Provide ability to execute an action from the keybindings menu

data/raw/keybindings.json

@@ -2379,6 +2379,13 @@
     "name": "Add global keybinding",
     "bindings": [ { "input_method": "keyboard", "key": "=" } ]
   },
+  {
+    "type": "keybinding",
+    "id": "EXECUTE",
+    "category": "HELP_KEYBINDINGS",
+    "name": "Execute action keybinding",
+    "bindings": [ { "input_method": "keyboard", "key": "." } ]
+  },
   {
     "type": "keybinding",
     "id": "ADD_ZONE",

src/handle_action.cpp

@@ -1546,6 +1546,15 @@ bool game::handle_action()
 #endif
         }
 
+        if( act == ACTION_KEYBINDINGS ) {
+            u.clear_destination();
+            destination_preview.clear();
+            act = ctxt.display_menu( true );
+            if( act == ACTION_NULL ) {
+                return false;
+            }
+        }
+
         if( can_action_change_worldstate( act ) ) {
             user_action_counter += 1;
         }
@@ -1676,6 +1685,7 @@ bool game::handle_action()
                 break; // dummy entries
             case ACTION_ACTIONMENU:
             case ACTION_MAIN_MENU:
+            case ACTION_KEYBINDINGS:
                 break; // handled above
 
             case ACTION_TIMEOUT:
@@ -2266,11 +2276,6 @@ bool game::handle_action()
                 refresh_all();
                 break;
 
-            case ACTION_KEYBINDINGS:
-                ctxt.display_menu();
-                refresh_all();
-                break;
-
             case ACTION_OPTIONS:
                 get_options().show( true );
                 g->init_ui( true );

src/input.cpp

@@ -975,12 +975,13 @@ cata::optional<tripoint> input_context::get_direction( const std::string &action
 // alternative hotkeys, which mustn't be included so that the hardcoded
 // hotkeys do not show up beside entries within the window.
 const std::string display_help_hotkeys =
-    "abcdefghijkpqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789:;'\",./<>?!@#$%^&*()_[]\\{}|`~";
+    "abcdefghijkpqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789:;'\",/<>?!@#$%^&*()_[]\\{}|`~";
 
-void input_context::display_menu()
+action_id input_context::display_menu( const bool permit_execute_action )
 {
-    // Shamelessly stolen from help.cpp
+    action_id action_to_execute = ACTION_NULL;
 
+    // Shamelessly stolen from help.cpp
     input_context ctxt( "HELP_KEYBINDINGS" );
     ctxt.register_action( "UP", translate_marker( "Scroll up" ) );
     ctxt.register_action( "DOWN", translate_marker( "Scroll down" ) );
@@ -989,6 +990,7 @@ void input_context::display_menu()
     ctxt.register_action( "REMOVE" );
     ctxt.register_action( "ADD_LOCAL" );
     ctxt.register_action( "ADD_GLOBAL" );
+    ctxt.register_action( "EXECUTE" );
     ctxt.register_action( "QUIT" );
     ctxt.register_action( "ANY_INPUT" );
 
@@ -1011,8 +1013,8 @@ void input_context::display_menu()
     bool changed = false;
     // keybindings before the user changed anything.
     input_manager::t_action_contexts old_action_contexts( inp_mngr.action_contexts );
-    // current status: adding/removing/showing keybindings
-    enum { s_remove, s_add, s_add_global, s_show } status = s_show;
+    // current status: adding/removing/executing/showing keybindings
+    enum { s_remove, s_add, s_add_global, s_execute, s_show } status = s_show;
     // copy of registered_actions, but without the ANY_INPUT and COORDINATE, which should not be shown
     std::vector<std::string> org_registered_actions( registered_actions );
     org_registered_actions.erase( std::remove_if( org_registered_actions.begin(),
@@ -1037,6 +1039,9 @@ void input_context::display_menu()
     legend += colorize( _( "Keybinding active only on this screen" ), local_key ) + "\n";
     legend += colorize( _( "Keybinding active globally" ), global_key ) + "\n";
     legend += _( "Press - to remove keybinding\nPress + to add local keybinding\nPress = to add global keybinding\n" );
+    if( permit_execute_action ) {
+        legend += _( "Press . to execute action\n" );
+    }
 
     std::vector<std::string> filtered_registered_actions = org_registered_actions;
     std::string filter_phrase;
@@ -1079,6 +1084,8 @@ void input_context::display_menu()
                 mvwprintz( w_help, point( 2, i + 10 ), c_light_blue, "%c ", invlet );
             } else if( status == s_remove ) {
                 mvwprintz( w_help, point( 2, i + 10 ), c_light_blue, "%c ", invlet );
+            } else if( status == s_execute ) {
+                mvwprintz( w_help, point( 2, i + 10 ), c_white, "%c ", invlet );
             } else {
                 mvwprintz( w_help, point( 2, i + 10 ), c_blue, "  " );
             }
@@ -1117,14 +1124,16 @@ void input_context::display_menu()
         }
 
         // In addition to the modifiable hotkeys, we also check for hardcoded
-        // keys, e.g. '+', '-', '=', in order to prevent the user from
+        // keys, e.g. '+', '-', '=', '.' in order to prevent the user from
         // entering an unrecoverable state.
         if( action == "ADD_LOCAL" || raw_input_char == '+' ) {
             status = s_add;
         } else if( action == "ADD_GLOBAL" || raw_input_char == '=' ) {
             status = s_add_global;
         } else if( action == "REMOVE" || raw_input_char == '-' ) {
             status = s_remove;
+        } else if( ( action == "EXECUTE" || raw_input_char == '.' ) && permit_execute_action ) {
+            status = s_execute;
         } else if( action == "ANY_INPUT" ) {
             const size_t hotkey_index = hotkeys.find_first_of( raw_input_char );
             if( hotkey_index == std::string::npos ) {
@@ -1198,6 +1207,9 @@ void input_context::display_menu()
                     inp_mngr.add_input_for_action( action_id, category_to_access, new_event );
                     changed = true;
                 }
+            } else if( status == s_execute && permit_execute_action ) {
+                action_to_execute = look_up_action( action_id );
+                break;
             }
             status = s_show;
         } else if( action == "DOWN" ) {
@@ -1248,6 +1260,8 @@ void input_context::display_menu()
     }
     werase( w_help );
     wrefresh( w_help );
+
+    return action_to_execute;
 }
 
 input_event input_context::get_raw_input()

src/input.h

@@ -15,6 +15,8 @@
 
 #include "point.h"
 
+enum action_id : int;
+
 namespace cata
 {
 template<typename T>
@@ -624,8 +626,10 @@ class input_context
         /**
          * Displays the possible actions in the current context and their
          * keybindings.
+         * @param permit_execute_action If `true` the function allows the user to specify an action to execute
+         * @returns action_id of any action the user specified to execute, or ACTION_NULL if none
          */
-        void display_menu();
+        action_id display_menu( bool permit_execute_action = false );
 
         /**
          * Temporary method to retrieve the raw input received, so that input_contexts