The data directory must be extracted into the same folder as jpllauncher_1.0.4.py and left as-is or the program will not be able to access the data files and will crash.
There's a list of ideas and things to do in the source file.
As of March 18, 2010, I am planning on completely rewriting this program to make use of classes (which I recently learned how to use) as well as other more efficient programming tricks.
This game requires python and pygame. Python 2.5 and up should work as well as pygame 1.8 and up.
From the main menu, press S to start.
The 'solar system' is now generated. The user may press ENTER to randomize to a different 'solar system' or press SPACE to start targetting.
The user may change the angle using the LEFT and RIGHT arrows and the power (speed) with the UP and DOWN arrows. The user may launch the probe with SPACE.
Now the probe is controlled only by gravity. The player may adjust the game's frame-rate using the + and - keys (not numlock keys).
The game (a problem inherent in python?) cannot handle controlling more than 1000 frames per second and, once that point is reached, the game appears to go at the maximum possible frames per second.