/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); var storage = LK.import("@upit/storage.v1"); /**** * Classes ****/ var Food = Container.expand(function () { var self = Container.call(this); var graphics = self.attachAsset('food', { anchorX: 0.5, anchorY: 0.5 }); return self; }); var PowerUp = Container.expand(function (type) { var self = Container.call(this); self.type = type || 'speed'; var assetName = 'powerUpSpeed'; if (type === 'shield') assetName = 'powerUpShield';else if (type === 'multiplier') assetName = 'powerUpMultiplier';else if (type === 'shrink') assetName = 'powerUpShrink'; var graphics = self.attachAsset(assetName, { anchorX: 0.5, anchorY: 0.5 }); self.update = function () { self.rotation += 0.1; }; return self; }); var SnakeHead = Container.expand(function () { var self = Container.call(this); var graphics = self.attachAsset('snakeHead', { anchorX: 0.5, anchorY: 0.5 }); return self; }); var SnakeSegment = Container.expand(function () { var self = Container.call(this); var graphics = self.attachAsset('snakeSegment', { anchorX: 0.5, anchorY: 0.5 }); return self; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x001122 }); /**** * Game Code ****/ var GRID_SIZE = 40; var GAME_WIDTH = 2048; var GAME_HEIGHT = 2732; var COLS = Math.floor(GAME_WIDTH / GRID_SIZE); var ROWS = Math.floor(GAME_HEIGHT / GRID_SIZE); var snake = []; var direction = { x: 1, y: 0 }; var nextDirection = { x: 1, y: 0 }; var food = null; var powerUps = []; var gameSpeed = 150; var baseSpeed = 150; var lastMoveTime = 0; var score = 0; var highScore = storage.highScore || 0; var multiplier = 1; var shieldActive = false; var speedBoostActive = false; var powerUpTimers = {}; // UI Elements var scoreTxt = new Text2('Score: 0', { size: 60, fill: 0xFFFFFF }); scoreTxt.anchor.set(0, 0); scoreTxt.x = 120; scoreTxt.y = 50; LK.gui.topLeft.addChild(scoreTxt); var highScoreTxt = new Text2('Best: ' + highScore, { size: 40, fill: 0xCCCCCC }); highScoreTxt.anchor.set(0, 0); highScoreTxt.x = 120; highScoreTxt.y = 120; LK.gui.topLeft.addChild(highScoreTxt); var multiplierTxt = new Text2('', { size: 50, fill: 0xFFD700 }); multiplierTxt.anchor.set(0.5, 0); LK.gui.top.addChild(multiplierTxt); // Initialize snake function initializeSnake() { // Clear existing snake for (var i = 0; i < snake.length; i++) { if (snake[i]) { snake[i].destroy(); } } snake = []; // Create initial snake var startX = Math.floor(COLS / 2); var startY = Math.floor(ROWS / 2); for (var i = 0; i < 3; i++) { var segment; if (i === 0) { segment = new SnakeHead(); } else { segment = new SnakeSegment(); } segment.gridX = startX - i; segment.gridY = startY; segment.x = segment.gridX * GRID_SIZE + GRID_SIZE / 2; segment.y = segment.gridY * GRID_SIZE + GRID_SIZE / 2; snake.push(segment); game.addChild(segment); } } function spawnFood() { if (food) { food.destroy(); } var validPositions = []; for (var x = 0; x < COLS; x++) { for (var y = 0; y < ROWS; y++) { var occupied = false; for (var i = 0; i < snake.length; i++) { if (snake[i].gridX === x && snake[i].gridY === y) { occupied = true; break; } } if (!occupied) { validPositions.push({ x: x, y: y }); } } } if (validPositions.length > 0) { var pos = validPositions[Math.floor(Math.random() * validPositions.length)]; food = new Food(); food.gridX = pos.x; food.gridY = pos.y; food.x = pos.x * GRID_SIZE + GRID_SIZE / 2; food.y = pos.y * GRID_SIZE + GRID_SIZE / 2; game.addChild(food); } } function spawnPowerUp() { if (Math.random() < 0.3) { var types = ['speed', 'shield', 'multiplier', 'shrink']; var type = types[Math.floor(Math.random() * types.length)]; var validPositions = []; for (var x = 0; x < COLS; x++) { for (var y = 0; y < ROWS; y++) { var occupied = false; for (var i = 0; i < snake.length; i++) { if (snake[i].gridX === x && snake[i].gridY === y) { occupied = true; break; } } if (!occupied && !(food && food.gridX === x && food.gridY === y)) { validPositions.push({ x: x, y: y }); } } } if (validPositions.length > 0) { var pos = validPositions[Math.floor(Math.random() * validPositions.length)]; var powerUp = new PowerUp(type); powerUp.gridX = pos.x; powerUp.gridY = pos.y; powerUp.x = pos.x * GRID_SIZE + GRID_SIZE / 2; powerUp.y = pos.y * GRID_SIZE + GRID_SIZE / 2; powerUps.push(powerUp); game.addChild(powerUp); } } } function moveSnake() { direction = { x: nextDirection.x, y: nextDirection.y }; var head = snake[0]; var newX = head.gridX + direction.x; var newY = head.gridY + direction.y; // Check wall collision if (newX < 0 || newX >= COLS || newY < 0 || newY >= ROWS) { if (!shieldActive) { gameOver(); return; } } // Check self collision for (var i = 1; i < snake.length; i++) { if (snake[i].gridX === newX && snake[i].gridY === newY) { if (!shieldActive) { gameOver(); return; } } } // Wrap around if shield is active if (shieldActive) { if (newX < 0) newX = COLS - 1; if (newX >= COLS) newX = 0; if (newY < 0) newY = ROWS - 1; if (newY >= ROWS) newY = 0; } // Check food collision var ateFood = false; if (food && newX === food.gridX && newY === food.gridY) { ateFood = true; score += 10 * multiplier; updateScore(); LK.getSound('eat').play(); spawnFood(); spawnPowerUp(); } // Check power-up collision for (var p = powerUps.length - 1; p >= 0; p--) { var powerUp = powerUps[p]; if (powerUp.gridX === newX && powerUp.gridY === newY) { activatePowerUp(powerUp.type); powerUp.destroy(); powerUps.splice(p, 1); LK.getSound('powerup').play(); break; } } // Move snake if (!ateFood) { var tail = snake.pop(); tail.destroy(); } var newHead = new SnakeHead(); newHead.gridX = newX; newHead.gridY = newY; newHead.x = newX * GRID_SIZE + GRID_SIZE / 2; newHead.y = newY * GRID_SIZE + GRID_SIZE / 2; // Convert old head to body segment if (snake.length > 0) { var oldHead = snake[0]; oldHead.removeChildren(); oldHead.attachAsset('snakeSegment', { anchorX: 0.5, anchorY: 0.5 }); } snake.unshift(newHead); game.addChild(newHead); // Update speed based on score var speedLevel = Math.floor(score / 100); gameSpeed = Math.max(80, baseSpeed - speedLevel * 10); if (speedBoostActive) { gameSpeed = Math.floor(gameSpeed * 0.6); } } function activatePowerUp(type) { if (type === 'speed') { speedBoostActive = true; if (powerUpTimers.speed) { LK.clearTimeout(powerUpTimers.speed); } powerUpTimers.speed = LK.setTimeout(function () { speedBoostActive = false; }, 5000); } else if (type === 'shield') { shieldActive = true; snake[0].tint = 0xffd700; if (powerUpTimers.shield) { LK.clearTimeout(powerUpTimers.shield); } powerUpTimers.shield = LK.setTimeout(function () { shieldActive = false; snake[0].tint = 0xffffff; }, 3000); } else if (type === 'multiplier') { multiplier = 2; multiplierTxt.setText('x2 MULTIPLIER!'); if (powerUpTimers.multiplier) { LK.clearTimeout(powerUpTimers.multiplier); } powerUpTimers.multiplier = LK.setTimeout(function () { multiplier = 1; multiplierTxt.setText(''); }, 8000); } else if (type === 'shrink') { if (snake.length > 3) { var segmentsToRemove = Math.min(3, snake.length - 3); for (var i = 0; i < segmentsToRemove; i++) { var tail = snake.pop(); tail.destroy(); } } } } function updateScore() { scoreTxt.setText('Score: ' + score); if (score > highScore) { highScore = score; storage.highScore = highScore; highScoreTxt.setText('Best: ' + highScore); } } function gameOver() { LK.getSound('gameover').play(); LK.effects.flashScreen(0xff0000, 1000); LK.showGameOver(); } function getDirectionFromInput(inputX, inputY) { var headX = snake[0].x; var headY = snake[0].y; var deltaX = inputX - headX; var deltaY = inputY - headY; if (Math.abs(deltaX) > Math.abs(deltaY)) { return deltaX > 0 ? { x: 1, y: 0 } : { x: -1, y: 0 }; } else { return deltaY > 0 ? { x: 0, y: 1 } : { x: 0, y: -1 }; } } // Initialize game initializeSnake(); spawnFood(); // Input handling game.down = function (x, y, obj) { var newDir = getDirectionFromInput(x, y); // Prevent reverse direction if (newDir.x !== -direction.x || newDir.y !== -direction.y) { nextDirection = newDir; } }; // Game loop game.update = function () { var currentTime = Date.now(); if (currentTime - lastMoveTime >= gameSpeed) { moveSnake(); lastMoveTime = currentTime; } // Clean up old power-ups for (var i = powerUps.length - 1; i >= 0; i--) { // Remove power-ups after 10 seconds if (!powerUps[i].spawnTime) { powerUps[i].spawnTime = currentTime; } if (currentTime - powerUps[i].spawnTime > 10000) { powerUps[i].destroy(); powerUps.splice(i, 1); } } };