public override void Preparation(MHEngine engine)
{
if (AvailabilityStatus) return; // Already prepared
m_nBoxWidth = m_nOriginalBoxWidth;
m_nBoxHeight = m_nOriginalBoxHeight;
m_nPosX = m_nOriginalPosX;
m_nPosY = m_nOriginalPosY;
m_PaletteRef.Copy(m_OriginalPaletteRef);
// Add a reference to this to the display stack.
engine.AddToDisplayStack(this);
base.Preparation(engine);
}