befunger

befunger is a Befunge interpreter written in Python. I wrote it in an afternoon with my friend Jan Steinebrunner. We set the boundary conditions of the code plane to be periodic. The code and variable stack may be visualised at runtime.

Code samples

We obtained sample code from the Esolangs page for Befunge. With the exception of more_or_less.bf, we did not modify the code.

Usage

You may run a befunge file filename as follows:

python befunger.py filename

We recommend trying the number guessing game more_or_less.bf.

You can watch the code as it is being executed by further specifying a float step-size. If you do, befunger will pause for step-size seconds between consecutive steps. For example, to run more_or_less.bf with a delay of 0.05 seconds per step, run:

python befunger.py more_or_less.bf 0.05

Alternatively, you can use befunger to run befunge files from your own python program by calling

import befunger

befunger.execute(filename, step_size)

where step_size is optional, as above.