Update event database, handle HOME gifts horribly

PKHeX.Core/Game/GameStrings/GameStrings.cs

@@ -356,6 +356,11 @@ namespace PKHeX.Core
                 metSWSH_40000[i] += " (-)";
             metSWSH_40000[29] += " (-)"; // a Video game Event (in spanish etc) -- duplicate with line 39
             metSWSH_40000[52] += " (-)"; // a Pokémon event -- duplicate with line 37
+
+            // metSWSH_40000[80] += " (-)"; // Pokémon GO -- duplicate with 30000's entry
+            // metSWSH_40000[85] += " (-)"; // Pokémon HOME -- duplicate with 30000's entry
+            metSWSH_30000[11] += " (-)"; // Pokémon GO -- duplicate with 40000's entry
+            metSWSH_30000[17] += " (-)"; // Pokémon HOME -- duplicate with 40000's entry
         }
 
         public IReadOnlyList<string> GetItemStrings(int generation, GameVersion game = GameVersion.Any)

PKHeX.Core/Legality/Verifiers/PIDVerifier.cs

@@ -26,7 +26,16 @@ namespace PKHeX.Core
 
             var Info = data.Info;
             if ((Info.Generation >= 6 || (Info.Generation < 3 && pkm.Format >= 7)) && pkm.PID == pkm.EncryptionConstant)
-                data.AddLine(GetInvalid(LPIDEqualsEC)); // better to flag than 1:2^32 odds since RNG is not feasible to yield match
+            {
+                if (Info.EncounterMatch is WC8 wc8 && wc8.PID == 0 &&wc8.EncryptionConstant == 0)
+                {
+                    // We'll allow this to pass.
+                }
+                else
+                {
+                    data.AddLine(GetInvalid(LPIDEqualsEC)); // better to flag than 1:2^32 odds since RNG is not feasible to yield match
+                }
+            }
 
             VerifyShiny(data);
         }

PKHeX.Core/MysteryGifts/WC8.cs

@@ -294,6 +294,8 @@ namespace PKHeX.Core
             return 0x12C + (index * 0x1C);
         }
 
+        private bool IsHOMEGift => PIDType == Shiny.FixedValue && PID == 0 && EncryptionConstant == 0;
+
         public override PKM ConvertToPKM(ITrainerInfo SAV, EncounterCriteria criteria)
         {
             if (!IsPokémon)
@@ -306,7 +308,7 @@ namespace PKHeX.Core
 
             var pk = new PK8
             {
-                EncryptionConstant = EncryptionConstant != 0 ? EncryptionConstant : Util.Rand32(),
+                EncryptionConstant = EncryptionConstant != 0 || IsHOMEGift ? EncryptionConstant : Util.Rand32(),
                 TID = TID,
                 SID = SID,
                 Species = Species,
@@ -502,7 +504,19 @@ namespace PKHeX.Core
                 var OT = GetOT(pkm.Language); // May not be guaranteed to work.
                 if (!string.IsNullOrEmpty(OT) && OT != pkm.OT_Name) return false;
                 if (OriginGame != 0 && OriginGame != pkm.Version) return false;
-                if (EncryptionConstant != 0 && EncryptionConstant != pkm.EncryptionConstant) return false;
+                if (EncryptionConstant != 0)
+                {
+                    if (EncryptionConstant != pkm.EncryptionConstant)
+                        return false;
+                }
+                else if (IsHOMEGift)// 0
+                {
+                    // HOME gifts -- PID and EC are zeroes...
+                    if (EncryptionConstant != pkm.EncryptionConstant)
+                        return false;
+                    if (IsShiny)
+                        return false;
+                }
             }
 
             if (Form != pkm.AltForm && !Legal.IsFormChangeable(pkm, Species))