From ea86032480a10fbe0a0db885cf4a79f8f8e39c7f Mon Sep 17 00:00:00 2001
From: javierhimura <javier_himura@hotmail.com>
Date: Sat, 23 Sep 2017 21:00:57 +0200
Subject: [PATCH] Comments and a fix for AllowGen2Crystal function

---
 PKHeX.Core/Legality/Analysis.cs | 1 +
 PKHeX.Core/Legality/Checks.cs   | 1 +
 PKHeX.Core/Legality/Core.cs     | 4 ++--
 3 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/PKHeX.Core/Legality/Analysis.cs b/PKHeX.Core/Legality/Analysis.cs
index b338ab2c5..964c3a0b9 100644
--- a/PKHeX.Core/Legality/Analysis.cs
+++ b/PKHeX.Core/Legality/Analysis.cs
@@ -219,6 +219,7 @@ private void UpdateTradebackG12()
             if (pkm.Format == 2 || pkm.VC2)
             {
                 // check for impossible tradeback scenarios
+                // Korean gen2 games can't tradeback because there is no gen1 korean games released
                 if (pkm.Korean || pkm.IsEgg || pkm.HasOriginalMetLocation || pkm.Species > Legal.MaxSpeciesID_1 && !Legal.FutureEvolutionsGen1.Contains(pkm.Species))
                     pkm.TradebackStatus = TradebackType.Gen2_NotTradeback;
                 else
diff --git a/PKHeX.Core/Legality/Checks.cs b/PKHeX.Core/Legality/Checks.cs
index 2ab63405d..450ef5473 100644
--- a/PKHeX.Core/Legality/Checks.cs
+++ b/PKHeX.Core/Legality/Checks.cs
@@ -164,6 +164,7 @@ private bool verifyLanguage()
             }
             if(pkm.Format == 4 && pkm.Gen4 && (pkm.Language == 8) != (Legal.SavegameLanguage == 8))
             {
+                // Korean gen 4 games can not trade with non-korean gen 4 games, but can use palpark with any gen3 game
                 AddLine(Severity.Invalid, pkm.Language == 8 ? V610 : V611, CheckIdentifier.Language);
                 return false;
             }
diff --git a/PKHeX.Core/Legality/Core.cs b/PKHeX.Core/Legality/Core.cs
index 8269a55e2..c4d57de64 100644
--- a/PKHeX.Core/Legality/Core.cs
+++ b/PKHeX.Core/Legality/Core.cs
@@ -36,9 +36,9 @@ public static partial class Legal
         public static bool AllowGen1Tradeback { get; set; }
         public static bool AllowGen2VCTransfer => true;
         public static bool AllowGen2VCCrystal => false;
-        public static bool AllowGen2Crystal(bool Korean) => Korean && (AllowGBCartEra || AllowGen2VCCrystal);
+        public static bool AllowGen2Crystal(bool Korean) => !Korean && (AllowGBCartEra || AllowGen2VCCrystal); // Pokemon Crystal was never released in Korea
         public static bool AllowGen2Crystal(PKM pkm) => AllowGen2Crystal(pkm.Korean);
-        public static bool AllowGen2MoveReminder(PKM pkm) => !pkm.Korean && AllowGBCartEra;
+        public static bool AllowGen2MoveReminder(PKM pkm) => !pkm.Korean && AllowGBCartEra; // Pokemon Stadium 2 was never released in Korea
 
         public static bool CheckWordFilter { get; set; } = true;