From 7911782a3b1ecac21b8e03129b3e74e4e63e8f54 Mon Sep 17 00:00:00 2001
From: Jonathan <jonno.5000@gmail.com>
Date: Tue, 14 Jun 2022 19:37:36 -0400
Subject: [PATCH] only use alias data if it's classname or if it's not
 overridden

---
 qbsp/map.cc | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/qbsp/map.cc b/qbsp/map.cc
index e9bdb541..0e4bcb0c 100644
--- a/qbsp/map.cc
+++ b/qbsp/map.cc
@@ -1660,7 +1660,9 @@ bool ParseEntity(parser_t &parser, mapentity_t *entity)
 
     if (alias_it != options.loaded_entity_defs.end()) {
         for (auto &pair : alias_it->second) {
-            entity->epairs.set(pair.first, pair.second);
+            if (pair.first == "classname" || !entity->epairs.has(pair.first)) {
+                entity->epairs.set(pair.first, pair.second);
+            }
         }
     }