]> de.git.xonotic.org Git - xonotic/darkplaces.git/blobdiff - protocol.c
reduced client memory usage by 29MB by making cl_max_entities dynamic (starts out...
[xonotic/darkplaces.git] / protocol.c
index 413db775bd9522dd925a8d8a0154adb7b568dad9..176ae44e90a89a032785edd0b2d2602a426a5de2 100644 (file)
 
 #include "quakedef.h"
 
-void ClearStateToDefault(entity_state_t *s)
-{
-       s->active = 0;
-       s->time = 0;
-       VectorClear(s->origin);
-       VectorClear(s->angles);
-       s->effects = 0;
-       s->modelindex = 0;
-       s->frame = 0;
-       s->colormap = 0;
-       s->skin = 0;
-       s->alpha = 255;
-       s->scale = 16;
-       s->glowsize = 0;
-       s->glowcolor = 254;
-       s->flags = 0;
+// this is 80 bytes
+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 origin[3];
+       {0,0,0},//float angles[3];
+       0,//int number; // entity number this state is for
+       0,//int effects;
+       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;
+       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 tagindex;
+       {32, 32, 32},//unsigned char colormod[3];
+       // padding to a multiple of 8 bytes (to align the double time)
+       {0,0}//unsigned char unused[2]; // !
+};
+
+// keep track of quake entities because they need to be killed if they get stale
+int cl_lastquakeentity = 0;
+qbyte cl_isquakeentity[MAX_EDICTS];
+
+void EntityFrameQuake_ReadEntity(int bits)
+{
+       int num;
+       entity_t *ent;
+       entity_state_t s;
+
+       if (bits & U_MOREBITS)
+               bits |= (MSG_ReadByte()<<8);
+       if ((bits & U_EXTEND1) && cl.protocol != PROTOCOL_NEHAHRAMOVIE)
+       {
+               bits |= MSG_ReadByte() << 16;
+               if (bits & U_EXTEND2)
+                       bits |= MSG_ReadByte() << 24;
+       }
+
+       if (bits & U_LONGENTITY)
+               num = (unsigned short) MSG_ReadShort ();
+       else
+               num = MSG_ReadByte ();
+
+       if (num >= MAX_EDICTS)
+               Host_Error("EntityFrameQuake_ReadEntity: entity number (%i) >= MAX_EDICTS (%i)\n", num, MAX_EDICTS);
+       if (num < 1)
+               Host_Error("EntityFrameQuake_ReadEntity: invalid entity number (%i)\n", num);
+
+       if (cl_num_entities <= num)
+       {
+               cl_num_entities = num + 1;
+               if (num >= cl_max_entities)
+                       CL_ExpandEntities(num);
+       }
+
+       ent = cl_entities + num;
+
+       // note: this inherits the 'active' state of the baseline chosen
+       // (state_baseline is always active, state_current may not be active if
+       // the entity was missing in the last frame)
+       if (bits & U_DELTA)
+               s = ent->state_current;
+       else
+       {
+               s = ent->state_baseline;
+               s.active = true;
+       }
+
+       cl_isquakeentity[num] = true;
+       if (cl_lastquakeentity < num)
+               cl_lastquakeentity = num;
+       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_FRAME)             s.frame = (s.frame & 0xFF00) | MSG_ReadByte();
+       if (bits & U_COLORMAP)  s.colormap = MSG_ReadByte();
+       if (bits & U_SKIN)              s.skin = MSG_ReadByte();
+       if (bits & U_EFFECTS)   s.effects = (s.effects & 0xFF00) | MSG_ReadByte();
+       if (bits & U_ORIGIN1)   s.origin[0] = MSG_ReadCoord(cl.protocol);
+       if (bits & U_ANGLE1)    s.angles[0] = MSG_ReadAngle(cl.protocol);
+       if (bits & U_ORIGIN2)   s.origin[1] = MSG_ReadCoord(cl.protocol);
+       if (bits & U_ANGLE2)    s.angles[1] = MSG_ReadAngle(cl.protocol);
+       if (bits & U_ORIGIN3)   s.origin[2] = MSG_ReadCoord(cl.protocol);
+       if (bits & U_ANGLE3)    s.angles[2] = MSG_ReadAngle(cl.protocol);
+       if (bits & U_STEP)              s.flags |= RENDER_STEP;
+       if (bits & U_ALPHA)             s.alpha = MSG_ReadByte();
+       if (bits & U_SCALE)             s.scale = MSG_ReadByte();
+       if (bits & U_EFFECTS2)  s.effects = (s.effects & 0x00FF) | (MSG_ReadByte() << 8);
+       if (bits & U_GLOWSIZE)  s.glowsize = MSG_ReadByte();
+       if (bits & U_GLOWCOLOR) s.glowcolor = MSG_ReadByte();
+       if (bits & U_COLORMOD)  {int c = MSG_ReadByte();s.colormod[0] = (qbyte)(((c >> 5) & 7) * (32.0f / 7.0f));s.colormod[1] = (qbyte)(((c >> 2) & 7) * (32.0f / 7.0f));s.colormod[2] = (qbyte)((c & 3) * (32.0f / 3.0f));}
+       if (bits & U_GLOWTRAIL) s.flags |= RENDER_GLOWTRAIL;
+       if (bits & U_FRAME2)    s.frame = (s.frame & 0x00FF) | (MSG_ReadByte() << 8);
+       if (bits & U_MODEL2)    s.modelindex = (s.modelindex & 0x00FF) | (MSG_ReadByte() << 8);
+       if (bits & U_VIEWMODEL) s.flags |= RENDER_VIEWMODEL;
+       if (bits & U_EXTERIORMODEL)     s.flags |= RENDER_EXTERIORMODEL;
+
+       // LordHavoc: to allow playback of the Nehahra movie
+       if (cl.protocol == PROTOCOL_NEHAHRAMOVIE && (bits & U_EXTEND1))
+       {
+               // LordHavoc: evil format
+               int i = MSG_ReadFloat();
+               int j = MSG_ReadFloat() * 255.0f;
+               if (i == 2)
+               {
+                       i = MSG_ReadFloat();
+                       if (i)
+                               s.effects |= EF_FULLBRIGHT;
+               }
+               if (j < 0)
+                       s.alpha = 0;
+               else if (j == 0 || j >= 255)
+                       s.alpha = 255;
+               else
+                       s.alpha = j;
+       }
+
+       ent->state_previous = ent->state_current;
+       ent->state_current = s;
+       if (ent->state_current.active)
+       {
+               CL_MoveLerpEntityStates(ent);
+               cl_entities_active[ent->state_current.number] = true;
+       }
+
+       if (msg_badread)
+               Host_Error("EntityFrameQuake_ReadEntity: read error\n");
+}
+
+void EntityFrameQuake_ISeeDeadEntities(void)
+{
+       int num, lastentity;
+       if (cl_lastquakeentity == 0)
+               return;
+       lastentity = cl_lastquakeentity;
+       cl_lastquakeentity = 0;
+       for (num = 0;num <= lastentity;num++)
+       {
+               if (cl_isquakeentity[num])
+               {
+                       if (cl_entities_active[num] && cl_entities[num].state_current.time == cl.mtime[0])
+                       {
+                               cl_isquakeentity[num] = true;
+                               cl_lastquakeentity = num;
+                       }
+                       else
+                       {
+                               cl_isquakeentity[num] = false;
+                               cl_entities_active[num] = false;
+                               cl_entities[num].state_current = defaultstate;
+                               cl_entities[num].state_current.number = num;
+                       }
+               }
+       }
+}
+
+void EntityFrameQuake_WriteFrame(sizebuf_t *msg, int numstates, const entity_state_t *states)
+{
+       const entity_state_t *s;
+       entity_state_t baseline;
+       int i, bits;
+       sizebuf_t buf;
+       qbyte data[128];
+
+       // prepare the buffer
+       memset(&buf, 0, sizeof(buf));
+       buf.data = data;
+       buf.maxsize = sizeof(data);
+
+       for (i = 0, s = states;i < numstates;i++, s++)
+       {
+               // prepare the buffer
+               SZ_Clear(&buf);
+
+// send an update
+               bits = 0;
+               if (s->number >= 256)
+                       bits |= U_LONGENTITY;
+               if (s->flags & RENDER_STEP)
+                       bits |= U_STEP;
+               if (s->flags & RENDER_VIEWMODEL)
+                       bits |= U_VIEWMODEL;
+               if (s->flags & RENDER_GLOWTRAIL)
+                       bits |= U_GLOWTRAIL;
+               if (s->flags & RENDER_EXTERIORMODEL)
+                       bits |= U_EXTERIORMODEL;
+
+               // LordHavoc: old stuff, but rewritten to have more exact tolerances
+               baseline = sv.edicts[s->number].e->baseline;
+               if (baseline.origin[0] != s->origin[0])
+                       bits |= U_ORIGIN1;
+               if (baseline.origin[1] != s->origin[1])
+                       bits |= U_ORIGIN2;
+               if (baseline.origin[2] != s->origin[2])
+                       bits |= U_ORIGIN3;
+               if (baseline.angles[0] != s->angles[0])
+                       bits |= U_ANGLE1;
+               if (baseline.angles[1] != s->angles[1])
+                       bits |= U_ANGLE2;
+               if (baseline.angles[2] != s->angles[2])
+                       bits |= U_ANGLE3;
+               if (baseline.colormap != s->colormap)
+                       bits |= U_COLORMAP;
+               if (baseline.skin != s->skin)
+                       bits |= U_SKIN;
+               if (baseline.frame != s->frame)
+               {
+                       bits |= U_FRAME;
+                       if (s->frame & 0xFF00)
+                               bits |= U_FRAME2;
+               }
+               if (baseline.effects != s->effects)
+               {
+                       bits |= U_EFFECTS;
+                       if (s->effects & 0xFF00)
+                               bits |= U_EFFECTS2;
+               }
+               if (baseline.modelindex != s->modelindex)
+               {
+                       bits |= U_MODEL;
+                       if (s->modelindex & 0xFF00)
+                               bits |= U_MODEL2;
+               }
+               if (baseline.alpha != s->alpha)
+                       bits |= U_ALPHA;
+               if (baseline.scale != s->scale)
+                       bits |= U_SCALE;
+               if (baseline.glowsize != s->glowsize)
+                       bits |= U_GLOWSIZE;
+               if (baseline.glowcolor != s->glowcolor)
+                       bits |= U_GLOWCOLOR;
+
+               // if extensions are disabled, clear the relevant update flags
+               if (sv.netquakecompatible)
+                       bits &= 0x7FFF;
+
+               // write the message
+               if (bits >= 16777216)
+                       bits |= U_EXTEND2;
+               if (bits >= 65536)
+                       bits |= U_EXTEND1;
+               if (bits >= 256)
+                       bits |= U_MOREBITS;
+               bits |= U_SIGNAL;
+
+               MSG_WriteByte (&buf, bits);
+               if (bits & U_MOREBITS)          MSG_WriteByte(&buf, bits>>8);
+               if (bits & U_EXTEND1)           MSG_WriteByte(&buf, bits>>16);
+               if (bits & U_EXTEND2)           MSG_WriteByte(&buf, bits>>24);
+               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_FRAME)                     MSG_WriteByte(&buf, s->frame);
+               if (bits & U_COLORMAP)          MSG_WriteByte(&buf, s->colormap);
+               if (bits & U_SKIN)                      MSG_WriteByte(&buf, s->skin);
+               if (bits & U_EFFECTS)           MSG_WriteByte(&buf, s->effects);
+               if (bits & U_ORIGIN1)           MSG_WriteCoord(&buf, s->origin[0], sv.protocol);
+               if (bits & U_ANGLE1)            MSG_WriteAngle(&buf, s->angles[0], sv.protocol);
+               if (bits & U_ORIGIN2)           MSG_WriteCoord(&buf, s->origin[1], sv.protocol);
+               if (bits & U_ANGLE2)            MSG_WriteAngle(&buf, s->angles[1], sv.protocol);
+               if (bits & U_ORIGIN3)           MSG_WriteCoord(&buf, s->origin[2], sv.protocol);
+               if (bits & U_ANGLE3)            MSG_WriteAngle(&buf, s->angles[2], sv.protocol);
+               if (bits & U_ALPHA)                     MSG_WriteByte(&buf, s->alpha);
+               if (bits & U_SCALE)                     MSG_WriteByte(&buf, s->scale);
+               if (bits & U_EFFECTS2)          MSG_WriteByte(&buf, s->effects >> 8);
+               if (bits & U_GLOWSIZE)          MSG_WriteByte(&buf, s->glowsize);
+               if (bits & U_GLOWCOLOR)         MSG_WriteByte(&buf, s->glowcolor);
+               if (bits & U_COLORMOD)          {int c = ((int)bound(0, s->colormod[0] * (7.0f / 32.0f), 7) << 5) | ((int)bound(0, s->colormod[0] * (7.0f / 32.0f), 7) << 2) | ((int)bound(0, s->colormod[0] * (3.0f / 32.0f), 3) << 0);MSG_WriteByte(&buf, c);}
+               if (bits & U_FRAME2)            MSG_WriteByte(&buf, s->frame >> 8);
+               if (bits & U_MODEL2)            MSG_WriteByte(&buf, s->modelindex >> 8);
+
+               // if the commit is full, we're done this frame
+               if (msg->cursize + buf.cursize > msg->maxsize)
+               {
+                       // next frame we will continue where we left off
+                       break;
+               }
+               // write the message to the packet
+               SZ_Write(msg, buf.data, buf.cursize);
+       }
+}
+
+int EntityState_DeltaBits(const entity_state_t *o, const entity_state_t *n)
+{
+       unsigned int bits;
+       // if o is not active, delta from default
+       if (!o->active)
+               o = &defaultstate;
+       bits = 0;
+       if (fabs(n->origin[0] - o->origin[0]) > (1.0f / 256.0f))
+               bits |= E_ORIGIN1;
+       if (fabs(n->origin[1] - o->origin[1]) > (1.0f / 256.0f))
+               bits |= E_ORIGIN2;
+       if (fabs(n->origin[2] - o->origin[2]) > (1.0f / 256.0f))
+               bits |= E_ORIGIN3;
+       if ((qbyte) (n->angles[0] * (256.0f / 360.0f)) != (qbyte) (o->angles[0] * (256.0f / 360.0f)))
+               bits |= E_ANGLE1;
+       if ((qbyte) (n->angles[1] * (256.0f / 360.0f)) != (qbyte) (o->angles[1] * (256.0f / 360.0f)))
+               bits |= E_ANGLE2;
+       if ((qbyte) (n->angles[2] * (256.0f / 360.0f)) != (qbyte) (o->angles[2] * (256.0f / 360.0f)))
+               bits |= E_ANGLE3;
+       if ((n->modelindex ^ o->modelindex) & 0x00FF)
+               bits |= E_MODEL1;
+       if ((n->modelindex ^ o->modelindex) & 0xFF00)
+               bits |= E_MODEL2;
+       if ((n->frame ^ o->frame) & 0x00FF)
+               bits |= E_FRAME1;
+       if ((n->frame ^ o->frame) & 0xFF00)
+               bits |= E_FRAME2;
+       if ((n->effects ^ o->effects) & 0x00FF)
+               bits |= E_EFFECTS1;
+       if ((n->effects ^ o->effects) & 0xFF00)
+               bits |= E_EFFECTS2;
+       if (n->colormap != o->colormap)
+               bits |= E_COLORMAP;
+       if (n->skin != o->skin)
+               bits |= E_SKIN;
+       if (n->alpha != o->alpha)
+               bits |= E_ALPHA;
+       if (n->scale != o->scale)
+               bits |= E_SCALE;
+       if (n->glowsize != o->glowsize)
+               bits |= E_GLOWSIZE;
+       if (n->glowcolor != o->glowcolor)
+               bits |= E_GLOWCOLOR;
+       if (n->flags != o->flags)
+               bits |= E_FLAGS;
+       if (n->tagindex != o->tagindex || n->tagentity != o->tagentity)
+               bits |= E_TAGATTACHMENT;
+       if (n->light[0] != o->light[0] || n->light[1] != o->light[1] || n->light[2] != o->light[2] || n->light[3] != o->light[3])
+               bits |= E_LIGHT;
+       if (n->lightstyle != o->lightstyle)
+               bits |= E_LIGHTSTYLE;
+       if (n->lightpflags != o->lightpflags)
+               bits |= E_LIGHTPFLAGS;
+
+       if (bits)
+       {
+               if (bits &  0xFF000000)
+                       bits |= 0x00800000;
+               if (bits &  0x00FF0000)
+                       bits |= 0x00008000;
+               if (bits &  0x0000FF00)
+                       bits |= 0x00000080;
+       }
+       return bits;
+}
+
+void EntityState_WriteExtendBits(sizebuf_t *msg, unsigned int bits)
+{
+       MSG_WriteByte(msg, bits & 0xFF);
+       if (bits & 0x00000080)
+       {
+               MSG_WriteByte(msg, (bits >> 8) & 0xFF);
+               if (bits & 0x00008000)
+               {
+                       MSG_WriteByte(msg, (bits >> 16) & 0xFF);
+                       if (bits & 0x00800000)
+                               MSG_WriteByte(msg, (bits >> 24) & 0xFF);
+               }
+       }
+}
+
+void EntityState_WriteFields(const entity_state_t *ent, sizebuf_t *msg, unsigned int bits)
+{
+       if (sv.protocol == PROTOCOL_DARKPLACES2)
+       {
+               if (bits & E_ORIGIN1)
+                       MSG_WriteCoord16i(msg, ent->origin[0]);
+               if (bits & E_ORIGIN2)
+                       MSG_WriteCoord16i(msg, ent->origin[1]);
+               if (bits & E_ORIGIN3)
+                       MSG_WriteCoord16i(msg, ent->origin[2]);
+       }
+       else if (sv.protocol == PROTOCOL_DARKPLACES1 || sv.protocol == PROTOCOL_DARKPLACES3 || sv.protocol == PROTOCOL_DARKPLACES4 || sv.protocol == PROTOCOL_DARKPLACES5 || sv.protocol == PROTOCOL_DARKPLACES6)
+       {
+               // LordHavoc: have to write flags first, as they can modify protocol
+               if (bits & E_FLAGS)
+                       MSG_WriteByte(msg, ent->flags);
+               if (ent->flags & RENDER_LOWPRECISION)
+               {
+                       if (bits & E_ORIGIN1)
+                               MSG_WriteCoord16i(msg, ent->origin[0]);
+                       if (bits & E_ORIGIN2)
+                               MSG_WriteCoord16i(msg, ent->origin[1]);
+                       if (bits & E_ORIGIN3)
+                               MSG_WriteCoord16i(msg, ent->origin[2]);
+               }
+               else
+               {
+                       if (bits & E_ORIGIN1)
+                               MSG_WriteCoord32f(msg, ent->origin[0]);
+                       if (bits & E_ORIGIN2)
+                               MSG_WriteCoord32f(msg, ent->origin[1]);
+                       if (bits & E_ORIGIN3)
+                               MSG_WriteCoord32f(msg, ent->origin[2]);
+               }
+       }
+       if ((sv.protocol == PROTOCOL_DARKPLACES5 || sv.protocol == PROTOCOL_DARKPLACES6) && !(ent->flags & RENDER_LOWPRECISION))
+       {
+               if (bits & E_ANGLE1)
+                       MSG_WriteAngle16i(msg, ent->angles[0]);
+               if (bits & E_ANGLE2)
+                       MSG_WriteAngle16i(msg, ent->angles[1]);
+               if (bits & E_ANGLE3)
+                       MSG_WriteAngle16i(msg, ent->angles[2]);
+       }
+       else
+       {
+               if (bits & E_ANGLE1)
+                       MSG_WriteAngle8i(msg, ent->angles[0]);
+               if (bits & E_ANGLE2)
+                       MSG_WriteAngle8i(msg, ent->angles[1]);
+               if (bits & E_ANGLE3)
+                       MSG_WriteAngle8i(msg, ent->angles[2]);
+       }
+       if (bits & E_MODEL1)
+               MSG_WriteByte(msg, ent->modelindex & 0xFF);
+       if (bits & E_MODEL2)
+               MSG_WriteByte(msg, (ent->modelindex >> 8) & 0xFF);
+       if (bits & E_FRAME1)
+               MSG_WriteByte(msg, ent->frame & 0xFF);
+       if (bits & E_FRAME2)
+               MSG_WriteByte(msg, (ent->frame >> 8) & 0xFF);
+       if (bits & E_EFFECTS1)
+               MSG_WriteByte(msg, ent->effects & 0xFF);
+       if (bits & E_EFFECTS2)
+               MSG_WriteByte(msg, (ent->effects >> 8) & 0xFF);
+       if (bits & E_COLORMAP)
+               MSG_WriteByte(msg, ent->colormap);
+       if (bits & E_SKIN)
+               MSG_WriteByte(msg, ent->skin);
+       if (bits & E_ALPHA)
+               MSG_WriteByte(msg, ent->alpha);
+       if (bits & E_SCALE)
+               MSG_WriteByte(msg, ent->scale);
+       if (bits & E_GLOWSIZE)
+               MSG_WriteByte(msg, ent->glowsize);
+       if (bits & E_GLOWCOLOR)
+               MSG_WriteByte(msg, ent->glowcolor);
+       if (sv.protocol == PROTOCOL_DARKPLACES2)
+               if (bits & E_FLAGS)
+                       MSG_WriteByte(msg, ent->flags);
+       if (bits & E_TAGATTACHMENT)
+       {
+               MSG_WriteShort(msg, ent->tagentity);
+               MSG_WriteByte(msg, ent->tagindex);
+       }
+       if (bits & E_LIGHT)
+       {
+               MSG_WriteShort(msg, ent->light[0]);
+               MSG_WriteShort(msg, ent->light[1]);
+               MSG_WriteShort(msg, ent->light[2]);
+               MSG_WriteShort(msg, ent->light[3]);
+       }
+       if (bits & E_LIGHTSTYLE)
+               MSG_WriteByte(msg, ent->lightstyle);
+       if (bits & E_LIGHTPFLAGS)
+               MSG_WriteByte(msg, ent->lightpflags);
+}
+
+void EntityState_WriteUpdate(const entity_state_t *ent, sizebuf_t *msg, const entity_state_t *delta)
+{
+       unsigned int bits;
+       if (ent->active)
+       {
+               // entity is active, check for changes from the delta
+               if ((bits = EntityState_DeltaBits(delta, ent)))
+               {
+                       // write the update number, bits, and fields
+                       MSG_WriteShort(msg, ent->number);
+                       EntityState_WriteExtendBits(msg, bits);
+                       EntityState_WriteFields(ent, msg, bits);
+               }
+       }
+       else
+       {
+               // entity is inactive, check if the delta was active
+               if (delta->active)
+               {
+                       // write the remove number
+                       MSG_WriteShort(msg, ent->number | 0x8000);
+               }
+       }
+}
+
+int EntityState_ReadExtendBits(void)
+{
+       unsigned int bits;
+       bits = MSG_ReadByte();
+       if (bits & 0x00000080)
+       {
+               bits |= MSG_ReadByte() << 8;
+               if (bits & 0x00008000)
+               {
+                       bits |= MSG_ReadByte() << 16;
+                       if (bits & 0x00800000)
+                               bits |= MSG_ReadByte() << 24;
+               }
+       }
+       return bits;
+}
+
+void EntityState_ReadFields(entity_state_t *e, unsigned int bits)
+{
+       if (cl.protocol == PROTOCOL_DARKPLACES2)
+       {
+               if (bits & E_ORIGIN1)
+                       e->origin[0] = MSG_ReadCoord16i();
+               if (bits & E_ORIGIN2)
+                       e->origin[1] = MSG_ReadCoord16i();
+               if (bits & E_ORIGIN3)
+                       e->origin[2] = MSG_ReadCoord16i();
+       }
+       else if (cl.protocol == PROTOCOL_DARKPLACES1 || cl.protocol == PROTOCOL_DARKPLACES3 || cl.protocol == PROTOCOL_DARKPLACES4 || cl.protocol == PROTOCOL_DARKPLACES5 || cl.protocol == PROTOCOL_DARKPLACES6)
+       {
+               if (bits & E_FLAGS)
+                       e->flags = MSG_ReadByte();
+               if (e->flags & RENDER_LOWPRECISION)
+               {
+                       if (bits & E_ORIGIN1)
+                               e->origin[0] = MSG_ReadCoord16i();
+                       if (bits & E_ORIGIN2)
+                               e->origin[1] = MSG_ReadCoord16i();
+                       if (bits & E_ORIGIN3)
+                               e->origin[2] = MSG_ReadCoord16i();
+               }
+               else
+               {
+                       if (bits & E_ORIGIN1)
+                               e->origin[0] = MSG_ReadCoord32f();
+                       if (bits & E_ORIGIN2)
+                               e->origin[1] = MSG_ReadCoord32f();
+                       if (bits & E_ORIGIN3)
+                               e->origin[2] = MSG_ReadCoord32f();
+               }
+       }
+       else
+               Host_Error("EntityState_ReadFields: unknown cl.protocol %i\n", cl.protocol);
+       if ((cl.protocol == PROTOCOL_DARKPLACES5 || cl.protocol == PROTOCOL_DARKPLACES6) && !(e->flags & RENDER_LOWPRECISION))
+       {
+               if (bits & E_ANGLE1)
+                       e->angles[0] = MSG_ReadAngle16i();
+               if (bits & E_ANGLE2)
+                       e->angles[1] = MSG_ReadAngle16i();
+               if (bits & E_ANGLE3)
+                       e->angles[2] = MSG_ReadAngle16i();
+       }
+       else
+       {
+               if (bits & E_ANGLE1)
+                       e->angles[0] = MSG_ReadAngle8i();
+               if (bits & E_ANGLE2)
+                       e->angles[1] = MSG_ReadAngle8i();
+               if (bits & E_ANGLE3)
+                       e->angles[2] = MSG_ReadAngle8i();
+       }
+       if (bits & E_MODEL1)
+               e->modelindex = (e->modelindex & 0xFF00) | (unsigned int) MSG_ReadByte();
+       if (bits & E_MODEL2)
+               e->modelindex = (e->modelindex & 0x00FF) | ((unsigned int) MSG_ReadByte() << 8);
+       if (bits & E_FRAME1)
+               e->frame = (e->frame & 0xFF00) | (unsigned int) MSG_ReadByte();
+       if (bits & E_FRAME2)
+               e->frame = (e->frame & 0x00FF) | ((unsigned int) MSG_ReadByte() << 8);
+       if (bits & E_EFFECTS1)
+               e->effects = (e->effects & 0xFF00) | (unsigned int) MSG_ReadByte();
+       if (bits & E_EFFECTS2)
+               e->effects = (e->effects & 0x00FF) | ((unsigned int) MSG_ReadByte() << 8);
+       if (bits & E_COLORMAP)
+               e->colormap = MSG_ReadByte();
+       if (bits & E_SKIN)
+               e->skin = MSG_ReadByte();
+       if (bits & E_ALPHA)
+               e->alpha = MSG_ReadByte();
+       if (bits & E_SCALE)
+               e->scale = MSG_ReadByte();
+       if (bits & E_GLOWSIZE)
+               e->glowsize = MSG_ReadByte();
+       if (bits & E_GLOWCOLOR)
+               e->glowcolor = MSG_ReadByte();
+       if (cl.protocol == PROTOCOL_DARKPLACES2)
+               if (bits & E_FLAGS)
+                       e->flags = MSG_ReadByte();
+       if (bits & E_TAGATTACHMENT)
+       {
+               e->tagentity = (unsigned short) MSG_ReadShort();
+               e->tagindex = MSG_ReadByte();
+       }
+       if (bits & E_LIGHT)
+       {
+               e->light[0] = (unsigned short) MSG_ReadShort();
+               e->light[1] = (unsigned short) MSG_ReadShort();
+               e->light[2] = (unsigned short) MSG_ReadShort();
+               e->light[3] = (unsigned short) MSG_ReadShort();
+       }
+       if (bits & E_LIGHTSTYLE)
+               e->lightstyle = MSG_ReadByte();
+       if (bits & E_LIGHTPFLAGS)
+               e->lightpflags = MSG_ReadByte();
+
+       if (developer_networkentities.integer >= 2)
+       {
+               Con_Printf("ReadFields e%i", e->number);
+
+               if (bits & E_ORIGIN1)
+                       Con_Printf(" E_ORIGIN1 %f", e->origin[0]);
+               if (bits & E_ORIGIN2)
+                       Con_Printf(" E_ORIGIN2 %f", e->origin[1]);
+               if (bits & E_ORIGIN3)
+                       Con_Printf(" E_ORIGIN3 %f", e->origin[2]);
+               if (bits & E_ANGLE1)
+                       Con_Printf(" E_ANGLE1 %f", e->angles[0]);
+               if (bits & E_ANGLE2)
+                       Con_Printf(" E_ANGLE2 %f", e->angles[1]);
+               if (bits & E_ANGLE3)
+                       Con_Printf(" E_ANGLE3 %f", e->angles[2]);
+               if (bits & (E_MODEL1 | E_MODEL2))
+                       Con_Printf(" E_MODEL %i", e->modelindex);
+
+               if (bits & (E_FRAME1 | E_FRAME2))
+                       Con_Printf(" E_FRAME %i", e->frame);
+               if (bits & (E_EFFECTS1 | E_EFFECTS2))
+                       Con_Printf(" E_EFFECTS %i", e->effects);
+               if (bits & E_ALPHA)
+                       Con_Printf(" E_ALPHA %f", e->alpha / 255.0f);
+               if (bits & E_SCALE)
+                       Con_Printf(" E_SCALE %f", e->scale / 16.0f);
+               if (bits & E_COLORMAP)
+                       Con_Printf(" E_COLORMAP %i", e->colormap);
+               if (bits & E_SKIN)
+                       Con_Printf(" E_SKIN %i", e->skin);
+
+               if (bits & E_GLOWSIZE)
+                       Con_Printf(" E_GLOWSIZE %i", e->glowsize * 4);
+               if (bits & E_GLOWCOLOR)
+                       Con_Printf(" E_GLOWCOLOR %i", e->glowcolor);
+
+               if (bits & E_LIGHT)
+                       Con_Printf(" E_LIGHT %i:%i:%i:%i", e->light[0], e->light[1], e->light[2], e->light[3]);
+               if (bits & E_LIGHTPFLAGS)
+                       Con_Printf(" E_LIGHTPFLAGS %i", e->lightpflags);
+
+               if (bits & E_TAGATTACHMENT)
+                       Con_Printf(" E_TAGATTACHMENT e%i:%i", e->tagentity, e->tagindex);
+               if (bits & E_LIGHTSTYLE)
+                       Con_Printf(" E_LIGHTSTYLE %i", e->lightstyle);
+               Con_Print("\n");
+       }
+}
+
+// (client and server) allocates a new empty database
+entityframe_database_t *EntityFrame_AllocDatabase(mempool_t *mempool)
+{
+       return Mem_Alloc(mempool, sizeof(entityframe_database_t));
+}
+
+// (client and server) frees the database
+void EntityFrame_FreeDatabase(entityframe_database_t *d)
+{
+       Mem_Free(d);
 }
 
 // (server) clears the database to contain no frames (thus delta compression compresses against nothing)
-void EntityFrame_ClearDatabase(entity_database_t *d)
+void EntityFrame_ClearDatabase(entityframe_database_t *d)
 {
        memset(d, 0, sizeof(*d));
 }
 
 // (server and client) removes frames older than 'frame' from database
-void EntityFrame_AckFrame(entity_database_t *d, int frame)
+void EntityFrame_AckFrame(entityframe_database_t *d, int frame)
 {
        int i;
-       if (d->ackframe < frame)
-               d->ackframe = frame;
+       d->ackframenum = frame;
        for (i = 0;i < d->numframes && d->frames[i].framenum < frame;i++);
        // ignore outdated frame acks (out of order packets)
        if (i == 0)
@@ -42,38 +703,22 @@ void EntityFrame_AckFrame(entity_database_t *d, int frame)
 }
 
 // (server) clears frame, to prepare for adding entities
-void EntityFrame_Clear(entity_frame_t *f, vec3_t eye)
+void EntityFrame_Clear(entity_frame_t *f, vec3_t eye, int framenum)
 {
        f->time = 0;
-       f->framenum = 0;
+       f->framenum = framenum;
        f->numentities = 0;
        if (eye == NULL)
-       {
                VectorClear(f->eye);
-       }
        else
-       {
                VectorCopy(eye, f->eye);
-       }
-}
-
-// (server) allocates an entity slot in frame, returns NULL if full
-entity_state_t *EntityFrame_NewEntity(entity_frame_t *f, int number)
-{
-       entity_state_t *e;
-       if (f->numentities >= MAX_ENTITY_DATABASE)
-               return NULL;
-       e = &f->entitydata[f->numentities++];
-       e->active = true;
-       e->number = number;
-       return e;
 }
 
 // (server and client) reads a frame from the database
-void EntityFrame_FetchFrame(entity_database_t *d, int framenum, entity_frame_t *f)
+void EntityFrame_FetchFrame(entityframe_database_t *d, int framenum, entity_frame_t *f)
 {
        int i, n;
-       EntityFrame_Clear(f, NULL);
+       EntityFrame_Clear(f, NULL, -1);
        for (i = 0;i < d->numframes && d->frames[i].framenum < framenum;i++);
        if (i < d->numframes && framenum == d->frames[i].framenum)
        {
@@ -87,23 +732,21 @@ void EntityFrame_FetchFrame(entity_database_t *d, int framenum, entity_frame_t *
                        memcpy(f->entitydata + n, d->entitydata, sizeof(*f->entitydata) * (f->numentities - n));
                VectorCopy(d->eye, f->eye);
        }
-       else
-               f->framenum = -1;
 }
 
 // (server and client) adds a entity_frame to the database, for future reference
-void EntityFrame_AddFrame(entity_database_t *d, entity_frame_t *f)
+void EntityFrame_AddFrame(entityframe_database_t *d, vec3_t eye, int framenum, int numentities, const entity_state_t *entitydata)
 {
        int n, e;
        entity_frameinfo_t *info;
 
-       VectorCopy(f->eye, d->eye);
+       VectorCopy(eye, d->eye);
 
        // figure out how many entity slots are used already
        if (d->numframes)
        {
                n = d->frames[d->numframes - 1].endentity - d->frames[0].firstentity;
-               if (n + f->numentities > MAX_ENTITY_DATABASE || d->numframes >= MAX_ENTITY_HISTORY)
+               if (n + numentities > MAX_ENTITY_DATABASE || d->numframes >= MAX_ENTITY_HISTORY)
                {
                        // ran out of room, dump database
                        EntityFrame_ClearDatabase(d);
@@ -111,17 +754,17 @@ void EntityFrame_AddFrame(entity_database_t *d, entity_frame_t *f)
        }
 
        info = &d->frames[d->numframes];
-       info->framenum = f->framenum;
+       info->framenum = framenum;
        e = -1000;
        // make sure we check the newly added frame as well, but we haven't incremented numframes yet
        for (n = 0;n <= d->numframes;n++)
        {
                if (e >= d->frames[n].framenum)
                {
-                       if (e == f->framenum)
-                               Con_Printf("EntityFrame_AddFrame: tried to add out of sequence frame to database\n");
+                       if (e == framenum)
+                               Con_Print("EntityFrame_AddFrame: tried to add out of sequence frame to database\n");
                        else
-                               Con_Printf("EntityFrame_AddFrame: out of sequence frames in database\n");
+                               Con_Print("EntityFrame_AddFrame: out of sequence frames in database\n");
                        return;
                }
                e = d->frames[n].framenum;
@@ -131,41 +774,54 @@ void EntityFrame_AddFrame(entity_database_t *d, entity_frame_t *f)
                info->firstentity = d->frames[d->numframes - 1].endentity;
        else
                info->firstentity = 0;
-       info->endentity = info->firstentity + f->numentities;
+       info->endentity = info->firstentity + numentities;
        d->numframes++;
 
        n = info->firstentity % MAX_ENTITY_DATABASE;
        e = MAX_ENTITY_DATABASE - n;
-       if (e > f->numentities)
-               e = f->numentities;
-       memcpy(d->entitydata + n, f->entitydata, sizeof(entity_state_t) * e);
-       if (f->numentities > e)
-               memcpy(d->entitydata, f->entitydata + e, sizeof(entity_state_t) * (f->numentities - e));
+       if (e > numentities)
+               e = numentities;
+       memcpy(d->entitydata + n, entitydata, sizeof(entity_state_t) * e);
+       if (numentities > e)
+               memcpy(d->entitydata, entitydata + e, sizeof(entity_state_t) * (numentities - e));
 }
 
 // (server) writes a frame to network stream
 static entity_frame_t deltaframe; // FIXME?
-void EntityFrame_Write(entity_database_t *d, entity_frame_t *f, sizebuf_t *msg)
+void EntityFrame_WriteFrame(sizebuf_t *msg, entityframe_database_t *d, int numstates, const entity_state_t *states, int viewentnum)
 {
-       int i, onum, bits, number;
+       int i, onum, number;
        entity_frame_t *o = &deltaframe;
-       entity_state_t *ent, *delta, baseline;
+       const entity_state_t *ent, *delta;
+       vec3_t eye;
+
+       d->latestframenum++;
+
+       VectorClear(eye);
+       for (i = 0;i < numstates;i++)
+       {
+               if (states[i].number == viewentnum)
+               {
+                       VectorSet(eye, states[i].origin[0], states[i].origin[1], states[i].origin[2] + 22);
+                       break;
+               }
+       }
 
-       EntityFrame_AddFrame(d, f);
+       EntityFrame_AddFrame(d, eye, d->latestframenum, numstates, states);
+
+       EntityFrame_FetchFrame(d, d->ackframenum, o);
 
-       ClearStateToDefault(&baseline);
-       EntityFrame_FetchFrame(d, d->ackframe > 0 ? d->ackframe : -1, o);
        MSG_WriteByte (msg, svc_entities);
        MSG_WriteLong (msg, o->framenum);
-       MSG_WriteLong (msg, f->framenum);
-       MSG_WriteFloat (msg, f->eye[0]);
-       MSG_WriteFloat (msg, f->eye[1]);
-       MSG_WriteFloat (msg, f->eye[2]);
+       MSG_WriteLong (msg, d->latestframenum);
+       MSG_WriteFloat (msg, eye[0]);
+       MSG_WriteFloat (msg, eye[1]);
+       MSG_WriteFloat (msg, eye[2]);
 
        onum = 0;
-       for (i = 0;i < f->numentities;i++)
+       for (i = 0;i < numstates;i++)
        {
-               ent = f->entitydata + i;
+               ent = states + i;
                number = ent->number;
                for (;onum < o->numentities && o->entitydata[onum].number < number;onum++)
                {
@@ -181,134 +837,10 @@ void EntityFrame_Write(entity_database_t *d, entity_frame_t *f, sizebuf_t *msg)
                }
                else
                {
-                       // delta from baseline
-                       delta = &baseline;
-               }
-               bits = 0;
-               if (ent->flags & RENDER_LOWPRECISION)
-               {
-                       if ((int) ent->origin[0] != (int) delta->origin[0])
-                               bits |= E_ORIGIN1;
-                       if ((int) ent->origin[1] != (int) delta->origin[1])
-                               bits |= E_ORIGIN2;
-                       if ((int) ent->origin[2] != (int) delta->origin[2])
-                               bits |= E_ORIGIN3;
-               }
-               else
-               {
-                       if (fabs(ent->origin[0] - delta->origin[0]) > 0.01f)
-                               bits |= E_ORIGIN1;
-                       if (fabs(ent->origin[1] - delta->origin[1]) > 0.01f)
-                               bits |= E_ORIGIN2;
-                       if (fabs(ent->origin[2] - delta->origin[2]) > 0.01f)
-                               bits |= E_ORIGIN3;
-               }
-               if ((qbyte) (ent->angles[0] * (256.0f / 360.0f)) != (qbyte) (delta->angles[0] * (256.0f / 360.0f)))
-                       bits |= E_ANGLE1;
-               if ((qbyte) (ent->angles[1] * (256.0f / 360.0f)) != (qbyte) (delta->angles[1] * (256.0f / 360.0f)))
-                       bits |= E_ANGLE2;
-               if ((qbyte) (ent->angles[2] * (256.0f / 360.0f)) != (qbyte) (delta->angles[2] * (256.0f / 360.0f)))
-                       bits |= E_ANGLE3;
-               if ((ent->modelindex ^ delta->modelindex) & 0x00FF)
-                       bits |= E_MODEL1;
-               if ((ent->modelindex ^ delta->modelindex) & 0xFF00)
-                       bits |= E_MODEL2;
-               if ((ent->frame ^ delta->frame) & 0x00FF)
-                       bits |= E_FRAME1;
-               if ((ent->frame ^ delta->frame) & 0xFF00)
-                       bits |= E_FRAME2;
-               if ((ent->effects ^ delta->effects) & 0x00FF)
-                       bits |= E_EFFECTS1;
-               if ((ent->effects ^ delta->effects) & 0xFF00)
-                       bits |= E_EFFECTS2;
-               if (ent->colormap != delta->colormap)
-                       bits |= E_COLORMAP;
-               if (ent->skin != delta->skin)
-                       bits |= E_SKIN;
-               if (ent->alpha != delta->alpha)
-                       bits |= E_ALPHA;
-               if (ent->scale != delta->scale)
-                       bits |= E_SCALE;
-               if (ent->glowsize != delta->glowsize)
-                       bits |= E_GLOWSIZE;
-               if (ent->glowcolor != delta->glowcolor)
-                       bits |= E_GLOWCOLOR;
-               if (ent->flags != delta->flags)
-                       bits |= E_FLAGS;
-
-               if (bits) // don't send anything if it hasn't changed
-               {
-                       if (bits & 0xFF000000)
-                               bits |= E_EXTEND3;
-                       if (bits & 0x00FF0000)
-                               bits |= E_EXTEND2;
-                       if (bits & 0x0000FF00)
-                               bits |= E_EXTEND1;
-
-                       MSG_WriteShort(msg, number);
-                       MSG_WriteByte(msg, bits & 0xFF);
-                       if (bits & E_EXTEND1)
-                       {
-                               MSG_WriteByte(msg, (bits >> 8) & 0xFF);
-                               if (bits & E_EXTEND2)
-                               {
-                                       MSG_WriteByte(msg, (bits >> 16) & 0xFF);
-                                       if (bits & E_EXTEND3)
-                                               MSG_WriteByte(msg, (bits >> 24) & 0xFF);
-                               }
-                       }
-                       // LordHavoc: have to write flags first, as they can modify protocol
-                       if (bits & E_FLAGS)
-                               MSG_WriteByte(msg, ent->flags);
-                       if (ent->flags & RENDER_LOWPRECISION)
-                       {
-                               if (bits & E_ORIGIN1)
-                                       MSG_WriteShort(msg, ent->origin[0]);
-                               if (bits & E_ORIGIN2)
-                                       MSG_WriteShort(msg, ent->origin[1]);
-                               if (bits & E_ORIGIN3)
-                                       MSG_WriteShort(msg, ent->origin[2]);
-                       }
-                       else
-                       {
-                               if (bits & E_ORIGIN1)
-                                       MSG_WriteFloat(msg, ent->origin[0]);
-                               if (bits & E_ORIGIN2)
-                                       MSG_WriteFloat(msg, ent->origin[1]);
-                               if (bits & E_ORIGIN3)
-                                       MSG_WriteFloat(msg, ent->origin[2]);
-                       }
-                       if (bits & E_ANGLE1)
-                               MSG_WriteAngle(msg, ent->angles[0]);
-                       if (bits & E_ANGLE2)
-                               MSG_WriteAngle(msg, ent->angles[1]);
-                       if (bits & E_ANGLE3)
-                               MSG_WriteAngle(msg, ent->angles[2]);
-                       if (bits & E_MODEL1)
-                               MSG_WriteByte(msg, ent->modelindex & 0xFF);
-                       if (bits & E_MODEL2)
-                               MSG_WriteByte(msg, (ent->modelindex >> 8) & 0xFF);
-                       if (bits & E_FRAME1)
-                               MSG_WriteByte(msg, ent->frame & 0xFF);
-                       if (bits & E_FRAME2)
-                               MSG_WriteByte(msg, (ent->frame >> 8) & 0xFF);
-                       if (bits & E_EFFECTS1)
-                               MSG_WriteByte(msg, ent->effects & 0xFF);
-                       if (bits & E_EFFECTS2)
-                               MSG_WriteByte(msg, (ent->effects >> 8) & 0xFF);
-                       if (bits & E_COLORMAP)
-                               MSG_WriteByte(msg, ent->colormap);
-                       if (bits & E_SKIN)
-                               MSG_WriteByte(msg, ent->skin);
-                       if (bits & E_ALPHA)
-                               MSG_WriteByte(msg, ent->alpha);
-                       if (bits & E_SCALE)
-                               MSG_WriteByte(msg, ent->scale);
-                       if (bits & E_GLOWSIZE)
-                               MSG_WriteByte(msg, ent->glowsize);
-                       if (bits & E_GLOWCOLOR)
-                               MSG_WriteByte(msg, ent->glowcolor);
+                       // delta from defaults
+                       delta = &defaultstate;
                }
+               EntityState_WriteUpdate(ent, msg, delta);
        }
        for (;onum < o->numentities;onum++)
        {
@@ -320,20 +852,25 @@ void EntityFrame_Write(entity_database_t *d, entity_frame_t *f, sizebuf_t *msg)
 
 // (client) reads a frame from network stream
 static entity_frame_t framedata; // FIXME?
-void EntityFrame_Read(entity_database_t *d)
+void EntityFrame_CL_ReadFrame(void)
 {
-       int number, removed, bits;
+       int i, number, removed;
        entity_frame_t *f = &framedata, *delta = &deltaframe;
-       entity_state_t *e, baseline, *old, *oldend;
+       entity_state_t *e, *old, *oldend;
+       entity_t *ent;
+       entityframe_database_t *d;
+       if (!cl.entitydatabase)
+               cl.entitydatabase = EntityFrame_AllocDatabase(cl_entities_mempool);
+       d = cl.entitydatabase;
 
-       ClearStateToDefault(&baseline);
-
-       EntityFrame_Clear(f, NULL);
+       EntityFrame_Clear(f, NULL, -1);
 
        // read the frame header info
        f->time = cl.mtime[0];
        number = MSG_ReadLong();
-       f->framenum = MSG_ReadLong();
+       for (i = 0;i < LATESTFRAMENUMS-1;i++)
+               cl.latestframenums[i] = cl.latestframenums[i+1];
+       cl.latestframenums[LATESTFRAMENUMS-1] = f->framenum = MSG_ReadLong();
        f->eye[0] = MSG_ReadFloat();
        f->eye[1] = MSG_ReadFloat();
        f->eye[2] = MSG_ReadFloat();
@@ -342,7 +879,7 @@ void EntityFrame_Read(entity_database_t *d)
        old = delta->entitydata;
        oldend = old + delta->numentities;
        // read entities until we hit the magic 0xFFFF end tag
-       while ((number = (unsigned short) MSG_ReadShort()) != 0xFFFF)
+       while ((number = (unsigned short) MSG_ReadShort()) != 0xFFFF && !msg_badread)
        {
                if (msg_badread)
                        Host_Error("EntityFrame_Read: read error\n");
@@ -356,10 +893,8 @@ void EntityFrame_Read(entity_database_t *d)
                {
                        if (f->numentities >= MAX_ENTITY_DATABASE)
                                Host_Error("EntityFrame_Read: entity list too big\n");
-                       memcpy(f->entitydata + f->numentities, old, sizeof(entity_state_t));
-                       f->entitydata[f->numentities].time = cl.mtime[0];
-                       old++;
-                       f->numentities++;
+                       f->entitydata[f->numentities] = *old++;
+                       f->entitydata[f->numentities++].time = cl.mtime[0];
                }
                if (removed)
                {
@@ -379,116 +914,1135 @@ void EntityFrame_Read(entity_database_t *d)
                        if (old < oldend && old->number == number)
                        {
                                // delta from old entity
-                               memcpy(e, old++, sizeof(*e));
+                               *e = *old++;
                        }
                        else
                        {
-                               // delta from baseline
-                               memcpy(e, &baseline, sizeof(*e));
+                               // delta from defaults
+                               *e = defaultstate;
                        }
 
+                       if (cl_num_entities <= number)
+                       {
+                               cl_num_entities = number + 1;
+                               if (number >= cl_max_entities)
+                                       CL_ExpandEntities(number);
+                       }
+                       cl_entities_active[number] = true;
                        e->active = true;
                        e->time = cl.mtime[0];
                        e->number = number;
+                       EntityState_ReadFields(e, EntityState_ReadExtendBits());
+               }
+       }
+       while (old < oldend)
+       {
+               if (f->numentities >= MAX_ENTITY_DATABASE)
+                       Host_Error("EntityFrame_Read: entity list too big\n");
+               f->entitydata[f->numentities] = *old++;
+               f->entitydata[f->numentities++].time = cl.mtime[0];
+       }
+       EntityFrame_AddFrame(d, f->eye, f->framenum, f->numentities, f->entitydata);
 
-                       bits = MSG_ReadByte();
-                       if (bits & E_EXTEND1)
+       memset(cl_entities_active, 0, cl_num_entities * sizeof(qbyte));
+       number = 1;
+       for (i = 0;i < f->numentities;i++)
+       {
+               for (;number < f->entitydata[i].number && number < cl_num_entities;number++)
+               {
+                       if (cl_entities_active[number])
                        {
-                               bits |= MSG_ReadByte() << 8;
-                               if (bits & E_EXTEND2)
+                               cl_entities_active[number] = false;
+                               cl_entities[number].state_current.active = false;
+                       }
+               }
+               if (number >= cl_num_entities)
+                       break;
+               // update the entity
+               ent = &cl_entities[number];
+               ent->state_previous = ent->state_current;
+               ent->state_current = f->entitydata[i];
+               CL_MoveLerpEntityStates(ent);
+               // the entity lives again...
+               cl_entities_active[number] = true;
+               number++;
+       }
+       for (;number < cl_num_entities;number++)
+       {
+               if (cl_entities_active[number])
+               {
+                       cl_entities_active[number] = false;
+                       cl_entities[number].state_current.active = false;
+               }
+       }
+}
+
+
+// (client) returns the frame number of the most recent frame recieved
+int EntityFrame_MostRecentlyRecievedFrameNum(entityframe_database_t *d)
+{
+       if (d->numframes)
+               return d->frames[d->numframes - 1].framenum;
+       else
+               return -1;
+}
+
+
+
+
+
+
+entity_state_t *EntityFrame4_GetReferenceEntity(entityframe4_database_t *d, int number)
+{
+       if (d->maxreferenceentities <= number)
+       {
+               int oldmax = d->maxreferenceentities;
+               entity_state_t *oldentity = d->referenceentity;
+               d->maxreferenceentities = (number + 15) & ~7;
+               d->referenceentity = Mem_Alloc(d->mempool, d->maxreferenceentities * sizeof(*d->referenceentity));
+               if (oldentity)
+               {
+                       memcpy(d->referenceentity, oldentity, oldmax * sizeof(*d->referenceentity));
+                       Mem_Free(oldentity);
+               }
+               // clear the newly created entities
+               for (;oldmax < d->maxreferenceentities;oldmax++)
+               {
+                       d->referenceentity[oldmax] = defaultstate;
+                       d->referenceentity[oldmax].number = oldmax;
+               }
+       }
+       return d->referenceentity + number;
+}
+
+void EntityFrame4_AddCommitEntity(entityframe4_database_t *d, const entity_state_t *s)
+{
+       // resize commit's entity list if full
+       if (d->currentcommit->maxentities <= d->currentcommit->numentities)
+       {
+               entity_state_t *oldentity = d->currentcommit->entity;
+               d->currentcommit->maxentities += 8;
+               d->currentcommit->entity = Mem_Alloc(d->mempool, d->currentcommit->maxentities * sizeof(*d->currentcommit->entity));
+               if (oldentity)
+               {
+                       memcpy(d->currentcommit->entity, oldentity, d->currentcommit->numentities * sizeof(*d->currentcommit->entity));
+                       Mem_Free(oldentity);
+               }
+       }
+       d->currentcommit->entity[d->currentcommit->numentities++] = *s;
+}
+
+entityframe4_database_t *EntityFrame4_AllocDatabase(mempool_t *pool)
+{
+       entityframe4_database_t *d;
+       d = Mem_Alloc(pool, sizeof(*d));
+       d->mempool = pool;
+       EntityFrame4_ResetDatabase(d);
+       return d;
+}
+
+void EntityFrame4_FreeDatabase(entityframe4_database_t *d)
+{
+       int i;
+       for (i = 0;i < MAX_ENTITY_HISTORY;i++)
+               if (d->commit[i].entity)
+                       Mem_Free(d->commit[i].entity);
+       if (d->referenceentity)
+               Mem_Free(d->referenceentity);
+       Mem_Free(d);
+}
+
+void EntityFrame4_ResetDatabase(entityframe4_database_t *d)
+{
+       int i;
+       d->referenceframenum = -1;
+       for (i = 0;i < MAX_ENTITY_HISTORY;i++)
+               d->commit[i].numentities = 0;
+       for (i = 0;i < d->maxreferenceentities;i++)
+               d->referenceentity[i] = defaultstate;
+}
+
+int EntityFrame4_AckFrame(entityframe4_database_t *d, int framenum, int servermode)
+{
+       int i, j, found;
+       entity_database4_commit_t *commit;
+       if (framenum == -1)
+       {
+               // reset reference, but leave commits alone
+               d->referenceframenum = -1;
+               for (i = 0;i < d->maxreferenceentities;i++)
+                       d->referenceentity[i] = defaultstate;
+               // if this is the server, remove commits
+                       for (i = 0, commit = d->commit;i < MAX_ENTITY_HISTORY;i++, commit++)
+                               commit->numentities = 0;
+               found = true;
+       }
+       else if (d->referenceframenum == framenum)
+               found = true;
+       else
+       {
+               found = false;
+               for (i = 0, commit = d->commit;i < MAX_ENTITY_HISTORY;i++, commit++)
+               {
+                       if (commit->numentities && commit->framenum <= framenum)
+                       {
+                               if (commit->framenum == framenum)
                                {
-                                       bits |= MSG_ReadByte() << 16;
-                                       if (bits & E_EXTEND3)
-                                               bits |= MSG_ReadByte() << 24;
+                                       found = true;
+                                       d->referenceframenum = framenum;
+                                       if (developer_networkentities.integer >= 3)
+                                       {
+                                               for (j = 0;j < commit->numentities;j++)
+                                               {
+                                                       entity_state_t *s = EntityFrame4_GetReferenceEntity(d, commit->entity[j].number);
+                                                       if (commit->entity[j].active != s->active)
+                                                       {
+                                                               if (commit->entity[j].active)
+                                                                       Con_Printf("commit entity %i has become active (modelindex %i)\n", commit->entity[j].number, commit->entity[j].modelindex);
+                                                               else
+                                                                       Con_Printf("commit entity %i has become inactive (modelindex %i)\n", commit->entity[j].number, commit->entity[j].modelindex);
+                                                       }
+                                                       *s = commit->entity[j];
+                                               }
+                                       }
+                                       else
+                                               for (j = 0;j < commit->numentities;j++)
+                                                       *EntityFrame4_GetReferenceEntity(d, commit->entity[j].number) = commit->entity[j];
                                }
+                               commit->numentities = 0;
                        }
+               }
+       }
+       if (developer_networkentities.integer >= 1)
+       {
+               Con_Printf("ack ref:%i database updated to: ref:%i commits:", framenum, d->referenceframenum);
+               for (i = 0;i < MAX_ENTITY_HISTORY;i++)
+                       if (d->commit[i].numentities)
+                               Con_Printf(" %i", d->commit[i].framenum);
+               Con_Print("\n");
+       }
+       return found;
+}
 
-                       if (dpprotocol == DPPROTOCOL_VERSION2)
+void EntityFrame4_CL_ReadFrame(void)
+{
+       int i, n, cnumber, referenceframenum, framenum, enumber, done, stopnumber, skip = false;
+       entity_state_t *s;
+       entityframe4_database_t *d;
+       if (!cl.entitydatabase4)
+               cl.entitydatabase4 = EntityFrame4_AllocDatabase(cl_entities_mempool);
+       d = cl.entitydatabase4;
+       // read the number of the frame this refers to
+       referenceframenum = MSG_ReadLong();
+       // read the number of this frame
+       for (i = 0;i < LATESTFRAMENUMS-1;i++)
+               cl.latestframenums[i] = cl.latestframenums[i+1];
+       cl.latestframenums[LATESTFRAMENUMS-1] = framenum = MSG_ReadLong();
+       // read the start number
+       enumber = (unsigned short) MSG_ReadShort();
+       if (developer_networkentities.integer >= 1)
+       {
+               Con_Printf("recv svc_entities num:%i ref:%i database: ref:%i commits:", framenum, referenceframenum, d->referenceframenum);
+               for (i = 0;i < MAX_ENTITY_HISTORY;i++)
+                       if (d->commit[i].numentities)
+                               Con_Printf(" %i", d->commit[i].framenum);
+               Con_Print("\n");
+       }
+       if (!EntityFrame4_AckFrame(d, referenceframenum, false))
+       {
+               Con_Print("EntityFrame4_CL_ReadFrame: reference frame invalid (VERY BAD ERROR), this update will be skipped\n");
+               skip = true;
+       }
+       d->currentcommit = NULL;
+       for (i = 0;i < MAX_ENTITY_HISTORY;i++)
+       {
+               if (!d->commit[i].numentities)
+               {
+                       d->currentcommit = d->commit + i;
+                       d->currentcommit->framenum = framenum;
+                       d->currentcommit->numentities = 0;
+               }
+       }
+       if (d->currentcommit == NULL)
+       {
+               Con_Printf("EntityFrame4_CL_ReadFrame: error while decoding frame %i: database full, reading but not storing this update\n", framenum);
+               skip = true;
+       }
+       done = false;
+       while (!done && !msg_badread)
+       {
+               // read the number of the modified entity
+               // (gaps will be copied unmodified)
+               n = (unsigned short)MSG_ReadShort();
+               if (n == 0x8000)
+               {
+                       // no more entities in this update, but we still need to copy the
+                       // rest of the reference entities (final gap)
+                       done = true;
+                       // read end of range number, then process normally
+                       n = (unsigned short)MSG_ReadShort();
+               }
+               // high bit means it's a remove message
+               cnumber = n & 0x7FFF;
+               // if this is a live entity we may need to expand the array
+               if (cl_num_entities <= cnumber && !(n & 0x8000))
+               {
+                       cl_num_entities = cnumber + 1;
+                       if (cnumber >= cl_max_entities)
+                               CL_ExpandEntities(cnumber);
+               }
+               // add one (the changed one) if not done
+               stopnumber = cnumber + !done;
+               // process entities in range from the last one to the changed one
+               for (;enumber < stopnumber;enumber++)
+               {
+                       if (skip || enumber >= cl_num_entities)
                        {
-                               if (bits & E_ORIGIN1)
-                                       e->origin[0] = (signed short) MSG_ReadShort();
-                               if (bits & E_ORIGIN2)
-                                       e->origin[1] = (signed short) MSG_ReadShort();
-                               if (bits & E_ORIGIN3)
-                                       e->origin[2] = (signed short) MSG_ReadShort();
+                               if (enumber == cnumber && (n & 0x8000) == 0)
+                               {
+                                       entity_state_t tempstate;
+                                       EntityState_ReadFields(&tempstate, EntityState_ReadExtendBits());
+                               }
+                               continue;
                        }
-                       else
+                       // slide the current into the previous slot
+                       cl_entities[enumber].state_previous = cl_entities[enumber].state_current;
+                       // copy a new current from reference database
+                       cl_entities[enumber].state_current = *EntityFrame4_GetReferenceEntity(d, enumber);
+                       s = &cl_entities[enumber].state_current;
+                       // if this is the one to modify, read more data...
+                       if (enumber == cnumber)
                        {
-                               if (bits & E_FLAGS)
-                                       e->flags = MSG_ReadByte();
-                               if (e->flags & RENDER_LOWPRECISION || dpprotocol == DPPROTOCOL_VERSION2)
+                               if (n & 0x8000)
                                {
-                                       if (bits & E_ORIGIN1)
-                                               e->origin[0] = (signed short) MSG_ReadShort();
-                                       if (bits & E_ORIGIN2)
-                                               e->origin[1] = (signed short) MSG_ReadShort();
-                                       if (bits & E_ORIGIN3)
-                                               e->origin[2] = (signed short) MSG_ReadShort();
+                                       // simply removed
+                                       if (developer_networkentities.integer >= 2)
+                                               Con_Printf("entity %i: remove\n", enumber);
+                                       *s = defaultstate;
                                }
                                else
                                {
-                                       if (bits & E_ORIGIN1)
-                                               e->origin[0] = MSG_ReadFloat();
-                                       if (bits & E_ORIGIN2)
-                                               e->origin[1] = MSG_ReadFloat();
-                                       if (bits & E_ORIGIN3)
-                                               e->origin[2] = MSG_ReadFloat();
+                                       // read the changes
+                                       if (developer_networkentities.integer >= 2)
+                                               Con_Printf("entity %i: update\n", enumber);
+                                       s->active = true;
+                                       EntityState_ReadFields(s, EntityState_ReadExtendBits());
                                }
                        }
-                       if (bits & E_ANGLE1)
-                               e->angles[0] = MSG_ReadAngle();
-                       if (bits & E_ANGLE2)
-                               e->angles[1] = MSG_ReadAngle();
-                       if (bits & E_ANGLE3)
-                               e->angles[2] = MSG_ReadAngle();
-                       if (bits & E_MODEL1)
-                               e->modelindex = (e->modelindex & 0xFF00) | (unsigned int) MSG_ReadByte();
-                       if (bits & E_MODEL2)
-                               e->modelindex = (e->modelindex & 0x00FF) | ((unsigned int) MSG_ReadByte() << 8);
-                       if (bits & E_FRAME1)
-                               e->frame = (e->frame & 0xFF00) | (unsigned int) MSG_ReadByte();
-                       if (bits & E_FRAME2)
-                               e->frame = (e->frame & 0x00FF) | ((unsigned int) MSG_ReadByte() << 8);
-                       if (bits & E_EFFECTS1)
-                               e->effects = (e->effects & 0xFF00) | (unsigned int) MSG_ReadByte();
-                       if (bits & E_EFFECTS2)
-                               e->effects = (e->effects & 0x00FF) | ((unsigned int) MSG_ReadByte() << 8);
-                       if (bits & E_COLORMAP)
-                               e->colormap = MSG_ReadByte();
-                       if (bits & E_SKIN)
-                               e->skin = MSG_ReadByte();
-                       if (bits & E_ALPHA)
-                               e->alpha = MSG_ReadByte();
-                       if (bits & E_SCALE)
-                               e->scale = MSG_ReadByte();
-                       if (bits & E_GLOWSIZE)
-                               e->glowsize = MSG_ReadByte();
-                       if (bits & E_GLOWCOLOR)
-                               e->glowcolor = MSG_ReadByte();
-                       if (dpprotocol == DPPROTOCOL_VERSION2)
-                               if (bits & E_FLAGS)
-                                       e->flags = MSG_ReadByte();
+                       else if (developer_networkentities.integer >= 4)
+                               Con_Printf("entity %i: copy\n", enumber);
+                       // set the cl_entities_active flag
+                       cl_entities_active[enumber] = s->active;
+                       // set the update time
+                       s->time = cl.mtime[0];
+                       // fix the number (it gets wiped occasionally by copying from defaultstate)
+                       s->number = enumber;
+                       // check if we need to update the lerp stuff
+                       if (s->active)
+                               CL_MoveLerpEntityStates(&cl_entities[enumber]);
+                       // add this to the commit entry whether it is modified or not
+                       if (d->currentcommit)
+                               EntityFrame4_AddCommitEntity(d, &cl_entities[enumber].state_current);
+                       // print extra messages if desired
+                       if (developer_networkentities.integer >= 2 && cl_entities[enumber].state_current.active != cl_entities[enumber].state_previous.active)
+                       {
+                               if (cl_entities[enumber].state_current.active)
+                                       Con_Printf("entity #%i has become active\n", enumber);
+                               else if (cl_entities[enumber].state_previous.active)
+                                       Con_Printf("entity #%i has become inactive\n", enumber);
+                       }
                }
        }
-       while (old < oldend)
+       d->currentcommit = NULL;
+       if (skip)
+               EntityFrame4_ResetDatabase(d);
+}
+
+void EntityFrame4_WriteFrame(sizebuf_t *msg, entityframe4_database_t *d, int numstates, const entity_state_t *states)
+{
+       const entity_state_t *e, *s;
+       entity_state_t inactiveentitystate;
+       int i, n, startnumber;
+       sizebuf_t buf;
+       qbyte data[128];
+
+       // if there isn't enough space to accomplish anything, skip it
+       if (msg->cursize + 24 > msg->maxsize)
+               return;
+
+       // prepare the buffer
+       memset(&buf, 0, sizeof(buf));
+       buf.data = data;
+       buf.maxsize = sizeof(data);
+
+       for (i = 0;i < MAX_ENTITY_HISTORY;i++)
+               if (!d->commit[i].numentities)
+                       break;
+       // if commit buffer full, just don't bother writing an update this frame
+       if (i == MAX_ENTITY_HISTORY)
+               return;
+       d->currentcommit = d->commit + i;
+
+       // this state's number gets played around with later
+       inactiveentitystate = defaultstate;
+
+       d->currentcommit->numentities = 0;
+       d->currentcommit->framenum = ++d->latestframenumber;
+       MSG_WriteByte(msg, svc_entities);
+       MSG_WriteLong(msg, d->referenceframenum);
+       MSG_WriteLong(msg, d->currentcommit->framenum);
+       if (developer_networkentities.integer >= 1)
        {
-               if (f->numentities >= MAX_ENTITY_DATABASE)
-                       Host_Error("EntityFrame_Read: entity list too big\n");
-               memcpy(f->entitydata + f->numentities, old, sizeof(entity_state_t));
-               f->entitydata[f->numentities].time = cl.mtime[0];
-               old++;
-               f->numentities++;
+               Con_Printf("send svc_entities num:%i ref:%i (database: ref:%i commits:", d->currentcommit->framenum, d->referenceframenum, d->referenceframenum);
+               for (i = 0;i < MAX_ENTITY_HISTORY;i++)
+                       if (d->commit[i].numentities)
+                               Con_Printf(" %i", d->commit[i].framenum);
+               Con_Print(")\n");
+       }
+       if (d->currententitynumber >= sv.max_edicts)
+               startnumber = 1;
+       else
+               startnumber = bound(1, d->currententitynumber, sv.max_edicts - 1);
+       MSG_WriteShort(msg, startnumber);
+       // reset currententitynumber so if the loop does not break it we will
+       // start at beginning next frame (if it does break, it will set it)
+       d->currententitynumber = 1;
+       for (i = 0, n = startnumber;n < sv.max_edicts;n++)
+       {
+               // find the old state to delta from
+               e = EntityFrame4_GetReferenceEntity(d, n);
+               // prepare the buffer
+               SZ_Clear(&buf);
+               // entity exists, build an update (if empty there is no change)
+               // find the state in the list
+               for (;i < numstates && states[i].number < n;i++);
+               // make the message
+               s = states + i;
+               if (s->number == n)
+               {
+                       // build the update
+                       EntityState_WriteUpdate(s, &buf, e);
+               }
+               else
+               {
+                       inactiveentitystate.number = n;
+                       s = &inactiveentitystate;
+                       if (e->active)
+                       {
+                               // entity used to exist but doesn't anymore, send remove
+                               MSG_WriteShort(&buf, n | 0x8000);
+                       }
+               }
+               // if the commit is full, we're done this frame
+               if (msg->cursize + buf.cursize > msg->maxsize - 4)
+               {
+                       // next frame we will continue where we left off
+                       break;
+               }
+               // add the entity to the commit
+               EntityFrame4_AddCommitEntity(d, s);
+               // if the message is empty, skip out now
+               if (buf.cursize)
+               {
+                       // write the message to the packet
+                       SZ_Write(msg, buf.data, buf.cursize);
+               }
        }
-       EntityFrame_AddFrame(d, f);
+       d->currententitynumber = n;
+
+       // remove world message (invalid, and thus a good terminator)
+       MSG_WriteShort(msg, 0x8000);
+       // write the number of the end entity
+       MSG_WriteShort(msg, d->currententitynumber);
+       // just to be sure
+       d->currentcommit = NULL;
 }
 
 
-// (client) returns the frame number of the most recent frame recieved
-int EntityFrame_MostRecentlyRecievedFrameNum(entity_database_t *d)
+
+
+#define E5_PROTOCOL_PRIORITYLEVELS 32
+
+entityframe5_database_t *EntityFrame5_AllocDatabase(mempool_t *pool)
 {
-       if (d->numframes)
-               return d->frames[d->numframes - 1].framenum;
+       entityframe5_database_t *d;
+       d = Mem_Alloc(pool, sizeof(*d));
+       EntityFrame5_ResetDatabase(d);
+       return d;
+}
+
+void EntityFrame5_FreeDatabase(entityframe5_database_t *d)
+{
+       Mem_Free(d);
+}
+
+void EntityFrame5_ResetDatabase(entityframe5_database_t *d)
+{
+       int i;
+       memset(d, 0, sizeof(*d));
+       d->latestframenum = 0;
+       for (i = 0;i < MAX_EDICTS;i++)
+               d->states[i] = defaultstate;
+}
+
+
+int EntityState5_Priority(entityframe5_database_t *d, entity_state_t *view, entity_state_t *s, int changedbits, int age)
+{
+       int lowprecision, limit, priority;
+       double distance;
+       if (!changedbits)
+               return 0;
+       if (!s->active/* && changedbits & E5_FULLUPDATE*/)
+               return E5_PROTOCOL_PRIORITYLEVELS - 1;
+       // check whole attachment chain to judge relevance to player
+       lowprecision = false;
+       for (limit = 0;limit < 256;limit++)
+       {
+               if (s == view)
+                       return E5_PROTOCOL_PRIORITYLEVELS - 1;
+               if (s->flags & RENDER_VIEWMODEL)
+                       return E5_PROTOCOL_PRIORITYLEVELS - 1;
+               if (s->flags & RENDER_LOWPRECISION)
+                       lowprecision = true;
+               if (!s->tagentity)
+               {
+                       if (VectorCompare(s->origin, view->origin))
+                               return E5_PROTOCOL_PRIORITYLEVELS - 1;
+                       break;
+               }
+               s = d->states + s->tagentity;
+       }
+       if (limit >= 256)
+               Con_Printf("Protocol: Runaway loop recursing tagentity links on entity %i\n", s->number);
+       // it's not a viewmodel for this client
+       distance = VectorDistance(view->origin, s->origin);
+       priority = (E5_PROTOCOL_PRIORITYLEVELS / 2) + age - (int)(distance * (E5_PROTOCOL_PRIORITYLEVELS / 16384.0f));
+       if (lowprecision)
+               priority -= (E5_PROTOCOL_PRIORITYLEVELS / 4);
+       //if (changedbits & E5_FULLUPDATE)
+       //      priority += 4;
+       //if (changedbits & (E5_ATTACHMENT | E5_MODEL | E5_FLAGS | E5_COLORMAP))
+       //      priority += 4;
+       return (int) bound(1, priority, E5_PROTOCOL_PRIORITYLEVELS - 1);
+}
+
+void EntityState5_WriteUpdate(int number, const entity_state_t *s, int changedbits, sizebuf_t *msg)
+{
+       unsigned int bits = 0;
+       if (!s->active)
+               MSG_WriteShort(msg, number | 0x8000);
        else
-               return -1;
+       {
+               bits = changedbits;
+               if ((bits & E5_ORIGIN) && (s->origin[0] < -4096 || s->origin[0] >= 4096 || s->origin[1] < -4096 || s->origin[1] >= 4096 || s->origin[2] < -4096 || s->origin[2] >= 4096))
+                       bits |= E5_ORIGIN32;
+               if ((bits & E5_ANGLES) && !(s->flags & RENDER_LOWPRECISION))
+                       bits |= E5_ANGLES16;
+               if ((bits & E5_MODEL) && s->modelindex >= 256)
+                       bits |= E5_MODEL16;
+               if ((bits & E5_FRAME) && s->frame >= 256)
+                       bits |= E5_FRAME16;
+               if (bits & E5_EFFECTS)
+               {
+                       if (s->effects >= 65536)
+                               bits |= E5_EFFECTS32;
+                       else if (s->effects >= 256)
+                               bits |= E5_EFFECTS16;
+               }
+               if (bits >= 256)
+                       bits |= E5_EXTEND1;
+               if (bits >= 65536)
+                       bits |= E5_EXTEND2;
+               if (bits >= 16777216)
+                       bits |= E5_EXTEND3;
+               MSG_WriteShort(msg, number);
+               MSG_WriteByte(msg, bits & 0xFF);
+               if (bits & E5_EXTEND1)
+                       MSG_WriteByte(msg, (bits >> 8) & 0xFF);
+               if (bits & E5_EXTEND2)
+                       MSG_WriteByte(msg, (bits >> 16) & 0xFF);
+               if (bits & E5_EXTEND3)
+                       MSG_WriteByte(msg, (bits >> 24) & 0xFF);
+               if (bits & E5_FLAGS)
+                       MSG_WriteByte(msg, s->flags);
+               if (bits & E5_ORIGIN)
+               {
+                       if (bits & E5_ORIGIN32)
+                       {
+                               MSG_WriteCoord32f(msg, s->origin[0]);
+                               MSG_WriteCoord32f(msg, s->origin[1]);
+                               MSG_WriteCoord32f(msg, s->origin[2]);
+                       }
+                       else
+                       {
+                               MSG_WriteCoord13i(msg, s->origin[0]);
+                               MSG_WriteCoord13i(msg, s->origin[1]);
+                               MSG_WriteCoord13i(msg, s->origin[2]);
+                       }
+               }
+               if (bits & E5_ANGLES)
+               {
+                       if (bits & E5_ANGLES16)
+                       {
+                               MSG_WriteAngle16i(msg, s->angles[0]);
+                               MSG_WriteAngle16i(msg, s->angles[1]);
+                               MSG_WriteAngle16i(msg, s->angles[2]);
+                       }
+                       else
+                       {
+                               MSG_WriteAngle8i(msg, s->angles[0]);
+                               MSG_WriteAngle8i(msg, s->angles[1]);
+                               MSG_WriteAngle8i(msg, s->angles[2]);
+                       }
+               }
+               if (bits & E5_MODEL)
+               {
+                       if (bits & E5_MODEL16)
+                               MSG_WriteShort(msg, s->modelindex);
+                       else
+                               MSG_WriteByte(msg, s->modelindex);
+               }
+               if (bits & E5_FRAME)
+               {
+                       if (bits & E5_FRAME16)
+                               MSG_WriteShort(msg, s->frame);
+                       else
+                               MSG_WriteByte(msg, s->frame);
+               }
+               if (bits & E5_SKIN)
+                       MSG_WriteByte(msg, s->skin);
+               if (bits & E5_EFFECTS)
+               {
+                       if (bits & E5_EFFECTS32)
+                               MSG_WriteLong(msg, s->effects);
+                       else if (bits & E5_EFFECTS16)
+                               MSG_WriteShort(msg, s->effects);
+                       else
+                               MSG_WriteByte(msg, s->effects);
+               }
+               if (bits & E5_ALPHA)
+                       MSG_WriteByte(msg, s->alpha);
+               if (bits & E5_SCALE)
+                       MSG_WriteByte(msg, s->scale);
+               if (bits & E5_COLORMAP)
+                       MSG_WriteByte(msg, s->colormap);
+               if (bits & E5_ATTACHMENT)
+               {
+                       MSG_WriteShort(msg, s->tagentity);
+                       MSG_WriteByte(msg, s->tagindex);
+               }
+               if (bits & E5_LIGHT)
+               {
+                       MSG_WriteShort(msg, s->light[0]);
+                       MSG_WriteShort(msg, s->light[1]);
+                       MSG_WriteShort(msg, s->light[2]);
+                       MSG_WriteShort(msg, s->light[3]);
+                       MSG_WriteByte(msg, s->lightstyle);
+                       MSG_WriteByte(msg, s->lightpflags);
+               }
+               if (bits & E5_GLOW)
+               {
+                       MSG_WriteByte(msg, s->glowsize);
+                       MSG_WriteByte(msg, s->glowcolor);
+               }
+               if (bits & E5_COLORMOD)
+               {
+                       MSG_WriteByte(msg, s->colormod[0]);
+                       MSG_WriteByte(msg, s->colormod[1]);
+                       MSG_WriteByte(msg, s->colormod[2]);
+               }
+       }
+}
+
+void EntityState5_ReadUpdate(entity_state_t *s)
+{
+       int bits;
+       bits = MSG_ReadByte();
+       if (bits & E5_EXTEND1)
+       {
+               bits |= MSG_ReadByte() << 8;
+               if (bits & E5_EXTEND2)
+               {
+                       bits |= MSG_ReadByte() << 16;
+                       if (bits & E5_EXTEND3)
+                               bits |= MSG_ReadByte() << 24;
+               }
+       }
+       if (bits & E5_FULLUPDATE)
+       {
+               *s = defaultstate;
+               s->active = true;
+       }
+       if (bits & E5_FLAGS)
+               s->flags = MSG_ReadByte();
+       if (bits & E5_ORIGIN)
+       {
+               if (bits & E5_ORIGIN32)
+               {
+                       s->origin[0] = MSG_ReadCoord32f();
+                       s->origin[1] = MSG_ReadCoord32f();
+                       s->origin[2] = MSG_ReadCoord32f();
+               }
+               else
+               {
+                       s->origin[0] = MSG_ReadCoord13i();
+                       s->origin[1] = MSG_ReadCoord13i();
+                       s->origin[2] = MSG_ReadCoord13i();
+               }
+       }
+       if (bits & E5_ANGLES)
+       {
+               if (bits & E5_ANGLES16)
+               {
+                       s->angles[0] = MSG_ReadAngle16i();
+                       s->angles[1] = MSG_ReadAngle16i();
+                       s->angles[2] = MSG_ReadAngle16i();
+               }
+               else
+               {
+                       s->angles[0] = MSG_ReadAngle8i();
+                       s->angles[1] = MSG_ReadAngle8i();
+                       s->angles[2] = MSG_ReadAngle8i();
+               }
+       }
+       if (bits & E5_MODEL)
+       {
+               if (bits & E5_MODEL16)
+                       s->modelindex = (unsigned short) MSG_ReadShort();
+               else
+                       s->modelindex = MSG_ReadByte();
+       }
+       if (bits & E5_FRAME)
+       {
+               if (bits & E5_FRAME16)
+                       s->frame = (unsigned short) MSG_ReadShort();
+               else
+                       s->frame = MSG_ReadByte();
+       }
+       if (bits & E5_SKIN)
+               s->skin = MSG_ReadByte();
+       if (bits & E5_EFFECTS)
+       {
+               if (bits & E5_EFFECTS32)
+                       s->effects = (unsigned int) MSG_ReadLong();
+               else if (bits & E5_EFFECTS16)
+                       s->effects = (unsigned short) MSG_ReadShort();
+               else
+                       s->effects = MSG_ReadByte();
+       }
+       if (bits & E5_ALPHA)
+               s->alpha = MSG_ReadByte();
+       if (bits & E5_SCALE)
+               s->scale = MSG_ReadByte();
+       if (bits & E5_COLORMAP)
+               s->colormap = MSG_ReadByte();
+       if (bits & E5_ATTACHMENT)
+       {
+               s->tagentity = (unsigned short) MSG_ReadShort();
+               s->tagindex = MSG_ReadByte();
+       }
+       if (bits & E5_LIGHT)
+       {
+               s->light[0] = (unsigned short) MSG_ReadShort();
+               s->light[1] = (unsigned short) MSG_ReadShort();
+               s->light[2] = (unsigned short) MSG_ReadShort();
+               s->light[3] = (unsigned short) MSG_ReadShort();
+               s->lightstyle = MSG_ReadByte();
+               s->lightpflags = MSG_ReadByte();
+       }
+       if (bits & E5_GLOW)
+       {
+               s->glowsize = MSG_ReadByte();
+               s->glowcolor = MSG_ReadByte();
+       }
+       if (bits & E5_COLORMOD)
+       {
+               s->colormod[0] = MSG_ReadByte();
+               s->colormod[1] = MSG_ReadByte();
+               s->colormod[2] = MSG_ReadByte();
+       }
+
+
+       if (developer_networkentities.integer >= 2)
+       {
+               Con_Printf("ReadFields e%i", s->number);
+
+               if (bits & E5_ORIGIN)
+                       Con_Printf(" E5_ORIGIN %f %f %f", s->origin[0], s->origin[1], s->origin[2]);
+               if (bits & E5_ANGLES)
+                       Con_Printf(" E5_ANGLES %f %f %f", s->angles[0], s->angles[1], s->angles[2]);
+               if (bits & E5_MODEL)
+                       Con_Printf(" E5_MODEL %i", s->modelindex);
+               if (bits & E5_FRAME)
+                       Con_Printf(" E5_FRAME %i", s->frame);
+               if (bits & E5_SKIN)
+                       Con_Printf(" E5_SKIN %i", s->skin);
+               if (bits & E5_EFFECTS)
+                       Con_Printf(" E5_EFFECTS %i", s->effects);
+               if (bits & E5_FLAGS)
+               {
+                       Con_Printf(" E5_FLAGS %i (", s->flags);
+                       if (s->flags & RENDER_STEP)
+                               Con_Print(" STEP");
+                       if (s->flags & RENDER_GLOWTRAIL)
+                               Con_Print(" GLOWTRAIL");
+                       if (s->flags & RENDER_VIEWMODEL)
+                               Con_Print(" VIEWMODEL");
+                       if (s->flags & RENDER_EXTERIORMODEL)
+                               Con_Print(" EXTERIORMODEL");
+                       if (s->flags & RENDER_LOWPRECISION)
+                               Con_Print(" LOWPRECISION");
+                       if (s->flags & RENDER_COLORMAPPED)
+                               Con_Print(" COLORMAPPED");
+                       if (s->flags & RENDER_SHADOW)
+                               Con_Print(" SHADOW");
+                       if (s->flags & RENDER_LIGHT)
+                               Con_Print(" LIGHT");
+                       Con_Print(")");
+               }
+               if (bits & E5_ALPHA)
+                       Con_Printf(" E5_ALPHA %f", s->alpha / 255.0f);
+               if (bits & E5_SCALE)
+                       Con_Printf(" E5_SCALE %f", s->scale / 16.0f);
+               if (bits & E5_COLORMAP)
+                       Con_Printf(" E5_COLORMAP %i", s->colormap);
+               if (bits & E5_ATTACHMENT)
+                       Con_Printf(" E5_ATTACHMENT e%i:%i", s->tagentity, s->tagindex);
+               if (bits & E5_LIGHT)
+                       Con_Printf(" E5_LIGHT %i:%i:%i:%i %i:%i", s->light[0], s->light[1], s->light[2], s->light[3], s->lightstyle, s->lightpflags);
+               if (bits & E5_GLOW)
+                       Con_Printf(" E5_GLOW %i:%i", s->glowsize * 4, s->glowcolor);
+               if (bits & E5_COLORMOD)
+                       Con_Printf(" E5_COLORMOD %f:%f:%f", s->colormod[0] / 32.0f, s->colormod[1] / 32.0f, s->colormod[2] / 32.0f);
+               Con_Print("\n");
+       }
+}
+
+int EntityState5_DeltaBits(const entity_state_t *o, const entity_state_t *n)
+{
+       unsigned int bits = 0;
+       if (n->active)
+       {
+               if (!o->active)
+                       bits |= E5_FULLUPDATE;
+               if (!VectorCompare(o->origin, n->origin))
+                       bits |= E5_ORIGIN;
+               if (!VectorCompare(o->angles, n->angles))
+                       bits |= E5_ANGLES;
+               if (o->modelindex != n->modelindex)
+                       bits |= E5_MODEL;
+               if (o->frame != n->frame)
+                       bits |= E5_FRAME;
+               if (o->skin != n->skin)
+                       bits |= E5_SKIN;
+               if (o->effects != n->effects)
+                       bits |= E5_EFFECTS;
+               if (o->flags != n->flags)
+                       bits |= E5_FLAGS;
+               if (o->alpha != n->alpha)
+                       bits |= E5_ALPHA;
+               if (o->scale != n->scale)
+                       bits |= E5_SCALE;
+               if (o->colormap != n->colormap)
+                       bits |= E5_COLORMAP;
+               if (o->tagentity != n->tagentity || o->tagindex != n->tagindex)
+                       bits |= E5_ATTACHMENT;
+               if (o->light[0] != n->light[0] || o->light[1] != n->light[1] || o->light[2] != n->light[2] || o->light[3] != n->light[3] || o->lightstyle != n->lightstyle || o->lightpflags != n->lightpflags)
+                       bits |= E5_LIGHT;
+               if (o->glowsize != n->glowsize || o->glowcolor != n->glowcolor)
+                       bits |= E5_GLOW;
+               if (o->colormod[0] != n->colormod[0] || o->colormod[1] != n->colormod[1] || o->colormod[2] != n->colormod[2])
+                       bits |= E5_COLORMOD;
+       }
+       else
+               if (o->active)
+                       bits |= E5_FULLUPDATE;
+       return bits;
+}
+
+void EntityFrame5_CL_ReadFrame(void)
+{
+       int i, n, enumber;
+       entity_t *ent;
+       entity_state_t *s;
+       // read the number of this frame to echo back in next input packet
+       for (i = 0;i < LATESTFRAMENUMS-1;i++)
+               cl.latestframenums[i] = cl.latestframenums[i+1];
+       cl.latestframenums[LATESTFRAMENUMS-1] = MSG_ReadLong();
+       // read entity numbers until we find a 0x8000
+       // (which would be remove world entity, but is actually a terminator)
+       while ((n = (unsigned short)MSG_ReadShort()) != 0x8000 && !msg_badread)
+       {
+               // get the entity number
+               enumber = n & 0x7FFF;
+               // we may need to expand the array
+               if (cl_num_entities <= enumber)
+               {
+                       cl_num_entities = enumber + 1;
+                       if (enumber >= cl_max_entities)
+                               CL_ExpandEntities(enumber);
+               }
+               // look up the entity
+               ent = cl_entities + enumber;
+               // slide the current into the previous slot
+               ent->state_previous = ent->state_current;
+               // read the update
+               s = &ent->state_current;
+               if (n & 0x8000)
+               {
+                       // remove entity
+                       *s = defaultstate;
+               }
+               else
+               {
+                       // update entity
+                       EntityState5_ReadUpdate(s);
+               }
+               // set the cl_entities_active flag
+               cl_entities_active[enumber] = s->active;
+               // set the update time
+               s->time = cl.mtime[0];
+               // fix the number (it gets wiped occasionally by copying from defaultstate)
+               s->number = enumber;
+               // check if we need to update the lerp stuff
+               if (s->active)
+                       CL_MoveLerpEntityStates(&cl_entities[enumber]);
+               // print extra messages if desired
+               if (developer_networkentities.integer >= 2 && cl_entities[enumber].state_current.active != cl_entities[enumber].state_previous.active)
+               {
+                       if (cl_entities[enumber].state_current.active)
+                               Con_Printf("entity #%i has become active\n", enumber);
+                       else if (cl_entities[enumber].state_previous.active)
+                               Con_Printf("entity #%i has become inactive\n", enumber);
+               }
+       }
+}
+
+void EntityFrame5_LostFrame(entityframe5_database_t *d, int framenum, int viewentnum)
+{
+       int i, j, k, l, bits;
+       entityframe5_changestate_t *s, *s2;
+       entityframe5_packetlog_t *p, *p2;
+       qbyte statsdeltabits[(MAX_CL_STATS+7)/8];
+       // scan for packets that were lost
+       for (i = 0, p = d->packetlog;i < ENTITYFRAME5_MAXPACKETLOGS;i++, p++)
+       {
+               if (p->packetnumber && p->packetnumber <= framenum)
+               {
+                       // packet was lost - merge deltabits into the main array so they
+                       // will be re-sent, but only if there is no newer update of that
+                       // bit in the logs (as those will arrive before this update)
+                       for (j = 0, s = p->states;j < p->numstates;j++, s++)
+                       {
+                               // check for any newer updates to this entity and mask off any
+                               // overlapping bits (we don't need to send something again if
+                               // it has already been sent more recently)
+                               bits = s->bits & ~d->deltabits[s->number];
+                               for (k = 0, p2 = d->packetlog;k < ENTITYFRAME5_MAXPACKETLOGS && bits;k++, p2++)
+                               {
+                                       if (p2->packetnumber > framenum)
+                                       {
+                                               for (l = 0, s2 = p2->states;l < p2->numstates;l++, s2++)
+                                               {
+                                                       if (s2->number == s->number)
+                                                       {
+                                                               bits &= ~s2->bits;
+                                                               break;
+                                                       }
+                                               }
+                                       }
+                               }
+                               // if the bits haven't all been cleared, there were some bits
+                               // lost with this packet, so set them again now
+                               if (bits)
+                               {
+                                       d->deltabits[s->number] |= bits;
+                                       d->priorities[s->number] = EntityState5_Priority(d, d->states + viewentnum, d->states + s->number, d->deltabits[s->number], d->latestframenum - d->updateframenum[s->number]);
+                               }
+                       }
+                       // mark lost stats
+                       for (j = 0;j < MAX_CL_STATS;j++)
+                       {
+                               for (l = 0;l < (MAX_CL_STATS+7)/8;l++)
+                                       statsdeltabits[l] = p->statsdeltabits[l] & ~d->statsdeltabits[l];
+                               for (k = 0, p2 = d->packetlog;k < ENTITYFRAME5_MAXPACKETLOGS;k++, p2++)
+                                       if (p2->packetnumber > framenum)
+                                               for (l = 0;l < (MAX_CL_STATS+7)/8;l++)
+                                                       statsdeltabits[l] = p->statsdeltabits[l] & ~p2->statsdeltabits[l];
+                               for (l = 0;l < (MAX_CL_STATS+7)/8;l++)
+                                       d->statsdeltabits[l] |= statsdeltabits[l];
+                       }
+                       // delete this packet log as it is now obsolete
+                       p->packetnumber = 0;
+               }
+       }
+}
+
+void EntityFrame5_AckFrame(entityframe5_database_t *d, int framenum)
+{
+       int i;
+       // scan for packets made obsolete by this ack and delete them
+       for (i = 0;i < ENTITYFRAME5_MAXPACKETLOGS;i++)
+               if (d->packetlog[i].packetnumber <= framenum)
+                       d->packetlog[i].packetnumber = 0;
+}
+
+int entityframe5_prioritychaincounts[E5_PROTOCOL_PRIORITYLEVELS];
+unsigned short entityframe5_prioritychains[E5_PROTOCOL_PRIORITYLEVELS][ENTITYFRAME5_MAXSTATES];
+
+void EntityFrame5_WriteFrame(sizebuf_t *msg, entityframe5_database_t *d, int numstates, const entity_state_t *states, int viewentnum, int *stats)
+{
+       const entity_state_t *n;
+       int i, num, l, framenum, packetlognumber, priority;
+       sizebuf_t buf;
+       qbyte data[128];
+       entityframe5_packetlog_t *packetlog;
+
+       framenum = d->latestframenum + 1;
+
+       // if packet log is full, mark all frames as lost, this will cause
+       // it to send the lost data again
+       for (packetlognumber = 0;packetlognumber < ENTITYFRAME5_MAXPACKETLOGS;packetlognumber++)
+               if (d->packetlog[packetlognumber].packetnumber == 0)
+                       break;
+       if (packetlognumber == ENTITYFRAME5_MAXPACKETLOGS)
+       {
+               EntityFrame5_LostFrame(d, framenum, viewentnum);
+               packetlognumber = 0;
+       }
+
+       // prepare the buffer
+       memset(&buf, 0, sizeof(buf));
+       buf.data = data;
+       buf.maxsize = sizeof(data);
+
+       // detect changes in stats
+       for (i = 0;i < MAX_CL_STATS;i++)
+       {
+               if (d->stats[i] != stats[i])
+               {
+                       d->statsdeltabits[i>>3] |= (1<<(i&7));
+                       d->stats[i] = stats[i];
+               }
+       }
+
+       // detect changes in states
+       num = 0;
+       for (i = 0, n = states;i < numstates;i++, n++)
+       {
+               // mark gaps in entity numbering as removed entities
+               for (;num < n->number;num++)
+               {
+                       // if the entity used to exist, clear it
+                       if (CHECKPVSBIT(d->visiblebits, num))
+                       {
+                               CLEARPVSBIT(d->visiblebits, num);
+                               d->deltabits[num] = E5_FULLUPDATE;
+                               d->priorities[num] = EntityState5_Priority(d, d->states + viewentnum, d->states + num, d->deltabits[num], framenum - d->updateframenum[num]);
+                               d->states[num] = defaultstate;
+                               d->states[num].number = num;
+                       }
+               }
+               // update the entity state data
+               if (!CHECKPVSBIT(d->visiblebits, num))
+               {
+                       // entity just spawned in, don't let it completely hog priority
+                       // because of being ancient on the first frame
+                       d->updateframenum[num] = framenum;
+               }
+               SETPVSBIT(d->visiblebits, num);
+               d->deltabits[num] |= EntityState5_DeltaBits(d->states + num, n);
+               d->priorities[num] = EntityState5_Priority(d, d->states + viewentnum, d->states + num, d->deltabits[num], framenum - d->updateframenum[num]);
+               d->states[num] = *n;
+               d->states[num].number = num;
+               // advance to next entity so the next iteration doesn't immediately remove it
+               num++;
+       }
+       // all remaining entities are dead
+       for (;num < sv.num_edicts;num++)
+       {
+               if (CHECKPVSBIT(d->visiblebits, num))
+               {
+                       CLEARPVSBIT(d->visiblebits, num);
+                       d->deltabits[num] = E5_FULLUPDATE;
+                       d->priorities[num] = EntityState5_Priority(d, d->states + viewentnum, d->states + num, d->deltabits[num], framenum - d->updateframenum[num]);
+                       d->states[num] = defaultstate;
+                       d->states[num].number = num;
+               }
+       }
+
+       // build lists of entities by priority level
+       memset(entityframe5_prioritychaincounts, 0, sizeof(entityframe5_prioritychaincounts));
+       l = 0;
+       for (num = 0;num < sv.num_edicts;num++)
+       {
+               if (d->priorities[num])
+               {
+                       l = num;
+                       priority = d->priorities[num];
+                       if (entityframe5_prioritychaincounts[priority] < ENTITYFRAME5_MAXSTATES)
+                               entityframe5_prioritychains[priority][entityframe5_prioritychaincounts[priority]++] = num;
+               }
+       }
+
+       // add packetlog entry
+       packetlog = d->packetlog + packetlognumber;
+       packetlog->packetnumber = framenum;
+       packetlog->numstates = 0;
+       // write stat updates
+       if (sv.protocol == PROTOCOL_DARKPLACES6)
+       {
+               for (i = 0;i < MAX_CL_STATS;i++)
+               {
+                       if (d->statsdeltabits[i>>3] & (1<<(i&7)))
+                       {
+                               d->statsdeltabits[i>>3] &= ~(1<<(i&7));
+                               packetlog->statsdeltabits[i>>3] |= (1<<(i&7));
+                               if (d->stats[i] >= 0 && d->stats[i] < 256)
+                               {
+                                       MSG_WriteByte(msg, svc_updatestatubyte);
+                                       MSG_WriteByte(msg, i);
+                                       MSG_WriteByte(msg, d->stats[i]);
+                               }
+                               else
+                               {
+                                       MSG_WriteByte(msg, svc_updatestat);
+                                       MSG_WriteByte(msg, i);
+                                       MSG_WriteLong(msg, d->stats[i]);
+                               }
+                       }
+               }
+       }
+       // write state updates
+       d->latestframenum = framenum;
+       MSG_WriteByte(msg, svc_entities);
+       MSG_WriteLong(msg, framenum);
+       for (priority = E5_PROTOCOL_PRIORITYLEVELS - 1;priority >= 0 && packetlog->numstates < ENTITYFRAME5_MAXSTATES;priority--)
+       {
+               for (i = 0;i < entityframe5_prioritychaincounts[priority] && packetlog->numstates < ENTITYFRAME5_MAXSTATES;i++)
+               {
+                       num = entityframe5_prioritychains[priority][i];
+                       n = d->states + num;
+                       if (d->deltabits[num] & E5_FULLUPDATE)
+                               d->deltabits[num] = E5_FULLUPDATE | EntityState5_DeltaBits(&defaultstate, n);
+                       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)
+                               continue;
+                       // write entity to the packet
+                       SZ_Write(msg, buf.data, buf.cursize);
+                       // mark age on entity for prioritization
+                       d->updateframenum[num] = framenum;
+                       // log entity so deltabits can be restored later if lost
+                       packetlog->states[packetlog->numstates].number = num;
+                       packetlog->states[packetlog->numstates].bits = d->deltabits[num];
+                       packetlog->numstates++;
+                       // clear deltabits and priority so it won't be sent again
+                       d->deltabits[num] = 0;
+                       d->priorities[num] = 0;
+               }
+       }
+       MSG_WriteShort(msg, 0x8000);
 }