public override UndoResult Undo(string socketId)
{
PlacementCommand command = _context.Commands.Where(s => s.SocketId.Contains(socketId)).LastOrDefault();
if (command != null)
{
//restoring ShipSelection to previous iteration
ShipSelection selection = shipSelectionController.GetSelection(socketId);
selection.Count = command.SelectionCount;
selection.IsSelected = command.SelectionIsSelected;
selection.Size = command.SelectionSize;
selection.ShipTypeId = command.SelectionShipTypeId;
selection.ButtonId = command.SelectionButtonId;
selection.Button0IsRemoved = command.SelectionButton0IsRemoved;
selection.Button1IsRemoved = command.SelectionButton1IsRemoved;
selection.Button2IsRemoved = command.SelectionButton2IsRemoved;
selection.Button3IsRemoved = command.SelectionButton3IsRemoved;
selection.Button4IsRemoved = command.SelectionButton4IsRemoved;
_context.SaveChanges();
List <bool> buttons = new List <bool>();
buttons.Add(command.SelectionButton0IsRemoved);
buttons.Add(command.SelectionButton1IsRemoved);
buttons.Add(command.SelectionButton2IsRemoved);
buttons.Add(command.SelectionButton3IsRemoved);
buttons.Add(command.SelectionButton4IsRemoved);
string activeButton = command.SelectionButtonId;
//deleting all cells with the last place ship id
List <Coordinate> coordinates = new List <Coordinate>();
Ship shipToRemove = GetShip(GetCell(command.CellId).ShipId);
List <Cell> cells = GetCellsByShip(GetCell(command.CellId).ShipId);
foreach (var cell in cells)
{
coordinates.Add(new Coordinate(cell.PosX, cell.PosY));
_context.Cells.Remove(cell);
_context.SaveChanges();
}
_context.Ships.Remove(shipToRemove);
_context.Commands.Remove(command);
_context.SaveChanges();
return(new UndoResult(coordinates, activeButton, buttons));
}
return(null);
}
public MainViewModel()
{
timer = ServiceLocator.Current.GetInstance <ITimerService>();
timer.Tick += Timer_Tick;
timer.Start(new TimeSpan(0, 0, 0, 0, 001));
initializeSimulation();
X = 400;
Y = 400;
isRandomPlacement = false;
this.setXAndY();
Add = new AddBoidCommand(this);
Exit = new ExitCommand(this);
Pause = new PauseCommand(this);
Sliders = new SliderHandler(this);
ChangePlacement = new PlacementCommand(this);
}
//creating a record of this command, so it can be undone later
public void SaveCommand(Cell cell, ShipSelection selection, string socketId)
{
PlacementCommand command = new PlacementCommand();
command.CellId = cell.CellId;
command.IsArmor = false;
command.SocketId = socketId;
//saving selection current values
command.SelectionShipSelectionId = selection.ShipSelectionId;
command.SelectionCount = selection.Count;
command.SelectionIsSelected = selection.IsSelected;
command.SelectionSize = selection.Size;
command.SelectionShipTypeId = selection.ShipTypeId;
command.SelectionButtonId = selection.ButtonId;
command.SelectionButton0IsRemoved = selection.Button0IsRemoved;
command.SelectionButton1IsRemoved = selection.Button1IsRemoved;
command.SelectionButton2IsRemoved = selection.Button2IsRemoved;
command.SelectionButton3IsRemoved = selection.Button3IsRemoved;
command.SelectionButton4IsRemoved = selection.Button4IsRemoved;
_context.Commands.Add(command);
_context.SaveChanges();
}