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Me and @bbbbbr recently ported the @Zalo's ZGB library. Now it allows to compile projects for the different Game Boy clones (Mega Duck, Analogue Pocket .pocket format) and the Game Gear. For now Game Gear library is lacking some features like SFX and music, and also there are no platform-dependent assets yet, but that is on my todo list. As well as the SMS support. For those who are interested, links below.

ZGB library: https://github.com/untoxa/ZGB/tree/develop

The first ported ZGB game is "Kaiju Feeder" by @Zalo.

Game source files: https://github.com/untoxa/Kaiju-Feeder

ROM file updated 2024-02-26

image.png (19.96 KB)

Title screen

image2.png (13.39 KB)

Change level banner

image3.png (21.55 KB)

Gameplay

KaijuFeeder.zip (16.4 KB)

ROM file

Wonderful to see such a nice progress!!

Sushi Nights by Monis Games, the #GBCOMPO21 entry! Time countdown is not showing yet, and a few more improvements yet to go, but... it is working!

Game sources are available here: https://github.com/untoxa/SushiNights

image.png (24.88 KB)

Title screen

image (1).png (17.05 KB)

Gameplay

image (2).png (14.74 KB)

Level finished

SushiNights.zip (27.44 KB)

ROM file

If someone want to help me with the 4bpp Game Gear graphics or music/sfx - you are very welcome. Also SMS ZGB port suggestions.

Is 4 grays the only option 'out of the box'?

sverx wrote

Is 4 grays the only option 'out of the box'?

Of course not. Those two games were DMG and i simply miss colorful assets. Something might not be fully tested yet, but should work.

toxa wrote

Of course not. Those two games were DMG and i simply miss colorful assets.

OK, I didn't express myself correctly. What I meant is - is there some alternative palette one can select when playing games that were created on a monochromatic 2bpp system?
Several years ago Haroldook and I tried to create a compatibility layer for (the old) GBDK and one could either use grayscale or 'greenscale' (is it a word?)...

Quote

As well as the SMS support.

This is wonderful and i hope that your to do list be soon!

Quote

If someone want to help me with the 4bpp Game Gear graphics or music/sfx - you are very welcome. Also SMS ZGB port suggestions

Slogra could help you in this department. I have a question: The GB game not have colors but the dev not could give a pallete layout in how to simulate the colors for game? So port it for GG/SMS would be more easy, not?

sverx wrote

OK, I didn't express myself correctly. What I meant is - is there some alternative palette one can select when playing games that were created on a monochromatic 2bpp system?

Sorry, i don't get your question. When compiling ZGB project for the game gear, it is not 2bpp anymore. You put in 4bpp assets, recompile and here we go. Or just load the other palette if you want to keep the original assets.

segarule wrote

The GB game not have colors but the dev not could give a pallete layout in how to simulate the colors for game? So port it for GG/SMS would be more easy, not?

you don't need to "simulate colors". we just need the native game gear assets. in PNG format.

as you can see, spritesheets are in PNG format and look this way. they might be redrawn in 16 colors, put into the platform-specific subfoldres and recompile. also game should set that palette in the code of course.

bubble.png (216 B)

bubble sprite

playermenu.png (714 B)

menu sprites

and what about the fixed screens? (game over, etc)

I may have a look and try to add 4bpp resources.

toxa wrote

Sorry, i don't get your question. When compiling ZGB project for the game gear, it is not 2bpp anymore. You put in 4bpp assets, recompile and here we go. Or just load the other palette if you want to keep the original assets.

Yes, I was wondering if one could have the game with the original 2bpp assets mapped to a different palette, to retain the style of a GB game.
No worries.

toxa wrote

as you can see, spritesheets are in PNG format and look this way. they might be redrawn in 16 colors, put into the platform-specific subfoldres and recompile. also game should set that palette in the code of course.

You mean that i can take the assets and give to it colors of my choice with 16 colors pallete?

segarule wrote

toxa wrote

as you can see, spritesheets are in PNG format and look this way. they might be redrawn in 16 colors, put into the platform-specific subfoldres and recompile. also game should set that palette in the code of course.

You mean that i can take the assets and give to it colors of my choice with 16 colors pallete?

yes, you can. Are you going to have a look? (So then I'll skip)

kusfo wrote

segarule wrote

toxa wrote

as you can see, spritesheets are in PNG format and look this way. they might be redrawn in 16 colors, put into the platform-specific subfoldres and recompile. also game should set that palette in the code of course.

You mean that i can take the assets and give to it colors of my choice with 16 colors pallete?

yes, you can. Are you going to have a look? (So then I'll skip)

No. When i put the question is to know if anyone can redraw the colors. "I" not mean me in particular but anyone. You can continue helping toxa.

I mean, I'm not a very good artist, but I can do something acceptable

sverx wrote

Yes, I was wondering if one could have the game with the original 2bpp assets mapped to a different palette, to retain the style of a GB game.No worries.

that is a simple as calling set_bkg_palette()/set_sprite_palette() somewhere in the beginning of game state initialization callback(s). before this line, for instance: https://github.com/untoxa/SushiNights/blob/master/src/StateSplashZGB.c#L15

kusfo wrote

and what about the fixed screens? (game over, etc)

situation is a bit different, but in general should work similar way. working on that on the ZGB side.

Sushi Nights update. As said before, colorizing is just putting the platform specific assets.

image.png (15.94 KB)

screenshot

SushiNights.zip (28.31 KB)

ROM file

now with the VGM sound effects! automatically converted from the VGM files of the game assets.

SushiNights.zip (29.51 KB)

ROM file

Another ZGB game ported to the Game Gear: Super Princess 2092 Exodus. Missing SFX, music and final credit text. Also colorful assets.

image.png (23.61 KB)

menu screen

image2.png (22.29 KB)

Level title

image3.png (30.01 KB)

In-game screen

GBJAM2016.zip (28.3 KB)

ROM file

ZGB library github repo now has CI builds of the ZGB library for the most popular operating systems: windows, linux, macos. You can download them here: https://github.com/untoxa/ZGB/actions/workflows/zgb_build_and_package.yml under the "ZGB Build and Package" link (you must be logged on to github to see the build artifacts.

Those builds contain the ZGB library, all necessary tools built for the selected platform, project template, docs, and also bundled matching GBDK-2020 release for convenience. All you need is GNU Make (plus mingw/msys or the modern WSL for windows) and python3 for some few python tools in the ZGB toolchain. Then you just set a couple of environment variables: GBDK_HOME and ZGB_PATH and you are ready!

Also the latest version integrates support for the furnace music modules with the help of the wonderful driver written by Joe Kennedy: https://www.smspower.org/forums/20045-BanjoSMSMusicAndSfxDriverUsingFurnace github: https://github.com/joffb/banjo

Example projects may be seen in this topic above. Hope you like it. Looking forward for your new homebrew projects.

splash_zgb.png (1.53 KB)

ZGB logo

Great!
We may port the old ChainBreak that @ManuSegura did for the GB some time ago! :-D

It is not necessary to port anything game boy. I mean ZGB is not just for porting the game boy games or projects. You can make whatever new ORIGINAL games. More to say, ZGB/GBDK-2020 is better and more convenient game making library, than any other existing for the SMS/GG.

Author	Message
toxa Joined: 09 Aug 2021 Posts: 131	ZGB library for the SMS/GG Posted: Sun Feb 25, 2024 8:20 pm
toxa Joined: 09 Aug 2021 Posts: 131	Me and @bbbbbr recently ported the @Zalo's ZGB library. Now it allows to compile projects for the different Game Boy clones (Mega Duck, Analogue Pocket .pocket format) and the Game Gear. For now Game Gear library is lacking some features like SFX and music, and also there are no platform-dependent assets yet, but that is on my todo list. As well as the SMS support. For those who are interested, links below. ZGB library: https://github.com/untoxa/ZGB/tree/develop

toxa Joined: 09 Aug 2021 Posts: 131	Posted: Sun Feb 25, 2024 8:26 pm Last edited by toxa on Mon Feb 26, 2024 7:08 am; edited 1 time in total
toxa Joined: 09 Aug 2021 Posts: 131	The first ported ZGB game is "Kaiju Feeder" by @Zalo. Game source files: https://github.com/untoxa/Kaiju-Feeder ROM file updated 2024-02-26 image.png (19.96 KB) Title screen image2.png (13.39 KB) Change level banner image3.png (21.55 KB) Gameplay KaijuFeeder.zip (16.4 KB) ROM file

kusfo Joined: 29 Mar 2012 Posts: 886 Location: Spain	Posted: Sun Feb 25, 2024 10:17 pm
kusfo Joined: 29 Mar 2012 Posts: 886 Location: Spain	Wonderful to see such a nice progress!!

toxa Joined: 09 Aug 2021 Posts: 131	Posted: Mon Feb 26, 2024 9:51 am
toxa Joined: 09 Aug 2021 Posts: 131	Sushi Nights by Monis Games, the #GBCOMPO21 entry! Time countdown is not showing yet, and a few more improvements yet to go, but... it is working! Game sources are available here: https://github.com/untoxa/SushiNights image.png (24.88 KB) Title screen image (1).png (17.05 KB) Gameplay image (2).png (14.74 KB) Level finished SushiNights.zip (27.44 KB) ROM file

toxa Joined: 09 Aug 2021 Posts: 131	Posted: Mon Feb 26, 2024 9:55 am
toxa Joined: 09 Aug 2021 Posts: 131	If someone want to help me with the 4bpp Game Gear graphics or music/sfx - you are very welcome. Also SMS ZGB port suggestions.

sverx Joined: 05 Sep 2013 Posts: 3828 Location: Stockholm, Sweden	Posted: Mon Feb 26, 2024 12:49 pm
	Is 4 grays the only option 'out of the box'?

toxa Joined: 09 Aug 2021 Posts: 131	Posted: Mon Feb 26, 2024 5:31 pm
toxa Joined: 09 Aug 2021 Posts: 131	sverx wrote Is 4 grays the only option 'out of the box'? Of course not. Those two games were DMG and i simply miss colorful assets. Something might not be fully tested yet, but should work.

sverx Joined: 05 Sep 2013 Posts: 3828 Location: Stockholm, Sweden	Posted: Mon Feb 26, 2024 5:50 pm
	toxa wrote Of course not. Those two games were DMG and i simply miss colorful assets. OK, I didn't express myself correctly. What I meant is - is there some alternative palette one can select when playing games that were created on a monochromatic 2bpp system? Several years ago Haroldook and I tried to create a compatibility layer for (the old) GBDK and one could either use grayscale or 'greenscale' (is it a word?)...

segarule Joined: 23 Jan 2010 Posts: 439	Posted: Mon Feb 26, 2024 6:21 pm
segarule Joined: 23 Jan 2010 Posts: 439	Quote As well as the SMS support. This is wonderful and i hope that your to do list be soon! Quote If someone want to help me with the 4bpp Game Gear graphics or music/sfx - you are very welcome. Also SMS ZGB port suggestions Slogra could help you in this department. I have a question: The GB game not have colors but the dev not could give a pallete layout in how to simulate the colors for game? So port it for GG/SMS would be more easy, not?

toxa Joined: 09 Aug 2021 Posts: 131	Posted: Mon Feb 26, 2024 10:53 pm
toxa Joined: 09 Aug 2021 Posts: 131	sverx wrote OK, I didn't express myself correctly. What I meant is - is there some alternative palette one can select when playing games that were created on a monochromatic 2bpp system? Sorry, i don't get your question. When compiling ZGB project for the game gear, it is not 2bpp anymore. You put in 4bpp assets, recompile and here we go. Or just load the other palette if you want to keep the original assets.

toxa Joined: 09 Aug 2021 Posts: 131	Posted: Mon Feb 26, 2024 10:55 pm
toxa Joined: 09 Aug 2021 Posts: 131	segarule wrote The GB game not have colors but the dev not could give a pallete layout in how to simulate the colors for game? So port it for GG/SMS would be more easy, not? you don't need to "simulate colors". we just need the native game gear assets. in PNG format.

toxa Joined: 09 Aug 2021 Posts: 131	Posted: Tue Feb 27, 2024 8:08 am
toxa Joined: 09 Aug 2021 Posts: 131	as you can see, spritesheets are in PNG format and look this way. they might be redrawn in 16 colors, put into the platform-specific subfoldres and recompile. also game should set that palette in the code of course. bubble.png (216 B) bubble sprite playermenu.png (714 B) menu sprites

kusfo Joined: 29 Mar 2012 Posts: 886 Location: Spain	Posted: Tue Feb 27, 2024 8:40 am
kusfo Joined: 29 Mar 2012 Posts: 886 Location: Spain	and what about the fixed screens? (game over, etc) I may have a look and try to add 4bpp resources.

sverx Joined: 05 Sep 2013 Posts: 3828 Location: Stockholm, Sweden	Posted: Tue Feb 27, 2024 9:17 am
	toxa wrote Sorry, i don't get your question. When compiling ZGB project for the game gear, it is not 2bpp anymore. You put in 4bpp assets, recompile and here we go. Or just load the other palette if you want to keep the original assets. Yes, I was wondering if one could have the game with the original 2bpp assets mapped to a different palette, to retain the style of a GB game. No worries.

segarule Joined: 23 Jan 2010 Posts: 439	Posted: Tue Feb 27, 2024 9:59 am
segarule Joined: 23 Jan 2010 Posts: 439	toxa wrote as you can see, spritesheets are in PNG format and look this way. they might be redrawn in 16 colors, put into the platform-specific subfoldres and recompile. also game should set that palette in the code of course. You mean that i can take the assets and give to it colors of my choice with 16 colors pallete?

kusfo Joined: 29 Mar 2012 Posts: 886 Location: Spain	Posted: Tue Feb 27, 2024 10:38 am
kusfo Joined: 29 Mar 2012 Posts: 886 Location: Spain	segarule wrote toxa wrote as you can see, spritesheets are in PNG format and look this way. they might be redrawn in 16 colors, put into the platform-specific subfoldres and recompile. also game should set that palette in the code of course. You mean that i can take the assets and give to it colors of my choice with 16 colors pallete? yes, you can. Are you going to have a look? (So then I'll skip)

segarule Joined: 23 Jan 2010 Posts: 439	Posted: Tue Feb 27, 2024 10:47 am
segarule Joined: 23 Jan 2010 Posts: 439	kusfo wrote segarule wrote toxa wrote as you can see, spritesheets are in PNG format and look this way. they might be redrawn in 16 colors, put into the platform-specific subfoldres and recompile. also game should set that palette in the code of course. You mean that i can take the assets and give to it colors of my choice with 16 colors pallete? yes, you can. Are you going to have a look? (So then I'll skip) No. When i put the question is to know if anyone can redraw the colors. "I" not mean me in particular but anyone. You can continue helping toxa.

kusfo Joined: 29 Mar 2012 Posts: 886 Location: Spain	Posted: Tue Feb 27, 2024 10:51 am
kusfo Joined: 29 Mar 2012 Posts: 886 Location: Spain	I mean, I'm not a very good artist, but I can do something acceptable

toxa Joined: 09 Aug 2021 Posts: 131	Posted: Tue Feb 27, 2024 1:22 pm Last edited by toxa on Tue Feb 27, 2024 1:29 pm; edited 1 time in total
toxa Joined: 09 Aug 2021 Posts: 131	sverx wrote Yes, I was wondering if one could have the game with the original 2bpp assets mapped to a different palette, to retain the style of a GB game.No worries. that is a simple as calling set_bkg_palette()/set_sprite_palette() somewhere in the beginning of game state initialization callback(s). before this line, for instance: https://github.com/untoxa/SushiNights/blob/master/src/StateSplashZGB.c#L15

toxa Joined: 09 Aug 2021 Posts: 131	Posted: Tue Feb 27, 2024 1:24 pm
toxa Joined: 09 Aug 2021 Posts: 131	kusfo wrote and what about the fixed screens? (game over, etc) situation is a bit different, but in general should work similar way. working on that on the ZGB side.

toxa Joined: 09 Aug 2021 Posts: 131	Posted: Tue Feb 27, 2024 1:28 pm
toxa Joined: 09 Aug 2021 Posts: 131	Sushi Nights update. As said before, colorizing is just putting the platform specific assets. image.png (15.94 KB) screenshot SushiNights.zip (28.31 KB) ROM file

toxa Joined: 09 Aug 2021 Posts: 131	Posted: Wed Mar 06, 2024 6:41 pm
toxa Joined: 09 Aug 2021 Posts: 131	now with the VGM sound effects! automatically converted from the VGM files of the game assets. SushiNights.zip (29.51 KB) ROM file

toxa Joined: 09 Aug 2021 Posts: 131	Super Princess 2092 Exodus Posted: Fri Mar 15, 2024 9:09 am
toxa Joined: 09 Aug 2021 Posts: 131	Another ZGB game ported to the Game Gear: Super Princess 2092 Exodus. Missing SFX, music and final credit text. Also colorful assets. image.png (23.61 KB) menu screen image2.png (22.29 KB) Level title image3.png (30.01 KB) In-game screen GBJAM2016.zip (28.3 KB) ROM file

toxa Joined: 09 Aug 2021 Posts: 131	ZGB binary releases Posted: Sat Mar 23, 2024 10:37 am
toxa Joined: 09 Aug 2021 Posts: 131	ZGB library github repo now has CI builds of the ZGB library for the most popular operating systems: windows, linux, macos. You can download them here: https://github.com/untoxa/ZGB/actions/workflows/zgb_build_and_package.yml under the "ZGB Build and Package" link (you must be logged on to github to see the build artifacts. Those builds contain the ZGB library, all necessary tools built for the selected platform, project template, docs, and also bundled matching GBDK-2020 release for convenience. All you need is GNU Make (plus mingw/msys or the modern WSL for windows) and python3 for some few python tools in the ZGB toolchain. Then you just set a couple of environment variables: GBDK_HOME and ZGB_PATH and you are ready! Also the latest version integrates support for the furnace music modules with the help of the wonderful driver written by Joe Kennedy: https://www.smspower.org/forums/20045-BanjoSMSMusicAndSfxDriverUsingFurnace github: https://github.com/joffb/banjo Example projects may be seen in this topic above. Hope you like it. Looking forward for your new homebrew projects. splash_zgb.png (1.53 KB) ZGB logo

kusfo Joined: 29 Mar 2012 Posts: 886 Location: Spain	Posted: Mon Mar 25, 2024 7:11 am
kusfo Joined: 29 Mar 2012 Posts: 886 Location: Spain	Great! We may port the old ChainBreak that @ManuSegura did for the GB some time ago! :-D

toxa Joined: 09 Aug 2021 Posts: 131	Posted: Mon Mar 25, 2024 7:49 am
toxa Joined: 09 Aug 2021 Posts: 131	It is not necessary to port anything game boy. I mean ZGB is not just for porting the game boy games or projects. You can make whatever new ORIGINAL games. More to say, ZGB/GBDK-2020 is better and more convenient game making library, than any other existing for the SMS/GG.

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