///Create a new Connection. Use this for constructor
public static Connection Create(Node source, Node target, int sourceIndex){
if (source == null || target == null){
Debug.LogError("Can't Create a Connection without providing Source and Target Nodes");
return null;
}
if (source is MissingNode){
Debug.LogError("Creating new Connections from a 'MissingNode' is not allowed. Please resolve the MissingNode node first");
return null;
}
var newConnection = (Connection)System.Activator.CreateInstance(source.outConnectionType);
#if UNITY_EDITOR
if (!Application.isPlaying){
UnityEditor.Undo.RecordObject(source.graph, "Create Connection");
}
#endif
newConnection.sourceNode = source;
newConnection.targetNode = target;
source.outConnections.Insert(sourceIndex, newConnection);
target.inConnections.Add(newConnection);
newConnection.OnValidate(sourceIndex, target.inConnections.IndexOf(newConnection));
return newConnection;
}
///Duplicate the connection providing a new source and target
public Connection Duplicate(Node newSource, Node newTarget){
if (newSource == null || newTarget == null){
Debug.LogError("Can't Duplicate a Connection without providing NewSource and NewTarget Nodes");
return null;
}
//deep clone
var newConnection = JSONSerializer.Deserialize<Connection>( JSONSerializer.Serialize(typeof(Connection), this) );
#if UNITY_EDITOR
if (!Application.isPlaying){
UnityEditor.Undo.RecordObject(newSource.graph, "Duplicate Connection");
}
#endif
newConnection.SetSource(newSource, false);
newConnection.SetTarget(newTarget, false);
var assignable = this as ITaskAssignable;
if (assignable != null && assignable.task != null)
(newConnection as ITaskAssignable).task = assignable.task.Duplicate(newSource.graph);
newConnection.OnValidate(newSource.outConnections.IndexOf(newConnection), newTarget.inConnections.IndexOf(newConnection));
return newConnection;
}
///Relinks the target node of the connection
public void SetTarget(Node newTarget, bool isRelink = true){
#if UNITY_EDITOR
if (!Application.isPlaying){
UnityEditor.Undo.RecordObject(graph, "Set Target");
}
#endif
if (isRelink){
var i = targetNode.inConnections.IndexOf(this);
targetNode.OnParentDisconnected(i);
newTarget.OnParentConnected(i);
targetNode.inConnections.Remove(this);
}
newTarget.inConnections.Add(this);
targetNode = newTarget;
}
///Relinks the source node of the connection
public void SetSource(Node newSource, bool isRelink = true){
#if UNITY_EDITOR
if (!Application.isPlaying && graph != null){
UnityEditor.Undo.RecordObject(graph, "Set Source");
}
#endif
if (isRelink){
var i = sourceNode.outConnections.IndexOf(this);
sourceNode.OnChildDisconnected(i);
newSource.OnChildConnected(i);
sourceNode.outConnections.Remove(this);
}
newSource.outConnections.Add(this);
sourceNode = newSource;
}
public override void OnGraphStarted()
{
targetNode = graph.GetNodeWithTag<Node>(targetNodeTag);
}
///Relinks the target node of the connection
public void SetTarget(Node newTarget)
{
#if UNITY_EDITOR
if (!Application.isPlaying){
UnityEditor.Undo.RecordObject(graph, "Relink Target");
}
#endif
newTarget.inConnections.Add(this);
targetNode.inConnections.Remove(this);
targetNode = newTarget;
}
///Relinks the source node of the connection
public void SetSource(Node newSource)
{
#if UNITY_EDITOR
if (!Application.isPlaying && graph != null){
UnityEditor.Undo.RecordObject(graph, "Relink Target");
}
#endif
newSource.outConnections.Add(this);
sourceNode.outConnections.Remove(this);
sourceNode = newSource;
}
///Returns if a new connection should be allowed with the source node.
public bool IsNewConnectionAllowed(Node sourceNode){
if (this == sourceNode){
Debug.LogWarning("Node can't connect to itself");
return false;
}
if (sourceNode.outConnections.Count >= sourceNode.maxOutConnections && sourceNode.maxOutConnections != -1){
Debug.LogWarning("Source node can have no more out connections.");
return false;
}
if (this == graph.primeNode && maxInConnections == 1){
Debug.LogWarning("Target node can have no more connections");
return false;
}
if (maxInConnections <= inConnections.Count && maxInConnections != -1){
Debug.LogWarning("Target node can have no more connections");
return false;
}
return true;
}