server-nalc/mods/hud/builtin.lua

HUD_SB_SIZE = {x = 24, y = 24}

HUD_HEALTH_POS = {x = 0.5,y = 1}
HUD_HEALTH_OFFSET = {x = -262, y = -87}
HUD_AIR_POS = {x = 0.5, y = 1}
HUD_AIR_OFFSET = {x = 15, y = -87}
HUD_HUNGER_POS = {x = 0.5, y = 1}
HUD_HUNGER_OFFSET = {x = 15, y = -110}
HUD_ARMOR_POS = {x = 0.5, y = 1}
HUD_ARMOR_OFFSET = {x = -262, y = -110}

-- read hud.conf settings
hud.read_conf()

local damage_enabled = minetest.setting_getbool("enable_damage")

hud.show_hunger = minetest.get_modpath("hunger") ~= nil
hud.show_armor = minetest.get_modpath("3d_armor") ~= nil

-- check if some settings are invalid
local enable_hunger = minetest.setting_getbool("hud_hunger_enable")
if (enable_hunger == true or HUD_ENABLE_HUNGER == true) and not hud.show_hunger then
	hud.notify_hunger(5)
end

if damage_enabled then
    hud.register("health", {
	hud_elem_type = "statbar",
	position = HUD_HEALTH_POS,
	size = HUD_SB_SIZE,
	text = "hud_heart_fg.png",
	number = 20,
	alignment = {x=-1,y=-1},
	offset = HUD_HEALTH_OFFSET,
	background = "hud_heart_bg.png",
	events = {
		 {
			type = "damage",
			func = function(player)
				hud.change_item(player, "health", {number = player:get_hp()})
			end
		 }
	},
    })

    hud.register("air", {
	hud_elem_type = "statbar",
	position = HUD_AIR_POS,
	size = HUD_SB_SIZE,
	text = "hud_air_fg.png",
	number = 0,
	alignment = {x=-1,y=-1},
	offset = HUD_AIR_OFFSET,
	background = nil,
	events = {
		 {
			type = "breath",
			func = function(player)
				local air = player:get_breath()
				if air > 10 then
					air = 0
				end
				hud.change_item(player, "air", {number = air * 2})
			end
		 }
	},
    })

    hud.register("armor", {
	hud_elem_type = "statbar",
	position = HUD_ARMOR_POS,
	size = HUD_SB_SIZE,
	text = "hud_armor_fg.png",
	number = 0,
	alignment = {x=-1,y=-1},
	offset = HUD_ARMOR_OFFSET,
	background = "hud_armor_bg.png",
	autohide_bg = true,
	max = 20,
    })

    local start_value = 0
    if show_hunger then
	start_value = 20
    end

    hud.register("hunger", {
	hud_elem_type = "statbar",
	position = HUD_HUNGER_POS,
	size = HUD_SB_SIZE,
	text = "hud_hunger_fg.png",
	number = start_value,
	alignment = {x=-1,y=-1},
	offset = HUD_HUNGER_OFFSET,
	background = "hud_hunger_bg.png",
	--autohide_bg = true,
	max = 0,
    })
else
	hud.show_armor = false
end