QIIICSharpLib

A C# port of key utility functions and data structures from the original Quake III Arena source code. This NuGet package was built as a fun programming exercise, with a focus on learning, exploration, and nostalgia.

It reimagines core building blocks of the engine in a managed, modern language—while keeping the spirit of the original logic intact.

Overview

Includes C# reimplementations of various low-level C routines:

• String utilities like Q_stristr and BG_stricmp

• Custom formatters such as Q_vsprintf and BG_sprintf

• Parsers and tokenizers mimicking Quake's internal data flow

• Math helpers, including the famous fast inverse square root hack

All functions have been adapted to C# idioms where needed, but aim to remain faithful to the original design.

Purpose

Intended for:

• Learning: Understanding the inner workings of a classic game engine by examining its core components.

• Experimentation: Exploring how low-level C constructs can be represented and utilized in C#.

• Development: Providing a foundation for building tools or applications that interact with Quake III data formats or logic.

Usage example

Before, install the package.

After... enjoy!

using Q3CSharpLib;
using System.Text;

var sb = new StringBuilder();
QLib.Q_vsprintf(sb, "%s square root calculated: %.8f", new object[] { "Inverse fast", QMath.Q_rsqrt(42) });

QShared.Com_Printf(sb.ToString()); // "Inverse fast square root calculated: 0.15403557"

License

This is a coding hobby project based on open-source Quake III code. You may use it under the GPLv3 license (look here)