protocol.c

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#include "quakedef.h"
 
// this is 88 bytes (must match entity_state_t in protocol.h)
entity_state_t defaultstate =
{
    // ! means this is not sent to client
    0,//double time; // ! time this state was built (used on client for interpolation)
    {0,0,0},//float netcenter[3]; // ! for network prioritization, this is the center of the bounding box (which may differ from the origin)
    {0,0,0},//float origin[3];
    {0,0,0},//float angles[3];
    0,//int effects;
    0,//unsigned int customizeentityforclient; // !
    0,//unsigned short number; // entity number this state is for
    0,//unsigned short modelindex;
    0,//unsigned short frame;
    0,//unsigned short tagentity;
    0,//unsigned short specialvisibilityradius; // ! larger if it has effects/light
    0,//unsigned short viewmodelforclient; // !
    0,//unsigned short exteriormodelforclient; // ! not shown if first person viewing from this entity, shown in all other cases
    0,//unsigned short nodrawtoclient; // !
    0,//unsigned short drawonlytoclient; // !
    0,//unsigned short traileffectnum;
    {0,0,0,0},//unsigned short light[4]; // color*256 (0.00 to 255.996), and radius*1
    ACTIVE_NOT,//unsigned char active; // true if a valid state
    0,//unsigned char lightstyle;
    0,//unsigned char lightpflags;
    0,//unsigned char colormap;
    0,//unsigned char skin; // also chooses cubemap for rtlights if lightpflags & LIGHTPFLAGS_FULLDYNAMIC
    255,//unsigned char alpha;
    16,//unsigned char scale;
    0,//unsigned char glowsize;
    254,//unsigned char glowcolor;
    0,//unsigned char flags;
    0,//unsigned char internaleffects; // INTEF_FLAG1QW and so on
    0,//unsigned char tagindex;
    {32, 32, 32},//unsigned char colormod[3];
    {32, 32, 32},//unsigned char glowmod[3];
};
 
// LadyHavoc: I own protocol ranges 96, 97, 3500-3599
 
struct protocolversioninfo_s
{
    int number;
    protocolversion_t version;
    const char *name;
}
protocolversioninfo[] =
{
    { 3505, PROTOCOL_DARKPLACES8 , "DP8"},
    { 3504, PROTOCOL_DARKPLACES7 , "DP7"},
    { 3503, PROTOCOL_DARKPLACES6 , "DP6"},
    { 3502, PROTOCOL_DARKPLACES5 , "DP5"},
    { 3501, PROTOCOL_DARKPLACES4 , "DP4"},
    { 3500, PROTOCOL_DARKPLACES3 , "DP3"},
    {   97, PROTOCOL_DARKPLACES2 , "DP2"},
    {   96, PROTOCOL_DARKPLACES1 , "DP1"},
    {   15, PROTOCOL_QUAKEDP     , "QUAKEDP"},
    {   15, PROTOCOL_QUAKE       , "QUAKE"},
    {   28, PROTOCOL_QUAKEWORLD  , "QW"},
    {  250, PROTOCOL_NEHAHRAMOVIE, "NEHAHRAMOVIE"},
    {10000, PROTOCOL_NEHAHRABJP  , "NEHAHRABJP"},
    {10001, PROTOCOL_NEHAHRABJP2 , "NEHAHRABJP2"},
    {10002, PROTOCOL_NEHAHRABJP3 , "NEHAHRABJP3"},
    {    0, PROTOCOL_UNKNOWN     , NULL}
};
 
protocolversion_t Protocol_EnumForName(const char *s)
{
    int i;
    for (i = 0;protocolversioninfo[i].name;i++)
        if (!strcasecmp(s, protocolversioninfo[i].name))
            return protocolversioninfo[i].version;
    return PROTOCOL_UNKNOWN;
}
 
const char *Protocol_NameForEnum(protocolversion_t p)
{
    int i;
    for (i = 0;protocolversioninfo[i].name;i++)
        if (protocolversioninfo[i].version == p)
            return protocolversioninfo[i].name;
    return "UNKNOWN";
}
 
protocolversion_t Protocol_EnumForNumber(int n)
{
    int i;
    for (i = 0;protocolversioninfo[i].name;i++)
        if (protocolversioninfo[i].number == n)
            return protocolversioninfo[i].version;
    return PROTOCOL_UNKNOWN;
}
 
int Protocol_NumberForEnum(protocolversion_t p)
{
    int i;
    for (i = 0;protocolversioninfo[i].name;i++)
        if (protocolversioninfo[i].version == p)
            return protocolversioninfo[i].number;
    return 0;
}
 
void Protocol_Names(char *buffer, size_t buffersize)
{
    int i;
    if (buffersize < 1)
        return;
    buffer[0] = 0;
    for (i = 0;protocolversioninfo[i].name;i++)
    {
        if (i > 0)
            dp_strlcat(buffer, " ", buffersize);
        dp_strlcat(buffer, protocolversioninfo[i].name, buffersize);
    }
}
 
void Protocol_UpdateClientStats(const int *stats)
{
    int i;
    // update the stats array and set deltabits for any changed stats
    for (i = 0;i < MAX_CL_STATS;i++)
    {
        if (host_client->stats[i] != stats[i])
        {
            host_client->statsdeltabits[i >> 3] |= 1 << (i & 7);
            host_client->stats[i] = stats[i];
        }
    }
}
 
// only a few stats are within the 32 stat limit of Quake, and most of them
// are sent every frame in svc_clientdata messages, so we only send the
// remaining ones here
static const int sendquakestats[] =
{
// quake did not send these secrets/monsters stats in this way, but doing so
// allows a mod to increase STAT_TOTALMONSTERS during the game, and ensures
// that STAT_SECRETS and STAT_MONSTERS are always correct (even if a client
// didn't receive an svc_foundsecret or svc_killedmonster), which may be most
// valuable if randomly seeking around in a demo
STAT_TOTALSECRETS, // never changes during game
STAT_TOTALMONSTERS, // changes in some mods
STAT_SECRETS, // this makes svc_foundsecret unnecessary
STAT_MONSTERS, // this makes svc_killedmonster unnecessary
STAT_VIEWHEIGHT, // sent just for FTEQW clients
STAT_VIEWZOOM, // this rarely changes
-1,
};
 
void Protocol_WriteStatsReliable(void)
{
    int i, j;
    if (!host_client->netconnection)
        return;
    // detect changes in stats and write reliable messages
    // this only deals with 32 stats because the older protocols which use
    // this function can only cope with 32 stats,
    // they also do not support svc_updatestatubyte which was introduced in
    // DP6 protocol (except for QW)
    for (j = 0;sendquakestats[j] >= 0;j++)
    {
        i = sendquakestats[j];
        // check if this bit is set
        if (host_client->statsdeltabits[i >> 3] & (1 << (i & 7)))
        {
            host_client->statsdeltabits[i >> 3] -= (1 << (i & 7));
            // send the stat as a byte if possible
            if (sv.protocol == PROTOCOL_QUAKEWORLD)
            {
                if (host_client->stats[i] >= 0 && host_client->stats[i] < 256)
                {
                    MSG_WriteByte(&host_client->netconnection->message, qw_svc_updatestat);
                    MSG_WriteByte(&host_client->netconnection->message, i);
                    MSG_WriteByte(&host_client->netconnection->message, host_client->stats[i]);
                }
                else
                {
                    MSG_WriteByte(&host_client->netconnection->message, qw_svc_updatestatlong);
                    MSG_WriteByte(&host_client->netconnection->message, i);
                    MSG_WriteLong(&host_client->netconnection->message, host_client->stats[i]);
                }
            }
            else
            {
                // this could make use of svc_updatestatubyte in DP6 and later
                // protocols but those protocols do not use this function
                MSG_WriteByte(&host_client->netconnection->message, svc_updatestat);
                MSG_WriteByte(&host_client->netconnection->message, i);
                MSG_WriteLong(&host_client->netconnection->message, host_client->stats[i]);
            }
        }
    }
}