using System.Linq;
namespace PKHeX.Core
{
///
/// Trade Encounter data with a fixed Catch Rate
///
///
/// Generation 1 specific value used in detecting unmodified/un-traded Generation 1 Trade Encounter data.
/// Species & Minimum level (legal) possible to acquire at.
///
public sealed record EncounterTrade1 : EncounterTradeGB
{
public override int Generation => 1;
public override int LevelMin => CanObtainMinGSC() ? LevelMinGSC : LevelMinRBY;
private readonly int LevelMinRBY;
private readonly int LevelMinGSC;
public EncounterTrade1(int species, GameVersion game, int rby, int gsc) : base(species, gsc, game)
{
TrainerNames = StringConverter12.G1TradeOTName;
LevelMinRBY = rby;
LevelMinGSC = gsc;
}
public EncounterTrade1(int species, GameVersion game, int rby) : this(species, game, rby, rby) { }
public byte GetInitialCatchRate()
{
var pt = Version == GameVersion.YW ? PersonalTable.Y : PersonalTable.RB;
return (byte)pt[Species].CatchRate;
}
protected override void ApplyDetails(ITrainerInfo sav, EncounterCriteria criteria, PKM pk)
{
base.ApplyDetails(sav, criteria, pk);
var pk1 = (PK1)pk;
pk1.Catch_Rate = GetInitialCatchRate();
}
internal bool IsNicknameValid(PKM pkm)
{
var nick = pkm.Nickname;
if (pkm.Format <= 2)
return Nicknames.Contains(nick);
// Converted string 1/2->7 to language specific value
// Nicknames can be from any of the languages it can trade between.
int lang = pkm.Language;
if (lang == 1)
{
// Special consideration for Hiragana strings that are transferred
if (Version == GameVersion.YW && Species == (int)Core.Species.Dugtrio)
return nick == "ぐりお";
return nick == Nicknames[1];
}
return GetNicknameIndex(nick) >= 2;
}
internal bool IsTrainerNameValid(PKM pkm)
{
string ot = pkm.OT_Name;
if (pkm.Format <= 2)
return ot == StringConverter12.G1TradeOTStr;
// Converted string 1/2->7 to language specific value
int lang = pkm.Language;
var tr = GetOT(lang);
return ot == tr;
}
private int GetNicknameIndex(string nickname)
{
var nn = Nicknames;
for (int i = 0; i < nn.Count; i++)
{
if (nn[i] == nickname)
return i;
}
return -1;
}
private bool CanObtainMinGSC()
{
if (!ParseSettings.AllowGen1Tradeback)
return false;
if (Version == GameVersion.BU && EvolveOnTrade)
return ParseSettings.AllowGBCartEra;
return true;
}
private bool IsMatchLevel(PKM pkm, int lvl)
{
if (pkm is not PK1)
return lvl >= LevelMinGSC;
return lvl >= LevelMin;
}
public override bool IsMatch(PKM pkm)
{
if (!IsMatchLevel(pkm, pkm.CurrentLevel)) // minimum required level
return false;
if (Version == GameVersion.BU)
{
// Encounters with this version have to originate from the Japanese Blue game.
if (!pkm.Japanese)
return false;
// Stadium 2 can transfer from GSC->RBY without a "Trade", thus allowing un-evolved outsiders
if (EvolveOnTrade && !ParseSettings.AllowGBCartEra && pkm.CurrentLevel < LevelMinRBY)
return false;
}
if (pkm is not PK1 {Gen1_NotTradeback: true} pk1)
return true;
var req = GetInitialCatchRate();
return req == pk1.Catch_Rate;
}
public bool IsMatchDeferred(PKM pk)
{
if (!IsTrainerNameValid(pk))
return true;
if (!IsNicknameValid(pk))
return true;
return false;
}
}
}