+}
+
+void EntityState_Write(entity_state_t *ent, sizebuf_t *msg, entity_state_t *delta)
+{
+ int bits;
+ vec3_t org, deltaorg;
+ if (ent->active)
+ {
+ bits = 0;
+ VectorCopy(ent->origin, org);
+ VectorCopy(delta->origin, deltaorg);
+ if (ent->flags & RENDER_LOWPRECISION)
+ {
+ if (org[0] > 0)
+ org[0] = (int) (org[0] + 0.5f);
+ else
+ org[0] = (int) (org[0] - 0.5f);
+ if (org[1] > 0)
+ org[1] = (int) (org[1] + 0.5f);
+ else
+ org[1] = (int) (org[1] - 0.5f);
+ if (org[2] > 0)
+ org[2] = (int) (org[2] + 0.5f);
+ else
+ org[2] = (int) (org[2] - 0.5f);
+ }
+ if (delta->flags & RENDER_LOWPRECISION)
+ {
+ if (deltaorg[0] > 0)
+ deltaorg[0] = (int) (deltaorg[0] + 0.5f);
+ else
+ deltaorg[0] = (int) (deltaorg[0] - 0.5f);
+ if (deltaorg[1] > 0)
+ deltaorg[1] = (int) (deltaorg[1] + 0.5f);
+ else
+ deltaorg[1] = (int) (deltaorg[1] - 0.5f);
+ if (deltaorg[2] > 0)
+ deltaorg[2] = (int) (deltaorg[2] + 0.5f);
+ else
+ deltaorg[2] = (int) (deltaorg[2] - 0.5f);
+ }
+ if (fabs(org[0] - deltaorg[0]) > 0.01f)
+ bits |= E_ORIGIN1;
+ if (fabs(org[1] - deltaorg[1]) > 0.01f)
+ bits |= E_ORIGIN2;
+ if (fabs(org[2] - deltaorg[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 (ent->tagindex != delta->tagindex || ent->tagentity != delta->tagentity)
+ bits |= E_TAGATTACHMENT;
+
+ 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, ent->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, org[0]);
+ if (bits & E_ORIGIN2)
+ MSG_WriteShort(msg, org[1]);
+ if (bits & E_ORIGIN3)
+ MSG_WriteShort(msg, org[2]);
+ }
+ else
+ {
+ if (bits & E_ORIGIN1)
+ MSG_WriteFloat(msg, org[0]);
+ if (bits & E_ORIGIN2)
+ MSG_WriteFloat(msg, org[1]);
+ if (bits & E_ORIGIN3)
+ MSG_WriteFloat(msg, org[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);
+ if (bits & E_TAGATTACHMENT)
+ {
+ MSG_WriteShort(msg, ent->tagentity);
+ MSG_WriteByte(msg, ent->tagindex);
+ }
+ }
+ }
+ else if (!delta->active)
+ MSG_WriteShort(msg, ent->number | 0x8000);
+}
+
+void EntityState_Read(entity_state_t *e, entity_state_t *delta, int number)
+{
+ int bits;
+ memcpy(e, delta, 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();
+ if (bits & E_TAGATTACHMENT)
+ {
+ e->tagentity = MSG_ReadShort();
+ e->tagindex = MSG_ReadByte();
+ }