Stop controller rumble when sound buffer is cleared

(e.g. when SCR_ModalMessage is called)

Author: andrei-drexler

Quake/q_sound.h

@@ -111,6 +111,7 @@ void S_EndPrecaching (void);
 void S_PaintChannels (int endtime);
 float S_GetLoFreqLevel (void);
 float S_GetHiFreqLevel (void);
+void S_ClearFilteredLevels (void);
 
 /* picks a channel based on priorities, empty slots, number of channels */
 channel_t *SND_PickChannel (int entnum, int entchannel);

Quake/snd_dma.c

@@ -578,6 +578,7 @@ void S_ClearBuffer (void)
 	if (!sound_started || !shm)
 		return;
 
+	S_ClearFilteredLevels ();
 	SNDDMA_LockBuffer ();
 	if (! shm->buffer)
 		return;

Quake/snd_mix.c

@@ -415,6 +415,12 @@ float S_GetHiFreqLevel (void)
 	return snd_hifreqlevel;
 }
 
+void S_ClearFilteredLevels (void)
+{
+	snd_lofreqlevel = 0.f;
+	snd_hifreqlevel = 0.f;
+}
+
 /*
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