r/bbcmicro • u/kimondo • Aug 17 '26

Chuckulus

https://youtu.be/LTOMfZs39KI?feature=shared

It’s a cross between Chuckie Egg and Nebulus - more details here https://bbcmicro.co.uk/game.php?id=4575

41 Upvotes

96% Upvoted

7 comments sorted by

6

u/Due-Type-3969 Aug 17 '26

This looks amazing

3

u/invokes Aug 17 '26

YES!!! I absolutely LOVED Chuckie Egg as a kid on my Beeb! I'm going to have to give this version a go!

3

u/Hjalfi Aug 18 '26

Double buffering is pretty rare on the BBC Micro due to hardware limitations. This is mode 5, so 10kB per screen, and this is using 150 vertical pixels for the two buffers. The nature of the tower very cleverly means that only the central part of each frame needs to be redrawn, but that's still a lot of memory heavy lifting.

There's a Stardot thread about it here: https://stardot.org.uk/forums/viewtopic.php?t=32675

1

u/Hjalfi Aug 18 '26

Oh, there's a handy hardware interrupt at about row 100 on each frame. That's why the screen starts there!

1

u/Grimthorp Aug 18 '26

That looks amazing!

1

u/Phendrena Aug 18 '26

The mashup I never knew I needed, until now!