Blog

Quake3 modding quickstart

Sun, 28 Sep 2025 22:23:13 +0200

NOTE: WORK IN PROGRESS!

Found some mistakes or are some instructions unclear? Please feel free to write me to:
me <at> pythno <dot> org
Thank you!

Install ioquake3

We are going to use the ioquake3 sourceport. And we’re going to compile it ourselfes. You will need the development libraries for SDL2. Consult your package manager how to install them onto your system.

Clone and install ioquake3:

git clone git@github.com:ioquake/ioq3.git
cd ioq3
cmake -S . -B build -DCMAKE_BUILD_TYPE=Debug

We make a Debug build so that we can step through the code.

Gamedev Resources

Thu, 28 Aug 2025 20:27:58 +0200

This article is a compilation of books that I not only enjoyed a lot throuout my game-programming-journey but have also found very useful. The resources are categorized into different areas of interest, such as scripting, graphics programming, etc.
For each item I have written a short, personal piece that highlight what I value about them.

I hope this list will be helpful to you, the reader, as well.

Note that this is living document and is still in progress. I will complete and extend it over time. So check back from time to time if you’re interested.

Swept Sphere vs Linesegment

Wed, 05 Feb 2025 18:06:38 +0100

Kasper Fauerby presented this excellent article on how to collide moving ellipsoids with triangles: https://www.peroxide.dk/papers/collision/collision.pdf. After colliding the swept ellipsoid with the inside of the triangle he goes on to explain how to test for the collision with the three points of the triangle. This test leads to a quadratic formula of the known form of

\[ At^2 + Bt + C = 0 \label{eq:standard-quadratic-form} \tag{1} \]

He also explains that we arrive at the same quadratic form for testing the swept ellipsoid against the sides (linesegments) of the triangle. However, what the parts \(A, B\) and \(C\) are in case of the sphere vs. linesegment test is not being derived in the paper. This article tries to fill that gap.