private void PerformChangeState()
{
if (requestedNewState == null)
{
throw new ArgumentNullException("requestedNewState");
}
if (requestedNewState.Owner == null)
{
throw new ArgumentNullException("requestedNewState.owner");
}
Log.AI(owner.ToString(), "Changing state to " + requestedNewState.ToString());
State previousState = CurrentState;
Log.AI(owner.ToString(), "Previous state was " + (previousState != null ? previousState.ToString() : "null"));
if (CurrentState != null)
{
CurrentState.Leave();
}
CurrentState = requestedNewState;
requestedNewState = null;
if (CurrentState.Enter() == false)
{
CurrentState = null;
Log.AI(owner.ToString(), "Failed to enter new state. Reverting to previous state.");
ChangeState(previousState);
}
}
