mapinfo.qc

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#include "mapinfo.qh"
#if defined(CSQC)
    #include <common/util.qh>
    #include <common/weapons/_all.qh>
#elif defined(MENUQC)
#elif defined(SVQC)
    #include <common/util.qh>
    #include <common/monsters/_mod.qh>
#endif
 
int autocvar_g_mapinfo_q3compat = 1;
 
#ifdef SVQC
    bool autocvar_g_mapinfo_ignore_warnings;
    #define WARN_COND (!autocvar_g_mapinfo_ignore_warnings && MapInfo_Map_bspname == mi_shortname)
#else
    #define WARN_COND false
#endif
 
vector _GametypeFlags_FromGametype(int a)
{
    if (REGISTRY_MAX(Gametypes) > 24)
        if (a >= 24)
        {
            a -= 24;
            if (REGISTRY_MAX(Gametypes) > 48)
                if (a >= 24)
                {
                    a -= 24;
                    return '0 0 1' * BIT(a);
                }
            return '0 1 0' * BIT(a);
        }
    return '1 0 0' * BIT(a);
}
 
// generic string stuff
 
int _MapInfo_Cache_Active;
int _MapInfo_Cache_DB_NameToIndex;
int _MapInfo_Cache_Buf_IndexToMapData;
 
void MapInfo_Cache_Destroy()
{
    if(!_MapInfo_Cache_Active)
        return;
 
    db_close(_MapInfo_Cache_DB_NameToIndex);
    buf_del(_MapInfo_Cache_Buf_IndexToMapData);
    _MapInfo_Cache_Active = 0;
}
 
void MapInfo_Cache_Create()
{
    MapInfo_Cache_Destroy();
    _MapInfo_Cache_DB_NameToIndex = db_create();
    _MapInfo_Cache_Buf_IndexToMapData = buf_create();
    _MapInfo_Cache_Active = 1;
}
 
void MapInfo_Cache_Invalidate()
{
    if(!_MapInfo_Cache_Active)
        return;
 
    MapInfo_Cache_Create();
}
 
void MapInfo_Cache_Store()
{
    float i;
    string s;
    if(!_MapInfo_Cache_Active)
        return;
 
    s = db_get(_MapInfo_Cache_DB_NameToIndex, MapInfo_Map_bspname);
    if(s == "")
    {
        i = buf_getsize(_MapInfo_Cache_Buf_IndexToMapData);
        db_put(_MapInfo_Cache_DB_NameToIndex, MapInfo_Map_bspname, ftos(i));
    }
    else
        i = stof(s);
 
    // now store all the stuff
    bufstr_set(_MapInfo_Cache_Buf_IndexToMapData,   i, MapInfo_Map_bspname);
    bufstr_set(_MapInfo_Cache_Buf_IndexToMapData, ++i, MapInfo_Map_title);
    bufstr_set(_MapInfo_Cache_Buf_IndexToMapData, ++i, MapInfo_Map_titlestring);
    bufstr_set(_MapInfo_Cache_Buf_IndexToMapData, ++i, MapInfo_Map_description);
    bufstr_set(_MapInfo_Cache_Buf_IndexToMapData, ++i, MapInfo_Map_author);
    bufstr_set(_MapInfo_Cache_Buf_IndexToMapData, ++i, vtos(MapInfo_Map_supportedGametypes));
    bufstr_set(_MapInfo_Cache_Buf_IndexToMapData, ++i, ftos(MapInfo_Map_supportedFeatures));
    bufstr_set(_MapInfo_Cache_Buf_IndexToMapData, ++i, ftos(MapInfo_Map_flags));
}
 
float MapInfo_Cache_Retrieve(string map)
{
    float i;
    string s;
    if(!_MapInfo_Cache_Active)
        return 0;
 
    s = db_get(_MapInfo_Cache_DB_NameToIndex, map);
    if(s == "")
        return 0;
    i = stof(s);
 
    // now retrieve all the stuff
    MapInfo_Map_bspname = bufstr_get(_MapInfo_Cache_Buf_IndexToMapData, i);
    MapInfo_Map_title = bufstr_get(_MapInfo_Cache_Buf_IndexToMapData, ++i);
    MapInfo_Map_titlestring = bufstr_get(_MapInfo_Cache_Buf_IndexToMapData, ++i);
    MapInfo_Map_description = bufstr_get(_MapInfo_Cache_Buf_IndexToMapData, ++i);
    MapInfo_Map_author = bufstr_get(_MapInfo_Cache_Buf_IndexToMapData, ++i);
    MapInfo_Map_supportedGametypes = stov(bufstr_get(_MapInfo_Cache_Buf_IndexToMapData, ++i));
    MapInfo_Map_supportedFeatures = stof(bufstr_get(_MapInfo_Cache_Buf_IndexToMapData, ++i));
    MapInfo_Map_flags = stof(bufstr_get(_MapInfo_Cache_Buf_IndexToMapData, ++i));
 
    return 1;
}
 
// GLOB HANDLING (for all BSP files)
float _MapInfo_globopen;
float _MapInfo_globcount;
float _MapInfo_globhandle;
string _MapInfo_GlobItem(float i)
{
    string s;
    if(!_MapInfo_globopen)
        return string_null;
    s = search_getfilename(_MapInfo_globhandle, i);
    return substring(s, 5, strlen(s) - 9); // without maps/ and .bsp
}
 
void MapInfo_Enumerate()
{
    if(_MapInfo_globopen)
    {
        search_end(_MapInfo_globhandle);
        _MapInfo_globopen = 0;
    }
    MapInfo_Cache_Invalidate();
    _MapInfo_globhandle = search_begin("maps/*.bsp", true, true);
    if(_MapInfo_globhandle >= 0)
    {
        _MapInfo_globcount = search_getsize(_MapInfo_globhandle);
        _MapInfo_globopen = 1;
    }
    else
        _MapInfo_globcount = 0;
}
 
// filter the info by gametype mask (updates MapInfo_count)
//
float _MapInfo_filtered;
float _MapInfo_filtered_allocated;
float MapInfo_FilterList_Lookup(float i)
{
    return stof(bufstr_get(_MapInfo_filtered, i));
}
 
void _MapInfo_FilterList_swap(float i, float j, entity pass)
{
    string h = bufstr_get(_MapInfo_filtered, i);
    bufstr_set(_MapInfo_filtered, i, bufstr_get(_MapInfo_filtered, j));
    bufstr_set(_MapInfo_filtered, j, h);
}
 
float _MapInfo_FilterList_cmp(float i, float j, entity pass)
{
    string a, b;
    a = _MapInfo_GlobItem(stof(bufstr_get(_MapInfo_filtered, i)));
    b = _MapInfo_GlobItem(stof(bufstr_get(_MapInfo_filtered, j)));
    return strcasecmp(a, b);
}
 
float MapInfo_FilterGametype(Gametype pGametype, int pFeatures, int pFlagsRequired, int pFlagsForbidden, bool pAbortOnGenerate)
{
    return _MapInfo_FilterGametype(pGametype.gametype_flags, pFeatures, pFlagsRequired, pFlagsForbidden, pAbortOnGenerate);
}
float _MapInfo_FilterGametype(vector pGametype, int pFeatures, int pFlagsRequired, int pFlagsForbidden, bool pAbortOnGenerate)
{
    float i, j;
    if (!_MapInfo_filtered_allocated)
    {
        _MapInfo_filtered_allocated = 1;
        _MapInfo_filtered = buf_create();
    }
    MapInfo_count = 0;
    for(i = 0, j = -1; i < _MapInfo_globcount; ++i)
    {
        if(MapInfo_Get_ByName(_MapInfo_GlobItem(i), 1, NULL) == 2) // if we generated one... BAIL OUT and let the caller continue in the next frame.
            if(pAbortOnGenerate)
            {
                LOG_TRACE("Autogenerated a .mapinfo, doing the rest later.");
                MapInfo_progress = i / _MapInfo_globcount;
                return 0;
            }
        if(MapInfo_Map_supportedGametypes & pGametype)
        if((MapInfo_Map_supportedFeatures & pFeatures) == pFeatures)
        if((MapInfo_Map_flags & pFlagsForbidden) == 0)
        if((MapInfo_Map_flags & pFlagsRequired) == pFlagsRequired)
            bufstr_set(_MapInfo_filtered, ++j, ftos(i));
    }
    MapInfo_count = j + 1;
    MapInfo_ClearTemps();
 
    // sometimes the glob isn't sorted nicely, so fix it here...
    heapsort(MapInfo_count, _MapInfo_FilterList_swap, _MapInfo_FilterList_cmp, NULL);
 
    return 1;
}
void MapInfo_FilterString(string sf)
{
    // this function further filters _MapInfo_filtered, which is prepared by MapInfo_FilterGametype by string
    float i, j;
    string title;
 
    for(i = 0, j = -1; i < MapInfo_count; ++i)
    {
        if (MapInfo_Get_ByID(i))
        {
            // prepare for keyword filter
            if (MapInfo_Map_title && strstrofs(MapInfo_Map_title, "<TITLE>", 0) == -1)
                title = MapInfo_Map_title;
            else
                title = MapInfo_Map_bspname;
            // keyword filter
            if((strstrofs(strtolower(title), strtolower(sf), 0)) >= 0)
                bufstr_set(_MapInfo_filtered, ++j, bufstr_get(_MapInfo_filtered, i));
        }
    }
    MapInfo_count = j + 1;
    MapInfo_ClearTemps();
 
    // sometimes the glob isn't sorted nicely, so fix it here...
    heapsort(MapInfo_count, _MapInfo_FilterList_swap, _MapInfo_FilterList_cmp, NULL);
}
 
void MapInfo_Filter_Free()
{
    if(_MapInfo_filtered_allocated)
    {
        buf_del(_MapInfo_filtered);
        _MapInfo_filtered_allocated = 0;
    }
}
 
// load info about the i-th map into the MapInfo_Map_* globals
string MapInfo_BSPName_ByID(float i)
{
    return _MapInfo_GlobItem(MapInfo_FilterList_Lookup(i));
}
 
string unquote(string s)
{
    float l = strlen(s);
    for(float i = 0; i < l; ++i)
    {
        string ch = substring(s, i, 1);
        if((ch != " ") && (ch != "\""))
        {
            for(float j = l - i - 1; j > 0; --j)
            {
                ch = substring(s, i+j, 1);
                if(ch != " ") if(ch != "\"")
                    return substring(s, i, j+1);
            }
            return substring(s, i, 1);
        }
    }
    return "";
}
 
bool MapInfo_Get_ByID(int i)
{
    return MapInfo_Get_ByName(MapInfo_BSPName_ByID(i), 0, NULL) ? true : false;
}
 
string _MapInfo_Map_worldspawn_music;
 
float _MapInfo_Generate(string pFilename) // 0: failure, 1: ok ent, 2: ok bsp
{
    string fn;
    float fh;
    string s, k, v;
    vector o;
    float i;
    float inWorldspawn;
    float r;
    float diameter, spawnpoints;
    float spawnplaces;
    bool is_q3df_map = false;
    vector mapMins, mapMaxs;
 
    if(autocvar_g_mapinfo_q3compat >= 2) // generate mapinfo using arena data
    {
        // try for .arena or .defi files, as they may have more accurate information
        // supporting .arena AND .defi for the same map
        bool success = false;
        fh = -1;
        fn = _MapInfo_FindArenaFile(pFilename, ".arena");
        if(fn != "" && (fh = fopen(fn, FILE_READ)) >= 0)
        {
            success = _MapInfo_ParseArena(fn, fh, pFilename, NULL, false, true);
            fclose(fh);
        }
        fn = _MapInfo_FindArenaFile(pFilename, ".defi");
        if(fn != "" && (fh = fopen(fn, FILE_READ)) >= 0)
        {
            success |= _MapInfo_ParseArena(fn, fh, pFilename, NULL, true, true);
            fclose(fh);
        }
        if (success && autocvar_g_mapinfo_q3compat == 3)
            return 3; // skip entity analysis
    }
 
    r = 1;
    fn = strcat("maps/", pFilename, ".ent");
    fh = fopen(fn, FILE_READ);
    if(fh < 0)
    {
        r = 2;
        fn = strcat("maps/", pFilename, ".bsp");
        fh = fopen(fn, FILE_READ);
    }
    if(fh < 0)
        return 0;
    LOG_INFO("Generating ", pFilename, ".mapinfo: analyzing ", fn);
 
    inWorldspawn = 2;
    spawnpoints = 0;
    spawnplaces = 0;
    _MapInfo_Map_worldspawn_music = "";
    mapMins = '0 0 0';
    mapMaxs = '0 0 0';
 
    for (;;)
    {
        if (!((s = fgets(fh))))
            break;
        if(inWorldspawn == 1)
            if(startsWith(s, "}"))
                inWorldspawn = 0;
        k = unquote(car(s));
        v = unquote(cdr(s));
        if(inWorldspawn)
        {
            if(k == "classname" && v == "worldspawn")
                inWorldspawn = 1;
            else if(k == "author")
                MapInfo_Map_author = v;
            else if(k == "_description")
                MapInfo_Map_description = v;
            else if(k == "music")
                _MapInfo_Map_worldspawn_music = v;
            else if(k == "noise")
                _MapInfo_Map_worldspawn_music = v;
            else if(k == "message" && (!MapInfo_Map_title || MapInfo_Map_title == "<TITLE>") && v != "")
                MapInfo_Map_title = v;
        }
        else
        {
            if(k == "origin")
            {
                o = stov(strcat("'", v, "'"));
                mapMins.x = min(mapMins.x, o.x);
                mapMins.y = min(mapMins.y, o.y);
                mapMins.z = min(mapMins.z, o.z);
                mapMaxs.x = max(mapMaxs.x, o.x);
                mapMaxs.y = max(mapMaxs.y, o.y);
                mapMaxs.z = max(mapMaxs.z, o.z);
            }
            else if(k == "race_place")
            {
                if(stof(v) > 0)
                    spawnplaces = 1;
            }
            else if(k == "classname")
            {
                if(v == "info_player_team1")
                    ++spawnpoints;
                else if(v == "info_player_team2")
                    ++spawnpoints;
                else if(v == "info_player_start")
                    ++spawnpoints;
                else if(v == "info_player_deathmatch")
                    ++spawnpoints;
                else if(v == "weapon_nex")
                    { }
                else if(v == "weapon_railgun")
                    { }
                else if(startsWith(v, "weapon_"))
                    MapInfo_Map_supportedFeatures |= MAPINFO_FEATURE_WEAPONS;
                else if(startsWith(v, "turret_"))
                    MapInfo_Map_supportedFeatures |= MAPINFO_FEATURE_TURRETS;
                else if(startsWith(v, "vehicle_"))
                    MapInfo_Map_supportedFeatures |= MAPINFO_FEATURE_VEHICLES;
                else if(startsWith(v, "monster_"))
                    MapInfo_Map_supportedFeatures |= MAPINFO_FEATURE_MONSTERS;
                else if(v == "target_music" || v == "trigger_music")
                    _MapInfo_Map_worldspawn_music = string_null; // don't use regular BGM
                else if(v == "target_stopTimer")
                    is_q3df_map = true; // don't support standard gametypes UNLESS we found them in .arena
                else
                    FOREACH(Gametypes, true, it.m_generate_mapinfo(it, v));
            }
        }
    }
    if(inWorldspawn)
    {
        LOG_WARN(fn, " ended still in worldspawn, BUG");
        return 0;
    }
    diameter = vlen(mapMaxs - mapMins);
 
    vector twoBaseModes = '0 0 0';
    FOREACH(Gametypes, it.m_isTwoBaseMode(), twoBaseModes |= it.gametype_flags);
    if(twoBaseModes && (twoBaseModes &= MapInfo_Map_supportedGametypes))
    {
        // we have a symmetrical map, don't add the modes without bases
    }
    else if(!is_q3df_map)
    {
        FOREACH(Gametypes, it.m_isAlwaysSupported(it, spawnpoints, diameter), MapInfo_Map_supportedGametypes |= it.gametype_flags);
    }
 
    if(MapInfo_Map_supportedGametypes & MAPINFO_TYPE_RACE.gametype_flags)
    if(!spawnplaces)
    {
        MapInfo_Map_supportedGametypes &= ~MAPINFO_TYPE_RACE.gametype_flags;
        MapInfo_Map_supportedGametypes |= MAPINFO_TYPE_CTS.gametype_flags;
    }
 
    LOG_TRACE("-> diameter ",    ftos(diameter));
    LOG_TRACE(";  spawnpoints ", ftos(spawnpoints));
    LOG_TRACE(";  modes ",       vtos(MapInfo_Map_supportedGametypes));
 
    fclose(fh);
 
    return r;
}
 
void _MapInfo_Map_Reset()
{
    MapInfo_Map_title = "<TITLE>";
    MapInfo_Map_titlestring = "<TITLE>";
    MapInfo_Map_description = "<DESCRIPTION>";
    MapInfo_Map_author = "<AUTHOR>";
    MapInfo_Map_supportedGametypes = '0 0 0';
    MapInfo_Map_supportedFeatures = 0;
    MapInfo_Map_flags = 0;
    MapInfo_Map_clientstuff = "";
    MapInfo_Map_fog = "";
    MapInfo_Map_mins = '0 0 0';
    MapInfo_Map_maxs = '0 0 0';
}
 
string _MapInfo_GetDefault(Gametype t)
{
    return t.m_legacydefaults;
}
 
void _MapInfo_Map_ApplyGametype(string s, Gametype pWantedType, Gametype pThisType, int load_default)
{
    string sa;
    MapInfo_Map_supportedGametypes |= pThisType.gametype_flags;
    if(!(pThisType.gametype_flags & pWantedType.gametype_flags))
        return;
 
    if(load_default)
        _MapInfo_Map_ApplyGametype(_MapInfo_GetDefault(pThisType), pWantedType, pThisType, false);
 
    if(!pWantedType.frags) // these modes don't use fraglimit
    {
        cvar_set("fraglimit", "0");
    }
    else
    {
        sa = car(s);
        if(sa != "")
            cvar_set("fraglimit", sa);
        s = cdr(s);
    }
 
    sa = car(s);
    if(sa != "")
        cvar_set("timelimit", sa);
    s = cdr(s);
 
    if(pWantedType.m_setTeams)
    {
        sa = car(s);
        if(sa != "")
            pWantedType.m_setTeams(sa);
        s = cdr(s);
    }
 
    // rc = timelimit timelimit_qualification laps laps_teamplay
    if(pWantedType == MAPINFO_TYPE_RACE)
    {
        cvar_set("fraglimit", "0"); // special case!
 
        sa = car(s); if(sa == "") sa = cvar_string("timelimit");
        cvar_set("g_race_qualifying_timelimit", sa);
        s = cdr(s);
 
        sa = car(s);
        if(sa != "")
            if(cvar("g_race_teams") < 2)
                cvar_set("fraglimit", sa);
        s = cdr(s);
 
        sa = car(s);
        if(sa != "")
            if(cvar("g_race_teams") >= 2)
                cvar_set("fraglimit", sa);
        s = cdr(s);
    }
 
    if(!pWantedType.frags) // these modes don't use fraglimit
    {
        cvar_set("leadlimit", "0");
    }
    else
    {
        sa = car(s);
        if(sa != "")
            cvar_set("leadlimit", sa);
        s = cdr(s);
    }
}
 
string _MapInfo_GetDefaultEx(Gametype t)
{
    return t ? t.model2 : "";
}
 
float _MapInfo_GetTeamPlayBool(Gametype t)
{
    return t ? t.team : false;
}
 
void _MapInfo_Map_ApplyGametypeEx(string s, Gametype pWantedType, Gametype pThisType)
{
    MapInfo_Map_supportedGametypes |= pThisType.gametype_flags;
    if (!(pThisType.gametype_flags & pWantedType.gametype_flags))
        return;
 
    // reset all the cvars to their defaults
 
    cvar_set("timelimit", cvar_defstring("timelimit"));
    cvar_set("leadlimit", cvar_defstring("leadlimit"));
    cvar_set("fraglimit", cvar_defstring("fraglimit"));
    FOREACH(Gametypes, true, it.m_parse_mapinfo(string_null, string_null));
 
    string fraglimit_normal = string_null;
    string fraglimit_teams = string_null;
 
    for (s = strcat(_MapInfo_GetDefaultEx(pWantedType), " ", s); s != ""; s = cdr(s)) {
        string sa = car(s);
        if (sa == "") continue;
        int p = strstrofs(sa, "=", 0);
        if (p < 0) {
            if(WARN_COND)
                LOG_WARNF("Invalid gametype setting in mapinfo for gametype %s: %s", MapInfo_Type_ToString(pWantedType), sa);
            continue;
        }
        string k = substring(sa, 0, p);
        string v = substring(sa, p + 1, -1);
        bool handled = true;
        switch (k) {
            case "timelimit":
            {
                cvar_set("timelimit", v);
                break;
            }
            case "leadlimit":
            {
                cvar_set("leadlimit", v);
                break;
            }
            case "pointlimit":
            case "fraglimit":
            case "lives":
            case "laplimit":
            case "caplimit":
            {
                fraglimit_normal = v;
                break;
            }
            case "teampointlimit":
            case "teamlaplimit":
            {
                fraglimit_teams = v;
                break;
            }
            default:
            {
                handled = false;
                break;
            }
        }
        FOREACH(Gametypes, true, handled |= it.m_parse_mapinfo(k, v));
        if (!handled && WARN_COND)
            LOG_WARNF("Invalid gametype setting in mapinfo for gametype %s: %s", MapInfo_Type_ToString(pWantedType), sa);
    }
 
    if (pWantedType == MAPINFO_TYPE_RACE && cvar("g_race_teams") >= 2)
    {
        if(fraglimit_teams)
            cvar_set("fraglimit", fraglimit_teams);
    }
    else
    {
        if(fraglimit_normal)
            cvar_set("fraglimit", fraglimit_normal);
    }
}
 
Gametype MapInfo_Type_FromString(string gtype, bool dowarn, bool is_q3compat)
{
    string replacement = "";
 
    switch (gtype)
    {
        case "nexball":   replacement = "nb"; break;
        case "freezetag": replacement = "ft"; break;
        case "keepaway":  replacement = "ka"; break;
        case "invasion":  replacement = "inv"; break;
        case "assault":   replacement = "as"; break;
        case "race":      replacement = "rc"; break;
        // Q3/QL compat, see DoesQ3ARemoveThisEntity() in quake3.qc for complete lists
        case "ffa":       replacement = "dm"; break;
        case "cctf": // from ThreeWave, maps with this should all have "ctf" too
        case "oneflag":   replacement = "ctf"; break;
        case "tourney":   replacement = "duel"; break;
        case "arena": // which Q3 mod is this from? In Nexuiz it was 'duel with rounds'.
            if(is_q3compat) { replacement = "ca"; } break;
    }
    if (replacement != "")
    {
        if (dowarn && WARN_COND)
            LOG_WARNF("MapInfo_Type_FromString (probably %s): using deprecated name '%s'. Should use '%s'.", MapInfo_Map_bspname, gtype, replacement);
        gtype = replacement;
    }
    FOREACH(Gametypes, it.mdl == gtype, return it);
    return NULL;
}
 
string MapInfo_Type_Description(Gametype t)
{
    return t ? t.m_description : "";
}
 
string MapInfo_Type_ToString(Gametype t)
{
    return t ? t.mdl : "";
}
 
string MapInfo_Type_ToText(Gametype t)
{
    /* xgettext:no-c-format */
    return t ? t.message : _("@!#%'n Tuba Throwing");
}
 
void _MapInfo_Parse_Settemp(string pFilename, string acl, float type, string s, float recurse)
{
    string t;
    float o;
    // tabs are invalid, treat them as "empty"
    s = strreplace("\t", "", s);
 
    t = car(s); s = cdr(s);
 
    // limited support of "" and comments
    //   remove trailing and leading " of t
    if(substring(t, 0, 1) == "\"")
    {
        if(substring(t, -1, 1) == "\"")
            t = substring(t, 1, -2);
    }
 
    //   remove leading " of s
    if(substring(s, 0, 1) == "\"")
    {
        s = substring(s, 1, -1);
    }
    //   remove trailing " of s, and all that follows (cvar description)
    o = strstrofs(s, "\"", 0);
    if(o >= 0)
        s = substring(s, 0, o);
 
    //   remove // comments
    o = strstrofs(s, "//", 0);
    if(o >= 0)
        s = substring(s, 0, o);
 
    //   remove trailing spaces
    while(substring(s, -1, 1) == " ")
        s = substring(s, 0, -2);
 
    if(t == "#include")
    {
        if(recurse > 0)
        {
            float fh = fopen(s, FILE_READ);
            if(fh < 0)
            {
                if(WARN_COND)
                    LOG_WARN("Map ", pFilename, " references not existing config file ", s);
            }
            else
            {
                while((s = fgets(fh)))
                {
                    s = strreplace("\t", "", s); // treat tabs as "empty", perform here first to ensure coments are detected
                    // catch different sorts of comments
                    if(s == "")                    // empty lines
                        continue;
                    if(substring(s, 0, 1) == "#")  // UNIX style
                        continue;
                    if(substring(s, 0, 2) == "//") // C++ style
                        continue;
                    if(substring(s, 0, 1) == "_")  // q3map style
                        continue;
 
                    if(substring(s, 0, 4) == "set ")
                        s = substring(s, 4, -1);
                    if(substring(s, 0, 5) == "seta ")
                        s = substring(s, 5, -1);
 
                    _MapInfo_Parse_Settemp(pFilename, acl, type, s, recurse - 1);
                }
                fclose(fh);
            }
        }
        else if(WARN_COND)
            LOG_WARN("Map ", pFilename, " uses too many levels of inclusion");
    }
    else if(t == ""
        || !cvar_value_issafe(t)
        || !cvar_value_issafe(s)
        || matchacl(MAPINFO_SETTEMP_ACL_SYSTEM, t) <= 0)
    {
        if (WARN_COND)
            LOG_WARN("Map ", pFilename, " contains a potentially harmful setting, ignored");
    }
    else if(matchacl(acl, t) <= 0)
    {
        if (WARN_COND)
            LOG_WARN("Map ", pFilename, " contains a denied setting, ignored");
    }
    else
    {
        if(type == 0) // server set
        {
            LOG_TRACE("Applying temporary setting ", t, " := ", s);
            cvar_settemp(t, s);
        }
        else
        {
            LOG_TRACE("Applying temporary client setting ", t, " := ", s);
            MapInfo_Map_clientstuff = strcat(
                    MapInfo_Map_clientstuff, "cl_cmd settemp \"", t, "\" \"", s, "\"\n"
                    );
        }
    }
}

string MapInfo_title_sans_author(string title)
{
    int offset;
 
    if ((offset = strstrofs(title, " by ", 0)) >= 0)
    {
        if (MapInfo_Map_author == "<AUTHOR>")
            MapInfo_Map_author = substring(title, offset + 4, strlen(title) - (offset + 4));
        title = substring(title, 0, offset);
    }
    else if ((offset = strstrofs(title, " (by ", 0)) >= 0 || (offset = strstrofs(title, " [by ", 0)) >= 0)
    {
        if (MapInfo_Map_author == "<AUTHOR>")
            MapInfo_Map_author = substring(title, offset + 5, strlen(title) - (offset + 5) - 1);
        title = substring(title, 0, offset);
    }
    else if ((offset = strstrofs(title, "Made By ", 0)) >= 0) // often at the start of the string
    {
        if (MapInfo_Map_author == "<AUTHOR>")
            MapInfo_Map_author = substring(title, offset + 8, strlen(title) - (offset + 8));
        title = substring(title, 0, offset);
    }
 
    return title != "" ? title : "<TITLE>";
}
 
bool MapInfo_isRedundant(string fn, string t)
{
    // normalize file name
    fn = strreplace("_", "", fn);
    fn = strreplace("-", "", fn);
 
    // normalize visible title
    t = strreplace(":", "", t);
    t = strreplace(" ", "", t);
    t = strreplace("_", "", t);
    t = strreplace("-", "", t);
    t = strreplace("'", "", t);
    t = strdecolorize(t);
 
    // we allow the visible title to have punctuation the file name does
    // not, but not vice versa
    if(!strcasecmp(fn, t))
        return true;
 
    return false;
}
 
bool _MapInfo_ParseArena(string arena_filename, int fh, string pFilename, Gametype pGametypeToSet, bool isdefi, bool isgenerator)
{
    // NOTE: .arena files can hold more than 1 map's information!
    // to handle this, we're going to store gathered information in local variables and save it if we encounter the correct map name
    bool in_brackets = false; // testing a potential mapinfo section (within brackets)
    bool dosave = false;
    string stored_Map_description = "";
    string stored_Map_title = "";
    string stored_Map_author = "";
    vector stored_supportedGametypes = '0 0 0';
    int stored_supportedFeatures = 0;
    int stored_flags = 0;
    string t, s;
 
    if (isgenerator)
        LOG_INFO("Generating ", pFilename, ".mapinfo: analyzing ", arena_filename);
 
    for (;;)
    {
        if (!((s = fgets(fh))))
            break;
 
        // catch different sorts of comments
        if(s == "")                    // empty lines
            continue;
        if(substring(s, 0, 2) == "//") // C++ style
            continue;
        if(strstrofs(s, "{", 0) >= 0)
        {
            if(in_brackets)
                return false; // edge case? already in a bracketed section!
            in_brackets = true;
            continue;
        }
        else if(!in_brackets)
        {
            // if we're not inside a bracket, don't process map info
            continue;
        }
        if(strstrofs(s, "}", 0) >= 0)
        {
            if(!in_brackets)
                return false; // no starting bracket! let the mapinfo generation system handle it
            in_brackets = false;
            if(dosave)
            {
                MapInfo_Map_description = stored_Map_description;
                if(stored_Map_title != "")
                    MapInfo_Map_title = stored_Map_title;
                if(stored_Map_author != "") // write the usual "<AUTHOR>" if we have nothing better
                    MapInfo_Map_author = stored_Map_author;
                if(isdefi) // some maps omit the required "style" key and don't appear in defrag's menu
                           // but can still be played in defrag's default gametype with eg `map kool_simple5`.
                    stored_supportedGametypes |= MAPINFO_TYPE_CTS.gametype_flags;
                // might have .arena AND .defi for the same map so these bitfields are OR'd
                if(isgenerator)
                    MapInfo_Map_supportedGametypes |= stored_supportedGametypes;
                else
                {
                    FOREACH(Gametypes, it.gametype_flags & stored_supportedGametypes,
                    {
                        _MapInfo_Map_ApplyGametype ("", pGametypeToSet, it, true);
                    });
                }
                MapInfo_Map_supportedFeatures |= stored_supportedFeatures;
                MapInfo_Map_flags |= stored_flags;
                return true; // no need to continue through the file, we have our map!
            }
            else
            {
                // discard any gathered locals, we're not using the correct map!
                stored_Map_description = "";
                stored_Map_title = "";
                stored_Map_author = "";
                stored_supportedGametypes = '0 0 0';
                stored_supportedFeatures = 0;
                stored_flags = 0;
                continue;
            }
        }
 
        s = strreplace("\t", " ", s);
 
        float p = strstrofs(s, "//", 0);
        if(p >= 0)
            s = substring(s, 0, p);
 
        // perform an initial trim to ensure the first argument is properly obtained
        //   remove leading spaces
        while(substring(s, 0, 1) == " ")
            s = substring(s, 1, -1);
 
        t = car(s); s = cdr(s);
        t = strtolower(t); // apparently some q3 maps use capitalized parameters
 
        //   remove trailing spaces
        while(substring(t, -1, 1) == " ")
            t = substring(t, 0, -2);
 
        //   remove trailing spaces
        while(substring(s, -1, 1) == " ")
            s = substring(s, 0, -2);
        //   remove leading spaces
        while(substring(s, 0, 1) == " ")
            s = substring(s, 1, -1);
        // limited support of ""
        //   remove trailing and leading " of s
        if(substring(s, 0, 1) == "\"")
        {
            if(substring(s, -1, 1) == "\"")
                s = substring(s, 1, -2);
        }
        if(t == "longname")
            stored_Map_title = s;
        else if(t == "author")
            stored_Map_author = s;
        else if(t == "type")
        {
            // if there is a valid gametype in this .arena file, include it in the menu
            stored_supportedFeatures |= MAPINFO_FEATURE_WEAPONS;
            // type in quake 3 holds all the supported gametypes, so we must loop through all of them
            // TODO: handle support here better to include more Xonotic teamplay modes
            string types = s;
            types = strreplace("team", "tdm ft", types);
            types = strreplace("ffa", "dm lms ka", types);
            types = strreplace("tourney", "duel", types); // QL used duel so the following check must support it
            if(strstrofs(types, "duel", 0) < 0 && strstrofs(types, "tdm", 0) >= 0) // larger team map, support additional gametypes!
                types = cons(types, "ca kh");
            FOREACH_WORD(types, true,
            {
                Gametype f = MapInfo_Type_FromString(it, false, true);
                if(f)
                    stored_supportedGametypes |= f.gametype_flags;
            });
        }
        else if(t == "style" && isdefi)
        {
            // we have a defrag map on our hands, add CTS!
            // TODO: styles, see https://ws.q3df.org/level_design/defi/?dark=1
            stored_supportedGametypes |= MAPINFO_TYPE_CTS.gametype_flags;
        }
        else if(t == "map")
        {
            if(strtolower(s) == strtolower(pFilename))
                dosave = true; // yay, found our map!
        }
        else if(t == "quote")
            stored_Map_description = s;
        // TODO: fraglimit
    }
 
    // if the map wasn't found in the .arena, fall back to generated .mapinfo
    return false;
}
 
string _MapInfo_CheckArenaFile(string pFilename, string pMapname)
{
    // returns the file name if valid, otherwise returns ""
    // a string is returned to optimise the use cases where a filename is also returned
    int fh = fopen(pFilename, FILE_READ);
    if(fh < 0)
        return "";
    for(string s; (s = fgets(fh)); )
    {
        s = strreplace("\t", "", s);
        while(substring(s, 0, 1) == " ")
            s = substring(s, 1, -1);
        if(substring(s, 0, 2) == "//")
            continue;
        if(s == "")
            continue;
        int offset = strstrofs(s, "map", 0);
        if(offset >= 0)
        {
            if(strstrofs(strtolower(s), strcat("\"", strtolower(pMapname), "\""), offset) >= 0) // quake 3 is case insensitive
            {
                fclose(fh);
                return pFilename; // FOUND IT!
            }
        }
    }
    fclose(fh);
    return ""; // file did not contain a "map" field matching our map name
}
 
string _MapInfo_FindArenaFile(string pFilename, string extension)
{
    // A valid arena file with the "default" name may have been created as a map-specific
    // override of an arena file with a different name (possibly multi-map) in the pk3
    // (occasionally in the wild such file exists in the pk3 but isn't valid for a map in the pk3).
    // Therefore we try the "default" name first.
    string afile = _MapInfo_CheckArenaFile(strcat("scripts/", pFilename, extension), pFilename);
    if (afile != ""
    || !checkextension("DP_QC_FS_SEARCH_PACKFILE"))
        return afile;
 
    string base_pack = whichpack(strcat("maps/", pFilename, ".bsp"));
    if(base_pack == "") // this map isn't packaged!
        return "";
    int glob = search_packfile_begin(strcat("scripts/*", extension), true, true, base_pack);
    if(glob < 0) // there's no matching file in the pack
        return "";
    int n = search_getsize(glob);
    for(int j = 0; j < n; ++j)
    {
        afile = search_getfilename(glob, j);
        if(_MapInfo_CheckArenaFile(afile, pFilename) != "")
        {
            search_end(glob);
            return afile;
        }
    }
    search_end(glob);
 
    return ""; // if we get here, a valid .arena file could not be found
}
 
// load info about a map by name into the MapInfo_Map_* globals
float MapInfo_Get_ByName_NoFallbacks(string pFilename, int pAllowGenerate, Gametype pGametypeToSet)
{
    string fn;
    string s, t;
    float fh;
    int f, i;
    float r, n;
    string acl = MAPINFO_SETTEMP_ACL_USER;
 
    if(strstrofs(pFilename, "/", 0) >= 0)
    {
        LOG_WARN("Invalid character in map name, ignored");
        return 0;
    }
 
    if(pGametypeToSet == NULL)
        if(MapInfo_Cache_Retrieve(pFilename))
            return 1;
 
    r = 1;
 
    MapInfo_Map_bspname = pFilename;
 
    // default all generic fields so they have "good" values in case something fails
    fn = strcat("maps/", pFilename, ".mapinfo");
    fh = fopen(fn, FILE_READ);
    if(fh < 0)
    {
        if(autocvar_g_mapinfo_q3compat == 1) // use arena data instead of generating a mapinfo file
        {
            // supporting .arena AND .defi for the same map
            bool success = false;
            fn = _MapInfo_FindArenaFile(pFilename, ".arena");
            if(fn != "" && (fh = fopen(fn, FILE_READ)) >= 0)
            {
                _MapInfo_Map_Reset();
                success = _MapInfo_ParseArena(fn, fh, pFilename, pGametypeToSet, false, false);
                fclose(fh);
            }
            fn = _MapInfo_FindArenaFile(pFilename, ".defi");
            if(fn != "" && (fh = fopen(fn, FILE_READ)) >= 0)
            {
                if(!success)
                    _MapInfo_Map_Reset();
                success |= _MapInfo_ParseArena(fn, fh, pFilename, pGametypeToSet, true, false);
                fclose(fh);
            }
            if(success)
                goto mapinfo_handled; // skip generation
        }
 
        fn = strcat("maps/autogenerated/", pFilename, ".mapinfo");
        fh = fopen(fn, FILE_READ);
        if(fh < 0)
        {
            if(!pAllowGenerate)
                return 0;
            _MapInfo_Map_Reset();
            r = _MapInfo_Generate(pFilename);
            if(!r)
                return 0;
            MapInfo_Map_title = MapInfo_title_sans_author(MapInfo_Map_title);
            fh = fopen(fn, FILE_WRITE);
            fputs(fh, strcat("title ", MapInfo_Map_title, "\n"));
            fputs(fh, strcat("description ", MapInfo_Map_description, "\n"));
            fputs(fh, strcat("author ", MapInfo_Map_author, "\n"));
            if(_MapInfo_Map_worldspawn_music != "")
            {
                if(strcasecmp(substring(_MapInfo_Map_worldspawn_music, -4, 4), ".wav") == 0 || strcasecmp(substring(_MapInfo_Map_worldspawn_music, -4, 4), ".ogg") == 0)
                    fputs(fh, strcat("cdtrack ", substring(_MapInfo_Map_worldspawn_music, 0, -4), "\n"));
                else
                    fputs(fh, strcat("cdtrack ", _MapInfo_Map_worldspawn_music, "\n"));
            }
            else
            {
                n = tokenize_console(cvar_string("g_cdtracks_remaplist"));
                s = strcat(" ", cvar_string("g_cdtracks_dontusebydefault"), " ");
                for (;;)
                {
                    i = floor(random() * n);
                    if(strstrofs(s, strcat(" ", argv(i), " "), 0) < 0)
                        break;
                }
                fputs(fh, strcat("cdtrack ", ftos(i + 1), "\n"));
            }
            if(MapInfo_Map_supportedFeatures & MAPINFO_FEATURE_WEAPONS)
                fputs(fh, "has weapons\n");
            else
                fputs(fh, "// uncomment this if you added weapon pickups: has weapons\n");
            if(MapInfo_Map_supportedFeatures & MAPINFO_FEATURE_TURRETS)
                fputs(fh, "has turrets\n");
            else
                fputs(fh, "// uncomment this if you added turrets: has turrets\n");
            if(MapInfo_Map_supportedFeatures & MAPINFO_FEATURE_VEHICLES)
                fputs(fh, "has vehicles\n");
            else
                fputs(fh, "// uncomment this if you added vehicles: has vehicles\n");
            if(MapInfo_Map_flags & MAPINFO_FLAG_FRUSTRATING)
                fputs(fh, "frustrating\n");
 
            FOREACH(Gametypes, MapInfo_Map_supportedGametypes & it.gametype_flags, {
                fputs(fh, sprintf("gametype %s // defaults: %s\n", MapInfo_Type_ToString(it), _MapInfo_GetDefaultEx(it)));
            });
 
            fputs(fh, "// optional: fog density red green blue alpha mindist maxdist\n");
            fputs(fh, "// optional: settemp_for_type (all|gametypename) cvarname value\n");
            fputs(fh, "// optional: clientsettemp_for_type (all|gametypename) cvarname value\n");
            fputs(fh, "// optional: size mins_x mins_y mins_z maxs_x maxs_y maxs_z\n");
            fputs(fh, "// optional: hidden\n");
 
            fclose(fh);
            r = 2;
            // return r;
            fh = fopen(fn, FILE_READ);
            if(fh < 0)
                error("... but I just wrote it!");
        }
 
        if(WARN_COND)
            LOG_WARN("autogenerated mapinfo file ", fn, " has been loaded; please edit that file and move it to maps/", pFilename, ".mapinfo");
    }
 
    _MapInfo_Map_Reset();
    for (;;)
    {
        if (!((s = fgets(fh))))
            break;
 
        // catch different sorts of comments
        if(s == "")                    // empty lines
            continue;
        if(substring(s, 0, 1) == "#")  // UNIX style
            continue;
        if(substring(s, 0, 2) == "//") // C++ style
            continue;
        if(substring(s, 0, 1) == "_")  // q3map style
            continue;
 
        float p = strstrofs(s, "//", 0);
        if(p >= 0)
            s = substring(s, 0, p);
 
        t = car(s); s = cdr(s);
        if(p > 0 && (t == "" || t == "\t")) // indented comment line
            continue;
        if(t == "title")
            MapInfo_Map_title = s;
        else if(t == "description")
            MapInfo_Map_description = s;
        else if(t == "author")
            MapInfo_Map_author = s;
        else if(t == "has")
        {
            t = car(s); // s = cdr(s);
            if     (t == "weapons") MapInfo_Map_supportedFeatures |= MAPINFO_FEATURE_WEAPONS;
            else if(t == "turrets") MapInfo_Map_supportedFeatures |= MAPINFO_FEATURE_TURRETS;
            else if(t == "vehicles") MapInfo_Map_supportedFeatures |= MAPINFO_FEATURE_VEHICLES;
            else if(t == "monsters") MapInfo_Map_supportedFeatures |= MAPINFO_FEATURE_MONSTERS;
            else if(t == "new_toys") MapInfo_Map_supportedFeatures |= MAPINFO_FEATURE_WEAPONS;
            else if(WARN_COND)
                LOG_WARN("Map ", pFilename, " supports unknown feature ", t, ", ignored");
        }
        else if(t == "hidden")
        {
            MapInfo_Map_flags |= MAPINFO_FLAG_HIDDEN;
        }
        else if(t == "forbidden")
        {
            MapInfo_Map_flags |= MAPINFO_FLAG_FORBIDDEN;
        }
        else if(t == "frustrating")
        {
            MapInfo_Map_flags |= MAPINFO_FLAG_FRUSTRATING;
        }
        else if(t == "donotwant" || t == "noautomaplist")
        {
            MapInfo_Map_flags |= MAPINFO_FLAG_DONOTWANT;
        }
        else if(t == "gameversion_min")
        {
            if (cvar("gameversion") < stof(s))
                MapInfo_Map_flags |= MAPINFO_FLAG_DONOTWANT;
        }
        else if(t == "type")
        {
            t = car(s); s = cdr(s);
            Gametype f = MapInfo_Type_FromString(t, true, false);
            //if(WARN_COND)
                //LOG_WARN("Map ", pFilename, " contains the legacy 'type' keyword which is deprecated and will be removed in the future. Please migrate the mapinfo file to 'gametype'.");
            if(f)
                _MapInfo_Map_ApplyGametype (s, pGametypeToSet, f, true);
            else if(WARN_COND)
                LOG_DEBUG("Map ", pFilename, " supports unknown gametype ", t, ", ignored");
        }
        else if(t == "gametype")
        {
            t = car(s); s = cdr(s);
            Gametype f = MapInfo_Type_FromString(t, true, false);
            if(f)
                _MapInfo_Map_ApplyGametypeEx (s, pGametypeToSet, f);
            else if(WARN_COND)
                LOG_DEBUG("Map ", pFilename, " supports unknown gametype ", t, ", ignored");
        }
        else if(t == "size")
        {
            float a, b, c, d, e;
            t = car(s); s = cdr(s); a = stof(t);
            t = car(s); s = cdr(s); b = stof(t);
            t = car(s); s = cdr(s); c = stof(t);
            t = car(s); s = cdr(s); d = stof(t);
            t = car(s); s = cdr(s); e = stof(t);
            if(s == "")
            {
                if(WARN_COND)
                    LOG_WARN("Map ", pFilename, " contains an incorrect size line (not enough params), syntax: size mins_x mins_y mins_z maxs_x maxs_y maxs_z");
            }
            else
            {
                t = car(s); s = cdr(s); f = stof(t);
                if(s != "")
                {
                    if(WARN_COND)
                        LOG_WARN("Map ", pFilename, " contains an incorrect size line (too many params), syntax: size mins_x mins_y mins_z maxs_x maxs_y maxs_z");
                }
                else
                {
                    if(a >= d || b >= e || c >= f)
                    {
                        if(WARN_COND)
                            LOG_WARN("Map ", pFilename, " contains an incorrect size line, mins have to be < maxs");
                    }
                    else
                    {
                        MapInfo_Map_mins.x = a;
                        MapInfo_Map_mins.y = b;
                        MapInfo_Map_mins.z = c;
                        MapInfo_Map_maxs.x = d;
                        MapInfo_Map_maxs.y = e;
                        MapInfo_Map_maxs.z = f;
                    }
                }
            }
        }
        else if(t == "settemp_for_type")
        {
            t = car(s); s = cdr(s);
            bool all = t == "all";
            Gametype f = NULL;
            if(all || (f = MapInfo_Type_FromString(t, true, false)))
            {
                if((all ? MAPINFO_TYPE_ALL : f.gametype_flags) & pGametypeToSet.gametype_flags)
                {
                    _MapInfo_Parse_Settemp(pFilename, acl, 0, s, 1);
                }
            }
            else
            {
                LOG_DEBUG("Map ", pFilename, " has a setting for unknown gametype ", t, ", ignored");
            }
        }
        else if(t == "clientsettemp_for_type")
        {
            t = car(s); s = cdr(s);
            bool all = t == "all";
            Gametype f = NULL;
            if(all || (f = MapInfo_Type_FromString(t, true, false)))
            {
                if((all ? MAPINFO_TYPE_ALL : f.gametype_flags) & pGametypeToSet.gametype_flags)
                {
                    _MapInfo_Parse_Settemp(pFilename, acl, 1, s, 1);
                }
            }
            else
            {
                LOG_DEBUG("Map ", pFilename, " has a client setting for unknown gametype ", t, ", ignored");
            }
        }
        else if(t == "fog")
        {
            if (!cvar_value_issafe(s))
            {
                if(WARN_COND)
                    LOG_WARN("Map ", pFilename, " contains a potentially harmful fog setting, ignored");
            }
            else
                MapInfo_Map_fog = s;
        }
        else if(t == "cdtrack")
        {
            t = car(s); s = cdr(s);
            // We do this only if pGametypeToSet even though this
            // content is theoretically gametype independent,
            // because MapInfo_Map_clientstuff contains otherwise
            // gametype dependent stuff. That way this value stays
            // empty when not setting a gametype to not set any
            // false expectations.
            if(pGametypeToSet)
            {
                if (!cvar_value_issafe(t))
                {
                    if(WARN_COND)
                        LOG_WARN("Map ", pFilename, " contains a potentially harmful cdtrack, ignored");
                }
                else
                    MapInfo_Map_clientstuff = strcat(
                        MapInfo_Map_clientstuff, "cd loop \"", t, "\"\n"
                    );
            }
        }
        else if(WARN_COND)
            LOG_WARN("Map ", pFilename, " provides unknown info item \"", t, "\", ignored");
    }
    fclose(fh);
 
LABEL(mapinfo_handled)
#ifdef SVQC
    // if the map is currently loaded we can read worldspawn fields directly
    if (pFilename == mi_shortname)
    {
        if (MapInfo_Map_title == "<TITLE>")
            if (world.message != "")
                MapInfo_Map_title = world.message;
        if (MapInfo_Map_author == "<AUTHOR>")
            if ((s = GetField_fullspawndata(world, "author", false)) != "")
                MapInfo_Map_author = s;
    }
#endif
    // Could skip removing author from title when it's source is .mapinfo
    // but must always do it for world.message and .arena/.defi as VQ3 didn't support author
    // so mappers tended to put it in world.message and/or longname.
    MapInfo_Map_title = MapInfo_title_sans_author(MapInfo_Map_title); // may set author if not set
 
    if(MapInfo_Map_title == "<TITLE>")
        MapInfo_Map_titlestring = strcat("^2", MapInfo_Map_bspname);
    else if(MapInfo_isRedundant(MapInfo_Map_bspname, MapInfo_Map_title))
        MapInfo_Map_titlestring = strcat("^2", MapInfo_Map_title);
    else
        MapInfo_Map_titlestring = sprintf("^2%s ^7// ^2%s", MapInfo_Map_bspname, MapInfo_Map_title);
 
    if (MapInfo_Map_author == "<AUTHOR>")
        MapInfo_Map_author = ""; // don't display "<AUTHOR>" in the UI (we do write it to .mapinfo files)
 
    MapInfo_Cache_Store();
    if(MapInfo_Map_supportedGametypes != '0 0 0')
        return r;
    if (WARN_COND)
        LOG_WARN("Map ", pFilename, " supports no gametypes, ignored");
    return 0;
}
int MapInfo_Get_ByName(string pFilename, float pAllowGenerate, Gametype pGametypeToSet)
{
    int r = MapInfo_Get_ByName_NoFallbacks(pFilename, pAllowGenerate, pGametypeToSet);
 
    FOREACH(Gametypes, it.m_isForcedSupported(it), _MapInfo_Map_ApplyGametypeEx("", pGametypeToSet, it));
 
    if(pGametypeToSet)
    {
        if(!(MapInfo_Map_supportedGametypes & pGametypeToSet.gametype_flags))
        {
            error("Can't select the requested gametype. This should never happen as the caller should prevent it!\n");
            //_MapInfo_Map_ApplyGametypeEx("", pGametypeToSet, MAPINFO_TYPE_DEATHMATCH);
            //return;
        }
    }
 
    return r;
}
 
bool MapReadSizes(string map)
{
    // TODO: implement xonotic#28 / xonvote 172 (sizes in mapinfo)
    string readsize_msg = strcat("MapReadSizes ", map);
    float fh = fopen(strcat("maps/", map, ".sizes"), FILE_READ);
    if(fh >= 0)
    {
        map_minplayers = stoi(fgets(fh));
        map_maxplayers = stoi(fgets(fh));
        fclose(fh);
        LOG_TRACEF(readsize_msg, ": ok, min %d max %d", map_minplayers, map_maxplayers);
        return true;
    }
    LOG_TRACE(readsize_msg, ": not found");
    return false;
}
 
float MapInfo_FindName(string s)
{
    // if there is exactly one map of prefix s, return it
    // if not, return the null string
    // note that DP sorts glob results... so I can use a binary search
    float l, r, m, cmp;
    l = 0;
    r = MapInfo_count;
    // invariants: r is behind s, l-1 is equal or before
    while(l != r)
    {
        m = floor((l + r) / 2);
        MapInfo_FindName_match = _MapInfo_GlobItem(MapInfo_FilterList_Lookup(m));
        cmp = strcasecmp(MapInfo_FindName_match, s);
        if(cmp == 0)
            return m; // found and good
        if(cmp < 0)
            l = m + 1; // l-1 is before s
        else
            r = m; // behind s
    }
    MapInfo_FindName_match = _MapInfo_GlobItem(MapInfo_FilterList_Lookup(l));
    MapInfo_FindName_firstResult = l;
    // r == l, so: l is behind s, l-1 is before
    // SO: if there is any, l is the one with the right prefix
    //     and l+1 may be one too
    if(l == MapInfo_count)
    {
        MapInfo_FindName_match = string_null;
        MapInfo_FindName_firstResult = -1;
        return -1; // no MapInfo_FindName_match, behind last item
    }
    if(!startsWithNocase(MapInfo_FindName_match, s))
    {
        MapInfo_FindName_match = string_null;
        MapInfo_FindName_firstResult = -1;
        return -1; // wrong prefix
    }
    if(l == MapInfo_count - 1)
        return l; // last one, nothing can follow => unique
    if(startsWithNocase(_MapInfo_GlobItem(MapInfo_FilterList_Lookup(l + 1)), s))
    {
        MapInfo_FindName_match = string_null;
        return -1; // ambigous MapInfo_FindName_match
    }
    return l;
}
 
string MapInfo_FixName(string s)
{
    MapInfo_FindName(s);
    return MapInfo_FindName_match;
}
 
int MapInfo_CurrentFeatures()
{
    int req = 0;
    // TODO: find a better way to check if weapons are required on the map
    if(!(cvar("g_instagib") || cvar("g_overkill") || cvar("g_nix") || cvar("g_weaponarena") || !cvar("g_pickup_items") || !cvar("g_melee_only") 
        || cvar("g_race") || cvar("g_cts") || cvar("g_nexball") || cvar("g_ca") || cvar("g_freezetag") || cvar("g_lms")))
        req |= MAPINFO_FEATURE_WEAPONS;
    return req;
}
 
Gametype MapInfo_CurrentGametype()
{
    Gametype prev = MapInfo_Type_FromString(cvar_string("gamecfg"), false, false);
    FOREACH(Gametypes, cvar(it.netname) && it != prev, return it);
    return prev ? prev : MAPINFO_TYPE_DEATHMATCH;
}
 
float _MapInfo_CheckMap(string s, bool gametype_only) // returns 0 if the map can't be played with the current settings, 1 otherwise
{
    if(!MapInfo_Get_ByName(s, 1, NULL))
        return 0;
    if(!(MapInfo_Map_supportedGametypes & MapInfo_CurrentGametype().gametype_flags))
        return 0;
    if (gametype_only)
        return 1;
    if((MapInfo_Map_supportedFeatures & MapInfo_CurrentFeatures()) != MapInfo_CurrentFeatures())
        return 0;
    return 1;
}
 
float MapInfo_CheckMap(string s) // returns 0 if the map can't be played with the current settings, 1 otherwise
{
    float r = _MapInfo_CheckMap(s, false);
    MapInfo_ClearTemps();
    return r;
}
 
void MapInfo_SwitchGameType(Gametype t)
{
    FOREACH(Gametypes, true, cvar_set(it.netname, (it == t) ? "1" : "0"));
}
 
void MapInfo_LoadMap(string s, float reinit)
{
    MapInfo_Map_supportedGametypes = '0 0 0';
    // we shouldn't need this, as LoadMapSettings already fixes the gametype
    //if(!MapInfo_CheckMap(s))
    //{
    //  print("EMERGENCY: can't play the selected map in the given gametype. Falling back to DM.\n");
    //  MapInfo_SwitchGameType(MAPINFO_TYPE_DEATHMATCH.gametype_flags);
    //}
 
    LOG_INFO("Switching to map ", s);
 
    cvar_settemp_restore();
    if (reinit)
        localcmd(strcat("\nmap ", s, "\n"));
    else
        localcmd(strcat("\nchangelevel ", s, "\n"));
}
 
string MapInfo_ListAllowedMaps(Gametype type, float pRequiredFlags, float pForbiddenFlags)
{
    string out;
 
    // to make absolutely sure:
    MapInfo_Enumerate();
    MapInfo_FilterGametype(type, MapInfo_CurrentFeatures(), pRequiredFlags, pForbiddenFlags, 0);
 
    out = "";
    for(float i = 0; i < MapInfo_count; ++i)
        out = strcat(out, " ", _MapInfo_GlobItem(MapInfo_FilterList_Lookup(i)));
    return substring(out, 1, strlen(out) - 1);
}
 
string MapInfo_ListAllAllowedMaps(float pRequiredFlags, float pForbiddenFlags)
{
    string out;
 
    // to make absolutely sure:
    MapInfo_Enumerate();
    _MapInfo_FilterGametype(MAPINFO_TYPE_ALL, 0, pRequiredFlags, pForbiddenFlags, 0);
 
    out = "";
    for(float i = 0; i < MapInfo_count; ++i)
        out = strcat(out, " ", _MapInfo_GlobItem(MapInfo_FilterList_Lookup(i)));
 
    MapInfo_FilterGametype(MapInfo_CurrentGametype(), MapInfo_CurrentFeatures(), pRequiredFlags, pForbiddenFlags, 0);
 
    return substring(out, 1, strlen(out) - 1);
}
 
void MapInfo_LoadMapSettings_SaveGameType(Gametype t)
{
    MapInfo_SwitchGameType(t);
    cvar_set("gamecfg", t.mdl);
    MapInfo_LoadedGametype = t;
}
 
void MapInfo_LoadMapSettings(string s) // to be called from worldspawn
{
    Gametype t = MapInfo_CurrentGametype();
    MapInfo_LoadMapSettings_SaveGameType(t);
 
    if(!_MapInfo_CheckMap(s, true)) // with underscore, it keeps temps
    {
        if(cvar("g_mapinfo_allow_unsupported_modes_and_let_stuff_break"))
        {
            LOG_SEVERE("can't play the selected map in the given gametype. Working with only the override settings.");
            _MapInfo_Map_ApplyGametypeEx("", t, t);
            return; // do not call Get_ByName!
        }
 
        if(MapInfo_Map_supportedGametypes == '0 0 0')
        {
            RandomSelection_Init();
            FOREACH(Gametypes, it.m_priority == 2, 
            {
                MapInfo_Map_supportedGametypes |= it.gametype_flags;
                RandomSelection_AddEnt(it, 1, 1);
            });
            if(RandomSelection_chosen_ent)
                t = RandomSelection_chosen_ent;
            LOG_SEVEREF("Mapinfo system is not functional at all. Falling back to a preferred mode (%s).", t.mdl);
            MapInfo_LoadMapSettings_SaveGameType(t);
            _MapInfo_Map_ApplyGametypeEx("", t, t);
            return; // do not call Get_ByName!
        }
 
#if 0
        // find the lowest bit in the supported gametypes
        // unnecessary now that we select one at random
        int _t = 1;
        while(!(MapInfo_Map_supportedGametypes & 1))
        {
            _t <<= 1;
            MapInfo_Map_supportedGametypes = floor(MapInfo_Map_supportedGametypes >> 1);
        }
#endif
        RandomSelection_Init();
        Gametype t_prev = t;
        FOREACH(Gametypes, MapInfo_Map_supportedGametypes & it.gametype_flags,
        {
            RandomSelection_AddEnt(it, 1, it.m_priority);
        });
        if(RandomSelection_chosen_ent)
            t = RandomSelection_chosen_ent;
 
        // t is now a supported mode!
        LOG_WARNF("can't play the selected map in the given gametype (%s). Falling back to a supported mode (%s).", t_prev.mdl, t.mdl);
        MapInfo_LoadMapSettings_SaveGameType(t);
    }
    if(!_MapInfo_CheckMap(s, false)) { // with underscore, it keeps temps
        LOG_WARNF("the selected map lacks features required by current settings; playing anyway.");
    }
    MapInfo_Get_ByName(s, 1, t);
}
 
void MapInfo_ClearTemps()
{
    MapInfo_Map_bspname = string_null;
    MapInfo_Map_title = string_null;
    MapInfo_Map_titlestring = string_null;
    MapInfo_Map_description = string_null;
    MapInfo_Map_author = string_null;
    MapInfo_Map_clientstuff = string_null;
    MapInfo_Map_supportedGametypes = '0 0 0';
    MapInfo_Map_supportedFeatures = 0;
}
 
void MapInfo_Shutdown()
{
    MapInfo_ClearTemps();
    MapInfo_Filter_Free();
    MapInfo_Cache_Destroy();
    if(_MapInfo_globopen)
    {
        search_end(_MapInfo_globhandle);
        _MapInfo_globhandle = -1;
        _MapInfo_globopen = false;
    }
}
 
int MapInfo_ForbiddenFlags()
{
    int f = MAPINFO_FLAG_FORBIDDEN;
 
#ifdef GAMEQC
    if (!cvar("g_maplist_allow_hidden"))
#endif
        f |= MAPINFO_FLAG_HIDDEN;
 
    if (!cvar("g_maplist_allow_frustrating"))
        f |= MAPINFO_FLAG_FRUSTRATING;
 
    return f;
}
 
int MapInfo_RequiredFlags()
{
    int f = 0;
 
    if(cvar("g_maplist_allow_frustrating") > 1)
        f |= MAPINFO_FLAG_FRUSTRATING;
 
    return f;
}