net_vcr.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20 // net_vcr.c
  21
  22 #include "quakedef.h"
  23 #include "net_vcr.h"
  24
  25 extern int vcrFile;
  26
  27 // This is the playback portion of the VCR.  It reads the file produced
  28 // by the recorder and plays it back to the host.  The recording contains
  29 // everything necessary (events, timestamps, and data) to duplicate the game
  30 // from the viewpoint of everything above the network layer.
  31
  32 static struct
  33 {
  34         double  time;
  35         int             op;
  36         long    session;
  37 }       next;
  38
  39 int VCR_Init (void)
  40 {
  41         net_drivers[0].Init = VCR_Init;
  42
  43         net_drivers[0].SearchForHosts = VCR_SearchForHosts;
  44         net_drivers[0].Connect = VCR_Connect;
  45         net_drivers[0].CheckNewConnections = VCR_CheckNewConnections;
  46         net_drivers[0].QGetMessage = VCR_GetMessage;
  47         net_drivers[0].QSendMessage = VCR_SendMessage;
  48         net_drivers[0].CanSendMessage = VCR_CanSendMessage;
  49         net_drivers[0].Close = VCR_Close;
  50         net_drivers[0].Shutdown = VCR_Shutdown;
  51
  52         Sys_FileRead(vcrFile, &next, sizeof(next));
  53         return 0;
  54 }
  55
  56 void VCR_ReadNext (void)
  57 {
  58         if (Sys_FileRead(vcrFile, &next, sizeof(next)) == 0)
  59         {
  60                 next.op = 255;
  61                 Sys_Error ("=== END OF PLAYBACK===\n");
  62         }
  63         if (next.op < 1 || next.op > VCR_MAX_MESSAGE)
  64                 Sys_Error ("VCR_ReadNext: bad op");
  65 }
  66
  67
  68 void VCR_Listen (qboolean state)
  69 {
  70 }
  71
  72
  73 void VCR_Shutdown (void)
  74 {
  75 }
  76
  77
  78 int VCR_GetMessage (qsocket_t *sock)
  79 {
  80         int     ret;
  81
  82         if (host_time != next.time || next.op != VCR_OP_GETMESSAGE || next.session != *(long *)(&sock->driverdata))
  83                 Sys_Error ("VCR missmatch");
  84
  85         Sys_FileRead(vcrFile, &ret, sizeof(int));
  86         if (ret != 1)
  87         {
  88                 VCR_ReadNext ();
  89                 return ret;
  90         }
  91
  92         Sys_FileRead(vcrFile, &net_message.cursize, sizeof(int));
  93         Sys_FileRead(vcrFile, net_message.data, net_message.cursize);
  94
  95         VCR_ReadNext ();
  96
  97         return 1;
  98 }
  99
 100
 101 int VCR_SendMessage (qsocket_t *sock, sizebuf_t *data)
 102 {
 103         int     ret;
 104
 105         if (host_time != next.time || next.op != VCR_OP_SENDMESSAGE || next.session != *(long *)(&sock->driverdata))
 106                 Sys_Error ("VCR missmatch");
 107
 108         Sys_FileRead(vcrFile, &ret, sizeof(int));
 109
 110         VCR_ReadNext ();
 111
 112         return ret;
 113 }
 114
 115
 116 qboolean VCR_CanSendMessage (qsocket_t *sock)
 117 {
 118         qboolean        ret;
 119
 120         if (host_time != next.time || next.op != VCR_OP_CANSENDMESSAGE || next.session != *(long *)(&sock->driverdata))
 121                 Sys_Error ("VCR missmatch");
 122
 123         Sys_FileRead(vcrFile, &ret, sizeof(int));
 124
 125         VCR_ReadNext ();
 126
 127         return ret;
 128 }
 129
 130
 131 void VCR_Close (qsocket_t *sock)
 132 {
 133 }
 134
 135
 136 void VCR_SearchForHosts (qboolean xmit)
 137 {
 138 }
 139
 140
 141 qsocket_t *VCR_Connect (char *host)
 142 {
 143         return NULL;
 144 }
 145
 146
 147 qsocket_t *VCR_CheckNewConnections (void)
 148 {
 149         qsocket_t       *sock;
 150
 151         if (host_time != next.time || next.op != VCR_OP_CONNECT)
 152                 Sys_Error ("VCR missmatch");
 153
 154         if (!next.session)
 155         {
 156                 VCR_ReadNext ();
 157                 return NULL;
 158         }
 159
 160         sock = NET_NewQSocket ();
 161         *(long *)(&sock->driverdata) = next.session;
 162
 163         Sys_FileRead (vcrFile, sock->address, NET_NAMELEN);
 164         VCR_ReadNext ();
 165
 166         return sock;
 167 }