using System; using System.Linq; using static PKHeX.Core.GroundTileAllowed; namespace PKHeX.Core; /// /// Generation 4 Static Encounter /// /// public sealed record EncounterStatic4(GameVersion Version) : EncounterStatic(Version), IGroundTypeTile { public override int Generation => 4; public override EntityContext Context => EntityContext.Gen4; /// Indicates if the encounter is a Roamer (variable met location) public bool Roaming { get; init; } /// values permitted for the encounter. public GroundTileAllowed GroundTile { get; init; } = None; protected override bool IsMatchLocation(PKM pk) { if (!Roaming) return base.IsMatchLocation(pk); // Met location is lost on transfer if (pk is not G4PKM pk4) return true; var locs = GetRoamLocations(Species, pk4.GroundTile); return locs.Contains(pk4.Met_Location); } protected override bool IsMatchEggLocation(PKM pk) { if (!EggEncounter) return base.IsMatchEggLocation(pk); var eggloc = pk.Egg_Location; // Transferring 4->5 clears Pt/HG/SS location value and keeps Faraway Place if (pk is not G4PKM pk4) { if (eggloc == Locations.LinkTrade4) return true; var cmp = Locations.IsPtHGSSLocationEgg(EggLocation) ? Locations.Faraway4 : EggLocation; return eggloc == cmp; } if (!pk4.IsEgg) // hatched return eggloc == EggLocation || eggloc == Locations.LinkTrade4; // Unhatched: if (eggloc != EggLocation) return false; if (pk4.Met_Location is not (0 or Locations.LinkTrade4)) return false; return true; } protected override void ApplyDetails(ITrainerInfo tr, EncounterCriteria criteria, PKM pk) { base.ApplyDetails(tr, criteria, pk); SanityCheckVersion(pk); } private void SanityCheckVersion(PKM pk) { // Unavailable encounters in DP, morph them to Pt so they're legal. switch (Species) { case (int)Core.Species.Darkrai when Location == 079: // DP Darkrai case (int)Core.Species.Shaymin when Location == 063: // DP Shaymin pk.Version = (int)GameVersion.Pt; return; } } protected override bool IsMatchLevel(PKM pk, EvoCriteria evo) { if (pk.Format != 4) // Met Level lost on PK4=>PK5 return Level <= evo.LevelMax; return pk.Met_Level == (EggEncounter ? 0 : Level); } protected override bool IsMatchPartial(PKM pk) { if (Gift && pk.Ball != Ball) return true; return base.IsMatchPartial(pk); } protected override void SetMetData(PKM pk, int level, DateTime today) { var pk4 = (PK4)pk; var type = pk4.GroundTile = GroundTile.GetIndex(); pk.Met_Location = Roaming ? GetRoamLocations(Species, type)[0] : Location; pk.Met_Level = level; pk.MetDate = today; } private static int[] GetRoamLocations(int species, GroundTileType type) => species switch { 481 or 488 or 144 or 145 or 146 => type == GroundTileType.Grass ? Roaming_MetLocation_DPPt_Grass : Roaming_MetLocation_DPPt_Surf, 243 or 244 => type == GroundTileType.Grass ? Roaming_MetLocation_HGSS_Johto_Grass : Roaming_MetLocation_HGSS_Johto_Surf, 380 or 381 => type == GroundTileType.Grass ? Roaming_MetLocation_HGSS_Kanto_Grass : Roaming_MetLocation_HGSS_Kanto_Surf, _ => throw new ArgumentOutOfRangeException(nameof(species)), }; private static readonly int[] Roaming_MetLocation_DPPt_Grass = { // Routes 201-218, 221-222 can be encountered in grass 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 36, 37, 47, // Valley Windworks 49, // Fuego Ironworks }; private static readonly int[] Roaming_MetLocation_DPPt_Surf = { // Routes 203-205, 208-210, 212-214, 218-222 can be encountered in water 18, 19, 20, 23, 24, 25, 27, 28, 29, 33, 34, 35, 36, 37, 47, // Valley Windworks 49, // Fuego Ironworks }; // Grass 29-39, 42-46, 47, 48 // Surf 30-32 34-35, 40-45, 47 // Route 45 inaccessible surf private static readonly int[] Roaming_MetLocation_HGSS_Johto_Grass = { // Routes 29-48 can be encountered in grass // Won't go to routes 40,41,47,48 177, 178, 179, 180, 181, 182, 183, 184, 185, 186, 187, 190, 191, 192, 193, 194, }; private static readonly int[] Roaming_MetLocation_HGSS_Johto_Surf = { // Routes 30-32,34-35,40-45 and 47 can be encountered in water // Won't go to routes 40,41,47,48 178, 179, 180, 182, 183, 190, 191, 192, 193, }; private static readonly int[] Roaming_MetLocation_HGSS_Kanto_Grass = { // Route 01-18,21,22,24,26 and 28 can be encountered in grass // Won't go to route 23 25 27 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 169, 170, 172, 174, 176, }; private static readonly int[] Roaming_MetLocation_HGSS_Kanto_Surf = { // Route 4,6,9,10,12,13,19-22,24,26 and 28 can be encountered in water // Won't go to route 23 25 27 152, 154, 157, 158, 160, 161, 167, 168, 169, 170, 172, 174, 176, }; }