Befunge is an esoteric programming language that operates in a 2d space, allowing the instruction pointer (ip) to point in any direction.

This interpreter is based on the funge-98 spec, and implements a non-concurrent two-dimensional variant of the language.

Hello world:

0"!dlroW ,olleH">:#,_@

Count:

v                                        @
> & 00p 0 10p ;; 0. ;; " ", ;; > 00g 10g w @
v                                        <
> 10g 1+ 10p ;; 10g. ;; " ",   ^

Just pass a filename to the interpreter:

$ bin/befunge examples/hello.b98

You can also pass the --debug option to get a log of all instructions.

$ bin/befunge --debug examples/hello.b98

Highly experimental, unstable, incomplete. PRs welcome.

• Funge-98 spec
• Befunge on Esolang