checkextension.qc

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#include "checkextension.qh"
 
#ifdef GAMEQC
entity findbox_tofield_Fallback(vector mins, vector maxs, .entity tofield)
{
    // 0.03125 minimum radius because findradius returns no results if radius is zero
    // but findbox for a zero-sized box returns entities touching the specified point
    entity chain = findradius_tofield(0.5 * (mins + maxs), max(0.03125, 0.5 * vlen(maxs - mins)), tofield);
    entity prev = NULL;
    for (entity e = chain; e; e = e.tofield)
    {
        if (boxesoverlap(e.absmin, e.absmax, mins, maxs))
            prev = e;
        else // not in box so remove from chain
        {
            if (prev)
                prev.tofield = e.tofield;
            else
                chain = chain.tofield;
        }
    }
    return chain;
}
entity findbox_Fallback(vector mins, vector maxs)
{
    return findbox_tofield_Fallback(mins, maxs, chain);
}
#endif // GAMEQC
 
void CheckEngineExtensions(void)
{
    if (!cvar("pr_checkextension"))
        LOG_FATAL("Engine lacks the QC extension system.");
 
    if (!checkextension("DP_QC_URI_GET") || !checkextension("DP_QC_URI_POST"))
        LOG_WARN("Engine lacks HTTP support, XonStat and map downloads are unavailable.");
 
    if (!checkextension("DP_CRYPTO"))
        LOG_WARN("Engine lacks DP_CRYPTO, Player IDs (required for XonStat, CTS/CTF records and pubkey authentication) are unavailable.");
 
#ifdef SVQC // change to GAMEQC if/when we use nudgeoutofsolid in CSQC
    if (checkextension("DP_QC_NUDGEOUTOFSOLID"))
    {
        nudgeoutofsolid_OrFallback = nudgeoutofsolid;
    }
    else
    {
        LOG_WARN("Engine lacks DP_QC_NUDGEOUTOFSOLID, falling back to WarpZoneLib_MoveOutOfSolid().");
        // DP_QC_NUDGEOUTOFSOLID fixes many cases WarpZoneLib_MoveOutOfSolid() can't, usually in less CPU time
        nudgeoutofsolid_OrFallback = WarpZoneLib_MoveOutOfSolid;
    }
 
    if (!world.fullspawndata)
        LOG_WARN("Engine lacks entity fullspawndata, on Quake 3 maps some entities will malfunction.");
 
    if (!checkextension("DP_RM_CLIPGROUP"))
        LOG_WARN("Engine lacks DP_RM_CLIPGROUP, g_projectiles_interact < 2 won't take effect.");
#endif
 
#ifdef GAMEQC
    if (checkextension("DP_QC_FINDBOX"))
    {
        findbox_OrFallback = findbox;
        findbox_tofield_OrFallback = findbox_tofield;
    }
    else
    {
        LOG_WARN("Engine lacks DP_QC_FINDBOX, performance will be suboptimal.");
        findbox_OrFallback = findbox_Fallback;
        findbox_tofield_OrFallback = findbox_tofield_Fallback;
    }
#endif
 
    // TODO: add proper warns/errors for other extensions we depend on
}