This is a simulation of evolving agents trying to win a one-on-one duels within a two-dimensional physical environment.
You can probably just run make, which produces an optimized build by default.
You need a C++11 compiler and SDL2. The Makefile probably requires Unix.
When starting the simulation (by running ./bouncers,) you can provide a
numeric seed as the first argument. If you don't provide one, the program will
choose a seed for itself.
While the simulation is running, you will see an increasing number which is how many generations have passed. You can press SPACE to pause/unpause. Pressing ENTER animates one round for you. The agents are the moving circles, and the time remaining is shown in the top left. If an agent has a smaller circle inside its body, that means it has the higher score.
I've decided not to bother writing a configuration parser. To customize the simulation, you can edit the files src/conf.hpp and src/score.cpp. The former contains many numeric parameters, and the latter lets you decide how to score the agents.