/// <summary>
/// Remove the suplied branch from the tree.
/// <param name="branch">The node to be removed.</param>
/// <returns>True if the node was successfully removed; false otherwise.</returns>
/// </summary>
public static bool RemoveBranch(BranchNode branch)
{
// The Branch is not a decorator
if (branch != null && branch.tree != null)
{
// Gets parent's children and node's id
var parent = branch.branch;
ActionNode[] children = branch.children;
var tree = branch.tree;
// The parent is a decorator or null (node is root) and the branch has more than one child?
if (children.Length >= 2 && (parent == null || parent is DecoratorNode) || parent == null)
{
EditorApplication.Beep();
return(false);
}
// Register Undo
#if UNITY_4_0_0 || UNITY_4_1 || UNITY_4_2
Undo.RegisterUndo(branch.tree, "Remove Branch");
#else
Undo.RecordObject(branch.tree, "Remove Branch");
#endif
// Removes children from branch and adds to parent
if (parent != null)
{
// Get the branch index
int branchIndex = (new List <ActionNode>(parent.children)).IndexOf(branch);
parent.Remove(branch);
for (int i = 0; i < children.Length; i++)
{
branch.Remove(children[i]);
parent.Insert(branchIndex++, children[i]);
}
// Call OnValidate on the parent
parent.OnValidate();
}
// Removes node from tree
tree.RemoveNode(branch, false);
// Saves tree and marks dirty flag
StateUtility.SetDirty(tree);
return(true);
}
return(false);
}
