Add notification sound

License of default sound: CC-0
Source: https://www.freesound.org/people/Kastenfrosch/sounds/162482/

api.lua

@@ -227,6 +227,11 @@ function awards.unlock(name, award)
 	local desc = awdef.description or ""
 	local background = awdef.background or "awards_bg_default.png"
 	local icon = awdef.icon or "awards_unknown.png"
+	local sound = awdef.sound
+	if sound == nil then
+		-- Explicit check for nil because sound could be `false` to disable it
+		sound = {name="awards_got_generic", gain=0.25}
+	end
 	local custom_announce = awdef.custom_announce
 	if not custom_announce then
 		if awdef.secret then
@@ -237,6 +242,15 @@ function awards.unlock(name, award)
 	end
 
 	-- Do Notification
+	if sound then
+		-- Enforce sound delay to prevent sound spamming
+		local lastsound = awards.players[name].lastsound
+		if lastsound == nil or os.difftime(os.time(), lastsound) >= 1 then
+			minetest.sound_play(sound, {to_player=name})
+			awards.players[name].lastsound = os.time()
+		end
+	end
+
 	if awards.show_mode == "formspec" then
 		-- use a formspec to send it
 		minetest.show_formspec(name, "achievements:unlocked", "size[4,2]"..

readme.md

@@ -13,7 +13,8 @@ old fork in Carbone, under same license.
 * awards.register_achievement(name, def)
 	* name
 	* desciption
-	* sound [optional]
+	* sound [optional] - set a custom sound (SimpleSoundSpec) or `false` to play no sound.
+          If not specified, a default sound is played
 	* image [optional] - texture name, eg: award_one.png
 	* background [optional] - texture name, eg: award_one.png
 	* trigger [optional] [table]