PKHeX/PKHeX.Core/Legality/Tables/FormChangeUtil.cs
Kurt 6441bdadd8
Add specialized struct for Moveset and IV specs (#3572)
`Moveset` struct stores 4 moves, and exposes methods to interact with a moveset.
`IndividualValueSet` stores a 6 IV template (signed).

Performance impact:
* Less allocating on the heap: Moves - (8 bytes member ptr, 20 bytes heap->8 bytes member)
* Less allocating on the heap: IVs - (8 bytes member ptr, 28 bytes heap->8 bytes member)
* No heap pointers, no need to jump to grab data.
* Easy to inline logic for checking if moves are present (no linq usage with temporary collections).

End result is faster ctor times, less memory used, faster program.
2022-08-21 17:34:32 -07:00

60 lines
2.3 KiB
C#

using System;
using System.Collections.Generic;
namespace PKHeX.Core;
/// <summary>
/// Logic for checking if an entity can freely change <see cref="PKM.Form"/>.
/// </summary>
public static class FormChangeUtil
{
/// <summary>
/// Checks if all forms should be iterated when checking for moves.
/// </summary>
/// <param name="species">Entity species</param>
/// <param name="form">Entity form</param>
/// <param name="generation">Generation we're checking in</param>
/// <param name="option">Conditions we're checking with</param>
public static bool ShouldIterateForms(ushort species, byte form, int generation, LearnOption option)
{
if (option is not LearnOption.Current)
return FormChangeMoves.TryGetValue(species, out var func) && func((generation, form));
return IterateAllForms(species);
}
private static bool IterateAllForms(int species) => FormChangeMovesRetain.Contains(species);
/// <summary>
/// Species that can change between their forms and get access to form-specific moves.
/// </summary>
private static readonly HashSet<int> FormChangeMovesRetain = new()
{
(int)Species.Deoxys,
(int)Species.Giratina,
(int)Species.Shaymin,
(int)Species.Hoopa,
};
/// <summary>
/// Species that can change between their forms and get access to form-specific moves.
/// </summary>
private static readonly Dictionary<int, Func<(int Generation, int Form), bool>> FormChangeMoves = new()
{
{(int)Species.Deoxys, g => g.Generation >= 6},
{(int)Species.Giratina, g => g.Generation >= 6},
{(int)Species.Shaymin, g => g.Generation >= 6},
{(int)Species.Rotom, g => g.Generation >= 6},
{(int)Species.Hoopa, g => g.Generation >= 6},
{(int)Species.Tornadus, g => g.Generation >= 6},
{(int)Species.Thundurus,g => g.Generation >= 6},
{(int)Species.Landorus, g => g.Generation >= 6},
{(int)Species.Urshifu, g => g.Generation >= 8},
{(int)Species.Enamorus, g => g.Generation >= 8},
// Fuse
{(int)Species.Kyurem, g => g.Generation >= 6},
{(int)Species.Necrozma, g => g.Generation >= 8},
{(int)Species.Calyrex, g => g.Generation >= 8},
{(int)Species.Pikachu, g => g.Generation == 6},
};
}