lpi, or Lode's Programming Interface, is game programming toolkit wirtten in C++, that uses SDL and OpenGL.
lpi is multiplatform. In Windows, the mingw32 compiler, and the IDE Dev-C++, are highly useful for this, in Linux it's just 2 seconds to type the g++ command.
I wanted to place it on Google Code instead of sourceforge, but Google Code said that a project on sourceforge already existed with that name and refused to create it. It didn't exist on sourceforge at all however, so I created it myself there then.
It contains a lot of useful things to quickly develop a 2D tilegame or a 3D OpenGL game, in C++.
It supports:
multiplatformness
an OpenGL GUI with draggable windows
a texture class
game algorithms such as path finding
3x3 matrix and vector math, and a camera class
a built-in bitmap font
SDL and OpenGL wrappers
XML parsing and generating
base64 encoding and decoding
PNG loading with LodePNG to load textures
gameloop handling
only two external library dependencies: SDL and OpenGL
and more...
It changes a lot, sometimes things are added or extended, and sometimes I do cleanups in the lpi code that make the interface not backwards compatible but are an improvement.
lpi is useful for pure 2D tile games, 3D OpenGL games, and even non-game programs that need a GUI in OpenGL. For per-pixel graphics, something like QuickCG is more suitable.
Here are screenshots of some things that can be made with lpi:
