Tweaked the sounds to dampen the volume (#18773)

Tweaked the sounds to dampen the volume depending on what is present
between the source and the destination, accounts for walls/doors/windows

Testmerge as I am not sure how expensive doing this would be

Based on feedback and inputs from Read

code/game/sound.dm

@@ -107,9 +107,43 @@
 
 	for(var/mob/listening_mob in listeners | dead_players_by_zlevel[source_z])//observers always hear through walls
 		if(get_dist(listening_mob, turf_source) <= maxdistance)
-			listening_mob.playsound_local(turf_source, soundin, vol, vary, frequency, falloff_exponent, channel, pressure_affected, S, maxdistance, falloff_distance, 1, use_reverb)
+			//Aurora snowflake, if we don't ignore the walls, account for wall-like obstacles to dampen the sound
+			if(ignore_walls)
+				listening_mob.playsound_local(turf_source, soundin, vol, vary, frequency, falloff_exponent, channel, pressure_affected, S, maxdistance, falloff_distance, 1, use_reverb)
+			else
+				adjust_sound_based_on_path_obstacles(listening_mob, turf_source, soundin, vol, vary, frequency, falloff_exponent, channel, pressure_affected, S, maxdistance, falloff_distance, use_reverb)
+
 			. += listening_mob
 
+/**
+ * This proc takes into account walls, windows and similar when deciding the received sound for a mob,
+ *
+ * this is *NOT* meant to be called directly, use `playsound()`
+ *
+ * Use this to tweak what happens with the sound along the path from the emitter to the receiver of said sound
+ */
+/proc/adjust_sound_based_on_path_obstacles(mob/listening_mob, turf/turf_source, soundin, vol, vary, frequency, falloff_exponent, channel, pressure_affected, S, maxdistance, falloff_distance, use_reverb)
+	var/turf/inbetween_turf = get_turf(listening_mob)
+
+	for(var/step_counter in 1 to get_dist(listening_mob, turf_source))
+		inbetween_turf = get_step_towards(inbetween_turf, turf_source)
+
+		if(istype(inbetween_turf, /turf/simulated/wall))
+			vol *= 0.6
+
+		if(locate(/obj/machinery/door) in inbetween_turf)
+			vol *= 0.7
+
+		if(locate(/obj/structure/window) in inbetween_turf)
+			vol *= 0.75
+
+		//If we're at or below zero, no point continuing, no sound
+		if(vol <= 0)
+			return
+
+	listening_mob.playsound_local(turf_source, soundin, vol, vary, frequency, falloff_exponent, channel, pressure_affected, S, maxdistance, falloff_distance, 1, use_reverb)
+
+
 /mob/proc/playsound_local(turf/turf_source, soundin, vol as num, vary, frequency, falloff_exponent = SOUND_FALLOFF_EXPONENT, channel = 0, pressure_affected = TRUE, sound/sound_to_use, max_distance, falloff_distance = SOUND_DEFAULT_FALLOFF_DISTANCE, distance_multiplier = 1, use_reverb = TRUE)
 	if(!client || !can_hear())
 		return

html/changelogs/fluffyghost-tweaksounddampening.yml

@@ -0,0 +1,41 @@
+################################
+# Example Changelog File
+#
+# Note: This file, and files beginning with ".", and files that don't end in ".yml" will not be read. If you change this file, you will look really dumb.
+#
+# Your changelog will be merged with a master changelog. (New stuff added only, and only on the date entry for the day it was merged.)
+# When it is, any changes listed below will disappear.
+#
+# Valid Prefixes:
+#   bugfix
+#   wip (For works in progress)
+#   tweak
+#   soundadd
+#   sounddel
+#   rscadd (general adding of nice things)
+#   rscdel (general deleting of nice things)
+#   imageadd
+#   imagedel
+#   maptweak
+#   spellcheck (typo fixes)
+#   experiment
+#   balance
+#   admin
+#   backend
+#   security
+#   refactor
+#################################
+
+# Your name.
+author: FluffyGhost, ReadThisNamePlz
+
+# Optional: Remove this file after generating master changelog.  Useful for PR changelogs that won't get used again.
+delete-after: True
+
+# Any changes you've made.  See valid prefix list above.
+# INDENT WITH TWO SPACES.  NOT TABS.  SPACES.
+# SCREW THIS UP AND IT WON'T WORK.
+# Also, all entries are changed into a single [] after a master changelog generation. Just remove the brackets when you add new entries.
+# Please surround your changes in  double quotes ("), as certain characters otherwise screws up compiling. The quotes will not show up in the changelog.
+changes:
+  - backend: "Tweaked the sounds to dampen the volume depending on what is present between the source and the destination, accounts for walls/doors/windows."