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A python implementation of the MUV 2.0 to FuzzBall MUCK MUF compiler.

Project description

This is a pure python implementation of the MUV 2.0 compiler. It takes C-like MUV language source code, and compiles it to the more inscrutable forth-based MUF language, suitable for uploading to an fb6 (or later) Fuzzball MUCK chat server.

The MUV 2.0 Language

Creating MUF programs is an ugly, painful, nearly write-only experience, and that’s coming from the coder who designed most of the language. Why spend massive amounts of time debugging and keeping track of stack items, when you can write code in a more modern, readable language?

Instead of writing cryptic code like:

: showspecies[  -- ret ]
    var obj
    loc @ contents_array
    foreach obj ! pop
        obj @ player? if
            obj @ "species" getpropstr dup not if pop "Unknown" then
            obj @ "sex" getpropstr dup not if pop "Unknown" then
            obj @
            "%-30D %-10s %-30s"
            fmtstring
            me @ swap notify
        then
    repeat
;

You can write:

func showspecies() {
    for (var obj in contents_array(loc)) {
        if (player?(obj)) {
            ftell(
                "%-30D %-10s %-30s",
                obj,
                getpropstr(obj, "sex") || "Unknown",
                getpropstr(obj, "species") || "Unknown"
            );
        }
    }
}

Installation

Install using PyPi:

pip install pymuv

Installing from sources:

python3 setup.py build install

Usage

The muv program expects the input MUV source file to be given on the command-line. The MUF output will, by default, be written to STDOUT. Error messages will be printed to STDERR, and the return code will be non-zero if errors were found:

muv sourcefile.muv >outfile.muf

You can use -w PROGNAME to wrap the output in MUF editor commands:

muv -w cmd-whospecies whospecies.muv >whospecies.muf

Using -o OUTFILE will write the output MUF code to OUTFILE instead of STDOUT:

muv -o whospecies.muf whospecies.muv

Adding a -d to the command-line will add debugging code to the MUF output. Each line of MUV will add code like: "foo.muv:23" pop to the MUF output:

muv -d -o whospecies.muf whospecies.muv

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