/// <summary>
/// Class constructor.
/// <param name="stateTransition">The target transition.</param>
/// <param name="destination">The target destination.</param>
/// <param name="index">The transition index.</param>
/// <param name="blackboard">The state blackboard.</param>
/// </summary>
public TransitionGUI (StateTransition stateTransition, InternalStateBehaviour destination, int index, InternalBlackboard blackboard) {
m_Transition = stateTransition;
m_Destination = destination;
// It's a global event?
if (m_Transition.eventID < 0) {
if (InternalGlobalBlackboard.Instance != null)
m_FsmEvent = InternalGlobalBlackboard.Instance.GetFsmEvent(m_Transition.eventID);
}
// It's a local variable and the blackboard is not null?
else if (m_Transition.eventID > 0 && blackboard != null)
m_FsmEvent = blackboard.GetFsmEvent(m_Transition.eventID);
// Get the transition arrow vertical offset
m_VerticalOffset = StateGUI.defaultHeight + TransitionGUI.defaultHeight * (index + .35f);
}
/// <summary>
/// Removes the transition from the state.
/// <param name="state">The state that owns the target transition.</param>
/// <param name="transition">The transition to be removed.</param>
/// </summary>
public static void RemoveTransition (InternalStateBehaviour state, StateTransition transition) {
// Validate members
if (state != null && transition != null) {
// Register undo
#if UNITY_4_0_0 || UNITY_4_1 || UNITY_4_2
Undo.RegisterUndo (state, "Delete Transition");
#else
Undo.RecordObject (state, "Delete Transition");
#endif
// Remove transition
state.RemoveTransition(transition);
// Set state dirty flag
EditorUtility.SetDirty(state);
}
}
/// <summary>
/// Sets a new destination state to the supplied transition.
/// <param name="state">The state that owns the target transition.</param>
/// <param name="transition">The transition to set the new destination.</param>
/// <param name="destination">The new destination state.</param>
/// </summary>
public static void SetNewDestination (InternalStateBehaviour state, StateTransition transition, InternalStateBehaviour destination) {
// Validate members
if (state != null && transition != null) {
// Register undo
#if UNITY_4_0_0 || UNITY_4_1 || UNITY_4_2
Undo.RegisterUndo(state,"Transition Destination");
#else
Undo.RecordObject(state,"Transition Destination");
#endif
// Create a connection to the destination
transition.destination = destination;
// Set state dirty flag
EditorUtility.SetDirty(state);
}
}
/// <summary>
/// Sets a new event id in the supplied transition.
/// <param name="state">The state that owns the target transition.</param>
/// <param name="transition">The transition to set the new event id.</param>
/// <param name="eventId">The new event id.</param>
/// </summary>
public static void SetNewEvent (InternalStateBehaviour state, StateTransition transition, int eventId) {
// Validate members
if (state != null && transition != null) {
// Register undo
#if UNITY_4_0_0 || UNITY_4_1 || UNITY_4_2
Undo.RegisterUndo (state, "Transition Event");
#else
Undo.RecordObject (state, "Transition Event");
#endif
// Set transition event
transition.eventID = eventId;
// Set state dirty flag
EditorUtility.SetDirty(state);
}
}
/// <summary>
/// Clears everything stored in the drag & drop.
/// </summary>
public static void AcceptDrag () {
s_CandidateForDrag = null;
s_TransitionGUI = null;
s_Dragging = null;
s_StateGUI = null;
}
/// <summary>
/// Initiates a drag operation using the candidateForDrag transition supplied by PrepareStartDrag.
/// </summary>
public static void StartDrag () {
s_Dragging = s_CandidateForDrag.transition;
s_TransitionGUI = s_CandidateForDrag;
s_CandidateForDrag = null;
}
// public static StateTransition dragged;
#region Methods
/// <summary>
/// Clears the current dragging transition and prepares for initiating a drag operation.
/// <param name="transitionGUI">The transition gui candidate for dragging. You can access it later using the candidateForDrag property.</param>
/// <param name="guiState">The StateGUI that has the transitionGui.</param>
/// </summary>
public static void PrepareStartDrag (TransitionGUI transitionGUI, StateGUI guiState) {
s_CandidateForDrag = transitionGUI;
s_StateGUI = guiState;
s_Dragging = null;
}
/// <summary>
/// Function to fire onTransitionPerformed event in subclasses.
/// <param name="transition">The transition that was performed.</param>
/// </summary>
#if UNITY_EDITOR
protected void OnTransition (StateTransition transition) {
if (onTransitionPerformed != null)
onTransitionPerformed(transition);
}
/// <summary>
/// Removes a transition.
/// <param name="transition">The transition to be removed.</param>
/// </summary>
public void RemoveTransition (StateTransition transition) {
var transitionList = new List<StateTransition>(m_Transitions);
if (transitionList.Contains(transition)) {
transitionList.Remove(transition);
m_Transitions = transitionList.ToArray();
}
}
/// <summary>
/// Adds a new transition.
/// <param name="eventID">The event id of the new transition.</param>
/// <returns>The created transition.</returns>
/// </summary>
public StateTransition AddTransition (int eventID) {
var transitionList = new List<StateTransition>(m_Transitions);
var transition = new StateTransition();
transition.eventID = eventID;
transitionList.Add(transition);
m_Transitions = transitionList.ToArray();
return transition;
}