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Add cxd starter TID/SID correlation check

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Kurt 2017-05-11 00:32:31 -07:00
parent a01e164e2e
commit 4aeb3ce818
1 changed files with 22 additions and 3 deletions
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25
PKHeX/Legality/Checks.cs
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@ -1365,13 +1365,32 @@ namespace PKHeX.Core
{ {
// Starters have a correlation to the Trainer ID numbers // Starters have a correlation to the Trainer ID numbers
var spec = ((EncounterStatic) EncounterMatch).Species; var spec = ((EncounterStatic) EncounterMatch).Species;
var rev = int.MinValue;
switch (spec) switch (spec)
{ {
// pidiv reversed 5x yields SID, again == TID. +7 if another PKM is generated
case 133: // Eevee case 133: // Eevee
case 196: // Espeon rev = 5; break;
case 197: // Umbreon
break; // todo case 197: // Umbreon (generated before Espeon)
rev = 5; break;
case 196: // Espeon (generated after Umbreon)
rev = 12; break;
} }
if (rev == int.MinValue)
return;
var pidiv = MethodFinder.Analyze(pkm);
if (pidiv == null || pidiv.Type != PIDType.CXD)
{
AddLine(Severity.Invalid, V400, CheckIdentifier.PID);
return;
}
var seed = pidiv.OriginSeed;
var SIDf = pidiv.RNG.Reverse(seed, rev);
var TIDf = pidiv.RNG.Prev(SIDf);
if (SIDf >> 16 != pkm.SID || TIDf >> 16 != pkm.TID)
AddLine(Severity.Invalid, V400, CheckIdentifier.PID);
} }
else if (pkm.WasEgg) // can't obtain eggs in CXD else if (pkm.WasEgg) // can't obtain eggs in CXD
{ {