// Select button pressed
public virtual void OnSelectBegin()
{
mode.LockTarget();
dragstartanglexy = General.Map.VisualCamera.AngleXY;
dragstartanglez = General.Map.VisualCamera.AngleZ;
dragorigin = pickintersect;
startoffsetx = GetTextureOffset().X;
startoffsety = GetTextureOffset().Y;
prevoffsetx = GetTextureOffset().X;
prevoffsety = GetTextureOffset().Y;
}