mirror of
https://github.com/kwsch/PKHeX
synced 2024-12-24 03:13:18 +00:00
a10b35190c
off by 1 max range for gen2 slot -> pk2 SetRandomIVs already sets IVs inside the method, retval is for knowing what the new value sare show WC8 restricted version rather than defaulting to SH pass the rand object rather than fetching for the current thread every loop for Unown & random IV shuffling Use ToLowerInvariant for resource fetching, should resolve the turkish issue Check typeof(T) first, not that we check for ToolStripItem or ContextMenuStrip with this function.
412 lines
14 KiB
C#
412 lines
14 KiB
C#
using System;
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namespace PKHeX.Core
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{
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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 rng = RNG.LCRNG;
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var A = rng.Next(seed);
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var B = rng.Next(A);
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var skipBetweenPID = type is PIDType.Method_3 or PIDType.Method_3_Unown;
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if (skipBetweenPID) // VBlank skip between PID rand() [RARE]
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B = rng.Next(B);
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var swappedPIDHalves = type is >= PIDType.Method_1_Unown and <= PIDType.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 = rng.Next(B);
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var skipIV1Frame = type is PIDType.Method_2 or PIDType.Method_2_Unown;
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if (skipIV1Frame) // VBlank skip after PID
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C = rng.Next(C);
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var D = rng.Next(C);
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var skipIV2Frame = type is PIDType.Method_4 or PIDType.Method_4_Unown;
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if (skipIV2Frame) // VBlank skip between IVs
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D = rng.Next(D);
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var IVs = MethodFinder.GetIVsInt32(C >> 16, D >> 16);
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if (type == PIDType.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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for (int i = 2; i < 6; i++)
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IVs[i] = 0;
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}
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pk.IVs = 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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var rng = RNG.LCRNG;
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bool shiny = type is PIDType.BACD_R_S or PIDType.BACD_U_S;
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uint X = shiny ? rng.Next(seed) : seed;
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var A = rng.Next(X);
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var B = rng.Next(A);
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var C = rng.Next(B);
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var D = rng.Next(C);
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if (shiny)
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{
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uint PID = (X & 0xFFFF0000) | ((uint)pk.SID ^ (uint)pk.TID ^ X >> 16);
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PID &= 0xFFFFFFF8;
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PID |= B >> 16 & 0x7; // lowest 3 bits
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pk.PID = PID;
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}
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else if (type is PIDType.BACD_R_AX or PIDType.BACD_U_AX)
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{
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uint low = B >> 16;
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pk.PID = ((A & 0xFFFF0000) ^ (((uint)pk.TID ^ (uint)pk.SID ^ low) << 16)) | low;
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}
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else
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{
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pk.PID = (A & 0xFFFF0000) | B >> 16;
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}
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pk.IVs = MethodFinder.GetIVsInt32(C >> 16, D >> 16);
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bool antishiny = type is PIDType.BACD_R_A or PIDType.BACD_U_A;
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while (antishiny && pk.IsShiny)
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pk.PID = unchecked(pk.PID + 1);
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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 rng = RNG.XDRNG;
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switch (pk.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.TID = (int)((seed = rng.Next(seed)) >> 16);
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pk.SID = (int)((seed = rng.Next(seed)) >> 16);
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seed = rng.Advance(seed, 2); // PID calls consumed
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break;
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case (int)Species.Espeon: // Colo Espeon
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pk.TID = (int)((seed = rng.Next(seed)) >> 16);
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pk.SID = (int)((seed = rng.Next(seed)) >> 16);
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seed = rng.Advance(seed, 9); // PID calls consumed, skip over Umbreon
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break;
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}
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var A = rng.Next(seed); // IV1
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var B = rng.Next(A); // IV2
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var C = rng.Next(B); // Ability?
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var D = rng.Next(C); // PID
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var E = rng.Next(D); // PID
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pk.PID = (D & 0xFFFF0000) | E >> 16;
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pk.IVs = MethodFinder.GetIVsInt32(A >> 16, B >> 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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var rng = RNG.XDRNG;
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var O = rng.Next(seed); // SID
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var A = rng.Next(O); // PID
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var B = rng.Next(A); // PID
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var C = rng.Next(B); // Held Item
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var D = rng.Next(C); // Version
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var E = rng.Next(D); // OT Gender
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const int TID = 40122;
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var SID = (int)(O >> 16);
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var pid1 = A >> 16;
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var pid2 = B >> 16;
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pk.TID = TID;
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pk.SID = SID;
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var pid = pid1 << 16 | pid2;
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if ((pid2 > 7 ? 0 : 1) != (pid1 ^ SID ^ TID))
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pid ^= 0x80000000;
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pk.PID = pid;
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pk.HeldItem = (int)(C >> 31) + 169; // 0-Ganlon, 1-Salac
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pk.Version = (int)(D >> 31) + 1; // 0-Sapphire, 1-Ruby
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pk.OT_Gender = (int)(E >> 31);
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pk.IVs = rng.GetSequentialIVsInt32(E);
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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 PIDType.Channel:
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return SetValuesFromSeedChannel;
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case PIDType.CXD:
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return SetValuesFromSeedXDRNG;
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case PIDType.Method_1 or PIDType.Method_2 or PIDType.Method_3 or PIDType.Method_4:
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case PIDType.Method_1_Unown or PIDType.Method_2_Unown or PIDType.Method_3_Unown or PIDType.Method_4_Unown:
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case PIDType.Method_1_Roamer:
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return (pk, seed) => SetValuesFromSeedLCRNG(pk, t, seed);
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case PIDType.BACD_R:
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case PIDType.BACD_R_A:
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case PIDType.BACD_R_S:
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case PIDType.BACD_R_AX:
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return (pk, seed) => SetValuesFromSeedBACD(pk, t, seed & 0xFFFF);
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case PIDType.BACD_U:
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case PIDType.BACD_U_A:
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case PIDType.BACD_U_S:
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case PIDType.BACD_U_AX:
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return (pk, seed) => SetValuesFromSeedBACD(pk, t, seed);
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case PIDType.PokeSpot:
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return SetRandomPIDIV;
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case PIDType.G5MGShiny:
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return SetValuesFromSeedMG5Shiny;
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case PIDType.Pokewalker:
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return (pk, seed) => pk.PID = GetPokeWalkerPID(pk.TID, pk.SID, seed%24, pk.Gender, pk.PersonalInfo.Gender);
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// others: unimplemented
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case PIDType.CuteCharm:
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break;
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case PIDType.ChainShiny:
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return SetRandomChainShinyPID;
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case PIDType.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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// 13 rand bits
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// 1 3-bit for upper
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// 1 3-bit for lower
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uint Next() => (seed = RNG.LCRNG.Next(seed)) >> 16;
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uint lower = Next() & 7;
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uint upper = Next() & 7;
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for (int i = 0; i < 13; i++)
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lower |= (Next() & 1) << (3 + i);
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upper = ((uint)(lower ^ pk.TID ^ pk.SID) & 0xFFF8) | (upper & 0x7);
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pk.PID = upper << 16 | lower;
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pk.IVs = MethodFinder.GetIVsInt32(Next(), Next());
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}
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public static void SetRandomPokeSpotPID(PKM pk, int nature, int gender, int ability, int slot)
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{
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while (true)
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{
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var seed = Util.Rand32();
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if (!MethodFinder.IsPokeSpotActivation(slot, seed, out _))
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continue;
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var rng = RNG.XDRNG;
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var D = rng.Next(seed); // PID
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var E = rng.Next(D); // PID
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pk.PID = (D & 0xFFFF0000) | E >> 16;
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if (!IsValidCriteria4(pk, nature, ability, gender))
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continue;
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pk.SetRandomIVs();
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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, int TID, int SID)
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{
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uint PID = (uint)((TID ^ SID ^ gval) << 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 uint GetPokeWalkerPID(int TID, int SID, uint nature, int gender, int gr)
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{
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if (nature >= 24)
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nature = 0;
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uint pid = (uint)((TID ^ SID) >> 8 ^ 0xFF) << 24; // the most significant byte of the PID is chosen so the Pokémon can never be shiny.
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// Ensure nature is set to required nature without affecting shininess
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pid += nature - (pid % 25);
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if (gr is 0 or >= 0xFE) // non-dual gender
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return pid;
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// Ensure Gender is set to required gender without affecting other properties
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// If Gender is modified, modify the ability if appropriate
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// either m/f
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var pidGender = (pid & 0xFF) < gr ? 1 : 0;
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if (gender == pidGender)
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return pid;
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if (gender == 0) // Male
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{
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pid += (uint)((((gr - (pid & 0xFF)) / 25) + 1) * 25);
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if ((nature & 1) != (pid & 1))
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pid += 25;
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}
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else
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{
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pid -= (uint)(((((pid & 0xFF) - gr) / 25) + 1) * 25);
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if ((nature & 1) != (pid & 1))
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pid -= 25;
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}
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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.TID, pk.SID);
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SetRandomIVs(pk);
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}
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public static void SetRandomWildPID(PKM pk, int gen, int nature, int ability, int gender, PIDType specific = PIDType.None)
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{
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if (specific == PIDType.Pokewalker)
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{
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SetRandomPIDPokewalker(pk, nature, gender);
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return;
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}
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switch (gen)
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{
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case 3:
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case 4:
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SetRandomWildPID4(pk, nature, ability, gender, specific);
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break;
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case 5:
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SetRandomWildPID5(pk, nature, ability, gender, specific);
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break;
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default:
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SetRandomWildPID(pk, nature, ability, gender);
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break;
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}
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}
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public static void SetRandomPIDPokewalker(PKM pk, int nature, int gender)
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{
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// Pokewalker PIDs cannot yield multiple abilities from the input nature-gender-trainerID. Disregard any ability request.
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pk.Gender = gender;
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do
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{
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pk.PID = GetPokeWalkerPID(pk.TID, pk.SID, (uint) nature, gender, pk.PersonalInfo.Gender);
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} while (!pk.IsGenderValid());
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pk.RefreshAbility((int) (pk.PID & 1));
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SetRandomIVs(pk);
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}
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/// <summary>
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/// Generates a <see cref="PKM.PID"/> and <see cref="PKM.IVs"/> that are unrelated.
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/// </summary>
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/// <param name="pkm">Pokémon to modify.</param>
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/// <param name="seed">Seed which is used for the <see cref="PKM.PID"/>.</param>
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private static void SetRandomPIDIV(PKM pkm, uint seed)
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{
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pkm.PID = seed;
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SetRandomIVs(pkm);
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}
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private static void SetRandomWildPID4(PKM pk, int nature, int ability, int gender, PIDType specific = PIDType.None)
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{
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pk.RefreshAbility(ability);
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pk.Gender = gender;
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var type = GetPIDType(pk, specific);
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var method = GetGeneratorMethod(type);
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while (true)
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{
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method(pk, Util.Rand32());
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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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private static bool IsValidCriteria4(PKM pk, int nature, int ability, int 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.PID & 1) != ability)
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return false;
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return true;
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}
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private static PIDType GetPIDType(PKM pk, PIDType specific)
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{
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if (specific != PIDType.None)
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return specific;
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if (pk.Version == 15)
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return PIDType.CXD;
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if (pk.Gen3 && pk.Species == (int)Species.Unown)
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return PIDType.Method_1_Unown + Util.Rand.Next(3);
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return PIDType.Method_1;
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}
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private static void SetRandomWildPID5(PKM pk, int nature, int ability, int gender, PIDType specific = PIDType.None)
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{
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var tidbit = (pk.TID ^ pk.SID) & 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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while (true)
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{
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uint seed = Util.Rand32();
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if (specific == PIDType.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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SetRandomIVs(pk);
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return;
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}
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}
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private static void SetRandomWildPID(PKM pk, int nature, int ability, int gender)
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{
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uint seed = Util.Rand32();
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pk.PID = seed;
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pk.Nature = nature;
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pk.Gender = gender;
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pk.RefreshAbility(ability);
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SetRandomIVs(pk);
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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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}
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