ufo2map.cpp

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/*
Copyright (C) 1997-2001 Id Software, Inc.

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

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., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

*/

#define VERSION "1.2.6"
#define REVISION "1"

/* valid -nolighting parameters */
#define LIGHTING_NONE           1
#define LIGHTING_DAY_ONLY       2
#define LIGHTING_NIGHT_ONLY 3

#ifdef _WIN32
#include <windows.h>
#else
#include <sys/resource.h>
#endif

#include "lighting.h"
#include "bsp.h"
#include "check/check.h"
#include "check/checkentities.h"
#include "check/checklib.h"
#include "../../shared/shared.h"
#include "ufo2map.h"
#include <SDL_main.h>

mapConfig_t config;
static char mapFilename[MAX_OSPATH];

memPool_t* com_genericPool;
memPool_t* com_fileSysPool;

char baseFilename[MAX_OSPATH];  
typedef struct usagePair_s {
    const char* flags;          
    const char* desc;           
} usagePair_t;

static const usagePair_t usageArray[] = {
    {"Usage: ufo2map <param1 <subparam1> <subparam2> <...>> <param2> <...> [map]", nullptr},
#ifdef _WIN32
    {"Even on Windows, use / slashes in the path", nullptr},
#endif
    {"\nGeneral options:",nullptr},
    {" -h --help", "print (this) help and exit"},
#ifdef _WIN32
    {" -nice <prio>","priority level [0 = HIGH, 1 = NORMAL, 2 = IDLE]"},
#else
    {" -nice <prio>","priority level [unix nice level from -20 to 19 where 19 is the lowest priority]"},
#endif
    {" -nofootstep","don't generate a footstep file"},
    {" -tracefile","generate two csv files describing the floors and walls found by the trace functions"},
    {" -debugfile (TODO)","generate a trace debug file. The client can load the file to highlight map obstructions"},
    {" -stats --statistics","print statistics and quit. may be used with -check or -fix"},
    {" -v --verbosity <int>","set verbosity. higher <int> gives more output"},
    {nullptr, "if it is required, this should be the first option"},
    {nullptr, "0 - no stdout, 1 - only check/fix messages, 2  - (compile) only mapname"},
    {nullptr, "2 - (check/fix) mapname if findings, 4 - normal output,"},
    {nullptr, "5 - extra output, 6 - dump (a lot extra from BSPing)"},
    /* Do not change the -V output, you will break compile_maps.bat */
    {" -V --version","return Version and Revision level"},
    {" -material","generate a material (.mat) file, do not proceed to compilation"},
    {"\nLighting options:", nullptr},
    {" -extra","extra light samples"},
    {" -nolighting TYPE","don't perform the lighting calculations, where TYPE is one of day, night, all"},
    {nullptr, "default is all"},
    {" -quant","lightquant - lightmap resolution downscale (e.g. 4 = 1 << 4) (values between 1 and 6)"},
    {" -scale","global light scale factor"},
    {" -saturation","saturation factor (e.g. 1.5 - default is 1.0)"},
    {" -contrast","contrast factor (e.g. 1.05, default is 1.0)"},
    {" -t --threads","thread amount"},
    {"\nBinary space partitioning (BSPing) options:", nullptr},
    {" -block <xl> <yl>",""},
    {" -blocks <xl> <yl> <xh> <yh>",""},
    {" -subdivide","subdivide brushes for better light effects (but higher polycount)"},
    {" -surface","surface light scaling (float value)"},
    {" -entity","entity light scaling (float value)"},
    {" -fulldetail","don't treat details (and trans surfaces) as details"},
    {" -info","print bsp file info"},
    {" -micro <float>","warn if a brush has a volume lower than the specified float."},
    {nullptr, "brushes are tested after CSG."},
    {" -nobackclip","draw downward pointing faces. (so actors cannot see up through floors"},
    {nullptr, "in first person view). default is to set SURF_NODRAW to downard faces."},
    {" -nocsg",""},
    {" -gamedir", "Add another game dir to the search directories"},
    {" -nodetail","skip detail brushes"},
    {" -nomerge","skip node face merging"},
    {" -noprune","don't prune (or cut) nodes"},
    {" -noshare",""},
    {" -notjunc",""},
    {" -nowater","skip water brushes in compilation"},
    {" -noweld",""},
    {" -onlyents","modify existing bsp file with entities from map file"},
    {" -exportlightmaps","write lightmaps into tga images"},
    {" -verboseentities","also be verbose about submodels (entities)"},
    {"\nMapping options:", nullptr},
    {"\n These options operate on map file only. No bsp file is created.", nullptr},
    {" Output prefixed by an asterisk (*) indicates operations that would change the map file.", nullptr},
    {" -check","check source map, only print information."},
    {" -fix","same subparameters as -check, changes the source map file."},
    {" \n subparameters for -check and -fix", nullptr},
    {"    all","performs all checks and fixes. This is the default."},
    {"    bru brushes","includes 'lvl tex mfc mbr'. Performs all checks and fixes associated with brushes."},
    {"    ent entities","performs all checks and fixes associated with entities."},
    {"    con contained","checks for brushes contained entirely within other brushes. includes coincident duplicates."},
    {"    isc intersection","report intersection between optimisable brushes from worldspawn and func_group entities"},
    {nullptr, "this is not included in all or bru as it is not always a bad thing"},
    {"    mbr microbrush <float> ","test for brushes smaller than <float> unit^3. this is done without the csg"},
    {nullptr, "step, unlike the bsp -micro option. default 1 unit^3."},
    {"    lvl levelflags","if no levelflags for a brush or entity are set, all of them are set"},
    {"    flv filllevelflags","ensure set levelflag bits are uninterrupted"},
    {"    ndr nodraws","assigns SURF_NODRAW to hidden faces"},
    {"    tex textures","warns when no texture or error texture is assigned."},
    {nullptr, "ensures special textures and content/surface flags are consistent."},
    {"    mfc mixedfacecontents","ensures the contentflags are the same on each face of each brush."},
    {"    zft zfighting","intersecting brushes with a common face: prevent textures shimmering together"},

    {nullptr, nullptr}
};

static void Usage (void)
{
    const usagePair_t* v;
    int maxFlagsLen = 0;

    /* run through to find the length of the longest
     * flags string */
    for (v = usageArray; v->flags || v->desc; v++)
        if (v->flags && v->desc) {
            const int len = strlen(v->flags);
            maxFlagsLen = len > maxFlagsLen ? len : maxFlagsLen;
        }

    for (v = usageArray; v->flags || v->desc; v++) {
        if (v->flags && v->desc)
            Com_Printf("%-*s: %s\n", maxFlagsLen, v->flags, v->desc);
        else if (v->desc)
            Com_Printf("%*s  %s\n", maxFlagsLen, "", v->desc);
        else /* must be v->flags only, a full line not describing a flag */
            Com_Printf("%s\n",v->flags);
    }
}

void Com_Printf (const char* format, ...)
{
    char out_buffer[4096];
    va_list argptr;

    va_start(argptr, format);
    Q_vsnprintf(out_buffer, sizeof(out_buffer), format, argptr);
    va_end(argptr);

    printf("%s", out_buffer);
}

bool AbortPrint (const verbosityLevel_t msgVerbLevel)
{
    return (msgVerbLevel > config.verbosity);
}

void Verb_Printf (const verbosityLevel_t msgVerbLevel, const char* format, ...)
{
    if (AbortPrint(msgVerbLevel))
        return;

    char out_buffer[4096];
    va_list argptr;

    va_start(argptr, format);
    Q_vsnprintf(out_buffer, sizeof(out_buffer), format, argptr);
    va_end(argptr);

    printf("%s", out_buffer);
}

static void U2M_Parameter (int argc, char** argv)
{
    int i;

    for (i = 1; i < argc; i++) {
        if (Q_streq(argv[i], "-v") || Q_streq(argv[i], "-verbosity")) {
            /* arg to -v should be a single digit. if it is not a number
             * atoi will return 0, and no warning will be given. so check that
             * it looks like the arg for -v first */
            if (strlen(argv[i + 1]) == 1)
                config.verbosity = (verbosityLevel_t)atoi(argv[++i]);
            Verb_Printf(VERB_LESS, "verbosity = %i\n", config.verbosity);
        } else if (Q_streq(argv[i], "-noweld")) {
            /* make every point unique */
            Verb_Printf(VERB_LESS, "noweld = true\n");
            config.noweld = true;
        } else if (Q_streq(argv[i], "--statistics") || Q_streq(argv[i], "-stats")) {
            Verb_Printf(VERB_LESS, "statistics mode\n");
            config.stats = true;
            config.performMapCheck = true;
        } else if (Q_streq(argv[i], "-check") || Q_streq(argv[i], "-fix")) {
            /* check for subparameters terminate loop before last arg (path) or
             * when we hit a param (as opposed to a subparam).
             * full parameters are prefixed with "-". */
            const int iInitial = i;

            if (Q_streq(argv[i], "-check")) {
                Verb_Printf(VERB_LESS, "check = true\n");
                config.performMapCheck = true;
            }
            if (Q_streq(argv[i], "-fix")) {
                Verb_Printf(VERB_LESS, "fix = true\n");
                config.fixMap = true;
            }
            while (++i < (argc - 1) && argv[i][0] != '-') {
                if (Q_streq(argv[i], "entities") || Q_streq(argv[i], "ent")) {
                    Verb_Printf(VERB_LESS, "  %s entities\n", config.fixMap ? "fixing" : "checking");
                    config.chkEntities = true;
                } else if (Q_streq(argv[i], "brushes") || Q_streq(argv[i], "bru")) {
                    Verb_Printf(VERB_LESS, "  %s brushes\n", config.fixMap ? "fixing" : "checking");
                    config.chkBrushes = true;
                } else if (Q_streq(argv[i], "contained") || Q_streq(argv[i], "con")) {
                    Verb_Printf(VERB_LESS, "  %s contained brushes\n", config.fixMap ? "fixing" : "checking");
                    config.chkContained = true;
                } else if (Q_streq(argv[i], "filllevelflags") || Q_streq(argv[i], "flv")) {
                    Verb_Printf(VERB_LESS, "  %s filllevelflags\n", config.fixMap ? "fixing" : "checking");
                    config.chkFillLevelFlags = true;
                } else if (Q_streq(argv[i], "levelflags") || Q_streq(argv[i], "lvl")) {
                    Verb_Printf(VERB_LESS, "  %s levelflags\n", config.fixMap ? "fixing" : "checking");
                    config.chkLevelFlags = true;
                } else if (Q_streq(argv[i], "textures") || Q_streq(argv[i], "tex")) {
                    Verb_Printf(VERB_LESS, "  %s textures\n", config.fixMap ? "fixing" : "checking");
                    config.chkTextures = true;
                } else if (Q_streq(argv[i], "nodraws") || Q_streq(argv[i], "ndr")) {
                    Verb_Printf(VERB_LESS, "  %s nodraws\n", config.fixMap ? "fixing" : "checking");
                    config.chkNodraws = true;
                } else if (Q_streq(argv[i], "intersection") || Q_streq(argv[i], "isc")) {
                    Verb_Printf(VERB_LESS, "  %s intersection\n", config.fixMap ? "fixing" : "checking");
                    config.chkIntersection = true;
                } else if (Q_streq(argv[i], "mixedfacecontents") || Q_streq(argv[i], "mfc")) {
                    Verb_Printf(VERB_LESS, "  %s mixedfacecontents\n", config.fixMap ? "fixing" : "checking");
                    config.chkMixedFaceContents = true;
                } else if (Q_streq(argv[i], "microbrush") || Q_streq(argv[i], "mbr")) {
                    config.chkMMicro = true;
                    if (atof(argv[i + 1]) > 0.0001) {
                        config.mapMicrovol = atof(argv[i + 1]);
                        i++;
                    }
                    Verb_Printf(VERB_LESS, "  checking map for microbrushes smaller than %f unit^3\n", config.mapMicrovol);
                } else if (Q_streq(argv[i], "zfighting") || Q_streq(argv[i], "zft")) {
                    Verb_Printf(VERB_LESS, "  %s for z-fighting\n", config.fixMap ? "fixing" : "checking");
                    config.chkZFight = true;
                } else if (Q_streq(argv[i], "all")) {
                    Verb_Printf(VERB_LESS, "  %s all (entites brushes)\n", config.fixMap ? "fixing" : "checking");
                    config.chkAll = true;
                } else {
                    Verb_Printf(VERB_LESS, "  WARNING: %s subparameter not understood:%s  try --help for more info\n", config.fixMap ? "fix" : "check", argv[i]);
                }
            }
            i--;
            /* if no subparams set, assume all */
            if (i == iInitial) {
                Verb_Printf(VERB_LESS, "  no %s subparameters set, assuming all\n", config.fixMap ? "fix" : "check");
                config.chkAll = true;
            }
        } else if (Q_streq(argv[i], "-h") || Q_streq(argv[i], "--help")) {
            Usage();
            exit(0);
        } else if (Q_streq(argv[i], "-t") || Q_streq(argv[i], "-threads")) {
            threadstate.numthreads = atoi(argv[++i]);
            Verb_Printf(VERB_LESS, "threads: #%i\n", threadstate.numthreads);
        } else if (Q_streq(argv[i], "-info")) {
            config.info = true;
        } else if (Q_streq(argv[i], "-nocsg")) {
            Verb_Printf(VERB_LESS, "nocsg = true\n");
            config.nocsg = true;
        } else if (Q_streq(argv[i], "-gamedir")) {
            Q_strncpyz(config.gamedir, argv[i + 1], sizeof(config.gamedir));
            // just in case, convert any OS-path seperators to UFO-path separaters
            FS_NormPath(config.gamedir);
            Verb_Printf(VERB_LESS, "additional gamedir = %s\n", config.gamedir);
            i++;
        } else if (Q_streq(argv[i], "-noshare")) {
            Verb_Printf(VERB_LESS, "noshare = true\n");
            config.noshare = true;
        } else if (Q_streq(argv[i], "-notjunc")) {
            Verb_Printf(VERB_LESS, "notjunc = true\n");
            config.notjunc = true;
        } else if (Q_streq(argv[i], "-nowater")) {
            Verb_Printf(VERB_LESS, "nowater = true\n");
            config.nowater = true;
        } else if (Q_streq(argv[i], "-nice")) {
#if defined _WIN32
            HANDLE proc = GetCurrentProcess();
            config.nice = atoi(argv[++i]);
            Verb_Printf(VERB_LESS, "nice = %i\n", config.nice);
            switch (config.nice) {
            case 0:
                SetPriorityClass(proc, HIGH_PRIORITY_CLASS);
                Verb_Printf(VERB_LESS, "Priority changed to HIGH\n");
                break;
            case 1:
                SetPriorityClass(proc, NORMAL_PRIORITY_CLASS);
                Verb_Printf(VERB_LESS, "Priority changed to NORMAL\n");
                break;
            default:
                SetPriorityClass(proc, IDLE_PRIORITY_CLASS);
                Verb_Printf(VERB_LESS, "Priority changed to IDLE\n");
                break;
            }
            CloseHandle(proc);
#else
            config.nice = atoi(argv[++i]);
            Verb_Printf(VERB_LESS, "nice = %i\n", config.nice);
            if (setpriority(PRIO_PROCESS, 0, config.nice))
                Verb_Printf(VERB_LESS, "failed to set nice level of %i\n", config.nice);
#endif
        } else if (Q_streq(argv[i], "-noprune")) {
            Verb_Printf(VERB_LESS, "noprune = true\n");
            config.noprune = true;
        } else if (Q_streq(argv[i],"-nofootstep")) {
            config.generateFootstepFile = false;
            Verb_Printf(VERB_LESS, "generateFootstepFile = false\n");
        } else if (Q_streq(argv[i],"-tracefile")) {
            config.generateTraceFile = true;
            Verb_Printf(VERB_NORMAL, "generateTraceFile = true\n");
        } else if (Q_streq(argv[i],"-debugtrace")) {
            config.generateDebugTrace = true;
            Verb_Printf(VERB_NORMAL, "generateDebugTrace = true\n");
        } else if (Q_streq(argv[i],"-material")) {
            config.generateMaterialFile = true;
            Verb_Printf(VERB_LESS, "generateMaterialFile = true\n");
        } else if (Q_streq(argv[i], "-nomerge")) {
            Verb_Printf(VERB_LESS, "nomerge = true\n");
            config.nomerge = true;
        } else if (Q_streq(argv[i], "-nosubdiv")) {
            Verb_Printf(VERB_LESS, "nosubdiv = true\n");
            config.nosubdiv = true;
        } else if (Q_streq(argv[i], "-nodetail")) {
            Verb_Printf(VERB_LESS, "nodetail = true\n");
            config.nodetail = true;
        } else if (Q_streq(argv[i], "-fulldetail")) {
            Verb_Printf(VERB_LESS, "fulldetail = true\n");
            config.fulldetail = true;
        } else if (Q_streq(argv[i], "-onlyents")) {
            Verb_Printf(VERB_LESS, "onlyents = true\n");
            config.onlyents = true;
        } else if (Q_streq(argv[i], "-exportlightmaps")) {
            Verb_Printf(VERB_LESS, "exportlightmaps = true\n");
            config.exportLightmaps = true;
        } else if (Q_streq(argv[i], "-micro")) {
            config.microvolume = atof(argv[i + 1]);
            Verb_Printf(VERB_LESS, "microvolume = %f\n", config.microvolume);
            i++;
        } else if (Q_streq(argv[i], "-verboseentities")) {
            Verb_Printf(VERB_LESS, "verboseentities = true\n");
            config.verboseentities = true;
        } else if (Q_streq(argv[i], "-subdivide")) {
            config.subdivideSize = atof(argv[i + 1]);
            Verb_Printf(VERB_LESS, "subdivide_size = %f\n", config.subdivideSize);
            i++;
        } else if (Q_streq(argv[i], "-block")) {
            config.block_xl = config.block_xh = atoi(argv[i + 1]);
            config.block_yl = config.block_yh = atoi(argv[i + 2]);
            Verb_Printf(VERB_LESS, "block: %i,%i\n", config.block_xl, config.block_yl);
            i += 2;
        } else if (Q_streq(argv[i], "-blocks")) {
            config.block_xl = atoi(argv[i + 1]);
            config.block_yl = atoi(argv[i + 2]);
            config.block_xh = atoi(argv[i + 3]);
            config.block_yh = atoi(argv[i + 4]);
            Verb_Printf(VERB_LESS, "blocks: %i,%i to %i,%i\n",
                config.block_xl, config.block_yl, config.block_xh, config.block_yh);
            i += 4;
        } else if (Q_streq(argv[i], "-nobackclip")) {
            Verb_Printf(VERB_LESS, "nobackclip = true\n");
            config.nobackclip = true;
        } else if (Q_streq(argv[i], "-extra")) {
            config.extrasamples = true;
            Verb_Printf(VERB_LESS, "extrasamples = true\n");
        } else if (Q_streq(argv[i], "-soft")) {
            config.extrasamples = true;
            config.soft = true;
            Verb_Printf(VERB_LESS, "extrasamples = true\n");
            Verb_Printf(VERB_LESS, "soft = true\n");
        } else if (Q_streq(argv[i], "-quant")) {
            config.lightquant = (byte)atoi(argv[i + 1]);
            if (config.lightquant < 1 || config.lightquant > 6) {
                config.lightquant = 4;
                Verb_Printf(VERB_LESS, "lightquant must be between 1 and 6\n");
            }
            i++;
        } else if (Q_streq(argv[i], "-scale")) {
            config.brightness = atof(argv[i + 1]);
            i++;
        } else if (Q_streq(argv[i], "-saturation")) {
            config.saturation = atof(argv[i + 1]);
            Verb_Printf(VERB_LESS, "saturation at %f\n", config.saturation);
            i++;
        } else if (Q_streq(argv[i], "-contrast")) {
            config.contrast = atof(argv[i + 1]);
            Verb_Printf(VERB_LESS, "contrast at %f\n", config.contrast);
            i++;
        } else if (Q_streq(argv[i], "-surface")) {
            config.surface_scale *= atof(argv[i + 1]);
            Verb_Printf(VERB_LESS, "surface light scaling at %f\n", config.surface_scale);
            i++;
        } else if (Q_streq(argv[i], "-entity")) {
            config.entity_scale *= atof(argv[i + 1]);
            Verb_Printf(VERB_LESS, "entity light scaling at %f\n", config.entity_scale);
            i++;
        } else if (Q_streq(argv[i], "-nolighting")) {
            if (argc > i + 1) {
                if (Q_streq(argv[i + 1], "day")) {
                    Verb_Printf(VERB_LESS, "nolighting = day\n");
                    config.nolighting = LIGHTING_NIGHT_ONLY;
                    i++;
                } else if (Q_streq(argv[i + 1], "night")) {
                    Verb_Printf(VERB_LESS, "nolighting = night\n");
                    config.nolighting = LIGHTING_DAY_ONLY;
                    i++;
                } else {
                    Verb_Printf(VERB_LESS, "nolighting = none\n");
                    config.nolighting = LIGHTING_NONE;
                }
            } else {
                Sys_Error("invalid parameter count");
            }
        } else if (Q_streq(argv[i], "-V") || Q_streq(argv[i], "--version")) {
            Verb_Printf(VERB_LESS, "version:" VERSION " revision:" REVISION "\n");
            exit(0);
        } else if (i < (argc - 1)) {
            /* Last param is the map path, every other param should have been caught by now. */
            Verb_Printf(VERB_LESS, "*** parameter not understood: %s try --help for more info\n", argv[i]);
        }
    }

    if (config.fixMap && config.performMapCheck) {
        Sys_Error("do not specify both -fix and -check");
    }

    /* if any check or fix option is active then skip footsteps and materials */
    if (config.performMapCheck || config.fixMap) {
        config.generateFootstepFile = false;
        config.generateMaterialFile = false;
    }
}

static void U2M_SetDefaultConfigValues (void)
{
    config.verbosity = VERB_NORMAL;

    config.subdivideSize = 1024.0f; /* bsp subdiv */
    config.block_xl = -8;
    config.block_xh = 7;
    config.block_yl = -8;
    config.block_yh = 7;
    config.microvolume = 1.0f;
    config.mapMicrovol = 1.0f; /* this value is up for debate blondandy */

    /* lightmap night values */
    VectorSet(config.sun_ambient_color[LIGHTMAP_NIGHT], 0.16, 0.16, 0.17);
    config.sun_intensity[LIGHTMAP_NIGHT] = 15;
    Vector2Set(config.sun_angles[LIGHTMAP_NIGHT], -80, 220);
    VectorSet(config.sun_color[LIGHTMAP_NIGHT], 0.25, 0.25, 0.35);
    ColorNormalize(config.sun_color[LIGHTMAP_NIGHT], config.sun_color[LIGHTMAP_NIGHT]);
    AngleVectors(config.sun_angles[LIGHTMAP_NIGHT], config.sun_normal[LIGHTMAP_NIGHT], nullptr, nullptr);

    /* lightmap day values */
    VectorSet(config.sun_ambient_color[LIGHTMAP_DAY], 0.26, 0.26, 0.26);
    config.sun_intensity[LIGHTMAP_DAY] = 280;
    Vector2Set(config.sun_angles[LIGHTMAP_DAY], -75, 100);
    VectorSet(config.sun_color[LIGHTMAP_DAY], 0.90, 0.75, 0.65);
    ColorNormalize(config.sun_color[LIGHTMAP_DAY], config.sun_color[LIGHTMAP_DAY]);
    AngleVectors(config.sun_angles[LIGHTMAP_DAY], config.sun_normal[LIGHTMAP_DAY], nullptr, nullptr);

    config.saturation = 1.0f;
    config.contrast = 1.0f;
    config.brightness = 1.0;
    config.lightquant = 4;
    config.surface_scale = 0.4f;
    config.entity_scale = 1.0f;

    config.generateFootstepFile = true;

    config.generateTraceFile = false;
    config.generateDebugTrace = false;
}

void PrintMapName (void)
{
    const char* mode = nullptr;

    if (config.performMapCheck) {
        mode = "[check]";
    } else if (config.fixMap) {
        mode = "[fix]";
    } else {
        mode = "[compile]";
    }
    Com_Printf("%s %s\n", mode, mapFilename);
}


int main (int argc, char** argv)
{
    char normMapFile[MAX_OSPATH];
    char bspFilename[MAX_OSPATH];
    double begin, start, end;
    long size = 0;

    OBJZERO(config);
    /* init thread state */
    OBJZERO(threadstate);

    U2M_SetDefaultConfigValues();

    U2M_Parameter(argc, argv);

    Verb_Printf(VERB_NORMAL, "---- ufo2map " VERSION " ----\n");

    if (argc < 2) {
        Usage();
        Sys_Error("At least provide 1 argument: the map filename.");
    }

    com_genericPool = Mem_CreatePool("ufo2map");
    com_fileSysPool = Mem_CreatePool("ufo2map filesys");

    Swap_Init();
    Mem_Init();

    start = time(nullptr);

    // copy the map filename
    Q_strncpyz(normMapFile, argv[argc-1], sizeof(normMapFile));
    FS_NormPath(normMapFile);
    Verb_Printf(VERB_NORMAL, "path: '%s'\n", normMapFile);

    FS_InitFilesystem(false);
    if (config.gamedir[0] != '\0') {
        FS_AddGameDirectory(config.gamedir, true);
    }
    // get the filename and remove the file extension for further use
    Com_StripExtension(normMapFile, mapFilename, sizeof(mapFilename));
    if (config.gamedir[0] != '\0'){
        /*
          in situations were you design a map, you usually want to keep these files outside the main game installation;
          so if -gamedir is used and the map-file specified starts with the gamedir, make the mapfile relative to
          gamedir so the FS-functions will find it

          Note: we have a case issue here on windows where you can differ in case between the path in --gamedir
          and the path to the map-file.
        */
        const char *p = Q_strstart(mapFilename, config.gamedir);
        if (p != NULL) {
            // yes, the file specified starts with the gamedir path
            // drop it so it becomes relative to the gamedir
            Q_strreplace(mapFilename, config.gamedir, "", mapFilename, sizeof(mapFilename));
            // Q_strreplace(mapFilename, config.gamedir, "", mapFilenameRel, sizeof(mapFilenameRel));
            // Q_strncpyz(mapFilename, mapFilenameRel, sizeof(mapFilename));
        }
    }
    // create seperate filenames for the .map and .bsp filess
    strncpy(baseFilename, mapFilename, sizeof(baseFilename) - 1);
    strncpy(bspFilename, mapFilename, sizeof(bspFilename) - 1);
    Com_DefaultExtension(mapFilename, sizeof(mapFilename), ".map");
    Com_DefaultExtension(bspFilename, sizeof(bspFilename), ".bsp");

    if (config.info) {
        LoadBSPFile(bspFilename);
        PrintBSPFileSizes();
        Mem_Shutdown();
        return 0;
    }

    Verb_Printf(VERB_NORMAL, "...map: '%s'\n", mapFilename);
    if (!(config.performMapCheck || config.fixMap))
        Verb_Printf(VERB_NORMAL, "...bsp: '%s'\n", bspFilename);

    if (config.verbosity == VERB_MAPNAME && !(config.performMapCheck || config.fixMap))
        PrintMapName();

    /* if onlyents just grab the entities and resave */
    if (config.onlyents) {
        LoadBSPFile(bspFilename);
        num_entities = 0; /* use the map source entities */

        LoadMapFile(mapFilename);
        SetModelNumbers();

        UnparseEntities();

        size = WriteBSPFile(bspFilename);
    } else if (config.exportLightmaps) {
        LoadBSPFile(bspFilename);
        ExportLightmaps(bspFilename);
    } else if (config.performMapCheck || config.fixMap) {
        LoadMapFile(mapFilename);
        /* level flags must be fixed before mixed face contents, or they swamp the
         * console with output, as levelflags are contentflags */
        if (config.chkLevelFlags || config.chkBrushes || config.chkAll)
            CheckLevelFlags();
        if (config.chkFillLevelFlags || config.chkBrushes || config.chkAll)
            CheckFillLevelFlags();
        /* this must be before mfc check, as otherwise mfc warnings are given
         * which are auto-fixed based on textures */
        if (config.chkTextures || config.chkBrushes || config.chkAll)
            CheckFlagsBasedOnTextures();
        /* mixed face contents check may remove contentflags. this should be done
         * before tex based on flags check, as tex may replace tex on the basis
         * of contentflags.*/
        if (config.chkMixedFaceContents || config.chkBrushes || config.chkAll)
            CheckMixedFaceContents();
        if (config.chkTextures || config.chkBrushes || config.chkAll)
            CheckTexturesBasedOnFlags();
        if (config.chkMMicro || config.chkBrushes || config.chkAll)
            CheckMapMicro();
        if (config.chkContained || config.chkBrushes || config.chkAll)
            Check_ContainedBrushes();
        if (config.chkBrushes || config.chkAll)
            CheckBrushes();
        if (config.chkNodraws || config.chkAll)
            CheckNodraws();
        if (config.chkZFight  || config.chkAll || config.chkBrushes)
            CheckZFighting();
        if (config.chkEntities || config.chkAll)
            CheckEntities();
        /* not included in bru or all by design */
        if (config.chkIntersection)
            Check_BrushIntersection();

        if (config.stats)
            Check_Stats();

        if (config.fixMap) {
            /* update dentdata */
            UnparseEntities();
            WriteMapFile(mapFilename);
        }

        /* the check stuff includes entitiesdef.h, which does not use mem.h.
         * this manual free is required */
        Check_Free();

        Mem_Shutdown();

        return 0;
    } else if (config.generateMaterialFile) {
        /* start from scratch */
        LoadMapFile(mapFilename);
        Mem_Shutdown();
        return 0;
    } else {
        /* start from scratch */
        LoadMapFile(mapFilename);

        CheckNodraws();
        Check_Free();

        SetModelNumbers();

        ProcessModels(bspFilename);
    }

    end = time(nullptr);
    Verb_Printf(VERB_LESS, "%5.0f seconds elapsed\n", end - start);
    begin = start;

    if (!config.exportLightmaps && !config.onlyents && config.nolighting != LIGHTING_NONE) {
        Verb_Printf(VERB_LESS, "----- Lighting ----\n");

        CalcTextureReflectivity();

        if (config.nolighting != LIGHTING_DAY_ONLY) {
            /* compile night version */
            start = time(nullptr);
            LightWorld();
            end = time(nullptr);
            Verb_Printf(VERB_LESS, "%5.0f seconds elapsed\n", end - start);
        }

        if (config.nolighting != LIGHTING_NIGHT_ONLY) {
            /* compile day version */
            config.compile_for_day = 1;
            start = time(nullptr);
            LightWorld();
            end = time(nullptr);
            Verb_Printf(VERB_LESS, "%5.0f seconds elapsed\n", end - start);
        }

        Verb_Printf(VERB_LESS, "writing %s\n", bspFilename);
        size = WriteBSPFile(bspFilename);
    } else if (!config.exportLightmaps) {
        /* build per-vertex normals for phong shading */
        BuildVertexNormals();
        size = WriteBSPFile(bspFilename);
        end = time(nullptr);
    }

    Verb_Printf(VERB_LESS, "sum: %5.0f seconds elapsed - %.1g MB (%li bytes)\n\n", end - begin, (float)size / (1024.0f * 1024.0f), size);

    Mem_Shutdown();

    return 0;
}