local math, vector, minetest, mcl_mobs = math, vector, minetest, mcl_mobs
local mob_class = mcl_mobs.mob_class
-- play sound
function mob_class:mob_sound(soundname, is_opinion, fixed_pitch)

	local soundinfo
	if self.sounds_child and self.child then
		soundinfo = self.sounds_child
	elseif self.sounds then
		soundinfo = self.sounds
	end
	if not soundinfo then
		return
	end
	local sound = soundinfo[soundname]
	if sound then
		if is_opinion and self.opinion_sound_cooloff > 0 then
			return
		end
		local pitch
		if not fixed_pitch then
			local base_pitch = soundinfo.base_pitch
			if not base_pitch then
				base_pitch = 1
			end
			if self.child and (not self.sounds_child) then
				-- Children have higher pitch
				pitch = base_pitch * 1.5
			else
				pitch = base_pitch
			end
			-- randomize the pitch a bit
			pitch = pitch + math.random(-10, 10) * 0.005
		end
		minetest.sound_play(sound, {
			object = self.object,
			gain = 1.0,
			max_hear_distance = self.sounds.distance,
			pitch = pitch,
		}, true)
		self.opinion_sound_cooloff = 1
	end
end