path gen update

-rocks in right places wrt paths being created
-rocks still form within paths, paths “go back” over themselves
-weird randomInt being negative error occasionally
-errors with generating optimal path along edges of screen, its always
off by 1
minor improvements to path gen

still putting rocks in existing paths though
path gen very close to working

-path generates until it can no longer generate without breaking rules,
which is good
-added method to keep game from being lame and short, still need to
implement
-addGoal doesn’t work yet
-still some rogue rocks in paths…
-paths can’t be longer than like 3 squares for some reason…