Craft Gui show amounts (#43393)

src/crafting_gui.cpp

@@ -19,6 +19,7 @@
 #include "crafting.h"
 #include "cursesdef.h"
 #include "input.h"
+#include "inventory.h"
 #include "item.h"
 #include "itype.h"
 #include "json.h"
@@ -533,12 +534,34 @@ const recipe *select_crafting_recipe( int &batch_size )
                                         _( "Batch time savings: <color_cyan>%s</color>" ),
                                         current[line]->batch_savings_string() );
 
+                const int makes = current[line]->makes_amount();
+                if( makes > 1 ) {
+                    ypos += fold_and_print( w_data, point( xpos, ypos ), pane, col,
+                                            _( "Recipe makes: <color_cyan>%d</color>" ),
+                                            makes );
+                }
+
                 print_colored_text(
                     w_data, point( xpos, ypos++ ), col, col,
                     string_format( _( "Dark craftable?  <color_cyan>%s</color>" ),
                                    current[line]->has_flag( flag_BLIND_EASY ) ? _( "Easy" ) :
                                    current[line]->has_flag( flag_BLIND_HARD ) ? _( "Hard" ) :
                                    _( "Impossible" ) ) );
+
+                std::string nearby_string;
+                const int nearby_amount = crafting_inv.count_item( current[line]->result() );
+
+                if( nearby_amount == 0 ) {
+                    nearby_string = "<color_light_gray>0</color>";
+                } else if( nearby_amount > 9000 ) {
+                    // at some point you get too many to count at a glance and just know you have a lot
+                    nearby_string = _( "<color_red>It's Over 9000!!!</color>" );
+                } else {
+                    nearby_string = string_format( "<color_yellow>%d</color>", nearby_amount );
+                }
+                ypos += fold_and_print( w_data, point( xpos, ypos ), pane, col,
+                                        _( "Nearby: %s" ), nearby_string );
+
                 const bool can_craft_this = available[line].can_craft;
                 if( can_craft_this && !available[line].can_craft_non_rotten ) {
                     ypos += fold_and_print( w_data, point( xpos, ypos ), pane, col,

src/inventory.cpp

@@ -1034,6 +1034,20 @@ enchantment inventory::get_active_enchantment_cache( const Character &owner ) co
     return temp_cache;
 }
 
+int inventory::count_item( const itype_id &item_type ) const
+{
+    int num = 0;
+    const itype_bin bin = get_binned_items();
+    if( bin.find( item_type ) == bin.end() ) {
+        return num;
+    }
+    const std::list<const item *> items = get_binned_items().find( item_type )->second;
+    for( const item *it : items ) {
+        num += it->count();
+    }
+    return num;
+}
+
 void inventory::assign_empty_invlet( item &it, const Character &p, const bool force )
 {
     const std::string auto_setting = get_option<std::string>( "AUTO_INV_ASSIGN" );

src/inventory.h

@@ -232,6 +232,8 @@ class inventory : public visitable<inventory>
         // gets a singular enchantment that is an amalgamation of all items that have active enchantments
         enchantment get_active_enchantment_cache( const Character &owner ) const;
 
+        int count_item( const itype_id &item_type ) const;
+
     private:
         invlet_favorites invlet_cache;
         char find_usable_cached_invlet( const itype_id &item_type );

src/recipe.cpp

@@ -500,7 +500,7 @@ item recipe::create_result() const
     if( !newit.craft_has_charges() ) {
         newit.charges = 0;
     } else if( result_mult != 1 ) {
-        // TODO: Make it work for charge-less items
+        // TODO: Make it work for charge-less items (update makes amount)
         newit.charges *= result_mult;
     }
 
@@ -934,6 +934,18 @@ bool recipe::hot_result() const
     return false;
 }
 
+int recipe::makes_amount() const
+{
+    int makes;
+    if( charges.has_value() ) {
+        makes = charges.value();
+    } else {
+        makes = item::find_type( result_ )->charges_default();
+    }
+    // return either charges * mult or 1
+    return makes ? makes * result_mult : 1 ;
+}
+
 void recipe::incorporate_build_reqs()
 {
     if( !blueprint_reqs ) {

src/recipe.h

@@ -234,6 +234,9 @@ class recipe
 
         bool hot_result() const;
 
+        // Returns the ammount or charges recipe will produce.
+        int makes_amount() const;
+
     private:
         void incorporate_build_reqs();
         void add_requirements( const std::vector<std::pair<requirement_id, int>> &reqs );