public void CenterTile(int tileX, int tileY)
{
System.Drawing.RectangleF viewportRect = ScreenToTile(new Rectangle(Viewport.X, Viewport.Y, Viewport.Width, Viewport.Height));
m_offsetX = (int)((tileX * -1) + (viewportRect.Width / 2));
m_offsetY = (int)((tileY * -1) + (viewportRect.Height / 2));
}