createParticle method

@override Particle createParticle(Size size)

Creates a new particle within specified bounds

size - The available space where particles can be placed Returns: A new Particle instance with randomized properties

Implementation

@override
Particle createParticle(Size size) {
  // Generate random velocity vector components:
  // (random.nextDouble() - 0.5) creates values in [-0.5, 0.5]
  // Multiplying by 2*maxSpeed gives range [-maxSpeed, maxSpeed]
  final Offset velocity = Offset(
    (random.nextDouble() - 0.5) * maxSpeed,
    (random.nextDouble() - 0.5) * maxSpeed,
  );

  // Create and return new particle with randomized properties
  return Particle(
    color: color,
    // Random position within bounds (0 to size.width/height)
    position: Offset(
      random.nextDouble() * size.width,
      random.nextDouble() * size.height,
    ),
    velocity: velocity,
    // Random size between 1 and maxSize (avoiding 0-sized particles)
    size: random.nextDouble() * maxSize + 1,
  );
}