private void SetIsActive(int ofs, int x, int y, bool value) => FlagUtil.SetFlag(SAV.Data, ofs, (y * FieldItemLayer.FieldItemWidth) + x, value);
private bool IsActive(int ofs, int x, int y) => FlagUtil.GetFlag(SAV.Data, ofs, (y * FieldItemLayer.FieldItemWidth) + x);
private bool IsActive(int ofs, int x, int y) => FlagUtil.GetFlag(SAV.Data, ofs, (y * 224) + x);