Complete Tetris Game HTML Code: A Step-by-Step Guide

This article provides a detailed guide and complete code for creating a Tetris game using HTML, CSS, and JavaScript. The code is structured for easy understanding and modification, making it a great starting point for beginners and experienced developers alike.

HTML Structure:

<!DOCTYPE html>
<html>
<head>
  <title>Tetris</title>
  <link rel="stylesheet" href="style.css">
</head>
<body>
  <canvas id="gameBoard" width="300" height="600"></canvas>
  <script src="script.js"></script>
</body>
</html>

CSS Styling:

#gameBoard {
  background-color: #000;
  border: 4px solid #fff;
}

JavaScript Logic:

const canvas = document.getElementById('gameBoard');
const ctx = canvas.getContext('2d');

// Game board dimensions
const rows = 20;
const cols = 10;

// Block size
const blockSize = 30;

// Tetromino shapes
const shapes = [
  [ // I shape
    [0, 0, 0, 0],
    [1, 1, 1, 1],
    [0, 0, 0, 0],
    [0, 0, 0, 0]
  ],
  [ // J shape
    [1, 0, 0],
    [1, 1, 1],
    [0, 0, 0]
  ],
  [ // L shape
    [0, 0, 1],
    [1, 1, 1],
    [0, 0, 0]
  ],
  [ // O shape
    [1, 1],
    [1, 1]
  ],
  [ // S shape
    [0, 1, 1],
    [1, 1, 0],
    [0, 0, 0]
  ],
  [ // T shape
    [0, 1, 0],
    [1, 1, 1],
    [0, 0, 0]
  ],
  [ // Z shape
    [1, 1, 0],
    [0, 1, 1],
    [0, 0, 0]
  ]
];

// Function to draw a block
function drawBlock(x, y, color) {
  ctx.fillStyle = color;
  ctx.fillRect(x * blockSize, y * blockSize, blockSize, blockSize);
  ctx.strokeStyle = '#fff';
  ctx.strokeRect(x * blockSize, y * blockSize, blockSize, blockSize);
}

// ... (rest of the game logic)

This code provides a basic structure for creating a Tetris game. You can extend this code further by adding features like:

Game over detection
Score tracking
Level progression
Different game modes
Sound effects

By modifying and expanding this code, you can create a complete and engaging Tetris game. This comprehensive guide provides a strong foundation for your game development journey.

Complete Tetris Game HTML Code: A Step-by-Step Guide