/// <summary>
/// Checks a <see cref="PIDIV"/> to see if any encounter frames can generate the spread. Requires further filtering against matched Encounter Slots and generation patterns.
/// </summary>
/// <param name="pidiv">Matched <see cref="PIDIV"/> containing <see cref="PIDIV.RNG"/> info and <see cref="PIDIV.OriginSeed"/>.</param>
/// <param name="pk"><see cref="PKM"/> object containing various accessible information required for the encounter.</param>
/// <returns><see cref="IEnumerable{Frame}"/> to yield possible encounter details for further filtering</returns>
public static IEnumerable <Frame> GetFrames(PIDIV pidiv, PKM pk)
{
FrameGenerator info = new FrameGenerator(pidiv, pk);
if (info.FrameType == FrameType.None)
{
yield break;
}
info.Nature = pk.EncryptionConstant % 25;
// gather possible nature determination seeds until a same-nature PID breaks the unrolling
IEnumerable <SeedInfo> seeds = SeedInfo.GetSeedsUntilNature(pidiv, info);
var frames = pidiv.Type == PIDType.CuteCharm
? FilterCuteCharm(seeds, pidiv, info)
: FilterNatureSync(seeds, pidiv, info);
var refined = RefineFrames(frames, info);
foreach (var z in refined)
{
yield return(z);
}
}
/// <summary>
/// Checks a <see cref="PIDIV"/> to see if any encounter frames can generate the spread. Requires further filtering against matched Encounter Slots and generation patterns.
/// </summary>
/// <param name="pidiv">Matched <see cref="PIDIV"/> containing <see cref="PIDIV.RNG"/> info and <see cref="PIDIV.OriginSeed"/>.</param>
/// <param name="pk"><see cref="PKM"/> object containing various accessible information required for the encounter.</param>
/// <returns><see cref="IEnumerable{Frame}"/> to yield possible encounter details for further filtering</returns>
public static IEnumerable <Frame> GetFrames(PIDIV pidiv, PKM pk)
{
if (pidiv.RNG == null)
{
return(Enumerable.Empty <Frame>());
}
FrameGenerator info = new FrameGenerator(pidiv, pk);
if (info.FrameType == FrameType.None)
{
return(Enumerable.Empty <Frame>());
}
info.Nature = pk.EncryptionConstant % 25;
// gather possible nature determination seeds until a same-nature PID breaks the unrolling
var seeds = pk.Species == 201 && pk.FRLG // reversed await case
? SeedInfo.GetSeedsUntilUnownForm(pidiv, info, pk.AltForm)
: SeedInfo.GetSeedsUntilNature(pidiv, info);
var frames = pidiv.Type == PIDType.CuteCharm
? FilterCuteCharm(seeds, pidiv, info)
: FilterNatureSync(seeds, pidiv, info);
var refined = RefineFrames(frames, info);
if (pk.Gen4 && pidiv.Type == PIDType.CuteCharm) // only permit cute charm successful frames
{
return(refined.Where(z => (z.Lead & ~LeadRequired.UsesLevelCall) == LeadRequired.CuteCharm));
}
return(refined);
}
// gather possible nature determination seeds until a same-nature PID breaks the unrolling
private static IEnumerable <SeedInfo> GetSeeds(PIDIV pidiv, FrameGenerator info, PKM pk)
{
if (pk.Species == (int)Species.Unown && pk.FRLG) // Gen3 FRLG Unown: reversed await case
{
return(SeedInfo.GetSeedsUntilUnownForm(pidiv, info, pk.Form));
}
if (pidiv.Type == PIDType.CuteCharm && info.FrameType != FrameType.MethodH) // Gen4: ambiguous seed due to gender-buffered PID
{
return(SeedInfo.GetSeedsUntilNature4Cute(pk));
}
return(SeedInfo.GetSeedsUntilNature(pidiv, info));
}
public bool Equals(SeedInfo s) => s.Charm3 == Charm3 && s.Seed == Seed;
