Efficient BASIC coding for the ZX Spectrum

[+3code]

I've found this interesting text (in spanish and english):
http://blog.jafma.net/2020/02/24/effici ... -spectrum/

[uglifruit]

This is really good - some excellent ideas/tricks in there.

My next Crap Game might not be so crap!

[RWAC]

That would be a real shame.

[Morkin]

Plenty of ideas for the crap game compo..!

[DouglasReynholm]

Fascinating stuff, makes so much sense, but would never have drawn those conclusions myself.

[patters]

I found out about all of these optimisations in large part from IvanBasic when I wrote Artillery. He suggested I pursue them and initially I considered them perhaps marginal improvements not really worth reducing the legibility of my listing for (particularly the single letter variable names). Then when I finished the game I decided to scratch the itch and gradually profiled in BasinC and incredibly I pretty much doubled the speed of the game.

It is a bit of a pain having to have a variable lookup spreadsheet while you're coding though. And when you reorder those variables when you need another fast one but you only have 26 letters is a major ball ache.