Use demo title as filename for multiplayer replays

src/d_main.c

@@ -1529,6 +1529,8 @@ void D_SRB2Main(void)
 		// as having been modified for the first game.
 		M_PushSpecialParameters(); // push all "+" parameter at the command buffer
 
+		strncpy(connectedservername, cv_servername.string, MAXSERVERNAME);
+
 		if (M_CheckParm("-gametype") && M_IsNextParm())
 		{
 			// from Command_Map_f

src/g_game.c

@@ -288,7 +288,7 @@ UINT32 timesBeatenWithEmeralds;
 //UINT32 timesBeatenUltimate;
 
 //@TODO put these all in a struct for namespacing purposes?
-static char demoname[64];
+static char demoname[128];
 char demotitle[65];
 boolean demorecording, demosaved, demodefersave, demoplayback;
 boolean demo_loadfiles, demo_ignorefiles; // Demo file loading options
@@ -7625,6 +7625,45 @@ void G_SaveDemo(void)
 	M_Memcpy(p, demotitle, 64); // Write demo title here
 	p += 64;
 
+	if (multiplayer)
+	{
+		// Change the demo's name to be a slug of the title
+		char demo_slug[128];
+		char *writepoint;
+		size_t i, strindex = 0;
+		boolean dash = true;
+
+		for (i = 0; demotitle[i] && i < 127; i++)
+		{
+			if ((demotitle[i] >= 'a' && demotitle[i] <= 'z') || (demotitle[i] >= '0' && demotitle[i] <= '9'))
+			{
+				demo_slug[strindex] = demotitle[i];
+				strindex++;
+				dash = false;
+			}
+			else if (demotitle[i] >= 'A' && demotitle[i] <= 'Z')
+			{
+				demo_slug[strindex] = demotitle[i] + 'a' - 'A';
+				strindex++;
+				dash = false;
+			}
+			else if (!dash)
+			{
+				demo_slug[strindex] = '-';
+				strindex++;
+				dash = true;
+			}
+		}
+
+		demo_slug[strindex] = 0;
+		if (dash) demo_slug[strindex-1] = 0;
+		CONS_Printf("%s\n%s\n", demotitle, demo_slug);
+
+		writepoint = strstr(demoname, "-") + 1;
+		demo_slug[128 - (writepoint - demoname) - 4] = 0;
+		sprintf(writepoint, "%s.lmp", demo_slug);
+	}
+
 #ifdef NOMD5
 	for (i = 0; i < 16; i++, p++)
 		*p = M_RandomByte(); // This MD5 was chosen by fair dice roll and most likely < 50% correct.

src/m_menu.c

@@ -7579,6 +7579,8 @@ static void M_StartServer(INT32 choice)
 
 	multiplayer = true;
 
+	strncpy(connectedservername, cv_servername.string, MAXSERVERNAME);
+
 	// Still need to reset devmode
 	cv_debug = 0;