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https://github.com/kwsch/PKHeX.git
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a57f40ae7d
Many years ago, PKX used to be a >4,000 line bloated file, which spun off multiple classes like CommonEdits and most of the early non-GUI PKM related logic. Now, it's just a stub to source the latest generation & personal table. Separate files = more concise info, and more room to grow to do more advanced things. Makes the IsPresent methods public (no longer internal).
80 lines
2.7 KiB
C#
80 lines
2.7 KiB
C#
using System;
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namespace PKHeX.Core;
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public static class EntityPID
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{
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/// <summary>
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/// Gets a random PID according to specifications.
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/// </summary>
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/// <param name="rnd">RNG to use</param>
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/// <param name="species">National Dex ID</param>
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/// <param name="gender">Current Gender</param>
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/// <param name="origin">Origin Generation</param>
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/// <param name="nature">Nature</param>
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/// <param name="form">Form</param>
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/// <param name="oldPID">Current PID</param>
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/// <remarks>Used to retain ability bits.</remarks>
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/// <returns>Rerolled PID.</returns>
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public static uint GetRandomPID(Random rnd, int species, int gender, int origin, int nature, int form, uint oldPID)
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{
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// Gen6+ (and VC) PIDs do not tie PID to Nature/Gender/Ability
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if (origin >= 24)
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return rnd.Rand32();
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// Below logic handles Gen3-5.
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// No need to get form specific entry, as Gen3-5 do not have that feature.
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int gt = PKX.Personal[species].Gender;
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bool g34 = origin <= 15;
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uint abilBitVal = g34 ? oldPID & 0x0000_0001 : oldPID & 0x0001_0000;
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bool g3unown = origin <= 5 && species == (int)Species.Unown;
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bool singleGender = PersonalInfo.IsSingleGender(gt); // single gender, skip gender check
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while (true) // Loop until we find a suitable PID
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{
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uint pid = rnd.Rand32();
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// Gen 3/4: Nature derived from PID
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if (g34 && pid % 25 != nature)
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continue;
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// Gen 3 Unown: Letter/form derived from PID
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if (g3unown)
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{
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var pidLetter = GetUnownForm3(pid);
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if (pidLetter != form)
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continue;
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}
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else if (g34)
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{
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if (abilBitVal != (pid & 0x0000_0001)) // keep ability bits
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continue;
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}
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else
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{
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if (abilBitVal != (pid & 0x0001_0000)) // keep ability bits
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continue;
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}
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if (singleGender) // Set Gender(less)
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return pid; // PID can be anything
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// Gen 3/4/5: Gender derived from PID
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if (gender == EntityGender.GetFromPIDAndRatio(pid, gt))
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return pid;
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}
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}
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/// <summary>
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/// Gets the Unown Forme ID from PID.
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/// </summary>
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/// <param name="pid">Personality ID</param>
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/// <remarks>Should only be used for 3rd Generation origin specimens.</remarks>
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/// <returns></returns>
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public static int GetUnownForm3(uint pid)
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{
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var value = (pid & 0x3000000) >> 18 | (pid & 0x30000) >> 12 | (pid & 0x300) >> 6 | (pid & 0x3);
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return (int)(value % 28);
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}
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}
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