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Fix pokerus to allow evolved untransferrables
PLA sneasel -> transfer, catch virus -> PLA, evolve => was flagged. Need to check the encounter species-form, not the current species-form. List all the species-form that are of consideration. Wyrdeer, Kleavor, Ursaluna, Sneasler, Overqwil, Basculegion
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3 changed files with 42 additions and 16 deletions
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@ -16,51 +16,77 @@ public static class Pokerus
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/// Checks if any Pokérus values are possible to have on the input entity.
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/// </summary>
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/// <param name="pk">Entity to check</param>
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/// <param name="enc">Encounter template matched to</param>
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/// <returns>True if Pokérus exists in the game format, or can be transmitted to the entity via another game.</returns>
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public static bool IsObtainable(PKM pk) => pk switch
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public static bool IsObtainable(PKM pk, ISpeciesForm enc) => pk switch
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{
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PA8 pa8 => HasVisitedAnother(pa8),
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PB7 => false,
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PK9 => false,
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PA8 pa8 => HasVisitedAnother(pa8, enc),
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PB7 => false, // Does not exist in game.
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PK9 => false, // Does not exist in game, does not get copied over via HOME.
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_ => true,
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};
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private static bool HasVisitedAnother(PA8 pk)
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private static bool HasVisitedAnother(PA8 pk, ISpeciesForm enc)
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{
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if (pk.IsUntraded)
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return false;
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if (pk.Tracker == 0)
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return false;
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if (PersonalTable.BDSP.IsPresentInGame(pk.Species, pk.Form))
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// Ideally we can just check an evolution history to see if it has visited an infectious game, but this method has limited input.
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// Use encounter as the lowest evolved species, as Hisuian forms/evolutions are not available on BD/SP or SW/SH.
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if (PersonalTable.BDSP.IsPresentInGame(enc.Species, enc.Form))
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return true;
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if (PersonalTable.SWSH.IsPresentInGame(pk.Species, pk.Form))
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if (PersonalTable.SWSH.IsPresentInGame(enc.Species, enc.Form))
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return true;
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// S/V, BD/SP, and SW/SH have the ability to receive every Pokémon
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// However, S/V does not have Pokérus!
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// Species that cannot originate from PLA/SV and have Pokérus.
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// Any Hisuian form
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// Oshawott, Dewott, Samurott, Enamorus
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// Species that cannot originate as-species (can via pre-evo!!!):
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// Wyrdeer, Kleavor, Ursaluna, Sneasler, Overqwil, Basculegion
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return pk.Generation is (< 8 and >= 1); // Transferred from prior game
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}
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/// <summary>
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/// Indicates if the original <see cref="context"/> can randomly infect with Pokérus.
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/// </summary>
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public static bool CanOriginatePokerus(this EntityContext context) => context switch
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{
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EntityContext.Gen1 => false,
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EntityContext.Gen7b => false,
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EntityContext.Gen8a => false,
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EntityContext.Gen9 => false,
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_ => true,
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};
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/// <summary>
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/// Checks if the Pokérus value for Strain is possible to have on the input entity.
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/// </summary>
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/// <param name="pk">Entity to check</param>
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/// <param name="enc">Encounter template matched to</param>
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/// <param name="strain">Strain number</param>
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/// <param name="days">Duration remaining</param>
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/// <returns>True if valid</returns>
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public static bool IsStrainValid(PKM pk, int strain, int days)
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public static bool IsStrainValid(PKM pk, ISpeciesForm enc, int strain, int days)
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{
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if (!IsObtainable(pk))
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if (!IsObtainable(pk, enc))
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return IsSusceptible(strain, days);
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if (pk.Format <= 2)
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return IsStrainValid2(strain);
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return IsStrainValid(strain);
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}
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/// <inheritdoc cref="IsStrainValid(PKM,int,int)"/>
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/// <inheritdoc cref="IsStrainValid(PKM,ISpeciesForm,int,int)"/>
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/// <remarks>
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/// Strains 9+ are not obtainable due to game programming error (jmp label too early).
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/// </remarks>
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public static bool IsStrainValid2(int strain) => strain <= 8;
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/// <inheritdoc cref="IsStrainValid(PKM,int,int)"/>
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/// <inheritdoc cref="IsStrainValid(PKM,ISpeciesForm,int,int)"/>
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/// <remarks>
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/// Gen3 R/S have a 30/255 chance of giving strain 0, and a 1/255 chance of giving strain 8.
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/// Transfers will retain strain 0/8, and they're still able to infect others.
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@ -109,10 +135,11 @@ public static class Pokerus
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/// Vaccinates the Pokémon, so it will never be infectious in the format it exists in.
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/// </summary>
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/// <param name="pk">Entity to modify.</param>
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/// <param name="enc">Encounter template matched to</param>
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/// <remarks>Overwrites all Pokérus values even if already legal.</remarks>
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public static void Vaccinate(this PKM pk)
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public static void Vaccinate(this PKM pk, ISpeciesForm enc)
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{
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pk.PokerusStrain = IsObtainable(pk) ? 1 : 0;
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pk.PokerusStrain = IsObtainable(pk, enc) ? 1 : 0;
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pk.PokerusDays = 0;
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}
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}
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@ -295,7 +295,7 @@ public sealed class MiscVerifier : Verifier
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var strain = pk.PokerusStrain;
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var days = pk.PokerusDays;
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bool strainValid = Pokerus.IsStrainValid(pk, strain, days);
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bool strainValid = Pokerus.IsStrainValid(pk, data.Info.EncounterMatch, strain, days);
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if (!strainValid)
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data.AddLine(GetInvalid(string.Format(LPokerusStrainUnobtainable_0, strain)));
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@ -20,8 +20,7 @@ public static class EntityDetection
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SIZE_5PARTY or
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SIZE_6STORED or SIZE_6PARTY or
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SIZE_8STORED or SIZE_8PARTY or
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SIZE_8ASTORED or SIZE_8APARTY or
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SIZE_9STORED or SIZE_9PARTY
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SIZE_8ASTORED or SIZE_8APARTY
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;
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public static bool IsPresentGB(ReadOnlySpan<byte> data) => data[0] != 0; // Species non-zero
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