mirror of
https://github.com/kwsch/PKHeX.git
synced 2026-04-25 16:35:02 -05:00
b389cd3acd
Detect base algorithm (regular, regular-anti, anti, shiny) and check for sub-patterns that differ per encounter (such as OT gender). Implement PIDIV generators within the Gift3* template, remove old branches Add Table Weight detection (still need to test) for PCJP 5anniv Add PCJP GCEA campaign 1-6 templates Differentiate Mystry Mew seeds; disallow Mews that were deleted b4 cart cloning Need to double check some gen3 events (esp hadou titans), but is 99% there Thanks Sabresite, for your continued support
309 lines
9.5 KiB
C#
309 lines
9.5 KiB
C#
using System;
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using static PKHeX.Core.PIDType;
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namespace PKHeX.Core;
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/// <summary>
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/// Contains a collection of methods that mutate the input Pokémon object, usually to obtain a <see cref="PIDType"/> correlation.
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/// </summary>
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public static class PIDGenerator
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{
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private static void SetValuesFromSeedLCRNG(PKM pk, PIDType type, uint seed)
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{
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var A = LCRNG.Next(seed);
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var B = LCRNG.Next(A);
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var skipBetweenPID = type is Method_3 or Method_3_Unown;
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if (skipBetweenPID) // VBlank skip between PID rand() [RARE]
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B = LCRNG.Next(B);
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var swappedPIDHalves = type is >= Method_1_Unown and <= Method_4_Unown;
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if (swappedPIDHalves) // switched order of PID halves, "BA**"
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pk.PID = (A & 0xFFFF0000) | (B >> 16);
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else
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pk.PID = (B & 0xFFFF0000) | (A >> 16);
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var C = LCRNG.Next(B);
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var skipIV1Frame = type is Method_2 or Method_2_Unown;
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if (skipIV1Frame) // VBlank skip after PID
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C = LCRNG.Next(C);
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var D = LCRNG.Next(C);
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var skipIV2Frame = type is Method_4 or Method_4_Unown;
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if (skipIV2Frame) // VBlank skip between IVs
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D = LCRNG.Next(D);
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Span<int> IVs = stackalloc int[6];
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MethodFinder.GetIVsInt32(IVs, C >> 16, D >> 16);
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if (type == Method_1_Roamer)
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{
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// Only store lowest 8 bits of IV data; zero out the other bits.
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IVs[1] &= 7;
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IVs[2..].Clear();
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}
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pk.SetIVs(IVs);
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}
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private static void SetValuesFromSeedBACD(PKM pk, PIDType type, uint seed)
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{
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uint idxor = pk.TID16 ^ (uint)pk.SID16;
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pk.PID = GetPIDFromSeedBACD(ref seed, type, idxor);
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SetIVsFromSeedSequentialLCRNG(ref seed, pk);
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pk.RefreshAbility((int)(pk.PID & 1));
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}
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private static uint GetPIDFromSeedBACD(ref uint seed, PIDType type, uint idXor) => type switch
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{
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BACD => CommonEvent3.GetRegular(ref seed),
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BACD_S => CommonEvent3.GetForceShiny(ref seed, idXor),
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BACD_AX => CommonEvent3.GetAntishiny(ref seed, idXor),
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_ => CommonEvent3.GetRegularAntishiny(ref seed, idXor),
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};
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public static void SetIVsFromSeedSequentialLCRNG(ref uint seed, PKM pk)
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{
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var c16 = LCRNG.Next16(ref seed);
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var d16 = LCRNG.Next16(ref seed);
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Span<int> IVs = stackalloc int[6];
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MethodFinder.GetIVsInt32(IVs, c16, d16);
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pk.SetIVs(IVs);
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}
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private static void SetValuesFromSeedXDRNG(PKM pk, uint seed)
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{
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var species = pk.Species;
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switch (species)
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{
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case (int)Species.Umbreon or (int)Species.Eevee: // Colo Umbreon, XD Eevee
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pk.TID16 = (ushort)XDRNG.Next16(ref seed);
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pk.SID16 = (ushort)XDRNG.Next16(ref seed);
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seed = XDRNG.Next2(seed); // fake PID
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break;
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case (int)Species.Espeon: // Colo Espeon
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var tid = pk.TID16 = (ushort)XDRNG.Next16(ref seed);
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var sid = pk.SID16 = (ushort)XDRNG.Next16(ref seed);
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LockFinder.SkipValidColoStarter(ref seed, tid, sid);
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seed = XDRNG.Next2(seed); // fake PID
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break;
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}
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var a16 = XDRNG.Next15(ref seed); // IV1
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var b16 = XDRNG.Next15(ref seed); // IV2
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Span<int> IVs = stackalloc int[6];
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MethodFinder.GetIVsInt32(IVs, a16, b16);
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pk.SetIVs(IVs);
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_ = XDRNG.Next16(ref seed); // Ability
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if (species is (int)Species.Umbreon or (int)Species.Espeon)
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{
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// Reuse existing logic.
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pk.PID = LockFinder.GenerateStarterPID(ref seed, pk.TID16, pk.SID16);
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}
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else
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{
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// Generate PID.
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var d16 = XDRNG.Next16(ref seed); // PID
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var e16 = XDRNG.Next16(ref seed); // PID
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pk.PID = (d16 << 16) | e16;
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}
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}
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public static void SetValuesFromSeedXDRNG_EReader(PKM pk, uint seed)
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{
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var D = XDRNG.Prev3(seed); // PID
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var E = XDRNG.Next(D); // PID
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pk.PID = (D & 0xFFFF0000) | (E >> 16);
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}
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private static void SetValuesFromSeedChannel(PKM pk, uint seed)
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{
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const ushort TID16 = 40122;
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var sid = XDRNG.Next16(ref seed);
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pk.ID32 = (sid << 16) | TID16;
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var pid1 = XDRNG.Next16(ref seed);
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var pid2 = XDRNG.Next16(ref seed);
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var pid = (pid1 << 16) | pid2;
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if ((pid2 > 7 ? 0 : 1) != (pid1 ^ sid ^ TID16))
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pid ^= 0x80000000;
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pk.PID = pid;
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pk.HeldItem = (ushort)(XDRNG.Next16(ref seed) >> 15) + 169; // 0-Ganlon, 1-Salac
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pk.Version = GameVersion.S + (byte)(XDRNG.Next16(ref seed) >> 15); // 0-Sapphire, 1-Ruby
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pk.OriginalTrainerGender = (byte)(XDRNG.Next16(ref seed) >> 15);
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Span<int> ivs = stackalloc int[6];
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XDRNG.GetSequentialIVsInt32(seed, ivs);
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pk.SetIVs(ivs);
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}
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public static void SetValuesFromSeed(PKM pk, PIDType type, uint seed)
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{
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var method = GetGeneratorMethod(type);
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method(pk, seed);
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}
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private static Action<PKM, uint> GetGeneratorMethod(PIDType t)
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{
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switch (t)
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{
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case Channel:
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return SetValuesFromSeedChannel;
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case CXD:
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return SetValuesFromSeedXDRNG;
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case Method_1 or Method_2 or Method_3 or Method_4:
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case Method_1_Unown or Method_2_Unown or Method_3_Unown or Method_4_Unown:
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case Method_1_Roamer:
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return (pk, seed) => SetValuesFromSeedLCRNG(pk, t, seed);
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case BACD:
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case BACD_S:
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case BACD_A:
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case BACD_AX:
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return (pk, seed) => SetValuesFromSeedBACD(pk, t, seed);
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case PokeSpot:
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return SetRandomPokeSpotPID;
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case G5MGShiny:
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return SetValuesFromSeedMG5Shiny;
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case Pokewalker:
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return (pk, seed) =>
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{
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var pid = pk.PID = PokewalkerRNG.GetPID(pk.TID16, pk.SID16, seed % 24, pk.Gender, pk.PersonalInfo.Gender);
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pk.RefreshAbility((int)(pid & 1));
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};
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// others: unimplemented
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case CuteCharm:
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break;
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case ChainShiny:
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return SetRandomChainShinyPID;
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case G4MGAntiShiny:
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break;
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}
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return (_, _) => { };
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}
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public static void SetRandomChainShinyPID(PKM pk, uint seed)
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{
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pk.PID = ClassicEraRNG.GetChainShinyPID(ref seed, pk.ID32);
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SetIVsFromSeedSequentialLCRNG(ref seed, pk);
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}
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private static void SetRandomPokeSpotPID(PKM pk, uint seed)
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{
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var D = XDRNG.Next(seed); // PID
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var E = XDRNG.Next(D); // PID
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pk.PID = (D & 0xFFFF0000) | (E >> 16);
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}
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public static void SetRandomPokeSpotPID(PKM pk, Nature nature, byte gender, int ability, int slot)
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{
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var rnd = Util.Rand;
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while (true)
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{
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var seed = rnd.Rand32();
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if (!MethodFinder.IsPokeSpotActivation(slot, seed, out var newSeed))
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continue;
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SetRandomPokeSpotPID(pk, newSeed);
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pk.SetRandomIVs();
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if (!IsValidCriteria4(pk, nature, ability, gender))
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continue;
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return;
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}
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}
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public static uint GetMG5ShinyPID(uint gval, uint av, ushort TID16, ushort SID16)
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{
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uint PID = ((gval ^ TID16 ^ SID16) << 16) | gval;
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if ((PID & 0x10000) != av << 16)
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PID ^= 0x10000;
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return PID;
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}
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public static void SetValuesFromSeedMG5Shiny(PKM pk, uint seed)
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{
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var gv = seed >> 24;
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var av = seed & 1; // arbitrary choice
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pk.PID = GetMG5ShinyPID(gv, av, pk.TID16, pk.SID16);
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SetRandomIVs(pk);
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}
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public static uint SetRandomWildPID4(PKM pk, Nature nature, int ability, byte gender, PIDType type)
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{
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pk.RefreshAbility(ability);
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pk.Gender = gender;
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var method = GetGeneratorMethod(type);
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var rnd = Util.Rand;
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while (true)
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{
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var seed = rnd.Rand32();
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method(pk, seed);
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if (!IsValidCriteria4(pk, nature, ability, gender))
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continue;
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return seed;
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}
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}
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public static bool IsValidCriteria4(PKM pk, Nature nature, int ability, byte gender)
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{
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if (pk.GetSaneGender() != gender)
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return false;
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if (pk.Nature != nature)
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return false;
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if ((pk.EncryptionConstant & 1) != ability)
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return false;
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return true;
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}
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public static void SetRandomWildPID5(PKM pk, Nature nature, int ability, byte gender, PIDType specific = None)
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{
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var tidbit = (pk.TID16 ^ pk.SID16) & 1;
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pk.RefreshAbility(ability);
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pk.Gender = gender;
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pk.Nature = nature;
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if (ability == 2)
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ability = 0;
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var rnd = Util.Rand;
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while (true)
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{
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uint seed = rnd.Rand32();
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if (specific == G5MGShiny)
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{
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SetValuesFromSeedMG5Shiny(pk, seed);
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seed = pk.PID;
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}
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else
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{
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var bitxor = (seed >> 31) ^ (seed & 1);
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if (bitxor != tidbit)
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seed ^= 1;
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}
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if (((seed >> 16) & 1) != ability)
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continue;
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pk.PID = seed;
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if (pk.GetSaneGender() != gender)
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continue;
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return;
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}
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}
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private static void SetRandomIVs(PKM pk)
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{
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pk.SetRandomIVs();
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}
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}
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