makes it plausible to hear most sounds while inside of a VR sleeper (#8034)

code/game/sound.dm

@@ -27,7 +27,10 @@
 		if(get_dist(M, turf_source) <= maxdistance)
 			M.playsound_local(turf_source, soundin, vol, vary, frequency, falloff, channel, pressure_affected, S, soundenvwet, soundenvdry)
 
-/mob/proc/playsound_local(turf/turf_source, soundin, vol as num, vary, frequency, falloff, channel = 0, pressure_affected = TRUE, sound/S, envwet = -10000, envdry = 0)
+/mob/proc/playsound_local(turf/turf_source, soundin, vol as num, vary, frequency, falloff, channel = 0, pressure_affected = TRUE, sound/S, envwet = -10000, envdry = 0, manual_x, manual_y)
+	if(audiovisual_redirect)
+		var/turf/T = get_turf(src)
+		audiovisual_redirect.playsound_local(turf_source, soundin, vol, vary, frequency, falloff, channel, pressure_affected, S, 0, -1000, turf_source.x - T.x, turf_source.y - T.y)
 	if(!client || !can_hear())
 		return
 
@@ -49,7 +52,9 @@
 		var/turf/T = get_turf(src)
 
 		//sound volume falloff with distance
-		var/distance = get_dist(T, turf_source)
+		var/distance = 0
+		if(!manual_x && !manual_y)
+			distance = get_dist(T, turf_source)
 
 		S.volume -= max(distance - world.view, 0) * 2 //multiplicative falloff to add on top of natural audio falloff.
 
@@ -77,9 +82,17 @@
 		if(S.volume <= 0)
 			return //No sound
 
-		var/dx = turf_source.x - T.x // Hearing from the right/left
+		var/dx = 0 // Hearing from the right/left
+		if(!manual_x)
+			dx = turf_source.x - T.x
+		else
+			dx = manual_x
 		S.x = dx
-		var/dz = turf_source.y - T.y // Hearing from infront/behind
+		var/dz = 0 // Hearing from infront/behind
+		if(!manual_x)
+			dz = turf_source.y - T.y
+		else
+			dz = manual_y
 		S.z = dz
 		// The y value is for above your head, but there is no ceiling in 2d spessmens.
 		S.y = 1