sv_demo.c

   1 #include "quakedef.h"
   2 #include "sv_demo.h"
   3
   4 void SV_StartDemoRecording(client_t *client, const char *filename, int forcetrack)
   5 {
   6         char name[MAX_QPATH];
   7
   8         if(client->sv_demo_file != NULL)
   9                 return; // we already have a demo
  10
  11         strlcpy(name, filename, sizeof(name));
  12         FS_DefaultExtension(name, ".dem", sizeof(name));
  13
  14         Con_Printf("Recording demo for # %d (%s) to %s\n", PRVM_NUM_FOR_EDICT(client->edict), client->netaddress, name);
  15
  16         client->sv_demo_file = FS_OpenRealFile(name, "wb", false);
  17         if(!client->sv_demo_file)
  18         {
  19                 Con_Print("ERROR: couldn't open.\n");
  20                 return;
  21         }
  22
  23         FS_Printf(client->sv_demo_file, "%i\n", forcetrack);
  24 }
  25
  26 void SV_WriteDemoMessage(client_t *client, sizebuf_t *sendbuffer, qboolean clienttoserver)
  27 {
  28         int len, i;
  29         float f;
  30
  31         if(client->sv_demo_file == NULL)
  32                 return;
  33         if(sendbuffer->cursize == 0)
  34                 return;
  35
  36         len = LittleLong(sendbuffer->cursize | (clienttoserver ? DEMOMSG_CLIENT_TO_SERVER : 0));
  37         FS_Write(client->sv_demo_file, &len, 4);
  38         for(i = 0; i < 3; ++i)
  39         {
  40                 f = LittleFloat(client->edict->fields.server->v_angle[i]);
  41                 FS_Write(client->sv_demo_file, &f, 4);
  42         }
  43         FS_Write(client->sv_demo_file, sendbuffer->data, sendbuffer->cursize);
  44 }
  45
  46 void SV_StopDemoRecording(client_t *client)
  47 {
  48         sizebuf_t buf;
  49         unsigned char bufdata[64];
  50
  51         if(client->sv_demo_file == NULL)
  52                 return;
  53
  54         buf.data = bufdata;
  55         buf.maxsize = sizeof(bufdata);
  56         SZ_Clear(&buf);
  57         MSG_WriteByte(&buf, svc_disconnect);
  58         SV_WriteDemoMessage(client, &buf, false);
  59
  60         FS_Close(client->sv_demo_file);
  61         client->sv_demo_file = NULL;
  62         Con_Printf("Stopped recording demo for # %d (%s)\n", PRVM_NUM_FOR_EDICT(client->edict), client->netaddress);
  63 }
  64
  65 void SV_WriteNetnameIntoDemo(client_t *client)
  66 {
  67         // This "pseudo packet" is written so a program can easily find out whose demo this is
  68         sizebuf_t buf;
  69         unsigned char bufdata[128];
  70
  71         if(client->sv_demo_file == NULL)
  72                 return;
  73
  74         buf.data = bufdata;
  75         buf.maxsize = sizeof(bufdata);
  76         SZ_Clear(&buf);
  77         MSG_WriteByte(&buf, svc_stufftext);
  78         MSG_WriteUnterminatedString(&buf, "\n// this demo contains the point of view of: ");
  79         MSG_WriteUnterminatedString(&buf, client->name);
  80         MSG_WriteString(&buf, "\n");
  81         SV_WriteDemoMessage(client, &buf, false);
  82 }