sparktech.energy_hud = {}

local spark_dig_stlye_alt = minetest.settings:get_bool("spark_dig_stlye_alt")
local on_use = nil
if spark_dig_stlye_alt then
	on_use = function() return nil end
end

minetest.register_tool("sparkdebug:multimeter", {
												 description = "Multimeter",
												 inventory_image = "multimeter.png",
												 stack_max = 1,
												 on_use = on_use,
												 on_place = function(itemstack, placer, pointed_thing)
													 if pointed_thing["type"] == "node" then
														 sparktech.energy_hud[placer:get_player_name()]["pos"] = pointed_thing["under"]
													 end
													 return itemstack
												 end
})

minetest.register_on_joinplayer(function(player)
		local idx = player:hud_add({
				hud_elem_type = "statbar",
				position = {x = 0.5, y = 0.5},
				offset = {x =-100, y = -40},
				text = "bar_red.png",
				direction = 0,
				size = { x=2, y=20 }, -- looks correct with 2, less is invisble, more is too big :/
				number = 20
		})
		local idy = player:hud_add({
				hud_elem_type = "text",
				position = {x = 0.5, y = 0.5},
				offset = {x = 0, y = -50},
				text = "",
				direction = 0,
				number = "0xFFFFFF"
		})
		local idz = player:hud_add({
				hud_elem_type = "text",
				position = {x = 0.5, y = 0.5},
				offset = {x = 0, y = 50},
				text = "",
				direction = 0,
				number = "0xFFFFFF"
		})
		sparktech.energy_hud[player:get_player_name()] = {idb = idx, idt = idy, idm = idz, pos = {x = 0, y = 0, z = 0}}
end)

minetest.register_globalstep(function(dtime)
		for k, i in pairs(sparktech.energy_hud) do
			local meta = minetest.get_meta(i["pos"])
			local node = minetest.get_node(i["pos"])
			local player = minetest.get_player_by_name(k)
			if player == nil then
				return
			end
			
			player:hud_change(i["idb"], "number", meta:get_int("energy") / minetest.get_item_group(node.name, "sparktech_energy_max") * 400)
			local val = minetest.get_item_group(node.name, "sparktech_energy_max")
			if val == 0 then
				player:hud_change(i["idt"], "text", "")
			else
				player:hud_change(i["idt"], "text", meta:get_int("energy") .. " / " .. val)
			end
			player:hud_change(i["idm"], "text", meta:get_string("net_master"))
		end
end)