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chromatic (983)

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Monday May 25, 2009
06:15 PM

Nostalgia is Turtles All the Way Down

[ #39032 ]

I spent the day working with my friend Dave Woldrich (of CardMeeting infamy). He brought out a couple of old COMPUTE!'s Gazette issues and we reminisced about how we learned to program.

Here's a fun Turtle BASIC-ish program we put together in a couple of minutes. The syntax isn't quite authentic, but writing a little language for this would be easy.

20 SET counter, turns
30 SHOW turtle
40 MOVETO turtle, 160, 10
50 PENDOWN turtle
60 FACE turtle, 90
70 IF counter LT 0 GOTO 130
80 PENCOLOR turtle, RANDOM * 255
90 WALK turtle, steps
100 TURN turtle, degrees
110 SET counter, counter - 1
120 GOTO 70
130 PENUP turtle

To draw a circle, set turns to 360 and degrees to 1. To draw a square, set degrees to 90 and turns to 4. steps is the number of pixels in length of a side of the polygon.

As silly as this is (and over 25 years since writing a program like this), the nostalgia factor is immense.

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