public void DeselectAll()
{
SelectedPositions.Clear();
SelectedMapObjects.Clear();
OnMapPositionSelectionChanged?.Invoke(this);
Redraw();
}
public void CheckSelection()
{
//check if any selected position is now out of map
SelectedPositions.RemoveWhere(pos => !Map.IsPositionWithin(pos));
CheckMapObjectSelection();
OnMapPositionSelectionChanged?.Invoke(this);
Redraw();
}
// selects the hovered position.
private void SelectHoveredPosition(bool drag)
{
Multiselect = Keyboard.IsKeyDown(Key.LeftCtrl);
/****************/
if (Multiselect)
{
if (HoveredPosition != null && Map.IsPositionWithin(HoveredPosition))
{
if (!drag)
{
if (SelectedPositions.RemoveWhere(pos => pos.Equals(HoveredPosition)) == 0)
{
SelectedPositions.Add(HoveredPosition);
}
}
else
{
SelectedPositions.Add(HoveredPosition);
}
}
}
else
{
bool positionAlreadySelected = SelectedPositions.Where(pos => pos.Equals(HoveredPosition)).Count() > 0;
bool multiplePositionsSelected = SelectedPositions.Count > 1;
SelectedPositions.Clear();
if (HoveredPosition != null && Map.IsPositionWithin(HoveredPosition) && (drag || !positionAlreadySelected || multiplePositionsSelected))
{
SelectedPositions.Add(HoveredPosition);
}
}
/****************/
CheckMapObjectSelection();
OnMapPositionSelectionChanged?.Invoke(this);
Redraw();
}