demo recording: stuff csprogs.dat files into .dem files so demos can always be played...

[xonotic/darkplaces.git] / csprogs.c

diff --git a/csprogs.c b/csprogs.c
index 69b9734c55309880158dd2f6f3012227f9a16fb3..92408e48cb67f9d79c6302481e3330642529ae6d 100644 (file)
--- a/csprogs.c
+++ b/csprogs.c
@@ -664,6 +664,46 @@ qboolean CL_VM_CB_LoadEdict(prvm_edict_t *ent)
 
 void Cmd_ClearCsqcFuncs (void);
 
+// returns true if the packet is valid, false if end of file is reached
+// used for dumping the CSQC download into demo files
+qboolean MakeDownloadPacket(const char *filename, void *data, unsigned long len, int crc, int cnt, sizebuf_t *buf, int protocol)
+{
+       int packetsize = buf->maxsize - 7; // byte short long
+       int npackets = (len + packetsize - 1) / (packetsize);
+
+       if(protocol == PROTOCOL_QUAKEWORLD)
+               return false; // CSQC can't run in QW anyway
+
+       SZ_Clear(buf);
+       if(cnt == 0)
+       {
+               MSG_WriteByte(buf, svc_stufftext);
+               MSG_WriteString(buf, va("\ncl_downloadbegin %lu %s\n", len, filename));
+               return true;
+       }
+       else if(cnt >= 1 && cnt <= npackets)
+       {
+               unsigned long thispacketoffset = (cnt - 1) * packetsize;
+               int thispacketsize = len - thispacketoffset;
+               if(thispacketsize > packetsize)
+                       thispacketsize = packetsize;
+
+               MSG_WriteByte(buf, svc_downloaddata);
+               MSG_WriteLong(buf, thispacketoffset);
+               MSG_WriteShort(buf, thispacketsize);
+               SZ_Write(buf, data + thispacketoffset, thispacketsize);
+
+               return true;
+       }
+       else if(cnt == npackets + 1)
+       {
+               MSG_WriteByte(buf, svc_stufftext);
+               MSG_WriteString(buf, va("\ncl_downloadfinished %lu %d\n", len, crc));
+               return true;
+       }
+       return false;
+}
+
 void CL_VM_Init (void)
 {
        const char* csprogsfn;
@@ -696,16 +736,19 @@ void CL_VM_Init (void)
        if (csprogsdata)
        {
                csprogsdatacrc = CRC_Block(csprogsdata, csprogsdatasize);
-               Mem_Free(csprogsdata);
                if (csprogsdatacrc != requiredcrc || csprogsdatasize != requiredsize)
                {
                        if (cls.demoplayback)
                        {
                                Con_Printf("^1Warning: Your %s is not the same version as the demo was recorded with (CRC/size are %i/%i but should be %i/%i)\n", csqc_progname.string, csprogsdatacrc, (int)csprogsdatasize, requiredcrc, requiredsize);
-                               return;
+                               // Mem_Free(csprogsdata);
+                               // return;
+                               // We WANT to continue here, and play the demo with different csprogs!
+                               // After all, this is just a warning. Sure things may go wrong from here.
                        }
                        else
                        {
+                               Mem_Free(csprogsdata);
                                Con_Printf("^1Your %s is not the same version as the server (CRC is %i/%i but should be %i/%i)\n", csqc_progname.string, csprogsdatacrc, (int)csprogsdatasize, requiredcrc, requiredsize);
                                CL_Disconnect();
                                return;
@@ -759,11 +802,30 @@ void CL_VM_Init (void)
                CL_VM_Error("CSQC %s ^2failed to load\n", csprogsfn);
                if(!sv.active)
                        CL_Disconnect();
+               Mem_Free(csprogsdata);
                return;
        }
 
        Con_Printf("CSQC %s ^5loaded (crc=%i, size=%i)\n", csprogsfn, csprogsdatacrc, (int)csprogsdatasize);
 
+       if(cls.demorecording)
+       {
+               int i;
+               char buf[NET_MAXMESSAGE];
+               sizebuf_t sb;
+               void *demobuf; fs_offset_t demofilesize;
+
+               sb.data = (void *) buf;
+               sb.maxsize = sizeof(buf);
+               i = 0;
+
+               CL_CutDemo(&demobuf, &demofilesize);
+               while(MakeDownloadPacket(csprogsfn, csprogsdata, csprogsdatasize, csprogsdatacrc, i++, &sb, cls.protocol))
+                       CL_WriteDemoMessage(&sb);
+               CL_PasteDemo(&demobuf, &demofilesize);
+       }
+       Mem_Free(csprogsdata);
+
        // check if OP_STATE animation is possible in this dat file
        if (prog->fieldoffsets.nextthink >= 0 && prog->fieldoffsets.frame >= 0 && prog->fieldoffsets.think >= 0 && prog->globaloffsets.self >= 0)
                prog->flag |= PRVM_OP_STATE;