private void UpdateTradebackG12()
{
if (pkm.Format == 1)
{
if (!Legal.AllowGen1Tradeback)
{
pkm.TradebackStatus = TradebackType.Gen1_NotTradeback;
((PK1)pkm).CatchRateIsItem = false;
return;
}
// Detect tradeback status by comparing the catch rate(Gen1)/held item(Gen2) to the species in the pkm's evolution chain.
var catch_rate = ((PK1)pkm).Catch_Rate;
// For species catch rate, discard any species that has no valid encounters and a different catch rate than their pre-evolutions
var Lineage = Legal.GetLineage(pkm).Where(s => !Legal.Species_NotAvailable_CatchRate.Contains(s)).ToList();
// Dragonite's Catch Rate is different than Dragonair's in Yellow, but there is no Dragonite encounter.
var RGBCatchRate = Lineage.Any(s => catch_rate == PersonalTable.RB[s].CatchRate);
var YCatchRate = Lineage.Any(s => s != 149 && catch_rate == PersonalTable.Y[s].CatchRate);
// Krabby encounter trade special catch rate
var TradeCatchRate = ((pkm.Species == 098 || pkm.Species == 099) && catch_rate == 204);
var StadiumCatchRate = Legal.Stadium_GiftSpecies.Contains(pkm.Species) && Legal.Stadium_CatchRate.Contains(catch_rate);
bool matchAny = RGBCatchRate || YCatchRate || TradeCatchRate || StadiumCatchRate;
// If the catch rate value has been modified, the item has either been removed or swapped in Generation 2.
var HeldItemCatchRate = catch_rate == 0 || Legal.HeldItems_GSC.Any(h => h == catch_rate);
if (HeldItemCatchRate && !matchAny)
{
pkm.TradebackStatus = TradebackType.WasTradeback;
}
else if (!HeldItemCatchRate && matchAny)
{
pkm.TradebackStatus = TradebackType.Gen1_NotTradeback;
}
else
{
pkm.TradebackStatus = TradebackType.Any;
}
// Update the editing settings for the PKM to acknowledge the tradeback status if the species is changed.
((PK1)pkm).CatchRateIsItem = !pkm.Gen1_NotTradeback && HeldItemCatchRate && !matchAny;
}
else if (pkm.Format == 2 || pkm.VC2)
{
// Eggs, pokemon with non-empty Crystal met location, and generation 2 species without generation 1 preevolutions can't be traded to generation 1.
if (pkm.IsEgg || pkm.HasOriginalMetLocation || (pkm.Species > Legal.MaxSpeciesID_1 && !Legal.FutureEvolutionsGen1.Contains(pkm.Species)))
{
pkm.TradebackStatus = TradebackType.Gen2_NotTradeback;
}
else
{
pkm.TradebackStatus = TradebackType.Any;
}
}
else if (pkm.VC1)
{
// If VC2 is ever released, we can assume it will be TradebackType.Any.
// Met date cannot be used definitively as the player can change their system clock.
pkm.TradebackStatus = TradebackType.Gen1_NotTradeback;
}
else
{
pkm.TradebackStatus = TradebackType.Any;
}
}