Use the space key to pause or resume the game.
Sometimes Maven won't copy the resources folder and will fail running. If that bothers you, run mvn javafx:run
without clean until it copies the folder (two times max).
That way It won't remove the compilation folder 'Project' and won't forget to copy the resources (because they'll be there already).
If you want to modify the code you'll need mvn clean javafx:run
to automatically clean and recompile the files.
Edit STEPTIME
to modify the time between generations or RWIDTH
and RHEIGHT
to change the cell sizing.