digital-matrix-rain/cli.js

A cool matrix-style digital rain animation for terminal/console applications

#!/usr/bin/env node

/**
 * CLI for Matrix Animation Package
 */

const { MatrixRain } = require('./index.js');

// Parse command line arguments
const args = process.argv.slice(2);
const options = {};

// Default values
options.speed = 100;
options.color = 'green';
options.density = 0.1;

// Parse arguments
for (let i = 0; i < args.length; i++) {
  switch (args[i]) {
    case '--speed':
    case '-s':
      options.speed = parseInt(args[i + 1]) || 100;
      i++;
      break;
    case '--color':
    case '-c':
      options.color = args[i + 1] || 'green';
      i++;
      break;
    case '--density':
    case '-d':
      options.density = parseFloat(args[i + 1]) || 0.1;
      i++;
      break;
    case '--help':
    case '-h':
      console.log(`
Matrix Animation CLI

Usage: digital-matrix [options]

Options:
  -s, --speed <number>     Animation speed in ms (default: 100)
  -c, --color <color>      Color (green, red, blue, yellow, magenta, cyan, white)
  -d, --density <number>   Drop density 0.0-1.0 (default: 0.1)
  -h, --help              Show help

Examples:
  digital-matrix
  digital-matrix --speed 50 --color cyan
  digital-matrix -s 150 -c red -d 0.2

Press Ctrl+C to stop the animation.
`);
      process.exit(0);
      break;
  }
}

// Welcome message
console.log('🌊 Matrix Digital Rain Animation');
console.log('Press Ctrl+C to stop\n');

// Start animation after brief delay
setTimeout(() => {
  const matrix = new MatrixRain(options);
  matrix.start();
}, 1500);