From 612130927b2f4a5764b10a9860a84b115fca4460 Mon Sep 17 00:00:00 2001
From: Kevin Granade <kevin.granade@gmail.com>
Date: Sun, 22 Dec 2019 02:46:48 +0000
Subject: [PATCH] Fix reversed boolean check for map memory cache

---
 src/cata_tiles.cpp | 8 ++++----
 src/map.cpp        | 2 +-
 2 files changed, 5 insertions(+), 5 deletions(-)

diff --git a/src/cata_tiles.cpp b/src/cata_tiles.cpp
index 1d47d43202dcb..8a0e5bda026a5 100644
--- a/src/cata_tiles.cpp
+++ b/src/cata_tiles.cpp
@@ -2176,7 +2176,7 @@ bool cata_tiles::draw_terrain( const tripoint &p, const lit_level ll, int &heigh
             // do something to get other terrain orientation values
         }
         const std::string &tname = t.id().str();
-        if( !g->m.check_and_set_seen_cache( p ) ) {
+        if( g->m.check_and_set_seen_cache( p ) ) {
             g->u.memorize_tile( g->m.getabs( p ), tname, subtile, rotation );
         }
         // draw the actual terrain if there's no override
@@ -2340,7 +2340,7 @@ bool cata_tiles::draw_furniture( const tripoint &p, const lit_level ll, int &hei
         int rotation = 0;
         get_tile_values( f, neighborhood, subtile, rotation );
         const std::string &fname = f.id().str();
-        if( !g->m.check_and_set_seen_cache( p ) ) {
+        if( g->m.check_and_set_seen_cache( p ) ) {
             g->u.memorize_tile( g->m.getabs( p ), fname, subtile, rotation );
         }
         // draw the actual furniture if there's no override
@@ -2414,7 +2414,7 @@ bool cata_tiles::draw_trap( const tripoint &p, const lit_level ll, int &height_3
         int rotation = 0;
         get_tile_values( tr, neighborhood, subtile, rotation );
         const std::string trname = tr.id().str();
-        if( !g->m.check_and_set_seen_cache( p ) ) {
+        if( g->m.check_and_set_seen_cache( p ) ) {
             g->u.memorize_tile( g->m.getabs( p ), trname, subtile, rotation );
         }
         // draw the actual trap if there's no override
@@ -2580,7 +2580,7 @@ bool cata_tiles::draw_vpart( const tripoint &p, lit_level ll, int &height_3d,
         const int rotation = veh.face.dir();
         const std::string vpname = "vp_" + vp_id.str();
         if( !veh.forward_velocity() && !veh.player_in_control( g->u ) &&
-            !g->m.check_and_set_seen_cache( p ) ) {
+            g->m.check_and_set_seen_cache( p ) ) {
             g->u.memorize_tile( g->m.getabs( p ), vpname, subtile, rotation );
         }
         if( !overridden ) {
diff --git a/src/map.cpp b/src/map.cpp
index bb7a51c724f4e..3ed741cfb49b3 100644
--- a/src/map.cpp
+++ b/src/map.cpp
@@ -5730,7 +5730,7 @@ bool map::draw_maptile( const catacurses::window &w, const player &u, const trip
         }
     }
 
-    if( !check_and_set_seen_cache( p ) ) {
+    if( check_and_set_seen_cache( p ) ) {
         g->u.memorize_symbol( getabs( p ), memory_sym );
     }