This is a simple and fun Snake game built using HTML, CSS, and JavaScript. It features a classic gameplay experience with added options for different difficulty levels and high score tracking.
Start the Game: When you load the game, you will be prompted to select a difficulty level: Easy, Medium, or Hard.
Control the Snake: Use the arrow keys on your keyboard to control the snake's direction:
- Arrow Up: Move Up
- Arrow Down: Move Down
- Arrow Right: Move Right
- Arrow Left: Move Left
Objective: Eat the red food squares to grow the snake and increase your score.
Avoid Collisions: The game ends if the snake collides with the borders of the play area or with its own body.
Game Over: When the game is over, a modal will display your score and provide an option to replay the game.
- Difficulty Levels: Choose from Easy, Medium, and Hard, which affect the speed of the snake.
- High Score Tracking: Your highest score is saved using local storage and displayed during gameplay.
- Responsive Design: The game scales and adapts to different screen sizes for a consistent experience.
- index.html: Contains the HTML structure for the game.
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Snake Game</title> <link rel="stylesheet" href="style.css"> <script src="script.js" defer></script> </head> <body> <div class="wrapper"> <div class="game-details"> <span class="score">Score: 0</span> <span class="highscore">High Score: 0</span> </div> <div class="play-board"></div> </div> <!-- Game Over Modal --> <div class="game-over-modal" id="gameOverModal"> <div class="game-over-content"> <h2>Game Over!</h2> <p>Your Score: <span id="finalScore">0</span></p> <button onclick="restartGame()">Replay</button> </div> </div> <!-- Difficulty Selection Modal --> <div class="difficulty-modal" id="difficultyModal"> <div class="difficulty-content"> <h2>Select Difficulty</h2> <button onclick="startGame('easy')">Easy</button> <button onclick="startGame('medium')">Medium</button> <button onclick="startGame('hard')">Hard</button> </div> </div> </body> </html> - style.css: Provides the styles and layout for the game interface.
@import url('https://fonts.googleapis.com/css2?family=Open+Sans:wght@400;500;600;700&display=swap'); * { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Open Sans', sans-serif; } body { display: flex; align-items: center; justify-content: center; min-height: 100vh; background-color: #E3F2FD; } .wrapper { width: 65vmin; height: 70vmin; display: flex; flex-direction: column; border-radius: 5px; background-color: #193447; } .game-details { color: #B8C6DC; font-size: 1.2rem; font-weight: 500; padding: 20px 27px; display: flex; justify-content: space-between; } .play-board { width: 100%; height: 100%; display: grid; grid-template-rows: repeat(30, 1fr); grid-template-columns: repeat(30, 1fr); background-color: #212837; } .play-board .food { background-color: #ff003d; } .play-board .head { background-color: #B8C6DC; } .play-board .body { background-color: #4CAF50; /* Added color for body segments */ } /* Game Over Modal Styles */ .game-over-modal { display: none; /* Hidden by default */ position: fixed; z-index: 1; left: 0; top: 0; width: 100%; height: 100%; overflow: auto; background-color: rgb(0,0,0); background-color: rgba(0,0,0,0.4); align-items: center; justify-content: center; } .game-over-content { background-color: #fefefe; margin: auto; padding: 20px; border: 1px solid #888; width: 80%; max-width: 300px; text-align: center; border-radius: 10px; } .game-over-content h2 { font-size: 2rem; margin-bottom: 1rem; } .game-over-content p { font-size: 1.2rem; margin-bottom: 1.5rem; } .game-over-content button { padding: 10px 20px; font-size: 1rem; background-color: #4CAF50; color: white; border: none; border-radius: 5px; cursor: pointer; } .game-over-content button:hover { background-color: #45a049; } /* Difficulty Selection Modal Styles */ .difficulty-modal { display: flex; /* Show by default for initial selection */ position: fixed; z-index: 1; left: 0; top: 0; width: 100%; height: 100%; overflow: auto; background-color: rgb(0,0,0); background-color: rgba(0,0,0,0.4); align-items: center; justify-content: center; } .difficulty-content { background-color: #fefefe; margin: auto; padding: 20px; border: 1px solid #888; width: 80%; max-width: 300px; text-align: center; border-radius: 10px; } .difficulty-content h2 { font-size: 2rem; margin-bottom: 1rem; } .difficulty-content button { padding: 10px 20px; font-size: 1rem; margin: 5px; background-color: #4CAF50; color: white; border: none; border-radius: 5px; cursor: pointer; } .difficulty-content button:hover { background-color: #45a049; } - script.js: Implements the game logic, including snake movement, collision detection, and scoring.
const playBoard = document.querySelector(".play-board"); let foodX, foodY; let snakeX = 5, snakeY = 10; let snakeBody = []; let velocityX = 0, velocityY = 0; let score = 0; let highScore = localStorage.getItem("highScore") || 0; let gameInterval; let GameOver = false; let gameSpeed = 125; // Default game speed // Function to change the food position to a random location const changeFoodPosition = () => { foodX = Math.floor(Math.random() * 30) + 1; foodY = Math.floor(Math.random() * 30) + 1; } // Function to change the direction of the snake based on arrow keys const changeDirection = (e) => { // Prevent the snake from reversing direction if (e.key === "ArrowUp" && velocityY !== 1) { velocityX = 0; velocityY = -1; } else if (e.key === "ArrowDown" && velocityY !== -1) { velocityX = 0; velocityY = 1; } else if (e.key === "ArrowRight" && velocityX !== -1) { velocityX = 1; velocityY = 0; } else if (e.key === "ArrowLeft" && velocityX !== 1) { velocityX = -1; velocityY = 0; } } // Function to display game over message and stop the game const gameOver = () => { clearInterval(gameInterval); GameOver = true; document.getElementById("finalScore").textContent = score; document.getElementById("gameOverModal").style.display = "flex"; } // Function to restart the game const restartGame = () => { // Reset game state snakeX = 5; snakeY = 10; snakeBody = []; velocityX = 0; velocityY = 0; score = 0; GameOver = false; // Update the score display document.querySelector(".score").textContent = `Score: ${score}`; document.querySelector(".highscore").textContent = `High Score: ${highScore}`; // Hide the game over modal document.getElementById("gameOverModal").style.display = "none"; // Show difficulty selection modal document.getElementById("difficultyModal").style.display = "flex"; } // Function to start the game based on selected difficulty const startGame = (difficulty) => { switch (difficulty) { case 'easy': gameSpeed = 200; // Slower speed for easy break; case 'medium': gameSpeed = 125; // Medium speed break; case 'hard': gameSpeed = 75; // Faster speed for hard break; } // Hide the difficulty modal document.getElementById("difficultyModal").style.display = "none"; // Initialize the food position changeFoodPosition(); // Start the game with the selected speed gameInterval = setInterval(initGame, gameSpeed); } // Main function to update the game state const initGame = () => { // Save the current tail position let tailX = snakeBody.length ? snakeBody[snakeBody.length - 1][0] : snakeX; let tailY = snakeBody.length ? snakeBody[snakeBody.length - 1][1] : snakeY; // Update snake's head position based on current velocity snakeX += velocityX; snakeY += velocityY; // Check for border collision (game over condition) if (snakeX < 1 || snakeX > 30 || snakeY < 1 || snakeY > 30) { gameOver(); return; } // Check for self-collision (game over condition) for (let i = 0; i < snakeBody.length; i++) { if (snakeX === snakeBody[i][0] && snakeY === snakeBody[i][1]) { gameOver(); return; } } // Check if the snake has reached the food if (snakeX === foodX && snakeY === foodY) { changeFoodPosition(); // Move the food to a new position // Add a new segment to the snake's body at the tail's previous position snakeBody.push([tailX, tailY]); score++; if (score > highScore) { highScore = score; localStorage.setItem("highScore", highScore); } document.querySelector(".score").textContent = `Score: ${score}`; document.querySelector(".highscore").textContent = `High Score: ${highScore}`; } // Move each part of the snake's body to follow the segment in front of it for (let i = snakeBody.length - 1; i > 0; i--) { snakeBody[i] = snakeBody[i - 1]; } // Update the first segment of the snake's body to the previous head position if (snakeBody.length > 0) { snakeBody[0] = [snakeX - velocityX, snakeY - velocityY]; } // Render the food and the snake's head on the grid let htmlMarkup = `<div class="food" style='grid-area: ${foodY} / ${foodX}'></div>`; htmlMarkup += `<div class="head" style='grid-area: ${snakeY} / ${snakeX}'></div>`; // Render the snake's body on the grid for (let i = 0; i < snakeBody.length; i++) { htmlMarkup += `<div class="body" style='grid-area: ${snakeBody[i][1]} / ${snakeBody[i][0]}'></div>`; } // Update the play board with the new positions playBoard.innerHTML = htmlMarkup; } // Show the difficulty selection modal on page load document.getElementById("difficultyModal").style.display = "flex"; // Add event listener for keypress to change the snake's direction document.addEventListener('keydown', changeDirection);