// enter state behaviour
public virtual void Enter(AIStateInitializationData initData = null)
{
// if has parent and parent is not active, enter parent state
if (_active)
{
return;
}
if (ParentState != null)
{
ParentState.OnReadyToTransitionState += SetReadyToTransition;
ParentState.Enter(initData);
}
OnEnter();
}
// listener that changes AI State
private void OnReadyToTransitionState(AIState nextState, AIStateInitializationData initData = null)
{
// exit the current state
if (_currentState != null)
{
_currentState.Exit(nextState);
_currentState.OnReadyToTransitionState -= OnReadyToTransitionState;
}
// if there is a state queue override, continue the queue instead
if (_queuedStateList.Count != 0)
{
AIStateDataEntry entry = _queuedStateList.Dequeue();
SetNextState(entry.State, entry.Data);
return;
}
SetNextState(nextState, initData);
}
// fires ready to transition event for AI State Machine listener
protected void SetReadyToTransition(AIState state, AIStateInitializationData initData = null)
{
OnReadyToTransitionState?.Invoke(state, initData);
}
private void SetNextState(AIState state, AIStateInitializationData initData = null)
{
_currentState = state;
_currentState.OnReadyToTransitionState += OnReadyToTransitionState;
_currentState.Enter(initData);
}
