cl_ents_qw.c

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#include "quakedef.h"
#include "protocol.h"
 
static void QW_TranslateEffects(entity_state_t *s, int qweffects)
{
    s->effects = 0;
    s->internaleffects = 0;
    if (qweffects & QW_EF_BRIGHTFIELD)
        s->effects |= EF_BRIGHTFIELD;
    if (qweffects & QW_EF_MUZZLEFLASH)
        s->effects |= EF_MUZZLEFLASH;
    if (qweffects & QW_EF_FLAG1)
    {
        // mimic FTEQW's interpretation of EF_FLAG1 as EF_NODRAW on non-player entities
        if (s->number > cl.maxclients)
            s->effects |= EF_NODRAW;
        else
            s->internaleffects |= INTEF_FLAG1QW;
    }
    if (qweffects & QW_EF_FLAG2)
    {
        // mimic FTEQW's interpretation of EF_FLAG2 as EF_ADDITIVE on non-player entities
        if (s->number > cl.maxclients)
            s->effects |= EF_ADDITIVE;
        else
            s->internaleffects |= INTEF_FLAG2QW;
    }
    if (qweffects & QW_EF_RED)
    {
        if (qweffects & QW_EF_BLUE)
            s->effects |= EF_RED | EF_BLUE;
        else
            s->effects |= EF_RED;
    }
    else if (qweffects & QW_EF_BLUE)
        s->effects |= EF_BLUE;
    else if (qweffects & QW_EF_BRIGHTLIGHT)
        s->effects |= EF_BRIGHTLIGHT;
    else if (qweffects & QW_EF_DIMLIGHT)
        s->effects |= EF_DIMLIGHT;
}
 
extern cvar_t cl_rollangle;
extern cvar_t cl_rollspeed;
 
void EntityStateQW_ReadPlayerUpdate(void)
{
    int slot = MSG_ReadByte(&cl_message);
    int enumber = slot + 1;
    int weaponframe;
    int msec;
    int playerflags;
    int bits;
    entity_state_t *s;
    // look up the entity
    entity_t *ent = cl.entities + enumber;
    vec3_t viewangles;
    vec3_t velocity;
 
    // slide the current state into the previous
    ent->state_previous = ent->state_current;
 
    // read the update
    s = &ent->state_current;
    *s = defaultstate;
    s->active = ACTIVE_NETWORK;
    s->number = enumber;
    s->colormap = enumber;
    playerflags = MSG_ReadShort(&cl_message);
    MSG_ReadVector(&cl_message, s->origin, cls.protocol);
    s->frame = MSG_ReadByte(&cl_message);
 
    VectorClear(viewangles);
    VectorClear(velocity);
 
    if (playerflags & QW_PF_MSEC)
    {
        // time difference between last update this player sent to the server,
        // and last input we sent to the server (this packet is in response to
        // our input, so msec is how long ago the last update of this player
        // entity occurred, compared to our input being received)
        msec = MSG_ReadByte(&cl_message);
    }
    else
        msec = 0;
    if (playerflags & QW_PF_COMMAND)
    {
        bits = MSG_ReadByte(&cl_message);
        if (bits & QW_CM_ANGLE1)
            viewangles[0] = MSG_ReadAngle16i(&cl_message); // cmd->angles[0]
        if (bits & QW_CM_ANGLE2)
            viewangles[1] = MSG_ReadAngle16i(&cl_message); // cmd->angles[1]
        if (bits & QW_CM_ANGLE3)
            viewangles[2] = MSG_ReadAngle16i(&cl_message); // cmd->angles[2]
        if (bits & QW_CM_FORWARD)
            MSG_ReadShort(&cl_message); // cmd->forwardmove
        if (bits & QW_CM_SIDE)
            MSG_ReadShort(&cl_message); // cmd->sidemove
        if (bits & QW_CM_UP)
            MSG_ReadShort(&cl_message); // cmd->upmove
        if (bits & QW_CM_BUTTONS)
            (void) MSG_ReadByte(&cl_message); // cmd->buttons
        if (bits & QW_CM_IMPULSE)
            (void) MSG_ReadByte(&cl_message); // cmd->impulse
        (void) MSG_ReadByte(&cl_message); // cmd->msec
    }
    if (playerflags & QW_PF_VELOCITY1)
        velocity[0] = MSG_ReadShort(&cl_message);
    if (playerflags & QW_PF_VELOCITY2)
        velocity[1] = MSG_ReadShort(&cl_message);
    if (playerflags & QW_PF_VELOCITY3)
        velocity[2] = MSG_ReadShort(&cl_message);
    if (playerflags & QW_PF_MODEL)
        s->modelindex = MSG_ReadByte(&cl_message);
    else
        s->modelindex = cl.qw_modelindex_player;
    if (playerflags & QW_PF_SKINNUM)
        s->skin = MSG_ReadByte(&cl_message);
    if (playerflags & QW_PF_EFFECTS)
        QW_TranslateEffects(s, MSG_ReadByte(&cl_message));
    if (playerflags & QW_PF_WEAPONFRAME)
        weaponframe = MSG_ReadByte(&cl_message);
    else
        weaponframe = 0;
 
    if (enumber == cl.playerentity)
    {
        // if this is an update on our player, update the angles
        VectorCopy(cl.viewangles, viewangles);
    }
 
    // calculate the entity angles from the viewangles
    s->angles[0] = viewangles[0] * -0.0333;
    s->angles[1] = viewangles[1];
    s->angles[2] = 0;
    s->angles[2] = Com_CalcRoll(s->angles, velocity, cl_rollangle.value, cl_rollspeed.value)*4;
 
    // if this is an update on our player, update interpolation state
    if (enumber == cl.playerentity)
    {
        VectorCopy (cl.mpunchangle[0], cl.mpunchangle[1]);
        VectorCopy (cl.mpunchvector[0], cl.mpunchvector[1]);
        VectorCopy (cl.mvelocity[0], cl.mvelocity[1]);
        cl.mviewzoom[1] = cl.mviewzoom[0];
 
        cl.idealpitch = 0;
        cl.mpunchangle[0][0] = 0;
        cl.mpunchangle[0][1] = 0;
        cl.mpunchangle[0][2] = 0;
        cl.mpunchvector[0][0] = 0;
        cl.mpunchvector[0][1] = 0;
        cl.mpunchvector[0][2] = 0;
        cl.mvelocity[0][0] = 0;
        cl.mvelocity[0][1] = 0;
        cl.mvelocity[0][2] = 0;
        cl.mviewzoom[0] = 1;
 
        VectorCopy(velocity, cl.mvelocity[0]);
        cl.stats[STAT_WEAPONFRAME] = weaponframe;
        if (playerflags & QW_PF_GIB)
            cl.stats[STAT_VIEWHEIGHT] = 8;
        else if (playerflags & QW_PF_DEAD)
            cl.stats[STAT_VIEWHEIGHT] = -16;
        else
            cl.stats[STAT_VIEWHEIGHT] = 22;
    }
 
    // set the cl.entities_active flag
    cl.entities_active[enumber] = (s->active == ACTIVE_NETWORK);
    // set the update time
    s->time = cl.mtime[0] - msec * 0.001; // qw has no clock
    // check if we need to update the lerp stuff
    if (s->active == ACTIVE_NETWORK)
        CL_MoveLerpEntityStates(&cl.entities[enumber]);
}
 
static void EntityStateQW_ReadEntityUpdate(entity_state_t *s, int bits)
{
    int qweffects = 0;
    s->active = ACTIVE_NETWORK;
    s->number = bits & 511;
    bits &= ~511;
    if (bits & QW_U_MOREBITS)
        bits |= MSG_ReadByte(&cl_message);
 
    // store the QW_U_SOLID bit here?
 
    if (bits & QW_U_MODEL)
        s->modelindex = MSG_ReadByte(&cl_message);
    if (bits & QW_U_FRAME)
        s->frame = MSG_ReadByte(&cl_message);
    if (bits & QW_U_COLORMAP)
        s->colormap = MSG_ReadByte(&cl_message);
    if (bits & QW_U_SKIN)
        s->skin = MSG_ReadByte(&cl_message);
    if (bits & QW_U_EFFECTS)
        QW_TranslateEffects(s, qweffects = MSG_ReadByte(&cl_message));
    if (bits & QW_U_ORIGIN1)
        s->origin[0] = MSG_ReadCoord13i(&cl_message);
    if (bits & QW_U_ANGLE1)
        s->angles[0] = MSG_ReadAngle8i(&cl_message);
    if (bits & QW_U_ORIGIN2)
        s->origin[1] = MSG_ReadCoord13i(&cl_message);
    if (bits & QW_U_ANGLE2)
        s->angles[1] = MSG_ReadAngle8i(&cl_message);
    if (bits & QW_U_ORIGIN3)
        s->origin[2] = MSG_ReadCoord13i(&cl_message);
    if (bits & QW_U_ANGLE3)
        s->angles[2] = MSG_ReadAngle8i(&cl_message);
 
    if (developer_networkentities.integer >= 2)
    {
        Con_Printf("ReadFields e%i", s->number);
        if (bits & QW_U_MODEL)
            Con_Printf(" U_MODEL %i", s->modelindex);
        if (bits & QW_U_FRAME)
            Con_Printf(" U_FRAME %i", s->frame);
        if (bits & QW_U_COLORMAP)
            Con_Printf(" U_COLORMAP %i", s->colormap);
        if (bits & QW_U_SKIN)
            Con_Printf(" U_SKIN %i", s->skin);
        if (bits & QW_U_EFFECTS)
            Con_Printf(" U_EFFECTS %i", qweffects);
        if (bits & QW_U_ORIGIN1)
            Con_Printf(" U_ORIGIN1 %f", s->origin[0]);
        if (bits & QW_U_ANGLE1)
            Con_Printf(" U_ANGLE1 %f", s->angles[0]);
        if (bits & QW_U_ORIGIN2)
            Con_Printf(" U_ORIGIN2 %f", s->origin[1]);
        if (bits & QW_U_ANGLE2)
            Con_Printf(" U_ANGLE2 %f", s->angles[1]);
        if (bits & QW_U_ORIGIN3)
            Con_Printf(" U_ORIGIN3 %f", s->origin[2]);
        if (bits & QW_U_ANGLE3)
            Con_Printf(" U_ANGLE3 %f", s->angles[2]);
        if (bits & QW_U_SOLID)
            Con_Printf(" U_SOLID");
        Con_Print("\n");
    }
}
 
entityframeqw_database_t *EntityFrameQW_AllocDatabase(mempool_t *pool)
{
    entityframeqw_database_t *d;
    d = (entityframeqw_database_t *)Mem_Alloc(pool, sizeof(*d));
    return d;
}
 
void EntityFrameQW_FreeDatabase(entityframeqw_database_t *d)
{
    Mem_Free(d);
}
 
void EntityFrameQW_CL_ReadFrame(qbool delta)
{
    qbool invalid = false;
    int number, oldsnapindex, newsnapindex, oldindex, newindex, oldnum, newnum;
    entity_t *ent;
    entityframeqw_database_t *d;
    entityframeqw_snapshot_t *oldsnap, *newsnap;
 
    if (!cl.entitydatabaseqw)
        cl.entitydatabaseqw = EntityFrameQW_AllocDatabase(cls.levelmempool);
    d = cl.entitydatabaseqw;
 
    // there is no cls.netcon in demos, so this reading code can't access
    // cls.netcon-> at all...  so cls.qw_incoming_sequence and
    // cls.qw_outgoing_sequence are updated every time the corresponding
    // cls.netcon->qw. variables are updated
    // read the number of this frame to echo back in next input packet
    cl.qw_validsequence = cls.qw_incoming_sequence;
    newsnapindex = cl.qw_validsequence & QW_UPDATE_MASK;
    newsnap = d->snapshot + newsnapindex;
    memset(newsnap, 0, sizeof(*newsnap));
    oldsnap = NULL;
    if (delta)
    {
        number = MSG_ReadByte(&cl_message);
        oldsnapindex = cl.qw_deltasequence[newsnapindex];
        if ((number & QW_UPDATE_MASK) != (oldsnapindex & QW_UPDATE_MASK))
            Con_DPrintf("WARNING: from mismatch\n");
        if (oldsnapindex != -1)
        {
            if (cls.qw_outgoing_sequence - oldsnapindex >= QW_UPDATE_BACKUP-1)
            {
                Con_DPrintf("delta update too old\n");
                newsnap->invalid = invalid = true; // too old
                delta = false;
            }
            oldsnap = d->snapshot + (oldsnapindex & QW_UPDATE_MASK);
        }
        else
            delta = false;
    }
 
    // if we can't decode this frame properly, report that to the server
    if (invalid)
        cl.qw_validsequence = 0;
 
    // read entity numbers until we find a 0x0000
    // (which would be an empty update on world entity, but is actually a terminator)
    newsnap->num_entities = 0;
    oldindex = 0;
    for (;;)
    {
        int word = (unsigned short)MSG_ReadShort(&cl_message);
        if (cl_message.badread)
            return; // just return, the main parser will print an error
        newnum = word == 0 ? 512 : (word & 511);
        oldnum = delta ? (oldindex >= oldsnap->num_entities ? 9999 : oldsnap->entities[oldindex].number) : 9999;
 
        // copy unmodified oldsnap entities
        while (newnum > oldnum) // delta only
        {
            if (developer_networkentities.integer >= 2)
                Con_Printf("copy %i\n", oldnum);
            // copy one of the old entities
            if (newsnap->num_entities >= QW_MAX_PACKET_ENTITIES)
                Host_Error("EntityFrameQW_CL_ReadFrame: newsnap->num_entities == MAX_PACKETENTITIES");
            newsnap->entities[newsnap->num_entities] = oldsnap->entities[oldindex++];
            newsnap->num_entities++;
            oldnum = oldindex >= oldsnap->num_entities ? 9999 : oldsnap->entities[oldindex].number;
        }
 
        if (word == 0)
            break;
 
        if (developer_networkentities.integer >= 2)
        {
            if (word & QW_U_REMOVE)
                Con_Printf("remove %i\n", newnum);
            else if (newnum == oldnum)
                Con_Printf("delta %i\n", newnum);
            else
                Con_Printf("baseline %i\n", newnum);
        }
 
        if (word & QW_U_REMOVE)
        {
            if (newnum != oldnum && !delta && !invalid)
            {
                cl.qw_validsequence = 0;
                Con_Printf(CON_WARN "WARNING: U_REMOVE %i on full update\n", newnum);
            }
        }
        else
        {
            if (newsnap->num_entities >= QW_MAX_PACKET_ENTITIES)
                Host_Error("EntityFrameQW_CL_ReadFrame: newsnap->num_entities == MAX_PACKETENTITIES");
            newsnap->entities[newsnap->num_entities] = (newnum == oldnum) ? oldsnap->entities[oldindex] : cl.entities[newnum].state_baseline;
            EntityStateQW_ReadEntityUpdate(newsnap->entities + newsnap->num_entities, word);
            newsnap->num_entities++;
        }
 
        if (newnum == oldnum)
            oldindex++;
    }
 
    // expand cl.num_entities to include every entity we've seen this game
    newnum = newsnap->num_entities ? newsnap->entities[newsnap->num_entities - 1].number : 1;
    if (cl.num_entities <= newnum)
    {
        cl.num_entities = newnum + 1;
        if (cl.max_entities < newnum + 1)
            CL_ExpandEntities(newnum);
    }
 
    // now update the non-player entities from the snapshot states
    number = cl.maxclients + 1;
    for (newindex = 0;;newindex++)
    {
        newnum = newindex >= newsnap->num_entities ? cl.num_entities : newsnap->entities[newindex].number;
        // kill any missing entities
        for (;number < newnum;number++)
        {
            if (cl.entities_active[number])
            {
                cl.entities_active[number] = false;
                cl.entities[number].state_current.active = ACTIVE_NOT;
            }
        }
        if (number >= cl.num_entities)
            break;
        // update the entity
        ent = &cl.entities[number];
        ent->state_previous = ent->state_current;
        ent->state_current = newsnap->entities[newindex];
        ent->state_current.time = cl.mtime[0];
        CL_MoveLerpEntityStates(ent);
        // the entity lives again...
        cl.entities_active[number] = true;
        number++;
    }
}