/// <summary>
/// Filters the input <see cref="SeedInfo"/> according to a Nature Lock frame generation pattern.
/// </summary>
/// <param name="seeds">Seed Information for the frame</param>
/// <param name="info">Search Info for the frame</param>
/// <returns>Possible matches to the Nature Lock frame generation pattern</returns>
private static IEnumerable <Frame> FilterNatureSync(IEnumerable <SeedInfo> seeds, FrameGenerator info)
{
foreach (var seed in seeds)
{
var s = seed.Seed;
if (info.Safari3)
{
// successful pokeblock activation
bool result = IsValidPokeBlockNature(s, info.Nature, out uint blockSeed);
if (result)
{
yield return(info.GetFrame(blockSeed, seed.Charm3 ? LeadRequired.CuteCharm : LeadRequired.None));
}
// if no pokeblocks present (or failed call), fall out of the safari specific code and generate via the other scenarios
}
var rand = s >> 16;
bool sync = info.AllowLeads && !seed.Charm3 && (info.DPPt ? rand >> 15 : rand & 1) == 0;
bool reg = (info.DPPt ? rand / 0xA3E : rand % 25) == info.Nature;
if (!sync && !reg) // doesn't generate nature frame
{
continue;
}
uint prev = RNG.LCRNG.Prev(s);
if (info.AllowLeads && reg) // check for failed sync
{
var failsync = (info.DPPt ? prev >> 31 : (prev >> 16) & 1) != 1;
if (failsync)
{
yield return(info.GetFrame(RNG.LCRNG.Prev(prev), LeadRequired.SynchronizeFail));
}
}
if (sync)
{
yield return(info.GetFrame(prev, LeadRequired.Synchronize));
}
if (reg)
{
if (seed.Charm3)
{
yield return(info.GetFrame(prev, LeadRequired.CuteCharm));
}
else
{
if (info.Safari3)
{
prev = RNG.LCRNG.Prev(prev); // wasted RNG call
}
yield return(info.GetFrame(prev, LeadRequired.None));
}
}
}
}
/// <summary>
/// Filters the input <see cref="SeedInfo"/> according to a Cute Charm frame generation pattern.
/// </summary>
/// <param name="seeds">Seed Information for the frame</param>
/// <param name="info">Search Info for the frame</param>
/// <returns>Possible matches to the Cute Charm frame generation pattern</returns>
private static IEnumerable <Frame> FilterCuteCharm(IEnumerable <SeedInfo> seeds, FrameGenerator info)
{
foreach (var seed in seeds)
{
var s = seed.Seed;
var rand = s >> 16;
var nature = info.DPPt ? rand / 0xA3E : rand % 25;
if (nature != info.Nature)
{
continue;
}
var prev = RNG.LCRNG.Prev(s);
var proc = prev >> 16;
bool charmProc = (info.DPPt ? proc / 0x5556 : proc % 3) != 0; // 2/3 odds
if (!charmProc)
{
continue;
}
yield return(info.GetFrame(RNG.LCRNG.Prev(prev), LeadRequired.CuteCharm));
}
}
private static IEnumerable <Frame> RefineFrames4(IEnumerable <Frame> frames, FrameGenerator info)
{
var list = new List <Frame>();
foreach (var f in frames)
{
// Current Seed of the frame is the ESV.
var rand = f.Seed >> 16;
f.RandESV = rand;
f.RandLevel = rand; // unused
f.OriginSeed = info.RNG.Prev(f.Seed);
yield return(f);
// Create a copy for level; shift ESV and origin back
var esv = f.OriginSeed >> 16;
var origin = info.RNG.Prev(f.OriginSeed);
var withLevel = info.GetFrame(f.Seed, f.Lead | LeadRequired.UsesLevelCall, esv, f.RandLevel, origin);
yield return(withLevel);
if (f.Lead != LeadRequired.None)
{
continue;
}
// Generate frames for other slots after the regular slots
list.Add(f);
}
foreach (var f in list)
{
var leadframes = GenerateLeadSpecificFrames4(f, info);
foreach (var frame in leadframes)
{
yield return(frame);
}
}
}
private static IEnumerable <Frame> GenerateLeadSpecificFrames4(Frame f, FrameGenerator info)
{
LeadRequired lead;
var prev0 = f.Seed; // 0
var prev1 = info.RNG.Prev(f.Seed); // -1
var prev2 = info.RNG.Prev(prev1); // -2
var prev3 = info.RNG.Prev(prev2); // -3
// Rand call raw values
var p0 = prev0 >> 16;
var p1 = prev1 >> 16;
var p2 = prev2 >> 16;
// Cute Charm
// -2 ESV
// -1 Level (Optional)
// 0 CC Proc (Random() % 3 != 0)
// 1 Nature
if (info.Gendered)
{
bool cc = (info.DPPt ? p0 / 0x5556 : p0 % 3) != 0;
if (f.Lead == LeadRequired.CuteCharm) // 100% required for frame base
{
if (!cc)
{
yield break;
}
yield return(info.GetFrame(prev2, LeadRequired.CuteCharm, p1, p1, prev2));
yield return(info.GetFrame(prev2, LeadRequired.CuteCharm | LeadRequired.UsesLevelCall, p2, p1, prev3));
yield break;
}
lead = cc ? LeadRequired.CuteCharm : LeadRequired.CuteCharmFail;
yield return(info.GetFrame(prev2, lead, p1, p1, prev2));
yield return(info.GetFrame(prev2, lead | LeadRequired.UsesLevelCall, p2, p1, prev3));
}
if (f.Lead == LeadRequired.CuteCharm)
{
yield break;
}
// Pressure, Hustle, Vital Spirit = Force Maximum Level from slot
// -2 ESV
// -1 Level (Optional)
// 0 LevelMax proc (Random() & 1)
// 1 Nature
bool max = (info.DPPt ? p0 >> 15 : p0 & 1) == 1;
lead = max ? LeadRequired.PressureHustleSpirit : LeadRequired.PressureHustleSpiritFail;
yield return(info.GetFrame(prev2, lead, p1, p1, prev2));
yield return(info.GetFrame(prev2, lead | LeadRequired.UsesLevelCall, p2, p1, prev3));
// Keen Eye, Intimidate (Not compatible with Sweet Scent)
// -2 ESV
// -1 Level (Optional)
// 0 Level Adequate Check !(Random() % 2 == 1) rejects -- rand%2==1 is adequate
// 1 Nature
// Note: if this check fails, the encounter generation routine is aborted.
if (max) // same result as above, no need to recalculate
{
lead = LeadRequired.IntimidateKeenEye;
yield return(info.GetFrame(prev2, lead, p1, p1, prev2));
yield return(info.GetFrame(prev2, lead | LeadRequired.UsesLevelCall, p2, p1, prev3));
}
// Static or Magnet Pull
// -2 SlotProc (Random % 2 == 0)
// -1 ESV (select slot)
// 0 Level (Optional)
// 1 Nature
var force1 = (info.DPPt ? p1 >> 15 : p1 & 1) == 1;
lead = force1 ? LeadRequired.StaticMagnet : LeadRequired.StaticMagnetFail;
yield return(info.GetFrame(prev2, lead, p0, p0, prev3));
var force2 = (info.DPPt ? p2 >> 15 : p2 & 1) == 1;
lead = (force2 ? LeadRequired.StaticMagnet : LeadRequired.StaticMagnetFail) | LeadRequired.UsesLevelCall;
yield return(info.GetFrame(prev2, lead, p1, p0, prev3));
}
private static IEnumerable <Frame> GenerateLeadSpecificFrames3(Frame f, FrameGenerator info)
{
// Check leads -- none in list if leads are not allowed
// Certain leads inject a RNG call
// 3 different rand places
LeadRequired lead;
var prev0 = f.Seed; // 0
var prev1 = info.RNG.Prev(f.Seed); // -1
var prev2 = info.RNG.Prev(prev1); // -2
var prev3 = info.RNG.Prev(prev2); // -3
// Rand call raw values
var p0 = prev0 >> 16;
var p1 = prev1 >> 16;
var p2 = prev2 >> 16;
// Cute Charm
// -2 ESV
// -1 Level
// 0 CC Proc (Random() % 3 != 0)
// 1 Nature
if (info.Gendered)
{
bool cc = p0 % 3 != 0;
if (f.Lead == LeadRequired.CuteCharm) // 100% required for frame base
{
if (cc)
{
yield return(info.GetFrame(prev2, LeadRequired.CuteCharm, p2, p1, prev3));
}
yield break;
}
lead = cc ? LeadRequired.CuteCharm : LeadRequired.CuteCharmFail;
yield return(info.GetFrame(prev2, lead, p2, p1, prev3));
}
if (f.Lead == LeadRequired.CuteCharm)
{
yield break;
}
// Pressure, Hustle, Vital Spirit = Force Maximum Level from slot
// -2 ESV
// -1 Level
// 0 LevelMax proc (Random() & 1)
// 1 Nature
bool max = p0 % 2 == 1;
lead = max ? LeadRequired.PressureHustleSpirit : LeadRequired.PressureHustleSpiritFail;
yield return(info.GetFrame(prev2, lead, p2, p1, prev3));
// Keen Eye, Intimidate (Not compatible with Sweet Scent)
// -2 ESV
// -1 Level
// 0 Level Adequate Check !(Random() % 2 == 1) rejects -- rand%2==1 is adequate
// 1 Nature
// Note: if this check fails, the encounter generation routine is aborted.
if (max) // same result as above, no need to recalculate
{
lead = LeadRequired.IntimidateKeenEye;
yield return(info.GetFrame(prev2, lead, p2, p1, prev3));
}
// Static or Magnet Pull
// -2 SlotProc (Random % 2 == 0)
// -1 ESV (select slot)
// 0 Level
// 1 Nature
bool force = p2 % 2 == 0;
if (force)
{
// Since a failed proc is indistinguishable from the default frame calls, only generate if it succeeds.
lead = LeadRequired.StaticMagnet;
yield return(info.GetFrame(prev2, lead, p1, p0, prev3));
}
}