public void GotoNewState(BehaviourState newState, TransitionMode transitionMode)
{
BehaviourState oldState = currentState;
oldState.ExitState(owner);
#if VERBOSE_AI_STATES
Debug.Log("AI state change: [" + oldState.GetType().Name + "] --> [" + newState.GetType().Name + "] :: <" + transitionMode + ">");
#endif
switch(transitionMode) {
case TransitionMode.PopPrevious:
// Go back to the previous state on the stack
BehaviourState nextState = stateStack.Pop();
if(nextState != null) {
currentState = nextState;
}
else {
// in case there was no state on the stack, go back to base state
currentState = baseState;
}
break;
case TransitionMode.PushCurrent:
// Pushes the current state onto the stack and goes to the returned next state
stateStack.Push(currentState);
currentState = newState;
if(currentState == null) {
// If a null state was added, go back tot eh previous one
currentState = stateStack.Pop();
}
break;
case TransitionMode.AbandonCurrent:
// Go to the new state, without pushing the current one on the stack
if(newState != null) {
currentState = newState;
}
break;
}
currentState.EnterState(owner);
}