From caa46020a302b41603e7be1ac388d8b45429fe76 Mon Sep 17 00:00:00 2001
From: Crsky <crskycode@hotmail.com>
Date: Thu, 11 Jun 2026 20:02:25 +0800
Subject: [PATCH] fix: DxLib.EncryptedStream.ReadByte implementation

---
 ArcFormats/DxLib/ArcDX.cs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/ArcFormats/DxLib/ArcDX.cs b/ArcFormats/DxLib/ArcDX.cs
index 8f25ae26..3980b304 100644
--- a/ArcFormats/DxLib/ArcDX.cs
+++ b/ArcFormats/DxLib/ArcDX.cs
@@ -563,10 +563,11 @@ namespace GameRes.Formats.DxLib
 
         public override int ReadByte ()
         {
+            long pos = Position;
             int b = BaseStream.ReadByte();
             if (m_key.Length !=0)
             {
-                int key_pos = (int)((m_base_pos + Position) % m_key.Length);
+                int key_pos = (int)((m_base_pos + pos) % m_key.Length);
                 if (-1 != b)
                 {
                     b ^= m_key[key_pos];