panel_lib/DOCS.md

Panel_lib docs

1. Panel structure

A panel is a custom object made of 2 HUD elements, the title and the background, plus a group of two sub-elements: the text and the images. Picture the background as the container of all the things you want to showcase in your HUD. Those things go in the sub-elements.

1.1. Declaration

To declare a new panel, simply do
local panel = Panel:new(name, {parameters})

The parameters it takes are the following:

• player: required. The player to assign the panel to
• position: the panel position (as in any other HUD)
• alignment: same
• offset: same
• bg: the picture to put in the background
• bg_scale: its scaling
• title: the default text. Default is empty ("")
• title_size: (table) as a multiplier, where Y is not considered. Ie. { x = 2} will double up the font size
• title_alignment
• title_offset: if offset is declared already, it'll add/subtract the two values
• title_color
• visible: (bool) whether the panel is visible right after its creation. Default is true
• sub_img_elems: (table) whatever image to add to the panel
• sub_txt_elems: (table) whatever text to add to the panel

1.2. Sub-elements

Sub-elements are HUDs added on top of the main container, sharing the same position. This means two things:

1. As a HUD, they take the same parameters a HUD takes. They are clones respectively of the background and the title, so if you skip some parameter, they'll keep their reference default value.
2. If you wanna move them around, you must tweak the offset, NOT the position. If you change the position, they may look fine in a screen resolution, but not in another. In order to prevent it, panel_lib automatically overrides the position with the panel's.

Have a look at the example file to see a complete panel declaration.

2. Configuration

Install it as any other mod ¯\_(ツ)_/¯

2.1. Functions

• new({params}): creates a new panel
• show(): makes the panel appear
• hide(): makes the panel disappear (but it's still assigned to the player)
• is_visible(): whether the panel is currently displayed
• remove(): deletes it
• update(panel_params, txt_elems, img_elems): updates only the mentioned parameters. Beware: panel_params only supports a few. They are position, offset, bg, title and title_color.For instance, calling

panel:update(nil, nil, {my_custom_img = {
      text = "pic2.png"
    })

updates just the text of the sub-element my_custom_img.

• add_sub_elem(type, name, HUD_elem): adds a sub-element at runtime. type must be either text or image. HUD_elem is the table representing the HUD
• remove_sub_elem(name): removes a sub-element at runtime

2.2 Getters

• panel_lib.get_panel(player_name, panel_name): obtains the panel associated with a player

3. Collaborating

Something's wrong? Feel free to:

• open an issue
• submit a merge request. In this case, PLEASE, do follow milestones and my coding guidelines. I won't merge features for milestones that are different from the upcoming one (if it's declared), nor messy code
• contact me on the Minetest Forum

I'd really appreciate it :)

4. About the author(s)

I'm Zughy (Marco), a professional Italian pixel artist who fights for FOSS and digital ethics. If this library spared you a lot of time and you want to support me somehow, please consider donating on LiberaPay. Also, this project wouldn't have been possible if it hadn't been for some friends who helped me testing through: SonoMichele, _Zaizen_ and Xx_Crazyminer_xX