HPL1 Engine Source Code
Yes, here it is at last the Engine that made the Penumbra Series.
Read through the TODO file for various known things that should be cleaned up / fixed.
Included are project files for Xcode, Visual Studio 2003 and Cmake (for Linux)
Contributing Code
We encourage everyone to contribute code to this project, so just sign up for a github account, create a fork and hack away at the codebase. We will start an Open Source forum on the Frictional Games forums as a place to talk about changes and to submit patches from your forks.
License Information
All code is under the GPL Version 3 license except for the "test" which are included under the ZLIB license. All of the assets are licensed under the Creative Commons Attribution Share-Alike 3.0 license except for the CG shaders which are under the ZLIB license. Please read the COPYING and LICENSE-* files for more information on terms of use.