private static void SetAbility(PKM pk, IBattleTemplate set, AbilityPermission preference)
{
if (pk.Ability != set.Ability && set.Ability != -1)
{
pk.SetAbility(set.Ability);
}
if (preference > 0)
{
var abilities = pk.PersonalInfo.Abilities;
// Set unspecified abilities
if (set.Ability == -1)
{
pk.RefreshAbility(preference.GetSingleValue());
if (pk is PK5 pk5 && preference == AbilityPermission.OnlyHidden)
{
pk5.HiddenAbility = true;
}
}
// Set preferred ability number if applicable
if (abilities[preference.GetSingleValue()] == set.Ability)
{
pk.AbilityNumber = (int)preference;
}
// 3/4/5 transferred to 6+ will have ability 1 if both abilitynum 1 and 2 are the same. Capsule cant convert 1 -> 2 if the abilities arnt unique
if (pk.Format >= 6 && pk.Generation is 3 or 4 or 5 && pk.AbilityNumber != 4 && abilities[0] == abilities[1])
{
pk.AbilityNumber = 1;
}
if (pk is G3PKM && abilities[0] == abilities[1])
{
pk.AbilityNumber = 1;
}
}
}
public static void IsFixedAbility(AbilityPermission value, bool expect, int zeroIndex)
{
var result = value.IsSingleValue(out var index);
result.Should().Be(expect);
if (result)
{
index.Should().Be(zeroIndex);
}
}
public static void ApplyDetails(PKM pk, EncounterCriteria criteria,
Shiny shiny = Shiny.FixedValue,
int flawless = -1,
AbilityPermission ability = AbilityPermission.Any12)
{
if (shiny == Shiny.FixedValue)
{
shiny = criteria.Shiny is Shiny.Random or Shiny.Never ? Shiny.Never : Shiny.Always;
}
if (flawless == -1)
{
flawless = 0;
}
int ctr = 0;
const int maxAttempts = 50_000;
var rnd = Util.Rand;
do
{
ulong s0 = rnd.Rand64();
ulong s1 = rnd.Rand64();
var xors = new XorShift128(s0, s1);
if (TryApplyFromSeed(pk, criteria, shiny, flawless, xors, ability))
{
return;
}
} while (++ctr != maxAttempts);
{
ulong s0 = rnd.Rand64();
ulong s1 = rnd.Rand64();
var xors = new XorShift128(s0, s1);
TryApplyFromSeed(pk, EncounterCriteria.Unrestricted, shiny, flawless, xors, ability);
}
}
private static int RemapAbilityToParam(AbilityPermission a) => a switch
{
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);
}
public static int GetSingleValue(this AbilityPermission value) => value switch
{
/// <summary>
/// Set Nature and Ability of the pokemon
/// </summary>
/// <param name="pk">PKM to modify</param>
/// <param name="set">Showdown Set to refer</param>
/// <param name="enc">Encounter to reference</param>
/// <param name="preference">Ability index (1/2/4) preferred; <= 0 for any</param>
public static void SetNatureAbility(this PKM pk, IBattleTemplate set, IEncounterable enc, AbilityPermission preference = AbilityPermission.Any12H)
{
SetNature(pk, set, enc);
SetAbility(pk, set, preference);
}
public static void IsHiddenPossible(AbilityPermission value, bool expect) => value.CanBeHidden().Should().Be(expect);