Allow randomizing starting hour through options (#63623)

* Allow randomizing starting hour through options

* Remove 'override?' bool variable

* Update option description

* One space for cland tidy

src/options.cpp

@@ -2502,8 +2502,8 @@ void options_manager::add_options_world_default()
     add_empty_line();
 
     add( "INITIAL_TIME", "world_default", to_translation( "Initial time" ),
-         to_translation( "Initial starting time of day on character generation." ),
-         0, 23, 8
+         to_translation( "Initial starting time of day on character generation.  Value -1 randomizes the starting time and overrides scenario setting." ),
+         -1, 23, 8
        );
 
     add( "INITIAL_DAY", "world_default", to_translation( "Initial day" ),

src/scenario.cpp

@@ -547,9 +547,11 @@ time_point scenario::start_of_game() const
 {
     time_point ret;
 
+    const int options_start_hour = get_option<int>( "INITIAL_TIME" );
+
     if( custom_start_date() ) {
         ret = calendar::turn_zero
-              + 1_hours * start_hour()
+              + 1_hours * ( options_start_hour == -1 ? rng( 0, 23 ) : start_hour() )
               + 1_days * start_day()
               + 1_days * get_option<int>( "SEASON_LENGTH" ) * start_season()
               + calendar::year_length() * ( start_year() - 1 );
@@ -560,7 +562,7 @@ time_point scenario::start_of_game() const
         }
     } else {
         ret = start_of_cataclysm()
-              + 1_hours * get_option<int>( "INITIAL_TIME" )
+              + 1_hours * ( options_start_hour == -1 ? rng( 0, 23 ) : options_start_hour )
               + 1_days * get_option<int>( "SPAWN_DELAY" );
     }
     return ret;