hud.lua

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--             _____ _    _        _                      --
--            |_   _| |_ (_)_ _ __| |_ _  _               --
--              | | | ' \| | '_(_-<  _| || |              --
--              |_| |_||_|_|_| /__/\__|\_, |              --
--                                     |__/               --
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--              HUD definitions for Thirsty               --
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--                See init.lua for license                --
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--[[
Optionally from one of the supported mods

Any hud needs to define the following functions:

- thirsty.hud_init(player)
  Initialize the HUD for a new player.

- thirsty.hud_update(player, value)
  Display the new value "value" for the given player. "value" is
  a floating point number, not necessarily bounded. You can use the
  "thirsty.hud_clamp(value)" function to get an integer between 0
  and 20.

]]--

function thirsty.hud_clamp(value)
    if value < 0 then
        return 0
    elseif value > 20 then
        return 20
    else
        return math.ceil(value)
    end
end

if minetest.get_modpath("hudbars") then
    hb.register_hudbar('thirst', 0xffffff, "Hydration", {
        bar = 'thirsty_hudbars_bar.png',
        icon = 'thirsty_drop_100_24_cc0.png'
    }, 20, 20, false)
    function thirsty.hud_init(player)
        local pmeta = player:get_meta()
		hb.init_hudbar(player, 'thirst',
            thirsty.hud_clamp(pmeta:get_float("thirsty_hydro")),
        20, false)
    end
    function thirsty.hud_update(player, value)
        hb.change_hudbar(player, 'thirst', thirsty.hud_clamp(value), 20)
    end
else
    -- 'builtin' hud
    function thirsty.hud_init(player)
        -- above breath bar, for now
        local name = player:get_player_name()
		local pmeta = player:get_meta()
		
		thirsty_hud = player:hud_add({
            hud_elem_type = "statbar",
            position = { x=0.5, y=1 },
            text = "thirsty_drop_100_24_cc0.png",
            number = thirsty.hud_clamp(pmeta:get_float("thirsty_hydro")),
            direction = 0,
            size = { x=24, y=24 },
            offset = { x=25, y=-(48+24+16+32)},
        })
    end
    function thirsty.hud_update(player, value)
        local name = player:get_player_name()
        local hud_id = thirsty_hud
        player:hud_change(hud_id, 'number', thirsty.hud_clamp(value))
    end
end