A downloadable game

download the fly.p 

(or fly.wav see below**)

Install a zx81 emulator such as EightyOne https://sourceforge.net/projects/eightyone-sinclair-emulator/

Set the memory size to 16k

Open the .p file in the emulator and play

The keys are x up,  n down. space bar or key to fire (also Cheetah joystick enabled if you play on real zx81). 

**To play on real zx81 you'll need to download the fly.wav then play the audio wave file over into the zx81 using a standard mono headphone lead from your audio (eg smartphone phone or laptop) into the zx81 EAR connector. You'll also need a 16K ram pack for that. I'm assuming if you are attempting this then you know what todo!

Download

Download
fly.p 4 kB
Download
fly.wav 2 MB

Comments

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(1 edit)

realised my emulator was running slightly faster than realtime !! so that's why it ran slightly slower on real ZX81, anyway I just rebuilt with reduced delay loop so runs faster, whilest hopefully still being playable

(1 edit)

I need to revisit this and add things like extra levels with different landscape,. possibly into a cave as well. More different enemies, different score for different enemies - multi rate enemies would be better, and one that track 

(1 edit)

updated with extra features:

1) you now get a new life at every 100 scored

2) text is printed when SAM launch warning at bottom

3) the missile smoke only extends 3 blocks below the missile so is (remotely) possible to dodge it from below. You can still shoot the missile if you're skillful enough :)

4) ground is no longer "shootable"

5) enemys now bigger but less of them (mercy!)

Stay posted for future updates