///<summary>
/// Adds an entity to the manager.
///</summary>
///<param name="e">Entity to add.</param>
///<exception cref="InvalidOperationException">Thrown if the entity already belongs to a states manager.</exception>
public void Add(Entity e)
{
lock (InterpolatedStates.FlipLocker)
{
lock (ReadBuffers.FlipLocker)
{
if (e.BufferedStates.BufferedStatesManager == null)
{
e.BufferedStates.BufferedStatesManager = this;
e.BufferedStates.motionStateIndex = entities.Count;
entities.Add(e);
if (ReadBuffers.Enabled)
{
ReadBuffers.Add(e);
}
if (InterpolatedStates.Enabled)
{
InterpolatedStates.Add(e);
}
}
else
{
throw new InvalidOperationException("Entity already belongs to a BufferedStatesManager; cannot add.");
}
}
}
}
///<summary>
/// Removes an entity from the manager.
///</summary>
///<param name="e">Entity to remove.</param>
///<exception cref="InvalidOperationException">Thrown if the entity does not belong to this manager.</exception>
public void Remove(Entity e)
{
lock (InterpolatedStates.FlipLocker)
{
lock (ReadBuffers.FlipLocker)
{
if (e.BufferedStates.BufferedStatesManager == this)
{
int index = entities.IndexOf(e);
int endIndex = entities.Count - 1;
entities[index] = entities[endIndex];
entities.RemoveAt(endIndex);
if (index < entities.Count)
{
entities[index].BufferedStates.motionStateIndex = index;
}
if (ReadBuffers.Enabled)
{
ReadBuffers.Remove(index, endIndex);
}
if (InterpolatedStates.Enabled)
{
InterpolatedStates.Remove(index, endIndex);
}
e.BufferedStates.BufferedStatesManager = null;
}
else
{
throw new InvalidOperationException("Entity does not belong to this BufferedStatesManager; cannot remove.");
}
}
}
}
