//-------------------------------------------------------------------------
/*
Copyright (C) 2010-2019 EDuke32 developers and contributors
Copyright (C) 2019 Nuke.YKT

This file is part of NBlood.

NBlood is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License version 2
as published by the Free Software Foundation.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
*/
//-------------------------------------------------------------------------

#include "build.h"
#include "baselayer.h"
#include "keyboard.h"
#include "control.h"
#include "osd.h"
#include "compat.h"
#include "mmulti.h"
#include "common_game.h"
#include "config.h"
#include "blood.h"
#include "demo.h"
#include "gamemenu.h"
#include "globals.h"
#include "levels.h"
#include "messages.h"
#include "network.h"
#include "osdcmds.h"
#include "screen.h"
#include "sound.h"
#include "sfx.h"
#include "view.h"


static inline int osdcmd_quit(osdcmdptr_t UNUSED(parm))
{
    UNREFERENCED_CONST_PARAMETER(parm);
    OSD_ShowDisplay(0);
    QuitGame();
    return OSDCMD_OK;
}

static int osdcmd_changelevel(osdcmdptr_t parm)
{
    int32_t volume,level;
    char *p;

    if (parm->numparms != 2) return OSDCMD_SHOWHELP;

    volume = strtol(parm->parms[0], &p, 10) - 1;
    if (p[0]) return OSDCMD_SHOWHELP;
    level = strtol(parm->parms[1], &p, 10) - 1;
    if (p[0]) return OSDCMD_SHOWHELP;

    if (volume < 0) return OSDCMD_SHOWHELP;
    if (level < 0) return OSDCMD_SHOWHELP;

    if (volume >= 6)
    {
        OSD_Printf("changelevel: invalid volume number (range 1-%d)\n",6);
        return OSDCMD_OK;
    }

    if (level >= gEpisodeInfo[volume].nLevels)
    {
        OSD_Printf("changelevel: invalid level number\n");
        return OSDCMD_SHOWHELP;
    }

    if (gDemo.at1)
        gDemo.StopPlayback();

    if (numplayers > 1)
    {
        gPacketStartGame.episodeId = volume;
        gPacketStartGame.levelId = level;
        netBroadcastNewGame();
        gStartNewGame = 1;
        gGameMenuMgr.Deactivate();
        return OSDCMD_OK;
    }
    levelSetupOptions(volume, level);
    StartLevel(&gGameOptions);
    viewResizeView(gViewSize);
    gGameMenuMgr.Deactivate();

    return OSDCMD_OK;
}

static int osdcmd_map(osdcmdptr_t parm)
{
    char filename[BMAX_PATH];

    const int32_t wildcardp = parm->numparms==1 &&
        (Bstrchr(parm->parms[0], '*') != NULL);

    if (parm->numparms != 1 || wildcardp)
    {
        CACHE1D_FIND_REC *r;
        fnlist_t fnlist = FNLIST_INITIALIZER;
        int32_t maxwidth = 0;

        if (wildcardp)
            maybe_append_ext(filename, sizeof(filename), parm->parms[0], ".map");
        else
            Bstrcpy(filename, "*.MAP");

        fnlist_getnames(&fnlist, "/", filename, -1, 0);
        gSysRes.FNAddFiles(&fnlist, filename);

        for (r=fnlist.findfiles; r; r=r->next)
            maxwidth = max<int>(maxwidth, Bstrlen(r->name));

        if (maxwidth > 0)
        {
            int32_t x = 0;
            maxwidth += 3;
            OSD_Printf(OSDTEXT_RED "Map listing:\n");
            for (r=fnlist.findfiles; r; r=r->next)
            {
                OSD_Printf("%-*s",maxwidth,r->name);
                x += maxwidth;
                if (x > OSD_GetCols() - maxwidth)
                {
                    x = 0;
                    OSD_Printf("\n");
                }
            }
            if (x) OSD_Printf("\n");
            OSD_Printf(OSDTEXT_RED "Found %d maps\n", fnlist.numfiles);
        }

        fnlist_clearnames(&fnlist);

        return OSDCMD_SHOWHELP;
    }

    strcpy(filename, parm->parms[0]);
    ChangeExtension(filename, "");

    if (!gSysRes.Lookup(filename, "MAP"))
    {
        OSD_Printf(OSD_ERROR "map: file \"%s\" not found.\n", filename);
        return OSDCMD_OK;
    }

    if (gDemo.at1)
        gDemo.StopPlayback();

    levelAddUserMap(filename);

    if (numplayers > 1)
    {
        gPacketStartGame.episodeId = gGameOptions.nEpisode;
        gPacketStartGame.levelId = gGameOptions.nLevel;
        netBroadcastNewGame();
        gStartNewGame = 1;
        gGameMenuMgr.Deactivate();
        return OSDCMD_OK;
    }
    levelSetupOptions(gGameOptions.nEpisode, gGameOptions.nLevel);
    StartLevel(&gGameOptions);
    viewResizeView(gViewSize);
    gGameMenuMgr.Deactivate();

    return OSDCMD_OK;
}

static int osdcmd_demo(osdcmdptr_t parm)
{
    if (numplayers > 1)
    {
        OSD_Printf("Command not allowed in multiplayer\n");
        return OSDCMD_OK;
    }

    //if (g_player[myconnectindex].ps->gm & MODE_GAME)
    //{
    //    OSD_Printf("demo: Must not be in a game.\n");
    //    return OSDCMD_OK;
    //}

    if (parm->numparms != 1/* && parm->numparms != 2*/)
        return OSDCMD_SHOWHELP;

    gDemo.SetupPlayback(parm->parms[0]);
    gGameStarted = 0;
    gDemo.Playback();

    return OSDCMD_OK;
}

int osdcmd_restartvid(osdcmdptr_t UNUSED(parm))
{
    UNREFERENCED_CONST_PARAMETER(parm);
    videoResetMode();
    if (videoSetGameMode(gSetup.fullscreen,gSetup.xdim,gSetup.ydim,gSetup.bpp,0))
        ThrowError("restartvid: Reset failed...\n");
    onvideomodechange(gSetup.bpp>8);
    viewResizeView(gViewSize);

    return OSDCMD_OK;
}

static int osdcmd_music(osdcmdptr_t parm)
{
    char buffer[128];
    if (parm->numparms == 1)
    {
        int32_t sel = levelGetMusicIdx(parm->parms[0]);

        if (sel == -1)
            return OSDCMD_SHOWHELP;

        if (sel == -2)
        {
            OSD_Printf("%s is not a valid episode/level number pair\n", parm->parms[0]);
            return OSDCMD_OK;
        }

        int nEpisode = sel/kMaxLevels;
        int nLevel = sel%kMaxLevels;

        if (!levelTryPlayMusic(nEpisode, nLevel))
        {
            if (CDAudioToggle)
                snprintf(buffer, sizeof(buffer), "Playing %i track", gEpisodeInfo[nEpisode].at28[nLevel].ate0);
            else
                snprintf(buffer, sizeof(buffer), "Playing %s", gEpisodeInfo[nEpisode].at28[nLevel].atd0);
            viewSetMessage(buffer);
        }
        else
        {
            OSD_Printf("No music defined for %s\n", parm->parms[0]);
        }

        return OSDCMD_OK;
    }

    return OSDCMD_SHOWHELP;
}

static int osdcmd_vidmode(osdcmdptr_t parm)
{
    int32_t newbpp = gSetup.bpp, newwidth = gSetup.xdim,
            newheight = gSetup.ydim, newfs = gSetup.fullscreen;
    int32_t tmp;

    if (parm->numparms < 1 || parm->numparms > 4) return OSDCMD_SHOWHELP;

    switch (parm->numparms)
    {
    case 1: // bpp switch
        tmp = Batol(parm->parms[0]);
        if (!(tmp==8 || tmp==16 || tmp==32))
            return OSDCMD_SHOWHELP;
        newbpp = tmp;
        break;
    case 2: // res switch
        newwidth = Batol(parm->parms[0]);
        newheight = Batol(parm->parms[1]);
        break;
    case 3: // res & bpp switch
    case 4:
        newwidth = Batol(parm->parms[0]);
        newheight = Batol(parm->parms[1]);
        tmp = Batol(parm->parms[2]);
        if (!(tmp==8 || tmp==16 || tmp==32))
            return OSDCMD_SHOWHELP;
        newbpp = tmp;
        if (parm->numparms == 4)
            newfs = (Batol(parm->parms[3]) != 0);
        break;
    }

    if (videoSetGameMode(newfs,newwidth,newheight,newbpp,upscalefactor))
    {
        initprintf("vidmode: Mode change failed!\n");
        if (videoSetGameMode(gSetup.fullscreen, gSetup.xdim, gSetup.ydim, gSetup.bpp, upscalefactor))
            ThrowError("vidmode: Reset failed!\n");
    }
    gSetup.bpp = newbpp;
    gSetup.xdim = newwidth;
    gSetup.ydim = newheight;
    gSetup.fullscreen = newfs;
    onvideomodechange(gSetup.bpp>8);
    viewResizeView(gViewSize);
    return OSDCMD_OK;
}

static int osdcmd_crosshaircolor(osdcmdptr_t parm)
{
    if (parm->numparms != 3)
    {
        OSD_Printf("crosshaircolor: r:%d g:%d b:%d\n",CrosshairColors.r,CrosshairColors.g,CrosshairColors.b);
        return OSDCMD_SHOWHELP;
    }

    uint8_t const r = Batol(parm->parms[0]);
    uint8_t const g = Batol(parm->parms[1]);
    uint8_t const b = Batol(parm->parms[2]);

    g_isAlterDefaultCrosshair = true;
    viewSetCrosshairColor(r,g,b);

    if (!OSD_ParsingScript())
        OSD_Printf("%s\n", parm->raw);

    return OSDCMD_OK;
}

static int osdcmd_resetcrosshair(osdcmdptr_t UNUSED(parm))
{
    UNREFERENCED_CONST_PARAMETER(parm);
    g_isAlterDefaultCrosshair = false;
    viewResetCrosshairToDefault();

    return OSDCMD_OK;
}

static int osdcmd_give(osdcmdptr_t parm)
{
    if (numplayers != 1 || !gGameStarted || gMe->pXSprite->health == 0)
    {
        OSD_Printf("give: Cannot give while dead or not in a single-player game.\n");
        return OSDCMD_OK;
    }

    if (parm->numparms != 1) return OSDCMD_SHOWHELP;

    if (!Bstrcasecmp(parm->parms[0], "all"))
    {
        SetWeapons(true);
        SetAmmo(true);
        SetToys(true);
        SetArmor(true);
        SetKeys(true);
        gCheatMgr.m_bPlayerCheated = true;
        return OSDCMD_OK;
    }
    else if (!Bstrcasecmp(parm->parms[0], "health"))
    {
        actHealDude(gMe->pXSprite, 200, 200);
        gCheatMgr.m_bPlayerCheated = true;
        return OSDCMD_OK;
    }
    else if (!Bstrcasecmp(parm->parms[0], "weapons"))
    {
        SetWeapons(true);
        gCheatMgr.m_bPlayerCheated = true;
        return OSDCMD_OK;
    }
    else if (!Bstrcasecmp(parm->parms[0], "ammo"))
    {
        SetAmmo(true);
        gCheatMgr.m_bPlayerCheated = true;
        return OSDCMD_OK;
    }
    else if (!Bstrcasecmp(parm->parms[0], "armor"))
    {
        SetArmor(true);
        gCheatMgr.m_bPlayerCheated = true;
        return OSDCMD_OK;
    }
    else if (!Bstrcasecmp(parm->parms[0], "keys"))
    {
        SetKeys(true);
        gCheatMgr.m_bPlayerCheated = true;
        return OSDCMD_OK;
    }
    else if (!Bstrcasecmp(parm->parms[0], "inventory"))
    {
        SetToys(true);
        gCheatMgr.m_bPlayerCheated = true;
        return OSDCMD_OK;
    }
    return OSDCMD_SHOWHELP;
}

static int osdcmd_god(osdcmdptr_t UNUSED(parm))
{
    UNREFERENCED_CONST_PARAMETER(parm);
    if (numplayers == 1 && gGameStarted)
    {
        SetGodMode(!gMe->at31a);
        gCheatMgr.m_bPlayerCheated = true;
    }
    else
        OSD_Printf("god: Not in a single-player game.\n");

    return OSDCMD_OK;
}

static int osdcmd_noclip(osdcmdptr_t UNUSED(parm))
{
    UNREFERENCED_CONST_PARAMETER(parm);

    if (numplayers == 1 && gGameStarted)
    {
        SetClipMode(!gNoClip);
        gCheatMgr.m_bPlayerCheated = true;
    }
    else
    {
        OSD_Printf("noclip: Not in a single-player game.\n");
    }

    return OSDCMD_OK;
}

static int osdcmd_restartsound(osdcmdptr_t UNUSED(parm))
{
    UNREFERENCED_CONST_PARAMETER(parm);
    sfxTerm();
    sndTerm();

    sndInit();
    sfxInit();

    if (MusicToggle && (gGameStarted || gDemo.at1))
        sndPlaySong(gGameOptions.zLevelSong, true);

    return OSDCMD_OK;
}

void onvideomodechange(int32_t newmode)
{
    UNREFERENCED_PARAMETER(newmode);
#if 0
    uint8_t palid;

    // XXX?
    if (!newmode || g_player[screenpeek].ps->palette < BASEPALCOUNT)
        palid = g_player[screenpeek].ps->palette;
    else
        palid = BASEPAL;

#ifdef POLYMER
    if (videoGetRenderMode() == REND_POLYMER)
    {
        int32_t i = 0;

        while (i < MAXSPRITES)
        {
            if (actor[i].lightptr)
            {
                polymer_deletelight(actor[i].lightId);
                actor[i].lightptr = NULL;
                actor[i].lightId = -1;
            }
            i++;
        }
    }
#endif

    videoSetPalette(ud.brightness>>2, palid, 0);
    g_restorePalette = -1;
#endif
    if (newmode)
        scrResetPalette();
    UpdateDacs(gLastPal, false);
}

static int osdcmd_button(osdcmdptr_t parm)
{
    static char const s_gamefunc_[] = "gamefunc_";
    int constexpr strlen_gamefunc_  = ARRAY_SIZE(s_gamefunc_) - 1;

    char const *p = parm->name + strlen_gamefunc_;

//    if (g_player[myconnectindex].ps->gm == MODE_GAME) // only trigger these if in game
    if (gInputMode == INPUT_MODE_0)
        CONTROL_ButtonFlags[CONFIG_FunctionNameToNum(p)] = 1; // FIXME

    return OSDCMD_OK;
}

const char *const ConsoleButtons[] =
{
    "mouse1", "mouse2", "mouse3", "mouse4", "mwheelup",
    "mwheeldn", "mouse5", "mouse6", "mouse7", "mouse8"
};

static int osdcmd_bind(osdcmdptr_t parm)
{
    char buffer[256];
    if (parm->numparms==1 && !Bstrcasecmp(parm->parms[0],"showkeys"))
    {
        for (int i=0; sctokeylut[i].key; i++)
            OSD_Printf("%s\n",sctokeylut[i].key);
        for (auto ConsoleButton : ConsoleButtons)
            OSD_Printf("%s\n",ConsoleButton);
        return OSDCMD_OK;
    }

    if (parm->numparms==0)
    {
        int j=0;

        OSD_Printf("Current key bindings:\n");

        for (int i=0; i<MAXBOUNDKEYS+MAXMOUSEBUTTONS; i++)
            if (CONTROL_KeyIsBound(i))
            {
                j++;
                OSD_Printf("%-9s %s\"%s\"\n", CONTROL_KeyBinds[i].key, CONTROL_KeyBinds[i].repeat?"":"norepeat ",
                           CONTROL_KeyBinds[i].cmdstr);
            }

        if (j == 0)
            OSD_Printf("No binds found.\n");

        return OSDCMD_OK;
    }

    int i, j, repeat;

    for (i=0; i < ARRAY_SSIZE(sctokeylut); i++)
    {
        if (!Bstrcasecmp(parm->parms[0], sctokeylut[i].key))
            break;
    }

    // didn't find the key
    if (i == ARRAY_SSIZE(sctokeylut))
    {
        for (i=0; i<MAXMOUSEBUTTONS; i++)
            if (!Bstrcasecmp(parm->parms[0],ConsoleButtons[i]))
                break;

        if (i >= MAXMOUSEBUTTONS)
            return OSDCMD_SHOWHELP;

        if (parm->numparms < 2)
        {
            if (CONTROL_KeyBinds[MAXBOUNDKEYS + i].cmdstr && CONTROL_KeyBinds[MAXBOUNDKEYS + i ].key)
                OSD_Printf("%-9s %s\"%s\"\n", ConsoleButtons[i], CONTROL_KeyBinds[MAXBOUNDKEYS + i].repeat?"":"norepeat ",
                CONTROL_KeyBinds[MAXBOUNDKEYS + i].cmdstr);
            else OSD_Printf("%s is unbound\n", ConsoleButtons[i]);
            return OSDCMD_OK;
        }

        j = 1;

        repeat = 1;
        if (!Bstrcasecmp(parm->parms[j],"norepeat"))
        {
            repeat = 0;
            j++;
        }

        Bstrcpy(buffer,parm->parms[j++]);
        for (; j<parm->numparms; j++)
        {
            Bstrcat(buffer," ");
            Bstrcat(buffer,parm->parms[j++]);
        }

        CONTROL_BindMouse(i, buffer, repeat, ConsoleButtons[i]);

        if (!OSD_ParsingScript())
            OSD_Printf("%s\n",parm->raw);
        return OSDCMD_OK;
    }

    if (parm->numparms < 2)
    {
        if (CONTROL_KeyIsBound(sctokeylut[i].sc))
            OSD_Printf("%-9s %s\"%s\"\n", sctokeylut[i].key, CONTROL_KeyBinds[sctokeylut[i].sc].repeat?"":"norepeat ",
                       CONTROL_KeyBinds[sctokeylut[i].sc].cmdstr);
        else OSD_Printf("%s is unbound\n", sctokeylut[i].key);

        return OSDCMD_OK;
    }

    j = 1;

    repeat = 1;
    if (!Bstrcasecmp(parm->parms[j],"norepeat"))
    {
        repeat = 0;
        j++;
    }

    Bstrcpy(buffer,parm->parms[j++]);
    for (; j<parm->numparms; j++)
    {
        Bstrcat(buffer," ");
        Bstrcat(buffer,parm->parms[j++]);
    }

    CONTROL_BindKey(sctokeylut[i].sc, buffer, repeat, sctokeylut[i].key);

    char *cp = buffer;

    // Populate the keyboard config menu based on the bind.
    // Take care of processing one-to-many bindings properly, too.
    static char const s_gamefunc_[] = "gamefunc_";
    int constexpr strlen_gamefunc_  = ARRAY_SIZE(s_gamefunc_) - 1;

    while ((cp = Bstrstr(cp, s_gamefunc_)))
    {
        cp += strlen_gamefunc_;

        char *semi = Bstrchr(cp, ';');

        if (semi)
            *semi = 0;

        j = CONFIG_FunctionNameToNum(cp);

        if (semi)
            cp = semi+1;

        if (j != -1)
        {
            KeyboardKeys[j][1] = KeyboardKeys[j][0];
            KeyboardKeys[j][0] = sctokeylut[i].sc;
//            CONTROL_MapKey(j, sctokeylut[i].sc, ud.config.KeyboardKeys[j][0]);

            if (j == gamefunc_Show_Console)
                OSD_CaptureKey(sctokeylut[i].sc);
        }
    }

    if (!OSD_ParsingScript())
        OSD_Printf("%s\n",parm->raw);

    return OSDCMD_OK;
}

static int osdcmd_unbindall(osdcmdptr_t UNUSED(parm))
{
    UNREFERENCED_CONST_PARAMETER(parm);

    for (int i = 0; i < MAXBOUNDKEYS; ++i)
        CONTROL_FreeKeyBind(i);

    for (int i = 0; i < MAXMOUSEBUTTONS; ++i)
        CONTROL_FreeMouseBind(i);

    for (auto &KeyboardKey : KeyboardKeys)
        KeyboardKey[0] = KeyboardKey[1] = 0xff;

    if (!OSD_ParsingScript())
        OSD_Printf("unbound all controls\n");

    return OSDCMD_OK;
}

static int osdcmd_unbind(osdcmdptr_t parm)
{
    if (parm->numparms != 1)
        return OSDCMD_SHOWHELP;

    for (auto ConsoleKey : sctokeylut)
    {
        if (ConsoleKey.key && !Bstrcasecmp(parm->parms[0], ConsoleKey.key))
        {
            CONTROL_FreeKeyBind(ConsoleKey.sc);
            OSD_Printf("unbound key %s\n", ConsoleKey.key);
            return OSDCMD_OK;
        }
    }

    for (int i = 0; i < MAXMOUSEBUTTONS; i++)
    {
        if (!Bstrcasecmp(parm->parms[0], ConsoleButtons[i]))
        {
            CONTROL_FreeMouseBind(i);
            OSD_Printf("unbound %s\n", ConsoleButtons[i]);
            return OSDCMD_OK;
        }
    }

    return OSDCMD_SHOWHELP;
}

static int osdcmd_screenshot(osdcmdptr_t parm)
{
    static const char *fn = "blud0000.png";

    if (parm->numparms == 1 && !Bstrcasecmp(parm->parms[0], "tga"))
        videoCaptureScreenTGA(fn, 0);
    else videoCaptureScreen(fn, 0);

    return OSDCMD_OK;
}

#if 0
static int osdcmd_savestate(osdcmdptr_t UNUSED(parm))
{
    UNREFERENCED_PARAMETER(parm);
    G_SaveMapState();
    return OSDCMD_OK;
}

static int osdcmd_restorestate(osdcmdptr_t UNUSED(parm))
{
    UNREFERENCED_PARAMETER(parm);
    G_RestoreMapState();
    return OSDCMD_OK;
}
#endif

#if 0
#ifdef DEBUGGINGAIDS
static int osdcmd_inittimer(osdcmdptr_t parm)
{
    if (parm->numparms != 1)
    {
        OSD_Printf("%dHz timer\n",g_timerTicsPerSecond);
        return OSDCMD_SHOWHELP;
    }

    G_InitTimer(Batol(parm->parms[0]));

    OSD_Printf("%s\n",parm->raw);
    return OSDCMD_OK;
}
#endif
#endif

static int osdcmd_cvar_set_game(osdcmdptr_t parm)
{
    int const r = osdcmd_cvar_set(parm);

    if (r != OSDCMD_OK) return r;

    if (!Bstrcasecmp(parm->name, "r_upscalefactor"))
    {
        if (in3dmode())
        {
            videoSetGameMode(fullscreen, xres, yres, bpp, gUpscaleFactor);
        }
    }
    else if (!Bstrcasecmp(parm->name, "r_size"))
    {
        //ud.statusbarmode = (ud.screen_size < 8);
        viewResizeView(gViewSize);
    }
    else if (!Bstrcasecmp(parm->name, "r_maxfps") || !Bstrcasecmp(parm->name, "r_maxfpsoffset"))
    {
        if (r_maxfps != 0) r_maxfps = clamp(r_maxfps, 30, 1000);
        g_frameDelay = calcFrameDelay(r_maxfps + r_maxfpsoffset);
    }
    else if (!Bstrcasecmp(parm->name, "r_ambientlight"))
    {
        if (r_ambientlight == 0)
            r_ambientlightrecip = 256.f;
        else r_ambientlightrecip = 1.f/r_ambientlight;
    }
    else if (!Bstrcasecmp(parm->name, "in_mouse"))
    {
        CONTROL_MouseEnabled = (gSetup.usemouse && CONTROL_MousePresent);
    }
    else if (!Bstrcasecmp(parm->name, "in_joystick"))
    {
        CONTROL_JoystickEnabled = (gSetup.usejoystick && CONTROL_JoyPresent);
    }
    else if (!Bstrcasecmp(parm->name, "vid_gamma"))
    {
        gBrightness = GAMMA_CALC;
        gBrightness <<= 2;
        videoSetPalette(gBrightness>>2,gLastPal,0);
    }
    else if (!Bstrcasecmp(parm->name, "vid_brightness") || !Bstrcasecmp(parm->name, "vid_contrast"))
    {
        videoSetPalette(gBrightness>>2,gLastPal,0);
    }
#if 0
    else if (!Bstrcasecmp(parm->name, "hud_scale")
             || !Bstrcasecmp(parm->name, "hud_statusbarmode")
             || !Bstrcasecmp(parm->name, "r_rotatespritenowidescreen"))
    {
        G_UpdateScreenArea();
    }
    else if (!Bstrcasecmp(parm->name, "skill"))
    {
        if (numplayers > 1)
            return r;

        ud.player_skill = ud.m_player_skill;
    }
    else if (!Bstrcasecmp(parm->name, "color"))
    {
        ud.color = G_CheckPlayerColor(ud.color);
        g_player[0].ps->palookup = g_player[0].pcolor = ud.color;
    }
    else if (!Bstrcasecmp(parm->name, "osdscale"))
    {
        osdrscale = 1.f/osdscale;

        if (xdim && ydim)
            OSD_ResizeDisplay(xdim, ydim);
    }
    else if (!Bstrcasecmp(parm->name, "wchoice"))
    {
        if (parm->numparms == 1)
        {
            if (g_forceWeaponChoice) // rewrite ud.wchoice because osdcmd_cvar_set already changed it
            {
                int j = 0;

                while (j < 10)
                {
                    ud.wchoice[j] = g_player[myconnectindex].wchoice[j] + '0';
                    j++;
                }

                ud.wchoice[j] = 0;
            }
            else
            {
                char const *c = parm->parms[0];

                if (*c)
                {
                    int j = 0;

                    while (*c && j < 10)
                    {
                        g_player[myconnectindex].wchoice[j] = *c - '0';
                        c++;
                        j++;
                    }

                    while (j < 10)
                    {
                        if (j == 9)
                            g_player[myconnectindex].wchoice[9] = 1;
                        else
                            g_player[myconnectindex].wchoice[j] = 2;

                        j++;
                    }
                }
            }

            g_forceWeaponChoice = 0;
        }

        /*    Net_SendClientInfo();*/
    }
#endif

    return r;
}

static int osdcmd_cvar_set_multi(osdcmdptr_t parm)
{
    int const r = osdcmd_cvar_set_game(parm);

    if (r != OSDCMD_OK) return r;

    //G_UpdatePlayerFromMenu();

    return r;
}

int32_t registerosdcommands(void)
{
    char buffer[256];
    static osdcvardata_t cvars_game[] =
    {
        { "crosshair", "enable/disable crosshair", (void *)&gAimReticle, CVAR_BOOL, 0, 1 },

        { "cl_autoaim", "enable/disable weapon autoaim", (void *)&gAutoAim, CVAR_INT|CVAR_MULTI, 0, 2 },
//        { "cl_automsg", "enable/disable automatically sending messages to all players", (void *)&ud.automsg, CVAR_BOOL, 0, 1 },
        { "cl_autorun", "enable/disable autorun", (void *)&gAutoRun, CVAR_BOOL, 0, 1 },
//
//        { "cl_autosave", "enable/disable autosaves", (void *) &ud.autosave, CVAR_BOOL, 0, 1 },
//        { "cl_autosavedeletion", "enable/disable automatic deletion of autosaves", (void *) &ud.autosavedeletion, CVAR_BOOL, 0, 1 },
//        { "cl_maxautosaves", "number of autosaves to keep before deleting the oldest", (void *) &ud.maxautosaves, CVAR_INT, 1, 100 },
//
//        { "cl_autovote", "enable/disable automatic voting", (void *)&ud.autovote, CVAR_INT, 0, 2 },
//
//        { "cl_cheatmask", "configure what cheats show in the cheats menu", (void *)&cl_cheatmask, CVAR_UINT, 0, ~0 },
//
//        { "cl_obituaries", "enable/disable multiplayer death messages", (void *)&ud.obituaries, CVAR_BOOL, 0, 1 },
//        { "cl_democams", "enable/disable demo playback cameras", (void *)&ud.democams, CVAR_BOOL, 0, 1 },
//
//        { "cl_idplayers", "enable/disable name display when aiming at opponents", (void *)&ud.idplayers, CVAR_BOOL, 0, 1 },
//

        { "cl_interpolate", "enable/disable view interpolation", (void *)&gViewInterpolate, CVAR_BOOL, 0, 1 },
        { "cl_viewhbob", "enable/disable view horizontal bobbing", (void *)&gViewHBobbing, CVAR_BOOL, 0, 1 },
        { "cl_viewvbob", "enable/disable view vertical bobbing", (void *)&gViewVBobbing, CVAR_BOOL, 0, 1 },
        { "cl_slopetilting", "enable/disable slope tilting", (void *)&gSlopeTilting, CVAR_BOOL, 0, 1 },
        { "cl_showweapon", "enable/disable show weapons", (void *)&gShowWeapon, CVAR_BOOL, 0, 1 },

        { "cl_runmode", "enable/disable modernized run key operation", (void *)&gRunKeyMode, CVAR_BOOL, 0, 1 },
//
//        { "cl_showcoords", "show your position in the game world", (void *)&ud.coords, CVAR_INT, 0,
//#ifdef USE_OPENGL
//          2
//#else
//          1
//#endif
//        },
//
//        { "cl_viewbob", "enable/disable player head bobbing", (void *)&ud.viewbob, CVAR_BOOL, 0, 1 },
//
//        { "cl_weaponsway", "enable/disable player weapon swaying", (void *)&ud.weaponsway, CVAR_BOOL, 0, 1 },
        { "cl_weaponswitch", "enable/disable auto weapon switching", (void *)&gWeaponSwitch, CVAR_INT|CVAR_MULTI, 0, 3 },
//
//        { "color", "changes player palette", (void *)&ud.color, CVAR_INT|CVAR_MULTI, 0, MAXPALOOKUPS-1 },
//
//        { "crosshairscale","changes the size of the crosshair", (void *)&ud.crosshairscale, CVAR_INT, 10, 100 },
//
//        { "demorec_diffs","enable/disable diff recording in demos",(void *)&demorec_diffs_cvar, CVAR_BOOL, 0, 1 },
//        { "demorec_force","enable/disable forced demo recording",(void *)&demorec_force_cvar, CVAR_BOOL|CVAR_NOSAVE, 0, 1 },
//        {
//            "demorec_difftics","sets game tic interval after which a diff is recorded",
//            (void *)&demorec_difftics_cvar, CVAR_INT, 2, 60*REALGAMETICSPERSEC
//        },
//        { "demorec_diffcompress","Compression method for diffs. (0: none, 1: KSLZW)",(void *)&demorec_diffcompress_cvar, CVAR_INT, 0, 1 },
//        { "demorec_synccompress","Compression method for input. (0: none, 1: KSLZW)",(void *)&demorec_synccompress_cvar, CVAR_INT, 0, 1 },
//        { "demorec_seeds","enable/disable recording of random seed for later sync checking",(void *)&demorec_seeds_cvar, CVAR_BOOL, 0, 1 },
//        { "demoplay_diffs","enable/disable application of diffs in demo playback",(void *)&demoplay_diffs, CVAR_BOOL, 0, 1 },
//        { "demoplay_showsync","enable/disable display of sync status",(void *)&demoplay_showsync, CVAR_BOOL, 0, 1 },
//
//        { "hud_althud", "enable/disable alternate mini-hud", (void *)&ud.althud, CVAR_BOOL, 0, 1 },
//        { "hud_custom", "change the custom hud", (void *)&ud.statusbarcustom, CVAR_INT, 0, ud.statusbarrange },
//        { "hud_position", "aligns the status bar to the bottom/top", (void *)&ud.hudontop, CVAR_BOOL, 0, 1 },
//        { "hud_bgstretch", "enable/disable background image stretching in wide resolutions", (void *)&ud.bgstretch, CVAR_BOOL, 0, 1 },
        { "hud_messages", "enable/disable showing messages", (void *)&gMessageState, CVAR_BOOL, 0, 1 },
//        { "hud_messagetime", "length of time to display multiplayer chat messages", (void *)&ud.msgdisptime, CVAR_INT, 0, 3600 },
//        { "hud_numbertile", "first tile in alt hud number set", (void *)&althud_numbertile, CVAR_INT, 0, MAXUSERTILES-10 },
//        { "hud_numberpal", "pal for alt hud numbers", (void *)&althud_numberpal, CVAR_INT, 0, MAXPALOOKUPS-1 },
//        { "hud_shadows", "enable/disable althud shadows", (void *)&althud_shadows, CVAR_BOOL, 0, 1 },
//        { "hud_flashing", "enable/disable althud flashing", (void *)&althud_flashing, CVAR_BOOL, 0, 1 },
//        { "hud_glowingquotes", "enable/disable \"glowing\" quote text", (void *)&hud_glowingquotes, CVAR_BOOL, 0, 1 },
//        { "hud_scale","changes the hud scale", (void *)&ud.statusbarscale, CVAR_INT|CVAR_FUNCPTR, 36, 100 },
//        { "hud_showmapname", "enable/disable map name display on load", (void *)&hud_showmapname, CVAR_BOOL, 0, 1 },
        { "hud_stats", "enable/disable level statistics display", (void *)&gLevelStats, CVAR_BOOL, 0, 1 },
        { "hud_powerupduration", "enable/disable displaying the remaining seconds for power-ups", (void *)&gPowerupDuration, CVAR_BOOL, 0, 1 },
        { "hud_showmaptitle", "enable/disable displaying the map title at the beginning of the maps", (void*)& gShowMapTitle, CVAR_BOOL, 0, 1 },
//        { "hud_textscale", "sets multiplayer chat message size", (void *)&ud.textscale, CVAR_INT, 100, 400 },
//        { "hud_weaponscale","changes the weapon scale", (void *)&ud.weaponscale, CVAR_INT, 10, 100 },
//        { "hud_statusbarmode", "change overlay mode of status bar", (void *)&ud.statusbarmode, CVAR_BOOL|CVAR_FUNCPTR, 0, 1 },
//
//#ifdef EDUKE32_TOUCH_DEVICES
//        { "hud_hidestick", "hide the touch input stick", (void *)&droidinput.hideStick, CVAR_BOOL, 0, 1 },
//#endif
//
        { "horizcenter", "enable/disable centered horizon line", (void *)&gCenterHoriz, CVAR_BOOL, 0, 1 },
        { "deliriumblur", "enable/disable delirium blur effect(polymost)", (void *)&gDeliriumBlur, CVAR_BOOL, 0, 1 },
        { "fov", "change the field of view", (void *)&gFov, CVAR_INT|CVAR_FUNCPTR, 75, 120 },
        { "in_joystick","enables input from the joystick if it is present",(void *)&gSetup.usejoystick, CVAR_BOOL|CVAR_FUNCPTR, 0, 1 },
        { "in_mouse","enables input from the mouse if it is present",(void *)&gSetup.usemouse, CVAR_BOOL|CVAR_FUNCPTR, 0, 1 },

        { "in_aimmode", "0:toggle, 1:hold to aim", (void *)&gMouseAiming, CVAR_BOOL, 0, 1 },
        {
            "in_mousebias", "emulates the original mouse code's weighting of input towards whichever axis is moving the most at any given time",
            (void *)&MouseBias, CVAR_INT, 0, 32
        },
        { "in_mousedeadzone", "amount of mouse movement to filter out", (void *)&MouseDeadZone, CVAR_INT, 0, 512 },
        { "in_mouseflip", "invert vertical mouse movement", (void *)&gMouseAimingFlipped, CVAR_BOOL, 0, 1 },
        { "in_mousemode", "toggles vertical mouse view", (void *)&gMouseAim, CVAR_BOOL, 0, 1 },
        { "in_mousesmoothing", "enable/disable mouse input smoothing", (void *)&SmoothInput, CVAR_BOOL, 0, 1 },
//
        { "mus_enabled", "enables/disables music", (void *)&MusicToggle, CVAR_BOOL, 0, 1 },
        { "mus_restartonload", "restart the music when loading a saved game with the same map or not", (void *)&MusicRestartsOnLoadToggle, CVAR_BOOL, 0, 1 },
        { "mus_volume", "controls music volume", (void *)&MusicVolume, CVAR_INT, 0, 255 },
        { "mus_device", "music device", (void *)&MusicDevice, CVAR_INT, 0, 1 },
        { "mus_redbook", "enables/disables redbook audio", (void *)&CDAudioToggle, CVAR_BOOL, 0, 1 },
//
//        { "osdhightile", "enable/disable hires art replacements for console text", (void *)&osdhightile, CVAR_BOOL, 0, 1 },
//        { "osdscale", "adjust console text size", (void *)&osdscale, CVAR_FLOAT|CVAR_FUNCPTR, 1, 4 },
//
//        { "r_camrefreshdelay", "minimum delay between security camera sprite updates, 120 = 1 second", (void *)&ud.camera_time, CVAR_INT, 1, 240 },
//        { "r_drawweapon", "enable/disable weapon drawing", (void *)&ud.drawweapon, CVAR_INT, 0, 2 },
        { "r_showfps", "show the frame rate counter", (void *)&gShowFps, CVAR_INT, 0, 3 },
        { "r_showfpsperiod", "time in seconds before averaging min and max stats for r_showfps 2+", (void *)&gFramePeriod, CVAR_INT, 0, 5 },
//        { "r_shadows", "enable/disable sprite and model shadows", (void *)&ud.shadows, CVAR_BOOL, 0, 1 },
        { "r_size", "change size of viewable area", (void *)&gViewSize, CVAR_INT|CVAR_FUNCPTR, 0, 7 },
//        { "r_rotatespritenowidescreen", "pass bit 1024 to all CON rotatesprite calls", (void *)&g_rotatespriteNoWidescreen, CVAR_BOOL|CVAR_FUNCPTR, 0, 1 },
        { "r_upscalefactor", "increase performance by rendering at upscalefactor less than the screen resolution and upscale to the full resolution in the software renderer", (void *)&gUpscaleFactor, CVAR_INT|CVAR_FUNCPTR, 1, 16 },
        { "r_precache", "enable/disable the pre-level caching routine", (void *)&useprecache, CVAR_BOOL, 0, 1 },
//
        { "r_ambientlight", "sets the global map light level",(void *)&r_ambientlight, CVAR_FLOAT|CVAR_FUNCPTR, 0, 10 },
        { "r_maxfps", "limit the frame rate",(void *)&r_maxfps, CVAR_INT|CVAR_FUNCPTR, 0, 1000 },
        { "r_maxfpsoffset", "menu-controlled offset for r_maxfps",(void *)&r_maxfpsoffset, CVAR_INT|CVAR_FUNCPTR, -10, 10 },

        { "sensitivity","changes the mouse sensitivity", (void *)&CONTROL_MouseSensitivity, CVAR_FLOAT|CVAR_FUNCPTR, 0, 25 },
//
//        { "skill","changes the game skill setting", (void *)&ud.m_player_skill, CVAR_INT|CVAR_FUNCPTR|CVAR_NOSAVE/*|CVAR_NOMULTI*/, 0, 5 },
//
//        { "snd_ambience", "enables/disables ambient sounds", (void *)&ud.config.AmbienceToggle, CVAR_BOOL, 0, 1 },
        { "snd_enabled", "enables/disables sound effects", (void *)&SoundToggle, CVAR_BOOL, 0, 1 },
        { "snd_fxvolume", "controls volume for sound effects", (void *)&FXVolume, CVAR_INT, 0, 255 },
        { "snd_mixrate", "sound mixing rate", (void *)&MixRate, CVAR_INT, 0, 48000 },
        { "snd_numchannels", "the number of sound channels", (void *)&NumChannels, CVAR_INT, 0, 2 },
        { "snd_numvoices", "the number of concurrent sounds", (void *)&NumVoices, CVAR_INT, 1, 128 },
        { "snd_reversestereo", "reverses the stereo channels", (void *)&ReverseStereo, CVAR_BOOL, 0, 1 },
        { "snd_doppler", "enable/disable 3d sound", (void *)&gDoppler, CVAR_BOOL, 0, 1 },
//        { "snd_speech", "enables/disables player speech", (void *)&ud.config.VoiceToggle, CVAR_INT, 0, 5 },
//
//        { "team","change team in multiplayer", (void *)&ud.team, CVAR_INT|CVAR_MULTI, 0, 3 },
//
//#ifdef EDUKE32_TOUCH_DEVICES
//        { "touch_sens_move_x","touch input sensitivity for moving forward/back", (void *)&droidinput.forward_sens, CVAR_FLOAT, 1, 9 },
//        { "touch_sens_move_y","touch input sensitivity for strafing", (void *)&droidinput.strafe_sens, CVAR_FLOAT, 1, 9 },
//        { "touch_sens_look_x", "touch input sensitivity for turning left/right", (void *) &droidinput.yaw_sens, CVAR_FLOAT, 1, 9 },
//        { "touch_sens_look_y", "touch input sensitivity for looking up/down", (void *) &droidinput.pitch_sens, CVAR_FLOAT, 1, 9 },
//        { "touch_invert", "invert look up/down touch input", (void *) &droidinput.invertLook, CVAR_INT, 0, 1 },
//#endif
//
        { "vid_gamma","adjusts gamma component of gamma ramp",(void *)&g_videoGamma, CVAR_FLOAT|CVAR_FUNCPTR, 0, 10 },
        { "vid_contrast","adjusts contrast component of gamma ramp",(void *)&g_videoContrast, CVAR_FLOAT|CVAR_FUNCPTR, 0, 10 },
        { "vid_brightness","adjusts brightness component of gamma ramp",(void *)&g_videoBrightness, CVAR_FLOAT|CVAR_FUNCPTR, 0, 10 },
//        { "wchoice","sets weapon autoselection order", (void *)ud.wchoice, CVAR_STRING|CVAR_FUNCPTR, 0, MAX_WEAPONS },
    };
//
//    osdcmd_cheatsinfo_stat.cheatnum = -1;
//
    for (auto & cv : cvars_game)
    {
        switch (cv.flags & (CVAR_FUNCPTR|CVAR_MULTI))
        {
            case CVAR_FUNCPTR:
                OSD_RegisterCvar(&cv, osdcmd_cvar_set_game); break;
            case CVAR_MULTI:
            case CVAR_FUNCPTR|CVAR_MULTI:
                OSD_RegisterCvar(&cv, osdcmd_cvar_set_multi); break;
            default:
                OSD_RegisterCvar(&cv, osdcmd_cvar_set); break;
        }
    }
//
//    if (VOLUMEONE)
//        OSD_RegisterFunction("changelevel","changelevel <level>: warps to the given level", osdcmd_changelevel);
//    else
//    {
    OSD_RegisterFunction("changelevel","changelevel <volume> <level>: warps to the given level", osdcmd_changelevel);
    OSD_RegisterFunction("map","map <mapfile>: loads the given user map", osdcmd_map);
    OSD_RegisterFunction("demo","demo <demofile or demonum>: starts the given demo", osdcmd_demo);
//    }
//
//    OSD_RegisterFunction("addpath","addpath <path>: adds path to game filesystem", osdcmd_addpath);
    OSD_RegisterFunction("bind",R"(bind <key> <string>: associates a keypress with a string of console input. Type "bind showkeys" for a list of keys and "listsymbols" for a list of valid console commands.)", osdcmd_bind);
//    OSD_RegisterFunction("cmenu","cmenu <#>: jumps to menu", osdcmd_cmenu);
    OSD_RegisterFunction("crosshaircolor","crosshaircolor: changes the crosshair color", osdcmd_crosshaircolor);
    OSD_RegisterFunction("crosshairreset", "crosshairreset: restores the original crosshair", osdcmd_resetcrosshair);
//
//#if !defined NETCODE_DISABLE
//    OSD_RegisterFunction("connect","connect: connects to a multiplayer game", osdcmd_connect);
//    OSD_RegisterFunction("disconnect","disconnect: disconnects from the local multiplayer game", osdcmd_disconnect);
//#endif

    for (auto & func : gamefunctions)
    {
        if (func[0] == '\0')
            continue;

//        if (!Bstrcmp(gamefunctions[i],"Show_Console")) continue;

        Bsprintf(buffer, "gamefunc_%s", func);

        char *const t = Bstrtolower(Xstrdup(buffer));

        Bstrcat(buffer, ": game button");

        OSD_RegisterFunction(t, Xstrdup(buffer), osdcmd_button);
    }

    OSD_RegisterFunction("give","give <all|health|weapons|ammo|armor|keys|inventory>: gives requested item", osdcmd_give);
    OSD_RegisterFunction("god","god: toggles god mode", osdcmd_god);
//    OSD_RegisterFunction("activatecheat","activatecheat <id>: activates a cheat code", osdcmd_activatecheat);
//
//    OSD_RegisterFunction("initgroupfile","initgroupfile <path>: adds a grp file into the game filesystem", osdcmd_initgroupfile);
//#ifdef DEBUGGINGAIDS
//    OSD_RegisterFunction("inittimer","debug", osdcmd_inittimer);
//#endif
//#if !defined NETCODE_DISABLE
//    OSD_RegisterFunction("kick","kick <id>: kicks a multiplayer client.  See listplayers.", osdcmd_kick);
//    OSD_RegisterFunction("kickban","kickban <id>: kicks a multiplayer client and prevents them from reconnecting.  See listplayers.", osdcmd_kickban);
//
//    OSD_RegisterFunction("listplayers","listplayers: lists currently connected multiplayer clients", osdcmd_listplayers);
//#endif
    OSD_RegisterFunction("music","music E<ep>L<lev>: change music", osdcmd_music);
//
//#if !defined NETCODE_DISABLE
//    OSD_RegisterFunction("name","name: change your multiplayer nickname", osdcmd_name);
//#endif
//
    OSD_RegisterFunction("noclip","noclip: toggles clipping mode", osdcmd_noclip);
//
//#if !defined NETCODE_DISABLE
//    OSD_RegisterFunction("password","password: sets multiplayer game password", osdcmd_password);
//#endif
//
//    OSD_RegisterFunction("printtimes", "printtimes: prints VM timing statistics", osdcmd_printtimes);
//
//    OSD_RegisterFunction("purgesaves", "purgesaves: deletes obsolete and unreadable save files", osdcmd_purgesaves);
//
//    OSD_RegisterFunction("quicksave","quicksave: performs a quick save", osdcmd_quicksave);
//    OSD_RegisterFunction("quickload","quickload: performs a quick load", osdcmd_quickload);
    OSD_RegisterFunction("quit","quit: exits the game immediately", osdcmd_quit);
    OSD_RegisterFunction("exit","exit: exits the game immediately", osdcmd_quit);
//
//    OSD_RegisterFunction("restartmap", "restartmap: restarts the current map", osdcmd_restartmap);
    OSD_RegisterFunction("restartsound","restartsound: reinitializes the sound system",osdcmd_restartsound);
    OSD_RegisterFunction("restartvid","restartvid: reinitializes the video mode",osdcmd_restartvid);
//#if !defined LUNATIC
//    OSD_RegisterFunction("addlogvar","addlogvar <gamevar>: prints the value of a gamevar", osdcmd_addlogvar);
//    OSD_RegisterFunction("setvar","setvar <gamevar> <value>: sets the value of a gamevar", osdcmd_setvar);
//    OSD_RegisterFunction("setvarvar","setvarvar <gamevar1> <gamevar2>: sets the value of <gamevar1> to <gamevar2>", osdcmd_setvar);
//    OSD_RegisterFunction("setactorvar","setactorvar <actor#> <gamevar> <value>: sets the value of <actor#>'s <gamevar> to <value>", osdcmd_setactorvar);
//#else
//    OSD_RegisterFunction("lua", "lua \"Lua code...\": runs Lunatic code", osdcmd_lua);
//#endif
    OSD_RegisterFunction("screenshot","screenshot [format]: takes a screenshot.", osdcmd_screenshot);
//
//    OSD_RegisterFunction("spawn","spawn <picnum> [palnum] [cstat] [ang] [x y z]: spawns a sprite with the given properties",osdcmd_spawn);

    OSD_RegisterFunction("unbind","unbind <key>: unbinds a key", osdcmd_unbind);
    OSD_RegisterFunction("unbindall","unbindall: unbinds all keys", osdcmd_unbindall);

    OSD_RegisterFunction("vidmode","vidmode <xdim> <ydim> <bpp> <fullscreen>: change the video mode",osdcmd_vidmode);
#ifdef USE_OPENGL
    baselayer_osdcmd_vidmode_func = osdcmd_vidmode;
#endif
//
//#ifndef NETCODE_DISABLE
//    OSD_RegisterFunction("dumpmapstates", "Dumps current snapshots to CL/Srv_MapStates.bin", osdcmd_dumpmapstate);
//    OSD_RegisterFunction("playerinfo", "Prints information about the current player", osdcmd_playerinfo);
//#endif

    return 0;
}

void GAME_onshowosd(int shown)
{
    // G_UpdateScreenArea();

    mouseLockToWindow((!shown) + 2);

    //osdshown = shown;

    // XXX: it's weird to fake a keypress like this.
//    if (numplayers == 1 && ((shown && !ud.pause_on) || (!shown && ud.pause_on)))
//        KB_KeyDown[sc_Pause] = 1;
}

void GAME_clearbackground(int numcols, int numrows)
{
    COMMON_clearbackground(numcols, numrows);
}