void ClearStateToDefault(entity_state_t *s)
{
+ s->active = 0;
s->time = 0;
VectorClear(s->origin);
VectorClear(s->angles);
s->scale = 16;
s->glowsize = 0;
s->glowcolor = 254;
- s->colormod = 255;
s->flags = 0;
- s->active = 0;
+}
+
+// (server) clears the database to contain no frames (thus delta compression compresses against nothing)
+void EntityFrame_ClearDatabase(entity_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)
+{
+ int i;
+ if (d->ackframe < frame)
+ d->ackframe = frame;
+ for (i = 0;i < d->numframes && d->frames[i].framenum < frame;i++);
+ // ignore outdated frame acks (out of order packets)
+ if (i == 0)
+ return;
+ d->numframes -= i;
+ // if some queue is left, slide it down to beginning of array
+ if (d->numframes)
+ memmove(&d->frames[0], &d->frames[i], sizeof(d->frames[0]) * d->numframes);
+}
+
+// (server) clears frame, to prepare for adding entities
+void EntityFrame_Clear(entity_frame_t *f, vec3_t eye)
+{
+ f->time = 0;
+ f->framenum = 0;
+ 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)
+{
+ int i, n;
+ EntityFrame_Clear(f, NULL);
+ for (i = 0;i < d->numframes && d->frames[i].framenum < framenum;i++);
+ if (i < d->numframes && framenum == d->frames[i].framenum)
+ {
+ f->framenum = framenum;
+ f->numentities = d->frames[i].endentity - d->frames[i].firstentity;
+ n = MAX_ENTITY_DATABASE - (d->frames[i].firstentity % MAX_ENTITY_DATABASE);
+ if (n > f->numentities)
+ n = f->numentities;
+ memcpy(f->entitydata, d->entitydata + d->frames[i].firstentity % MAX_ENTITY_DATABASE, sizeof(*f->entitydata) * n);
+ if (f->numentities > n)
+ 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)
+{
+ int n, e;
+ entity_frameinfo_t *info;
+
+ VectorCopy(f->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)
+ {
+ // ran out of room, dump database
+ EntityFrame_ClearDatabase(d);
+ }
+ }
+
+ info = &d->frames[d->numframes];
+ info->framenum = f->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");
+ else
+ Con_Printf("EntityFrame_AddFrame: out of sequence frames in database\n");
+ return;
+ }
+ e = d->frames[n].framenum;
+ }
+ // if database still has frames after that...
+ if (d->numframes)
+ info->firstentity = d->frames[d->numframes - 1].endentity;
+ else
+ info->firstentity = 0;
+ info->endentity = info->firstentity + f->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));
+}
+
+// (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)
+{
+ int i, onum, bits, number;
+ entity_frame_t *o = &deltaframe;
+ entity_state_t *ent, *delta, baseline;
+
+ EntityFrame_AddFrame(d, f);
+
+ 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]);
+
+ onum = 0;
+ for (i = 0;i < f->numentities;i++)
+ {
+ ent = f->entitydata + i;
+ number = ent->number;
+ for (;onum < o->numentities && o->entitydata[onum].number < number;onum++)
+ {
+ // write remove message
+ MSG_WriteShort(msg, o->entitydata[onum].number | 0x8000);
+ }
+ if (onum < o->numentities && (o->entitydata[onum].number == number))
+ {
+ // delta from previous frame
+ delta = o->entitydata + onum;
+ // advance to next entity in delta frame
+ onum++;
+ }
+ 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);
+ }
+ }
+ for (;onum < o->numentities;onum++)
+ {
+ // write remove message
+ MSG_WriteShort(msg, o->entitydata[onum].number | 0x8000);
+ }
+ MSG_WriteShort(msg, 0xFFFF);
+}
+
+// (client) reads a frame from network stream
+static entity_frame_t framedata; // FIXME?
+void EntityFrame_Read(entity_database_t *d)
+{
+ int number, removed, bits;
+ entity_frame_t *f = &framedata, *delta = &deltaframe;
+ entity_state_t *e, baseline, *old, *oldend;
+
+ ClearStateToDefault(&baseline);
+
+ EntityFrame_Clear(f, NULL);
+
+ // read the frame header info
+ f->time = cl.mtime[0];
+ number = MSG_ReadLong();
+ f->framenum = MSG_ReadLong();
+ f->eye[0] = MSG_ReadFloat();
+ f->eye[1] = MSG_ReadFloat();
+ f->eye[2] = MSG_ReadFloat();
+ EntityFrame_AckFrame(d, number);
+ EntityFrame_FetchFrame(d, number, delta);
+ old = delta->entitydata;
+ oldend = old + delta->numentities;
+ // read entities until we hit the magic 0xFFFF end tag
+ while ((number = (unsigned short) MSG_ReadShort()) != 0xFFFF)
+ {
+ if (msg_badread)
+ Host_Error("EntityFrame_Read: read error\n");
+ removed = number & 0x8000;
+ number &= 0x7FFF;
+ if (number >= MAX_EDICTS)
+ Host_Error("EntityFrame_Read: number (%i) >= MAX_EDICTS (%i)\n", number, MAX_EDICTS);
+
+ // seek to entity, while copying any skipped entities (assume unchanged)
+ while (old < oldend && old->number < number)
+ {
+ 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++;
+ }
+ if (removed)
+ {
+ if (old < oldend && old->number == number)
+ old++;
+ else
+ Con_Printf("EntityFrame_Read: REMOVE on unused entity %i\n", number);
+ }
+ else
+ {
+ if (f->numentities >= MAX_ENTITY_DATABASE)
+ Host_Error("EntityFrame_Read: entity list too big\n");
+
+ // reserve this slot
+ e = f->entitydata + f->numentities++;
+
+ if (old < oldend && old->number == number)
+ {
+ // delta from old entity
+ memcpy(e, old++, sizeof(*e));
+ }
+ else
+ {
+ // delta from baseline
+ memcpy(e, &baseline, sizeof(*e));
+ }
+
+ e->active = true;
+ e->time = cl.mtime[0];
+ e->number = number;
+
+ bits = MSG_ReadByte();
+ if (bits & E_EXTEND1)
+ {
+ bits |= MSG_ReadByte() << 8;
+ if (bits & E_EXTEND2)
+ {
+ bits |= MSG_ReadByte() << 16;
+ if (bits & E_EXTEND3)
+ bits |= MSG_ReadByte() << 24;
+ }
+ }
+
+ if (dpprotocol == DPPROTOCOL_VERSION2)
+ {
+ 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();
+ }
+ else
+ {
+ if (bits & E_FLAGS)
+ e->flags = MSG_ReadByte();
+ if (e->flags & RENDER_LOWPRECISION || dpprotocol == DPPROTOCOL_VERSION2)
+ {
+ 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();
+ }
+ 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();
+ }
+ }
+ 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();
+ }
+ }
+ while (old < oldend)
+ {
+ 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++;
+ }
+ EntityFrame_AddFrame(d, f);
+}
+
+
+// (client) returns the frame number of the most recent frame recieved
+int EntityFrame_MostRecentlyRecievedFrameNum(entity_database_t *d)
+{
+ if (d->numframes)
+ return d->frames[d->numframes - 1].framenum;
+ else
+ return -1;
}
projects / xonotic / darkplaces.git / blobdiff