Fixed compatibility issues with Scourge Done Slick:

- Implement Sys_DoubleTime with a clock function that keeps running and doesn't update only once per frame. Fixes infinite loop in Host_ShutdownServer.
- Readded missing "play" and "playvol" console commands.
- Ignore console messages that contain only whitespace.

Assets/Scripts/Modules/SystemModule.cs

@@ -30,6 +30,9 @@ public partial class SystemModule
 
     private void Print(string message)
     {
+        if (string.IsNullOrWhiteSpace(message))
+            return;
+        
         uq.AddLog(message);
     }
 

Assets/Scripts/UniQuake.cs

@@ -22,7 +22,7 @@ public partial class UniQuake: MonoBehaviour
     /// <summary>
     /// Time since startup for this particular instance of Quake
     /// </summary>
-    public double CurrentTime => Time.timeAsDouble - startTime;
+    public double CurrentTime => Time.realtimeSinceStartupAsDouble - startTime;
 
     private Action<string> logHandler;
     private StringBuilder logBuffer = new StringBuilder();
@@ -74,7 +74,7 @@ public partial class UniQuake: MonoBehaviour
         quakeParms.SetArguments(arguments.ToArray());
         quakeParms.AllocateMemory(memorySize);
 
-        startTime = Time.timeAsDouble;
+        startTime = Time.realtimeSinceStartupAsDouble;
 
         try
         {

engine/Quake/snd_dma.c

@@ -28,10 +28,11 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 #include "snd_codec.h"
 #include "bgmusic.h"
 
-#ifndef USE_FMOD
-
 static void S_Play (void);
 static void S_PlayVol (void);
+
+#ifndef USE_FMOD
+
 static void S_SoundList (void);
 static void S_Update_ (void);
 void S_StopAllSounds (qboolean clear);
@@ -197,9 +198,9 @@ void S_Init (void)
 
 	Con_Printf("\nSound Initialization\n");
 
-#ifndef USE_FMOD
 	Cmd_AddCommand("play", S_Play);
 	Cmd_AddCommand("playvol", S_PlayVol);
+#ifndef USE_FMOD
 	Cmd_AddCommand("stopsound", S_StopAllSoundsC);
 	Cmd_AddCommand("soundlist", S_SoundList);
 	Cmd_AddCommand("soundinfo", S_SoundInfo_f);
@@ -977,6 +978,8 @@ void S_UnblockSound (void)
 	}
 }
 
+#endif	// USE_FMOD
+
 /*
 ===============================================================================
 
@@ -1029,6 +1032,8 @@ static void S_PlayVol (void)
 	}
 }
 
+#ifndef USE_FMOD
+
 static void S_SoundList (void)
 {
 	int		i;