This is an implementation of XBTs in Lua. See the paper in the ASCENS book for the description of XBTs.
The implementation is in the file xbt.lua
Run the tests by invoking
$ lua ./test_all.lua
in the src folder.
The file main.lua holds a small example program. You can invoke it from the source folder as
$ lua ./main.lua
It currently runs two behaviors sequentially; the first one always succeeds in the fifth step, the second one randomly fails or succeeds after a random number of steps.