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PKHeX/PKHeX.Core/Legality/Verifiers/BallVerifier.cs
Kurt 09089da14e Use more expression return style 
Reduces indentation & bracketing, a bit more concise
2021-01-01 17:08:49 -08:00

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C#
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using System.Collections.Generic;
using static PKHeX.Core.LegalityCheckStrings;
using static PKHeX.Core.Ball;
namespace PKHeX.Core
{
/// <summary>
/// Verifies the <see cref="PKM.Ball"/> value.
/// </summary>
public sealed class BallVerifier : Verifier
{
protected override CheckIdentifier Identifier => CheckIdentifier.Ball;
private CheckResult NONE => GetInvalid(LBallNone);
public override void Verify(LegalityAnalysis data)
{
if (data.pkm.Format <= 2)
return; // no ball info saved
var result = VerifyBall(data);
data.AddLine(result);
}
private CheckResult VerifyBall(LegalityAnalysis data)
{
var EncounterMatch = data.EncounterMatch;
var Info = data.Info;
// Fixed ball cases -- can be only one ball ever
switch (EncounterMatch)
{
case MysteryGift g:
return VerifyBallMysteryGift(data, g);
case EncounterTrade t:
return VerifyBallEquals(data, t.Ball);
case EncounterStatic {Gift: true} s:
return VerifyBallEquals(data, s.Ball);
case EncounterSlot8GO: // Already a strict match
return GetResult(true);
}
// Capture / Inherit cases -- can be one of many balls
var pkm = data.pkm;
if (pkm.Species == (int)Species.Shedinja && data.EncounterMatch.Species != (int)Species.Shedinja) // Shedinja. For gen3, copy the ball from Nincada
{
// Only Gen3 origin Shedinja can copy the wild ball.
// Evolution chains will indicate if it could have existed as Shedinja in Gen3.
// The special move verifier has a similar check!
if (Info.Generation != 3 || Info.EvoChainsAllGens[3].Count != 2)
return VerifyBallEquals(data, (int)Poke); // Pokeball Only
}
if (pkm.Ball == (int)Heavy && Legal.AlolanCaptureNoHeavyBall.Contains(EncounterMatch.Species) && !EncounterMatch.EggEncounter && pkm.SM)
return GetInvalid(LBallHeavy); // Heavy Ball, can inherit if from egg (USUM fixed catch rate calc)
return EncounterMatch switch
{
EncounterStatic e => VerifyBallStatic(data, e),
EncounterSlot w => VerifyBallWild(data, w),
EncounterEgg => VerifyBallEgg(data),
EncounterInvalid => VerifyBallEquals(data, pkm.Ball), // ignore ball, pass whatever
_ => VerifyBallEquals(data, (int)Poke)
};
}
private CheckResult VerifyBallMysteryGift(LegalityAnalysis data, MysteryGift g)
{
if (g.Generation == 4 && g.Species == (int)Species.Manaphy && g.Ball == 0) // there is no ball data in Manaphy Mystery Gift from Gen4
return VerifyBallEquals(data, (int)Poke); // Pokeball
return VerifyBallEquals(data, g.Ball);
}
private CheckResult VerifyBallStatic(LegalityAnalysis data, EncounterStatic s)
{
if (s.Location == 75 && s.Generation == 5) // Entree Forest (Dream World)
return VerifyBallEquals(data, Legal.DreamWorldBalls);
return VerifyBallEquals(data, Legal.GetWildBalls(data.Info.Generation, data.Info.Game));
}
private CheckResult VerifyBallWild(LegalityAnalysis data, EncounterSlot w)
{
var req = w.Area.Type.GetRequiredBallValueWild(w.Generation, w.Location);
if (req != None)
return VerifyBallEquals(data, (int) req);
return VerifyBallEquals(data, Legal.GetWildBalls(data.Info.Generation, data.Info.Game));
}
private CheckResult VerifyBallEgg(LegalityAnalysis data)
{
var pkm = data.pkm;
if (data.Info.Generation < 6) // No inheriting Balls
return VerifyBallEquals(data, (int)Poke); // Must be Pokéball -- no ball inheritance.
return pkm.Ball switch
{
(int)Poke => GetValid(LBallEnc), // Poké Ball
(int)Master => GetInvalid(LBallEggMaster), // Master Ball
(int)Cherish => GetInvalid(LBallEggCherish), // Cherish Ball
_ => VerifyBallInherited(data)
};
}
private CheckResult VerifyBallInherited(LegalityAnalysis data) => data.Info.Generation switch
{
6 => VerifyBallEggGen6(data), // Gen6 Inheritance Rules
7 => VerifyBallEggGen7(data), // Gen7 Inheritance Rules
8 => VerifyBallEggGen8(data),
_ => NONE
};
private CheckResult VerifyBallEggGen6(LegalityAnalysis data)
{
var pkm = data.pkm;
int species = data.EncounterMatch.Species;
if (pkm.Gender == 2 || Legal.BreedMaleOnly6.Contains(species)) // Genderless
return VerifyBallEquals(data, (int)Poke); // Must be Pokéball as ball can only pass via mother (not Ditto!)
Ball ball = (Ball)pkm.Ball;
if (ball == Safari) // Safari Ball
{
if (!Legal.Inherit_Safari.Contains(species))
return GetInvalid(LBallSpecies);
if (IsHiddenAndNotPossible(pkm))
return GetInvalid(LBallAbility);
return GetValid(LBallSpeciesPass);
}
if (ball.IsApricornBall()) // Apricorn Ball
{
if (!Legal.Inherit_Apricorn6.Contains(species))
return GetInvalid(LBallSpecies);
if (IsHiddenAndNotPossible(pkm))
return GetInvalid(LBallAbility);
return GetValid(LBallSpeciesPass);
}
if (ball == Sport) // Sport Ball
{
if (!Legal.Inherit_Sport.Contains(species))
return GetInvalid(LBallSpecies);
if (IsHiddenAndNotPossible(pkm))
return GetInvalid(LBallAbility);
return GetValid(LBallSpeciesPass);
}
if (ball == Dream) // Dream Ball
{
if (Legal.Ban_DreamHidden.Contains(species) && IsHiddenAndNotPossible(pkm))
return GetInvalid(LBallAbility);
if (Legal.Inherit_Dream.Contains(species))
return GetValid(LBallSpeciesPass);
return GetInvalid(LBallSpecies);
}
if (Dusk <= ball && ball <= Quick) // Dusk Heal Quick
{
if (!Legal.Ban_Gen4Ball_6.Contains(species))
return GetValid(LBallSpeciesPass);
return GetInvalid(LBallSpecies);
}
if (Ultra <= ball && ball <= Premier) // Don't worry, Safari was already checked.
{
if (Legal.Ban_Gen3Ball.Contains(species))
return GetInvalid(LBallSpecies);
if (Legal.Ban_Gen3BallHidden.Contains(pkm.SpecForm) && IsHiddenAndNotPossible(pkm))
return GetInvalid(LBallAbility);
return GetValid(LBallSpeciesPass);
}
if (species > 650 && species != 700) // Sylveon
{
if (Legal.WildPokeballs6.Contains(pkm.Ball))
return GetValid(LBallSpeciesPass);
return GetInvalid(LBallSpecies);
}
if (ball >= Dream)
return GetInvalid(LBallUnavailable);
return NONE;
}
private CheckResult VerifyBallEggGen7(LegalityAnalysis data)
{
var pkm = data.pkm;
int species = data.EncounterMatch.Species;
if (722 <= species && species <= 730) // G7 Starters
return VerifyBallEquals(data, (int)Poke);
Ball ball = (Ball)pkm.Ball;
if (ball == Safari)
{
if (!(Legal.Inherit_Safari.Contains(species) || Legal.Inherit_SafariMale.Contains(species)))
return GetInvalid(LBallSpecies);
if (Legal.Ban_SafariBallHidden_7.Contains(species) && IsHiddenAndNotPossible(pkm))
return GetInvalid(LBallAbility);
return GetValid(LBallSpeciesPass);
}
if (ball.IsApricornBall()) // Apricorn Ball
{
if (!Legal.Inherit_Apricorn7.Contains(species))
return GetInvalid(LBallSpecies);
if (Legal.Ban_NoHidden7Apricorn.Contains(species | pkm.Form << 11) && IsHiddenAndNotPossible(pkm))
return GetInvalid(LBallAbility);
return GetValid(LBallSpeciesPass);
}
if (ball == Sport) // Sport Ball
{
if (!Legal.Inherit_Sport.Contains(species))
return GetInvalid(LBallSpecies);
if ((species is (int)Species.Volbeat or (int)Species.Illumise) && IsHiddenAndNotPossible(pkm)) // Volbeat/Illumise
return GetInvalid(LBallAbility);
return GetValid(LBallSpeciesPass);
}
if (ball == Dream) // Dream Ball
{
if (Legal.Inherit_Dream.Contains(species) || Legal.Inherit_DreamMale.Contains(species))
return GetValid(LBallSpeciesPass);
return GetInvalid(LBallSpecies);
}
if (Dusk <= ball && ball <= Quick) // Dusk Heal Quick
{
if (!Legal.Ban_Gen4Ball_7.Contains(species))
return GetValid(LBallSpeciesPass);
return GetInvalid(LBallSpecies);
}
if (Ultra <= ball && ball <= Premier) // Don't worry, Safari was already checked.
{
if (!Legal.Ban_Gen3Ball_7.Contains(species))
return GetValid(LBallSpeciesPass);
return GetInvalid(LBallSpecies);
}
if (ball == Beast)
{
if (species == (int)Species.Flabébé && pkm.Form == 3 && IsHiddenAndNotPossible(pkm))
return GetInvalid(LBallAbility); // Can't obtain Flabébé-Blue with Hidden Ability in wild
if (species == (int)Species.Voltorb && IsHiddenAndNotPossible(pkm))
return GetInvalid(LBallAbility); // Can't obtain with Hidden Ability in wild (can only breed with Ditto)
if (((int)Species.Pikipek <= species && species <= (int)Species.Kommoo) || (Legal.AlolanCaptureOffspring.Contains(species) && !Legal.PastGenAlolanNativesUncapturable.Contains(species)))
return GetValid(LBallSpeciesPass);
if (Legal.PastGenAlolanScans.Contains(species))
return GetValid(LBallSpeciesPass);
// next statement catches all new alolans
}
if (species > (int)Species.Volcanion)
return VerifyBallEquals(data, Legal.WildPokeballs7);
if (ball > Beast)
return GetInvalid(LBallUnavailable);
return NONE;
}
private CheckResult VerifyBallEggGen8(LegalityAnalysis data)
{
var pkm = data.pkm;
int species = data.EncounterMatch.Species;
if (722 <= species && species <= 730) // G7 Starters
return VerifyBallEquals(data, (int)Poke);
if ((int)Species.Grookey <= species && species <= (int)Species.Inteleon) // G8 Starters
return VerifyBallEquals(data, (int)Poke);
if (IsGalarCatchAndBreed(species))
{
if (Legal.WildPokeballs8.Contains(pkm.Ball))
return GetValid(LBallSpeciesPass);
if (species >= (int)Species.Grookey)
return GetInvalid(LBallSpecies);
}
Ball ball = (Ball)pkm.Ball;
if (ball == Safari)
{
if (!(Legal.Inherit_Safari.Contains(species) || Legal.Inherit_SafariMale.Contains(species)))
return GetInvalid(LBallSpecies);
if (Legal.Ban_SafariBallHidden_7.Contains(species) && IsHiddenAndNotPossible(pkm))
return GetInvalid(LBallAbility);
return GetValid(LBallSpeciesPass);
}
if (ball.IsApricornBall()) // Apricorn Ball
{
if (!Legal.Inherit_Apricorn7.Contains(species))
return GetInvalid(LBallSpecies);
if (Legal.Ban_NoHidden8Apricorn.Contains(species | pkm.Form << 11) && IsHiddenAndNotPossible(pkm)) // lineage is 3->2->origin
return GetInvalid(LBallAbility);
return GetValid(LBallSpeciesPass);
}
if (ball == Sport) // Sport Ball
{
if (!Legal.Inherit_Sport.Contains(species))
return GetInvalid(LBallSpecies);
if ((species is (int)Species.Volbeat or (int)Species.Illumise) && IsHiddenAndNotPossible(pkm)) // Volbeat/Illumise
return GetInvalid(LBallAbility);
return GetValid(LBallSpeciesPass);
}
if (ball == Dream) // Dream Ball
{
if (Legal.Inherit_Dream.Contains(species) || Legal.Inherit_DreamMale.Contains(species))
return GetValid(LBallSpeciesPass);
return GetInvalid(LBallSpecies);
}
if (Dusk <= ball && ball <= Quick) // Dusk Heal Quick
{
if (!Legal.Ban_Gen4Ball_7.Contains(species))
return GetValid(LBallSpeciesPass);
return GetInvalid(LBallSpecies);
}
if (Ultra <= ball && ball <= Premier) // Don't worry, Safari was already checked.
{
if (!Legal.Ban_Gen3Ball_7.Contains(species))
return GetValid(LBallSpeciesPass);
return GetInvalid(LBallSpecies);
}
if (ball == Beast)
{
if (species == (int)Species.Flabébé && pkm.Form == 3 && IsHiddenAndNotPossible(pkm))
return GetInvalid(LBallAbility); // Can't obtain Flabébé-Blue with Hidden Ability in wild
if (((int)Species.Pikipek <= species && species <= (int)Species.Kommoo) || (Legal.AlolanCaptureOffspring.Contains(species) && !Legal.PastGenAlolanNativesUncapturable.Contains(species)))
return GetValid(LBallSpeciesPass);
if (Legal.PastGenAlolanScans.Contains(species))
return GetValid(LBallSpeciesPass);
// next statement catches all new alolans
}
if (species > Legal.MaxSpeciesID_7_USUM)
return VerifyBallEquals(data, Legal.WildPokeballs8);
if (species > (int)Species.Volcanion)
return VerifyBallEquals(data, Legal.WildPokeballs7);
if (ball > Beast)
return GetInvalid(LBallUnavailable);
return NONE;
}
private static bool IsHiddenAndNotPossible(PKM pkm)
{
if (pkm.AbilityNumber != 4)
return false;
return !AbilityVerifier.CanAbilityPatch(pkm.Format, pkm.PersonalInfo.Abilities, pkm.Species);
}
private static bool IsGalarCatchAndBreed(int species)
{
if ((int)Species.Grookey <= species && species <= (int)Species.Inteleon) // starter
return false;
// Everything breed-able that is in the Galar Dex can be captured in-game.
var pt = PersonalTable.SWSH;
var pi = (PersonalInfoSWSH) pt.GetFormEntry(species, 0);
if (pi.IsInDex)
return true;
// Foreign Captures
if ((int)Species.Treecko <= species && species <= (int)Species.Swampert) // Dynamax Adventures
return true;
return false;
}
private CheckResult VerifyBallEquals(LegalityAnalysis data, int ball) => GetResult(ball == data.pkm.Ball);
private CheckResult VerifyBallEquals(LegalityAnalysis data, HashSet<int> balls) => GetResult(balls.Contains(data.pkm.Ball));
private CheckResult VerifyBallEquals(LegalityAnalysis data, ICollection<int> balls) => GetResult(balls.Contains(data.pkm.Ball));
private CheckResult GetResult(bool valid) => valid ? GetValid(LBallEnc) : GetInvalid(LBallEncMismatch);
}
}
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