Trun by Michael Kay
from Popular Computing Weekly Vol 3 No 40, 4-10 October 1984

The idea is to avoid the blocks and your own path and see how long you
can last. Use Q - up, A - down, O - left, P - right. It confirms you of
your high score when each go is over.

Program notes

Lines 60-70	Sets up variables.
Lines 80-99	Sets up screen.						(1)
Lines 100-200	Moves player.						(2)
Lines 220-240	Checks if player has hit anything.			(2)
Line 250	Adds to score.
Lines 400-440	Prints score, high score and what you crashed into.	(3)
Lines 500-570	Prints instructions.

notes:
(1)	I seem to have added some extra code here. Looks like it's to
stop an obstacle being placed at the start position.
(2)	A few lines have been combined here.
(3)	The score & high score routines were duplicated in the original
listing. I altered it so that the previously duplicated code is instead
in the new program lines 600-630.

Until I actually compared the listing with what was saved, I'd forgotten
doing any of this!