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(Sega Saturn homebrew) Sonic Z-Treme Homebrew 3D game for the Saturn

#1 User is offline XL2 

Posted 06 July 2017 - 10:12 PM

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Good day!

I've been programming a Sega Saturn game since march of 2017 using the Sega Graphic Libraries and my own engine.
It's not an exact 1:1 reproduction of Sonic X-Treme, but it aims to take ideas from this game and put it on the Saturn.

The game works on stock hardware at 30 FPS - and 30-20 FPS during splitscreen.

Here it is in action (WIP) on real hardware :

Newer version in SSF emulator :

This post has been edited by XL2: 31 July 2018 - 11:17 AM

#2 User is offline Neo Hazard 

Posted 06 July 2017 - 10:23 PM

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Been seeing this kicked around a couple Discords I'm in, and gotta say, it looks super impressive! Don't know a lot about programming, but I know the Saturn is (was?) a pain to work with so to have this much running is astounding. Hope you'll keep us updated!

#3 User is offline Mega Spit 

Posted 06 July 2017 - 10:30 PM

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This looks amazing so far. It looks more like what I imagined X-Treme to be as a kid. Meaning, it looks better than the playable builds that came out a few years earlier turned out to be.

I'm really impressed that you have it running on the Saturn itself. I didn't even know that Saturn homebrew was a thing.

#4 User is offline ICEknight 

Posted 06 July 2017 - 11:54 PM

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Wow, that's some really impressive piece of work.

Quick! To the time machine! :v:

#5 User is offline Ravenfreak 

Posted 07 July 2017 - 07:35 AM

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This is amazing! I've subscribed to your channel and look forward to more updates. It's not everyday you see Saturn homebrew, especially based around Sonic. :)

#6 User is offline Dark Sonic 

Posted 07 July 2017 - 07:46 AM

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Already looks more playable than Sonic X-treme ever did :specialed:

But seriously nice work. I look forward to seeing more of this.

#7 User is offline Kono Mike da! 

Posted 07 July 2017 - 08:06 AM

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Niiice. Please do continue this project!

#8 User is offline JcFerggy 

Posted 07 July 2017 - 08:34 AM

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This looks really impressive. I curious what Andrew75's thoughts on this are.

#9 User is offline synchronizer 

Posted 07 July 2017 - 09:25 AM

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I am curious about what the code and project structure for a Saturn game like this looks like.

#10 User is offline Andrew75 

Posted 07 July 2017 - 01:12 PM

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View PostJcFerggy, on 07 July 2017 - 08:34 AM, said:

This looks really impressive. I curious what Andrew75's thoughts on this are.

I think it looks good ! We've spoken on YouTube about trying to get one of the levels that I had recreated in the past sent over to test in Sonic Z-Treme. I been waiting for my Jo-Engine account to activate for the past few days, Seems its activated now, and next time that I'm at the development computer, i'll be sending over the files that were prepared a few days back. Most likely this evening.

#11 User is offline Shalpp 

Posted 10 July 2017 - 11:51 PM

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As far as audio, are you going to stick with purely sampled audio? Or are you gonna attempt to work the Saturn's internal synth?

#12 User is offline XL2 

Posted 11 July 2017 - 08:39 AM

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So far for audio things are pretty broken, but my todo list is so long that it falls back to lower priority for now. I will probably stick to sampled audio, but I will need proper 11025 hz files (or just convert them properly). The Saturn got 8 audio channels, but currently the PCM files I use are filling 33-50% of it's capacity even if they are mono and downsampled. I'm not sure if it's a bug with Jo Engine or if it's a bug on my end (I haven't put much efforts in this yet), but I limit audio playback at the moment to 1 file only to prevent overflow crashes. I could work around this by coding a better audio implementation, but right now I want to focus on creating tools for windows to convert levels (such as those shared by Andrew75), bin-loader, mesh-loader, auto-generate the BSP and collision detection boundaries. Everything was handcoded, which takes way too much time.

Hopefully - if I'm succesful - I could put several levels from Sonic X-Treme (and the truly amazing conversions made by Andrew75 for Project AXSX) into my engine. I will probably have to remove some details in levels to reach 60 FPS (some people will disagree with that, but I think it's worth it).

Of course, I'm always happy to receive feedback and hints, so if you have suggestions for the audio don't hesitate!

#13 User is offline tylerfoxorwhatever 

Posted 11 July 2017 - 08:35 PM

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So far it looks pretty neat. Congrats!

#14 User is offline MathUser 

Posted 12 July 2017 - 06:50 PM

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This looks like a pretty good project. If I had a saturn I'd give it a go. That's for sure.

#15 User is offline The Game Collector 

Posted 15 July 2017 - 11:24 AM

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I have a modchipped Saturn so if you get a lot done and do a release in any stage, I'll be glad to be able to play it on real hardware. That will be amazing when Andrew75's PC version and your Saturn version are both done. What's cool is that there will be 2 different takes on how the game would have been. It's kind of like how there are alternate takes on how Hidden Palace Zone and other scrapped Sonic 2 levels should look.

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