/// <summary>
/// Changes the current state in the AI State Machine
/// </summary>
/// <param name="brainState"></param>
public virtual void ChangeBrainState(BrainState brainState)
{
// perform any exit operations from the previous state
if (currentBrainState != null)
{
currentBrainState.Exit();
}
// save the new brain state and enter
currentBrainState = brainState;
currentBrainState.Enter(this);
}
