Migrated to https://codeberg.org/anaseto/gruid because of new 2FA requirement (you'll need to update your imports)
The gruid module provides packages for easily building grid-based applications in Go. The library abstracts rendering and input for different platforms. There are drivers available for terminal apps (gruid-tcell), native graphical apps (gruid-sdl) and browser apps (gruid-js). The original application for the library was creating grid-based games, but it's also well-suited for any grid-based application.
The core gruid package uses a convenient and flexible architecture of updating a model in response to messages strongly inspired from the bubbletea module for building terminal apps, which in turn is based on the functional Elm Architecture. The architecture has been adapted to be more idiomatic in Go in the context of grid-based applications: less functional and more efficient.
You can find examples below in the Examples section.
The full documentation is linked at the top of this README. We provide here a quick overview.
The gruid package defines the Model and Driver interfaces and allows to start the “update on message then draw” main loop of an application. It also defines a convenient and efficient slice grid structure to represent the logical contents of the screen and manipulate them.
The ui package defines common UI widgets and utilities: menu/table widget, pager, text input, label, styled text drawing facilities and replay functionality.
The tiles package contains helpers for drawing fonts on images, which can be used to manage character tiles using a Driver from either gruid-sdl or gruid-js.
The paths package provides efficient implementations of some common
pathfinding algorithms that are often used in grid-based games, such as
roguelikes. You will find implementations of the A* and
JPS algorithms, as well as
Dijkstra, breadth first, and connected components maps computations. See
move.go in the movement example in
gruid-examples for an annotated
example using JPS and the mouse.
The rl package provides some additional utilities commonly needed in grid-based games such as roguelikes. The package provides an event priority queue, two complementary field of view algorithms, map generation algorithms, as well as vault parsing and manipulation utilities.
The tcell, sdl, and js packages in the (gruid-tcell), (gruid-sdl) and (gruid-js) modules provide specific rendering and input implementations satisfying gruid's package Driver interface. The provided terminal driver only handles full-window applications. See the README.md files in the respective repositories for specific build and deployment instructions (gruid-sdl will require SDL2, and gruid-js will require a bit of HTML and js).
The gruid-examples module offers some simple annotated examples of gruid usage.
You may want to look also into some real world examples of gruid programs:
If you need to handle wide-characters, that is characters that take two cells in the terminal, you may want to look into go-runewidth.
The clipboard module may be of interest for some applications too, as copying and pasting is not handled by gruid. Note that, at this time, the clipboard module does not support the js platform, but there's at least one fork that does.
As gruid only provides a few map generation algorithms, you may be interested in the dngn module, which provides map generation algorithms too, though its representation of maps is different.
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