public static bool TryApplyFromSeed(PKM pk, EncounterCriteria criteria, Shiny shiny, int flawless, XorShift128 xors, AbilityPermission ability)
{
// Encryption Constant
pk.EncryptionConstant = xors.NextUInt();
// PID
var fakeTID = xors.NextUInt(); // fakeTID
var pid = xors.NextUInt();
pid = GetRevisedPID(fakeTID, pid, pk);
if (shiny == Shiny.Never)
{
if (GetIsShiny(pk.TID, pk.SID, pid))
{
return(false);
}
}
else if (shiny != Shiny.Random)
{
if (!GetIsShiny(pk.TID, pk.SID, pid))
{
return(false);
}
if (shiny == Shiny.AlwaysSquare && pk.ShinyXor != 0)
{
return(false);
}
if (shiny == Shiny.AlwaysStar && pk.ShinyXor == 0)
{
return(false);
}
}
pk.PID = pid;
// Check IVs: Create flawless IVs at random indexes, then the random IVs for not flawless.
Span <int> ivs = stackalloc[] { UNSET, UNSET, UNSET, UNSET, UNSET, UNSET };
const int MAX = 31;
var determined = 0;
while (determined < flawless)
{
var idx = (int)xors.NextUInt(6);
if (ivs[idx] != UNSET)
{
continue;
}
ivs[idx] = 31;
determined++;
}
for (var i = 0; i < ivs.Length; i++)
{
if (ivs[i] == UNSET)
{
ivs[i] = xors.NextInt(0, MAX + 1);
}
}
if (!criteria.IsIVsCompatible(ivs, 8))
{
return(false);
}
pk.IV_HP = ivs[0];
pk.IV_ATK = ivs[1];
pk.IV_DEF = ivs[2];
pk.IV_SPA = ivs[3];
pk.IV_SPD = ivs[4];
pk.IV_SPE = ivs[5];
// Ability
var n = ability switch
{
AbilityPermission.Any12 => (int)xors.NextUInt(2),
AbilityPermission.Any12H => (int)xors.NextUInt(3),
_ => (int)ability >> 1,
};
pk.SetAbilityIndex(n);
// Gender (skip this if gender is fixed)
var genderRatio = PersonalTable.BDSP.GetFormEntry(pk.Species, pk.Form).Gender;
if (genderRatio == PersonalInfo.RatioMagicGenderless)
{
pk.Gender = 2;
}
else if (genderRatio == PersonalInfo.RatioMagicMale)
{
pk.Gender = 0;
}
else if (genderRatio == PersonalInfo.RatioMagicFemale)
{
pk.Gender = 1;
}
else
{
var next = (((int)xors.NextUInt(253) + 1 < genderRatio) ? 1 : 0);
if (criteria.Gender is 0 or 1 && next != criteria.Gender)
{
return(false);
}
pk.Gender = next;
}
if (criteria.Nature is Nature.Random)
{
pk.Nature = (int)xors.NextUInt(25);
}
else // Skip nature, assuming Synchronize
{
pk.Nature = (int)criteria.Nature;
}
pk.StatNature = pk.Nature;
// Remainder
var scale = (IScaledSize)pk;
scale.HeightScalar = (byte)((int)xors.NextUInt(0x81) + (int)xors.NextUInt(0x80));
scale.WeightScalar = (byte)((int)xors.NextUInt(0x81) + (int)xors.NextUInt(0x80));
// Item, don't care
return(true);
}
private static bool TryApplyFromSeed(PKM pk, EncounterCriteria criteria, Shiny shiny, int flawless, uint seed)
{
var xoro = new Xoroshiro128Plus(seed);
// Encryption Constant
pk.EncryptionConstant = (uint)xoro.NextInt(uint.MaxValue);
// PID
var pid = (uint)xoro.NextInt(uint.MaxValue);
if (shiny == Shiny.Never)
{
if (GetIsShiny(pk.TID, pk.SID, pid))
{
pid ^= 0x1000_0000;
}
}
else if (shiny != Shiny.Random)
{
if (!GetIsShiny(pk.TID, pk.SID, pid))
{
pid = GetShinyPID(pk.TID, pk.SID, pid, 0);
}
if (shiny == Shiny.AlwaysSquare && pk.ShinyXor != 0)
{
return(false);
}
if (shiny == Shiny.AlwaysStar && pk.ShinyXor == 0)
{
return(false);
}
}
pk.PID = pid;
// IVs
Span <int> ivs = stackalloc[] { UNSET, UNSET, UNSET, UNSET, UNSET, UNSET };
const int MAX = 31;
for (int i = 0; i < flawless; i++)
{
int index;
do
{
index = (int)xoro.NextInt(6);
}while (ivs[index] != UNSET);
ivs[index] = MAX;
}
for (int i = 0; i < ivs.Length; i++)
{
if (ivs[i] == UNSET)
{
ivs[i] = (int)xoro.NextInt(32);
}
}
if (!criteria.IsIVsCompatible(ivs, 8))
{
return(false);
}
pk.IV_HP = ivs[0];
pk.IV_ATK = ivs[1];
pk.IV_DEF = ivs[2];
pk.IV_SPA = ivs[3];
pk.IV_SPD = ivs[4];
pk.IV_SPE = ivs[5];
// Remainder
var scale = (IScaledSize)pk;
scale.HeightScalar = (byte)((int)xoro.NextInt(0x81) + (int)xoro.NextInt(0x80));
scale.WeightScalar = (byte)((int)xoro.NextInt(0x81) + (int)xoro.NextInt(0x80));
return(true);
}
private static bool TryApplyFromSeed(PKM pk, EncounterCriteria criteria, Shiny shiny, int flawless, uint seed)
{
var xoro = new Xoroshiro128Plus8b(seed);
// Encryption Constant
pk.EncryptionConstant = seed;
// PID
var fakeTID = xoro.NextUInt(); // fakeTID
var pid = xoro.NextUInt();
pid = GetRevisedPID(fakeTID, pid, pk);
if (shiny == Shiny.Never)
{
if (GetIsShiny(pk.TID, pk.SID, pid))
{
return(false);
}
}
else if (shiny != Shiny.Random)
{
if (!GetIsShiny(pk.TID, pk.SID, pid))
{
return(false);
}
if (shiny == Shiny.AlwaysSquare && pk.ShinyXor != 0)
{
return(false);
}
if (shiny == Shiny.AlwaysStar && pk.ShinyXor == 0)
{
return(false);
}
}
pk.PID = pid;
// Check IVs: Create flawless IVs at random indexes, then the random IVs for not flawless.
Span <int> ivs = stackalloc [] { UNSET, UNSET, UNSET, UNSET, UNSET, UNSET };
const int MAX = 31;
var determined = 0;
while (determined < flawless)
{
var idx = (int)xoro.NextUInt(6);
if (ivs[idx] != UNSET)
{
continue;
}
ivs[idx] = 31;
determined++;
}
for (var i = 0; i < ivs.Length; i++)
{
if (ivs[i] == UNSET)
{
ivs[i] = (int)xoro.NextUInt(MAX + 1);
}
}
if (!criteria.IsIVsCompatible(ivs, 8))
{
return(false);
}
pk.IV_HP = ivs[0];
pk.IV_ATK = ivs[1];
pk.IV_DEF = ivs[2];
pk.IV_SPA = ivs[3];
pk.IV_SPD = ivs[4];
pk.IV_SPE = ivs[5];
// Ability
pk.SetAbilityIndex((int)xoro.NextUInt(2));
// Remainder
var scale = (IScaledSize)pk;
scale.HeightScalar = (int)xoro.NextUInt(0x81) + (int)xoro.NextUInt(0x80);
scale.WeightScalar = (int)xoro.NextUInt(0x81) + (int)xoro.NextUInt(0x80);
return(true);
}