From 0c78f715f3f9e19ef58a8ec5de5355a042dd2922 Mon Sep 17 00:00:00 2001
From: OzoneH3 <satori.jj@gmail.com>
Date: Thu, 8 Oct 2020 21:45:00 +0000
Subject: [PATCH] Display correct item info for each item in V menu. (#44665)

---
 src/game.cpp           | 12 +++++++-----
 src/map_item_stack.cpp | 11 ++++++-----
 src/map_item_stack.h   |  3 ++-
 3 files changed, 15 insertions(+), 11 deletions(-)

diff --git a/src/game.cpp b/src/game.cpp
index 53f8ea1966e1d..454cdc4ee0d5d 100644
--- a/src/game.cpp
+++ b/src/game.cpp
@@ -7740,7 +7740,7 @@ game::vmenu_ret game::list_items( const std::vector<map_item_stack> &item_list )
             if( iItemNum > 0 && activeItem ) {
                 std::vector<iteminfo> vThisItem;
                 std::vector<iteminfo> vDummy;
-                activeItem->example->info( true, vThisItem );
+                activeItem->vIG[page_num].it->info( true, vThisItem );
 
                 item_info_data dummy( "", "", vThisItem, vDummy, iScrollPos );
                 dummy.without_getch = true;
@@ -7758,8 +7758,9 @@ game::vmenu_ret game::list_items( const std::vector<map_item_stack> &item_list )
         if( iItemNum > 0 && activeItem ) {
             // print info window title: < item name >
             mvwprintw( w_item_info, point( 2, 0 ), "< " );
-            trim_and_print( w_item_info, point( 4, 0 ), width - 8, activeItem->example->color_in_inventory(),
-                            activeItem->example->display_name() );
+            trim_and_print( w_item_info, point( 4, 0 ), width - 8,
+                            activeItem->vIG[page_num].it->color_in_inventory(),
+                            activeItem->vIG[page_num].it->display_name() );
             wprintw( w_item_info, " >" );
         }
 
@@ -7804,9 +7805,10 @@ game::vmenu_ret game::list_items( const std::vector<map_item_stack> &item_list )
         } else if( action == "EXAMINE" && !filtered_items.empty() && activeItem ) {
             std::vector<iteminfo> vThisItem;
             std::vector<iteminfo> vDummy;
-            activeItem->example->info( true, vThisItem );
+            activeItem->vIG[page_num].it->info( true, vThisItem );
 
-            item_info_data info_data( activeItem->example->tname(), activeItem->example->type_name(), vThisItem,
+            item_info_data info_data( activeItem->vIG[page_num].it->tname(),
+                                      activeItem->vIG[page_num].it->type_name(), vThisItem,
                                       vDummy );
             info_data.handle_scrolling = true;
 
diff --git a/src/map_item_stack.cpp b/src/map_item_stack.cpp
index 977d15f3a3d02..8156b9090ea72 100644
--- a/src/map_item_stack.cpp
+++ b/src/map_item_stack.cpp
@@ -10,12 +10,13 @@
 #include "item_search.h"
 #include "line.h"
 
-map_item_stack::item_group::item_group() : count( 0 )
+map_item_stack::item_group::item_group() : count( 0 ), it( nullptr )
 {
 }
 
-map_item_stack::item_group::item_group( const tripoint &p, const int arg_count ) : pos( p ),
-    count( arg_count )
+map_item_stack::item_group::item_group( const tripoint &p, const int arg_count,
+                                        const item *itm ) : pos( p ),
+    count( arg_count ), it( itm )
 {
 }
 
@@ -27,7 +28,7 @@ map_item_stack::map_item_stack() : example( nullptr ), totalcount( 0 )
 map_item_stack::map_item_stack( const item *const it, const tripoint &pos ) : example( it ),
     totalcount( it->count() )
 {
-    vIG.emplace_back( pos, totalcount );
+    vIG.emplace_back( pos, totalcount, it );
 }
 
 void map_item_stack::add_at_pos( const item *const it, const tripoint &pos )
@@ -35,7 +36,7 @@ void map_item_stack::add_at_pos( const item *const it, const tripoint &pos )
     const int amount = it->count();
 
     if( vIG.empty() || vIG.back().pos != pos ) {
-        vIG.emplace_back( pos, amount );
+        vIG.emplace_back( pos, amount, it );
     } else {
         vIG.back().count += amount;
     }
diff --git a/src/map_item_stack.h b/src/map_item_stack.h
index 9f27c5ac3cd28..4436923ca07d6 100644
--- a/src/map_item_stack.h
+++ b/src/map_item_stack.h
@@ -18,10 +18,11 @@ class map_item_stack
             public:
                 tripoint pos;
                 int count;
+                const item *it;
 
                 //only expected to be used for things like lists and vectors
                 item_group();
-                item_group( const tripoint &p, int arg_count );
+                item_group( const tripoint &p, int arg_count, const item *itm );
         };
     public:
         const item *example; //an example item for showing stats, etc.