grafx - Extensible Java Graphics Package Code

Reverting level 23 to having standard two second system drop timer.

Tidying up the EvalFunction metrics.

Slowing down the animation a little bit. This is mostly for the computer
player, to make the play look simpler.

Went over ComputerPlayer with a fine-toothed comb.

Giving the SinglePlayerLevelAction computer player the user input.

The computer player actually works now.

Made huge progress on ComputerPlayer last night, but wasn't able to commit.

Switching 's' and 'w' keys again.

Adding comment related to possibility of translations in direction Z_AXIS.

Don't support translation in direction Z_AXIS.