update method

@override void update(double deltaTime, Size size)

Implementation

@override
void update(double deltaTime, Size size) {
  _buildGradientRect(size);
  _buildGradients();
  _buildPaints(size);
  fireGradient.update(deltaTime);
  smokeGradient.update(deltaTime);
  lightGradient.update(deltaTime);
  for (int i = 0; i < fireParticlesPerTick; i++) {
    _spawnFlameParticle(size);
  }
  for (int i = 0; i < smokeParticlesPerTick; i++) {
    _spawnSmokeParticle(size);
  }
  for (EParticle eParticle in _flameParticleList) {
    eParticle.update(deltaTime, size);
    if (eParticle.radius <= 0) {
      _flameParticleList.remove(eParticle);
    }
  }
  for (EParticle eParticle in _smokeParticleList) {
    eParticle.update(deltaTime, size);
    //determines how big the smoke particle can get
    if (eParticle.radius >= 3 * startSize.getAbsoluteValue(size)) {
      _smokeParticleList.remove(eParticle);
    }
  }
}