Metal Slug port from Atari STE to MegaDrive / Genesis - WIP

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masteries
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Metal Slug port from Atari STE to MegaDrive / Genesis - WIP

Post by masteries » Mon Dec 13, 2021 1:34 pm

Video of current WIP MegaDrive / Genesis version:


https://www.youtube.com/watch?v=-hl3hkKaHa8



This Metal Slug port is a conversion from my own Metal Slug port for Atari STE computer
Mainly all the game engine is being ported from Atari STE to MegaDrive / Genesis.



Video of Atari STE version:


https://www.youtube.com/watch?v=gyRBcTnn-5M&t=115s



Audio playback is 100% based on digital samples, using a custom made sound driver that provide 3 channels mixed at 16 KHz.
Samples are compressed, in order to save ROM space, and Real-Time decompressed using the Z80 processor.


Currently, the same samples and graphics from the Atari STE version takes only 1 MB of MegaDrive / Genesis ROM space, while the STE version takes 3.6 MB


There is a high detailed background composed of up to 8600 tiles, and a parallax background. Background uses up to 61 different colours. Custom MegaDrive / Genesis tools are made to create map graphics data, and to provide colouring to the map tiles.



Many things are still pending to be ported to MegaDrive / Genesis,
Stay tuned!

cero
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Re: Metal Slug port from Atari STE to MegaDrive / Genesis - WIP

Post by cero » Mon Dec 13, 2021 6:13 pm

Did you see Vetea's version? Interesting timing that both appear within days.

https://www.sega-16.com/forum/showthrea ... -Megadrive

masteries
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Re: Metal Slug port from Atari STE to MegaDrive / Genesis - WIP

Post by masteries » Sun Feb 13, 2022 10:23 am

Work in progress: Entities management system & collision scheme


- Tested on Real Hardware, a Megadrive 1 plus OSSC -


https://www.youtube.com/watch?v=kcFOhYul6cY

Chilly Willy
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Re: Metal Slug port from Atari STE to MegaDrive / Genesis - WIP

Post by Chilly Willy » Mon Feb 14, 2022 2:14 am

Sonic needs some speed boots there - he's a bit slow...
:lol:

Top l'âne
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Re: Metal Slug port from Atari STE to MegaDrive / Genesis - WIP

Post by Top l'âne » Tue May 17, 2022 5:56 pm

Metal slug + atari st + megadrive...

Nice bunch of key words. :mrgreen:

Your demo shows pretty good stuff!

masteries
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Re: Metal Slug port from Atari STE to MegaDrive / Genesis - WIP

Post by masteries » Mon Jun 13, 2022 2:01 pm

Release date is near,

Meanwhile, a debug video, sprite collision testing:

https://www.youtube.com/watch?v=ROMCReXx_Zk

Top l'âne
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Re: Metal Slug port from Atari STE to MegaDrive / Genesis - WIP

Post by Top l'âne » Thu Jun 16, 2022 12:17 pm

You must be quite excited waiting for your release.

Congrats for this job!


How long should last the definitive port? Single mission or whole game?

AmateurSegaDev
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Re: Metal Slug port from Atari STE to MegaDrive / Genesis - WIP

Post by AmateurSegaDev » Sat Jun 18, 2022 8:04 pm

Very impressive!

masteries
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Re: Metal Slug port from Atari STE to MegaDrive / Genesis - WIP

Post by masteries » Thu Jun 30, 2022 10:36 am

I released the first beta ROM version for Megadrive / Genesis,

Download at video description:

https://www.youtube.com/watch?v=wDpg9luIOtM

Top l'âne
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Re: Metal Slug port from Atari STE to MegaDrive / Genesis - WIP

Post by Top l'âne » Mon Jul 11, 2022 12:03 pm

I played this demo a couple of times.

I noticed a Marco's respawn bug, if interesting.
Music sounds really rough to me, this would be the very only issue to your artistic stuff.

I must play arcade to much. I realized the autofire at the very end of the test.

Not a single lag..! 8)

That's pretty awesome demo.

Keep on working Masteries. :D

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