Method applyVariance

source/game/StarParticle.cpp:192–202

}

void Particle::applyVariance(Particle const& variance) {
  size += variance.size * Random::randf(-1.0f, 1.0f);
  position += {variance.position[0] * Random::randf(-1.0f, 1.0f), variance.position[1] * Random::randf(-1.0f, 1.0f)};
  velocity += {variance.velocity[0] * Random::randf(-1.0f, 1.0f), variance.velocity[1] * Random::randf(-1.0f, 1.0f)};
  finalVelocity +=
      {variance.finalVelocity[0] * Random::randf(-1.0f, 1.0f), variance.finalVelocity[1] * Random::randf(-1.0f, 1.0f)};
  rotation += variance.rotation * Random::randf(-1.0f, 1.0f);
  angularVelocity += variance.angularVelocity * Random::randf(-1.0f, 1.0f);
  length += variance.length * Random::randf(-1.0f, 1.0f);
  timeToLive += variance.timeToLive * Random::randf(-1.0f, 1.0f);
}

void Particle::collide(Vec2F const& collisionPosition) {
  position = collisionPosition;