]> git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - protocol.c
fix crashes when recursing portals on maps with some bogus leafs (where
[xonotic/darkplaces.git] / protocol.c
index ba64a13c92f06dac01ab6305928ff0e5d2b68f6b..11996d3af59a6b4f18944247909cd7bcdeb3245b 100644 (file)
@@ -9,11 +9,17 @@ entity_state_t defaultstate =
        {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 number; // entity number this state is for
        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; // !
        {0,0,0,0},//unsigned short light[4]; // color*256 (0.00 to 255.996), and radius*1
        0,//unsigned char active; // true if a valid state
        0,//unsigned char lightstyle;
@@ -29,7 +35,7 @@ entity_state_t defaultstate =
        0,//unsigned char tagindex;
        {32, 32, 32},//unsigned char colormod[3];
        // padding to a multiple of 8 bytes (to align the double time)
-       0//unsigned char unused; // !
+       {0,0,0,0,0}//unsigned char unused[5]; // !
 };
 
 // LordHavoc: I own protocol ranges 96, 97, 3500-3599
@@ -53,6 +59,9 @@ protocolversioninfo[] =
        {250, "NEHAHRAMOVIE"},
        {15, "QUAKE"},
        {28, "QW"},
+       {10000, "NEHAHRABJP"},
+       {10001, "NEHAHRABJP2"},
+       {10002, "NEHAHRABJP3"},
        {0, NULL}
 };
 
@@ -149,7 +158,13 @@ void EntityFrameQuake_ReadEntity(int bits)
        s.number = num;
        s.time = cl.mtime[0];
        s.flags = 0;
-       if (bits & U_MODEL)             s.modelindex = (s.modelindex & 0xFF00) | MSG_ReadByte();
+       if (bits & U_MODEL)
+       {
+               if (cls.protocol == PROTOCOL_NEHAHRABJP || cls.protocol == PROTOCOL_NEHAHRABJP2 || cls.protocol == PROTOCOL_NEHAHRABJP3)
+                                                       s.modelindex = (unsigned short) MSG_ReadShort();
+               else
+                                                       s.modelindex = (s.modelindex & 0xFF00) | MSG_ReadByte();
+       }
        if (bits & U_FRAME)             s.frame = (s.frame & 0xFF00) | MSG_ReadByte();
        if (bits & U_COLORMAP)  s.colormap = MSG_ReadByte();
        if (bits & U_SKIN)              s.skin = MSG_ReadByte();
@@ -236,14 +251,14 @@ void EntityFrameQuake_ISeeDeadEntities(void)
 // packet logs and thus if an update is lost it is never repeated, this makes
 // csqc entities useless at the moment.
 
-void EntityFrameCSQC_WriteState (sizebuf_t *msg, int number, qboolean doupdate, qboolean *sectionstarted)
+void EntityFrameCSQC_WriteState (sizebuf_t *msg, int maxsize, int number, qboolean doupdate, qboolean *sectionstarted)
 {
        int version;
        prvm_eval_t *val, *val2;
        version = 0;
        if (doupdate)
        {
-               if (msg->cursize + !*sectionstarted + 2 + 1 + 2 > msg->maxsize)
+               if (msg->cursize + !*sectionstarted + 2 + 1 + 2 > maxsize)
                        return;
                val2 = PRVM_EDICTFIELDVALUE((&prog->edicts[number]), prog->fieldoffsets.Version);
                version = (int)val2->_float;
@@ -285,12 +300,14 @@ void EntityFrameCSQC_WriteState (sizebuf_t *msg, int number, qboolean doupdate,
                        if(!*sectionstarted)
                                MSG_WriteByte(msg, svc_csqcentities);
                        MSG_WriteShort(msg, number);
-                       ((int *)prog->globals.generic)[OFS_PARM0] = sv.writeentitiestoclient_cliententitynumber;
+                       msg->allowoverflow = true;
+                       PRVM_G_INT(OFS_PARM0) = sv.writeentitiestoclient_cliententitynumber;
                        prog->globals.server->self = number;
                        PRVM_ExecuteProgram(val->function, "Null SendEntity\n");
-                       if(prog->globals.generic[OFS_RETURN])
+                       msg->allowoverflow = false;
+                       if(PRVM_G_FLOAT(OFS_RETURN))
                        {
-                               if (msg->cursize + 2 > msg->maxsize)
+                               if (msg->cursize + 2 > maxsize)
                                {
                                        // if the packet no longer has enough room to write the
                                        // final index code that ends the message, rollback to the
@@ -310,6 +327,7 @@ void EntityFrameCSQC_WriteState (sizebuf_t *msg, int number, qboolean doupdate,
                        {
                                // rollback the buffer to its state before the writes
                                msg->cursize = oldcursize;
+                               msg->overflowed = false;
                                // if the function returned FALSE, simply write a remove
                                // this is done by falling through to the remove code below
                                version = 0;
@@ -322,7 +340,7 @@ void EntityFrameCSQC_WriteState (sizebuf_t *msg, int number, qboolean doupdate,
                return;
        // if there isn't enough room to write the remove message, just return, as
        // it will be handled in a later packet
-       if (msg->cursize + !*sectionstarted + 2 + 2 > msg->maxsize)
+       if (msg->cursize + !*sectionstarted + 2 + 2 > maxsize)
                return;
        // first write the message identifier if needed
        if(!*sectionstarted)
@@ -336,7 +354,7 @@ void EntityFrameCSQC_WriteState (sizebuf_t *msg, int number, qboolean doupdate,
 }
 
 //[515]: we use only one array per-client for SendEntity feature
-void EntityFrameCSQC_WriteFrame (sizebuf_t *msg, int numstates, const entity_state_t *states)
+void EntityFrameCSQC_WriteFrame (sizebuf_t *msg, int maxsize, int numstates, const entity_state_t *states)
 {
        int i, num;
        qboolean sectionstarted = false;
@@ -347,7 +365,7 @@ void EntityFrameCSQC_WriteFrame (sizebuf_t *msg, int numstates, const entity_sta
                return;
        // make sure there is enough room to store the svc_csqcentities byte,
        // the terminator (0x0000) and at least one entity update
-       if (msg->cursize + 32 >= msg->maxsize)
+       if (msg->cursize + 32 >= maxsize)
                return;
 
        num = 1;
@@ -356,16 +374,16 @@ void EntityFrameCSQC_WriteFrame (sizebuf_t *msg, int numstates, const entity_sta
                // all entities between the previous entity state and this one are dead
                for (;num < n->number;num++)
                        if(svs.clients[sv.writeentitiestoclient_clientnumber].csqcentityversion[num])
-                               EntityFrameCSQC_WriteState(msg, num, false, &sectionstarted);
+                               EntityFrameCSQC_WriteState(msg, maxsize, num, false, &sectionstarted);
                // update this entity
-               EntityFrameCSQC_WriteState(msg, num, true, &sectionstarted);
+               EntityFrameCSQC_WriteState(msg, maxsize, num, true, &sectionstarted);
                // advance to next entity so the next iteration doesn't immediately remove it
                num++;
        }
        // all remaining entities are dead
        for (;num < prog->num_edicts;num++)
                if(svs.clients[sv.writeentitiestoclient_clientnumber].csqcentityversion[num])
-                       EntityFrameCSQC_WriteState(msg, num, false, &sectionstarted);
+                       EntityFrameCSQC_WriteState(msg, maxsize, num, false, &sectionstarted);
        if (sectionstarted)
        {
                // write index 0 to end the update (0 is never used by real entities)
@@ -452,7 +470,7 @@ void Protocol_WriteStatsReliable(void)
 }
 
 
-void EntityFrameQuake_WriteFrame(sizebuf_t *msg, int numstates, const entity_state_t *states)
+void EntityFrameQuake_WriteFrame(sizebuf_t *msg, int maxsize, int numstates, const entity_state_t *states)
 {
        const entity_state_t *s;
        entity_state_t baseline;
@@ -521,7 +539,7 @@ void EntityFrameQuake_WriteFrame(sizebuf_t *msg, int numstates, const entity_sta
                if (baseline.modelindex != s->modelindex)
                {
                        bits |= U_MODEL;
-                       if (s->modelindex & 0xFF00)
+                       if ((s->modelindex & 0xFF00) && sv.protocol != PROTOCOL_NEHAHRABJP && sv.protocol != PROTOCOL_NEHAHRABJP2 && sv.protocol != PROTOCOL_NEHAHRABJP3)
                                bits |= U_MODEL2;
                }
                if (baseline.alpha != s->alpha)
@@ -561,7 +579,13 @@ void EntityFrameQuake_WriteFrame(sizebuf_t *msg, int numstates, const entity_sta
                if (bits & U_LONGENTITY)        MSG_WriteShort(&buf, s->number);
                else                                            MSG_WriteByte(&buf, s->number);
 
-               if (bits & U_MODEL)                     MSG_WriteByte(&buf, s->modelindex);
+               if (bits & U_MODEL)
+               {
+                       if (sv.protocol == PROTOCOL_NEHAHRABJP || sv.protocol == PROTOCOL_NEHAHRABJP2 || sv.protocol == PROTOCOL_NEHAHRABJP3)
+                               MSG_WriteShort(&buf, s->modelindex);
+                       else
+                               MSG_WriteByte(&buf, s->modelindex);
+               }
                if (bits & U_FRAME)                     MSG_WriteByte(&buf, s->frame);
                if (bits & U_COLORMAP)          MSG_WriteByte(&buf, s->colormap);
                if (bits & U_SKIN)                      MSG_WriteByte(&buf, s->skin);
@@ -598,7 +622,7 @@ void EntityFrameQuake_WriteFrame(sizebuf_t *msg, int numstates, const entity_sta
                }
 
                // if the commit is full, we're done this frame
-               if (msg->cursize + buf.cursize > msg->maxsize)
+               if (msg->cursize + buf.cursize > maxsize)
                {
                        // next frame we will continue where we left off
                        break;
@@ -1093,7 +1117,7 @@ void EntityFrame_AddFrame(entityframe_database_t *d, vec3_t eye, int framenum, i
 }
 
 // (server) writes a frame to network stream
-void EntityFrame_WriteFrame(sizebuf_t *msg, entityframe_database_t *d, int numstates, const entity_state_t *states, int viewentnum)
+void EntityFrame_WriteFrame(sizebuf_t *msg, int maxsize, entityframe_database_t *d, int numstates, const entity_state_t *states, int viewentnum)
 {
        int i, onum, number;
        entity_frame_t *o = &d->deltaframe;
@@ -1569,7 +1593,7 @@ void EntityFrame4_CL_ReadFrame(void)
                EntityFrame4_ResetDatabase(d);
 }
 
-void EntityFrame4_WriteFrame(sizebuf_t *msg, entityframe4_database_t *d, int numstates, const entity_state_t *states)
+void EntityFrame4_WriteFrame(sizebuf_t *msg, int maxsize, entityframe4_database_t *d, int numstates, const entity_state_t *states)
 {
        const entity_state_t *e, *s;
        entity_state_t inactiveentitystate;
@@ -1579,7 +1603,7 @@ void EntityFrame4_WriteFrame(sizebuf_t *msg, entityframe4_database_t *d, int num
        prvm_eval_t *val;
 
        // if there isn't enough space to accomplish anything, skip it
-       if (msg->cursize + 24 > msg->maxsize)
+       if (msg->cursize + 24 > maxsize)
                return;
 
        // prepare the buffer
@@ -1649,7 +1673,7 @@ void EntityFrame4_WriteFrame(sizebuf_t *msg, entityframe4_database_t *d, int num
                        }
                }
                // if the commit is full, we're done this frame
-               if (msg->cursize + buf.cursize > msg->maxsize - 4)
+               if (msg->cursize + buf.cursize > maxsize - 4)
                {
                        // next frame we will continue where we left off
                        break;
@@ -1784,8 +1808,17 @@ void EntityState5_WriteUpdate(int number, const entity_state_t *s, int changedbi
        else
        {
                bits = changedbits;
-               if ((bits & E5_ORIGIN) && ((s->flags & RENDER_EXTERIORMODEL) || s->origin[0] < -4096 || s->origin[0] >= 4096 || s->origin[1] < -4096 || s->origin[1] >= 4096 || s->origin[2] < -4096 || s->origin[2] >= 4096))
+               if ((bits & E5_ORIGIN) && ((s->flags & RENDER_EXTERIORMODEL) || s->origin[0] <= -4096.0625 || s->origin[0] >= 4095.9375 || s->origin[1] <= -4096.0625 || s->origin[1] >= 4095.9375 || s->origin[2] <= -4096.0625 || s->origin[2] >= 4095.9375))
                        bits |= E5_ORIGIN32;
+                       // possible values:
+                       //   negative origin:
+                       //     (int)(f * 8 - 0.5) >= -32768
+                       //          (f * 8 - 0.5) >  -32769
+                       //           f            >  -4096.0625
+                       //   positive origin:
+                       //     (int)(f * 8 + 0.5) <=  32767
+                       //          (f * 8 + 0.5) <   32768
+                       //           f * 8 + 0.5) <   4095.9375
                if ((bits & E5_ANGLES) && !(s->flags & RENDER_LOWPRECISION))
                        bits |= E5_ANGLES16;
                if ((bits & E5_MODEL) && s->modelindex >= 256)
@@ -2214,7 +2247,7 @@ void EntityFrame5_LostFrame(entityframe5_database_t *d, int framenum)
                                {
                                        d->deltabits[s->number] |= bits;
                                        // if it was a very important update, set priority higher
-                                       if (bits & (E5_FULLUPDATE | E5_ATTACHMENT | E5_MODEL || E5_COLORMAP))
+                                       if (bits & (E5_FULLUPDATE | E5_ATTACHMENT | E5_MODEL | E5_COLORMAP))
                                                d->priorities[s->number] = max(d->priorities[s->number], 4);
                                        else
                                                d->priorities[s->number] = max(d->priorities[s->number], 1);
@@ -2247,7 +2280,7 @@ void EntityFrame5_AckFrame(entityframe5_database_t *d, int framenum)
                        d->packetlog[i].packetnumber = 0;
 }
 
-void EntityFrame5_WriteFrame(sizebuf_t *msg, entityframe5_database_t *d, int numstates, const entity_state_t *states, int viewentnum, int movesequence)
+void EntityFrame5_WriteFrame(sizebuf_t *msg, int maxsize, entityframe5_database_t *d, int numstates, const entity_state_t *states, int viewentnum, int movesequence)
 {
        const entity_state_t *n;
        int i, num, l, framenum, packetlognumber, priority;
@@ -2357,9 +2390,9 @@ void EntityFrame5_WriteFrame(sizebuf_t *msg, entityframe5_database_t *d, int num
        packetlog->packetnumber = framenum;
        packetlog->numstates = 0;
        // write stat updates
-       if (sv.protocol != PROTOCOL_QUAKE && sv.protocol != PROTOCOL_QUAKEDP && sv.protocol != PROTOCOL_NEHAHRAMOVIE && sv.protocol != PROTOCOL_DARKPLACES1 && sv.protocol != PROTOCOL_DARKPLACES2 && sv.protocol != PROTOCOL_DARKPLACES3 && sv.protocol != PROTOCOL_DARKPLACES4 && sv.protocol != PROTOCOL_DARKPLACES5)
+       if (sv.protocol != PROTOCOL_QUAKE && sv.protocol != PROTOCOL_QUAKEDP && sv.protocol != PROTOCOL_NEHAHRAMOVIE && sv.protocol != PROTOCOL_NEHAHRABJP && sv.protocol != PROTOCOL_NEHAHRABJP2 && sv.protocol != PROTOCOL_NEHAHRABJP3 && sv.protocol != PROTOCOL_DARKPLACES1 && sv.protocol != PROTOCOL_DARKPLACES2 && sv.protocol != PROTOCOL_DARKPLACES3 && sv.protocol != PROTOCOL_DARKPLACES4 && sv.protocol != PROTOCOL_DARKPLACES5)
        {
-               for (i = 0;i < MAX_CL_STATS && msg->cursize + 6 + 11 <= msg->maxsize;i++)
+               for (i = 0;i < MAX_CL_STATS && msg->cursize + 6 + 11 <= maxsize;i++)
                {
                        if (host_client->statsdeltabits[i>>3] & (1<<(i&7)))
                        {
@@ -2399,7 +2432,7 @@ void EntityFrame5_WriteFrame(sizebuf_t *msg, entityframe5_database_t *d, int num
                        buf.cursize = 0;
                        EntityState5_WriteUpdate(num, n, d->deltabits[num], &buf);
                        // if the entity won't fit, try the next one
-                       if (msg->cursize + buf.cursize + 2 > msg->maxsize)
+                       if (msg->cursize + buf.cursize + 2 > maxsize)
                                continue;
                        // write entity to the packet
                        SZ_Write(msg, buf.data, buf.cursize);