/// <summary>
/// Executes the action.
/// </summary>
public void Execute()
{
if (_gameObjects.Count != 0)
{
// Take a snapshot to allow for undo
_preChangeMaskSnapshot = new ObjectSelectionMaskSnapshot();
_preChangeMaskSnapshot.TakeSnapshot();
// Assign the objects to the selection mask.
// Note: We will also perform a snapshot of the current object selection just in case
// the object selection changes after the objects are assigned to the mask.
_preChangeSelectionSnapshot = new ObjectSelectionSnapshot();
_preChangeSelectionSnapshot.TakeSnapshot();
EditorObjectSelection editorObjectSelection = EditorObjectSelection.Instance;
_selectionWasChanged = editorObjectSelection.AddGameObjectCollectionToSelectionMask(_gameObjects);
// If the selection was changed, we will perform a snapshot post change to make sure that we
// can undo and redo the action accordingly. For example, if assigning the objects to the mask
// caused a selection change, when the operation is undone, we want to restore both the mask
// and the state that the selection was in before the mask was updated.
if (_selectionWasChanged)
{
_postChangeSelectionSnapshot = new ObjectSelectionSnapshot();
_postChangeSelectionSnapshot.TakeSnapshot();
}
// Take a snapshot to allow for redo
_postChangeMaskSnapshot = new ObjectSelectionMaskSnapshot();
_postChangeMaskSnapshot.TakeSnapshot();
ObjectsAddedToSelectionMaskMessage.SendToInterestedListeners(_gameObjects);
EditorUndoRedoSystem.Instance.RegisterAction(this);
}
}
/// <summary>
/// Executes the action.
/// </summary>
public void Execute()
{
// Only delete if we didn't delete already and if we are allowed to delete
if (_postDeleteSnapshot == null)
{
// Take a pre delete selection snapshot which will allow us to undo
_preDeleteSnapshot = new ObjectSelectionSnapshot();
_preDeleteSnapshot.TakeSnapshot();
// Store the currently selected objects (we'll need them later) and clear the selection
List <GameObject> allSelectedObjects = new List <GameObject>(EditorObjectSelection.Instance.SelectedGameObjects);
// Loop through each selected object
_deletedObjects = new List <GameObject>(allSelectedObjects.Count);
foreach (var selectedObject in allSelectedObjects)
{
// Add the object to the deleted list and make it inactive
_deletedObjects.Add(selectedObject);
selectedObject.SetActive(false);
}
// Take a post delete snapshot to allow us to redo
_postDeleteSnapshot = new ObjectSelectionSnapshot();
_postDeleteSnapshot.TakeSnapshot();
// Inform the selection module that the objects were deleted
EditorObjectSelection.Instance.OnDeleted();
// Record th action with the Undo/Redo system
EditorUndoRedoSystem.Instance.RegisterAction(this);
}
}
public static ObjectSelectionChangedEventArgs FromSnapshots(ObjectSelectActionType selectActionType, ObjectDeselectActionType deselectActionType,
ObjectSelectionSnapshot preChangeSnapshot, ObjectSelectionSnapshot postChangeSnapshot)
{
List <GameObject> preDiff = preChangeSnapshot.GetDiff(postChangeSnapshot);
List <GameObject> postDiff = postChangeSnapshot.GetDiff(preChangeSnapshot);
return(new ObjectSelectionChangedEventArgs(selectActionType, postDiff, deselectActionType, preDiff));
}
/// <summary>
/// Returns a list of all objects which reside in 'this' snapshot, but not in 'other'.
/// </summary>
public List <GameObject> GetDiff(ObjectSelectionSnapshot other)
{
if (NumberOfSelectedObjects == 0)
{
return(new List <GameObject>());
}
var diffObjects = new List <GameObject>();
foreach (var obj in _selectedGameObjects)
{
if (!other.Contains(obj))
{
diffObjects.Add(obj);
}
}
return(diffObjects);
}
/// <summary>
/// Constructor.
/// </summary>
/// <param name="preChangeSelectionSnapshot">
/// The object selection snapshot taken before the selection was changed.
/// </param>
/// <param name="postChangeSelectionSnapshot">
/// The object selection snapshot taken after the selection was changed.
/// </param>
public PostObjectSelectionChangedAction(ObjectSelectionSnapshot preChangeSelectionSnapshot,
ObjectSelectionSnapshot postChangeSelectionSnapshot)
{
_preChangeSelectionSnapshot = preChangeSelectionSnapshot;
_postChangeSelectionSnapshot = postChangeSelectionSnapshot;
}