Space Invaders Nostalgia at its best

When I did the ROUGOL talk I showed an incomplete version of Space Invaders, since then I have
had requests to finish my version of the game, I don’t know if there is a version available
that runs on the latest RISC OS ?. I seem to remember there was a hidden version in RISC OS 4.

Anyway it’s been sitting in the dark corners of my HardDisc for sometime and as part of my
ongoing attempt to avoid real work I got around to looking at it again :-) .

I have kept the original looking retro graphics rather than update them, mainly for nostalgic
reasons I think they look quite good.

I have tried to follow the original game as closely as possible.

The original trick of waiting once for the 23rd shot and then every 15th shot after to kill the UFO
will always return 300 points (Its amazing what useless information you can find on the web)
At other times it will randomly return 50,100,150 or 200

The fullscreen entries in the menus will be faded out if MODE 28 is not available I have tried
to test this as best as I can all my systems support MODE28 so if someone could try it on a
system with no MODE28 support like one of the laptops and let me know if it works OK.

I have tested the game on Titanium,PI2B,PI400 & Iyonix(really only fullscreen).

I am getting sick of playing the game so I thought I would release it and hopefully you can test
it out and let me know what you think?.

The main game runs at 50FPS and the score screen runs at 20FPS this was an easy way to print
text at a slower rate to the screen.

As always download from www.mbelect.co.uk/RISCOS

nice job Terry! Thanks a lot :)