/**** * Plugins ****/ var tween = LK.import("@upit/tween.v1"); /**** * Classes ****/ var Food = Container.expand(function () { var self = Container.call(this); var foodGraphics = self.attachAsset('food', { anchorX: 0.5, anchorY: 0.5 }); return self; }); var GridBorder = Container.expand(function () { var self = Container.call(this); var borderGraphics = self.attachAsset('gridBorder', { anchorX: 0.5, anchorY: 0.5 }); return self; }); var SnakeHead = Container.expand(function () { var self = Container.call(this); var headGraphics = self.attachAsset('snakeHead', { anchorX: 0.5, anchorY: 0.5 }); return self; }); var SnakeTail = Container.expand(function () { var self = Container.call(this); var tailGraphics = self.attachAsset('snakeTail', { anchorX: 0.5, anchorY: 0.5 }); return self; }); /**** * Initialize Game ****/ var game = new LK.Game({ backgroundColor: 0x2d5016 }); /**** * Game Code ****/ // Grid configuration var gridSize = 40; var gridWidth = 20; var gridHeight = 25; var gameAreaWidth = gridWidth * gridSize; var gameAreaHeight = gridHeight * gridSize; var offsetX = (2048 - gameAreaWidth) / 2; var offsetY = (2732 - gameAreaHeight) / 2 - 200; // Snake variables var snake = []; var direction = { x: 1, y: 0 }; var nextDirection = { x: 1, y: 0 }; var food = null; var gameRunning = false; var moveTimer = 0; var moveInterval = 200; // Create border walls var borders = []; for (var x = -1; x <= gridWidth; x++) { for (var y = -1; y <= gridHeight; y++) { if (x === -1 || x === gridWidth || y === -1 || y === gridHeight) { var border = new GridBorder(); border.x = offsetX + x * gridSize + gridSize / 2; border.y = offsetY + y * gridSize + gridSize / 2; borders.push(border); game.addChild(border); } } } // Create score display var scoreTxt = new Text2('Score: 0', { size: 80, fill: 0xFFFFFF }); scoreTxt.anchor.set(0.5, 0); LK.gui.top.addChild(scoreTxt); scoreTxt.y = 50; // Initialize snake function initializeSnake() { // Clear existing snake for (var i = 0; i < snake.length; i++) { snake[i].destroy(); } snake = []; // Create snake head at center var head = new SnakeHead(); head.gridX = Math.floor(gridWidth / 2); head.gridY = Math.floor(gridHeight / 2); head.x = offsetX + head.gridX * gridSize + gridSize / 2; head.y = offsetY + head.gridY * gridSize + gridSize / 2; snake.push(head); game.addChild(head); // Add initial tail segments for (var i = 1; i < 3; i++) { var tail = new SnakeTail(); tail.gridX = head.gridX - i; tail.gridY = head.gridY; tail.x = offsetX + tail.gridX * gridSize + gridSize / 2; tail.y = offsetY + tail.gridY * gridSize + gridSize / 2; snake.push(tail); game.addChild(tail); } direction = { x: 1, y: 0 }; nextDirection = { x: 1, y: 0 }; gameRunning = true; LK.setScore(0); scoreTxt.setText('Score: 0'); spawnFood(); } function spawnFood() { if (food) { food.destroy(); } var validPositions = []; for (var x = 0; x < gridWidth; x++) { for (var y = 0; y < gridHeight; 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 randomPos = validPositions[Math.floor(Math.random() * validPositions.length)]; food = new Food(); food.gridX = randomPos.x; food.gridY = randomPos.y; food.x = offsetX + food.gridX * gridSize + gridSize / 2; food.y = offsetY + food.gridY * gridSize + gridSize / 2; game.addChild(food); } } function moveSnake() { if (!gameRunning) return; direction = nextDirection; var head = snake[0]; var newX = head.gridX + direction.x; var newY = head.gridY + direction.y; // Check border collision if (newX < 0 || newX >= gridWidth || newY < 0 || newY >= gridHeight) { gameOver(); return; } // Check tail collision for (var i = 1; i < snake.length; i++) { if (snake[i].gridX === newX && snake[i].gridY === newY) { gameOver(); return; } } // Check food collision var ateFood = false; if (food && food.gridX === newX && food.gridY === newY) { ateFood = true; LK.setScore(LK.getScore() + 1); scoreTxt.setText('Score: ' + LK.getScore()); LK.getSound('eat').play(); // Add new tail segment at current tail position var lastTail = snake[snake.length - 1]; var newTail = new SnakeTail(); newTail.gridX = lastTail.gridX; newTail.gridY = lastTail.gridY; newTail.x = offsetX + newTail.gridX * gridSize + gridSize / 2; newTail.y = offsetY + newTail.gridY * gridSize + gridSize / 2; snake.push(newTail); game.addChild(newTail); spawnFood(); } // Move snake body for (var i = snake.length - 1; i > 0; i--) { snake[i].gridX = snake[i - 1].gridX; snake[i].gridY = snake[i - 1].gridY; var bodyNewX = offsetX + snake[i].gridX * gridSize + gridSize / 2; var bodyNewY = offsetY + snake[i].gridY * gridSize + gridSize / 2; tween(snake[i], { x: bodyNewX, y: bodyNewY }, { duration: 100, easing: tween.easeOut }); } // Move head head.gridX = newX; head.gridY = newY; var headNewX = offsetX + head.gridX * gridSize + gridSize / 2; var headNewY = offsetY + head.gridY * gridSize + gridSize / 2; tween(head, { x: headNewX, y: headNewY }, { duration: 100, easing: tween.easeOut }); } function gameOver() { gameRunning = false; LK.getSound('gameOver').play(); LK.effects.flashScreen(0xff0000, 500); LK.setTimeout(function () { LK.showGameOver(initializeSnake); }, 500); } // Touch controls var startTouchX = 0; var startTouchY = 0; var touchStarted = false; game.down = function (x, y, obj) { if (!gameRunning) return; startTouchX = x; startTouchY = y; touchStarted = true; }; game.up = function (x, y, obj) { if (!gameRunning || !touchStarted) return; touchStarted = false; var deltaX = x - startTouchX; var deltaY = y - startTouchY; var minSwipeDistance = 50; if (Math.abs(deltaX) > Math.abs(deltaY)) { // Horizontal swipe if (Math.abs(deltaX) > minSwipeDistance) { if (deltaX > 0 && direction.x !== -1) { nextDirection = { x: 1, y: 0 }; // Right } else if (deltaX < 0 && direction.x !== 1) { nextDirection = { x: -1, y: 0 }; // Left } } } else { // Vertical swipe if (Math.abs(deltaY) > minSwipeDistance) { if (deltaY > 0 && direction.y !== -1) { nextDirection = { x: 0, y: 1 }; // Down } else if (deltaY < 0 && direction.y !== 1) { nextDirection = { x: 0, y: -1 }; // Up } } } }; // Game update loop with automatic movement game.update = function () { if (!gameRunning) return; moveTimer += 16.67; // Approximate milliseconds per frame at 60 FPS if (moveTimer >= moveInterval) { moveTimer = 0; moveSnake(); } }; // Initialize the game initializeSnake();