// To fuse piece type.
public static PieceType operator +(PieceType type1, PieceType type2)
{
return(FusionRule.GetFusionType(type1, type2));
}
public static bool CanFuse(PieceInfo info1, PieceInfo info2)
{
return(FusionRule.CanFuse(info1.PieceType, info2.PieceType));
}