public static EggSource34[] Validate(int species, GameVersion version, ReadOnlySpan <int> moves, out bool valid)
{
var count = moves.IndexOf(0);
if (count == 0)
{
valid = false; // empty moveset
return(Array.Empty <EggSource34>());
}
if (count == -1)
{
count = moves.Length;
}
var learn = GameData.GetLearnsets(version);
var table = GameData.GetPersonal(version);
var learnset = learn[species];
var pi = table[species];
var egg = Legal.EggMovesRS[species].Moves;
var actual = new EggSource34[count];
Span <byte> possible = stackalloc byte[count];
var value = new BreedInfo <EggSource34>(actual, possible, learnset, moves, level);
if (species is (int)Species.Pichu && moves[count - 1] is (int)Move.VoltTackle && version == GameVersion.E)
{
actual[--count] = VoltTackle;
}
if (count == 0)
{
valid = VerifyBaseMoves(value);
}
else
{
bool inherit = Breeding.GetCanInheritMoves(species);
MarkMovesForOrigin(value, egg, count, inherit, pi);
valid = RecurseMovesForOrigin(value, count - 1);
}
if (!valid)
{
CleanResult(actual, possible);
}
return(value.Actual);
}
private static bool RecurseMovesForOrigin(BreedInfo <EggSource34> info, int start, EggSource34 type = Max - 1)
{
int i = start;
do
{
var unpeel = type - 1;
if (unpeel != 0 && RecurseMovesForOrigin(info, i, unpeel))
{
return(true);
}
var permit = info.Possible[i];
if ((permit & (1 << (int)type)) == 0)
{
return(false);
}
info.Actual[i] = type;
} while (--i >= 0);
return(VerifyBaseMoves(info));
}
