PKHeX/PKHeX.Core/Legality/Verifiers/MemoryVerifier.cs
Kurt 5bcccc6d92
HOME 2.0.0: Handle conversion behavior & restrictions (#3506)
* Revises legality checks to account for traveling between the three game islands (PLA/BDSP/SWSH)
* Adds conversion mechanisms between the three formats, as well as flexible conversion options to backfill missing data (thanks GameFreak/ILCA for opting for lossy conversion instead of updating the games).
* Adds API abstractions for HOME data storage format (EKH/PKH format 1, aka EH1/PH1).
* Revises some APIs for better usage:
  - `PKM` now exposes a `Context` to indicate the isolation context for legality purposes.
  - Some method signatures have changed to accept `Context` or `GameVersion` instead of a vague `int` for Generation.
  - Evolution History is now tracked in the Legality parse for specific contexts, rather than only per generation.
2022-05-30 21:43:52 -07:00

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using System;
using System.Linq;
using static PKHeX.Core.LegalityCheckStrings;
using static PKHeX.Core.MemoryPermissions;
namespace PKHeX.Core
{
/// <summary>
/// Verifies the <see cref="IMemoryOT.OT_Memory"/>, <see cref="IMemoryHT.HT_Memory"/>, and associated values.
/// </summary>
public sealed class MemoryVerifier : Verifier
{
protected override CheckIdentifier Identifier => CheckIdentifier.Memory;
public override void Verify(LegalityAnalysis data)
{
var pkm = data.pkm;
if (ShouldHaveNoMemory(data, pkm))
{
VerifyOTMemoryIs(data, 0, 0, 0, 0);
VerifyHTMemoryNone(data, (ITrainerMemories)pkm);
return;
}
VerifyOTMemory(data);
VerifyHTMemory(data);
}
private static bool ShouldHaveNoMemory(LegalityAnalysis data, PKM pkm)
{
if (pkm.BDSP || pkm.LA)
return !pkm.HasVisitedSWSH(data.Info.EvoChainsAllGens.Gen8);
return false;
}
private CheckResult VerifyCommonMemory(PKM pkm, int handler, int gen, LegalInfo info, MemoryContext context)
{
var memory = MemoryVariableSet.Read((ITrainerMemories)pkm, handler);
// Actionable HM moves
int matchingMoveMemory = Array.IndexOf(MemoryContext6.MoveSpecificMemories[0], memory.MemoryID);
if (matchingMoveMemory != -1)
{
if (gen != 6) // Gen8 has no HMs, so this memory can never exist.
return GetInvalid(string.Format(LMemoryArgBadMove, memory.Handler));
if (pkm.Species != (int)Species.Smeargle)
{
if (!GetCanLearnMachineMove(pkm, info.EvoChainsAllGens[gen], MemoryContext6.MoveSpecificMemories[1][matchingMoveMemory], 6))
return GetInvalid(string.Format(LMemoryArgBadMove, memory.Handler));
}
}
if (context.IsInvalidGeneralLocationMemoryValue(memory.MemoryID, memory.Variable, info.EncounterMatch, pkm))
return GetInvalid(string.Format(LMemoryArgBadLocation, memory.Handler));
if (context.IsInvalidMiscMemory(memory.MemoryID, memory.Variable))
return GetInvalid(string.Format(LMemoryArgBadID, memory.Handler));
switch (memory.MemoryID)
{
case 19 when pkm.Species is (int)Species.Urshifu && memory.Variable is not 34: // tall building is the only location for evolving Urshifu
case 19 when pkm.Species is (int)Species.Runerigus && memory.Variable is not 72: // vast field is the only location for evolving Runerigus
return GetInvalid(string.Format(LMemoryArgBadLocation, memory.Handler));
// {0} saw {2} carrying {1} on its back. {4} that {3}.
case 21 when gen != 6 || !PersonalTable.AO.GetFormEntry(memory.Variable, 0).TMHM[101]: // Fly
return GetInvalid(string.Format(LMemoryArgBadMove, memory.Handler));
// {0} used {2} at {1}s instruction, but it had no effect. {4} that {3}.
// The Move Deleter that {0} met through {1} made it forget {2}. {4} that {3}.
case 16 or 48 when !CanKnowMove(pkm, memory, gen, info, memory.MemoryID == 16):
return GetInvalid(string.Format(LMemoryArgBadMove, memory.Handler));
case 49 when memory.Variable == 0 || !GetCanRelearnMove(pkm, memory.Variable, gen, info.EvoChainsAllGens[gen]):
return GetInvalid(string.Format(LMemoryArgBadMove, memory.Handler));
// Dynamaxing
// {0} battled at {1}s side against {2} that Dynamaxed. {4} that {3}.
case 71 when !GetCanDynamaxTrainer(memory.Variable, 8, handler == 0 ? (GameVersion)pkm.Version : GameVersion.Any):
// {0} battled {2} and Dynamaxed upon {1}s instruction. {4} that {3}.
case 72 when !PersonalTable.SWSH.IsSpeciesInGame(memory.Variable):
return GetInvalid(string.Format(LMemoryArgBadSpecies, memory.Handler));
// Move
// {0} studied about how to use {2} in a Box, thinking about {1}. {4} that {3}.
// {0} practiced its cool pose for the move {2} in a Box, wishing to be praised by {1}. {4} that {3}.
case 80 or 81 when !CanKnowMove(pkm, memory, gen, info):
return Get(string.Format(LMemoryArgBadMove, memory.Handler), Severity.Invalid);
// Species
// With {1}, {0} went fishing, and they caught {2}. {4} that {3}.
case 7 when !GetCanFishSpecies(memory.Variable, gen, handler == 0 ? (GameVersion)pkm.Version : GameVersion.Any):
return GetInvalid(string.Format(LMemoryArgBadSpecies, memory.Handler));
// {0} saw {1} paying attention to {2}. {4} that {3}.
// {0} fought hard until it had to use Struggle when it battled at {1}s side against {2}. {4} that {3}.
// {0} was taken to a Pokémon Nursery by {1} and left with {2}. {4} that {3}.
case 9 or 60 or 75 when gen == 8 && !PersonalTable.SWSH.IsSpeciesInGame(memory.Variable):
return GetInvalid(string.Format(LMemoryArgBadSpecies, memory.Handler));
// {0} had a great chat about {1} with the {2} that it was in a Box with. {4} that {3}.
// {0} became good friends with the {2} in a Box, practiced moves with it, and talked about the day that {0} would be praised by {1}. {4} that {3}.
// {0} got in a fight with the {2} that it was in a Box with about {1}. {4} that {3}.
case 82 or 83 or 87 when !PersonalTable.SWSH.IsSpeciesInGame(memory.Variable):
return GetInvalid(string.Format(LMemoryArgBadSpecies, memory.Handler));
// {0} had a very hard training session with {1}. {4} that {3}.
case 53 when gen == 8 && pkm is IHyperTrain t && !t.IsHyperTrained():
return GetInvalid(string.Format(LMemoryArgBadID, memory.Handler));
// Item
// {0} went to a Pokémon Center with {1} to buy {2}. {4} that {3}.
case 5 when !CanBuyItem(gen, memory.Variable, handler == 0 ? (GameVersion)pkm.Version : GameVersion.Any):
// {1} used {2} when {0} was in trouble. {4} that {3}.
case 15 when !CanUseItem(gen, memory.Variable, pkm.Species):
// {0} saw {1} using {2}. {4} that {3}.
case 26 when !CanUseItemGeneric(gen, memory.Variable):
// {0} planted {2} with {1} and imagined a big harvest. {4} that {3}.
case 34 when !CanPlantBerry(gen, memory.Variable):
// {1} had {0} hold items like {2} to help it along. {4} that {3}.
case 40 when !CanHoldItem(gen, memory.Variable):
// {0} was excited when {1} won prizes like {2} through Loto-ID. {4} that {3}.
case 51 when !CanWinLotoID(gen, memory.Variable):
// {0} was worried if {1} was looking for the {2} that it was holding in a Box. {4} that {3}.
// When {0} was in a Box, it thought about the reason why {1} had it hold the {2}. {4} that {3}.
case 84 or 88 when !Legal.HeldItems_SWSH.Contains(memory.Variable) || pkm.IsEgg:
return GetInvalid(string.Format(LMemoryArgBadItem, memory.Handler));
}
return VerifyCommonMemoryEtc(memory, context);
}
private CheckResult VerifyCommonMemoryEtc(MemoryVariableSet memory, MemoryContext context)
{
if (!context.CanHaveIntensity(memory.MemoryID, memory.Intensity))
{
var min = context.GetMinimumIntensity(memory.MemoryID);
return GetInvalid(string.Format(LMemoryIndexIntensityMin, memory.Handler, min));
}
if (!context.CanHaveFeeling(memory.MemoryID, memory.Feeling, memory.Variable))
return GetInvalid(string.Format(LMemoryFeelInvalid, memory.Handler));
return GetValid(string.Format(LMemoryF_0_Valid, memory.Handler));
}
/// <summary>
/// Used for enforcing a fixed memory detail.
/// </summary>
/// <param name="data">Output storage</param>
/// <param name="m">Memory ID</param>
/// <param name="i">Intensity</param>
/// <param name="t">Text Variable</param>
/// <param name="f">Feeling</param>
private void VerifyOTMemoryIs(LegalityAnalysis data, byte m, byte i, ushort t, byte f)
{
var pkm = (ITrainerMemories)data.pkm;
if (pkm.OT_Memory != m)
data.AddLine(GetInvalid(string.Format(LMemoryIndexID, L_XOT, m)));
if (pkm.OT_Intensity != i)
data.AddLine(GetInvalid(string.Format(LMemoryIndexIntensity, L_XOT, i)));
if (pkm.OT_TextVar != t)
data.AddLine(GetInvalid(string.Format(LMemoryIndexVar, L_XOT, t)));
if (pkm.OT_Feeling != f)
data.AddLine(GetInvalid(string.Format(LMemoryIndexFeel, L_XOT, f)));
}
private void VerifyHTMemoryNone(LegalityAnalysis data, ITrainerMemories pkm)
{
if (pkm.HT_Memory != 0 || pkm.HT_TextVar != 0 || pkm.HT_Intensity != 0 || pkm.HT_Feeling != 0)
data.AddLine(GetInvalid(string.Format(LMemoryCleared, L_XHT)));
}
private void VerifyOTMemory(LegalityAnalysis data)
{
var pkm = data.pkm;
var mem = (ITrainerMemories)pkm;
var Info = data.Info;
// If the encounter has a memory from the OT that could never have it replaced, ensure it was not modified.
switch (data.EncounterMatch)
{
case WC6 {IsEgg: false} g when g.OTGender != 3:
VerifyOTMemoryIs(data, g.OT_Memory, g.OT_Intensity, g.OT_TextVar, g.OT_Feeling);
return;
case WC7 {IsEgg: false} g when g.OTGender != 3:
VerifyOTMemoryIs(data, g.OT_Memory, g.OT_Intensity, g.OT_TextVar, g.OT_Feeling);
return;
case WC8 {IsEgg: false} g when g.OTGender != 3:
VerifyOTMemoryIs(data, g.OT_Memory, g.OT_Intensity, g.OT_TextVar, g.OT_Feeling);
return;
case IMemoryOT t and not MysteryGift: // Ignore Mystery Gift cases (covered above)
VerifyOTMemoryIs(data, t.OT_Memory, t.OT_Intensity, t.OT_TextVar, t.OT_Feeling);
return;
}
int memoryGen = Info.Generation;
var memory = mem.OT_Memory;
if (pkm.IsEgg)
{
// Traded unhatched eggs in Gen8 have OT link trade memory applied erroneously.
// They can also have the box-inspect memory!
if (memoryGen != 8 || !((pkm.Met_Location == Locations.LinkTrade6 && memory == 4) || memory == 85))
{
VerifyOTMemoryIs(data, 0, 0, 0, 0); // empty
return;
}
}
else if (!CanHaveMemoryForOT(pkm, memoryGen, memory, Info.EvoChainsAllGens))
{
VerifyOTMemoryIs(data, 0, 0, 0, 0); // empty
return;
}
// Bounds checking
var context = Memories.GetContext(memoryGen);
if (!context.CanObtainMemoryOT((GameVersion)pkm.Version, memory))
data.AddLine(GetInvalid(string.Format(LMemoryArgBadID, L_XOT)));
// Verify memory if specific to OT
switch (memory)
{
// No Memory
case 0: // SWSH trades don't set HT memories immediately, which is hilarious.
data.AddLine(Get(LMemoryMissingOT, memoryGen == 8 ? Severity.Fishy : Severity.Invalid));
VerifyOTMemoryIs(data, 0, 0, 0, 0);
return;
// {0} hatched from an Egg and saw {1} for the first time at... {2}. {4} that {3}.
case 2 when !Info.EncounterMatch.EggEncounter:
data.AddLine(GetInvalid(string.Format(LMemoryArgBadHatch, L_XOT)));
break;
// {0} became {1}s friend when it arrived via Link Trade at... {2}. {4} that {3}.
case 4 when Info.Generation == 6: // gen8 applies this memory erroneously
data.AddLine(GetInvalid(string.Format(LMemoryArgBadOTEgg, L_XOT)));
return;
// {0} went to the Pokémon Center in {2} with {1} and had its tired body healed there. {4} that {3}.
case 6 when !context.HasPokeCenter((GameVersion)pkm.Version, mem.OT_TextVar):
data.AddLine(GetInvalid(string.Format(LMemoryArgBadLocation, L_XOT)));
return;
// {0} was with {1} when {1} caught {2}. {4} that {3}.
case 14:
var result = GetCanBeCaptured(mem.OT_TextVar, Info.Generation, (GameVersion)pkm.Version) // Any Game in the Handling Trainer's generation
? GetValid(string.Format(LMemoryArgSpecies, L_XOT))
: GetInvalid(string.Format(LMemoryArgBadSpecies, L_XOT));
data.AddLine(result);
return;
}
data.AddLine(VerifyCommonMemory(pkm, 0, Info.Generation, Info, context));
}
private static bool CanHaveMemoryForOT(PKM pkm, int origin, int memory, EvolutionHistory evos)
{
switch (origin)
{
// Bank Memories only: Gen7 does not set memories.
case 1 or 2 or 7 when memory != 4: // VC transfers
// Memories don't exist
case 7 when pkm.GG: // LGPE does not set memories.
case 8 when pkm.GO_HOME: // HOME does not set memories.
case 8 when pkm.Met_Location == Locations.HOME8: // HOME does not set memories.
case 8 when pkm.BDSP && !pkm.HasVisitedSWSH(evos.Gen8): // BDSP does not set memories.
case 8 when pkm.LA && !pkm.HasVisitedSWSH(evos.Gen8): // LA does not set memories.
return false;
// Eggs cannot have memories
// Cannot have memories if the OT was from a generation prior to Gen6.
default:
return origin >= 6 && !pkm.IsEgg;
}
}
private void VerifyHTMemory(LegalityAnalysis data)
{
var pkm = data.pkm;
var mem = (ITrainerMemories)pkm;
var Info = data.Info;
var memory = mem.HT_Memory;
if (pkm.IsUntraded)
{
if (memory == 4 && WasTradedSWSHEgg(pkm))
{
// Untraded link trade eggs in Gen8 have HT link trade memory applied erroneously.
// Verify the link trade memory later.
}
else
{
VerifyHTMemoryNone(data, mem);
return;
}
}
if (pkm.Format == 7)
{
VerifyHTMemoryTransferTo7(data, pkm, Info);
return;
}
var memoryGen = pkm.Format >= 8 ? 8 : 6;
// Bounds checking
var context = Memories.GetContext(memoryGen);
if (!context.CanObtainMemoryHT((GameVersion)pkm.Version, memory))
data.AddLine(GetInvalid(string.Format(LMemoryArgBadID, L_XHT)));
// Verify memory if specific to HT
switch (memory)
{
// No Memory
case 0: // SWSH memory application has an off-by-one error: [0,99] + 1 <= chance --> don't apply
data.AddLine(Get(LMemoryMissingHT, memoryGen == 8 ? ParseSettings.Gen8MemoryMissingHT : Severity.Invalid));
VerifyHTMemoryNone(data, mem);
return;
// {0} met {1} at... {2}. {1} threw a Poké Ball at it, and they started to travel together. {4} that {3}.
case 1:
data.AddLine(GetInvalid(string.Format(LMemoryArgBadCatch, L_XHT)));
return;
// {0} hatched from an Egg and saw {1} for the first time at... {2}. {4} that {3}.
case 2:
data.AddLine(GetInvalid(string.Format(LMemoryArgBadHatch, L_XHT)));
return;
// {0} went to the Pokémon Center in {2} with {1} and had its tired body healed there. {4} that {3}.
case 6 when !context.HasPokeCenter(GameVersion.Any, mem.HT_TextVar):
data.AddLine(GetInvalid(string.Format(LMemoryArgBadLocation, L_XHT)));
return;
// {0} was with {1} when {1} caught {2}. {4} that {3}.
case 14:
var result = GetCanBeCaptured(mem.HT_TextVar, memoryGen, GameVersion.Any) // Any Game in the Handling Trainer's generation
? GetValid(string.Format(LMemoryArgSpecies, L_XHT))
: GetInvalid(string.Format(LMemoryArgBadSpecies, L_XHT));
data.AddLine(result);
return;
}
var commonResult = VerifyCommonMemory(pkm, 1, memoryGen, Info, context);
data.AddLine(commonResult);
}
private static bool WasTradedSWSHEgg(PKM pkm) => pkm.SWSH && (!pkm.IsEgg ? pkm.Egg_Location : pkm.Met_Location) is Locations.LinkTrade6;
private void VerifyHTMemoryTransferTo7(LegalityAnalysis data, PKM pkm, LegalInfo Info)
{
var mem = (ITrainerMemories)pkm;
// Bank Transfer adds in the Link Trade Memory.
// Trading 7<->7 between games (not Bank) clears this data.
if (mem.HT_Memory == 0)
{
VerifyHTMemoryNone(data, mem);
return;
}
// Transfer 6->7 & withdraw to same HT => keeps past gen memory
// Don't require link trade memory for these past gen cases
int gen = Info.Generation;
if (gen is >= 3 and < 7 && pkm.CurrentHandler == 1)
return;
if (mem.HT_Memory != 4)
data.AddLine(Severity.Invalid, LMemoryIndexLinkHT, CheckIdentifier.Memory);
if (mem.HT_TextVar != 0)
data.AddLine(Severity.Invalid, LMemoryIndexArgHT, CheckIdentifier.Memory);
if (mem.HT_Intensity != 1)
data.AddLine(Severity.Invalid, LMemoryIndexIntensityHT1, CheckIdentifier.Memory);
if (mem.HT_Feeling > 10)
data.AddLine(Severity.Invalid, LMemoryIndexFeelHT09, CheckIdentifier.Memory);
}
}
}