Add arrow fly by sounds

LICENSE.txt

@@ -543,6 +543,12 @@ GNU Lesser General Public License v2.1 or later
 - x_bows_quiver.8.ogg
 - x_bows_quiver.9.ogg
 
+**CC0-1.0, Kinoton**, https://freesound.org/people/Kinoton/sounds/427979/
+
+- x_bows_arrow_flyby.1.ogg
+- x_bows_arrow_flyby.2.ogg
+- x_bows_arrow_flyby.3.ogg
+
 ### Models
 
 **CC-BY-SA-4.0, by SaKeL**

api.lua

@@ -924,6 +924,9 @@ function XBowsEntityDef.on_activate(self, selfObj, staticdata, dtime_s)
     selfObj._arrow_particle_effect = x_bows_registered_arrow_def.custom.particle_effect
     selfObj._arrow_particle_effect_crit = x_bows_registered_arrow_def.custom.particle_effect_crit
     selfObj._arrow_particle_effect_fast = x_bows_registered_arrow_def.custom.particle_effect_fast
+    selfObj._flyby_sound_played = {
+        ['player_name'] = true
+    }
 
     ---Bow Def
     local x_bows_registered_bow_def = self.registered_bows[selfObj._bow_name]
@@ -1119,6 +1122,28 @@ function XBowsEntityDef.on_step(self, selfObj, dtime)
         local in_pos = pointed_thing.intersection_normal
         selfObj.pointed_thing = pointed_thing
 
+        if not selfObj._attached then
+            for _, object in ipairs(minetest.get_objects_inside_radius(selfObj.object:get_pos(), 5)) do
+                if object:is_player()
+                    and object:get_hp() > 0
+                    and object:get_player_name() ~= selfObj._user:get_player_name()
+                    and not selfObj._flyby_sound_played[object:get_player_name()]
+                then
+                    selfObj._flyby_sound_played[object:get_player_name()] = true
+
+                    local p1 = selfObj.object:get_pos()
+                    local p2 = object:get_pos()
+                    local distance = math.round(vector.distance(p1, p2))
+                    local gain = 1 / distance
+
+                    minetest.sound_play('x_bows_arrow_flyby', {
+                        to_player = object:get_player_name(),
+                        gain = gain
+                    }, true)
+                end
+            end
+        end
+
         if pointed_thing.type == 'object'
             and pointed_thing.ref ~= selfObj.object
             and pointed_thing.ref:get_hp() > 0