From 2ea5c3b2e9f512bc1a17f717fa1d4a382c6ed6e5 Mon Sep 17 00:00:00 2001
From: Kurt <kaphotics@gmail.com>
Date: Tue, 15 Sep 2015 23:33:02 -0700
Subject: [PATCH] Enable Egg RNG Seed Editing

Played around with a few solutions, was happiest with (the probably
slower) linq as I didn't feel like using regex.

Supports copy/paste as all the filtering is done when the text changes;
any successful update will refresh the value in the save file.
---
 PKX/f1-Main.Designer.cs |  3 ++-
 PKX/f1-Main.cs          | 22 ++++++++++++++++++++++
 2 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/PKX/f1-Main.Designer.cs b/PKX/f1-Main.Designer.cs
index b9fb80379..e9d36869c 100644
--- a/PKX/f1-Main.Designer.cs
+++ b/PKX/f1-Main.Designer.cs
@@ -3577,11 +3577,12 @@ public void InitializeComponent()
             // 
             this.TB_RNGSeed.Font = new System.Drawing.Font("Courier New", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
             this.TB_RNGSeed.Location = new System.Drawing.Point(61, 140);
+            this.TB_RNGSeed.MaxLength = 16;
             this.TB_RNGSeed.Name = "TB_RNGSeed";
-            this.TB_RNGSeed.ReadOnly = true;
             this.TB_RNGSeed.Size = new System.Drawing.Size(120, 20);
             this.TB_RNGSeed.TabIndex = 8;
             this.TB_RNGSeed.Text = "0123456789ABCDEF";
+            this.TB_RNGSeed.TextChanged += new System.EventHandler(this.updateEggRNGSeed);
             // 
             // dcpkx2
             // 
diff --git a/PKX/f1-Main.cs b/PKX/f1-Main.cs
index f24d73bdb..19c49dfb9 100644
--- a/PKX/f1-Main.cs
+++ b/PKX/f1-Main.cs
@@ -2878,6 +2878,28 @@ private void clickClone(object sender, EventArgs e)
 
             savedited = true;
         }
+        private void updateEggRNGSeed(object sender, EventArgs e)
+        {
+            // Run through a LINQ filter for fun; works fine for GUI purposes, although LINQ may not be the fastest way to do it!
+            string filterText = TB_RNGSeed.Text.Select(char.ToUpper).Where("0123456789ABCDEF".Contains).Aggregate("", (str, c) => str + c);
+            if (filterText.Length != TB_RNGSeed.Text.Length)
+            {
+                Util.Alert("Expected HEX (0-9, A-F).", "Received: " + Environment.NewLine + TB_RNGSeed.Text);
+                // Reset to Stored Value
+                TB_RNGSeed.Text = BitConverter.ToUInt64(savefile, SaveGame.Daycare + (0x7F000 * savindex) + 0x1E8).ToString("X16");
+                return; // recursively triggers this method, no need to continue
+            }
+
+            if (TB_RNGSeed.Text.Length == 0)
+            {
+                // Reset to 0
+                TB_RNGSeed.Text = 0.ToString("X16");
+                return; // recursively triggers this method, no need to continue
+            }
+
+            // Write final value back to the save
+            Array.Copy(BitConverter.GetBytes(Convert.ToUInt64(TB_RNGSeed.Text, 16)), 0, savefile, SaveGame.Daycare + 0x7F000 * savindex + 0x1E8, 0x8);
+        }
         // Generic Subfunctions // 
         private void setPokedex(byte[] pkxdata)
         {