision with obstacles var hitObstacle = false; for (var j = 0; j < obstacles.length; j++) { if (bullet.intersects(obstacles[j])) { hitObstacle = true; break; } } if (hitObstacle) { bullet.destroy(); bullets.splice(i, 1); continue; } // Check bullet collision with zombies var hitZombie = false; for (var j = 0; j < zombies.length; j++) { var zombie = zombies[j]; if (bullet.intersects(zombie)) { // Remove zombie zombie.destroy(); zombies.splice(j, 1); LK.setScore(LK.getScore() + 50); hitZombie = true; break; } } if (hitZombie) { bullet.destroy(); bullets.splice(i, 1); continue; } } // Check survivor collision with obstacles for movement blocking for (var i = 0; i < obstacles.length; i++) { if (survivor.intersects(obstacles[i])) { // Store previous position to prevent passing through obstacles if (survivor.lastX === undefined) survivor.lastX = survivor.x; if (survivor.lastY === undefined) survivor.lastY = survivor.y; // Revert to last valid position survivor.x = survivor.lastX; survivor.y = survivor.lastY; break; } } // Add score for survival time if (LK.ticks % 60 === 0) { // Every second LK.setScore(LK.getScore() + 1); } updateUI(); };