Added the sound of inputting PIN code to ATM's on_rightclick(), and the cound of counting cash at cash deposit and withdrawal

atm.lua

@@ -244,6 +244,7 @@ minetest.register_node("global_exchange:atm_bottom", {
 	end,
 	groups = {cracky=2, atm = 1},
 	on_rightclick = function(pos, _, clicker)
+		minetest.sound_play("atm_beep", {pos = pos})
 		minetest.show_formspec(clicker:get_player_name(), atm_form, main_menu(clicker:get_player_name()))
 	end,
 })

exchange_machine.lua

@@ -204,6 +204,7 @@ minetest.after(0, function()
       local old_balance = exchange:get_balance(p_name)
       local balance = bills2balance(stack, p_name)
       exchange:change_balance(p_name, balance - old_balance)
+      minetest.sound_play("atm_cash", {to_player = p_name})
       local stacks = inv:get_list('money')
       local tens = math.floor(balance/10)
       if tens > 0 then
@@ -250,6 +251,7 @@ minetest.after(0, function()
         delta = count * 10
       end
       exchange:change_balance(p_name, -delta) --let's hope it always returns success
+      minetest.sound_play("atm_cash", {to_player = p_name})
     end
     minetest.show_formspec(p_name, "global_exchange:atm_form", cash_fs(p_name)) --redraw with new balance
   end,

sounds/LICENSE

@@ -0,0 +1,2 @@
+File atm_beep.ogg is a derivative work from a sound file 'dialing 3.aiff' uploaded by 'benjaminharveydesign' to http://freesound.org under a Creative Commons 0 license.
+File atm_cash.ogg is a derivative work from a sound file 'ATM.wav' uploaded by 'LG' to http://freesound.org under a Creative Commons Attribution license.