PKHeX/PKHeX.Core/Legality/LearnSource/LearnEnvironment.cs
Kurt dcc0e79435
Evotree: Evolution Traversal Enhancements (#3936)
Like move validation, evolutions are the earliest thing we wish to traverse when determining what encounters may have originated the current Pokémon. To determine the permitted species-form-levels a Pokémon could originate with, we must devolve a Pokémon by traveling down-generation to origin. Once we have an encounter, we can then evolve it to the current species, traversing upwards from origin to the current format.
2023-07-05 21:14:09 -07:00

61 lines
1.6 KiB
C#

using System;
namespace PKHeX.Core;
using static LearnEnvironment;
/// <summary>
/// Indicates the group of game(s) that the move was learned in.
/// </summary>
public enum LearnEnvironment : byte
{
None,
/* Gen1 */ RB, YW,
/* Gen2 */ GS, C,
/* Gen3 */ RS, E, FR, LG,
/* Gen4 */ DP, Pt, HGSS,
/* Gen5 */ BW, B2W2,
/* Gen6 */ XY, ORAS,
/* Gen7 */ SM, USUM, GG,
/* Gen8 */ SWSH, BDSP, PLA,
/* Gen9 */ SV,
HOME,
}
/// <summary>
/// Extension methods for <see cref="LearnEnvironment"/>.
/// </summary>
public static class LearnEnvironmentExtensions
{
public static bool IsSpecified(this LearnEnvironment value) => value is not None;
public static byte GetGeneration(this LearnEnvironment value) => value switch
{
RB or YW => 1,
GS or C => 2,
RS or E or FR or LG => 3,
DP or Pt or HGSS => 4,
BW or B2W2 => 5,
XY or ORAS => 6,
SM or USUM or GG => 7,
SWSH or BDSP or PLA => 8,
SV => 9,
_ => 0,
};
public static ReadOnlySpan<EvoCriteria> GetEvolutions(this LearnEnvironment value, EvolutionHistory history) => value switch
{
RB or YW => history.Gen1,
GS or C => history.Gen2,
RS or E or FR or LG => history.Gen3,
DP or Pt or HGSS => history.Gen4,
BW or B2W2 => history.Gen5,
XY or ORAS => history.Gen6,
SM or USUM => history.Gen7,
GG => history.Gen7b,
SWSH => history.Gen8,
PLA => history.Gen8a,
BDSP => history.Gen8b,
SV => history.Gen9,
_ => ReadOnlySpan<EvoCriteria>.Empty,
};
}