hud = {}

-- HUD statbar values
hud.armor = {}
hud.armor_out = {}

-- HUD item ids
local armor_hud = {}
local armor_hud_bg = {}

HUD_TICK = 0.1

--load custom settings
local set = io.open(minetest.get_modpath("hbarmor").."/hud.conf", "r")
if set then 
	dofile(minetest.get_modpath("hbarmor").."/hud.conf")
	set:close()
end

local function custom_hud(player)
 local name = player:get_player_name()

 if minetest.setting_getbool("enable_damage") then
       armor_hud_bg[name] = player:hud_add({
		hud_elem_type = "statbar",
		position = HUD_ARMOR_POS,
		size = HUD_SIZE,
		text = "hud_armor_bg.png",
		number = 0,
		alignment = {x=-1,y=-1},
		offset = HUD_ARMOR_OFFSET,
	})
	armor_hud[name] = player:hud_add({
		hud_elem_type = "statbar",
		position = HUD_ARMOR_POS,
		size = HUD_SIZE,
		text = "hud_armor_fg.png",
		number = 0,
		alignment = {x=-1,y=-1},
		offset = HUD_ARMOR_OFFSET,
	})
 end
end

--needs to be defined for older version of 3darmor
function hud.set_armor()
end


dofile(minetest.get_modpath("hbarmor").."/armor.lua")

-- update hud elemtens if value has changed
local function update_hud(player)
	local name = player:get_player_name()
 --armor
	local arm_out = tonumber(hud.armor_out[name])
	if not arm_out then arm_out = 0 end
	local arm = tonumber(hud.armor[name])
	if not arm then arm = 0 end
	if arm_out ~= arm then
		hud.armor_out[name] = arm
		player:hud_change(armor_hud[name], "number", arm)
		-- hide armor bar completely when there is none
		if (not armor.def[name].count or armor.def[name].count == 0) and arm == 0 then
		 player:hud_change(armor_hud_bg[name], "number", 0)
		else
		 player:hud_change(armor_hud_bg[name], "number", 20)
		end
	end
end

minetest.register_on_joinplayer(function(player)
	local name = player:get_player_name()
	hud.armor[name] = 0
	hud.armor_out[name] = 0
	custom_hud(player)
end)

minetest.register_on_respawnplayer(function(player)
end)

local main_timer = 0
local timer = 0
minetest.after(2.5, function()
	minetest.register_globalstep(function(dtime)
	 main_timer = main_timer + dtime
	 timer = timer + dtime
		if main_timer > HUD_TICK or timer > 4 then
		 if main_timer > HUD_TICK then main_timer = 0 end
		 for _,player in ipairs(minetest.get_connected_players()) do
			local name = player:get_player_name()

			-- only proceed if damage is enabled
			if minetest.setting_getbool("enable_damage") then
			 hud.get_armor(player)

			 -- update all hud elements
			 update_hud(player)
			
			end
		 end
		
		end
		if timer > 4 then timer = 0 end
	end)
end)