Example Game Development: Snake

In this example you can play the classic Snake game, which I have rebuilt from scratch using HTML5 Canvas and JavaScript. The game demonstrates various programming concepts such as canvas animation, event handling (keyboard and touch), game loop management, and AJAX for saving high scores.

Technical Features

• Canvas-based graphics: The game uses HTML5 Canvas for smooth 2D rendering
• Responsive design: Works on both desktop and mobile devices
• Touch controls: Swipe gestures for mobile devices
• Dark mode support: Automatically adapts to dark mode
• Difficulty levels: Selectable speed (Easy, Medium, Hard)
• Highscore system: Saves best results via AJAX
• Security token: Protected API calls with token validation

Controls

• Desktop: Arrow keys ←↑→↓
• Mobile: Swipe in the desired direction

Code Highlights

Game Loop Implementation

function step() {
    if (!isRunning) return;

    // Update snake position
    direction = nextDirection;
    const head = {...snake[0]};

    // Move based on direction
    switch (direction) {
        case 'up': head.y--; break;
        case 'down': head.y++; break;
        case 'left': head.x--; break;
        case 'right': head.x++; break;
    }

    // Check collisions and update
    // ...

    // Schedule next frame
    gameLoop = setTimeout(step, delay);
}

Touch Controls for Mobile

canvas.addEventListener('touchmove', function(e) {
    const touch = e.touches[0];
    const dx = touch.clientX - touchStartX;
    const dy = touch.clientY - touchStartY;

    // Horizontal or vertical swipe?
    if (Math.abs(dx) > Math.abs(dy)) {
        nextDirection = dx > 0 ? 'right' : 'left';
    } else {
        nextDirection = dy > 0 ? 'down' : 'up';
    }
});

Conclusion

This Snake game shows how modern web technologies can be used to build interactive applications. The combination of canvas rendering, event handling, and AJAX communication forms the foundation for many browser-based games and applications.

Enjoy playing!

In developing the classic Snake game, I focus on a user-friendly interface and appealing design. The aim is to provide an entertaining experience for players of all skill levels. With difficulty settings ranging from easy to hard, every player can test and improve their abilities. I place particular emphasis on smooth game mechanics that optimise the playing experience and maximise enjoyment.

In this tutorial on developing the classic Snake game, you will learn step by step how to create an entertaining browser game with JavaScript. I show you how to implement the core game mechanics, from the start screen through to the scoring system. This project is an excellent way to deepen your programming skills whilst having fun — ideal for beginners and experienced developers alike.