code:
//-------------------------------------------------------------------------
/*
Copyright (C) 2016 EDuke32 developers and contributors

This file is part of EDuke32.

EDuke32 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 "duke3d.h"
#include "scriplib.h"
#include "osdcmds.h"
#include "renderlayer.h"
#include "cmdline.h"

#include "vfs.h"

#ifdef __ANDROID__
# include "android.h"
#endif

#if defined RENDERTYPESDL && defined SDL_TARGET && SDL_TARGET > 1
# include "sdl_inc.h"
#endif

// we load this in to get default button and key assignments
// as well as setting up function mappings

#define __SETUP__   // JBF 20031211
#include "_functio.h"

hashtable_t h_gamefuncs    = { NUMGAMEFUNCTIONS<<1, NULL };

int32_t CONFIG_FunctionNameToNum(const char *func)
{
    if (!func || func[0] == '\0')
        return -1;

    return hash_findcase(&h_gamefuncs, func);
}

static char const * CONFIG_FunctionNumToName(int32_t func)
{
    if ((unsigned)func >= (unsigned)NUMGAMEFUNCTIONS)
        return "";
    return gamefunctions[func];
}

int32_t CONFIG_AnalogNameToNum(const char *func)
{
    if (!func)
        return -1;
    else if (!Bstrcasecmp(func, "analog_turning"))
        return analog_turning;
    else if (!Bstrcasecmp(func, "analog_strafing"))
        return analog_strafing;
    else if (!Bstrcasecmp(func, "analog_moving"))
        return analog_moving;
    else if (!Bstrcasecmp(func, "analog_lookingupanddown"))
        return analog_lookingupanddown;
    else
        return -1;
}

static char const * CONFIG_AnalogNumToName(int32_t func)
{
    switch (func)
    {
    case analog_turning:
        return "analog_turning";
    case analog_strafing:
        return "analog_strafing";
    case analog_moving:
        return "analog_moving";
    case analog_lookingupanddown:
        return "analog_lookingupanddown";
    }

    return "";
}

static void CONFIG_SetJoystickButtonFunction(int i, int j, int function)
{
    ud.config.JoystickFunctions[i][j] = function;
    CONTROL_MapButton(function, i, j, controldevice_joystick);
}
static void CONFIG_SetJoystickAnalogAxisSensitivity(int i, float sens)
{
    ud.config.JoystickAnalogueSensitivity[i] = sens;
    CONTROL_SetAnalogAxisSensitivity(i, sens, controldevice_joystick);
}
static void CONFIG_SetJoystickAnalogAxisInvert(int i, int invert)
{
    ud.config.JoystickAnalogueInvert[i] = invert;
    CONTROL_SetAnalogAxisInvert(i, invert);
}
static void CONFIG_SetJoystickAnalogAxisDeadSaturate(int i, int dead, int saturate)
{
    ud.config.JoystickAnalogueDead[i] = dead;
    ud.config.JoystickAnalogueSaturate[i] = saturate;
    JOYSTICK_SetDeadZone(i, dead, saturate);
}
static void CONFIG_SetJoystickDigitalAxisFunction(int i, int j, int function)
{
    ud.config.JoystickDigitalFunctions[i][j] = function;
    CONTROL_MapDigitalAxis(i, function, j);
}
static void CONFIG_SetJoystickAnalogAxisFunction(int i, int function)
{
    ud.config.JoystickAnalogueAxes[i] = function;
    CONTROL_MapAnalogAxis(i, function);
}

void CONFIG_SetDefaultKeys(const char (*keyptr)[MAXGAMEFUNCLEN], bool lazy/*=false*/)
{
    static char const s_gamefunc_[] = "gamefunc_";
    int constexpr strlen_gamefunc_  = ARRAY_SIZE(s_gamefunc_) - 1;

    if (!lazy)
    {
        Bmemset(ud.config.KeyboardKeys, 0xff, sizeof(ud.config.KeyboardKeys));
        CONTROL_ClearAllBinds();
    }

    for (int i=0; i < ARRAY_SSIZE(gamefunctions); ++i)
    {
        if (gamefunctions[i][0] == '\0')
            continue;

        auto &key = ud.config.KeyboardKeys[i];

        int const default0 = KB_StringToScanCode(keyptr[i<<1]);
        int const default1 = KB_StringToScanCode(keyptr[(i<<1)+1]);

        // skip the function if the default key is already used
        // or the function is assigned to another key
        if (lazy && (key[0] != 0xff || (CONTROL_KeyIsBound(default0) && Bstrlen(CONTROL_KeyBinds[default0].cmdstr) > strlen_gamefunc_
                        && CONFIG_FunctionNameToNum(CONTROL_KeyBinds[default0].cmdstr + strlen_gamefunc_) >= 0)))
        {
#if 0 // defined(DEBUGGINGAIDS)
            if (key[0] != 0xff)
                DLOG_F(INFO, "Skipping key '%s' bound to '%s'", keyptr[i<<1], CONTROL_KeyBinds[default0].cmdstr);
#endif
            continue;
        }

        key[0] = default0;
        key[1] = default1;

        if (key[0])
            CONTROL_FreeKeyBind(key[0]);

        if (key[1])
            CONTROL_FreeKeyBind(key[1]);

        if (i == gamefunc_Show_Console)
            OSD_CaptureKey(key[0]);
        else
            CONFIG_MapKey(i, key[0], 0, key[1], 0);
    }
}

void CONFIG_SetDefaults(void)
{
    ud.config.scripthandle = -1;

#ifdef __ANDROID__
    droidinput.forward_sens = 5.f;
    droidinput.gameControlsAlpha = 0.5;
    droidinput.hideStick = 0;
    droidinput.pitch_sens = 5.f;
    droidinput.quickSelectWeapon = 1;
    droidinput.strafe_sens = 5.f;
    droidinput.toggleCrouch = 1;
    droidinput.yaw_sens = 5.f;

    ud.setup.xdim = droidinfo.screen_width;
    ud.setup.ydim = droidinfo.screen_height;
#else
# if defined RENDERTYPESDL && SDL_MAJOR_VERSION >= 2
    uint32_t inited = SDL_WasInit(SDL_INIT_VIDEO);
    if (inited == 0)
        SDL_Init(SDL_INIT_VIDEO);
    else if (!(inited & SDL_INIT_VIDEO))
        SDL_InitSubSystem(SDL_INIT_VIDEO);

    SDL_DisplayMode dm;
    if (SDL_GetDesktopDisplayMode(0, &dm) == 0)
    {
        ud.setup.xdim = dm.w;
        ud.setup.ydim = dm.h;
    }
    else
# endif
    {
        ud.setup.xdim = 1024;
        ud.setup.ydim = 768;
    }
#endif

#ifdef USE_OPENGL
    ud.setup.bpp = 32;
#else
    ud.setup.bpp = 8;
#endif

#if defined(_WIN32)
    ud.config.MixRate = 44100;
#elif defined __ANDROID__
    ud.config.MixRate = droidinfo.audio_sample_rate;
#else
    ud.config.MixRate = 48000;
#endif

#if defined GEKKO || defined __OPENDINGUX__
    ud.config.NumVoices = 32;
    ud.camera_time = 11;
#else
    ud.config.NumVoices = 64;
    ud.camera_time    = 4;
#endif

    // currently settings.cfg is only read after the startup window launches the game,
    // and rereading binds might be fickle so just enable this
    ud.setup.usejoystick = 1;

    g_myAimMode = 1;
    g_player[0].ps->aim_mode = 1;

    ud.setup.forcesetup       = 1;
    ud.setup.noautoload       = 1;
    ud.setup.fullscreen       = 1;
    ud.setup.usemouse         = 1;

    ud.althud                 = 1;
    ud.auto_run               = 1;
    ud.automsg                = 0;
    ud.autosave               = 1;
    ud.autosavedeletion       = 1;
    ud.autovote               = 0;
    ud.brightness             = 8;
    ud.camerasprite           = -1;
    ud.cashman                = 0;
    ud.color                  = 0;
    ud.config.AmbienceToggle  = 1;
    ud.config.AutoAim         = 1;
    ud.config.CheckForUpdates = 1;
    ud.config.FXVolume        = 255;
    ud.config.JoystickAimWeight = 4;
    ud.config.JoystickViewCentering = 4;
    ud.config.JoystickAimAssist = 1;
    ud.config.MouseBias       = 0;
    ud.config.MusicDevice     = ASS_AutoDetect;
    ud.config.MusicToggle     = 1;
    ud.config.MusicVolume     = 195;
    ud.config.NumBits         = 16;
    ud.config.NumChannels     = 2;
#ifdef ASS_REVERSESTEREO
    ud.config.ReverseStereo   = 0;
#endif
    ud.config.ShowWeapons     = 0;
    ud.config.SoundToggle     = 1;
    ud.config.VoiceToggle     = 5;  // bitfield, 1 = local, 2 = dummy, 4 = other players in DM
    ud.config.useprecache     = 1;
    ud.configversion          = 0;
    ud.crosshair              = 1;
    ud.crosshairscale         = 50;
    ud.default_skill          = 1;
    ud.democams               = 1;
    ud.detail                 = 0;
    ud.display_bonus_screen   = 1;
    ud.drawweapon             = 1;
    ud.fov                    = 90;
    ud.fta_on                 = 1;
    ud.god                    = 0;
    ud.hudontop               = 0;
    ud.idplayers              = 1;
    ud.levelstats             = 0;
    ud.lockout                = 0;
    ud.m_marker               = 1;
    ud.maxautosaves           = 5;
    ud.menu_scrollbartilenum  = -1;
    ud.menu_scrollbarz        = 65536;
    ud.menu_scrollcursorz     = 65536;
    ud.menu_slidebarmargin    = 65536;
    ud.menu_slidebarz         = 65536;
    ud.menu_slidecursorz      = 65536;
    ud.menubackground         = 1;
    ud.mouseaiming            = 0;
    ud.mouseflip              = 1;
    ud.msgdisptime            = 120;
    ud.obituaries             = 1;
    ud.pwlockout[0]           = '\0';
    ud.runkey_mode            = 0;
    ud.screen_size            = 4;
    ud.screen_tilting         = 1;
    ud.screenfade             = 1;
    ud.shadow_pal             = 4;
    ud.shadows                = 1;
    ud.show_level_text        = 1;
    ud.slidebar_paldisabled   = 1;
    ud.statusbarflags         = STATUSBAR_NOSHRINK;
    ud.statusbarmode          = 1;
    ud.statusbarscale         = 100;
    ud.team                   = 0;
    ud.textscale              = 200;
    ud.viewbob                = 1;
    ud.weaponscale            = 100;
    ud.weaponsway             = 1;
    ud.weaponswitch           = 3;  // new+empty

    Bstrcpy(ud.rtsname, G_DefaultRtsFile());

    if (!CommandName)
        Bstrcpy(szPlayerName, "Player");

#ifndef EDUKE32_STANDALONE
    Bstrcpy(ud.ridecule[0], "An inspiration for birth control.");
    Bstrcpy(ud.ridecule[1], "You're gonna die for that!");
    Bstrcpy(ud.ridecule[2], "It hurts to be you.");
    Bstrcpy(ud.ridecule[3], "Lucky son of a bitch.");
    Bstrcpy(ud.ridecule[4], "Hmmm... payback time.");
    Bstrcpy(ud.ridecule[5], "You bottom dwelling scum sucker.");
    Bstrcpy(ud.ridecule[6], "Damn, you're ugly.");
    Bstrcpy(ud.ridecule[7], "Ha ha ha... wasted!");
    Bstrcpy(ud.ridecule[8], "You suck!");
    Bstrcpy(ud.ridecule[9], "AARRRGHHHHH!!!");
#endif

    CONFIG_SetDefaultKeys(keydefaults);

    memset(ud.config.MouseFunctions, -1, sizeof(ud.config.MouseFunctions));
    memset(ud.config.JoystickFunctions, -1, sizeof(ud.config.JoystickFunctions));
    memset(ud.config.JoystickDigitalFunctions, -1, sizeof(ud.config.JoystickDigitalFunctions));

    CONTROL_MouseSensitivity = DEFAULTMOUSESENSITIVITY;

    for (int i=0; i<MAXMOUSEBUTTONS; i++)
    {
        ud.config.MouseFunctions[i][0] = CONFIG_FunctionNameToNum(mousedefaults[i]);
        CONTROL_MapButton(ud.config.MouseFunctions[i][0], i, 0, controldevice_mouse);
        if (i>=4) continue;
        ud.config.MouseFunctions[i][1] = CONFIG_FunctionNameToNum(mouseclickeddefaults[i]);
        CONTROL_MapButton(ud.config.MouseFunctions[i][1], i, 1, controldevice_mouse);
    }

#if !defined GEKKO
    CONFIG_SetGameControllerDefaults();
#else
    for (int i=0; i<MAXJOYBUTTONSANDHATS; i++)
    {
        ud.config.JoystickFunctions[i][0] = CONFIG_FunctionNameToNum(joystickdefaults[i]);
        ud.config.JoystickFunctions[i][1] = CONFIG_FunctionNameToNum(joystickclickeddefaults[i]);
        CONTROL_MapButton(ud.config.JoystickFunctions[i][0], i, 0, controldevice_joystick);
        CONTROL_MapButton(ud.config.JoystickFunctions[i][1], i, 1, controldevice_joystick);
    }

    for (int i=0; i<MAXJOYAXES; i++)
    {
        ud.config.JoystickAnalogueScale[i] = DEFAULTJOYSTICKANALOGUESCALE;
        ud.config.JoystickAnalogueInvert[i] = 0;
        ud.config.JoystickAnalogueDead[i] = DEFAULTJOYSTICKANALOGUEDEAD;
        ud.config.JoystickAnalogueSaturate[i] = DEFAULTJOYSTICKANALOGUESATURATE;
        CONTROL_SetAnalogAxisScale(i, ud.config.JoystickAnalogueScale[i], controldevice_joystick);
        CONTROL_SetAnalogAxisInvert(i, 0, controldevice_joystick);

        ud.config.JoystickDigitalFunctions[i][0] = CONFIG_FunctionNameToNum(joystickdigitaldefaults[i*2]);
        ud.config.JoystickDigitalFunctions[i][1] = CONFIG_FunctionNameToNum(joystickdigitaldefaults[i*2+1]);
        CONTROL_MapDigitalAxis(i, ud.config.JoystickDigitalFunctions[i][0], 0, controldevice_joystick);
        CONTROL_MapDigitalAxis(i, ud.config.JoystickDigitalFunctions[i][1], 1, controldevice_joystick);

        ud.config.JoystickAnalogueAxes[i] = CONFIG_AnalogNameToNum(joystickanalogdefaults[i]);
        CONTROL_MapAnalogAxis(i, ud.config.JoystickAnalogueAxes[i], controldevice_joystick);
    }
#endif

    VM_OnEvent(EVENT_SETDEFAULTS, g_player[myconnectindex].ps->i, myconnectindex);
}

// generates key bindings to reflect changes to keyboard setup
void CONFIG_MapKey(int which, kb_scancode key1, kb_scancode oldkey1, kb_scancode key2, kb_scancode oldkey2)
{
    int const keys[] = { key1, key2, oldkey1, oldkey2 };
    char buf[2*MAXGAMEFUNCLEN];

    if (which == gamefunc_Show_Console)
        OSD_CaptureKey(key1);

    for (int k = 0; (unsigned)k < ARRAY_SIZE(keys); k++)
    {
        if (keys[k] == 0xff || !keys[k])
            continue;

        int match = 0;

        for (; match < ARRAY_SSIZE(sctokeylut); ++match)
        {
            if (keys[k] == sctokeylut[match].sc)
                break;
        }

        tempbuf[0] = 0;

        for (int i=NUMGAMEFUNCTIONS-1; i>=0; i--)
        {
            if (ud.config.KeyboardKeys[i][0] == keys[k] || ud.config.KeyboardKeys[i][1] == keys[k])
            {
                Bsprintf(buf, "gamefunc_%s; ", CONFIG_FunctionNumToName(i));
                Bstrcat(tempbuf,buf);
            }
        }

        int const len = Bstrlen(tempbuf);

        if (len >= 2)
        {
            tempbuf[len-2] = 0;  // cut off the trailing "; "
            CONTROL_BindKey(keys[k], tempbuf, 1, sctokeylut[match].key ? sctokeylut[match].key : "<?>");
        }
        else
        {
            CONTROL_FreeKeyBind(keys[k]);
        }
    }
}

void CONFIG_SetupMouse(void)
{
    if (ud.config.scripthandle < 0)
        return;

    char str[80];
    char temp[80];

    for (int i=0; i<MAXMOUSEBUTTONS; i++)
    {
        Bsprintf(str,"MouseButton%d",i);
        temp[0] = 0;
        if (!SCRIPT_GetString(ud.config.scripthandle,"Controls", str,temp))
            ud.config.MouseFunctions[i][0] = CONFIG_FunctionNameToNum(temp);

        Bsprintf(str,"MouseButtonClicked%d",i);
        temp[0] = 0;
        if (!SCRIPT_GetString(ud.config.scripthandle,"Controls", str,temp))
            ud.config.MouseFunctions[i][1] = CONFIG_FunctionNameToNum(temp);
    }

    for (int i=0; i<MAXMOUSEBUTTONS; i++)
    {
        CONTROL_MapButton(ud.config.MouseFunctions[i][0], i, 0, controldevice_mouse);
        CONTROL_MapButton(ud.config.MouseFunctions[i][1], i, 1,  controldevice_mouse);
    }
}

void CONFIG_SetupJoystick(void)
{
    int32_t i;
    char str[80];
    char temp[80];
    int32_t scale;
    double sens;

    if (ud.config.scripthandle < 0) return;

    for (i=0; i<MAXJOYBUTTONSANDHATS; i++)
    {
        Bsprintf(str,"ControllerButton%d",i);
        temp[0] = 0;
        if (!SCRIPT_GetString(ud.config.scripthandle,"Controls", str,temp))
            ud.config.JoystickFunctions[i][0] = CONFIG_FunctionNameToNum(temp);

        Bsprintf(str,"ControllerButtonClicked%d",i);
        temp[0] = 0;
        if (!SCRIPT_GetString(ud.config.scripthandle,"Controls", str,temp))
            ud.config.JoystickFunctions[i][1] = CONFIG_FunctionNameToNum(temp);
    }

    // map over the axes
    for (i=0; i<MAXJOYAXES; i++)
    {
        Bsprintf(str,"ControllerAnalogAxes%d",i);
        temp[0] = 0;
        if (!SCRIPT_GetString(ud.config.scripthandle, "Controls", str,temp))
            ud.config.JoystickAnalogueAxes[i] = CONFIG_AnalogNameToNum(temp);

        Bsprintf(str,"ControllerDigitalAxes%d_0",i);
        temp[0] = 0;
        if (!SCRIPT_GetString(ud.config.scripthandle, "Controls", str,temp))
            ud.config.JoystickDigitalFunctions[i][0] = CONFIG_FunctionNameToNum(temp);

        Bsprintf(str,"ControllerDigitalAxes%d_1",i);
        temp[0] = 0;
        if (!SCRIPT_GetString(ud.config.scripthandle, "Controls", str,temp))
            ud.config.JoystickDigitalFunctions[i][1] = CONFIG_FunctionNameToNum(temp);

        Bsprintf(str,"ControllerAnalogSensitivity%d",i);
        sens = ud.config.JoystickAnalogueSensitivity[i];
        SCRIPT_GetDouble(ud.config.scripthandle, "Controls", str, &sens);
        ud.config.JoystickAnalogueSensitivity[i] = sens;

        Bsprintf(str,"ControllerAnalogInvert%d",i);
        scale = ud.config.JoystickAnalogueInvert[i];
        SCRIPT_GetNumber(ud.config.scripthandle, "Controls", str,&scale);
        ud.config.JoystickAnalogueInvert[i] = scale;

        Bsprintf(str,"ControllerAnalogDead%d",i);
        scale = ud.config.JoystickAnalogueDead[i];
        SCRIPT_GetNumber(ud.config.scripthandle, "Controls", str,&scale);
        ud.config.JoystickAnalogueDead[i] = scale;

        Bsprintf(str,"ControllerAnalogSaturate%d",i);
        scale = ud.config.JoystickAnalogueSaturate[i];
        SCRIPT_GetNumber(ud.config.scripthandle, "Controls", str,&scale);
        ud.config.JoystickAnalogueSaturate[i] = scale;
    }

    for (i=0; i<MAXJOYBUTTONSANDHATS; i++)
    {
        CONTROL_MapButton(ud.config.JoystickFunctions[i][0], i, 0, controldevice_joystick);
        CONTROL_MapButton(ud.config.JoystickFunctions[i][1], i, 1,  controldevice_joystick);
    }

    for (i=0; i<MAXJOYAXES; i++)
    {
        CONTROL_MapAnalogAxis(i, ud.config.JoystickAnalogueAxes[i]);
        CONTROL_MapDigitalAxis(i, ud.config.JoystickDigitalFunctions[i][0], 0);
        CONTROL_MapDigitalAxis(i, ud.config.JoystickDigitalFunctions[i][1], 1);
        CONTROL_SetAnalogAxisSensitivity(i, ud.config.JoystickAnalogueSensitivity[i], controldevice_joystick);
        CONTROL_SetAnalogAxisInvert(i, ud.config.JoystickAnalogueInvert[i]);
        JOYSTICK_SetDeadZone(i, ud.config.JoystickAnalogueDead[i], ud.config.JoystickAnalogueSaturate[i]);
    }
}

struct GameControllerButtonSetting
{
    GameControllerButton button;
    int function;

    void apply() const
    {
        CONFIG_SetJoystickButtonFunction(button, 0, function);
    }
};
struct GameControllerAnalogAxisSetting
{
    GameControllerAxis axis;
    int function;

    void apply() const
    {
        CONFIG_SetJoystickAnalogAxisFunction(axis, function);
    }
};
struct GameControllerDigitalAxisSetting
{
    GameControllerAxis axis;
    int polarity;
    int function;

    void apply() const
    {
        CONFIG_SetJoystickDigitalAxisFunction(axis, polarity, function);
    }
};

static void CONFIG_SetGameControllerAxesModern()
{
    static GameControllerAnalogAxisSetting const analogAxes[] =
    {
        { CONTROLLER_AXIS_LEFTX, analog_strafing },
        { CONTROLLER_AXIS_LEFTY, analog_moving },
        { CONTROLLER_AXIS_RIGHTX, analog_turning },
        { CONTROLLER_AXIS_RIGHTY, analog_lookingupanddown },
    };

    CONFIG_SetJoystickAnalogAxisSensitivity(CONTROLLER_AXIS_RIGHTX, DEFAULTJOYSTICKANALOGUESENSITIVITY);
    CONFIG_SetJoystickAnalogAxisSensitivity(CONTROLLER_AXIS_RIGHTY, DEFAULTJOYSTICKANALOGUESENSITIVITY);

    for (auto const & analogAxis : analogAxes)
        analogAxis.apply();
}

void CONFIG_SetGameControllerDefaults()
{
    CONFIG_SetGameControllerDefaultsClear();
    CONFIG_SetGameControllerAxesModern();

    static GameControllerButtonSetting const buttons[] =
    {
        { CONTROLLER_BUTTON_A, gamefunc_Open },
        { CONTROLLER_BUTTON_B, gamefunc_Inventory },
        { CONTROLLER_BUTTON_Y, gamefunc_Quick_Kick },
        { CONTROLLER_BUTTON_BACK, gamefunc_Map },
        { CONTROLLER_BUTTON_LEFTSTICK, gamefunc_Run },
        { CONTROLLER_BUTTON_RIGHTSTICK, gamefunc_Toggle_Crouch },
        { CONTROLLER_BUTTON_DPAD_UP, gamefunc_Previous_Weapon },
        { CONTROLLER_BUTTON_DPAD_DOWN, gamefunc_Next_Weapon },
        { CONTROLLER_BUTTON_LEFTSHOULDER, gamefunc_Crouch },
        { CONTROLLER_BUTTON_RIGHTSHOULDER, gamefunc_Alt_Fire },
        { CONTROLLER_BUTTON_MISC, gamefunc_Third_Person_View },
    };

    static GameControllerButtonSetting const buttonsDuke[] =
    {
        { CONTROLLER_BUTTON_X, gamefunc_Inventory },
        { CONTROLLER_BUTTON_DPAD_LEFT, gamefunc_Inventory_Left },
        { CONTROLLER_BUTTON_DPAD_RIGHT, gamefunc_Inventory_Right },
    };

    static GameControllerButtonSetting const buttonsFury[] =
    {
        { CONTROLLER_BUTTON_X, gamefunc_Steroids }, // Reload
        { CONTROLLER_BUTTON_DPAD_LEFT, gamefunc_MedKit },
        { CONTROLLER_BUTTON_DPAD_RIGHT, gamefunc_NightVision }, // Radar
    };

    static GameControllerDigitalAxisSetting const digitalAxes[] =
    {
        { CONTROLLER_AXIS_TRIGGERLEFT, 1, gamefunc_Jump },
        { CONTROLLER_AXIS_TRIGGERRIGHT, 1, gamefunc_Fire },
    };

    for (auto const & button : buttons)
        button.apply();

    if (FURY)
    {
        for (auto const & button : buttonsFury)
            button.apply();
    }
    else
    {
        for (auto const & button : buttonsDuke)
            button.apply();
    }

    for (auto const & digitalAxis : digitalAxes)
        digitalAxis.apply();

    ud.config.JoystickAimAssist     = 1;
    ud.config.JoystickAimWeight     = 4;
    ud.config.JoystickViewCentering = 4;
    ud.config.controllerRumble = 1;
}

void CONFIG_SetGameControllerDefaultsClear()
{
    for (int i=0; i<MAXJOYBUTTONSANDHATS; i++)
    {
        CONFIG_SetJoystickButtonFunction(i, 0, -1);
        CONFIG_SetJoystickButtonFunction(i, 1, -1);
    }

    for (int i=0; i<MAXJOYAXES; i++)
    {
        CONFIG_SetJoystickAnalogAxisSensitivity(i, DEFAULTJOYSTICKANALOGUESENSITIVITY);
        CONFIG_SetJoystickAnalogAxisInvert(i, 0);
        CONFIG_SetJoystickAnalogAxisDeadSaturate(i, DEFAULTJOYSTICKANALOGUEDEAD, DEFAULTJOYSTICKANALOGUESATURATE);

        CONFIG_SetJoystickDigitalAxisFunction(i, 0, -1);
        CONFIG_SetJoystickDigitalAxisFunction(i, 1, -1);

        CONFIG_SetJoystickAnalogAxisFunction(i, -1);
    }
}

int CONFIG_ReadSetup(void)
{
    char tempbuf[1024];

    CONTROL_ClearAssignments();
    CONFIG_SetDefaults();

    ud.config.setupread = 1;
    pathsearchmode = 1;

    if (ud.config.scripthandle < 0)
    {
        if (buildvfs_exists(g_setupFileName))  // JBF 20031211
            ud.config.scripthandle = SCRIPT_Load(g_setupFileName);
#if !defined(EDUKE32_TOUCH_DEVICES) && !defined(EDUKE32_STANDALONE)
        else if (buildvfs_exists(SETUPFILENAME))
        {
            int const i = wm_ynbox("Import Configuration Settings",
                                   "Configuration file %s not found. "
                                   "Import configuration data from %s?",
                                   g_setupFileName, SETUPFILENAME);
            if (i)
                ud.config.scripthandle = SCRIPT_Load(SETUPFILENAME);
        }
#endif
    }

    pathsearchmode = 0;

    if (ud.config.scripthandle < 0)
        return -1;

    char commmacro[] = "CommbatMacro# ";

    for (int i = 0; i < MAXRIDECULE; i++)
    {
        commmacro[13] = i+'0';
        SCRIPT_GetString(ud.config.scripthandle, "Comm Setup",commmacro,&ud.ridecule[i][0]);
    }

    if (!CommandName)
    {
        Bmemset(tempbuf, 0, sizeof(tempbuf));
        SCRIPT_GetString(ud.config.scripthandle, "Comm Setup","PlayerName",&tempbuf[0]);

        char nameBuf[64];

        while (Bstrlen(OSD_StripColors(nameBuf, tempbuf)) > 10)
            tempbuf[Bstrlen(tempbuf) - 1] = '\0';

        Bstrncpyz(szPlayerName, tempbuf, sizeof(szPlayerName));
    }

    SCRIPT_GetString(ud.config.scripthandle, "Comm Setup","RTSName",&ud.rtsname[0]);

    SCRIPT_GetNumber(ud.config.scripthandle, "Setup", "ConfigVersion", &ud.configversion);
    SCRIPT_GetNumber(ud.config.scripthandle, "Setup", "ForceSetup", &ud.setup.forcesetup);
    SCRIPT_GetNumber(ud.config.scripthandle, "Setup", "NoAutoLoad", &ud.setup.noautoload);

    int32_t cachesize;
    SCRIPT_GetNumber(ud.config.scripthandle, "Setup", "CacheSize", &cachesize);

    if (cachesize > MAXCACHE1DSIZE)
        MAXCACHE1DSIZE = cachesize;

    if (g_noSetup == 0 && g_modDir[0] == '/')
    {
        SCRIPT_GetString(ud.config.scripthandle, "Setup","ModDir",&g_modDir[0]);

        if (!buildvfs_isdir(g_modDir))
        {
            LOG_F(WARNING, "Invalid user directory specified in cfg file: %s", g_modDir);
            Bsprintf(g_modDir,"/");
        }
    }

    if (g_grpNamePtr == NULL && g_addonNum == 0)
    {
        SCRIPT_GetStringPtr(ud.config.scripthandle, "Setup", "SelectedGRP", &g_grpNamePtr);
        if (g_grpNamePtr && !Bstrlen(g_grpNamePtr))
            g_grpNamePtr = dup_filename(G_DefaultGrpFile());
    }

    if (!NAM_WW2GI)
    {
        SCRIPT_GetNumber(ud.config.scripthandle, "Screen Setup", "Out", &ud.lockout);
        SCRIPT_GetString(ud.config.scripthandle, "Screen Setup", "Password", &ud.pwlockout[0]);
    }

    SCRIPT_GetNumber(ud.config.scripthandle, "Screen Setup", "MaxRefreshFreq", (int32_t *)&maxrefreshfreq);
    SCRIPT_GetNumber(ud.config.scripthandle, "Screen Setup", "ScreenBPP", &ud.setup.bpp);
    SCRIPT_GetNumber(ud.config.scripthandle, "Screen Setup", "ScreenDisplay", &r_displayindex);
    SCRIPT_GetNumber(ud.config.scripthandle, "Screen Setup", "ScreenHeight", &ud.setup.ydim);
    SCRIPT_GetNumber(ud.config.scripthandle, "Screen Setup", "ScreenMode", &ud.setup.fullscreen);
    SCRIPT_GetNumber(ud.config.scripthandle, "Screen Setup", "ScreenWidth", &ud.setup.xdim);
    vec2_t windowPos;
    if (!SCRIPT_GetNumber(ud.config.scripthandle, "Screen Setup", "WindowPosX", &windowPos.x)
        && !SCRIPT_GetNumber(ud.config.scripthandle, "Screen Setup", "WindowPosY", &windowPos.y))
    {
        g_windowPos = windowPos;
        g_windowPosValid = true;
    }

    if (ud.setup.bpp < 8) ud.setup.bpp = 32;

#ifdef POLYMER
    int32_t rendmode = 0;
    SCRIPT_GetNumber(ud.config.scripthandle, "Screen Setup", "Polymer", &rendmode);
    glrendmode = (rendmode > 0) ? REND_POLYMER : REND_POLYMOST;
#endif

    SCRIPT_GetNumber(ud.config.scripthandle, "Misc", "Executions", &ud.executions);

#ifdef _WIN32
    SCRIPT_GetNumber(ud.config.scripthandle, "Updates", "CheckForUpdates", &ud.config.CheckForUpdates);
    SCRIPT_GetNumber(ud.config.scripthandle, "Updates", "LastUpdateCheck", &ud.config.LastUpdateCheck);
#endif

    // restore localization
    char locale[64] = "en";
    SCRIPT_GetString(ud.config.scripthandle, "Misc", "Locale", &locale[0]);
    localeSetCurrent(locale);

    ud.config.setupread = 1;
    return 0;
}

void CONFIG_ReadSettings(void)
{
    char *const setupFileName = Xstrdup(g_setupFileName);
    char *const p = strtok(setupFileName, ".");

    if (!p || !Bstrcmp(g_setupFileName, SETUPFILENAME))
        Bsprintf(tempbuf, "settings.cfg");
    else
        Bsprintf(tempbuf, "%s_settings.cfg", p);

    Xfree(setupFileName);

    OSD_Exec(tempbuf);

    ud.config.setupread = 2;

    return;
}

void CONFIG_WriteSettings(void) // save binds and aliases to <cfgname>_settings.cfg
{
    if (ud.config.setupread != 2) return;

    char filename[BMAX_PATH];

    if (!Bstrcmp(g_setupFileName, SETUPFILENAME))
        Bsprintf(filename, "settings.cfg");
    else
        Bsprintf(filename, "%s_settings.cfg", strtok(g_setupFileName, "."));

    buildvfs_FILE fp = buildvfs_fopen_write(filename);

    if (fp)
    {
        buildvfs_fputstr(fp, "// this file is automatically generated by ");
        buildvfs_fputstrptr(fp, AppProperName);
        buildvfs_fputstr(fp,"\nunbindall\n");

        for (int i=0; i<MAXBOUNDKEYS+MAXMOUSEBUTTONS; i++)
        {
            if (CONTROL_KeyIsBound(i))
            {
                buildvfs_fputstr(fp, "bind \"");
                buildvfs_fputstrptr(fp, CONTROL_KeyBinds[i].key);
                if (CONTROL_KeyBinds[i].repeat)
                    buildvfs_fputstr(fp, "\" \"");
                else
                    buildvfs_fputstr(fp, "\" norepeat \"");
                buildvfs_fputstrptr(fp, CONTROL_KeyBinds[i].cmdstr);
                buildvfs_fputstr(fp, "\"\n");
            }
        }

        for (int i=0; i<NUMGAMEFUNCTIONS; ++i)
        {
            char const * name = CONFIG_FunctionNumToName(i);
            if (name && name[0] != '\0' && (ud.config.KeyboardKeys[i][0] == 0xff || !ud.config.KeyboardKeys[i][0]))
            {
                buildvfs_fputstr(fp, "unbound ");
                buildvfs_fputstrptr(fp, name);
                buildvfs_fputstr(fp, "\n");
            }
        }

        OSD_WriteAliases(fp);

        if (g_crosshairSum != -1 && g_crosshairSum != DefaultCrosshairColors.r+(DefaultCrosshairColors.g<<8)+(DefaultCrosshairColors.b<<16))
        {
            buildvfs_fputstr(fp, "crosshaircolor ");
            char buf[64];
            snprintf(buf, sizeof(buf), "%d %d %d\n", CrosshairColors.r, CrosshairColors.g, CrosshairColors.b);
            buildvfs_fputstrptr(fp, buf);
        }

        OSD_WriteCvars(fp);

        buildvfs_fclose(fp);

        LOG_F(INFO, "Wrote %s", filename);

        return;
    }

    LOG_F(ERROR, "Unable to write %s: %s.", filename, strerror(errno));
}

void CONFIG_WriteSetup(uint32_t flags)
{
    if (!ud.config.setupread) return;

    if (ud.config.scripthandle < 0)
        ud.config.scripthandle = SCRIPT_Init(g_setupFileName);

    SCRIPT_PutNumber(ud.config.scripthandle, "Misc", "Executions", ud.executions, FALSE, FALSE);

    SCRIPT_PutNumber(ud.config.scripthandle, "Setup", "CacheSize", MAXCACHE1DSIZE, FALSE, FALSE);
    SCRIPT_PutNumber(ud.config.scripthandle, "Setup", "ConfigVersion", BYTEVERSION_EDUKE32, FALSE, FALSE);
    SCRIPT_PutNumber(ud.config.scripthandle, "Setup", "ForceSetup", ud.setup.forcesetup, FALSE, FALSE);
    SCRIPT_PutNumber(ud.config.scripthandle, "Setup", "NoAutoLoad", ud.setup.noautoload, FALSE, FALSE);

#ifdef POLYMER
    SCRIPT_PutNumber(ud.config.scripthandle, "Screen Setup", "Polymer", glrendmode == REND_POLYMER, FALSE, FALSE);
#endif

    SCRIPT_PutNumber(ud.config.scripthandle, "Screen Setup", "ScreenBPP", ud.setup.bpp, FALSE, FALSE);
    SCRIPT_PutNumber(ud.config.scripthandle, "Screen Setup", "ScreenDisplay", r_displayindex, FALSE, FALSE);
    SCRIPT_PutNumber(ud.config.scripthandle, "Screen Setup", "ScreenHeight", ud.setup.ydim, FALSE, FALSE);
    SCRIPT_PutNumber(ud.config.scripthandle, "Screen Setup", "ScreenMode", ud.setup.fullscreen, FALSE, FALSE);
    SCRIPT_PutNumber(ud.config.scripthandle, "Screen Setup", "ScreenWidth", ud.setup.xdim, FALSE, FALSE);

    if (g_grpNamePtr && !g_addonNum)
        SCRIPT_PutString(ud.config.scripthandle, "Setup", "SelectedGRP", g_grpNamePtr);

#ifdef STARTUP_SETUP_WINDOW
    if (g_noSetup == 0)
        SCRIPT_PutString(ud.config.scripthandle, "Setup", "ModDir", &g_modDir[0]);
#endif
    // exit early after only updating the values that can be changed from the startup window
    if (flags & 1)
    {
        SCRIPT_Save(ud.config.scripthandle, g_setupFileName);
        SCRIPT_Free(ud.config.scripthandle);
        return;
    }

    SCRIPT_PutNumber(ud.config.scripthandle, "Screen Setup", "MaxRefreshFreq", maxrefreshfreq, FALSE, FALSE);

    if (g_windowPosValid)
    {
        SCRIPT_PutNumber(ud.config.scripthandle, "Screen Setup", "WindowPosX", g_windowPos.x, FALSE, FALSE);
        SCRIPT_PutNumber(ud.config.scripthandle, "Screen Setup", "WindowPosY", g_windowPos.y, FALSE, FALSE);
    }

    if (!NAM_WW2GI)
    {
        SCRIPT_PutNumber(ud.config.scripthandle, "Screen Setup", "Out",ud.lockout,FALSE,FALSE);
        SCRIPT_PutString(ud.config.scripthandle, "Screen Setup", "Password",ud.pwlockout);
    }

#ifdef _WIN32
    SCRIPT_PutNumber(ud.config.scripthandle, "Updates", "CheckForUpdates", ud.config.CheckForUpdates, FALSE, FALSE);
    SCRIPT_PutNumber(ud.config.scripthandle, "Updates", "LastUpdateCheck", ud.config.LastUpdateCheck, FALSE, FALSE);
#endif

    if (ud.setup.usemouse)
    {
        for (int i=0; i<MAXMOUSEBUTTONS; i++)
        {
            Bsprintf(buf, "MouseButton%d", i);
            SCRIPT_PutString(ud.config.scripthandle, "Controls", buf, CONFIG_FunctionNumToName(ud.config.MouseFunctions[i][0]));

            if (i >= (MAXMOUSEBUTTONS-2)) continue;

            Bsprintf(buf, "MouseButtonClicked%d", i);
            SCRIPT_PutString(ud.config.scripthandle, "Controls", buf, CONFIG_FunctionNumToName(ud.config.MouseFunctions[i][1]));
        }
    }

    if (ud.setup.usejoystick)
    {
        for (int dummy=0; dummy<MAXJOYBUTTONSANDHATS; dummy++)
        {
            Bsprintf(buf, "ControllerButton%d", dummy);
            SCRIPT_PutString(ud.config.scripthandle, "Controls", buf, CONFIG_FunctionNumToName(ud.config.JoystickFunctions[dummy][0]));

            Bsprintf(buf, "ControllerButtonClicked%d", dummy);
            SCRIPT_PutString(ud.config.scripthandle, "Controls", buf, CONFIG_FunctionNumToName(ud.config.JoystickFunctions[dummy][1]));
        }
        for (int dummy=0; dummy<MAXJOYAXES; dummy++)
        {
            Bsprintf(buf, "ControllerAnalogAxes%d", dummy);
            SCRIPT_PutString(ud.config.scripthandle, "Controls", buf, CONFIG_AnalogNumToName(ud.config.JoystickAnalogueAxes[dummy]));

            Bsprintf(buf, "ControllerDigitalAxes%d_0", dummy);
            SCRIPT_PutString(ud.config.scripthandle, "Controls", buf, CONFIG_FunctionNumToName(ud.config.JoystickDigitalFunctions[dummy][0]));

            Bsprintf(buf, "ControllerDigitalAxes%d_1", dummy);
            SCRIPT_PutString(ud.config.scripthandle, "Controls", buf, CONFIG_FunctionNumToName(ud.config.JoystickDigitalFunctions[dummy][1]));

            Bsprintf(buf, "ControllerAnalogSensitivity%d", dummy);
            SCRIPT_PutDouble(ud.config.scripthandle, "Controls", buf, ud.config.JoystickAnalogueSensitivity[dummy], FALSE);

            Bsprintf(buf, "ControllerAnalogInvert%d", dummy);
            SCRIPT_PutNumber(ud.config.scripthandle, "Controls", buf, ud.config.JoystickAnalogueInvert[dummy], FALSE, FALSE);

            Bsprintf(buf, "ControllerAnalogDead%d", dummy);
            SCRIPT_PutNumber(ud.config.scripthandle, "Controls", buf, ud.config.JoystickAnalogueDead[dummy], FALSE, FALSE);

            Bsprintf(buf, "ControllerAnalogSaturate%d", dummy);
            SCRIPT_PutNumber(ud.config.scripthandle, "Controls", buf, ud.config.JoystickAnalogueSaturate[dummy], FALSE, FALSE);
        }
    }

    if (!CommandName)
        SCRIPT_PutString(ud.config.scripthandle, "Comm Setup","PlayerName",&szPlayerName[0]);

    SCRIPT_PutString(ud.config.scripthandle, "Comm Setup","RTSName",&ud.rtsname[0]);

    char commmacro[] = "CommbatMacro# ";

    for (int dummy = 0; dummy < MAXRIDECULE; dummy++)
    {
        commmacro[13] = dummy+'0';
        SCRIPT_PutString(ud.config.scripthandle, "Comm Setup",commmacro,&ud.ridecule[dummy][0]);
    }

    // save localization
    const char* locale = localeGetCurrent();
    SCRIPT_PutString(ud.config.scripthandle, "Misc", "Locale", locale ? locale : "en");

    SCRIPT_Save(ud.config.scripthandle, g_setupFileName);

    if ((flags & 2) == 0)
        SCRIPT_Free(ud.config.scripthandle);

    LOG_F(INFO, "Wrote %s",g_setupFileName);
    CONFIG_WriteSettings();
    Bfflush(NULL);
}

char const * CONFIG_GetGameFuncOnKeyboard(int gameFunc)
{
    const char * string0 = KB_ScanCodeToString(ud.config.KeyboardKeys[gameFunc][0]);
    return string0[0] == '\0' ? KB_ScanCodeToString(ud.config.KeyboardKeys[gameFunc][1]) : string0;
}

char const * CONFIG_GetGameFuncOnMouse(int gameFunc)
{
    for (int j = 0; j < 2; ++j)
        for (int i = 0; i < joystick.numButtons; ++i)
            if (ud.config.JoystickFunctions[i][j] == gameFunc)
                return joyGetName(1, i);

    for (int i = 0; i < joystick.numAxes; ++i)
        for (int j = 0; j < 2; ++j)
            if (ud.config.JoystickDigitalFunctions[i][j] == gameFunc)
                return joyGetName(0, i);

    return "";
}

char const * CONFIG_GetGameFuncOnJoystick(int gameFunc)
{
    for (int j = 0; j < 2; ++j)
        for (int i = 0; i < joystick.numButtons; ++i)
            if (ud.config.JoystickFunctions[i][j] == gameFunc)
                return joyGetName(1, i);

    for (int i = 0; i < joystick.numAxes; ++i)
        for (int j = 0; j < 2; ++j)
            if (ud.config.JoystickDigitalFunctions[i][j] == gameFunc)
                return joyGetName(0, i);

    return "";
}

static const char *CONFIG_GetMapEntryName(char m[], char const * const mapname)
{
    strcpy(m, mapname);

    char *p = strrchr(m, '/');
    if (!p) p = strrchr(m, '\\');
    if (p) Bmemmove(m, p, Bstrlen(p)+1);
    for (p=m; *p; p++) *p = tolower(*p);

    // cheap hack because SCRIPT_GetNumber doesn't like the slashes
    p = m;
    while (*p == '/') p++;

    return p;
}

static void CONFIG_GetMD4EntryName(char m[], uint8_t const * const md4)
{
    sprintf(m, "MD4_%08x%08x%08x%08x",
            B_BIG32(B_UNBUF32(&md4[0])), B_BIG32(B_UNBUF32(&md4[4])),
            B_BIG32(B_UNBUF32(&md4[8])), B_BIG32(B_UNBUF32(&md4[12])));
}

int32_t CONFIG_GetMapBestTime(char const * const mapname, uint8_t const * const mapmd4)
{
    if (!ud.config.setupread || ud.config.scripthandle < 0)
        return -1;

    char m[37];

    CONFIG_GetMD4EntryName(m, mapmd4);

    int32_t t = -1;
    if (SCRIPT_GetNumber(ud.config.scripthandle, "MapTimes", m, &t))
    {
        // fall back to map filenames
        char m2[BMAX_PATH];
        auto p = CONFIG_GetMapEntryName(m2, mapname);

        SCRIPT_GetNumber(ud.config.scripthandle, "MapTimes", p, &t);
    }

    return t;
}

int CONFIG_SetMapBestTime(uint8_t const * const mapmd4, int32_t tm)
{
    if (ud.config.scripthandle < 0 && (ud.config.scripthandle = SCRIPT_Init(g_setupFileName)) < 0)
        return -1;

    char m[37];

    CONFIG_GetMD4EntryName(m, mapmd4);
    SCRIPT_PutNumber(ud.config.scripthandle, "MapTimes", m, tm, FALSE, FALSE);

    return 0;
}


code:
//-------------------------------------------------------------------------
/*
Copyright (C) 2010 EDuke32 developers and contributors

This file is part of EDuke32.

EDuke32 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.
*/
//-------------------------------------------------------------------------

#ifndef config_public_h_
#define config_public_h_

#include "function.h"

int  CONFIG_ReadSetup(void);
void CONFIG_WriteSetup(uint32_t flags);
void CONFIG_ReadSettings(void);
void CONFIG_SetDefaults(void);
void CONFIG_SetupMouse(void);
void CONFIG_SetupJoystick(void);
void CONFIG_SetDefaultKeys(const char (*keyptr)[MAXGAMEFUNCLEN], bool lazy=false);

void CONFIG_SetGameControllerDefaults(void);
void CONFIG_SetGameControllerDefaultsClear(void);

int32_t CONFIG_GetMapBestTime(char const *mapname, uint8_t const *mapmd4);
int     CONFIG_SetMapBestTime(uint8_t const *mapmd4, int32_t tm);

int32_t CONFIG_FunctionNameToNum(const char *func);

int32_t     CONFIG_AnalogNameToNum(const char *func);

void CONFIG_MapKey(int which, kb_scancode key1, kb_scancode oldkey1, kb_scancode key2, kb_scancode oldkey2);

const char * CONFIG_GetGameFuncOnKeyboard(int gameFunc);
const char * CONFIG_GetGameFuncOnJoystick(int gameFunc);

#endif

repo_name: orochi/nblood

license: mit


code:
//-------------------------------------------------------------------------
/*
Copyright (C) 2010 EDuke32 developers and contributors

This file is part of EDuke32.

EDuke32 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 "demo.h"
#include "duke3d.h"
#include "input.h"
#include "menus.h"
#include "savegame.h"
#include "screens.h"

#include "vfs.h"

char g_firstDemoFile[BMAX_PATH];

buildvfs_FILE g_demo_filePtr{};  // write
buildvfs_kfd g_demo_recFilePtr = buildvfs_kfd_invalid;  // read

int32_t g_demo_cnt;
int32_t g_demo_goalCnt=0;
int32_t g_demo_totalCnt;
int32_t g_demo_paused=0;
int32_t g_demo_rewind=0;
int32_t g_demo_showStats=1;
static int32_t g_demo_soundToggle;

static int32_t demo_hasdiffs, demorec_diffs=1, demorec_difftics = 2*REALGAMETICSPERSEC;
int32_t demoplay_diffs=1;
int32_t demorec_diffs_cvar=1;
int32_t demorec_force_cvar=0;
int32_t demorec_difftics_cvar = 2*REALGAMETICSPERSEC;
int32_t demorec_diffcompress_cvar=1;
int32_t demorec_synccompress_cvar=1;
int32_t demorec_seeds_cvar=1;
int32_t demoplay_showsync=1;

static int32_t demo_synccompress=1, demorec_seeds=1, demo_hasseeds;

static void Demo_RestoreModes(int32_t menu)
{
    if (menu)
        Menu_Open(myconnectindex);
    else
        Menu_Close(myconnectindex);

    g_player[myconnectindex].ps->gm &= ~MODE_GAME;
    g_player[myconnectindex].ps->gm |= MODE_DEMO;
}

void Demo_PrepareWarp(void)
{
    FX_StopAllSounds();
    S_ClearSoundLocks();
}

static void Demo_SetAllClocks(int32_t clocktime)
{
    totalclock = ototalclock = lockclock = clocktime;
}

static int32_t G_OpenDemoRead(int32_t g_whichDemo) // 0 = mine
{
    int32_t i;
    savehead_t saveh;

    char demofn[14];
    const char *demofnptr;

    if (g_whichDemo == 1 && g_firstDemoFile[0])
    {
        demofnptr = g_firstDemoFile;
    }
    else
    {
        Bsprintf(demofn, DEMOFN_FMT, g_whichDemo);
        demofnptr = demofn;
    }

    g_demo_recFilePtr = kopen4loadfrommod(demofnptr, g_loadFromGroupOnly);
    if (g_demo_recFilePtr == buildvfs_kfd_invalid)
        return 0;

    Bassert(g_whichDemo >= 1);
    i = sv_loadsnapshot(g_demo_recFilePtr, -g_whichDemo, &saveh);
    if (i)
    {
        LOG_F(INFO, "Unable to play demo #%d (code: %d).", g_whichDemo, i);
        kclose(g_demo_recFilePtr); g_demo_recFilePtr = buildvfs_kfd_invalid;
        return 0;
    }

    demo_hasdiffs = saveh.recdiffsp;
    g_demo_totalCnt = saveh.reccnt;
    demo_synccompress = saveh.synccompress;

    demo_hasseeds = demo_synccompress&2;
    demo_synccompress &= 1;

    i = g_demo_totalCnt/REALGAMETICSPERSEC;
    LOG_F(INFO, "Demo #%d duration is %d min %d sec", g_whichDemo, i/60, i%60);

    g_demo_cnt = 1;
    ud.reccnt = 0;

    ud.god = ud.cashman = ud.eog = ud.showallmap = 0;
    ud.noclip = ud.scrollmode = ud.overhead_on = 0; //= ud.pause_on = 0;

    Demo_SetAllClocks(0);

    return 1;
}

#if KRANDDEBUG
extern void krd_enable(int32_t which);
extern int32_t krd_print(const char *filename);
#endif

void G_OpenDemoWrite(void)
{
    char demofn[BMAX_PATH];
    int32_t i, demonum=1;

    if (ud.recstat == 2)
    {
        kclose(g_demo_recFilePtr);
        g_demo_recFilePtr = buildvfs_kfd_invalid;
    }

    if ((g_player[myconnectindex].ps->gm&MODE_GAME) && g_player[myconnectindex].ps->dead_flag)
    {
        Bstrcpy(apStrings[QUOTE_RESERVED4], "CANNOT START DEMO RECORDING WHEN DEAD!");
        P_DoQuote(QUOTE_RESERVED4, g_player[myconnectindex].ps);
        ud.recstat = ud.m_recstat = 0;
        return;
    }
    if (demorec_diffs_cvar && !demorec_force_cvar)
        for (i=1; i<g_scriptSize-2; i++)
        {
            intptr_t w=apScript[i];
            if (VM_DECODE_INST(w)==CON_RESIZEARRAY && VM_DECODE_LINE_NUMBER(w) && apScript[i+1]>=0 && apScript[i+1]<g_gameArrayCount)
            {
                LOG_F(ERROR, "The CON code possibly contains the CON_RESIZEARRAY command. "
                             "Gamearrays that change their size during the game are unsupported by "
                             "the demo recording system. If you are sure that your code doesn't "
                             "contain the CON_RESIZEARRAY command, you can force recording with the "
                             "`demorec_force' cvar. Alternatively, you can disable diff recording "
                             "with the `demorec_diffs' cvar.");
                Bstrcpy(apStrings[QUOTE_RESERVED4], "FAILED TO START DEMO RECORDING. SEE LOG FILE.");
                P_DoQuote(QUOTE_RESERVED4, g_player[myconnectindex].ps);
                ud.recstat = ud.m_recstat = 0;
                return;
            }
        }
    do
    {
        if (demonum == MAXDEMOS)
            return;

        if (G_ModDirSnprintf(demofn, sizeof(demofn), DEMOFN_FMT, demonum))
        {
            LOG_F(ERROR, "Couldn't start demo writing: INTERNAL ERROR: file name too long");
            goto error_wopen_demo;
        }

        demonum++;

        g_demo_filePtr = buildvfs_fopen_read(demofn);
        if (g_demo_filePtr == NULL)
            break;

        MAYBE_FCLOSE_AND_NULL(g_demo_filePtr);
    }
    while (1);

    g_demo_filePtr = buildvfs_fopen_write(demofn);
    if (g_demo_filePtr == NULL)
        return;

    i=sv_saveandmakesnapshot(g_demo_filePtr, nullptr, -1, demorec_diffs_cvar, demorec_diffcompress_cvar,
                             demorec_synccompress_cvar|(demorec_seeds_cvar<<1));
    if (i)
    {
        MAYBE_FCLOSE_AND_NULL(g_demo_filePtr);
error_wopen_demo:
        Bstrcpy(apStrings[QUOTE_RESERVED4], "FAILED STARTING DEMO RECORDING. SEE OSD FOR DETAILS.");
        P_DoQuote(QUOTE_RESERVED4, g_player[myconnectindex].ps);
        ud.recstat = ud.m_recstat = 0;
        return;
    }

    demorec_seeds = demorec_seeds_cvar;
    demorec_diffs = demorec_diffs_cvar;
    demo_synccompress = demorec_synccompress_cvar;
    demorec_difftics = demorec_difftics_cvar;

    Bsprintf(apStrings[QUOTE_RESERVED4], "DEMO %d RECORDING STARTED", demonum-1);
    P_DoQuote(QUOTE_RESERVED4, g_player[myconnectindex].ps);

    ud.reccnt = 0;
    ud.recstat = ud.m_recstat = 1;  //

#if KRANDDEBUG
    krd_enable(1);
#endif
    g_demo_cnt = 1;
}

// demo_profile: < 0: prepare
static int32_t g_demo_playFirstFlag, g_demo_profile, g_demo_stopProfile;
static int32_t g_demo_exitAfter;
void Demo_PlayFirst(int32_t prof, int32_t exitafter)
{
    g_demo_playFirstFlag = 1;
    g_demo_exitAfter = exitafter;
    Bassert(prof >= 0);
    g_demo_profile = -prof;  // prepare
}

void Demo_SetFirst(const char *demostr)
{
    char *tailptr;
    int32_t i = Bstrtol(demostr, &tailptr, 10);

    if (tailptr==demostr+Bstrlen(demostr) && (unsigned)i < MAXDEMOS)  // demo number passed
        Bsprintf(g_firstDemoFile, DEMOFN_FMT, i);
    else  // demo file name passed
        maybe_append_ext(g_firstDemoFile, sizeof(g_firstDemoFile), demostr, ".edm");
}

static uint8_t g_demo_seedbuf[RECSYNCBUFSIZ];

static void Demo_WriteSync()
{
    int16_t tmpreccnt;

    buildvfs_fwrite("sYnC", 4, 1, g_demo_filePtr);
    tmpreccnt = (int16_t)ud.reccnt;
    buildvfs_fwrite(&tmpreccnt, sizeof(int16_t), 1, g_demo_filePtr);
    if (demorec_seeds)
        buildvfs_fwrite(g_demo_seedbuf, 1, ud.reccnt, g_demo_filePtr);

    if (demo_synccompress)
        dfwrite_LZ4(recsync, sizeof(input_t), ud.reccnt, g_demo_filePtr);
    else //if (demo_synccompress==0)
        buildvfs_fwrite(recsync, sizeof(input_t), ud.reccnt, g_demo_filePtr);

    ud.reccnt = 0;
}

void G_DemoRecord(void)
{
    int16_t i;

    g_demo_cnt++;

    if (demorec_diffs && (g_demo_cnt%demorec_difftics == 1))
    {
        sv_writediff(g_demo_filePtr);
        demorec_difftics = demorec_difftics_cvar;
    }

    if (demorec_seeds)
        g_demo_seedbuf[ud.reccnt] = (uint8_t)(randomseed>>24);

    for (TRAVERSE_CONNECT(i))
    {
        Bmemcpy(&recsync[ud.reccnt], &g_player[i].input, sizeof(input_t));
        ud.reccnt++;
    }

    if (ud.reccnt > RECSYNCBUFSIZ-MAXPLAYERS || (demorec_diffs && (g_demo_cnt%demorec_difftics == 0)))
        Demo_WriteSync();
}

void G_CloseDemoWrite(void)
{
    if (ud.recstat == 1)
    {
        if (ud.reccnt > 0)
            Demo_WriteSync();

        buildvfs_fwrite("EnD!", 4, 1, g_demo_filePtr);

        // lastly, we need to write the number of written recsyncs to the demo file
        if (buildvfs_fseek_abs(g_demo_filePtr, offsetof(savehead_t, reccnt)))
            perror("G_CloseDemoWrite: final fseek");
        else
            buildvfs_fwrite(&g_demo_cnt, sizeof(g_demo_cnt), 1, g_demo_filePtr);

        ud.recstat = ud.m_recstat = 0;
        MAYBE_FCLOSE_AND_NULL(g_demo_filePtr);

        sv_freemem();

        Bstrcpy(apStrings[QUOTE_RESERVED4], "DEMO RECORDING STOPPED");
        P_DoQuote(QUOTE_RESERVED4, g_player[myconnectindex].ps);
    }
#if KRANDDEBUG
    krd_print("krandrec.log");
#endif
}

static int32_t g_whichDemo = 1;

static int32_t Demo_UpdateState(int32_t frominit)
{
    int32_t j = g_player[myconnectindex].ps->gm&MODE_MENU;
    int32_t k = sv_updatestate(frominit);
    //                            tmpdifftime = g_demo_cnt+12;
    Demo_RestoreModes(j);

    if (k)
        LOG_F(ERROR, "sv_updatestate() returned %d.", k);
    return k;
}

#define CORRUPT(code) do { corruptcode=code; goto corrupt; } while(0)

static int32_t Demo_ReadSync(int32_t errcode)
{
    uint16_t si;
    int32_t i;

    if (kread(g_demo_recFilePtr, &si, sizeof(uint16_t)) != sizeof(uint16_t))
        return errcode;

    i = si;
    if (demo_hasseeds)
    {
        if (kread(g_demo_recFilePtr, g_demo_seedbuf, i) != i)
            return errcode;
    }

    if (demo_synccompress)
    {
        if (kdfread_LZ4(recsync, sizeof(input_t), i, g_demo_recFilePtr) != i)
            return errcode+1;
    }
    else
    {
        int32_t bytes = sizeof(input_t)*i;

        if (kread(g_demo_recFilePtr, recsync, bytes) != bytes)
            return errcode+2;
    }

    ud.reccnt = i;
    return 0;
}

////////// DEMO PROFILING (TIMEDEMO MODE) //////////
static struct {
    int32_t numtics, numframes;
    double totalgamems;
    double totalroomsdrawms, totalrestdrawms;
    double starthiticks;
} g_prof;

int32_t Demo_IsProfiling(void)
{
    return (g_demo_profile > 0);
}

static void Demo_StopProfiling(void)
{
    g_demo_stopProfile = 1;
}

static void Demo_GToc(double t)
{
    g_prof.numtics++;
    g_prof.totalgamems += timerGetFractionalTicks()-t;
}

static void Demo_RToc(double t1, double t2)
{
    g_prof.numframes++;
    g_prof.totalroomsdrawms += t2-t1;
    g_prof.totalrestdrawms += timerGetFractionalTicks()-t2;
}

static void Demo_DisplayProfStatus(void)
{
    char buf[64];

    static int32_t lastpercent=-1;
    int32_t percent = (100*g_demo_cnt)/g_demo_totalCnt;

    if (lastpercent == percent)
        return;
    lastpercent = percent;

    videoClearScreen(0);
    Bsnprintf(buf, sizeof(buf), "timing... %d/%d game tics (%d %%)",
              g_demo_cnt, g_demo_totalCnt, percent);
    gametext_center(60, buf);
    videoNextPage();
}

static void Demo_SetupProfile(void)
{
    g_demo_profile *= -1;  // now >0: profile for real

    g_demo_soundToggle = ud.config.SoundToggle;
    ud.config.SoundToggle = 0;  // restored by Demo_FinishProfile()

    Bmemset(&g_prof, 0, sizeof(g_prof));

    g_prof.starthiticks = timerGetFractionalTicks();
}

static void Demo_FinishProfile(void)
{
    if (Demo_IsProfiling())
    {
        int32_t dn=g_whichDemo-1;
        int32_t nt=g_prof.numtics, nf=g_prof.numframes;
        double gms=g_prof.totalgamems;
        double dms1=g_prof.totalroomsdrawms, dms2=g_prof.totalrestdrawms;

        ud.config.SoundToggle = g_demo_soundToggle;

        if (nt > 0)
        {
            LOG_F(INFO, "== demo %d: %d gametics", dn, nt);
            LOG_F(INFO, "== demo %d game times: %.03f ms (%.03f us/gametic)",
                       dn, gms, (gms*1000.0)/nt);
        }

        if (nf > 0)
        {
            LOG_F(INFO, "== demo %d: %d frames (%d frames/gametic)", dn, nf, g_demo_profile-1);
            LOG_F(INFO, "== demo %d drawrooms times: %.03f s (%.03f ms/frame)",
                       dn, dms1/1000.0, dms1/nf);
            LOG_F(INFO, "== demo %d drawrest times: %.03f s (%.03f ms/frame)",
                       dn, dms2/1000.0, dms2/nf);
        }

        {
            double totalprofms = gms+dms1+dms2;
            double totalms = timerGetFractionalTicks()-g_prof.starthiticks;
            if (totalprofms != 0)
                LOG_F(INFO, "== demo %d: non-profiled time overhead: %.02f %%",
                           dn, 100.0*totalms/totalprofms - 100.0);
        }
    }

    g_demo_profile = 0;
    g_demo_stopProfile = 0;
}
////////////////////

int32_t G_PlaybackDemo(void)
{
    int32_t bigi, j, initsyncofs = 0, lastsyncofs = 0, lastsynctic = 0, lastsyncclock = 0;
    int32_t foundemo = 0, corruptcode, outofsync=0;
    static int32_t in_menu = 0;
    //    static int32_t tmpdifftime=0;

    Demo_SetAllClocks(0);

    if (ready2send)
        return 0;

    if (!g_demo_playFirstFlag)
        g_demo_profile = 0;

RECHECK:
    if (g_demo_playFirstFlag)
        g_demo_playFirstFlag = 0;
    else if (g_demo_exitAfter)
        G_GameExit();

#if KRANDDEBUG
    if (foundemo)
        krd_print("krandplay.log");
#endif

    in_menu = g_player[myconnectindex].ps->gm&MODE_MENU;

    pub = NUMPAGES;
    pus = NUMPAGES;

    renderFlushPerms();

    if (!g_netServer && ud.multimode < 2)
        foundemo = G_OpenDemoRead(g_whichDemo);

    if (foundemo == 0)
    {
        ud.recstat = 0;
        g_player[myconnectindex].ps->gm &= ~MODE_DEMO;

        if (g_whichDemo > 1)
        {
            g_whichDemo = 1;
            goto RECHECK;
        }

        fadepal(0,0,0, 0,252,28);
        P_SetGamePalette(g_player[myconnectindex].ps, BASEPAL, 1);    // JBF 20040308
        G_DrawBackground();
        M_DisplayMenus();
        videoNextPage();
        fadepal(0,0,0, 252,0,-28);
        ud.reccnt = 0;
    }
    else
    {
        ud.recstat = 2;

        g_whichDemo++;
        if (g_whichDemo == MAXDEMOS)
            g_whichDemo = 1;

        g_player[myconnectindex].ps->gm &= ~MODE_GAME;
        g_player[myconnectindex].ps->gm |= MODE_DEMO;

        lastsyncofs = ktell(g_demo_recFilePtr);
        initsyncofs = lastsyncofs;
        lastsynctic = g_demo_cnt;
        lastsyncclock = (int32_t) totalclock;
        outofsync = 0;
#if KRANDDEBUG
        krd_enable(2);
#endif
        if (g_demo_profile < 0)
        {
            Demo_SetupProfile();
        }
    }

    if (foundemo == 0 || in_menu || I_CheckAllInput() || numplayers > 1)
    {
        FX_StopAllSounds();
        S_ClearSoundLocks();
        Menu_Open(myconnectindex);
    }

    ready2send = 0;
    bigi = 0;

    I_ClearAllInput();

    if (foundemo)
    {
        int const mapidx = (ud.volume_number * MAXLEVELS) + ud.level_number;
        Bassert((unsigned)mapidx < ARRAY_SIZE(g_mapInfo));
        auto &m = g_mapInfo[mapidx];

        if (G_HaveUserMap())
            OSD_Printf(OSDTEXT_YELLOW "User Map: %s\n", boardfilename);
        else if (FURY)
            OSD_Printf(OSDTEXT_YELLOW "Entering: %s\n", m.name);
        else
            OSD_Printf(OSDTEXT_YELLOW "E%dL%d: %s\n", ud.volume_number + 1, ud.level_number + 1, m.name);
    }

    //    OSD_Printf("ticcnt=%d, total=%d\n", g_demo_cnt, g_demo_totalCnt);
    while (g_demo_cnt < g_demo_totalCnt || foundemo==0)
    {
        // Main loop here. It also runs when there's no demo to show,
        // so maybe a better name for this function would be
        // G_MainLoopWhenNotInGame()?

        // Demo requested from the OSD, its name is in g_firstDemoFile[]
        if (g_demo_playFirstFlag)
        {
            g_demo_playFirstFlag = 0;
            g_whichDemo = 1;  // force g_firstDemoFile[]
            g_demo_paused = 0;
            goto nextdemo_nomenu;
        }

        if (foundemo && (!g_demo_paused || g_demo_goalCnt))
        {
            if (g_demo_goalCnt>0 && g_demo_goalCnt < g_demo_cnt)
            {
                // initialize rewind

                int32_t menu = g_player[myconnectindex].ps->gm&MODE_MENU;

                if (g_demo_goalCnt > lastsynctic)
                {
                    // we can use a previous diff
                    if (Demo_UpdateState(0)==0)
                    {
                        g_demo_cnt = lastsynctic;
                        klseek(g_demo_recFilePtr, lastsyncofs, SEEK_SET);
                        ud.reccnt = 0;

                        Demo_SetAllClocks(lastsyncclock);
                    }
                    else CORRUPT(-1);
                }
                else
                {
                    // update to initial state
                    if (Demo_UpdateState(1) == 0)
                    {
                        klseek(g_demo_recFilePtr, initsyncofs, SEEK_SET);
                        g_levelTextTime = 0;

                        g_demo_cnt = 1;
                        ud.reccnt = 0;

                        //                        ud.god = ud.cashman = ud.eog = ud.showallmap = 0;
                        //                        ud.noclip = ud.scrollmode = ud.overhead_on = ud.pause_on = 0;

                        Demo_SetAllClocks(0);
                    }
                    else CORRUPT(0);
                }

                Demo_RestoreModes(menu);
            }

            if (g_demo_stopProfile)
                Demo_FinishProfile();

            while (totalclock >= (lockclock+TICSPERFRAME)
                //                   || (ud.reccnt > REALGAMETICSPERSEC*2 && ud.pause_on)
                || (g_demo_goalCnt>0 && g_demo_cnt<g_demo_goalCnt))
            {
                if (ud.reccnt<=0)
                {
                    // Record count reached zero (or <0, corrupted), need
                    // reading another chunk.

                    char tmpbuf[4];

                    if (ud.reccnt<0)
                    {
                        LOG_F(ERROR, "G_PlaybackDemo: ud.reccnt<0!");
                        CORRUPT(1);
                    }

                    bigi = 0;
                    //reread:
                    if (kread(g_demo_recFilePtr, tmpbuf, 4) != 4)
                        CORRUPT(2);

                    if (Bmemcmp(tmpbuf, "sYnC", 4)==0)
                    {
                        int32_t err = Demo_ReadSync(3);
                        if (err)
                            CORRUPT(err);
                    }

                    else if (demo_hasdiffs && Bmemcmp(tmpbuf, "dIfF", 4)==0)
                    {
                        int32_t k = sv_readdiff(g_demo_recFilePtr);

                        if (k)
                        {
                            LOG_F(ERROR, "sv_readdiff() returned %d.", k);
                            CORRUPT(6);
                        }
                        else
                        {
                            lastsyncofs = ktell(g_demo_recFilePtr);
                            lastsynctic = g_demo_cnt;
                            lastsyncclock = (int32_t) totalclock;

                            if (kread(g_demo_recFilePtr, tmpbuf, 4) != 4)
                                CORRUPT(7);
                            if (Bmemcmp(tmpbuf, "sYnC", 4))
                                CORRUPT(8);

                            {
                                int32_t err = Demo_ReadSync(9);
                                if (err)
                                    CORRUPT(err);
                            }

                            if ((g_demo_goalCnt==0 && demoplay_diffs) ||
                                (g_demo_goalCnt>0 && ud.reccnt/ud.multimode >= g_demo_goalCnt-g_demo_cnt))
                            {
                                Demo_UpdateState(0);
                            }
                        }
                    }
                    else if (Bmemcmp(tmpbuf, "EnD!", 4)==0)
                        goto nextdemo;
                    else CORRUPT(12);

                    if (0)
                    {
corrupt:
                        LOG_F(ERROR, "Demo #%d is corrupt (code %d).", g_whichDemo-1, corruptcode);
nextdemo:
                        Menu_Open(myconnectindex);
nextdemo_nomenu:
                        foundemo = 0;
                        ud.reccnt = 0;
                        kclose(g_demo_recFilePtr); g_demo_recFilePtr = buildvfs_kfd_invalid;

                        if (g_demo_goalCnt>0)
                            g_demo_goalCnt=0;

                        if (Demo_IsProfiling())  // don't reset g_demo_profile if it's < 0
                            Demo_FinishProfile();
                        goto RECHECK;
                    }
                }

                if (demo_hasseeds)
                    outofsync = ((uint8_t)(randomseed>>24) != g_demo_seedbuf[bigi]);

                for (TRAVERSE_CONNECT(j))
                {
                    Bmemcpy(&inputfifo[0][j], &recsync[bigi], sizeof(input_t));
                    bigi++;
                    ud.reccnt--;
                }

                g_demo_cnt++;

                if (Demo_IsProfiling())
                {
                    double t = timerGetFractionalTicks();
                    G_DoMoveThings();
                    Demo_GToc(t);
                }
                else if (!g_demo_paused)
                {
                    // assumption that ud.multimode doesn't change in a demo may not be true
                    // sometime in the future                    v v v v v v v v v
                    if (g_demo_goalCnt==0 || !demo_hasdiffs || ud.reccnt/ud.multimode>=g_demo_goalCnt-g_demo_cnt)
                    {
                        G_DoMoveThings();  // increases lockclock by TICSPERFRAME
                    }
                    else
                    {
                        lockclock += TICSPERFRAME;
                    }
                }
                else
                {
                    int32_t k = ud.config.SoundToggle;
                    ud.config.SoundToggle = 0;
                    G_DoMoveThings();
                    ud.config.SoundToggle = k;
                }

                ototalclock += TICSPERFRAME;

                if (g_demo_goalCnt > 0)
                {
                    // if fast-forwarding, we must update totalclock
                    totalclock += TICSPERFRAME;

//                    OSD_Printf("t:%d, l+T:%d; cnt:%d, goal:%d%s", totalclock, (lockclock+TICSPERFRAME),
//                               g_demo_cnt, g_demo_goalCnt, g_demo_cnt>=g_demo_goalCnt?" ":"\n");
                    if (g_demo_cnt>=g_demo_goalCnt)
                        g_demo_goalCnt = 0;
                }
            }
        }
        else if (foundemo && g_demo_paused)
            totalclock = lockclock;

        if (Demo_IsProfiling())
            totalclock += TICSPERFRAME;

        if (engineFPSLimit((g_player[myconnectindex].ps->gm & MODE_MENU) == MODE_MENU))
        {
            G_HandleLocalKeys();

            if (foundemo == 0)
            {
                G_DrawBackground();
            }
            else
            {
                // NOTE: currently, no key/mouse events will be seen while
                // demo-profiling because we need 'totalclock' for ourselves.
                // And handleevents() -> sampletimer() would mess that up.

                // Render one frame (potentially many if profiling)
                if (Demo_IsProfiling())
                {
                    int32_t i, num = g_demo_profile-1;

                    Bassert(totalclock-ototalclock==4);

                    for (i=0; i<num; i++)
                    {
                        double t1 = timerGetFractionalTicks(), t2;

                        //                    initprintf("t=%d, o=%d, t-o = %d\n", totalclock,
                        //                               ototalclock, totalclock-ototalclock);

                                            // NOTE: G_DrawRooms() calculates smoothratio inside and
                                            // ignores the function argument, so we set totalclock
                                            // accordingly.
                        j = (i<<16)/num;
                        totalclock = ototalclock + (j>>16);

                        G_DrawRooms(screenpeek, j);

                        t2 = timerGetFractionalTicks();

                        G_DisplayRest(j);

                        Demo_RToc(t1, t2);
                    }

                    totalclock = ototalclock+4;

                    // draw status
                    Demo_DisplayProfStatus();

                    if (handleevents_peekkeys())
                        Demo_StopProfiling();
                }
                else
                {
                    j = calc_smoothratio(g_demo_paused ? lockclock : totalclock, ototalclock, REALGAMETICSPERSEC);
                    G_DrawRooms(screenpeek, j);
                    G_DisplayRest(j);

                }
//                    totalclocklock = totalclock;

                if (!Demo_IsProfiling() && (g_player[myconnectindex].ps->gm&MODE_MENU) == 0)
                {
                    if (demoplay_showsync && outofsync)
                        gametext_center(100, "OUT OF SYNC");

                    if (g_demo_showStats)
                    {
    #if 0
                        if (g_demo_cnt<tmpdifftime)
                            gametext_center(100, "DIFF");

                        {
                            char buf[32];
                            Bsprintf(buf, "RC:%4d  TC:%5d", ud.reccnt, g_demo_cnt);
                            gametext_center_number(100, buf);
                        }
    #endif
                        j=g_demo_cnt/REALGAMETICSPERSEC;
                        Bsprintf(buf, "%02d:%02d", j/60, j%60);
                        gametext_widenumber(18, 16, buf);

                        rotatesprite(60<<16, 16<<16, 32768, 0, SLIDEBAR, 0, 0, 2+8+16+1024, 0, 0, (xdim*95)/320, ydim-1);
                        rotatesprite(90<<16, 16<<16, 32768, 0, SLIDEBAR, 0, 0, 2+8+16+1024, (xdim*95)/320, 0, (xdim*125)/320, ydim-1);
                        rotatesprite(120<<16, 16<<16, 32768, 0, SLIDEBAR, 0, 0, 2+8+16+1024, (xdim*125)/320, 0, (xdim*155)/320, ydim-1);
                        rotatesprite(150<<16, 16<<16, 32768, 0, SLIDEBAR, 0, 0, 2+8+16+1024, (xdim*155)/320, 0, xdim-1, ydim-1);

                        j = (182<<16) - (tabledivide32_noinline((120*(g_demo_totalCnt-g_demo_cnt))<<4, g_demo_totalCnt)<<12);
                        rotatesprite_fs(j, (16<<16)+(1<<15), 32768, 0, SLIDEBAR+1, 0, 0, 2+8+16+1024);

                        j=(g_demo_totalCnt-g_demo_cnt)/REALGAMETICSPERSEC;
                        Bsprintf(buf, "-%02d:%02d%s", j/60, j%60, g_demo_paused ? "   ^15PAUSED" : "");
                        gametext_widenumber(194, 16, buf);
                    }
                }

                if ((g_netServer || ud.multimode > 1) && g_player[myconnectindex].ps->gm)
                    Net_GetPackets();

                if (g_player[myconnectindex].gotvote == 0 && voting != -1 && voting != myconnectindex)
                    gametext_center(60, "Press F1 to Accept, F2 to Decline");
            }

            if ((g_player[myconnectindex].ps->gm&MODE_MENU) && (g_player[myconnectindex].ps->gm&MODE_EOL))
            {
                Demo_FinishProfile();
                videoNextPage();
                goto RECHECK;
            }

            if ((I_EscapeTrigger()||(MOUSE_GetButtons()&M_RIGHTBUTTON)) && (g_player[myconnectindex].ps->gm&MODE_MENU) == 0 && (g_player[myconnectindex].ps->gm&MODE_TYPE) == 0)
            {
                I_EscapeTriggerClear();
                FX_StopAllSounds();
                S_ClearSoundLocks();
                Menu_Open(myconnectindex);
                Menu_Change(MENU_MAIN);
                S_MenuSound();
            }

            if (Demo_IsProfiling())
            {
                // Do nothing: sampletimer() is reached from M_DisplayMenus() ->
                // Net_GetPackets() else.
            }
            else if (g_player[myconnectindex].ps->gm&MODE_TYPE)
            {
                Net_SendMessage();

                if ((g_player[myconnectindex].ps->gm&MODE_TYPE) != MODE_TYPE)
                {
                    g_player[myconnectindex].ps->gm = 0;
                    Menu_Open(myconnectindex);
                }
            }
            else
            {
                if (ud.recstat != 2)
                    M_DisplayMenus();

                if ((g_netServer || ud.multimode > 1)  && !Menu_IsTextInput(m_currentMenu))
                {
                    ControlInfo noshareinfo;
                    CONTROL_GetInput(&noshareinfo);
                    if (BUTTON(gamefunc_SendMessage))
                    {
                        KB_FlushKeyboardQueue();
                        CONTROL_ClearButton(gamefunc_SendMessage);
                        g_player[myconnectindex].ps->gm = MODE_TYPE;
                        typebuf[0] = 0;
                    }
                }
            }

            if (!Demo_IsProfiling())
                G_PrintGameQuotes(screenpeek);

            if (ud.last_camsprite != ud.camerasprite)
                ud.last_camsprite = ud.camerasprite;

            if (VOLUMEONE)
            {
                if (ud.show_help == 0 && (g_player[myconnectindex].ps->gm&MODE_MENU) == 0)
                    rotatesprite_fs((320-50)<<16, 9<<16, 65536L, 0, BETAVERSION, 0, 0, 2+8+16+128);
            }

            videoNextPage();
        }

        // NOTE: We must prevent handleevents() and Net_GetPackets() from
        // updating totalclock when profiling (both via sampletimer()):
        if (!Demo_IsProfiling())
            gameHandleEvents();

        if (g_player[myconnectindex].ps->gm == MODE_GAME)
        {
            // user wants to play a game, quit showing demo!

            if (foundemo)
            {
#if KRANDDEBUG
                krd_print("krandplay.log");
#endif
                kclose(g_demo_recFilePtr); g_demo_recFilePtr = buildvfs_kfd_invalid;
            }

            return 0;
        }
    }

    ud.multimode = numplayers;  // fixes 2 infinite loops after watching demo
    kclose(g_demo_recFilePtr); g_demo_recFilePtr = buildvfs_kfd_invalid;

    Demo_FinishProfile();

    // if we're in the menu, try next demo immediately
    if (g_player[myconnectindex].ps->gm&MODE_MENU)
        goto RECHECK;

#if KRANDDEBUG
    if (foundemo)
        krd_print("krandplay.log");
#endif

    // finished playing a demo and not in menu:
    // return so that e.g. the title can be shown
    return 1;
}


code:
//-------------------------------------------------------------------------
/*
Copyright (C) 2010 EDuke32 developers and contributors

This file is part of EDuke32.

EDuke32 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.
*/
//-------------------------------------------------------------------------

#ifndef demo_h_
#define demo_h_

#include "compat.h"
#include "vfs.h"
#include "cache1d.h"

#define DEMOFN_FMT "edemo%03d.edm"
#define MAXDEMOS 1000

extern buildvfs_FILE g_demo_filePtr;
extern char g_firstDemoFile[BMAX_PATH];

extern int32_t demoplay_diffs;
extern int32_t demoplay_showsync;
extern int32_t demorec_diffcompress_cvar;
extern int32_t demorec_diffs_cvar;
extern int32_t demorec_difftics_cvar;
extern int32_t demorec_force_cvar;
extern int32_t demorec_seeds_cvar;
extern int32_t demorec_synccompress_cvar;
extern int32_t g_demo_cnt;
extern int32_t g_demo_goalCnt;
extern int32_t g_demo_paused;
extern buildvfs_kfd g_demo_recFilePtr;
extern int32_t g_demo_rewind;
extern int32_t g_demo_showStats;
extern int32_t g_demo_totalCnt;

int32_t G_PlaybackDemo(void);
void Demo_PrepareWarp(void);
void G_CloseDemoWrite(void);
void G_DemoRecord(void);
void G_OpenDemoWrite(void);

void Demo_PlayFirst(int32_t prof, int32_t exitafter);
void Demo_SetFirst(const char *demostr);

int32_t Demo_IsProfiling(void);

#if KRANDDEBUG
int32_t krd_print(const char *filename);
void krd_enable(int32_t which);
#endif

#endif