mirror of
https://git.code.sf.net/p/quake/quake2forge
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727 lines
17 KiB
C
727 lines
17 KiB
C
/*
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Copyright (C) 1997-2001 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "server.h"
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/*
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=============================================================================
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Encode a client frame onto the network channel
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=============================================================================
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*/
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#if 0
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// because there can be a lot of projectiles, there is a special
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// network protocol for them
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#define MAX_PROJECTILES 64
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edict_t *projectiles[MAX_PROJECTILES];
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int numprojs;
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cvar_t *sv_projectiles;
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qboolean SV_AddProjectileUpdate (edict_t *ent)
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{
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if (!sv_projectiles)
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sv_projectiles = Cvar_Get("sv_projectiles", "1", 0);
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if (!sv_projectiles->value)
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return false;
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if (!(ent->svflags & SVF_PROJECTILE))
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return false;
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if (numprojs == MAX_PROJECTILES)
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return true;
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projectiles[numprojs++] = ent;
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return true;
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}
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void SV_EmitProjectileUpdate (sizebuf_t *msg)
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{
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byte bits[16]; // [modelindex] [48 bits] xyz p y 12 12 12 8 8 [entitynum] [e2]
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int n, i;
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edict_t *ent;
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int x, y, z, p, yaw;
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int len;
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if (!numprojs)
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return;
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MSG_WriteByte (msg, numprojs);
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for (n=0 ; n<numprojs ; n++)
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{
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ent = projectiles[n];
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x = (int)(ent->s.origin[0]+4096)>>1;
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y = (int)(ent->s.origin[1]+4096)>>1;
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z = (int)(ent->s.origin[2]+4096)>>1;
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p = (int)(256*ent->s.angles[0]/360)&255;
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yaw = (int)(256*ent->s.angles[1]/360)&255;
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len = 0;
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bits[len++] = x;
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bits[len++] = (x>>8) | (y<<4);
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bits[len++] = (y>>4);
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bits[len++] = z;
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bits[len++] = (z>>8);
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if (ent->s.effects & EF_BLASTER)
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bits[len-1] |= 64;
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if (ent->s.old_origin[0] != ent->s.origin[0] ||
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ent->s.old_origin[1] != ent->s.origin[1] ||
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ent->s.old_origin[2] != ent->s.origin[2]) {
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bits[len-1] |= 128;
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x = (int)(ent->s.old_origin[0]+4096)>>1;
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y = (int)(ent->s.old_origin[1]+4096)>>1;
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z = (int)(ent->s.old_origin[2]+4096)>>1;
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bits[len++] = x;
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bits[len++] = (x>>8) | (y<<4);
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bits[len++] = (y>>4);
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bits[len++] = z;
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bits[len++] = (z>>8);
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}
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bits[len++] = p;
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bits[len++] = yaw;
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bits[len++] = ent->s.modelindex;
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bits[len++] = (ent->s.number & 0x7f);
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if (ent->s.number > 255) {
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bits[len-1] |= 128;
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bits[len++] = (ent->s.number >> 7);
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}
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for (i=0 ; i<len ; i++)
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MSG_WriteByte (msg, bits[i]);
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}
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}
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#endif
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/*
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=============
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SV_EmitPacketEntities
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Writes a delta update of an entity_state_t list to the message.
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=============
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*/
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void SV_EmitPacketEntities (client_frame_t *from, client_frame_t *to, sizebuf_t *msg)
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{
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entity_state_t *oldent = NULL, *newent = NULL;
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int oldindex, newindex;
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int oldnum, newnum;
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int from_num_entities;
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int bits;
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#if 0
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if (numprojs)
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MSG_WriteByte (msg, svc_packetentities2);
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else
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#endif
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MSG_WriteByte (msg, svc_packetentities);
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if (!from)
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from_num_entities = 0;
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else
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from_num_entities = from->num_entities;
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newindex = 0;
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oldindex = 0;
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while (newindex < to->num_entities || oldindex < from_num_entities)
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{
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if (newindex >= to->num_entities)
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newnum = 9999;
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else
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{
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newent = &svs.client_entities[(to->first_entity+newindex)%svs.num_client_entities];
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newnum = newent->number;
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}
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if (oldindex >= from_num_entities)
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oldnum = 9999;
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else
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{
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oldent = &svs.client_entities[(from->first_entity+oldindex)%svs.num_client_entities];
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oldnum = oldent->number;
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}
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if (newnum == oldnum)
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{ // delta update from old position
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// because the force parm is false, this will not result
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// in any bytes being emited if the entity has not changed at all
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// note that players are always 'newentities', this updates their oldorigin always
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// and prevents warping
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MSG_WriteDeltaEntity (oldent, newent, msg, false, newent->number <= maxclients->value);
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oldindex++;
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newindex++;
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continue;
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}
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if (newnum < oldnum)
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{ // this is a new entity, send it from the baseline
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MSG_WriteDeltaEntity (&sv.baselines[newnum], newent, msg, true, true);
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newindex++;
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continue;
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}
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if (newnum > oldnum)
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{ // the old entity isn't present in the new message
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bits = U_REMOVE;
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if (oldnum >= 256)
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bits |= U_NUMBER16 | U_MOREBITS1;
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MSG_WriteByte (msg, bits&255 );
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if (bits & 0x0000ff00)
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MSG_WriteByte (msg, (bits>>8)&255 );
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if (bits & U_NUMBER16)
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MSG_WriteShort (msg, oldnum);
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else
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MSG_WriteByte (msg, oldnum);
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oldindex++;
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continue;
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}
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}
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MSG_WriteShort (msg, 0); // end of packetentities
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#if 0
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if (numprojs)
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SV_EmitProjectileUpdate(msg);
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#endif
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}
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/*
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=============
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SV_WritePlayerstateToClient
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=============
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*/
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void SV_WritePlayerstateToClient (client_frame_t *from, client_frame_t *to, sizebuf_t *msg)
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{
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int i;
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int pflags;
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player_state_t *ps, *ops;
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player_state_t dummy;
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int statbits;
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ps = &to->ps;
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if (!from)
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{
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memset (&dummy, 0, sizeof(dummy));
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ops = &dummy;
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}
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else
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ops = &from->ps;
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//
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// determine what needs to be sent
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//
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pflags = 0;
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if (ps->pmove.pm_type != ops->pmove.pm_type)
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pflags |= PS_M_TYPE;
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if (ps->pmove.origin[0] != ops->pmove.origin[0]
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|| ps->pmove.origin[1] != ops->pmove.origin[1]
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|| ps->pmove.origin[2] != ops->pmove.origin[2] )
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pflags |= PS_M_ORIGIN;
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if (ps->pmove.velocity[0] != ops->pmove.velocity[0]
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|| ps->pmove.velocity[1] != ops->pmove.velocity[1]
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|| ps->pmove.velocity[2] != ops->pmove.velocity[2] )
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pflags |= PS_M_VELOCITY;
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if (ps->pmove.pm_time != ops->pmove.pm_time)
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pflags |= PS_M_TIME;
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if (ps->pmove.pm_flags != ops->pmove.pm_flags)
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pflags |= PS_M_FLAGS;
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if (ps->pmove.gravity != ops->pmove.gravity)
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pflags |= PS_M_GRAVITY;
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if (ps->pmove.delta_angles[0] != ops->pmove.delta_angles[0]
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|| ps->pmove.delta_angles[1] != ops->pmove.delta_angles[1]
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|| ps->pmove.delta_angles[2] != ops->pmove.delta_angles[2] )
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pflags |= PS_M_DELTA_ANGLES;
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if (ps->viewoffset[0] != ops->viewoffset[0]
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|| ps->viewoffset[1] != ops->viewoffset[1]
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|| ps->viewoffset[2] != ops->viewoffset[2] )
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pflags |= PS_VIEWOFFSET;
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if (ps->viewangles[0] != ops->viewangles[0]
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|| ps->viewangles[1] != ops->viewangles[1]
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|| ps->viewangles[2] != ops->viewangles[2] )
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pflags |= PS_VIEWANGLES;
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if (ps->kick_angles[0] != ops->kick_angles[0]
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|| ps->kick_angles[1] != ops->kick_angles[1]
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|| ps->kick_angles[2] != ops->kick_angles[2] )
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pflags |= PS_KICKANGLES;
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if (ps->blend[0] != ops->blend[0]
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|| ps->blend[1] != ops->blend[1]
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|| ps->blend[2] != ops->blend[2]
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|| ps->blend[3] != ops->blend[3] )
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pflags |= PS_BLEND;
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if (ps->fov != ops->fov)
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pflags |= PS_FOV;
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if (ps->rdflags != ops->rdflags)
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pflags |= PS_RDFLAGS;
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if (ps->gunframe != ops->gunframe)
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pflags |= PS_WEAPONFRAME;
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pflags |= PS_WEAPONINDEX;
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//
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// write it
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//
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MSG_WriteByte (msg, svc_playerinfo);
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MSG_WriteShort (msg, pflags);
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//
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// write the pmove_state_t
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//
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if (pflags & PS_M_TYPE)
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MSG_WriteByte (msg, ps->pmove.pm_type);
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if (pflags & PS_M_ORIGIN)
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{
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MSG_WriteShort (msg, ps->pmove.origin[0]);
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MSG_WriteShort (msg, ps->pmove.origin[1]);
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MSG_WriteShort (msg, ps->pmove.origin[2]);
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}
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if (pflags & PS_M_VELOCITY)
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{
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MSG_WriteShort (msg, ps->pmove.velocity[0]);
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MSG_WriteShort (msg, ps->pmove.velocity[1]);
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MSG_WriteShort (msg, ps->pmove.velocity[2]);
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}
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if (pflags & PS_M_TIME)
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MSG_WriteByte (msg, ps->pmove.pm_time);
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if (pflags & PS_M_FLAGS)
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MSG_WriteByte (msg, ps->pmove.pm_flags);
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if (pflags & PS_M_GRAVITY)
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MSG_WriteShort (msg, ps->pmove.gravity);
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if (pflags & PS_M_DELTA_ANGLES)
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{
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MSG_WriteShort (msg, ps->pmove.delta_angles[0]);
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MSG_WriteShort (msg, ps->pmove.delta_angles[1]);
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MSG_WriteShort (msg, ps->pmove.delta_angles[2]);
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}
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//
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// write the rest of the player_state_t
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//
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if (pflags & PS_VIEWOFFSET)
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{
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MSG_WriteChar (msg, ps->viewoffset[0]*4);
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MSG_WriteChar (msg, ps->viewoffset[1]*4);
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MSG_WriteChar (msg, ps->viewoffset[2]*4);
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}
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if (pflags & PS_VIEWANGLES)
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{
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MSG_WriteAngle16 (msg, ps->viewangles[0]);
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MSG_WriteAngle16 (msg, ps->viewangles[1]);
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MSG_WriteAngle16 (msg, ps->viewangles[2]);
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}
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if (pflags & PS_KICKANGLES)
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{
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MSG_WriteChar (msg, ps->kick_angles[0]*4);
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MSG_WriteChar (msg, ps->kick_angles[1]*4);
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MSG_WriteChar (msg, ps->kick_angles[2]*4);
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}
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if (pflags & PS_WEAPONINDEX)
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{
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MSG_WriteByte (msg, ps->gunindex);
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}
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if (pflags & PS_WEAPONFRAME)
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{
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MSG_WriteByte (msg, ps->gunframe);
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MSG_WriteChar (msg, ps->gunoffset[0]*4);
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MSG_WriteChar (msg, ps->gunoffset[1]*4);
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MSG_WriteChar (msg, ps->gunoffset[2]*4);
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MSG_WriteChar (msg, ps->gunangles[0]*4);
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MSG_WriteChar (msg, ps->gunangles[1]*4);
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MSG_WriteChar (msg, ps->gunangles[2]*4);
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}
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if (pflags & PS_BLEND)
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{
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MSG_WriteByte (msg, ps->blend[0]*255);
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MSG_WriteByte (msg, ps->blend[1]*255);
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MSG_WriteByte (msg, ps->blend[2]*255);
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MSG_WriteByte (msg, ps->blend[3]*255);
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}
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if (pflags & PS_FOV)
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MSG_WriteByte (msg, ps->fov);
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if (pflags & PS_RDFLAGS)
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MSG_WriteByte (msg, ps->rdflags);
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// send stats
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statbits = 0;
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for (i=0 ; i<MAX_STATS ; i++)
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if (ps->stats[i] != ops->stats[i])
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statbits |= 1<<i;
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MSG_WriteLong (msg, statbits);
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for (i=0 ; i<MAX_STATS ; i++)
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if (statbits & (1<<i) )
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MSG_WriteShort (msg, ps->stats[i]);
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}
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/*
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==================
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SV_WriteFrameToClient
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==================
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*/
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void SV_WriteFrameToClient (client_t *client, sizebuf_t *msg)
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{
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client_frame_t *frame, *oldframe;
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int lastframe;
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//Com_Printf ("%i -> %i\n", client->lastframe, sv.framenum);
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// this is the frame we are creating
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frame = &client->frames[sv.framenum & UPDATE_MASK];
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if (client->lastframe <= 0)
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{ // client is asking for a retransmit
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oldframe = NULL;
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lastframe = -1;
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}
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else if (sv.framenum - client->lastframe >= (UPDATE_BACKUP - 3) )
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{ // client hasn't gotten a good message through in a long time
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// Com_Printf ("%s: Delta request from out-of-date packet.\n", client->name);
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oldframe = NULL;
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lastframe = -1;
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}
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else
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{ // we have a valid message to delta from
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oldframe = &client->frames[client->lastframe & UPDATE_MASK];
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lastframe = client->lastframe;
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}
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MSG_WriteByte (msg, svc_frame);
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MSG_WriteLong (msg, sv.framenum);
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MSG_WriteLong (msg, lastframe); // what we are delta'ing from
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MSG_WriteByte (msg, client->surpressCount); // rate dropped packets
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client->surpressCount = 0;
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// send over the areabits
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MSG_WriteByte (msg, frame->areabytes);
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SZ_Write (msg, frame->areabits, frame->areabytes);
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// delta encode the playerstate
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SV_WritePlayerstateToClient (oldframe, frame, msg);
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// delta encode the entities
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SV_EmitPacketEntities (oldframe, frame, msg);
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}
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/*
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=============================================================================
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Build a client frame structure
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=============================================================================
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*/
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byte fatpvs[65536/8]; // 32767 is MAX_MAP_LEAFS
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/*
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============
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SV_FatPVS
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The client will interpolate the view position,
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so we can't use a single PVS point
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===========
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*/
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void SV_FatPVS (vec3_t org)
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{
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int leafs[64];
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int i, j, count;
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int longs;
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byte *src;
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vec3_t mins, maxs;
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for (i=0 ; i<3 ; i++)
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{
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mins[i] = org[i] - 8;
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maxs[i] = org[i] + 8;
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}
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count = CM_BoxLeafnums (mins, maxs, leafs, 64, NULL);
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if (count < 1)
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Com_Error (ERR_FATAL, "SV_FatPVS: count < 1");
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longs = (CM_NumClusters()+31)>>5;
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// convert leafs to clusters
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for (i=0 ; i<count ; i++)
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leafs[i] = CM_LeafCluster(leafs[i]);
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memcpy (fatpvs, CM_ClusterPVS(leafs[0]), longs<<2);
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// or in all the other leaf bits
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for (i=1 ; i<count ; i++)
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{
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for (j=0 ; j<i ; j++)
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if (leafs[i] == leafs[j])
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break;
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if (j != i)
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continue; // already have the cluster we want
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src = CM_ClusterPVS(leafs[i]);
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for (j=0 ; j<longs ; j++)
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((long *)fatpvs)[j] |= ((long *)src)[j];
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}
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}
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/*
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=============
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SV_BuildClientFrame
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Decides which entities are going to be visible to the client, and
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copies off the playerstat and areabits.
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=============
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*/
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void SV_BuildClientFrame (client_t *client)
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{
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int e, i;
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vec3_t org;
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edict_t *ent;
|
|
edict_t *clent;
|
|
client_frame_t *frame;
|
|
entity_state_t *state;
|
|
int l;
|
|
int clientarea, clientcluster;
|
|
int leafnum;
|
|
int c_fullsend;
|
|
byte *clientphs;
|
|
byte *bitvector;
|
|
|
|
clent = client->edict;
|
|
if (!clent->client)
|
|
return; // not in game yet
|
|
|
|
#if 0
|
|
numprojs = 0; // no projectiles yet
|
|
#endif
|
|
|
|
// this is the frame we are creating
|
|
frame = &client->frames[sv.framenum & UPDATE_MASK];
|
|
|
|
frame->senttime = svs.realtime; // save it for ping calc later
|
|
|
|
// find the client's PVS
|
|
for (i=0 ; i<3 ; i++)
|
|
org[i] = clent->client->ps.pmove.origin[i]*0.125 + clent->client->ps.viewoffset[i];
|
|
|
|
leafnum = CM_PointLeafnum (org);
|
|
clientarea = CM_LeafArea (leafnum);
|
|
clientcluster = CM_LeafCluster (leafnum);
|
|
|
|
// calculate the visible areas
|
|
frame->areabytes = CM_WriteAreaBits (frame->areabits, clientarea);
|
|
|
|
// grab the current player_state_t
|
|
frame->ps = clent->client->ps;
|
|
|
|
|
|
SV_FatPVS (org);
|
|
clientphs = CM_ClusterPHS (clientcluster);
|
|
|
|
// build up the list of visible entities
|
|
frame->num_entities = 0;
|
|
frame->first_entity = svs.next_client_entities;
|
|
|
|
c_fullsend = 0;
|
|
|
|
for (e=1 ; e<ge->num_edicts ; e++)
|
|
{
|
|
ent = EDICT_NUM(e);
|
|
|
|
// ignore ents without visible models
|
|
if (ent->svflags & SVF_NOCLIENT)
|
|
continue;
|
|
|
|
// ignore ents without visible models unless they have an effect
|
|
if (!ent->s.modelindex && !ent->s.effects && !ent->s.sound
|
|
&& !ent->s.event)
|
|
continue;
|
|
|
|
// ignore if not touching a PV leaf
|
|
if (ent != clent)
|
|
{
|
|
// check area
|
|
if (!CM_AreasConnected (clientarea, ent->areanum))
|
|
{ // doors can legally straddle two areas, so
|
|
// we may need to check another one
|
|
if (!ent->areanum2
|
|
|| !CM_AreasConnected (clientarea, ent->areanum2))
|
|
continue; // blocked by a door
|
|
}
|
|
|
|
// beams just check one point for PHS
|
|
if (ent->s.renderfx & RF_BEAM)
|
|
{
|
|
l = ent->clusternums[0];
|
|
if ( !(clientphs[l >> 3] & (1 << (l&7) )) )
|
|
continue;
|
|
}
|
|
else
|
|
{
|
|
// FIXME: if an ent has a model and a sound, but isn't
|
|
// in the PVS, only the PHS, clear the model
|
|
if (ent->s.sound)
|
|
{
|
|
bitvector = fatpvs; //clientphs;
|
|
}
|
|
else
|
|
bitvector = fatpvs;
|
|
|
|
if (ent->num_clusters == -1)
|
|
{ // too many leafs for individual check, go by headnode
|
|
if (!CM_HeadnodeVisible (ent->headnode, bitvector))
|
|
continue;
|
|
c_fullsend++;
|
|
}
|
|
else
|
|
{ // check individual leafs
|
|
for (i=0 ; i < ent->num_clusters ; i++)
|
|
{
|
|
l = ent->clusternums[i];
|
|
if (bitvector[l >> 3] & (1 << (l&7) ))
|
|
break;
|
|
}
|
|
if (i == ent->num_clusters)
|
|
continue; // not visible
|
|
}
|
|
|
|
if (!ent->s.modelindex)
|
|
{ // don't send sounds if they will be attenuated away
|
|
vec3_t delta;
|
|
float len;
|
|
|
|
VectorSubtract (org, ent->s.origin, delta);
|
|
len = VectorLength (delta);
|
|
if (len > 400)
|
|
continue;
|
|
}
|
|
}
|
|
}
|
|
|
|
#if 0
|
|
if (SV_AddProjectileUpdate(ent))
|
|
continue; // added as a special projectile
|
|
#endif
|
|
|
|
// add it to the circular client_entities array
|
|
state = &svs.client_entities[svs.next_client_entities%svs.num_client_entities];
|
|
if (ent->s.number != e)
|
|
{
|
|
Com_DPrintf ("FIXING ENT->S.NUMBER!!!\n");
|
|
ent->s.number = e;
|
|
}
|
|
*state = ent->s;
|
|
|
|
// don't mark players missiles as solid
|
|
if (ent->owner == client->edict)
|
|
state->solid = 0;
|
|
|
|
svs.next_client_entities++;
|
|
frame->num_entities++;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
==================
|
|
SV_RecordDemoMessage
|
|
|
|
Save everything in the world out without deltas.
|
|
Used for recording footage for merged or assembled demos
|
|
==================
|
|
*/
|
|
void SV_RecordDemoMessage (void)
|
|
{
|
|
int e;
|
|
edict_t *ent;
|
|
entity_state_t nostate;
|
|
sizebuf_t buf;
|
|
byte buf_data[32768];
|
|
int len;
|
|
|
|
if (!svs.demofile)
|
|
return;
|
|
|
|
memset (&nostate, 0, sizeof(nostate));
|
|
SZ_Init (&buf, buf_data, sizeof(buf_data));
|
|
|
|
// write a frame message that doesn't contain a player_state_t
|
|
MSG_WriteByte (&buf, svc_frame);
|
|
MSG_WriteLong (&buf, sv.framenum);
|
|
|
|
MSG_WriteByte (&buf, svc_packetentities);
|
|
|
|
e = 1;
|
|
ent = EDICT_NUM(e);
|
|
while (e < ge->num_edicts)
|
|
{
|
|
// ignore ents without visible models unless they have an effect
|
|
if (ent->inuse &&
|
|
ent->s.number &&
|
|
(ent->s.modelindex || ent->s.effects || ent->s.sound || ent->s.event) &&
|
|
!(ent->svflags & SVF_NOCLIENT))
|
|
MSG_WriteDeltaEntity (&nostate, &ent->s, &buf, false, true);
|
|
|
|
e++;
|
|
ent = EDICT_NUM(e);
|
|
}
|
|
|
|
MSG_WriteShort (&buf, 0); // end of packetentities
|
|
|
|
// now add the accumulated multicast information
|
|
SZ_Write (&buf, svs.demo_multicast.data, svs.demo_multicast.cursize);
|
|
SZ_Clear (&svs.demo_multicast);
|
|
|
|
// now write the entire message to the file, prefixed by the length
|
|
len = LittleLong (buf.cursize);
|
|
fwrite (&len, 4, 1, svs.demofile);
|
|
fwrite (buf.data, buf.cursize, 1, svs.demofile);
|
|
}
|
|
|