/// <summary>
/// Called when the GameComponent needs to be updated.
/// Called for each component sequentially based on after FixedUpdate and ParallelUpdate.
/// </summary>
/// <param name="elapsed">Variable time since last frame.</param>
public virtual void Update(GameTime time)
{
}
/// <summary>
/// Called when the GameComponent needs to be updated.
/// Called in parallel with all other systems after sequential FixedUpdate.
/// </summary>
/// <param name="elapsed">Fixed time step since the last update.</param>
public virtual void ParallelUpdate(GameTime time) { }
