collision detection works, only tested for direction UP
tree29371ca47dd6e4bb7487815e02dbbe5f70fd7e2a
-rw-r--r-- 10 .gitignore
-rw-r--r-- 20604 README.org
-rw-r--r-- 4778 build.xml
drwxr-xr-x - lib
-rw-r--r-- 736 prj.el
drwxr-xr-x - report
drwxr-xr-x - src
drwxr-xr-x - test