From baac63221838b768beb904a4b7320227b49a5e8e Mon Sep 17 00:00:00 2001
From: Kurt <kaphotics@gmail.com>
Date: Sat, 14 Jul 2018 10:56:11 -0700
Subject: [PATCH] Enable editing gen1/2 hidden power type

---
 PKHeX.Core/Editing/ShowdownSet.cs                | 2 +-
 PKHeX.Core/PKM/Util/PKX.cs                       | 9 ++++++++-
 PKHeX.WinForms/Controls/PKM Editor/StatEditor.cs | 4 +---
 3 files changed, 10 insertions(+), 5 deletions(-)

diff --git a/PKHeX.Core/Editing/ShowdownSet.cs b/PKHeX.Core/Editing/ShowdownSet.cs
index 0b2123de1..496520efd 100644
--- a/PKHeX.Core/Editing/ShowdownSet.cs
+++ b/PKHeX.Core/Editing/ShowdownSet.cs
@@ -484,7 +484,7 @@ namespace PKHeX.Core
                         InvalidLines.Add($"Invalid IVs for Hidden Power Type: {type}");
                 }
                 else if (hpVal >= 0)
-                    IVs = PKX.SetHPIVs(hpVal, IVs); // Get IVs
+                    IVs = PKX.SetHPIVs(hpVal, IVs, Format); // Get IVs
                 else
                     InvalidLines.Add($"Invalid Hidden Power Type: {type}");
             }
diff --git a/PKHeX.Core/PKM/Util/PKX.cs b/PKHeX.Core/PKM/Util/PKX.cs
index 7cdcd34b7..0244693e1 100644
--- a/PKHeX.Core/PKM/Util/PKX.cs
+++ b/PKHeX.Core/PKM/Util/PKX.cs
@@ -634,9 +634,16 @@ namespace PKHeX.Core
         /// <summary>Calculate the Hidden Power Type of the entered IVs.</summary>
         /// <param name="type">Hidden Power Type</param>
         /// <param name="ivs">Individual Values (H/A/B/S/C/D)</param>
+        /// <param name="format">Generation specific format</param>
         /// <returns>Hidden Power Type</returns>
-        public static int[] SetHPIVs(int type, int[] ivs)
+        public static int[] SetHPIVs(int type, int[] ivs, int format = Generation)
         {
+            if (format <= 2)
+            {
+                ivs[1] = (ivs[1] & ~3) | (type >> 2);
+                ivs[2] = (ivs[2] & ~3) | (type & 3);
+                return ivs;
+            }
             for (int i = 0; i < 6; i++)
                 ivs[i] = (ivs[i] & 0x1E) + hpivs[type, i];
             return ivs;
diff --git a/PKHeX.WinForms/Controls/PKM Editor/StatEditor.cs b/PKHeX.WinForms/Controls/PKM Editor/StatEditor.cs
index 274a3c370..2d2665bb3 100644
--- a/PKHeX.WinForms/Controls/PKM Editor/StatEditor.cs	
+++ b/PKHeX.WinForms/Controls/PKM Editor/StatEditor.cs	
@@ -186,7 +186,7 @@ namespace PKHeX.WinForms.Controls
 
             // Change IVs to match the new Hidden Power
             int hpower = WinFormsUtil.GetIndex(CB_HPType);
-            int[] newIVs = PKX.SetHPIVs(hpower, pkm.IVs);
+            int[] newIVs = PKX.SetHPIVs(hpower, pkm.IVs, pkm.Format);
             LoadIVs(newIVs);
         }
         private void ClickStatLabel(object sender, MouseEventArgs e)
@@ -378,8 +378,6 @@ namespace PKHeX.WinForms.Controls
         {
             FLP_StatsTotal.Visible = gen >= 3;
             FLP_Characteristic.Visible = gen >= 3;
-            CB_HPType.Enabled = gen >= 3;
-            FLP_HPType.Visible = gen >= 2;
 
             switch (gen)
             {