updateParticles method
Updates all particles' state based on the current simulation frame
particles - List of all active particles
bounds - Current container size for boundary checking
Implementation
@override
void updateParticles(List<Particle> particles, Size bounds) {
// Process each particle using basic Euler integration
for (final Particle p in particles) {
p.update(bounds);
}
// Note: The actual Particle.update() method should handle:
// 1. Position integration
// 2. Boundary collisions
// 3. Velocity updates
// 4. Any other physics effects
}