a Lisp Logos Legend

A few weeks ago, I jammed a clim lisp orgfile that was what I knew about logos turtle drawing. It looked like this:

Lots of fun. The gist of logos is that your turtle (the circle on there) is either leaving lines, or not, called having its tail down, and you can turn your turtle some number of degrees spinwise, or you can move your turtle forward.

Recording sequences and repeating sequences from different starting points gets pretty crazy, fast. Look at the funny scribble.

Historically, Logos was used in school computer education starting about 1970 and had many major clones and releases, including one available on amszmidt's MIT CADR emulation https://tumbleweed.nu/lm-3 . I actually met someone in NZ who had encountered a logos demo as an Advanced Robotics Topic around 1970 (the software above couples with a robot that does exactly what the on-screen turtle does).

It has been used as a game engine, so I've heard. The turtle gets replaced by a sprite. Maybe multiple turtles. The sprites can move. Turtle drawing is used to create game graphics. I will also use the lines to trigger events (such as 'cannot walk here').

That's what's up! So I'll extend the turtle engine a bit in this direction, and walk a turtle player around a turtle-drawn world.

Another hope and dream for this jam is to cffi into veilid.com for networking. Multiple internetworked turtle players would be great.