public override void OnMouseDragBegin(MouseEventArgs e)
{
Point2I mousePos = new Point2I(e.X, e.Y);
Point2I tileCoord = LevelDisplayControl.SampleLevelTileCoordinates(mousePos);
Point2I point = LevelDisplayControl.SampleLevelPixelPosition(mousePos);
if (isCreatingSelectionBox || isMovingSelectionBox)
{
return;
}
// Draw a new selecion box.
if (e.Button == MouseButtons.Left)
{
if (EditorControl.Level == LevelDisplayControl.SelectionGridLevel &&
LevelDisplayControl.SelectionBox.Contains(point))
{
// Begin moving the selection box.
isMovingSelectionBox = true;
dragBeginPoint = point;
dragBeginTileCoord = tileCoord;
selectionBoxBeginPoint = LevelDisplayControl.SelectionGridArea.Point;
//LevelDisplayControl.PickupSelectionGrid();
// Duplicate selection if holding Ctrl.
if (System.Windows.Forms.Control.ModifierKeys.HasFlag(KEYMOD_DUPLICATE))
{
LevelDisplayControl.DuplicateSelectionGrid();
}
}
else
{
LevelDisplayControl.PlaceSelectionGrid();
// Create a new selection box.
isCreatingSelectionBox = true;
dragBeginPoint = point;
dragBeginTileCoord = tileCoord;
Rectangle2I selectionBox;
Level level = EditorControl.Level;
if (System.Windows.Forms.Control.ModifierKeys.HasFlag(KEYMOD_ROOM_MODE))
{
selectionBox = new Rectangle2I(level.GetRoomLocation(
(LevelTileCoord)dragBeginTileCoord), Point2I.One);
Rectangle2I levelBounds = new Rectangle2I(Point2I.Zero, level.Dimensions);
selectionBox = Rectangle2I.Intersect(selectionBox, levelBounds);
selectionBox.Point *= level.RoomSize;
selectionBox.Size *= level.RoomSize;
}
else
{
selectionBox = new Rectangle2I(dragBeginTileCoord, Point2I.One);
Rectangle2I levelBounds = new Rectangle2I(Point2I.Zero, level.RoomSize * level.Dimensions);
selectionBox = Rectangle2I.Intersect(selectionBox, levelBounds);
}
LevelDisplayControl.SetSelectionGridArea(selectionBox, level);
}
}
}