bodygraph.cpp

#include "bodygraph.h"
#include "bodypart.h"
#include "character.h"
#include "cursesdef.h"
#include "damage.h"
#include "generic_factory.h"
#include "input_context.h"
#include "make_static.h"
#include "ui_manager.h"
#include "weather.h"

#define BPGRAPH_MAXROWS 20
#define BPGRAPH_MAXCOLS 40

static const bodygraph_id bodygraph_full_body( "full_body" );

namespace
{

generic_factory<bodygraph> bodygraph_factory( "bodygraph" );

} // namespace

/** @relates string_id */
template<>
const bodygraph &string_id<bodygraph>::obj() const
{
    return bodygraph_factory.obj( *this );
}

/** @relates string_id */
template<>
bool string_id<bodygraph>::is_valid() const
{
    return bodygraph_factory.is_valid( *this );
}

void bodygraph::load_bodygraphs( const JsonObject &jo, const std::string &src )
{
    bodygraph_factory.load( jo, src );
}

void bodygraph::reset()
{
    bodygraph_factory.reset();
}

const std::vector<bodygraph> &bodygraph::get_all()
{
    return bodygraph_factory.get_all();
}

void bodygraph::finalize_all()
{
    bodygraph_factory.finalize();
}

void bodygraph::check_all()
{
    bodygraph_factory.check();
}

void bodygraph::load( const JsonObject &jo, const std::string_view )
{
    optional( jo, was_loaded, "parent_bodypart", parent_bp );
    optional( jo, was_loaded, "fill_sym", fill_sym );
    if( jo.has_string( "fill_color" ) ) {
        fill_color = color_from_string( jo.get_string( "fill_color" ) );
    }

    if( jo.has_string( "mirror" ) ) {
        mirror.reset();
        mandatory( jo, false, "mirror", mirror );
    } else if( !was_loaded || jo.has_array( "rows" ) ) {
        rows.clear();
        fill_rows.clear();
        for( const JsonValue jval : jo.get_array( "rows" ) ) {
            if( !jval.test_string() ) {
                jval.throw_error( "\"rows\" array must contain string values." );
            } else {
                rows.emplace_back( utf8_display_split( jval.get_string() ) );
            }
        }
        if( jo.has_array( "fill_rows" ) ) {
            for( const JsonValue jval : jo.get_array( "fill_rows" ) ) {
                if( !jval.test_string() ) {
                    jval.throw_error( "\"rows\" array must contain string values." );
                } else {
                    fill_rows.emplace_back( utf8_display_split( jval.get_string() ) );
                }
            }
        }
    }

    if( !was_loaded || jo.has_object( "parts" ) ) {
        parts.clear();
        for( const JsonMember memb : jo.get_object( "parts" ) ) {
            const std::string &sym = memb.name();
            JsonObject mobj = memb.get_object();
            bodygraph_part bpg;
            optional( mobj, false, "body_parts", bpg.bodyparts );
            optional( mobj, false, "sub_body_parts", bpg.sub_bodyparts );
            optional( mobj, false, "sym", bpg.sym, fill_sym );
            if( mobj.has_string( "select_color" ) ) {
                bpg.sel_color = color_from_string( mobj.get_string( "select_color" ) );
            } else {
                bpg.sel_color = fill_color;
            }
            optional( mobj, false, "nested_graph", bpg.nested_graph );
            parts.emplace( sym, bpg );
        }
    }
}

void bodygraph::finalize()
{
    if( rows.size() > BPGRAPH_MAXROWS ) {
        debugmsg( "body_graph \"%s\" defines more rows than the maximum (%d).", id.c_str(),
                  BPGRAPH_MAXROWS );
    }

    if( !fill_rows.empty() &&  fill_rows.size() != rows.size() ) {
        debugmsg( "body_graph \"%s\" defines a different number of fill_rows than rows (%d vs. %d).",
                  id.c_str(),
                  fill_rows.size(), rows.size() );
    }

    int width = -1;
    bool w_warned = false;
    for( size_t i = 0; i < rows.size(); i++ ) {
        std::vector<std::string> &r = rows[i];
        int w = r.size();
        if( width == -1 ) {
            width = w;
        } else if( !w_warned && width != w ) {
            debugmsg( "body_graph \"%s\" defines rows with different widths.", id.c_str() );
            w_warned = true;
        } else if( !w_warned && w > BPGRAPH_MAXCOLS ) {
            debugmsg( "body_graph \"%s\" defines rows with more columns than the maximum (%d).", id.c_str(),
                      BPGRAPH_MAXCOLS );
            w_warned = true;
        }

        r.insert( r.begin(), ( BPGRAPH_MAXCOLS - w ) / 2, " " );
        r.insert( r.end(), BPGRAPH_MAXCOLS - r.size(), " " );

        if( ! fill_rows.empty() ) {
            std::vector<std::string> &fr = fill_rows[i];
            if( fr.size() != r.size() ) {
                debugmsg( "body_graph \"%s\" defines a different number of columns in fill_rows than in rows (%d vs. %d).",
                          id.c_str(),
                          fr.size(), w );
            }
            fr.insert( fr.begin(), ( BPGRAPH_MAXCOLS - w ) / 2, " " );
            fr.insert( fr.end(), BPGRAPH_MAXCOLS - fr.size(), " " );
        }

    }

    for( std::vector<std::vector<std::string>> temp_rows : {
             rows, fill_rows
         } ) {
        if( !temp_rows.empty() ) {
            for( int i = ( BPGRAPH_MAXROWS - temp_rows.size() ) / 2; i > 0; i-- ) {
                std::vector<std::string> r;
                r.insert( r.begin(), BPGRAPH_MAXCOLS, " " );
                temp_rows.insert( temp_rows.begin(), r );
            }

            for( int i = temp_rows.size(); i <= BPGRAPH_MAXROWS; i++ ) {
                std::vector<std::string> r;
                r.insert( r.begin(), BPGRAPH_MAXCOLS, " " );
                temp_rows.emplace_back( r );
            }
        }
    }
}

void bodygraph::check() const
{
    if( parts.empty() ) {
        debugmsg( "body_graph \"%s\" defined without parts.", id.c_str() );
    }
    for( const auto &bgp : parts ) {
        if( utf8_width( bgp.first ) > 1 ) {
            debugmsg( "part \"%s\" in body_graph \"%s\" is more than 1 character.", bgp.first, id.c_str() );
        }
        if( bgp.second.bodyparts.empty() && bgp.second.sub_bodyparts.empty() ) {
            debugmsg( "part \"%s\" in body_graph \"%s\" contains no body_parts or sub_body_parts definitions.",
                      bgp.first, id.c_str() );
        }
    }
}

/***************************** Display routines *****************************/

/* Basic layout. Not accurate or final, but illustrates the basic idea.

     parts list                      body graph                  part info
<- variable width -><------------ fixed width (40) --------><- variable width ->

+------------------+----------------Body Status-------------+------------------+
| >Head            |                                        | Worn:            |
|  Torso           |                     O                  |  Baseball cap,   |
|  L. Arm          |                   #####                |  Eyeglasses      |
|  R. Arm          |                  #######               | Coverage: ~60%   |
|  L. Hand         |                 ## ### ##              | Encumbrance: 8   |
|  R. Hand         |                 #  ###  #              | Protection:      |
...

*/

using part_tuple =
    std::tuple<bodypart_id, const sub_body_part_type *, const bodygraph_part *, bool>;

struct bodygraph_display {
    const Character *u;
    bodygraph_id id;
    input_context ctxt;
    weak_ptr_fast<ui_adaptor> ui;
    border_helper bh_borders;
    catacurses::window w_border;
    catacurses::window w_partlist;
    catacurses::window w_graph;
    catacurses::window w_info;
    // For each tuple:
    //   0 = bodypart or parent of subpart
    //   1 = subpart (if viewing a sub part)
    //   2 = bodygraph data for this part
    //   3 = part is present on character
    std::vector<part_tuple> partlist;
    bodygraph_info info;
    std::vector<std::string> info_txt;
    int all_height = 0;
    int all_width = 0;
    int partlist_width = 0;
    int info_width = 0;
    int sel_part = 0;
    int top_part = 0;
    int top_info = 0;

    bodygraph_display() = delete;
    bodygraph_display( const bodygraph_display & ) = delete;
    bodygraph_display( const bodygraph_display && ) = delete;
    explicit bodygraph_display( const Character *u, const bodygraph_id &id );

    shared_ptr_fast<ui_adaptor> create_or_get_ui_adaptor();
    void prepare_partlist();
    void prepare_infolist();
    void prepare_infotext( bool reset_pos );
    void init_ui_windows();
    void draw_borders();
    void draw_partlist();
    void draw_graph();
    void draw_info();
    void display();
};

bodygraph_display::bodygraph_display( const Character *u, const bodygraph_id &id ) :
    u( u ), id( id ), ctxt( "BODYGRAPH" )
{
    if( id.is_null() ) {
        this->id = bodygraph_full_body;
    }

    ctxt.register_navigate_ui_list();
    ctxt.register_leftright();
    ctxt.register_action( "SCROLL_INFOBOX_UP" );
    ctxt.register_action( "SCROLL_INFOBOX_DOWN" );
    ctxt.register_action( "PAGE_UP" );
    ctxt.register_action( "PAGE_DOWN" );
    ctxt.register_action( "CONFIRM" );
    ctxt.register_action( "QUIT" );
}

void bodygraph_display::init_ui_windows()
{
    partlist_width = 18;
    info_width = 18;
    all_height = clamp( BPGRAPH_MAXROWS + 24, 0, TERMY );

    int base_width = BPGRAPH_MAXCOLS + partlist_width + info_width + 4;
    all_width = clamp( base_width + 40, 0, TERMX );
    // distribute extra horizontal space to the parts/info columns
    for( int i = base_width; i < all_width; i++ ) {
        if( i % 4 == 0 ) {
            partlist_width++;
        } else {
            info_width++;
        }
    }

    point top_left( TERMX / 2 - all_width / 2, TERMY / 2 - all_height / 2 );

    w_border = catacurses::newwin( all_height, all_width, top_left );
    //NOLINTNEXTLINE(cata-use-named-point-constants)
    w_partlist = catacurses::newwin( all_height - 2, partlist_width, top_left + point( 1, 1 ) );
    int graph_vpad = clamp<int>( ( ( all_height - 3 ) - BPGRAPH_MAXROWS ) / 2, 0, all_height );
    w_graph = catacurses::newwin( BPGRAPH_MAXROWS, BPGRAPH_MAXCOLS,
                                  top_left + point( 2 + partlist_width, graph_vpad + 2 ) );
    w_info = catacurses::newwin( all_height - 2, info_width,
                                 top_left + point( 3 + partlist_width + BPGRAPH_MAXCOLS, 1 ) );

    bh_borders = border_helper();
    bh_borders.add_border().set( top_left, { all_width, all_height } );
    bh_borders.add_border().set( top_left + point( partlist_width + 1, 0 ), { BPGRAPH_MAXCOLS + 2, all_height } );
}

void bodygraph_display::draw_borders()
{
    bh_borders.draw_border( w_border, c_white );

    const int first_win_width = partlist_width;
    auto center_txt_start = [&first_win_width]( const std::string_view txt ) {
        return 2 + first_win_width + ( BPGRAPH_MAXCOLS / 2 - utf8_width( txt, true ) / 2 );
    };

    // window title
    const std::string title_txt = string_format( "< %s >", colorize( _( "Body status" ), c_yellow ) );
    trim_and_print( w_border, point( center_txt_start( title_txt ), 0 ),
                    BPGRAPH_MAXCOLS, c_white, title_txt );

    // body part subtitle
    if( id->parent_bp.has_value() ) {
        const std::string bpname = string_format( "\\_ %s _/",
                                   colorize( to_upper_case( id->parent_bp.value()->name.translated() ), c_yellow ) );
        trim_and_print( w_border, point( center_txt_start( bpname ), 1 ),
                        BPGRAPH_MAXCOLS, c_white, bpname );
    }

    scrollbar()
    .border_color( c_white )
    .offset_x( 0 )
    .offset_y( 1 )
    .content_size( partlist.size() )
    .viewport_pos( top_part )
    .viewport_size( all_height - 2 )
    .apply( w_border );

    scrollbar()
    .border_color( c_white )
    .offset_x( all_width - 1 )
    .offset_y( 1 )
    .content_size( info_txt.size() )
    .viewport_pos( top_info )
    .viewport_size( all_height - 2 )
    .apply( w_border );

    wnoutrefresh( w_border );
}

void bodygraph_display::draw_partlist()
{
    werase( w_partlist );
    int y = 0;
    for( int i = top_part; y < all_height - 2 && i < static_cast<int>( partlist.size() ); i++ ) {
        const auto bgt = partlist[i];
        std::string txt = !std::get<1>( bgt ) ?
                          std::get<0>( bgt )->name.translated() :
                          std::get<1>( bgt )->name.translated();
        txt = trim_by_length( uppercase_first_letter( txt ), partlist_width - 2 );
        txt = left_justify( txt, partlist_width - 2, true );
        txt.insert( 0, colorize( i == sel_part ? ">" : " ", c_yellow ) );
        txt.append( !std::get<2>( bgt )->nested_graph.is_null() ?
                    colorize( ">", i == sel_part ? hilite( c_light_green ) : c_light_green ) : " " );
        nc_color clr = std::get<3>( bgt ) ? c_white : c_dark_gray;
        trim_and_print( w_partlist, point( 0, y++ ), partlist_width,
                        i == sel_part ? hilite( clr ) : clr, txt );
    }
    wnoutrefresh( w_partlist );
}

static const bodygraph_id &get_bg_rows( const bodygraph_id &bgid )
{
    if( !!bgid->mirror ) {
        return get_bg_rows( bgid->mirror.value() );
    }
    return bgid;
}

void bodygraph_display::draw_graph()
{
    werase( w_graph );

    const bodygraph_part *selected_graph = std::get<2>( partlist[sel_part] );
    auto process_sym = [&]( const bodygraph_part * bgp, const std::string & sym ) {
        return colorize( sym, bgp != nullptr && selected_graph == bgp ?
                         selected_graph->sel_color : id->fill_color );
    };
    std::vector<std::string> rows = get_bodygraph_lines( *u, process_sym, id );
    for( int y = 0; static_cast<size_t>( y ) < rows.size(); y++ ) {
        trim_and_print( w_graph, point( 0, y ), BPGRAPH_MAXCOLS, c_white, rows[y] );
    }

    wnoutrefresh( w_graph );
}

void bodygraph_display::draw_info()
{
    werase( w_info );
    if( std::get<3>( partlist[sel_part] ) ) {
        int y = 0;
        for( unsigned i = top_info; i < info_txt.size() && y < all_height - 2; i++, y++ ) {
            if( info_txt[i] == "--" ) {
                for( int x = 1; x < info_width - 2; x++ ) {
                    mvwputch( w_info, point( x, y ), c_dark_gray, LINE_OXOX );
                }
            } else {
                trim_and_print( w_info, point( 1, y ), info_width - 2, c_white, info_txt[i] );
            }
        }
    }
    wnoutrefresh( w_info );
}

void bodygraph_display::prepare_partlist()
{
    partlist.clear();
    for( const auto &bgp : id->parts ) {
        for( const bodypart_id &bid : bgp.second.bodyparts ) {
            partlist.emplace_back( bid, static_cast<const sub_body_part_type *>( nullptr ),
                                   &bgp.second, u->has_part( bid, body_part_filter::equivalent ) );
        }
        for( const sub_bodypart_id &sid : bgp.second.sub_bodyparts ) {
            const bodypart_id bid = sid->parent.id();
            partlist.emplace_back( bid, &*sid, &bgp.second, u->has_part( bid, body_part_filter::equivalent ) );
        }
    }
    std::sort( partlist.begin(), partlist.end(),
    []( const part_tuple & a, const part_tuple & b ) {
        if( !!std::get<1>( a ) && !!std::get<1>( b ) ) {
            return std::get<1>( a )->name.translated_lt( std::get<1>( b )->name );
        }
        if( std::get<0>( a )->name.translated_ne( std::get<0>( b )->name ) ) {
            return std::get<0>( a )->name.translated_lt( std::get<0>( b )->name );
        }
        if( !std::get<1>( a ) != !std::get<1>( b ) ) {
            return !std::get<1>( a );
        }
        return a != b;
    } );
}

void bodygraph_display::prepare_infolist()
{
    // reset info for a new read
    info = bodygraph_info();
    info_txt.clear();

    // if character doesn't have this part, don't generate info
    if( !std::get<3>( partlist[sel_part] ) ) {
        return;
    }

    const bodypart_id &bp = std::get<0>( partlist[sel_part] );

    // sbps will either be a group for a body part and we'll need to do averages OR a single sub part
    std::set<sub_bodypart_id> sub_parts;

    // this might be null need to test for nullbp as this all continues
    if( std::get<1>( partlist[sel_part] ) != nullptr ) {
        sub_parts.emplace( std::get<1>( partlist[sel_part] )->id );
    } else {
        for( const sub_bodypart_str_id &sbp : bp->sub_parts ) {
            // don't worry about secondary sub parts would just make things confusing
            if( !sbp->secondary ) {
                sub_parts.emplace( sbp.id() );
            }
        }
    }

    u->worn.prepare_bodymap_info( info, bp, sub_parts, *u );

    // update info text cache
    prepare_infotext( true );
}

void bodygraph_display::prepare_infotext( bool reset_pos )
{
    top_info = reset_pos ? 0 : top_info;
    if( info.specific_sublimb ) {
        // parent part
        info_txt.emplace_back( string_format( "%s: %s", colorize( _( "Sub part of" ), c_magenta ),
                                              info.parent_bp_name ) );
    }
    // part health
    std::pair<std::string, nc_color> hpbar = get_hp_bar( info.part_hp_cur, info.part_hp_max );
    info_txt.emplace_back( string_format( "%s: %s", colorize( _( "Health" ), c_magenta ),
                                          colorize( hpbar.first, hpbar.second ) ) );
    // part wetness
    info_txt.emplace_back( string_format( "%s: %d%%", colorize( _( "Wetness" ), c_magenta ),
                                          static_cast<int>( info.wetness * 100.0f ) ) );
    // part temperature
    const bool temp_precise = u->cache_has_item_with( STATIC( flag_id( "THERMOMETER" ) ) ) ||
                              u->has_flag( STATIC( json_character_flag( "THERMOMETER" ) ) );
    const units::temperature temp = units::from_fahrenheit( info.temperature.first / 50.0 );
    info_txt.emplace_back( string_format( "%s: %s", colorize( _( "Body temp" ), c_magenta ),
                                          temp_precise ? colorize( print_temperature( temp ),
                                                  info.temperature.second ) : info.temp_approx ) );
    info_txt.emplace_back( "--" );
    // part effects
    info_txt.emplace_back( string_format( "%s:", colorize( _( "Effects" ), c_magenta ) ) );
    for( const effect &eff : info.effects ) {
        if( eff.get_id()->is_show_in_info() ) {
            game_message_type rt = eff.get_id()->get_rating( eff.get_intensity() );
            info_txt.emplace_back( string_format( "  %s", colorize( eff.disp_name(),
                                                  rt == m_good ? c_green : rt == m_bad ? c_red : c_yellow ) ) );
        }
    }
    info_txt.emplace_back( "--" );
    // worn armor
    info_txt.emplace_back( string_format( "%s:", colorize( _( "Worn" ), c_magenta ) ) );
    for( const std::string &worn : info.worn_names ) {
        info_txt.emplace_back( string_format( "  %s", worn ) );
    }
    info_txt.emplace_back( "--" );
    // coverage
    info_txt.emplace_back( string_format( "%s: %d%%",
                                          colorize( info.specific_sublimb ? _( "Coverage" ) : _( "Coverage (Avg.)" ), c_magenta ),
                                          info.avg_coverage ) );
    info_txt.emplace_back( "--" );
    // encumbrance
    info_txt.emplace_back( string_format( "%s: %d", colorize( _( "Encumbrance" ), c_magenta ),
                                          info.total_encumbrance ) );
    info_txt.emplace_back( "--" );
    // protection
    info_txt.emplace_back( string_format( "%s:",
                                          colorize( info.specific_sublimb ? _( "Protection" ) : _( "Protection (Avg.)" ), c_magenta ) ) );
    std::string prot_legend = string_format( "%s %s %s", colorize( _( "worst" ), c_red ),
                              colorize( _( "median" ), c_yellow ), colorize( _( "best" ), c_light_green ) );
    int wavail = clamp( ( info_width - 2 ) - utf8_width( prot_legend, true ), 0, info_width - 2 );
    prot_legend.insert( prot_legend.begin(), wavail > 4 ? 4 : wavail, ' ' );
    info_txt.emplace_back( prot_legend );
    auto get_res_str = [&]( const damage_type_id & dt ) -> std::string {
        const std::string wval = string_format( info_width <= 18 ? "%4.1f" : "%5.2f", info.worst_case.type_resist( dt ) );
        const std::string mval = string_format( info_width <= 18 ? "%4.1f" : "%5.2f", info.median_case.type_resist( dt ) );
        const std::string bval = string_format( info_width <= 18 ? "%4.1f" : "%5.2f", info.best_case.type_resist( dt ) );
        std::string txt = string_format( "%s %s %s", colorize( wval, c_red ), colorize( mval, c_yellow ), colorize( bval, c_light_green ) );
        int res_avail = clamp( ( info_width - 2 ) - utf8_width( txt, true ), 0, info_width - 2 );
        txt.insert( txt.begin(), res_avail > 4 ? 4 : res_avail, ' ' );
        return txt;
    };
    auto get_env_str = [&]( const damage_type_id & dt ) -> std::string {
        return colorize( string_format( "    %5.2f", info.best_case.type_resist( dt ) ), c_white );
    };
    for( const damage_type &dt : damage_type::get_all() ) {
        if( info.best_case.type_resist( dt.id ) > 1 ) {
            info_txt.emplace_back( string_format( "  %s:", uppercase_first_letter( dt.name.translated() ) ) );
            info_txt.emplace_back( dt.env ? get_env_str( dt.id ) : get_res_str( dt.id ) );
        }
    }
}

shared_ptr_fast<ui_adaptor> bodygraph_display::create_or_get_ui_adaptor()
{
    shared_ptr_fast<ui_adaptor> current_ui = ui.lock();
    if( !current_ui ) {
        ui = current_ui = make_shared_fast<ui_adaptor>();
        current_ui->on_screen_resize( [this]( ui_adaptor & cui ) {
            init_ui_windows();
            info_txt.clear();
            if( !partlist.empty() && std::get<3>( partlist[sel_part] ) ) {
                prepare_infotext( false );
            }
            cui.position_from_window( w_border );
        } );
        current_ui->mark_resize();
        current_ui->on_redraw( [this]( const ui_adaptor & ) {
            draw_borders();
            draw_partlist();
            draw_graph();
            draw_info();
        } );
    }
    return current_ui;
}

void bodygraph_display::display()
{
    shared_ptr_fast<ui_adaptor> current_ui = create_or_get_ui_adaptor();
    prepare_partlist();
    prepare_infolist();

    bool done = false;
    while( !done ) {
        ui_manager::redraw();
        std::string action = ctxt.handle_input();
        if( action == "QUIT" || ( action == "LEFT" && id != bodygraph_full_body ) ) {
            done = true;
        } else if( action == "CONFIRM" || action == "RIGHT" ) {
            if( !!std::get<2>( partlist[sel_part] ) ) {
                bodygraph_id nextgraph = std::get<2>( partlist[sel_part] )->nested_graph;
                if( !nextgraph.is_null() ) {
                    display_bodygraph( *u, nextgraph );
                    prepare_infolist();
                }
            }
        } else if( action == "SCROLL_INFOBOX_UP" || action == "PAGE_UP" ) {
            top_info--;
        } else if( action == "SCROLL_INFOBOX_DOWN" || action == "PAGE_DOWN" ) {
            top_info++;
        } else if( navigate_ui_list( action, sel_part, 3, partlist.size(), true ) ) {
            prepare_infolist();
        }
        if( static_cast<int>( info_txt.size() ) >= all_height - 2 ) {
            top_info = clamp( top_info, 0, static_cast<int>( info_txt.size() ) - ( all_height - 2 ) );
        } else {
            top_info = 0;
        }
        if( sel_part < top_part ) {
            top_part = sel_part;
        } else if( sel_part >= top_part + ( all_height - 2 ) ) {
            top_part = sel_part - ( all_height - 3 );
        }
    }
}

void display_bodygraph( const Character &u, const bodygraph_id &id )
{
    bodygraph_display bgd( &u, id );
    bgd.display();
}

std::vector<std::string> get_bodygraph_lines( const Character &u,
        const bodygraph_callback &fragment_cb, const bodygraph_id &id, int width, int height )
{
    width = ( width <= 0 || width > BPGRAPH_MAXCOLS ) ? BPGRAPH_MAXCOLS : width;
    height = ( height <= 0 || height > BPGRAPH_MAXROWS ) ? BPGRAPH_MAXROWS : height;

    std::vector<std::string> ret;

    // Bodypart not present on character
    if( !!id->parent_bp && !u.has_part( *id->parent_bp, body_part_filter::equivalent ) ) {
        std::string txt = string_format( u.is_avatar() ?
                                         //~ 1$ = 2nd person pronoun (You), 2$ = body part (left arm)
                                         _( "%1$s do not have a %2$s." ) :
                                         //~ 1$ = name of character, 2$ = body part (left arm)
                                         _( "%1$s does not have a %2$s." ), u.disp_name( false, true ),
                                         id->parent_bp->obj().name.translated() );
        for( int y = 0; y < height; y++ ) {
            if( y == height / 2 ) {
                txt.insert( txt.begin(), center_text_pos( txt, 0, width ), ' ' );
                ret.emplace_back( colorize( txt, c_light_red ) );
            } else {
                ret.emplace_back( width, ' ' );
            }
        }
        return ret;
    }

    const bool hflip = !!id->mirror;
    const bodygraph_id &rid = get_bg_rows( id );
    for( int i = 0; static_cast<size_t>( i ) < rid->rows.size() && i < height; i++ ) {
        std::string ret_row;
        int j = hflip ? rid->rows[i].size() - 1 : 0;
        for( int x = 0 ; x < width && j < BPGRAPH_MAXCOLS && j >= 0; hflip ? j-- : j++, x++ ) {
            std::string sym = id->fill_sym.empty() ? rid->rows[i][j] : id->fill_sym;
            auto iter = id->parts.find( rid->rows[i][j] );
            const bodygraph_part *bgp = nullptr;
            if( iter != id->parts.end() ) {
                bgp = &iter->second;
                bool missing_section = true;
                for( const bodypart_id &bp : iter->second.bodyparts ) {
                    if( u.has_part( bp, body_part_filter::equivalent ) ) {
                        missing_section = false;
                    }
                }
                for( const sub_bodypart_id &sp : iter->second.sub_bodyparts ) {
                    if( u.has_part( sp->parent, body_part_filter::equivalent ) ) {
                        missing_section = false;
                    }
                }
                sym = missing_section ? " " : ( id->fill_rows.empty() ? iter->second.sym : id->fill_rows[i][j] );
            }
            if( rid->rows[i][j] == " " ) {
                sym = " ";
            }
            ret_row.append( fragment_cb( bgp, sym ) );
        }
        ret.emplace_back( ret_row );
    }
    return ret;
}