Play sound when hitting other player with arrow

mods/ITEMS/mcl_throwing/README.txt

@@ -1,10 +1,13 @@
 This mod adds bows, arrows and throwable items for MineClone 2.
 
 License:
-Source code: LGPL 3.0
-Textures: See MineClone 2 license notes.
-Everything else: MIT License
-
-Incorporates code from the [bow] mod by Arcelmi.
+* Source code: LGPL 3.0
+    * Incorporates code from the [bow] mod by Arcelmi.
       https://github.com/Arcelmi/minetest-bows
 
+* Textures: See MineClone 2 license notes.
+* Sounds:
+    * mcl_throwing_bow_shoot.ogg: MIT License
+    * mcl_throwing_hit_player.ogg: CC BY 3.0 by Freesound.org user tim.kahn.
+      https://freesound.org/people/tim.kahn/sounds/38495/
+      http://creativecommons.org/licenses/by/3.0/

mods/ITEMS/mcl_throwing/arrow.lua

@@ -100,9 +100,16 @@ THROWING_ARROW_ENTITY.on_step = function(self, dtime)
 					full_punch_interval=1.0,
 					damage_groups={fleshy=self._damage},
 				}, nil)
-				if mod_mcl_hunger and is_player then
+
+				if is_player then
+					if self._shooter and self._shooter:is_player() then
+						-- “Ding” sound for hitting another player
+						minetest.sound_play({name="mcl_throwing_hit_player", gain=0.1}, {to_player=self._shooter})
+					end
+					if mod_mcl_hunger then
 						mcl_hunger.exhaust(obj:get_player_name(), mcl_hunger.EXHAUST_DAMAGE)
 					end
+				end
 
 				if lua then
 					local entity_name = lua.name