-- LUALOCALS < ---------------------------------------------------------
local minetest, nodecore, pairs
    = minetest, nodecore, pairs
-- LUALOCALS > ---------------------------------------------------------

local function wieldsound(player, idx, gain)
	if nodecore.player_visible(player) then
		local n = player:get_inventory():get_stack("main", idx):get_name()
		local def = minetest.registered_items[n]
		if def and def.sounds and def.sounds.dig then
			local t = {}
			for k, v in pairs(def.sounds.dig) do t[k] = v end
			t.object = player
			t.gain = gain or 1
			if player:get_player_control().sneak then t.gain = t.gain / 4 end
			return function() nodecore.sound_play(t.name, t) end
		end
	end
	return function() end
end

local wields = {}
local pending = {}
nodecore.register_playerstep({
		label = "wield sounds",
		action = function(player, data, dtime)
			local pname = data.pname
			local pend = pending[pname]
			if pend then
				pend.t = pend.t - dtime
				if pend.t <= 0 then
					pend.f()
					pending[pname] = nil
					pend = nil
				end
			end

			local idx = player:get_wield_index()
			local old = wields[pname]
			if idx ~= old then
				wields[pname] = idx
				if old and not pend then
					wieldsound(player, old, 0.07)()
				end
				pending[pname] = {
					t = 0.15,
					f = wieldsound(player, idx, 0.15)
				}
			end
		end
	})