Misc prep updates

Update comments / xmldoc
Add a savefile storage compressor (ie array[] with empty interstitials
-> list); return true if the compression moved anything (repopulate
views), and the count of occupied slots in the list.
Add saveblock base class; I haven't really liked how SAV6/7 do all the
logic; I'll still expose properties that will then point to a saveblock.
Cuts down clutter.
Add template Dex manipulator, with gen6/7 implementations
Speculate sequential gp/ge gameversion IDs

PKHeX.Core/Game/GameVersion.cs

@@ -354,7 +354,7 @@
         USUM,
 
         /// <summary>
-        /// Pokémon Let's Go (TBD)
+        /// Pokémon Let's Go Pikachu &amp; Eevee
         /// </summary>
         /// <remarks>Used to lump data from the associated games as data assets are shared.</remarks>
         /// <see cref="GP"/>

PKHeX.Core/Legality/Encounters/Data/Encounters3Shadow.cs

@@ -479,6 +479,7 @@
                 new NPCLock(085), // Shadow Dodrio
                 new NPCLock(340, 18, 0, 127), // Whiscash (M) (Bashful)
         }};
+
         public static readonly TeamLock XRaticateDodrioSeen = new TeamLock {
             Species = 020, // Raticate
             Comment = "Dodrio Seen",
@@ -678,8 +679,8 @@
             Species = 125, // Electabuzz
             Locks = new[] {
                 new NPCLock(277), // Shadow Swellow
-                new NPCLock(065, 24, 0, 063), // Alakazam (M) (Serious)
+                new NPCLock(065, 24, 0, 063), // Alakazam (M) (Quirky)
-                new NPCLock(230, 6, 1, 127), // Kingdra (F) (Bashful)
+                new NPCLock(230, 6, 1, 127), // Kingdra (F) (Docile)
                 new NPCLock(214, 18, 1, 127), // Heracross (F) (Bashful)
         }};
 
@@ -688,8 +689,8 @@
             Comment = "Swellow Seen",
             Locks = new[] {
                 new NPCLock(277, true), // Shadow Swellow (Seen)
-                new NPCLock(065, 24, 0, 063), // Alakazam (M) (Serious)
+                new NPCLock(065, 24, 0, 063), // Alakazam (M) (Quirky)
-                new NPCLock(230, 6, 1, 127), // Kingdra (F) (Bashful)
+                new NPCLock(230, 6, 1, 127), // Kingdra (F) (Docile)
                 new NPCLock(214, 18, 1, 127), // Heracross (F) (Bashful)
         }};
 

PKHeX.Core/Legality/Tables.cs

@@ -450,6 +450,7 @@ namespace PKHeX.Core
 
         #region Games
 
+        public static readonly int[] Games_7gg = { 42, 43 };
         public static readonly int[] Games_7vc2 = { 39, 40, 41 }; // Gold, Silver, Crystal
         public static readonly int[] Games_7vc1 = { 35, 36, 37, 38 }; // Red, Green, Blue, Yellow
         public static readonly int[] Games_7go = { 34 };

PKHeX.Core/Legality/Tables7.cs

@@ -17,11 +17,6 @@ namespace PKHeX.Core
         internal const int MaxItemID_7_USUM = 959;
         internal const int MaxAbilityID_7_USUM = 233;
 
-        internal const int MaxSpeciesID_7_GG = 809;
-        internal const int MaxMoveID_7_GG = 728; // todo
-        internal const int MaxItemID_7_GG = 959; // todo
-        internal const int MaxAbilityID_7_GG = MaxAbilityID_7_USUM;
-
         #region Met Locations
 
         internal static readonly int[] Met_SMc = { 0, 60002, 30002, };

PKHeX.Core/PKM/Util/FormConverter.cs

@@ -44,6 +44,8 @@ namespace PKHeX.Core
                 return GetFormsGen7(species, types, forms);
         }
 
+        private static bool IsGG() => false;
+
         public static bool IsTotemForm(int species, int form, int generation = 7)
         {
             if (generation != 7)
@@ -83,6 +85,7 @@ namespace PKHeX.Core
         }
 
         private static readonly string[] EMPTY = {""};
+        private const string Partner = "Starter";
 
         private static string[] GetFormsGen1(int species, IReadOnlyList<string> types, IReadOnlyList<string> forms, int generation)
         {
@@ -96,6 +99,14 @@ namespace PKHeX.Core
                         forms[805], // Mega X
                         forms[806], // Mega Y
                     };
+
+                case 133 when IsGG():
+                    return new[]
+                    {
+                        types[000], // Normal
+                        Partner,
+                    };
+
                 case 025:
                     return GetFormsPikachu(generation, types, forms);
 
@@ -547,7 +558,7 @@ namespace PKHeX.Core
                         forms[734], // Cosplay
                     };
                 case 7:
-                    return new[]
+                    var arr = new[]
                     {
                         types[000], // Normal
                         forms[813], // Original
@@ -558,6 +569,11 @@ namespace PKHeX.Core
                         forms[818], // Alola
                         forms[1063] // Partner
                     };
+                    if (!IsGG())
+                        return arr;
+                    System.Array.Resize(ref arr, arr.Length + 1);
+                    arr[arr.Length - 1] = Partner;
+                    return arr;
             }
         }
 

PKHeX.Core/Saves/SaveFile.cs

@@ -825,5 +825,62 @@ namespace PKHeX.Core
 
         public virtual string EBerryName => string.Empty;
         public virtual bool IsEBerryIsEnigma => true;
+
+        /// <summary>
+        /// Compresses the <see cref="BoxData"/> by pulling out the empty storage slots and putting them at the end, retaining all existing data.
+        /// </summary>
+        /// <param name="storedCount">Count of actual <see cref="PKM"/> stored.</param>
+        /// <param name="slotPointers">Important slot pointers that need to be repointed if a slot moves.</param>
+        /// <returns>True if <see cref="BoxData"/> was updated, false if no update done.</returns>
+        public bool CompressStorage(out int storedCount, params ushort[][] slotPointers)
+        {
+            // keep track of empty slots, and only write them at the end if slots were shifted (no need otherwise).
+            var empty = new List<byte[]>();
+            bool shiftedSlots = false;
+
+            ushort ctr = 0;
+            int size = SIZE_STORED;
+            int count = BoxSlotCount;
+            for (int i = 0; i < count; i++)
+            {
+                int offset = Box + (i * size);
+                if (IsPKMPresent(offset))
+                {
+                    if (ctr != i) // copy required
+                    {
+                        shiftedSlots = true; // appending empty slots afterwards is now required since a rewrite was done
+                        Buffer.BlockCopy(Data, offset, Data, Box + (ctr * size), size);
+                        foreach (var ptrSet in slotPointers)
+                        {
+                            for (int j = 0; j < ptrSet.Length; j++) // update ptr
+                            {
+                                if (ptrSet[j] == i)
+                                    ptrSet[j] = ctr;
+                            }
+                        }
+                    }
+                    ctr++;
+                    continue;
+                }
+
+                // pop out an empty slot; save all unused data & preserve order
+                byte[] data = new byte[size];
+                Buffer.BlockCopy(Data, offset, data, 0, size);
+                empty.Add(data);
+            }
+
+            storedCount = ctr;
+
+            if (!shiftedSlots)
+                return false;
+
+            for (int i = ctr; i < count; i++)
+            {
+                var data = empty[i - ctr];
+                int offset = Box + (i * size);
+                Buffer.BlockCopy(Data, offset, data, 0, size);
+            }
+            return true;
+        }
     }
 }

PKHeX.Core/Saves/Substructures/Gen5/EntreeForest.cs

@@ -23,7 +23,6 @@ namespace PKHeX.Core
 
         private const int EncryptionSeedOffset = 0x84C;
 
-
         private readonly byte[] Data;
 
         public EntreeForest(byte[] data)

PKHeX.Core/Saves/Substructures/Gen7/SaveBlock.cs

@@ -0,0 +1,8 @@
+namespace PKHeX.Core
+{
+    public abstract class SaveBlock
+    {
+        protected readonly byte[] Data;
+        protected SaveBlock(SaveFile SAV) => Data = SAV.Data;
+    }
+}

PKHeX.Core/Saves/Substructures/PokeDex/Zukan.cs

@@ -0,0 +1,163 @@
+using System;
+using System.Linq;
+
+namespace PKHeX.Core
+{
+    public abstract class Zukan
+    {
+        protected SaveFile SAV { get; set; }
+        protected int PokeDex { get; set; }
+        protected int PokeDexLanguageFlags { get; set; }
+
+        protected abstract int OFS_SEEN { get; }
+        protected abstract int OFS_CAUGHT { get; }
+        protected abstract int BitSeenSize { get; }
+        protected abstract int DexLangFlagByteCount { get; }
+        protected abstract int DexLangIDCount { get; }
+        protected abstract int GetDexLangFlag(int lang);
+
+        protected Func<int, int, int, int> DexFormIndexFetcher { get; set; }
+
+        protected abstract bool GetSaneFormsToIterate(int species, out int formStart, out int formEnd, int formIn);
+        protected abstract void SetSpindaDexData(PKM pkm, bool alreadySeen);
+        protected abstract void SetAllDexFlagsLanguage(int bit, int lang, bool value = true);
+        protected abstract void SetAllDexSeenFlags(int baseBit, int altform, int gender, bool isShiny, bool value = true);
+
+        public bool GetFlag(int ofs, int bitIndex) => SAV.GetFlag(PokeDex + ofs, bitIndex);
+        public void SetFlag(int ofs, int bitIndex, bool value = true) => SAV.SetFlag(PokeDex + ofs, bitIndex, value);
+
+        public bool GetCaught(int species) => GetFlag(OFS_CAUGHT, species - 1);
+        public void SetCaught(int species, bool value = true) => SetFlag(OFS_CAUGHT, species - 1, value);
+
+        public int SeenCount => Enumerable.Range(1, SAV.MaxSpeciesID).Count(GetSeen);
+        public int CaughtCount => Enumerable.Range(1, SAV.MaxSpeciesID).Count(GetCaught);
+        public decimal PercentSeen => (decimal)SeenCount / SAV.MaxSpeciesID;
+        public decimal PercentCaught => (decimal)CaughtCount / SAV.MaxSpeciesID;
+
+        public bool GetSeen(int species)
+        {
+            // check all 4 seen flags (gender/shiny)
+            for (int i = 0; i < 4; i++)
+            {
+                if (GetFlag(OFS_SEEN + (i * BitSeenSize), species - 1))
+                    return true;
+            }
+            return false;
+        }
+
+        public void SetSeen(int species, bool value = true)
+        {
+            if (!value)
+            {
+                ClearSeen(species);
+                return;
+            }
+
+            // check all 4 seen flags (gender/shiny)
+            for (int i = 0; i < 4; i++)
+            {
+                if (GetFlag(OFS_SEEN + (i * BitSeenSize), species - 1))
+                    return;
+            }
+            var gender = SAV.Personal[species].RandomGender & 1;
+            SetAllDexSeenFlags(species - 1, 0, gender, false);
+        }
+
+        private void ClearSeen(int species)
+        {
+            SetCaught(species, false);
+            for (int i = 0; i < 4; i++)
+                SetFlag(OFS_SEEN + (i * BitSeenSize), species - 1, false);
+        }
+
+        public virtual void SetDex(PKM pkm)
+        {
+            if (PokeDex < 0 || SAV.Version == GameVersion.Invalid) // sanity
+                return;
+            if (pkm.Species == 0 || pkm.Species > SAV.MaxSpeciesID) // out of range
+                return;
+            if (pkm.IsEgg) // do not add
+                return;
+
+            int bit = pkm.Species - 1;
+            SetCaught(pkm.Species); // Set the Owned Flag
+            if (pkm.Species == 327) // Spinda
+                SetSpindaDexData(pkm, GetSeen(pkm.Species));
+            SetAllDexSeenFlags(bit, pkm.AltForm, pkm.Gender & 1, pkm.IsShiny); // genderless -> male
+            SetAllDexFlagsLanguage(bit, pkm.Language);
+        }
+
+        protected void SetDexFlags(int baseBit, int formBit, int gender, int shiny, bool value = true)
+        {
+            int shift = gender | (shiny << 1);
+
+            // Set the [Species/Gender/Shiny] Seen Flag
+            SetFlag(OFS_SEEN + (shift * BitSeenSize), baseBit, value);
+
+            // Set the Display flag if none are set
+            bool displayed = GetIsSpeciesFormAnyDisplayed(baseBit, formBit);
+            if (!displayed || !value)
+                SetFlag(OFS_SEEN + ((4 + shift) * BitSeenSize), formBit, value);
+        }
+
+        private bool GetIsSpeciesFormAnyDisplayed(int baseBit, int formBit)
+        {
+            // Check Displayed Status for base form
+            for (int i = 4; i < 8; i++)
+            {
+                if (GetFlag(OFS_SEEN + (i * BitSeenSize), baseBit))
+                    return true;
+            }
+            if (baseBit == formBit)
+                return false;
+
+            // If form is not base form, check form too
+            for (int i = 4; i < 8; i++)
+            {
+                if (GetFlag(OFS_SEEN + (i * BitSeenSize), formBit))
+                    return true;
+            }
+            return false;
+        }
+
+        // Bulk Manipulation
+
+        public void SetDexEntriesAll(bool value = true, int max = -1)
+        {
+            if (max <= 0)
+                max = SAV.MaxSpeciesID;
+            for (int i = 1; i <= max; i++)
+                SetDexEntriesSingle(i, value);
+        }
+
+        public void SetDexEntriesSingle(int species, bool value = true)
+        {
+            SetCaught(species, value);
+            SetSeen(species, value);
+
+            var entry = SAV.Personal[species];
+            int baseBit = species - 1;
+            int fc = entry.FormeCount;
+            for (int f = 0; f < fc; f++)
+            {
+                if (!entry.OnlyFemale)
+                {
+                    SetAllDexSeenFlags(baseBit, f, 0, false, value);
+                    SetAllDexSeenFlags(baseBit, f, 0, true, value);
+                }
+                if (!entry.OnlyMale && !entry.Genderless)
+                {
+                    SetAllDexSeenFlags(baseBit, f, 1, false, value);
+                    SetAllDexSeenFlags(baseBit, f, 1, true, value);
+                }
+            }
+            SetAllDexFlagsLanguage(baseBit, value);
+        }
+
+        protected void SetAllDexFlagsLanguage(int bit, bool value = true)
+        {
+            for (int i = 1; i <= DexLangIDCount + 1; i++)
+                SetAllDexFlagsLanguage(bit, i, value);
+        }
+    }
+}

PKHeX.Core/Saves/Substructures/PokeDex/Zukan6.cs

@@ -0,0 +1,176 @@
+namespace PKHeX.Core
+{
+    public class Zukan6 : Zukan
+    {
+        protected override int OFS_SEEN => OFS_CAUGHT + BitSeenSize;
+        protected override int OFS_CAUGHT => 0x8;
+        protected override int BitSeenSize => 0x60;
+        protected override int DexLangFlagByteCount => 7;
+        protected override int DexLangIDCount => 7;
+
+        protected override int GetDexLangFlag(int lang)
+        {
+            lang--;
+            if (lang > 5)
+                lang--; // 0-6 language vals
+            if ((uint)lang > 5)
+                return -1;
+            return lang;
+        }
+
+        protected override bool GetSaneFormsToIterate(int species, out int formStart, out int formEnd, int formIn)
+        {
+            formStart = 0;
+            formEnd = 0;
+            return false;
+        }
+
+        protected override void SetSpindaDexData(PKM pkm, bool alreadySeen)
+        {
+
+        }
+
+        protected override void SetAllDexFlagsLanguage(int bit, int lang, bool value = true)
+        {
+            lang = GetDexLangFlag(lang);
+            if (lang < 0)
+                return;
+
+            int lbit = (bit * DexLangIDCount) + lang;
+            if (lbit < DexLangFlagByteCount << 3) // Sanity check for max length of region
+                SetFlag(PokeDexLanguageFlags, lbit, value);
+        }
+
+        protected override void SetAllDexSeenFlags(int baseBit, int altform, int gender, bool isShiny, bool value = true)
+        {
+            var shiny = isShiny ? 1 : 0;
+            SetDexFlags(baseBit, 0, gender, shiny);
+            SetFormFlags(baseBit + 1, altform, shiny, value);
+        }
+
+        public override void SetDex(PKM pkm)
+        {
+            if (PokeDex < 0)
+                return;
+            if (pkm.Species == 0)
+                return;
+            if (pkm.Species > SAV.MaxSpeciesID)
+                return;
+            if (SAV.Version == GameVersion.Invalid)
+                return;
+
+            int bit = pkm.Species - 1;
+            SetCaughtFlag(bit, pkm.Version);
+
+            // Set the [Species/Gender/Shiny] Seen Flag
+            SetAllDexSeenFlags(pkm.Species - 1, pkm.AltForm, pkm.Gender, pkm.IsShiny);
+            SetAllDexFlagsLanguage(bit, pkm.Language);
+            SetFormFlags(pkm);
+        }
+
+        private void SetCaughtFlag(int bit, int origin)
+        {
+            // Owned quality flag
+            if (SAV.ORAS)
+            {
+                SetFlag(OFS_CAUGHT, bit);
+                // Set DexNav count (only if not encountered previously)
+                var count = ((SAV6)SAV).GetEncounterCount(bit);
+                if (count == 0)
+                    ((SAV6)SAV).SetEncounterCount(bit, 1);
+            }
+            else
+            {
+                // Species: 1-649 for X/Y, and not for ORAS; Set the Foreign Owned Flag
+                if (origin < 24 && bit < 649)
+                    SetFlag(OFS_CAUGHT + 0x644, bit);
+                else
+                    SetFlag(OFS_CAUGHT, bit);
+            }
+        }
+
+        private int FormLen => SAV.ORAS ? 0x26 : 0x18;
+        private int FormDex => PokeDex + 0x8 + (BitSeenSize * 9);
+
+        private void SetFormFlags(PKM pkm)
+        {
+            int species = pkm.Species;
+            int form = pkm.AltForm;
+            var shiny = pkm.IsShiny ? 1 : 0;
+            SetFormFlags(species, form, shiny);
+        }
+
+        private void SetFormFlags(int species, int form, int shiny, bool value = true)
+        {
+            int fc = SAV.Personal[species].FormeCount;
+            int f = SAV.ORAS ? SaveUtil.GetDexFormIndexORAS(species, fc) : SaveUtil.GetDexFormIndexXY(species, fc);
+            if (f < 0)
+                return;
+
+            var bit = f + form;
+
+            // Set Form Seen Flag
+            SetFlag(FormDex + (FormLen * shiny), bit, value);
+
+            // Set Displayed Flag if necessary, check all flags
+            if (!value || !GetIsFormDisplayed(f, fc))
+                SetFlag(FormDex + (FormLen * (2 + shiny)), bit, value);
+        }
+
+        private bool GetIsFormDisplayed(int f, int fc)
+        {
+            for (int i = 0; i < fc; i++)
+            {
+                var bit2 = f + i;
+                if (GetFlag(FormDex + (FormLen * 2), bit2)) // Nonshiny
+                    return true; // already set
+                if (GetFlag(FormDex + (FormLen * 3), bit2)) // Shiny
+                    return true; // already set
+            }
+            return false;
+        }
+
+        public bool[] GetLanguageBitflags(int species)
+        {
+            var result = new bool[DexLangIDCount];
+            int bit = species - 1;
+            for (int i = 0; i < DexLangIDCount; i++)
+            {
+                int lbit = (bit * DexLangIDCount) + i;
+                result[i] = GetFlag(PokeDexLanguageFlags, lbit);
+            }
+            return result;
+        }
+
+        public void SetLanguageBitflags(int species, bool[] value)
+        {
+            int bit = species - 1;
+            for (int i = 0; i < DexLangIDCount; i++)
+            {
+                int lbit = (bit * DexLangIDCount) + i;
+                SetFlag(PokeDexLanguageFlags, lbit, value[i]);
+            }
+        }
+
+        public void ToggleLanguageFlagsAll(bool value)
+        {
+            var arr = GetBlankLanguageBits(value);
+            for (int i = 1; i <= SAV.MaxSpeciesID; i++)
+                SetLanguageBitflags(i, arr);
+        }
+
+        public void ToggleLanguageFlagsSingle(int species, bool value)
+        {
+            var arr = GetBlankLanguageBits(value);
+            SetLanguageBitflags(species, arr);
+        }
+
+        private bool[] GetBlankLanguageBits(bool value)
+        {
+            var result = new bool[DexLangIDCount];
+            for (int i = 0; i < DexLangIDCount; i++)
+                result[i] = value;
+            return result;
+        }
+    }
+}

PKHeX.Core/Saves/Substructures/PokeDex/Zukan7.cs

@@ -0,0 +1,312 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+
+namespace PKHeX.Core
+{
+    public class Zukan7 : Zukan
+    {
+        private const int MAGIC = 0x2F120F17;
+        private const int SIZE_MAGIC = 4;
+        private const int SIZE_FLAGS = 4;
+        private const int SIZE_MISC = 0x80; // Misc Data (1024 bits)
+        private const int SIZE_CAUGHT = 0x68; // 832 bits
+
+        protected override int OFS_CAUGHT => SIZE_MAGIC + SIZE_FLAGS + SIZE_MISC;
+        protected override int OFS_SEEN => OFS_CAUGHT + SIZE_CAUGHT;
+
+        protected override int BitSeenSize => 0x8C; // 1120 bits
+        protected override int DexLangFlagByteCount => 920; // 0x398 = 817*9, top off the savedata block.
+        protected override int DexLangIDCount => 9; // CHT, skipping langID 6 (unused)
+
+        private readonly IList<int> FormBaseSpecies;
+
+        protected Zukan7() { }
+
+        public Zukan7(SaveFile sav, int dex, int langflag)
+        {
+            SAV = sav;
+            PokeDex = dex;
+            PokeDexLanguageFlags = langflag;
+            DexFormIndexFetcher = SAV.USUM ? (Func<int, int, int, int>) SaveUtil.GetDexFormIndexSM : SaveUtil.GetDexFormIndexSM;
+            FormBaseSpecies = GetFormIndexBaseSpeciesList();
+            Debug.Assert(BitConverter.ToUInt32(SAV.Data, PokeDex) == MAGIC);
+        }
+
+        protected override void SetAllDexSeenFlags(int baseBit, int altform, int gender, bool isShiny, bool value = true)
+        {
+            int species = baseBit + 1;
+
+            if (species == 351) // castform
+                isShiny = false;
+
+            // Starting with Gen7, form bits are stored in the same region as the species flags.
+            int formstart = altform;
+            int formend = altform;
+            bool reset = GetSaneFormsToIterate(species, out int fs, out int fe, formstart);
+            if (reset)
+            {
+                formstart = fs;
+                formend = fe;
+            }
+
+            int shiny = isShiny ? 1 : 0;
+            for (int form = formstart; form <= formend; form++)
+            {
+                int formBit = baseBit;
+                if (form > 0) // Override the bit to overwrite
+                {
+                    int fc = SAV.Personal[species].FormeCount;
+                    if (fc > 1) // actually has forms
+                    {
+                        int f = DexFormIndexFetcher(species, fc, SAV.MaxSpeciesID - 1);
+                        if (f >= 0) // bit index valid
+                            formBit = f + form;
+                    }
+                }
+                SetDexFlags(baseBit, formBit, gender, shiny, value);
+            }
+        }
+
+        protected override bool GetSaneFormsToIterate(int species, out int formStart, out int formEnd, int formIn)
+        {
+            // 004AA370 in Moon
+            // Simplified in terms of usage -- only overrides to give all the battle forms for a pkm
+            switch (species)
+            {
+                case 351: // Castform
+                    formStart = 0;
+                    formEnd = 3;
+                    return true;
+
+                case 020: // Raticate
+                case 105: // Marowak
+                    formStart = 0;
+                    formEnd = 1;
+                    return true;
+
+                case 735: // Gumshoos
+                case 758: // Salazzle
+                case 754: // Lurantis
+                case 738: // Vikavolt
+                case 784: // Kommo-o
+                case 752: // Araquanid
+                case 777: // Togedemaru
+                case 743: // Ribombee
+                case 744: // Rockruff
+                    break;
+
+                case 421: // Cherrim
+                case 555: // Darmanitan
+                case 648: // Meloetta
+                case 746: // Wishiwashi
+                case 778: // Mimikyu
+                    formStart = 0;
+                    formEnd = 1;
+                    return true;
+
+                case 774 when formIn <= 6: // Minior
+                    break; // don't give meteor forms except the first
+
+                case 718 when formIn > 1:
+                    break;
+                default:
+                    int count = SAV.USUM ? SaveUtil.GetDexFormCountUSUM(species) : SaveUtil.GetDexFormCountSM(species);
+                    formStart = formEnd = 0;
+                    return count < formIn;
+            }
+            formStart = 0;
+            formEnd = 0;
+            return true;
+        }
+
+        protected override int GetDexLangFlag(int lang)
+        {
+            if (lang > 10 || lang == 6 || lang <= 0)
+                return -1; // invalid language
+
+            if (lang >= 7) // skip over langID 6 (unused)
+                lang--;
+            lang--; // skip over langID 0 (unused) => [0-8]
+            return lang;
+        }
+
+        protected override void SetSpindaDexData(PKM pkm, bool alreadySeen)
+        {
+            int shift = (pkm.Gender & 1) | (pkm.IsShiny ? 2 : 0);
+            if (alreadySeen) // update?
+            {
+                var flag1 = (1 << (shift + 4));
+                if ((SAV.Data[PokeDex + 0x84] & flag1) != 0) // Already showing this one
+                    return;
+                BitConverter.GetBytes(pkm.EncryptionConstant).CopyTo(SAV.Data, PokeDex + 0x8E8 + (shift * 4));
+                SAV.Data[PokeDex + 0x84] |= (byte)(flag1 | (1 << shift));
+            }
+            else if ((SAV.Data[PokeDex + 0x84] & (1 << shift)) == 0)
+            {
+                BitConverter.GetBytes(pkm.EncryptionConstant).CopyTo(SAV.Data, PokeDex + 0x8E8 + (shift * 4));
+                SAV.Data[PokeDex + 0x84] |= (byte)(1 << shift);
+            }
+        }
+
+        // Dex Flags
+        public bool NationalDex
+        {
+            get => (SAV.Data[PokeDex + 4] & 1) == 1;
+            set => SAV.Data[PokeDex + 4] = (byte)((SAV.Data[PokeDex + 4] & 0xFE) | (value ? 1 : 0));
+        }
+
+        /// <summary>
+        /// Gets the last viewed dex entry in the Pokedex (by National Dex ID), internally called DefaultMons
+        /// </summary>
+        public uint CurrentViewedDex => BitConverter.ToUInt32(SAV.Data, PokeDex + 4) >> 9 & 0x3FF;
+
+        public IEnumerable<int> GetAllFormEntries(int spec)
+        {
+            var fc = SAV.Personal[spec].FormeCount;
+            for (int j = 1; j < fc; j++)
+            {
+                int start = j;
+                int end = j;
+                if (GetSaneFormsToIterate(spec, out int s, out int n, j))
+                {
+                    start = s;
+                    end = n;
+                }
+                start = Math.Max(1, start);
+                for (int f = start; f <= end; f++)
+                {
+                    int x = GetDexFormIndex(spec, fc, f);
+                    if (x >= 0)
+                        yield return x;
+                }
+            }
+        }
+
+        public int GetDexFormIndex(int spec, int fc, int f)
+        {
+            var index = DexFormIndexFetcher(spec, fc, f);
+            if (index < 0)
+                return index;
+            return index + SAV.MaxSpeciesID - 1;
+        }
+
+        public IEnumerable<string> GetEntryNames(IReadOnlyList<string> Species)
+        {
+            var names = new List<string>();
+            for (int i = 1; i <= SAV.MaxSpeciesID; i++)
+                names.Add($"{i:000} - {Species[i]}");
+
+            // Add Formes
+            int ctr = SAV.MaxSpeciesID;
+            for (int spec = 1; spec <= SAV.MaxSpeciesID; spec++)
+            {
+                int c = SAV.Personal[spec].FormeCount;
+                for (int f = 1; f < c; f++)
+                {
+                    int x = GetDexFormIndex(spec, c, f);
+                    if (x >= 0)
+                        names.Add($"{ctr++:000} - {Species[spec]}-{f}");
+                }
+            }
+            return names;
+        }
+
+        /// <summary>
+        /// Gets a list of Species IDs that a given dex-forme index corresponds to.
+        /// </summary>
+        /// <returns></returns>
+        private List<int> GetFormIndexBaseSpeciesList()
+        {
+            var baseSpecies = new List<int>();
+            for (int spec = 1; spec <= SAV.MaxSpeciesID; spec++)
+            {
+                int c = SAV.Personal[spec].FormeCount;
+                for (int f = 1; f < c; f++)
+                {
+                    int x = GetDexFormIndex(spec, c, f);
+                    if (x >= 0)
+                        baseSpecies.Add(spec);
+                }
+            }
+            return baseSpecies;
+        }
+
+        public int GetBaseSpeciesGenderValue(int index)
+        {
+            // meowstic special handling
+            const int meow = 678;
+            if (index == meow - 1 || (index >= SAV.MaxSpeciesID && FormBaseSpecies[index - SAV.MaxSpeciesID] == meow))
+                return index < SAV.MaxSpeciesID ? 0 : 254; // M : F
+
+            if (index < SAV.MaxSpeciesID)
+                return SAV.Personal[index + 1].Gender;
+
+            index -= SAV.MaxSpeciesID;
+            int spec = FormBaseSpecies[index];
+            return SAV.Personal[spec].Gender;
+        }
+
+        public int GetBaseSpecies(int index)
+        {
+            if (index <= SAV.MaxSpeciesID)
+                return index;
+
+            return FormBaseSpecies[index - SAV.MaxSpeciesID - 1];
+        }
+
+        protected override void SetAllDexFlagsLanguage(int bit, int lang, bool value = true)
+        {
+            lang = GetDexLangFlag(lang);
+            if (lang < 0)
+                return;
+
+            int lbit = (bit * DexLangIDCount) + lang;
+            if (lbit < DexLangFlagByteCount << 3) // Sanity check for max length of region
+                SetFlag(PokeDexLanguageFlags, lbit, value);
+        }
+
+        public bool[] GetLanguageBitflags(int species)
+        {
+            var result = new bool[DexLangIDCount];
+            int bit = species - 1;
+            for (int i = 0; i < DexLangIDCount; i++)
+            {
+                int lbit = (bit * DexLangIDCount) + i;
+                result[i] = GetFlag(PokeDexLanguageFlags, lbit);
+            }
+            return result;
+        }
+
+        public void SetLanguageBitflags(int species, bool[] value)
+        {
+            int bit = species - 1;
+            for (int i = 0; i < DexLangIDCount; i++)
+            {
+                int lbit = (bit * DexLangIDCount) + i;
+                SetFlag(PokeDexLanguageFlags, lbit, value[i]);
+            }
+        }
+
+        public void ToggleLanguageFlagsAll(bool value)
+        {
+            var arr = GetBlankLanguageBits(value);
+            for (int i = 1; i <= SAV.MaxSpeciesID; i++)
+                SetLanguageBitflags(i, arr);
+        }
+
+        public void ToggleLanguageFlagsSingle(int species, bool value)
+        {
+            var arr = GetBlankLanguageBits(value);
+            SetLanguageBitflags(species, arr);
+        }
+
+        private bool[] GetBlankLanguageBits(bool value)
+        {
+            var result = new bool[DexLangIDCount];
+            for (int i = 0; i < DexLangIDCount; i++)
+                result[i] = value;
+            return result;
+        }
+    }
+}

Tests/PKHeX.Tests/Legality/ShadowTests.cs

@@ -122,7 +122,6 @@ namespace PKHeX.Tests.Legality
             Assert.IsTrue(match, "Unable to verify lock conditions: " + teams[0].Species);
         }
 
-
         [TestMethod]
         [TestCategory(VerifyPIDCategory)]
         public void VerifyPIDResultsDelcatty()