private CheckResult VerifyForm(LegalityAnalysis data)
{
var pkm = data.pkm;
var PersonalInfo = data.PersonalInfo;
int count = PersonalInfo.FormCount;
var form = pkm.Form;
if (count <= 1 && form == 0)
{
return(VALID); // no forms to check
}
var species = pkm.Species;
var enc = data.EncounterMatch;
var Info = data.Info;
if (!PersonalInfo.IsFormWithinRange(form) && !FormInfo.IsValidOutOfBoundsForm(species, form, Info.Generation))
{
return(GetInvalid(string.Format(LFormInvalidRange, count - 1, form)));
}
switch (enc)
{
case EncounterSlot w when w.Area.Type == SlotType.FriendSafari:
VerifyFormFriendSafari(data);
break;
case EncounterEgg e when FormInfo.IsTotemForm(species, form, e.Generation):
return(GetInvalid(LFormInvalidGame));
}
switch ((Species)species)
{
case Pikachu when Info.Generation == 6: // Cosplay
bool isStatic = enc is EncounterStatic;
bool validCosplay = form == (isStatic ? enc.Form : 0);
if (!validCosplay)
{
return(GetInvalid(isStatic ? LFormPikachuCosplayInvalid : LFormPikachuCosplay));
}
break;
case Pikachu when Info.Generation >= 7: // Cap
bool validCap = form == (enc is EncounterInvalid or EncounterEgg ? 0 : enc.Form);
if (!validCap)
{
bool gift = enc is MysteryGift g && g.Form != form;
var msg = gift ? LFormPikachuEventInvalid : LFormInvalidGame;
return(GetInvalid(msg));
}
break;
case Unown when Info.Generation == 2 && form >= 26:
return(GetInvalid(string.Format(LFormInvalidRange, "Z", form == 26 ? "!" : "?")));
case Giratina when form == 1 ^ pkm.HeldItem == 112: // Giratina, Origin form only with Griseous Orb
return(GetInvalid(LFormItemInvalid));
case Arceus:
{
int arceus = GetArceusFormFromHeldItem(pkm.HeldItem, pkm.Format);
return(arceus != form?GetInvalid(LFormItemInvalid) : GetValid(LFormItem));
}
case Keldeo when pkm.Format < 8 && enc.Generation != 5:
// can mismatch in gen5 via BW tutor and transfer up
// can mismatch in gen8+ as the form activates in battle when knowing the move; outside of battle can be either state.
bool hasSword = pkm.HasMove((int)Move.SecretSword);
bool isSword = pkm.Form == 1;
if (isSword != hasSword)
{
return(GetInvalid(LMoveKeldeoMismatch));
}
break;
case Genesect:
{
int genesect = GetGenesectFormFromHeldItem(pkm.HeldItem);
return(genesect != form?GetInvalid(LFormItemInvalid) : GetValid(LFormItem));
}
case Greninja:
if (form > 1) // Ash Battle Bond active
{
return(GetInvalid(LFormBattle));
}
if (form != 0 && enc is not MysteryGift) // Formes are not breedable, MysteryGift already checked
{
return(GetInvalid(string.Format(LFormInvalidRange, 0, form)));
}
break;
case Scatterbug or Spewpa:
if (form > 17) // Fancy & Pokéball
{
return(GetInvalid(LFormVivillonEventPre));
}
if (pkm is not IRegionOrigin tr)
{
break;
}
if (!Vivillon3DS.IsPatternValid(form, (byte)tr.Country, (byte)tr.Region))
{
data.AddLine(Get(LFormVivillonInvalid, Severity.Fishy));
}
break;
case Vivillon:
if (form > 17) // Fancy & Pokéball
{
if (enc is not MysteryGift)
{
return(GetInvalid(LFormVivillonInvalid));
}
return(GetValid(LFormVivillon));
}
if (pkm is not IRegionOrigin trv)
{
break;
}
if (!Vivillon3DS.IsPatternValid(form, (byte)trv.Country, (byte)trv.Region))
{
data.AddLine(Get(LFormVivillonInvalid, Severity.Fishy));
}
break;
case Floette when form == 5: // Floette Eternal Flower -- Never Released
if (enc is not MysteryGift)
{
return(GetInvalid(LFormEternalInvalid));
}
return(GetValid(LFormEternal));
case Meowstic when form != pkm.Gender:
return(GetInvalid(LGenderInvalidNone));
case Silvally:
{
int silvally = GetSilvallyFormFromHeldItem(pkm.HeldItem);
return(silvally != form?GetInvalid(LFormItemInvalid) : GetValid(LFormItem));
}
// Form doesn't exist in SM; cannot originate from that game.
case Lillipup when enc.Generation == 7 && form == 1 && pkm.SM:
case Lycanroc when enc.Generation == 7 && form == 2 && pkm.SM:
return(GetInvalid(LFormInvalidGame));
// Toxel encounters have already been checked for the nature-specific evolution criteria.
case Toxtricity when enc.Species == (int)Toxtricity:
{
// The game enforces the Nature for Toxtricity encounters too!
if (pkm.Form != EvolutionMethod.GetAmpLowKeyResult(pkm.Nature))
{
return(GetInvalid(LFormInvalidNature));
}
break;
}
// Impossible Egg forms
case Rotom when pkm.IsEgg && form != 0:
case Furfrou when pkm.IsEgg && form != 0:
return(GetInvalid(LEggSpecies));
// Party Only Forms
case Shaymin:
case Furfrou:
case Hoopa:
if (form != 0 && pkm.Box > -1 && pkm.Format <= 6) // has form but stored in box
{
return(GetInvalid(LFormParty));
}
break;
}
var format = pkm.Format;
if (FormInfo.IsBattleOnlyForm(species, form, format))
{
return(GetInvalid(LFormBattle));
}
if (form == 0)
{
return(VALID);
}
// everything below here is not Form 0, so it has a form.
if (format >= 7 && Info.Generation < 7)
{
if (species == 25 || Legal.AlolanOriginForms.Contains(species) || Legal.AlolanVariantEvolutions12.Contains(enc.Species))
{
return(GetInvalid(LFormInvalidGame));
}
}
if (format >= 8 && Info.Generation < 8)
{
var orig = enc.Species;
if (Legal.GalarOriginForms.Contains(species) || Legal.GalarVariantFormEvolutions.Contains(orig))
{
if (species == (int)Meowth && enc.Form != 2)
{
// We're okay here. There's also Alolan Meowth...
}
else if (((Species)orig is MrMime or MimeJr) && pkm.CurrentLevel > enc.LevelMin && Info.Generation >= 4)
{
// We're okay with a Mime Jr. that has evolved via level up.
}
else if (enc.Version != GameVersion.GO)
{
return(GetInvalid(LFormInvalidGame));
}
}
}
public static IEnumerable <EncounterEgg> GenerateEggs(PKM pkm, IReadOnlyList <EvoCriteria> chain, int generation, bool all = false)
{
System.Diagnostics.Debug.Assert(generation >= 3); // if generating Gen2 eggs, use the other generator.
int currentSpecies = pkm.Species;
if (!Breeding.CanHatchAsEgg(currentSpecies))
{
yield break;
}
var currentForm = pkm.Form;
if (!Breeding.CanHatchAsEgg(currentSpecies, currentForm, generation))
{
yield break; // can't originate from eggs
}
// version is a true indicator for all generation 3-5 origins
var ver = (GameVersion)pkm.Version;
if (!Breeding.CanGameGenerateEggs(ver))
{
yield break;
}
int lvl = EggStateLegality.GetEggLevel(generation);
int max = GetMaxSpeciesOrigin(generation);
var(species, form) = GetBaseSpecies(chain, 0);
if ((uint)species <= max)
{
// NOTE: THE SPLIT-BREED SECTION OF CODE SHOULD BE EXACTLY THE SAME AS THE BELOW SECTION
if (FormInfo.IsBattleOnlyForm(species, form, generation))
{
form = FormInfo.GetOutOfBattleForm(species, form, generation);
}
if (Breeding.CanHatchAsEgg(species, form, ver))
{
yield return(new EncounterEgg(species, form, lvl, generation, ver));
if (generation > 5 && (pkm.WasTradedEgg || all) && HasOtherGamePair(ver))
{
yield return(new EncounterEgg(species, form, lvl, generation, GetOtherTradePair(ver)));
}
}
}
if (!Breeding.GetSplitBreedGeneration(generation).Contains(currentSpecies))
{
yield break; // no other possible species
}
var otherSplit = species;
(species, form) = GetBaseSpecies(chain, 1);
if ((uint)species == otherSplit)
{
yield break;
}
if (species <= max)
{
// NOTE: THIS SECTION OF CODE SHOULD BE EXACTLY THE SAME AS THE ABOVE SECTION
if (FormInfo.IsBattleOnlyForm(species, form, generation))
{
form = FormInfo.GetOutOfBattleForm(species, form, generation);
}
if (Breeding.CanHatchAsEgg(species, form, ver))
{
yield return(new EncounterEgg(species, form, lvl, generation, ver));
if (generation > 5 && (pkm.WasTradedEgg || all) && HasOtherGamePair(ver))
{
yield return(new EncounterEgg(species, form, lvl, generation, GetOtherTradePair(ver)));
}
}
}
}