Gruid

gruid
Library project
Developer	anaseto
Released	Dec 24 2020 (Alpha)
Updated	Aug 23 2023 (Beta v0.23.0)
Status	Beta
Licensing	ISC (BSD-like)
P. Language	Go
Platforms	Linux, OpenBSD, Windows, Mac OS X, Browser
Dependencies	tcell or SDL or browser (none)
Official site of gruid

The gruid module provides packages for easily building grid-based applications in Go. The library abstracts rendering and input for different platforms, and provides packages for common roguelike development needs.

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.

Features

• Three drivers: terminal (using tcell), SDL2 and browser (using wasm). Fast rendering.
• Support for both ASCII and Tiles.
• Update on message then draw architecture based on the Elm architecture.
• A convenient grid slice type for manipulating the screen contents.
• Pathfinding algorithms: A*, JPS, Breadth first, Dijkstra and connected components.
• Two complementary field of view algorithms: symmetric shadow casting and a custom algorithm allowing for non-binary vision.
• Configurable cellular automata cave and randow walk map generation algorithms.
• An event priority queue.

Use in Roguelikes

The stealth roguelike Harmonist uses gruid. Recent Boohu versions were updated to use gruid for pathfinding and FOV.