/// <summary>
/// Generates the diff from the previously recorded state and the current state. If there is a difference
/// an undo command is recorded.
/// </summary>
internal void RecordCommand()
{
if (objs == null)
{
return;
}
List <SceneObjectHeaderUndo> headers = new List <SceneObjectHeaderUndo>();
for (int i = 0; i < objs.Length; i++)
{
SceneObject obj = objs[i];
SceneObjectState orgState = orgStates[i];
if (obj.IsDestroyed)
{
continue;
}
SceneObjectDiff oldToNew = SceneObjectDiff.Create(orgState, SceneObjectState.Create(obj));
if (oldToNew.flags == 0)
{
continue;
}
SceneObjectDiff newToOld = SceneObjectDiff.Create(SceneObjectState.Create(obj), orgState);
headers.Add(new SceneObjectHeaderUndo(obj, newToOld, oldToNew));
}
if (headers.Count > 0)
{
UndoRedo.Global.RegisterCommand(new RecordSceneObjectHeaderUndo(headers, path));
}
}
/// <summary>
/// Creates a new object instance, recording the current state of the scene object header.
/// </summary>
/// <param name="obj">Scene object to record the state of.</param>
/// <param name="path">
/// Path to the field which should be focused when performing the undo/redo operation.
/// </param>
internal SceneObjectHeaderToRecord(SceneObject obj, string path)
{
this.objs = new [] { obj };
this.path = path;
orgStates = new [] { SceneObjectState.Create(obj) };
}
/// <summary>
/// Creates a new object instance, recording the current state of the scene object header for multiple scene
/// objects.
/// </summary>
/// <param name="objs">Scene objects to record the state of.</param>
/// <param name="path">
/// Path to the field which should be focused when performing the undo/redo operation.
/// </param>
internal SceneObjectHeaderToRecord(SceneObject[] objs, string path)
{
this.objs = objs;
this.path = path;
orgStates = new SceneObjectState[objs.Length];
for (int i = 0; i < orgStates.Length; i++)
{
orgStates[i] = SceneObjectState.Create(objs[i]);
}
}