// ------------------------------------------------------------------------------------
#region Transition manipulation
// Add animation leading from one node to another.
// You can pass existing instance of transition (for example, you need subclass), however, it must not be present anywhere else.
// Returns instanced transition, where you can add your conditions etc.
// Returns null on failure.
public MyStateMachineTransition AddTransition(string startNodeName, string endNodeName, MyStateMachineTransition existingInstance = null)
{
// nodes are passed through their names because of these checks:
var startNode = FindNode(startNodeName);
var endNode = FindNode(endNodeName);
if (startNode == null || endNode == null)
{
return(null);
}
MyStateMachineTransition rtnTransition;
if (existingInstance == null)
{
// autocreate
rtnTransition = new MyStateMachineTransition();
}
else
{
// check
Debug.Assert(existingInstance.TargetNode == null, "Target node of existing transition must be null.");
rtnTransition = existingInstance;
}
m_transitionIdCounter++;
rtnTransition._SetId(m_transitionIdCounter);
rtnTransition.TargetNode = endNode;
startNode.Transitions.Add(rtnTransition);
m_transitions.Add(m_transitionIdCounter, new MyStateMachineTransitionWithStart(startNode, rtnTransition));
return(rtnTransition);
}
// Fires change event for all registered instances.
private void NotifyCursorChanged(MyStateMachineTransition transition)
{
if (OnCursorStateChanged != null)
{
OnCursorStateChanged(transition.Id, Node, StateMachine);
}
}
protected override void TransitionRemovedInternal(MyStateMachineTransition transition)
{
// is Incoming edge
if (transition.TargetNode == this)
{
var transitionIndex = InTransitions.IndexOf(transition);
m_cursorsFromInEdgesReceived.RemoveAt(transitionIndex);
}
}
// Performs transition to different state. Fires state change event.
public void FollowTransition(MyStateMachineTransition transition)
{
Debug.Assert(Node.OutTransitions.Contains(transition));
// Manage Nodes cursors set.
Node.Cursors.Remove(this);
transition.TargetNode.Cursors.Add(this);
// Do transition
Node = transition.TargetNode;
LastTransitionTakenId = transition.Id;
NotifyCursorChanged(transition);
}
// Performs transition to different state. Fires state change event.
public void FollowTransition(MyStateMachineTransition transition)
{
Debug.Assert(Node.OutTransitions.Contains(transition));
// Manage Nodes cursors set.
Node.Cursors.Remove(this);
transition.TargetNode.Cursors.Add(this);
// Do transition
Node = transition.TargetNode;
LastTransitionTakenId = transition.Id;
NotifyCursorChanged(transition);
}
protected override void TransitionAddedInternal(MyStateMachineTransition transition)
{
// is Incoming edge
if (transition.TargetNode == this)
{
m_cursorsFromInEdgesReceived.Add(false);
}
else
{
Debug.Assert(OutTransitions.Count < 2, "Only one output per barrier node intended.");
}
}
/// <summary>
/// Called before Transition remove.
/// Override for custom behavior.
/// </summary>
protected virtual void TransitionRemovedInternal(MyStateMachineTransition transition)
{
}
// Gets called by state machine when transtion is removed
// Leave INTERNAL
internal void TransitionRemoved(MyStateMachineTransition transition)
{
TransitionRemovedInternal(transition);
}
// ------------------------------------------------------------------------------------
#region Transition manipulation
// Add animation leading from one node to another.
// You can pass existing instance of transition (for example, you need subclass), however, it must not be present anywhere else.
// Returns instanced transition, where you can add your conditions etc.
// Returns null on failure.
public MyStateMachineTransition AddTransition(string startNodeName, string endNodeName, MyStateMachineTransition existingInstance = null)
{
// nodes are passed through their names because of these checks:
var startNode = FindNode(startNodeName);
var endNode = FindNode(endNodeName);
if (startNode == null || endNode == null)
return null;
MyStateMachineTransition rtnTransition;
if (existingInstance == null)
{
// autocreate
rtnTransition = new MyStateMachineTransition();
}
else
{
// check
Debug.Assert(existingInstance.TargetNode == null, "Target node of existing transition must be null.");
rtnTransition = existingInstance;
}
m_transitionIdCounter++;
rtnTransition._SetId(m_transitionIdCounter);
rtnTransition.TargetNode = endNode;
startNode.Transitions.Add(rtnTransition);
m_transitions.Add(m_transitionIdCounter, new MyStateMachineTransitionWithStart(startNode, rtnTransition));
return rtnTransition;
}
/// <summary>
/// Called before Transition remove.
/// Override for custom behavior.
/// </summary>
protected virtual void TransitionRemovedInternal(MyStateMachineTransition transition) { }
// Gets called by state machine when transtion is removed
// Leave INTERNAL
internal void TransitionRemoved(MyStateMachineTransition transition)
{
TransitionRemovedInternal(transition);
}
/// <summary>
/// Full constructor.
/// </summary>
public MyStateMachineTransitionWithStart(MyStateMachineNode startNode, MyStateMachineTransition transition)
{
StartNode = startNode;
Transition = transition;
}
/// <summary>
/// Full constructor.
/// </summary>
public MyStateMachineTransitionWithStart(MyStateMachineNode startNode, MyStateMachineTransition transition)
{
StartNode = startNode;
Transition = transition;
}
// Fires change event for all registered instances.
private void NotifyCursorChanged(MyStateMachineTransition transition)
{
if(OnCursorStateChanged != null)
OnCursorStateChanged(transition.Id, Node, StateMachine);
}
