private void CheckTransitions()
{
while (_pushedTriggers.Count != 0)
{
FTrigger trigger = _pushedTriggers.Dequeue();
for (int i = 0; i < _activeStates.Count; ++i)
{
IState state = _activeStates[i];
ITransition transition = state.CheckTransitions(trigger);
if (transition != null)
{
if (transition.Target is IHistoryState historyState)
{
if (historyState.LastState == null)
{
FAssert.IsNotNull(historyState.Parent, $"`{historyState.Name}` parent is null. A history state should always have parent!");
historyState.LastState = historyState.Parent.InitialState;
}
FireTransition(state, new FTransition(transition.Trigger, historyState.LastState, transition.Condition, transition.Actions));
}
else
{
FireTransition(state, transition);
}
break;
}
}
}
}
public void AddTransition(FTrigger trigger, IState target)
{
FAssert.IsTrue(trigger != null, "Trigger is invalid.");
FAssert.IsNotNull(target, $"Target state can't be null.");
_transitions.Add(new FTransition(trigger, target));
}
public void AddTransition(FTrigger trigger, IState target, IEnumerable <ITransitionAction> actions)
{
FAssert.IsTrue(trigger != null, "Trigger is invalid.");
FAssert.IsNotNull(target, $"Target state can't be null.");
FAssert.IsNotNull(actions, "Actions can't be null");
_transitions.Add(new FTransition(trigger, target, actions));
}
public void AddTransition(FTrigger trigger, IState target, ICondition condition, ITransitionAction action)
{
FAssert.IsTrue(trigger != null, "Trigger is invalid.");
FAssert.IsNotNull(target, $"Target state can't be null.");
FAssert.IsNotNull(condition, $"Condition can't be null.");
FAssert.IsNotNull(action, "Action can't be null");
_transitions.Add(new FTransition(trigger, target, condition, action));
}
public void PushTrigger(FTrigger trigger)
{
_pushedTriggers.Enqueue(trigger);
if (_isCheckingTransitions == false)
{
_isCheckingTransitions = true;
CheckTransitions();
_isCheckingTransitions = false;
}
}
ITransition IState.CheckTransitions(FTrigger trigger)
{
for (int i = 0; i < _transitions.Count; i++)
{
ITransition transaction = _transitions[i];
if (transaction.IsTriggered(trigger))
{
return(transaction);
}
}
return(null);
}
bool ITransition.IsTriggered(FTrigger trigger)
{
return(this._trigger == trigger && (_condition == null || _condition.Evaluate()));
}
public FTransition(FTrigger trigger, IState target, ICondition condition, IEnumerable <ITransitionAction> actions) : this(trigger, target, condition)
{
this._actions.AddRange(actions);
}
public FTransition(FTrigger trigger, IState target, ICondition condition, ITransitionAction action) : this(trigger, target, condition)
{
_actions.Add(action);
}
public FTransition(FTrigger trigger, IState target, ICondition condition) : this(trigger, target)
{
this._condition = condition;
}
public FTransition(FTrigger trigger, IState target) : this(trigger)
{
this._target = target;
}
private FTransition(FTrigger trigger)
{
this._trigger = trigger;
}