sv_demo.c

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#include "quakedef.h"
#include "sv_demo.h"
 
extern cvar_t sv_autodemo_perclient_discardable;
 
void SV_StartDemoRecording(client_t *client, const char *filename, int forcetrack)
{
    prvm_prog_t *prog = SVVM_prog;
    char name[MAX_QPATH];
 
    if(client->sv_demo_file != NULL)
        return; // we already have a demo
 
    dp_strlcpy(name, filename, sizeof(name));
    FS_DefaultExtension(name, ".dem", sizeof(name));
 
    Con_Printf("Recording demo for # %d (%s) to %s\n", PRVM_NUM_FOR_EDICT(client->edict), client->netaddress, name);
 
    // Reset discardable flag for every new demo.
    PRVM_serveredictfloat(client->edict, discardabledemo) = 0;
 
    client->sv_demo_file = FS_OpenRealFile(name, "wb", false);
    if(!client->sv_demo_file)
    {
        Con_Print(CON_ERROR "ERROR: couldn't open.\n");
        return;
    }
 
    FS_Printf(client->sv_demo_file, "%i\n", forcetrack);
}
 
void SV_WriteDemoMessage(client_t *client, sizebuf_t *sendbuffer, qbool clienttoserver)
{
    prvm_prog_t *prog = SVVM_prog;
    int len, i;
    float f;
    int temp;
 
    if(client->sv_demo_file == NULL)
        return;
    if(sendbuffer->cursize == 0)
        return;
    
    temp = sendbuffer->cursize | (clienttoserver ? DEMOMSG_CLIENT_TO_SERVER : 0);
    len = LittleLong(temp);
    FS_Write(client->sv_demo_file, &len, 4);
    for(i = 0; i < 3; ++i)
    {
        f = LittleFloat(PRVM_serveredictvector(client->edict, v_angle)[i]);
        FS_Write(client->sv_demo_file, &f, 4);
    }
    FS_Write(client->sv_demo_file, sendbuffer->data, sendbuffer->cursize);
}
 
void SV_StopDemoRecording(client_t *client)
{
    prvm_prog_t *prog = SVVM_prog;
    sizebuf_t buf;
    unsigned char bufdata[64];
 
    if(client->sv_demo_file == NULL)
        return;
    
    buf.data = bufdata;
    buf.maxsize = sizeof(bufdata);
    SZ_Clear(&buf);
    MSG_WriteByte(&buf, svc_disconnect);
    SV_WriteDemoMessage(client, &buf, false);
 
    if (sv_autodemo_perclient_discardable.integer && PRVM_serveredictfloat(client->edict, discardabledemo))
    {
        FS_RemoveOnClose(client->sv_demo_file);
        Con_Printf("Stopped recording discardable demo for # %d (%s)\n", PRVM_NUM_FOR_EDICT(client->edict), client->netaddress);
    }
    else
        Con_Printf("Stopped recording demo for # %d (%s)\n", PRVM_NUM_FOR_EDICT(client->edict), client->netaddress);
 
    FS_Close(client->sv_demo_file);
    client->sv_demo_file = NULL;
}
 
void SV_WriteNetnameIntoDemo(client_t *client)
{
    // This "pseudo packet" is written so a program can easily find out whose demo this is
    sizebuf_t buf;
    unsigned char bufdata[MAX_SCOREBOARDNAME + 64];
 
    if(client->sv_demo_file == NULL)
        return;
 
    buf.data = bufdata;
    buf.maxsize = sizeof(bufdata);
    SZ_Clear(&buf);
    MSG_WriteByte(&buf, svc_stufftext);
    MSG_WriteUnterminatedString(&buf, "\n// this demo contains the point of view of: ");
    MSG_WriteUnterminatedString(&buf, client->name);
    MSG_WriteString(&buf, "\n");
    SV_WriteDemoMessage(client, &buf, false);
}