OpenCog is an Open Source software project aimed at directly confronting the AGI challenge, based on mathematics and using biologically inspired algorithms, including algorithms for common-sense reasoning and machine learning. Components include natural language processing and speech generation, robotics, game control, and vision.
RufasGate is a combination of the Portal and Sokoban games. Using stargate terminology, there are Zero Point Modules (ZPMs) that power the portal guns, which in turn create the two ends of a temporary and short range wormhole, a shortcut through space-time, that allows obstacles to be bypassed. In order to empower the portal guns, all cylindrical ZPMs must be bumped onto their base receptacles. There are currently only four levels, and no way to save a game. RufasGate is also a testbed for learning/illustrating various modern OpenGL techniques including cubemaps, water reflections, sound, and glsl shader capabilities. For anyone planning to use SDL2, it illustrates key-mapping, to get improved keyboard responsiveness from SDL. It supports laptops and high DPI Mac Retina displays.
RufasCube is a slider puzzle where there is a 3x3x3 arrangement of cubelets with the center one missing, allows sliding permutations. After a randomization, the goal is to restore the cube to its original configuration based on color and alphabetic hints. It is challenging, but not as difficult as a Rubik's cube. Here, diligence pays off. Also, incremental solution is possible - you can unscramble one slice at a time. When you finish, you can see the entire English alphabet appear on the 26 cubelets. It supports laptops and Mac Retina displays.
libstudxml is a streaming XML pull parser and streaming XML serializer implementation for modern, standard C++. It has an API which the authors believe should have already been in Boost or even in the C++ standard library. It is compact, external dependency-free, and reasonably efficient. The XML parser is a conforming, non-validating XML 1.0 implementation which is based on tested and proven code.
Fl_Highlight_Editor is a drop in replacement for the FLTK default editing widget, with the ability to highlight and modify text with an embedded scripting language. The widget is fully self-contained and it doesn't depend on anything except the FLTK library, making it suitable for embedding inside an existing project.
Minetest-Classic is a fork of Minetest-C55, an infinite-world block sandbox game and a game engine, inspired by InfiniMiner, Minecraft and the like. It aims to improve speed, fix bugs, and add features and functionality. The game includes over 400 blocks, craft items, and tools, in both functional and decorative types. Minetest-Classic has a focus on immersive gameplay where in-world mechanisms are preferred over special commands, such as using incinerators instead of a /pulverise command, or craft guides being implemented as part of the in-game book system, rather than as a special menu item. In addition to single player mode, online multi-player is also available.