From 4561c7192238483ec3c68240deefd2f3b14b8c79 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20T=C5=AFma?= <tumic@cbox.cz>
Date: Wed, 23 Mar 2022 08:04:05 +0100
Subject: [PATCH] Fixed broken handling of maps with basemaps

---
 src/map/IMG/trefile.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/map/IMG/trefile.cpp b/src/map/IMG/trefile.cpp
index 8659e8b7..6c194b7b 100644
--- a/src/map/IMG/trefile.cpp
+++ b/src/map/IMG/trefile.cpp
@@ -290,7 +290,7 @@ void TREFile::clear()
 int TREFile::level(int bits, bool baseMap)
 {
 	if (baseMap) {
-		if (!_isBaseMap && _levels.first().bits > bits)
+		if (!_isBaseMap && _levels.at(_firstLevel).bits > bits)
 			return -1;
 		if (_isBaseMap && bits > _levels.last().bits)
 			return -1;