From 99a47b91b1c3963e16238b2757e86aa8b9c71038 Mon Sep 17 00:00:00 2001
From: "U-N\\N" <zczczc1680@gmail.com>
Date: Thu, 2 Jul 2020 01:12:48 +0200
Subject: [PATCH] fix transparency

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

diff --git a/src/map.cpp b/src/map.cpp
index cb4ffcf43187a..8a9dc81e0f24d 100644
--- a/src/map.cpp
+++ b/src/map.cpp
@@ -5342,7 +5342,7 @@ void map::remove_field( const tripoint &p, const field_type_id &field_to_remove
                                                   p.y / SEEX ) * MAPSIZE ) ) );
         }
         const auto &fdata = field_to_remove.obj();
-        if( fdata.is_transparent() ) {
+        if( !fdata.is_transparent() ) {
             set_transparency_cache_dirty( p.z );
         }
         if( fdata.is_dangerous() ) {