Xmas2023 for VIC-20

Author: Alan Monroe
Category: Christmas Challenge
System: VIC-20
Language: BASIC
Len source code: 382
Len exe file: 295
Len code only: 295
Instructions:
Drag & drop xmas2023.prg onto VICE VIC-20 emulator.
Description:
Draws three large diagonal rectangles using delta movement of an x & y coordinate, "bouncing" off the sides of the draw area.
Comments:
I'm curious how many other people will strike upon the diagonal rectangle approach. I figure most people will draw top-to-bottom.