From c970f28804fc799f4d9e233195450601ba81ed79 Mon Sep 17 00:00:00 2001
From: nillerusr <nillerusr@gmail.com>
Date: Mon, 20 Feb 2023 21:03:47 +0300
Subject: [PATCH] engine: fix Map_IsValid for mapcycle

---
 engine/modelloader.cpp | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/engine/modelloader.cpp b/engine/modelloader.cpp
index 06e5ce82..be833736 100644
--- a/engine/modelloader.cpp
+++ b/engine/modelloader.cpp
@@ -5449,6 +5449,15 @@ bool CModelLoader::Map_IsValid( char const *pMapFile, bool bQuiet /* = false */
 		V_strcpy_safe( szMapFile, szMapName360 );
 	}
 
+	bool bHaveBspFormatInPath = strcasestr(szMapFile, ".bsp");
+	bool bHaveMapsInPath = strcasestr(szMapFile, "maps/");
+
+	if( !bHaveMapsInPath )
+		snprintf(szMapFile, sizeof(szMapFile), "maps/%s", pMapFile);
+
+	if( !bHaveBspFormatInPath )
+		strncat(szMapFile, ".bsp", sizeof(szMapFile));
+
 	mapfile = g_pFileSystem->OpenEx( szMapFile, "rb", IsX360() ? FSOPEN_NEVERINPACK : 0, "GAME" );
 	if ( mapfile != FILESYSTEM_INVALID_HANDLE )
 	{