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API.md
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@ -31,12 +31,11 @@ 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 add a HUD bar, you need …
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 wiith hud.
* … to activate it for each player for which you want the HUD
* … to register it with `hud.register_hudbar`
### Bar image
The image for the bar will be repeated horizontally to denote the “value” of the HUD bar.
@ -58,7 +57,7 @@ There is currently no reliable way to force a certain order at which the custom
#### 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.
* `text_color`: A 3-byte number defining the color of the text. The bytes 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.
* `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).
@ -68,20 +67,19 @@ There is currently no reliable way to force a certain order at which the custom
* `start_hide`: The HUD bar will be initially start hidden when added to a player. Use `hud.unhide_hudbar` to unhide it.
* `format_string`: This is optional; You can specify an alternative format string display the final text on the HUD bar. The default format string is “`%s: %d/%d`” (in this order: Label, current value, maximum value). See also the Lua documentation of `string.format`.
#### 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 enabled on a per-player basis.
explicitly initialized on a per-player basis.
You probably want to do this in the `minetest.register_on_joinplayer`.
### `hud.init_hudbar(player, identifier, start_value, start_max)`
This function initialzed and activates a previously registered HUD bar and assigns it to a
certain client. This has only to be done once per player and after that, you can change
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 `hud.change_hudbar`.
However, if `start_hide` was set to `true` for the HUD bar (in `hud.register_hudbar`), the HUD bar