/// <summary>
/// Keeps the given object within the boundaries of the room.
/// </summary>
/// <param name="obj">The object to keep in bounds.</param>
public void KeepInBounds(GameObject obj)
{
// if the object went outside the boundaries of the room, collide it with a wall and push
// it back in.
Vector2 oldPosition = obj.Position;
obj.Position = Vector2.Clamp(obj.Position, Vector2.Zero,
new Vector2(GetWidthInPixels() - obj.BBox.Width - 1, GetHeightInPixels() - obj.BBox.Height - 1));
if (oldPosition != obj.Position)
{
// TODO: properly create a region of collision corresponding to the amount of the exit overlapped
Vector2 change = new Vector2(Math.Abs(oldPosition.X - obj.Position.X),
Math.Abs(oldPosition.Y - obj.Position.Y));
obj.Collide(new Tile(TileType.Wall), new BBox(oldPosition, (int)change.X, (int)change.Y));
}
}
