ZX81 Jump v0.8 - enemy collision detect, lives and time

en.m.wikipedia...
I'm working on a new platform game called Jump for the Sinclair ZX81 written in pure z80 assembly language. Building on the previous version, I've coded up the logic for collision detection with the enemy sprites. Also added a time limit of 10 minutes, though that doesn't quite work yet, the stopclock is quite accurate though as it's based on the vsync frames. In a nod to the C64 I called the variable that tracks 50th's of a second "gameTimeCounterJIFFIES"
Also added fun room names :)
As before this is work in progress, there are 5 rooms though and with the way the room config is now it's good enough to be able to keep adding rooms. I definitely want to also have doors to left and down as well as other features like switches or "special tokens" that do other things like open secret doors or bonus points.
I used the excellent sprite editor by ChibiAkumas:
www.chibiakuma...
github.com/Adr...
#zx81 #sinclairZX81
#assemblyLanguage

[@Shnowz]

Nice

[@idranardone4500]

This is uhh.. interesting