Uploaded November 2020 | Updated September 2026, 2 weeks ago

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Find me on Twitter, @JAMOGRAD!

This week I look at a program I typed in LIVE on Twitch, first on the ZX81 and then on the ZX Spectrum. It's Forest Fire, a strategy/simulation where you try to put out a.... well, a forest fire. All from the 1977 book "Stimulating Simulations".

Video contains FLASHING and LIGHTNING and BEEPING and ACTING!

0:00 Start
0:33 Introduction
2:15 ZX81 version
4:23 Source... FIND THE BUG
7:21 ZX Spectrum
9:32 UDG Designer S Robert Speel
11:44 Making it Good
16:07 UDG Rotate & Mirror S Robert Speel
17:32 Making it Better
19:11 Thumbnail!
19:22 S-S-Sample
20:50 BEST VERSION
29:37 End Card




Thanks to ZombiWorkshop for logo and theme.

pexels.com/photo/fire-orange-emergency-burning-1749

provided a picture of fire.

S Robert Speel provided some useful routines, as did Heikki Julkunen!

spectrumcomputing.co.uk/entry/24186/ZX-Spectrum/S-S-Sample
archive.org/stream/YourSinclair37Jan89/YourSinclair/YourSinclair28-Apr88#page/n94/mode/1up

Game should be available with a bit of luck from Jim Blimey's website in TZX and TAP form. You need 48K though!

jimblimey.com/games

If you want to watch me type it in for an hour or so while dressed up like an idiot...
twitch.tv/videos/796936186