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API documentation for the HUD bars mod
======================================
## Introduction
This API allows you to add, change, hide and unhide custom HUD bars for this mod.
## Overview
To give you a *very* brief overview over this API, here is the basic workflow on how to add your own custom HUD bar:
* Create images for your HUD bar
* Call `hb.register_hudbar` to make the definition of the HUD bar known to this mod
* Call `hb.init_hudbar` for each player for which you want to use previously defined HUD bar
* Use `hb.change_hudbar` whenever you need to change the values of a HUD bar of a certain player
* If you need it: Use `hb.hide_hudbar` and `hb.unhide_hudbar` to hide or unhide HUD bars of a certain player
## The basic rules
In order to use this API, you should be aware of a few basic rules in order to understand it:
* A HUD bar is an approximate graphical representation of the ratio of a current value and a maximum value, i.e. current health of 15 and maximum health of 20. A full HUD bar represents 100%, an empty HUD bar represents 0%.
* The current value must always be equal to or smaller then the maximum
* Both current value and maximum must not be smaller than 0
* Both current value and maximum must be real numbers. So no NaN, infinity, etc.
* The HUD bar will be hidden if the maximum equals 0. This is intentional.
* The health and breath HUD bars are hardcoded.
These are soft rules, the HUD bars mod will not enforce all of these.
But this mod has been programmed under the assumption that these rules are followed, for integrity.
## Adding a HUD bar
To make a new HUD bar known to this mod, you need …
* … an image of size 2×16 for the bar
* … an icon of size 16×16 (optional)
* … to register it with `hb.register_hudbar`
### Bar image
The image for the bar will be repeated horizontally to denote the “value” of the HUD bar.
It **must** be of size 2×16.
If neccessary, the image will be split vertically in half, and only the left half of the image
is displayed. So the final HUD bar will always be displayed on a per-pixel basis.
The default bar images are single-colored, but you can use other styles as well, for instance,
a vertical gradient.
### Icon
A 16×16 image shown left of the HUD bar. This is optional.
### `hb.register_hudbar(identifier, text_color, label, textures, default_start_value, default_start_max, default_start_hidden, format_string, format_string_config)`
This function registers a new custom HUD bar definition to the HUD bars mod, so it can be later used to be displayed, changed, hidden
and unhidden on a per-player basis.
Note this does not yet display the HUD bar.
The HUD bars will be displayed in a “first come, first serve” order. This API does not allow fow a custom order or a way to set it
manually in a reliable way. However, you can use the setting `hudbars_sorting` for this. See the advanced setting menu in Minetest
for more information.
#### Parameters
* `identifier`: A globally unique internal name for the HUD bar, will be used later to refer to it. Please only rely on alphanumeric characters for now. The identifiers “`health`” and “`breath`” are used internally for the built-in health and breath bar, respectively. Please do not use these names.
* `text_color`: A 3-octet number defining the color of the text. The octets denote, in this order red, green and blue and range from `0x00` (complete lack of this component) to `0xFF` (full intensity of this component). Example: `0xFFFFFF` for white.
* `label`: A string which is displayed on the HUD bar itself to describe the HUD bar. Try to keep this string short.
* `textures`: A table with the following fields:
* `bar`: The file name of the bar image (as string). This is only used for the `progress_bar` bar type (see `README.txt`, settings section).
* `icon`: The file name of the icon, as string. For the `progress_bar` type, it is shown as single image left of the bar, for the two statbar bar types, it is used as the statbar icon and will be repeated. This field can be `nil`, in which case no icon will be used, but this is not recommended, because the HUD bar will be invisible if the one of the statbar bar types is used.
* `bgicon`: The file name of the background icon, it is used as the background for the modern statbar mode only. This field can be `nil`, in which case no background icon will be displayed in this mode.
* `default_start_value`: If this HUD bar is added to a player, and no initial value is specified, this value will be used as initial current value
* `default_max_value`: If this HUD bar is added to a player, and no initial maximum value is specified, this value will be used as initial maximum value
* `default_start_hidden`: The HUD bar will be initially start hidden by default when added to a player. Use `hb.unhide_hudbar` to unhide it.
* `format_string`: Optional; You can specify an alternative format string to use for the final text on the HUD bar. The default format string is “`@1: @2/@3`” (The “@” numbers are placeholders that have a meaning in this order: @1 = Label, @2 = current value, @3 = maximum value). Do *not* use minetest.translator on this string, the string will be translated by `hudbars`, but you still must put this string into the translation catalogue file.
* `format_string_config`: Required if `format_string` is set. This allows to change which parameters to use in the format string. It's a table with these fields:
* `textdomain`: Text domain of the format string, used by `minetest.translate`
* `order`: Table that contains the order of the placeholders. It's also possible to remove placeholders. Default order: `{ "label", "value", "max_value" }`
* `format_value`: Format string to apply when displaying `value`. Syntax is same as in `string.format`. Default: `"%d"`
* `format_max_value`: Same as `format_value` but is applied to `max_value`
#### Example
Example (mostly) from `hbarmor` mod:
```
hb.register_hudbar("armor", 0xFFFFFF, minetest.translator("hbarmor", "Armor"), { icon = "hbarmor_icon.png", bgicon = "hbarmor_bgicon.png", bar = "hbarmor_bar.png" }, 0, 100, hbarmor.autohide, N("@1: @2%"), { order = { "label", "value" }, textdomain = "hbarmor" } )
```
Displays an armor HUD bar with a label of the form „Armor: 53%“. (`N` is a dummy function that returns its argument, used to make the string visible for translator scripts.)
#### Return value
Always `nil`.
## Displaying a HUD bar
After a HUD bar has been registered, they are not yet displayed yet for any player. HUD bars must be
explicitly initialized on a per-player basis.
You probably want to do this in the `minetest.register_on_joinplayer`.
### `hb.init_hudbar(player, identifier, start_value, start_max, start_hidden)`
This function initialzes and activates a previously registered HUD bar and assigns it to a
certain client/player. This has only to be done once per player and after that, you can change
the values using `hb.change_hudbar`.
However, if `start_hidden` was set to `true` for the HUD bar (in `hb.register_hudbar`), the HUD bar
will initially be hidden, but the HUD elements are still sent to the client. Otherwise,
the HUD bar will be initially be shown to the player.
#### Parameters
* `player`: `ObjectRef` of the player to which the new HUD bar should be displayed to.
* `identifier`: The identifier of the HUD bar type, as specified in `hb.register_hudbar`.
* `start_value`: The initial current value of the HUD bar. This is optional, `default_start_value` of the registration function will be used, if this is `nil`.
* `start_max`: The initial maximum value of the HUD bar. This is optional, `default_start_max` of the registration function will be used, if this is `nil`
* `start_hidden`: Whether the HUD bar is initially hidden. This is optional, `default_start_hidden` of the registration function will be used as default
#### Return value
`true` on success, `false` otherwise.
## Modifying a HUD bar
After a HUD bar has been added, you can change the current and maximum value and other attributes on a per-player basis.
You use the function `hb.change_hudbar` for this.
### `hb.change_hudbar(player, identifier, new_value, new_max_value, new_icon, new_bgicon, new_bar, new_label, new_text_color)`
Changes the values and the appearance of an initialized HUD bar for a certain player. `new_value`
and `new_max_value` are the most important parameters as they specify the new current and maximum new values, you do not need
to worry too much about the other parameters.
The following parameters are less important and provided for styling the HUD bar after registration (if
this is desired). The “styling” parameters parallel the parameters of `hb.register_hudbar`. It is
recommended to not change the style of a HUD bar too often as this can be distracting or confusing
for players.
`new_value`, `new_max_value` `new_icon`, `new_bgicon`, `new_bar`, `new_label` and `new_text_color` can be
`nil`; if one of them is `nil`, that means the value is unchanged. If all those values are `nil`, this
function is a no-op.
This function tries to minimize the amount of calls to `hud_change` of the Minetest Lua API
(and thus, network traffic), when you only change the value and/or maximum value. In this case,
`hud_change` is only called if it is actually needed, e.g. when the actual length of the bar
or the displayed string changed, so you do not have to worry about it. There is, however, no
such network optimization for the “styling” parameters, so keep this in mind.
#### Parameters
* `player`: `ObjectRef` of the player to which the HUD bar belongs to
* `identifier`: The identifier of the HUD bar type to change, as specified in `hb.register_hudbar`.
* `new_value`: The new current value of the HUD bar
* `new_max_value`: The new maximum value of the HUD bar
* `new_icon`: File name of the new icon
* `new_bgicon`: File name of the new background icon for the modern-style statbar
* `new_bar`: File name of the new bar segment image
* `new_label`: A new text label of the HUD bar. Note the format string still applies
* `new_text_color`: A 3-octet number defining the new color of the text.
#### Return value
`true` on success, `false` otherwise.
## Hiding and unhiding a HUD bar
You can also hide custom HUD bars, meaning they will not be displayed for a certain player. You can still
use `hb.change_hudbar` on a hidden HUD bar, the new values will be correctly displayed after the HUD bar
has been unhidden. Both functions will only call `hud_change` if there has been an actual change to avoid
unneccessary traffic.
Note that the hidden state of a HUD bar will *not* be saved by this mod on server shutdown, so you may need
to write your own routines for this or by setting the correct value for `start_hidden` when calling
`hb.init_hudbar`.
### `hb.hide_hudbar(player, identifier)`
Hides the specified HUD bar from the screen of the specified player.
#### Parameters
* `player`: `ObjectRef` of the player to which the HUD bar belongs to
* `identifier`: The identifier of the HUD bar type to hide, as specified in `hb.register_hudbar`.
#### Return value
`true` on success, `false` otherwise.
### `hb.unhide_hudbar(player, identifier)`
Makes a previously hidden HUD bar visible again to a player.
#### Parameters
* `player`: `ObjectRef` of the player to which the HUD bar belongs to
* `identifier`: The identifier of the HUD bar type to unhide, as specified in `hb.register_hudbar`.
#### Return value
`true` on success, `false` otherwise.
## Reading HUD bar information
It is also possible to read information about existing HUD bars.
### `hb.get_hudbar_state(player, identifier)`
Returns the current state of the active player's HUD bar.
#### Parameters
* `player`: `ObjectRef` of the player to which the HUD bar belongs to
* `identifier`: The identifier of the HUD bar type to hide, as specified in `hb.register_hudbar`.
#### Return value
On success, returns a table which holds information on the current state of the HUD bar. Note
the table is a deep copy of the internal HUD bar state, it is *not* a reference; the information
hold by the table is only true for the moment you called this function. The fields of this table are:
* `value`: Current value of HUD bar.
* `max`: Current maximum value of HUD bar.
* `hidden`: Boolean denoting whether the HUD bar is hidden.
* `barlength`: The length of the HUD bar in pixels. This field is meaningless if the HUD bar is currently hidden.
* `text`: The text shown on the HUD bar. This fiels is meaningless if the HUD bar is currently hidden.
If the player does not exist, returns `nil` instead.
### `hb.get_hudbar_identifiers()`
Returns a table of all currently registered HUD bar identifiers.

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# HUD bars
## Description
This mod changes the HUD of Minetest. It replaces the default health and breath
symbols by horizontal colored bars with text showing the number.
Furthermore, it enables other mods to add their own custom bars to the HUD,
this mod will place them accordingly.
**Important**: Keep in mind if running a server with this mod, that the custom
position should be displayed correctly on every screen size.
## Current version
The current version is 2.3.2.
It works for Minetest 5.3.0.
This software uses [semantic versioning](http://semver.org), as defined by version 2.0.0 of the SemVer
standard.
## Settings
This mod can be configured quite a bit. You can change HUD bar appearance, offsets, ordering, and more.
Use the advanced settings menu in Minetest for detailed configuration.
## API
The API is used to add your own custom HUD bars.
Documentation for the API of this mod can be found in `API.md`.
## Legal
### License of source code
Author: Wuzzy (2015)
Also: This mod was forked from the “Better HUD” [hud] mod by BlockMen.
Translations:
* German: Wuzzy
* Portuguese: BrunoMine
* Turkish: admicos
* Dutch: kingoscargames
* Italian: Hamlet
* Malay: muhdnurhidayat
* Russian: Imk
* Spanish: wuniversales
This program is free software. It comes without any warranty, to
the extent permitted by applicable law. You can redistribute it
and/or modify it under the terms of the MIT License.
### Licenses of textures
* `hudbars_icon_health.png`—celeron55 (CC BY-SA 3.0), modified by BlockMen
* `hudbars_bgicon_health.png`—celeron55 (CC BY-SA 3.0), modified by BlockMen
* `hudbars_icon_breath.png`—kaeza (MIT License), modified by BlockMen, modified again by Wuzzy
* `hudbars_bgicon_breath.png`—based on previous image, edited by Wuzzy (MIT License)
* `hudbars_bar_health.png`—Wuzzy (MIT License)
* `hudbars_bar_breath.png`—Wuzzy (MIT License)
* `hudbars_bar_background.png`—Wuzzy (MIT License)
### License references
* [CC-BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/)
* [MIT License](https://opensource.org/licenses/MIT)

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-- (Hardcoded) default settings
hb.settings.max_bar_length = 160
hb.settings.statbar_length = 20
-- Statbar positions
hb.settings.pos_left = {}
hb.settings.pos_right = {}
hb.settings.start_offset_left = {}
hb.settings.start_offset_right= {}
hb.settings.pos_left.x = hb.load_setting("hudbars_pos_left_x", "number", 0.5)
hb.settings.pos_left.y = hb.load_setting("hudbars_pos_left_y", "number", 1)
hb.settings.pos_right.x = hb.load_setting("hudbars_pos_right_x", "number", 0.5)
hb.settings.pos_right.y = hb.load_setting("hudbars_pos_right_y", "number", 1)
hb.settings.bar_type = hb.load_setting("hudbars_bar_type", "string", "progress_bar", {"progress_bar", "statbar_classic", "statbar_modern"})
if hb.settings.bar_type == "progress_bar" then
hb.settings.start_offset_left.x = hb.load_setting("hudbars_start_offset_left_x", "number", -175)
hb.settings.start_offset_left.y = hb.load_setting("hudbars_start_offset_left_y", "number", -86)
hb.settings.start_offset_right.x = hb.load_setting("hudbars_start_offset_right_x", "number", 15)
hb.settings.start_offset_right.y = hb.load_setting("hudbars_start_offset_right_y", "number", -86)
else
hb.settings.start_offset_left.x = hb.load_setting("hudbars_start_statbar_offset_left_x", "number", -265)
hb.settings.start_offset_left.y = hb.load_setting("hudbars_start_statbar_offset_left_y", "number", -90)
hb.settings.start_offset_right.x = hb.load_setting("hudbars_start_statbar_offset_right_x", "number", 25)
hb.settings.start_offset_right.y = hb.load_setting("hudbars_start_statbar_offset_right_y", "number", -90)
end
hb.settings.vmargin = hb.load_setting("hudbars_vmargin", "number", 24)
hb.settings.tick = hb.load_setting("hudbars_tick", "number", 0.1)
-- Experimental setting: Changing this setting is not officially supported, do NOT rely on it!
hb.settings.forceload_default_hudbars = hb.load_setting("hudbars_forceload_default_hudbars", "bool", true)
-- Misc. settings
hb.settings.alignment_pattern = hb.load_setting("hudbars_alignment_pattern", "string", "zigzag", {"zigzag", "stack_up", "stack_down"})
hb.settings.autohide_breath = hb.load_setting("hudbars_autohide_breath", "bool", true)
local sorting = minetest.settings:get("hudbars_sorting")
if sorting ~= nil then
hb.settings.sorting = {}
hb.settings.sorting_reverse = {}
for k,v in string.gmatch(sorting, "(%w+)=(%w+)") do
hb.settings.sorting[k] = tonumber(v)
hb.settings.sorting_reverse[tonumber(v)] = k
end
else
hb.settings.sorting = { ["health"] = 0, ["breath"] = 1 }
hb.settings.sorting_reverse = { [0] = "health", [1] = "breath" }
end

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local S = minetest.get_translator("hudbars")
local N = function(s) return s end
hb = {}
hb.hudtables = {}
-- number of registered HUD bars
hb.hudbars_count = 0
-- table which records which HUD bar slots have been “registered” so far; used for automatic positioning
hb.registered_slots = {}
hb.settings = {}
function hb.load_setting(sname, stype, defaultval, valid_values)
local sval
if stype == "string" then
sval = minetest.settings:get(sname)
elseif stype == "bool" then
sval = minetest.settings:get_bool(sname)
elseif stype == "number" then
sval = tonumber(minetest.settings:get(sname))
end
if sval ~= nil then
if valid_values ~= nil then
local valid = false
for i=1,#valid_values do
if sval == valid_values[i] then
valid = true
end
end
if not valid then
minetest.log("error", "[hudbars] Invalid value for "..sname.."! Using default value ("..tostring(defaultval)..").")
return defaultval
else
return sval
end
else
return sval
end
else
return defaultval
end
end
-- Load default settings
dofile(minetest.get_modpath("hudbars").."/default_settings.lua")
local function player_exists(player)
return player ~= nil and player:is_player()
end
local function make_label(format_string, format_string_config, label, start_value, max_value)
local params = {}
local order = format_string_config.order
for o=1, #order do
if order[o] == "label" then
table.insert(params, label)
elseif order[o] == "value" then
if format_string_config.format_value then
table.insert(params, string.format(format_string_config.format_value, start_value))
else
table.insert(params, start_value)
end
elseif order[o] == "max_value" then
if format_string_config.format_max_value then
table.insert(params, string.format(format_string_config.format_max_value, max_value))
else
table.insert(params, max_value)
end
end
end
local ret
if format_string_config.textdomain then
ret = minetest.translate(format_string_config.textdomain, format_string, unpack(params))
else
ret = S(format_string, unpack(params))
end
return ret
end
-- Table which contains all players with active default HUD bars (only for internal use)
hb.players = {}
function hb.value_to_barlength(value, max)
if max == 0 then
return 0
else
if hb.settings.bar_type == "progress_bar" then
local x
if value < 0 then x=-0.5 else x = 0.5 end
local ret = math.modf((value/max) * hb.settings.max_bar_length + x)
return ret
else
local x
if value < 0 then x=-0.5 else x = 0.5 end
local ret = math.modf((value/max) * hb.settings.statbar_length + x)
return ret
end
end
end
function hb.get_hudtable(identifier)
return hb.hudtables[identifier]
end
function hb.get_hudbar_position_index(identifier)
if hb.settings.sorting[identifier] ~= nil then
return hb.settings.sorting[identifier]
else
local i = 0
while true do
if hb.registered_slots[i] ~= true and hb.settings.sorting_reverse[i] == nil then
return i
end
i = i + 1
end
end
end
function hb.register_hudbar(identifier, text_color, label, textures, default_start_value, default_start_max, default_start_hidden, format_string, format_string_config)
minetest.log("action", "hb.register_hudbar: "..tostring(identifier))
local hudtable = {}
local pos, offset
local index = math.floor(hb.get_hudbar_position_index(identifier))
hb.registered_slots[index] = true
if hb.settings.alignment_pattern == "stack_up" then
pos = hb.settings.pos_left
offset = {
x = hb.settings.start_offset_left.x,
y = hb.settings.start_offset_left.y - hb.settings.vmargin * index
}
elseif hb.settings.alignment_pattern == "stack_down" then
pos = hb.settings.pos_left
offset = {
x = hb.settings.start_offset_left.x,
y = hb.settings.start_offset_left.y + hb.settings.vmargin * index
}
else
if index % 2 == 0 then
pos = hb.settings.pos_left
offset = {
x = hb.settings.start_offset_left.x,
y = hb.settings.start_offset_left.y - hb.settings.vmargin * (index/2)
}
else
pos = hb.settings.pos_right
offset = {
x = hb.settings.start_offset_right.x,
y = hb.settings.start_offset_right.y - hb.settings.vmargin * ((index-1)/2)
}
end
end
if format_string == nil then
format_string = N("@1: @2/@3")
end
if format_string_config == nil then
format_string_config = {}
end
if format_string_config.order == nil then
format_string_config.order = { "label", "value", "max_value" }
end
if format_string_config.format_value == nil then
format_string_config.format_value = "%d"
end
if format_string_config.format_max_value == nil then
format_string_config.format_max_value = "%d"
end
hudtable.add_all = function(player, hudtable, start_value, start_max, start_hidden)
if start_value == nil then start_value = hudtable.default_start_value end
if start_max == nil then start_max = hudtable.default_start_max end
if start_hidden == nil then start_hidden = hudtable.default_start_hidden end
local ids = {}
local state = {}
local name = player:get_player_name()
local bgscale, iconscale, text, barnumber, bgiconnumber
if start_max == 0 or start_hidden then
bgscale = { x=0, y=0 }
else
bgscale = { x=1, y=1 }
end
if start_hidden then
iconscale = { x=0, y=0 }
barnumber = 0
bgiconnumber = 0
text = ""
else
iconscale = { x=1, y=1 }
barnumber = hb.value_to_barlength(start_value, start_max)
bgiconnumber = hb.settings.statbar_length
text = make_label(format_string, format_string_config, label, start_value, start_max)
end
if hb.settings.bar_type == "progress_bar" then
ids.bg = player:hud_add({
hud_elem_type = "image",
position = pos,
scale = bgscale,
text = "hudbars_bar_background.png",
alignment = {x=1,y=1},
offset = { x = offset.x - 1, y = offset.y - 1 },
z_index = 0,
})
if textures.icon ~= nil then
ids.icon = player:hud_add({
hud_elem_type = "image",
position = pos,
scale = iconscale,
text = textures.icon,
alignment = {x=-1,y=1},
offset = { x = offset.x - 3, y = offset.y },
z_index = 1,
})
end
end
local bar_image, bgicon, bar_size
if hb.settings.bar_type == "progress_bar" then
bar_image = textures.bar
-- NOTE: Intentionally set to nil. For some reason, on some systems,
-- the progress bar is displaced when the bar_size is set explicitly here.
-- On the other hand, setting this to nil is deprecated in MT 5.0.0 due to
-- a debug log warning, but nothing is explained in lua_api.txt.
-- This section is a potential bug magnet, please watch with care!
-- The size of the bar image is expected to be exactly 2×16 pixels.
bar_size = nil
elseif hb.settings.bar_type == "statbar_classic" or hb.settings.bar_type == "statbar_modern" then
bar_image = textures.icon
bgicon = textures.bgicon
bar_size = {x=24, y=24}
end
local text2
if hb.settings.bar_type == "statbar_modern" then
text2 = bgicon
end
ids.bar = player:hud_add({
hud_elem_type = "statbar",
position = pos,
text = bar_image,
text2 = text2,
number = barnumber,
item = bgiconnumber,
alignment = {x=-1,y=-1},
offset = offset,
direction = 0,
size = bar_size,
z_index = 1,
})
if hb.settings.bar_type == "progress_bar" then
ids.text = player:hud_add({
hud_elem_type = "text",
position = pos,
text = text,
alignment = {x=1,y=1},
number = text_color,
direction = 0,
offset = { x = offset.x + 2, y = offset.y - 1},
z_index = 2,
})
end
-- Do not forget to update hb.get_hudbar_state if you add new fields to the state table
state.hidden = start_hidden
state.value = start_value
state.max = start_max
state.text = text
state.barlength = hb.value_to_barlength(start_value, start_max)
local main_error_text =
"[hudbars] Bad initial values of HUD bar identifier “"..tostring(identifier).."” for player "..name..". "
if start_max < start_value then
minetest.log("error", main_error_text.."start_max ("..start_max..") is smaller than start_value ("..start_value..")!")
end
if start_max < 0 then
minetest.log("error", main_error_text.."start_max ("..start_max..") is smaller than 0!")
end
if start_value < 0 then
minetest.log("error", main_error_text.."start_value ("..start_value..") is smaller than 0!")
end
hb.hudtables[identifier].hudids[name] = ids
hb.hudtables[identifier].hudstate[name] = state
end
hudtable.identifier = identifier
hudtable.format_string = format_string
hudtable.format_string_config = format_string_config
hudtable.label = label
hudtable.hudids = {}
hudtable.hudstate = {}
hudtable.default_start_hidden = default_start_hidden
hudtable.default_start_value = default_start_value
hudtable.default_start_max = default_start_max
hb.hudbars_count= hb.hudbars_count + 1
hb.hudtables[identifier] = hudtable
end
function hb.init_hudbar(player, identifier, start_value, start_max, start_hidden)
if not player_exists(player) then return false end
local hudtable = hb.get_hudtable(identifier)
hb.hudtables[identifier].add_all(player, hudtable, start_value, start_max, start_hidden)
return true
end
function hb.change_hudbar(player, identifier, new_value, new_max_value, new_icon, new_bgicon, new_bar, new_label, new_text_color)
if new_value == nil and new_max_value == nil and new_icon == nil and new_bgicon == nil and new_bar == nil and new_label == nil and new_text_color == nil then
return true
end
if not player_exists(player) then
return false
end
local name = player:get_player_name()
local hudtable = hb.get_hudtable(identifier)
if not hudtable.hudstate[name] then
return false
end
local value_changed, max_changed = false, false
if new_value ~= nil then
if new_value ~= hudtable.hudstate[name].value then
hudtable.hudstate[name].value = new_value
value_changed = true
end
else
new_value = hudtable.hudstate[name].value
end
if new_max_value ~= nil then
if new_max_value ~= hudtable.hudstate[name].max then
hudtable.hudstate[name].max = new_max_value
max_changed = true
end
else
new_max_value = hudtable.hudstate[name].max
end
if hb.settings.bar_type == "progress_bar" then
if new_icon ~= nil and hudtable.hudids[name].icon ~= nil then
player:hud_change(hudtable.hudids[name].icon, "text", new_icon)
end
if new_bgicon ~= nil and hudtable.hudids[name].bgicon ~= nil then
player:hud_change(hudtable.hudids[name].bgicon, "text", new_bgicon)
end
if new_bar ~= nil then
player:hud_change(hudtable.hudids[name].bar , "text", new_bar)
end
if new_label ~= nil then
hudtable.label = new_label
local new_text = make_label(hudtable.format_string, hudtable.format_string_config, new_label, hudtable.hudstate[name].value, hudtable.hudstate[name].max)
player:hud_change(hudtable.hudids[name].text, "text", new_text)
end
if new_text_color ~= nil then
player:hud_change(hudtable.hudids[name].text, "number", new_text_color)
end
else
if new_icon ~= nil and hudtable.hudids[name].bar ~= nil then
player:hud_change(hudtable.hudids[name].bar, "text", new_icon)
end
if new_bgicon ~= nil and hudtable.hudids[name].bg ~= nil then
player:hud_change(hudtable.hudids[name].bg, "text", new_bgicon)
end
end
local main_error_text =
"[hudbars] Bad call to hb.change_hudbar, identifier: “"..tostring(identifier).."”, player name: “"..name.."”. "
if new_max_value < new_value then
minetest.log("error", main_error_text.."new_max_value ("..new_max_value..") is smaller than new_value ("..new_value..")!")
end
if new_max_value < 0 then
minetest.log("error", main_error_text.."new_max_value ("..new_max_value..") is smaller than 0!")
end
if new_value < 0 then
minetest.log("error", main_error_text.."new_value ("..new_value..") is smaller than 0!")
end
if hudtable.hudstate[name].hidden == false then
if max_changed and hb.settings.bar_type == "progress_bar" then
if hudtable.hudstate[name].max == 0 then
player:hud_change(hudtable.hudids[name].bg, "scale", {x=0,y=0})
else
player:hud_change(hudtable.hudids[name].bg, "scale", {x=1,y=1})
end
end
if value_changed or max_changed then
local new_barlength = hb.value_to_barlength(new_value, new_max_value)
if new_barlength ~= hudtable.hudstate[name].barlength then
player:hud_change(hudtable.hudids[name].bar, "number", hb.value_to_barlength(new_value, new_max_value))
hudtable.hudstate[name].barlength = new_barlength
end
if hb.settings.bar_type == "progress_bar" then
local new_text = make_label(hudtable.format_string, hudtable.format_string_config, hudtable.label, new_value, new_max_value)
if new_text ~= hudtable.hudstate[name].text then
player:hud_change(hudtable.hudids[name].text, "text", new_text)
hudtable.hudstate[name].text = new_text
end
end
end
end
return true
end
function hb.hide_hudbar(player, identifier)
if not player_exists(player) then return false end
local name = player:get_player_name()
local hudtable = hb.get_hudtable(identifier)
if hudtable == nil then return false end
if hb.settings.bar_type == "progress_bar" then
if hudtable.hudids[name].icon ~= nil then
player:hud_change(hudtable.hudids[name].icon, "scale", {x=0,y=0})
end
player:hud_change(hudtable.hudids[name].bg, "scale", {x=0,y=0})
player:hud_change(hudtable.hudids[name].text, "text", "")
end
player:hud_change(hudtable.hudids[name].bar, "number", 0)
player:hud_change(hudtable.hudids[name].bar, "item", 0)
hudtable.hudstate[name].hidden = true
return true
end
function hb.unhide_hudbar(player, identifier)
if not player_exists(player) then return false end
local name = player:get_player_name()
local hudtable = hb.get_hudtable(identifier)
if hudtable == nil then return false end
local value = hudtable.hudstate[name].value
local max = hudtable.hudstate[name].max
if hb.settings.bar_type == "progress_bar" then
if hudtable.hudids[name].icon ~= nil then
player:hud_change(hudtable.hudids[name].icon, "scale", {x=1,y=1})
end
if hudtable.hudstate[name].max ~= 0 then
player:hud_change(hudtable.hudids[name].bg, "scale", {x=1,y=1})
end
player:hud_change(hudtable.hudids[name].text, "text", make_label(hudtable.format_string, hudtable.format_string_config, hudtable.label, value, max))
elseif hb.settings.bar_type == "statbar_modern" then
player:hud_change(hudtable.hudids[name].bar, "scale", {x=1,y=1})
end
player:hud_change(hudtable.hudids[name].bar, "number", hb.value_to_barlength(value, max))
player:hud_change(hudtable.hudids[name].bar, "item", hb.value_to_barlength(max, max))
hudtable.hudstate[name].hidden = false
return true
end
function hb.get_hudbar_state(player, identifier)
if not player_exists(player) then return nil end
local ref = hb.get_hudtable(identifier).hudstate[player:get_player_name()]
-- Do not forget to update this chunk of code in case the state changes
local copy = {
hidden = ref.hidden,
value = ref.value,
max = ref.max,
text = ref.text,
barlength = ref.barlength,
}
return copy
end
function hb.get_hudbar_identifiers()
local ids = {}
for id, _ in pairs(hb.hudtables) do
table.insert(ids, id)
end
return ids
end
--register built-in HUD bars
if minetest.settings:get_bool("enable_damage") or hb.settings.forceload_default_hudbars then
hb.register_hudbar("health", 0xFFFFFF, S("Health"), { bar = "hudbars_bar_health.png", icon = "hudbars_icon_health.png", bgicon = "hudbars_bgicon_health.png" }, 20, 20, false)
hb.register_hudbar("breath", 0xFFFFFF, S("Breath"), { bar = "hudbars_bar_breath.png", icon = "hudbars_icon_breath.png", bgicon = "hudbars_bgicon_breath.png" }, 10, 10, true)
end
local function hide_builtin(player)
local flags = player:hud_get_flags()
flags.healthbar = false
flags.breathbar = false
player:hud_set_flags(flags)
end
local function custom_hud(player)
if minetest.settings:get_bool("enable_damage") or hb.settings.forceload_default_hudbars then
local hide
if minetest.settings:get_bool("enable_damage") then
hide = false
else
hide = true
end
local hp = player:get_hp()
local hp_max = player:get_properties().hp_max
hb.init_hudbar(player, "health", math.min(hp, hp_max), hp_max, hide)
local breath = player:get_breath()
local breath_max = player:get_properties().breath_max
local hide_breath
if breath >= breath_max and hb.settings.autohide_breath == true then hide_breath = true else hide_breath = false end
hb.init_hudbar(player, "breath", math.min(breath, breath_max), breath_max, hide_breath or hide)
end
end
local function update_health(player)
local hp_max = player:get_properties().hp_max
hb.change_hudbar(player, "health", player:get_hp(), hp_max)
end
-- update built-in HUD bars
local function update_hud(player)
if not player_exists(player) then return end
if minetest.settings:get_bool("enable_damage") then
if hb.settings.forceload_default_hudbars then
hb.unhide_hudbar(player, "health")
end
--air
local breath_max = player:get_properties().breath_max
local breath = player:get_breath()
if breath >= breath_max and hb.settings.autohide_breath == true then
hb.hide_hudbar(player, "breath")
else
hb.unhide_hudbar(player, "breath")
hb.change_hudbar(player, "breath", math.min(breath, breath_max), breath_max)
end
--health
update_health(player)
elseif hb.settings.forceload_default_hudbars then
hb.hide_hudbar(player, "health")
hb.hide_hudbar(player, "breath")
end
end
minetest.register_on_player_hpchange(function(player)
if hb.players[player:get_player_name()] ~= nil then
update_health(player)
end
end)
minetest.register_on_respawnplayer(function(player)
update_health(player)
hb.hide_hudbar(player, "breath")
end)
minetest.register_on_joinplayer(function(player)
hide_builtin(player)
custom_hud(player)
hb.players[player:get_player_name()] = player
end)
minetest.register_on_leaveplayer(function(player)
hb.players[player:get_player_name()] = nil
end)
local main_timer = 0
local timer = 0
minetest.register_globalstep(function(dtime)
main_timer = main_timer + dtime
timer = timer + dtime
if main_timer > hb.settings.tick or timer > 4 then
if main_timer > hb.settings.tick then main_timer = 0 end
-- only proceed if damage is enabled
if minetest.settings:get_bool("enable_damage") or hb.settings.forceload_default_hudbars then
for _, player in pairs(hb.players) do
-- update all hud elements
update_hud(player)
end
end
end
if timer > 4 then timer = 0 end
end)

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@ -1,4 +0,0 @@
# textdomain: hudbars
Health=Leben
Breath=Atem
@1: @2/@3=@1: @2/@3

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# textdomain: hudbars
Health=Salud
Breath=Aliento
@1: @2/@3=@1: @2/@3

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# textdomain: hudbars
Health=Salute
Breath=Ossigeno
# Default format string for progress bar-style HUD bars, e.g. “Health 5/20”
@1: @2/@3=@1: @2/@3

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# textdomain: hudbars
Health=Kesihatan
Breath=Nafas
@1: @2/@3=@1: @2/@3

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# textdomain: hudbars
Health=Gezondheid
Breath=Adem
# Default format string for progress bar-style HUD bars, e.g. “Health 5/20”
@1: @2/@3=@1: @2/@3

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# textdomain: hudbars
Health=Saude
Breath=Folego
# Formato de string padrão para progresso bar-style de barras do HUD, por exemplo “Saude 5/20”
@1: @2/@3=@1: @2/@3

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# textdomain: hudbars
Health=HP
Breath=дыхание
@1: @2/@3=@1: @2/@3

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# textdomain: hudbars
Health=Can
Breath=Nefes
@1: @2/@3=@1: @2/@3

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@ -1,6 +0,0 @@
# textdomain: hudbars
Health=
Breath=
# Default format string for progress bar-style HUD bars, e.g. “Health 5/20”
@1: @2/@3=

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name = hudbars
description = Replaces the health and breath symbols in the HUD by “progress bars” and shows exact values. Other mods can add more progress bars for custom player stats.

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[Appearance]
# Specifies how the value indicators (i.e. health, breah, etc.) look. There are 3 styles
# available. You can choose between the default progress-bar-like bars and the good
# old statbars like you know from vanilla Minetest.
# These values are possible:
# - progress_bar: A horizontal progress-bar-like bar with a label, showing numerical value
# (current, maximum), and an icon. These bars usually convey the most
# information. This is the default and recommended value.
# - statbar_classic: Classic statbar, like in vanilla Minetest. Made out of up to 20
# half-symbols. Those bars represent the vague ratio between
# the current value and the maximum value. 1 half-symbol stands for
# approximately 5% of the maximum value.
# - statbar_modern: Like the classic statbar, but also supports background images, this
# kind of statbar may be considered to be more user-friendly than the
# classic statbar. This bar type closely resembles the mod
# “Better HUD” [hud] by BlockMen.
hudbars_bar_type (HUD bars style) enum progress_bar progress_bar,statbar_classic,statbar_modern
# If enabled (default), the breath indicators in the HUD will be automatically hidden shortly
# after the breath has been filled up. Otherwise, the breath will always be displayed.
hudbars_autohide_breath (Automatically hide breath indicators) bool true
# This setting changes the way the HUD bars are ordered on the display. You can choose
# between a zig-zag pattern (default) or a vertically stacked pattern.
# The following values are allowed:
# - zigzag: Starting from the left bottom, the next is right from the first,
# the next is above the first, the next is right of the third, etc.
# - stack_up: The HUD bars are stacked vertically, going upwards.
# - stack_down: The HUD bars are stacked vertically, going downwards.
hudbars_alignment_pattern (HUD bars alignment pattern) enum zigzag zigzag,stack_up,stack_down
# This setting allows you to specify the order of the HUD bars explicitly. If left empty
# (the default), the health and breath indicators come first, additional indicators
# may appear in any order. This setting is quite technical and normal users probably do not
# need to worry about it.
#
# Syntax:
# The setting has to be specified as a comma-seperated list of key=value pairs, where a key
# refers to the identifier of a HUD bar and the value refers to the slot number of where the
# HUD bar should be placed. The slot number must be an integer greater of equal to 0. Where
# the HUD bars will be displayed exactly depends on the alignment pattern being used.
# All HUD bars to which no order value has been applied will fill in all slots which have
# not been occupied by the HUD bars specified in this setting, the slots will be filled in
# from the lowest slot number.
# Note that the order of those remaining HUD bars is not fixed, it basically just boils
# down on which mod “came” first. Don't worry, the mod will still work perfectly fine, this
# setting is entirely optional.
# The identifier for the health bar is “health” and the identifier for the breath bar is
# “breath”. For other HUD bars, you have to learn it from the mod which is supplying them.
#
# Be careful not to use slot indices twice, or else different HUD bars will be drawn over
# each other!
#
# Example: “breath=0, health=1”
# This makes the breath bar first and the health bar second, which is the opposite order
# of the default one.
hudbars_sorting (HUD bars order) string
[Positions and offsets]
# Horizontal (x) main position of the HUD bars over the entire screen.
# 0.0 is left-most, 1.0 is right-most.
# For the zig-zag alignment pattern, this is for the left HUD bars.
hudbars_pos_left_x (Left HUD bar screen x position) float 0.5 0.0 1.0
# Vertical (y) main position of the HUD bars over the entire screen.
# 0.0 is top, 1.0 is bottom.
# For the zig-zag alignment pattern, this is for the left HUD bars.
hudbars_pos_left_y (Left HUD bar screen y position) float 1.0 0.0 1.0
# Horizontal (x) main position of the right HUD bars over the entire screen.
# 0.0 is left-most, 1.0 is right-most.
# Only used for the zig-zag alignment pattern.
hudbars_pos_right_x (Right HUD bar screen x position) float 0.5 0.0 1.0
# Vertical main position (y) of the right HUD bars over the entire screen.
# 0.0 is top, 1.0 is bottom.
# Only used for the zig-zag alignment pattern.
hudbars_pos_right_y (Right HUD bar screen y position) float 1.0 0.0 1.0
# Precise x offset in pixels from the basic screen x position of the HUD bars.
# For the zig-zag alignment pattern, this is for the left HUD bars.
# This setting is used for the progress bar HUD bar style.
hudbars_start_offset_left_x (Left HUD bar x offset) int -175
# Precise y offset in pixels from the basic screen y position of the HUD bars.
# For the zig-zag alignment pattern, this is for the left HUD bars.
# This setting is used for the progress bar HUD bar style.
hudbars_start_offset_left_y (Left HUD bar y offset) int -86
# Precise x offset in pixels from the basic screen x position of the right HUD bars.
# Only used for the zig-zag alignment pattern.
# This setting is used for the progress bar HUD bar style.
hudbars_start_offset_right_x (Right HUD bar x offset) int 15
# Precise y offset in pixels from the basic screen y position of the right HUD bars.
# Only used for the zig-zag alignment pattern.
# This setting is used for the progress bar HUD bar style.
hudbars_start_offset_right_y (Right HUD bar y offset) int -86
# Precise x offset in pixels from the basic screen x position of the HUD statbars.
# For the zig-zag alignment pattern, this is for the left HUD statbars.
# This setting is used for the classic and modern statbar styles.
hudbars_start_statbar_offset_left_x (Left HUD statbar x offset) int -265
# Precise y offset in pixels from the basic screen y position of the HUD statbars.
# For the zig-zag alignment pattern, this is for the left HUD statbars.
# This setting is used for the classic and modern statbar styles.
hudbars_start_statbar_offset_left_y (Left HUD statbar y offset) int -90
# Precise x offset in pixels from the basic screen x position of the right HUD statbars.
# Only used for the zig-zag alignment pattern.
# This setting is used for the classic and modern statbar styles.
hudbars_start_statbar_offset_right_x (Right HUD statbar x offset) int 25
# Precise y offset in pixels from the basic screen y position of the right HUD statbars.
# Only used for the zig-zag alignment pattern.
# This setting is used for the classic and modern statbar styles.
hudbars_start_statbar_offset_right_y (Right HUD statbar y offset) int -90
# The vertical distance between two HUD bars, in pixels.
hudbars_vmargin (Vertical distance between HUD bars) int 24 0
[Performance]
# The of seconds which need to pass before the server updates the default HUD bars
# (health and breath). Increase this number if you have a slow server or a slow network
# connection and experience performance problems.
hudbars_tick (Default HUD bars update interval) float 0.1 0.0 4.0

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# Real Suffocation [`real_suffocation`]
Version: 1.0.0
This mod adds suffocation. Suffocation is basically the same as drowning, but it
is for being stuck inside solid blocks. If you're inside a solid block, you lose
breath. If you lost your breath completely and you're still inside, you suffer
10 HP (=5 “hearts”) of damage every 2 seconds.
Specifically, suffocation is added to all blocks which:
* Are solid
* Are full cubes
* Don't already have built-in damage or drowning damage
* Are not excluded from suffocations by mods
## Info for modders
This mod will not add suffocation to all nodes with the group
`disable_suffocation=1`.
This mod adds the group `real_suffocation=1` to all nodes it has modified,
this is mostly done for informational purposes.
## License
Everything is under the MIT license. Forked from https://repo.or.cz/minetest_real_suffocation.git.

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-- Load setting
local suffocation_damage = 2
local setting = minetest.settings:get("real_suffocation_damage")
if tonumber(setting) ~= nil then
suffocation_damage = tonumber(setting)
end
-- Skip the rest if suffocation damage is 0, no point in overwriting stuff
if suffocation_damage > 0 then
-- Checks all nodes and adds suffocation (drowning damage) for suitable nodes
local function add_suffocation()
-- For debugging output
local suffocate_nodes = {}
local no_suffocate_nodes = {}
-- Check ALL the nodes!
for itemstring, def in pairs(minetest.registered_nodes) do
--[[ Here comes the HUGE conditional deciding whether we use suffocation. We want to catch as many nodes as possible
while avoiding bad nodes. We care mostly about physical properties, we don't care about visual appearance.
Here's what it checks and why:
- Walkable: Must be walkable, which means player can get stuck inside. If player can move freely, suffocation does not make sense
- Drowning and damage: If node has set any of those explicitly, it probably knows why. We don't want to mess with it.
- collision_box, node_box: Checks whether we deal with full-sized standard cubes, since only care about those.
Everything else is probably too small for suffocation to seem real.
- disable_suffocation group: If set to 1, we bail out. This makes it possible for nodes to defend themselves against hacking. :-)
]]
if (def.walkable == nil or def.walkable == true)
and (def.drowning == nil or def.drowning == 0)
and (def.damage_per_second == nil or def.damage_per_second <= 0)
and (def.collision_box == nil or def.collision_box.type == "regular")
and (def.node_box == nil or def.node_box.type == "regular")
and (def.groups.disable_suffocation ~= 1)
then
-- Add “real_suffocation” group so other mods know this node was touched by this mod
local marked_groups = def.groups
marked_groups.real_suffocation = 1
-- Let's hack the node!
minetest.override_item(itemstring, { drowning = suffocation_damage, groups = marked_groups })
table.insert(suffocate_nodes, itemstring)
else
table.insert(no_suffocate_nodes, itemstring)
end
end
minetest.log("info", "[real_suffocation] Suffocation has been hacked into "..#suffocate_nodes.." nodes.")
minetest.log("verbose", "[real_suffocation] Nodes with suffocation: "..dump(suffocate_nodes))
minetest.log("verbose", "[real_suffocation] Suffocation has not been hacked into "..#no_suffocate_nodes.." nodes: "..dump(no_suffocate_nodes))
end
-- This is a minor hack to make sure our loop runs after all nodes have been registered
minetest.after(0, add_suffocation)
end
minetest.register_on_joinplayer(function(player)
player:set_properties({max_breath = 10})
end)

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name = real_suffocation
description = The player will lose breath inside solid blocks.

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@ -0,0 +1,4 @@
# How much damage is caused by “suffocation” by default, that is, running
# out of breath while being inside solid blocks like dirt, gravel, sand,
# etc. Like for drowning, damage is caused every 2 seconds.
real_suffocation_damage (Suffocation damage) int 2 0

View file

@ -12,8 +12,7 @@ if minetest.get_modpath("hudbars") ~= nil then
hb.register_hudbar("sprint", 0xFFFFFF, "Stamina", hb.register_hudbar("sprint", 0xFFFFFF, "Stamina",
{ bar = "sprint_stamina_bar.png", icon = "sprint_stamina_icon.png" }, { bar = "sprint_stamina_bar.png", icon = "sprint_stamina_icon.png" },
STAMINA_MAX, STAMINA_MAX, STAMINA_MAX, STAMINA_MAX,
false false, "%s: %.1f/%.1f")
)
SPRINT_HUDBARS_USED = true SPRINT_HUDBARS_USED = true
else else