sv_mapcycle.cpp

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#include "server.h"
#include "../shared/parse.h"

typedef struct mapcycle_s {
    char* map;          
    char* type;         
    bool day;       
    struct mapcycle_s* next;    
} mapcycle_t;

static mapcycle_t* mapcycleList;    
static int mapcycleCount;       
void SV_NextMapcycle (void)
{
    const char* map = nullptr, *gameType = nullptr;
    bool day = true;
    char expanded[MAX_QPATH];
    mapcycle_t* mapcycle = mapcycleList;

    if (sv->name[0]) {
        Com_Printf("current map: %s\n", sv->name);
        for (int i = 0; i < mapcycleCount; i++) {
            /* random maps may have a theme - but that's not stored in sv->name
             * but in sv->assembly */
            if (mapcycle->map[0] == '+') {
                Q_strncpyz(expanded, mapcycle->map, sizeof(expanded));
                char* base = strstr(expanded, " ");
                if (base) {
                    char assembly[MAX_QPATH];
                    base[0] = '\0'; /* split the strings */
                    Q_strncpyz(assembly, base + 1, sizeof(assembly));
                    /* get current position */
                    if (Q_streq(sv->name, expanded) && Q_streq(sv->assembly, assembly)) {
                        /* next map in cycle */
                        if (mapcycle->next) {
                            map = mapcycle->next->map;
                            day = mapcycle->next->day;
                            gameType = mapcycle->next->type;
                            Com_DPrintf(DEBUG_SERVER, "SV_NextMapcycle: next one: '%s' (gametype: %s)\n", map, gameType);
                        /* switch back to first list on cycle - if there is one */
                        } else {
                            map = mapcycleList->map;
                            day = mapcycleList->day;
                            gameType = mapcycleList->type;
                            Com_DPrintf(DEBUG_SERVER, "SV_NextMapcycle: first one: '%s' (gametype: %s)\n", map, gameType);
                        }
                        break;
                    }
                } else {
                    Com_Printf("ignore mapcycle entry for random map (%s) with"
                        " no assembly given\n", mapcycle->map);
                }
            } else {
                /* get current position */
                if (Q_streq(sv->name, mapcycle->map)) {
                    /* next map in cycle */
                    if (mapcycle->next) {
                        map = mapcycle->next->map;
                        day = mapcycle->next->day;
                        gameType = mapcycle->next->type;
                        Com_DPrintf(DEBUG_SERVER, "SV_NextMapcycle: next one: '%s' (gametype: %s)\n", map, gameType);
                    /* switch back to first list on cycle - if there is one */
                    } else {
                        map = mapcycleList->map;
                        day = mapcycleList->day;
                        gameType = mapcycleList->type;
                        Com_DPrintf(DEBUG_SERVER, "SV_NextMapcycle: first one: '%s' (gametype: %s)\n", map, gameType);
                    }
                    Com_sprintf(expanded, sizeof(expanded), "maps/%s.bsp", map);

                    /* check for bsp file */
                    if (map[0] != '+' && FS_CheckFile("%s", expanded) < 0) {
                        Com_Printf("SV_NextMapcycle: Can't find '%s' - mapcycle error\n"
                            "Use the 'maplist' command to get a list of valid maps\n", expanded);
                        map = nullptr;
                        gameType = nullptr;
                    } else
                        break;
                }
            }
            mapcycle = mapcycle->next;
        }
    }

    if (!map) {
        if (mapcycleCount > 0) {
            map = mapcycleList->map;
            day = mapcycleList->day;
            gameType = mapcycleList->type;
            if (map[0] != '+') {
                Com_sprintf(expanded, sizeof(expanded), "maps/%s.bsp", map);

                /* check for bsp file */
                if (FS_CheckFile("%s", expanded) < 0) {
                    Com_Printf("SV_NextMapcycle: Can't find '%s' - mapcycle error\n"
                        "Use the 'maplist' command to get a list of valid maps\n", expanded);
                    return;
                }
            }
        } else if (sv->name[0]) {
            Com_Printf("No mapcycle - restart the current map (%s)\n", sv->name);
            map = sv->name;
            gameType = nullptr;
        } else {
            Com_Printf("No mapcycle and no running map\n");
            return;
        }
        /* still not set? */
        if (!map)
            return;
    }

    /* check whether we want to change the gametype, too */
    if (gameType && gameType[0] != '\0') {
        Cvar_Set("sv_gametype", "%s", gameType);
        Com_SetGameType();
        sv_gametype->modified = false;
    }

    if (day)
        Cbuf_AddText("map day %s", map);
    else
        Cbuf_AddText("map night %s", map);
}

void SV_MapcycleClear (void)
{
    mapcycle_t* mapcycle = mapcycleList;

    for (int i = 0; i < mapcycleCount; i++) {
        mapcycle_t* oldMapcycle = mapcycle;
        mapcycle = mapcycle->next;
        Mem_Free(oldMapcycle->type);
        Mem_Free(oldMapcycle->map);
        Mem_Free(oldMapcycle);
    }

    /* reset the mapcycle data */
    mapcycleList = nullptr;
    mapcycleCount = 0;
}

static void SV_MapcycleAdd (const char* mapName, bool day, const char* gameType)
{
    mapcycle_t* const mapcycle = Mem_PoolAllocType(mapcycle_t, sv_genericPool);
    mapcycle->map  = Mem_PoolStrDup(mapName, sv_genericPool, 0);
    mapcycle->day  = day;
    mapcycle->type = Mem_PoolStrDup(gameType, sv_genericPool, 0);
    mapcycle->next = 0;
    Com_DPrintf(DEBUG_SERVER, "mapcycle add: '%s' type '%s'\n", mapcycle->map, mapcycle->type);

    /* Append to end of list. */
    mapcycle_t** anchor = &mapcycleList;
    while (*anchor) anchor = &(*anchor)->next;
    *anchor = mapcycle;

    ++mapcycleCount;
}

static void SV_ParseMapcycle (void)
{
    int length = 0;
    byte* buffer = nullptr;
    const char* buf;

    mapcycleCount = 0;
    mapcycleList = nullptr;

    length = FS_LoadFile("mapcycle.txt", &buffer);
    if (length == -1 || !buffer)
        return;

    if (length != -1) {
        buf = (const char*)buffer;
        do {
            bool day = false;
            const char* token;
            char map[MAX_VAR], gameType[MAX_VAR];
            /* parse map name */
            token = Com_Parse(&buf);
            if (!buf)
                break;
            Q_strncpyz(map, token, sizeof(map));
            /* parse day or night */
            token = Com_Parse(&buf);
            if (!buf)
                break;
            if (Q_streq(token, "day"))
                day = true;
            else if (!Q_streq(token, "night")) {
                Com_Printf("Skip mapcycle parsing, expected day or night.");
                break;
            }
            /* parse gametype */
            token = Com_Parse(&buf);
            if (!buf)
                break;
            Q_strncpyz(gameType, token, sizeof(gameType));
            SV_MapcycleAdd(map, day, gameType);
        } while (buf);

        Com_Printf("added %i maps to the mapcycle\n", mapcycleCount);
    }
    FS_FreeFile(buffer);
}

static void SV_MapcycleList_f (void)
{
    const mapcycle_t* mapcycle = mapcycleList;

    Com_Printf("current mapcycle has %i entries\n", mapcycleCount);
    for (int i = 0; i < mapcycleCount; i++) {
        Com_Printf(" %s (%s)\n", mapcycle->map, mapcycle->type);
        mapcycle = mapcycle->next;
    }
}

static void SV_MapcycleAdd_f (void)
{
    if (Cmd_Argc() == 4) {
        const char* map = Cmd_Argv(1);
        const char* day = Cmd_Argv(2);
        const char* gametype = Cmd_Argv(3);
        if (!SV_CheckMap(map, nullptr)) {
            Com_Printf("map '%s' isn't a valid map\n", map);
            return;
        }
        Com_Printf("adding map '%s' with gametype '%s' to mapcycle (to add this permanently edit your mapcycle.txt)\n", map, gametype);
        if (Q_streq(day, "day"))
            SV_MapcycleAdd(map, true, gametype);
        else
            SV_MapcycleAdd(map, false, gametype);
    } else {
        Com_Printf("Usage: %s <mapname> <day|night> <gametype>\n", Cmd_Argv(0));
        Com_Printf(" ...to get a list of valid maps type 'maplist'\n"
            " ...to get a list of valid gametypes 'gametypelist'\n");
    }
}

static void SV_MapcycleNext_f (void)
{
    if (mapcycleCount > 0)
        SV_NextMapcycle();
    else
        Com_Printf("no mapcycle.txt\n");
}

void SV_MapcycleInit (void)
{
    SV_ParseMapcycle();

    Cmd_AddCommand("mapcyclelist", SV_MapcycleList_f, "Print the current mapcycle");
    Cmd_AddCommand("mapcyclenext", SV_MapcycleNext_f, "Start the next map from the cycle");
    Cmd_AddCommand("mapcycleclear", SV_MapcycleClear, "Delete the current mapcycle");
    Cmd_AddCommand("mapcycleadd", SV_MapcycleAdd_f, "Add new maps to the mapcycle");
}