Sound Additions + Tweaks

Changes listed below:
* Makes Death Sounds mutable on their own audio channel.
* Makes Ear Ringing use the HUD Channel for sounds

Additions:
* [Adds On Fire effect](https://streamable.com/c1fxeo)
* Adds Stunned effect(https://streamable.com/v2if0s)
* [Adds SMES humming based on power usage in/out. Affected by walls, will only play if in LOS and visible.](https://streamable.com/z41x90)
* [Adds Atmos Alerts making a noise on the monitor](https://streamable.com/uhegq6)
* [Tcomms + PDA servers hum when powered and active, also respects walls/LOS](https://streamable.com/vb08x1)
* [Fridges hum quietly while powered](https://streamable.com/c3zsz7)
* [Point Defense turrets now make a sound audible from inside the station when firing, to add more spice to meteor waves.](https://streamable.com/bf8mwl)
* Shield Generators now hum when active.

code/datums/looping_sounds/_looping_sound.dm

@@ -36,6 +36,7 @@
 	var/pref_check
 	var/volume_chan //CHOMPedit
 	var/exclusive
+	var/falloff // CHOMPEdit: Add Falloff
 
 	var/timerid
 	var/started
@@ -106,7 +107,7 @@
 					continue
 			SEND_SOUND(thing, S)
 		else
-			playsound(thing, S, volume, vary, extra_range, ignore_walls = !opacity_check, preference = pref_check, volume_channel = volume_chan) // CHOMPEdit - Weather volume channel
+			playsound(thing, S, volume, vary, extra_range, falloff = falloff, ignore_walls = !opacity_check, preference = pref_check, volume_channel = volume_chan) // CHOMPEdit - Weather volume channel CHOMPEdit again: falloff
 
 /datum/looping_sound/proc/get_sound(starttime, _mid_sounds)
 	if(!_mid_sounds)

code/datums/looping_sounds/machinery_sounds.dm

@@ -115,3 +115,37 @@
 	mid_length = 6
 	end_sound = 'sound/machines/vehicle/engine_end.ogg'
 	volume = 20
+
+// CHOMPAdd: Fridges!
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/datum/looping_sound/fridge
+	mid_sounds = list('sound/machines/kitchen/fridge/fridge_loop.ogg' = 1)
+	mid_length = 60
+	volume = 10
+	extra_range = -1 // Short-range
+	pref_check = /datum/client_preference/fridge_hum
+	volume_chan = VOLUME_CHANNEL_MACHINERY_IDLE
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/datum/looping_sound/tcomms
+	start_sound = 'sound/machines/tcomms/tcomms_pulse.ogg'
+	mid_sounds = list('sound/machines/tcomms/tcomms_01.ogg' = 1)
+	mid_length = 20
+	end_sound = 'sound/machines/tcomms/tcomms_pulse.ogg'
+	volume = 40
+	opacity_check = TRUE // We don't want to drown people with noise outside Tcomms
+	falloff = 0.2 // Harsh
+	volume_chan = VOLUME_CHANNEL_MACHINERY_IDLE
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/datum/looping_sound/shield_generator
+	start_sound = 'modular_chomp/sound/machines/shield_hum/shield_generator_whir.ogg'
+	mid_sounds = list('modular_chomp/sound/machines/shield_hum/shield_generator_hum2.ogg', 'modular_chomp/sound/machines/shield_hum/shield_generator_hum3.ogg')
+	mid_length = 60
+	end_sound = 'modular_chomp/sound/machines/shield_hum/shield_generator_whir.ogg'
+	volume = 40
+	volume_chan = VOLUME_CHANNEL_MACHINERY
+	exclusive = TRUE

code/datums/looping_sounds/mob_sounds.dm

@@ -5,7 +5,7 @@
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 
 /datum/looping_sound/mob
-	// volume_chan = VOLUME_CHANNEL_INJ_DEATH // Commented out until pain/etc PR is in
+	// volume_chan = VOLUME_CHANNEL_MOB_SOUNDS
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 
@@ -18,7 +18,7 @@
 	volume = 40
 	direct = TRUE 		// We send this sound directly to the mob, bc they only hear it when they're deaf.
 	exclusive = TRUE	// This should only occur once, because we can only be deafened once.
-	// volume_chan = VOLUME_CHANNEL_INJ_DEATH // Commented out until pain/etc PR is in
+	volume_chan = VOLUME_CHANNEL_HUD_WARNINGS
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 
@@ -29,6 +29,25 @@
 	pref_check = /datum/client_preference/sleep_music
 	direct = TRUE 		// We send this sound directly to the mob, bc they only hear it when they're asleep.
 	exclusive = TRUE	// This should only occur once, because we only want one music loop running while we snooze.
-	// volume_chan = VOLUME_CHANNEL_INJ_DEATH // Commented out until pain/etc PR is in
+	volume_chan = VOLUME_CHANNEL_HUD_WARNINGS
 
 ///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/datum/looping_sound/mob/on_fire
+	mid_sounds = list('sound/effects/mob_effects/on_fire/on_fire_loop.ogg'=1)
+	mid_length = 6 SECONDS
+	end_sound = 'sound/effects/mob_effects/on_fire/fire_extinguish.ogg'
+	volume = 20
+	exclusive = TRUE // This should only occur once, because we only want one loop running while we're on fire, even if we're set on fire multiple times.
+	volume_chan = VOLUME_CHANNEL_INJURY_SOUNDS
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/datum/looping_sound/mob/stunned // Going to hang onto this one for later
+	mid_sounds = list('sound/effects/mob_effects/stun_loop.ogg'=1)
+	mid_length = 3 SECONDS
+	volume = 70
+	direct = TRUE // Send this one directly to the mob, only applies when we're Weakened()
+	exclusive = TRUE // This should only occur once, because we only want one loop running.
+	volume_chan = VOLUME_CHANNEL_HUD_WARNINGS
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////