[WIP] Galaga conversion

[saimon69]

This is so darn good so far!

[Marconelly]

This is looking beautiful! Is the footage from A1200? What are your current performance expectations?

[jotd]

ATM this is running on ECS winuae at 50 fps but it needs a lot of optimizing even to run at 25 fps with cycle exact.

There are a lot of small BOBs to draw, which takes a lot of time. But the BOBs are 3 color + black, and mainly either bees (blue/yellow) or moths (red). So, by picking palette indexes carefully (colors 1,2,3 and 4,8,12), it's possible to use half the current blits (2 bitplanes per alien instead of 4 bitplanes), because most aliens only use 2 bitplanes. I'll try that soon.

Apart from that, the game is really doing well. Ship capture & double ship features are now working, so the logic of the game is nearly 100%.

[Marconelly]

Originally Posted by jotd

There are a lot of small BOBs to draw, which takes a lot of time. But the BOBs are 3 color + black, and mainly either bees (blue/yellow) or moths (red). So, by picking palette indexes carefully (colors 1,2,3 and 4,8,12), it's possible to use half the current blits (2 bitplanes per alien instead of 4 bitplanes), because most aliens only use 2 bitplanes. I'll try that soon.

Yes, that should help a ton. Fingers crossed you get it working at 25FPS on regular A500 (and hopefully player ship movement could be pulled off at 50FPS)

[jotd]

I could use 2 bitplanes instead of 3 only for bees and moths, and also bosses (when they're it).
Not enough for 50 fps but it saves a lot of bandwidth for the same visuals!

[jotd]

Ok, releasing a very early version in the zone, which is playable with some visual bugs. It runs very well on 68060/50 at 50 fps, but can be run on slower machines using whdload options (slow machine).

ATM on 68000 it looks pretty slow but still playable.

Game will crash on game over too... Only 2 lives too... But still can be played. No need to report bugs, I have a long list of them. If it's playable on slow machines I'd be glad to know.

This port was started about a year ago, with full Z80 source from Glenn Neidermeier and gfx from Mark, and was halted several times, but now it's drawing completion and it plays exactly like the arcade

[PascalDe73]

Hi JOTD,

Many Thanks for Early Version.

You can find my GlowIcons

Pascal