GP32 Mod Files In Mr Mirko's Sdk

[Bacon]

I'm not quite sure this is the right forum to ask this question, but it is development related.

I've been learning C in my spare time for some months, and a few days ago I thought it was time to start applying what little knowledge I have so far to making a small prog on the GP32.

I'm using Mr Mirko's excellent SDK, and so far I've come along nicely, with a double buffered display and a couple of sprites moving about.

The thing I want to know if there is any mod tracker for Linux that allows me to make mod files compatible with the modfile library in the SDK. I tried making a short piece in Soundtracker and convert the resulting file with raw2c, but it crashed the program when I ran it on my GP32.

Do I have to hunt down a copy of Protracker and fire up an Amiga to make the music or is there any way to manke the music in Linux? Sure, I could use an existing mod file, but where's the fun in that? B)

 

[mr.mirko]

I'm not quite sure this is the right forum to ask this question, but it is development related.

I've been learning C in my spare time for some months, and a few days ago I thought it was time to start applying what little knowledge I have so far to making a small prog on the GP32.

I'm using Mr Mirko's excellent SDK, and so far I've come along nicely, with a double buffered display and a couple of sprites moving about.

The thing I want to know if there is any mod tracker for Linux that allows me to make mod files compatible with the modfile library in the SDK. I tried making a short piece in Soundtracker and convert the resulting file with raw2c, but it crashed the program when I ran it on my GP32.

Do I have to hunt down a copy of Protracker and fire up an Amiga to make the music or is there any way to manke the music in Linux? Sure, I could use an existing mod file, but where's the fun in that? B)

​

I bet you saved in the wrong FIle Format, the modplayer in the sdk can play all MOD Files, 4 Channel.

There are dozen of Tracker Formats, s3m, ST, xm,... Be shure to save in the right Format, MOD4Channel.

 

[Bacon]

I bet you saved in the wrong FIle Format, the modplayer in the sdk can play all MOD Files, 4 Channel.

There are dozen of Tracker Formats, s3m, ST, xm,... Be shure to save in the right Format, MOD4Channel.

I couldn't find any way to specify the mod format in Soundtracker. The only choices are "Save song", "Save module" and "Render wav". When I choose "Save mod" I don't get to choose the file format. I made sure to make a song with only 4 channels.

Btw, I love your SDK! With the help of the book I've been using to learn C (Programming in C by Stephen G. Kochan) and your code examples, I was able to get double buffering and sprites working in a few hours. Not bad in my view since the only C programs I've made before are the small exercises in the book

 

[mr.mirko]

I bet you saved in the wrong FIle Format, the modplayer in the sdk can play all MOD Files, 4 Channel.

There are dozen of Tracker Formats, s3m, ST, xm,... Be shure to save in the right Format, MOD4Channel.

I couldn't find any way to specify the mod format in Soundtracker. The only choices are "Save song", "Save module" and "Render wav". When I choose "Save mod" I don't get to choose the file format. I made sure to make a song with only 4 channels.

Btw, I love your SDK! With the help of the book I've been using to learn C (Programming in C by Stephen G. Kochan) and your code examples, I was able to get double buffering and sprites working in a few hours. Not bad in my view since the only C programs I've made before are the small exercises in the book

​

Thanx that you like it...
Starting in C is not so hard, only if it comes to pointer and registers, or double linked lists, it could damage your brain

 

[don]

I did my tunes with soundtracker as well, but - as you mentioned - it isn't able to save 4 channel MODs. So I had to go the hard way and use dosbox with the good old FT2 to convert it to .mod...

 

[WolverineDK]

I did my tunes with soundtracker as well, but - as you mentioned - it isn't able to save 4 channel MODs. So I had to go the hard way and use dosbox with the good old FT2 to convert it to .mod...

​

Hmmm talking about great trackers, if you have a pc then here is a link to a great help in trackers for linux and windows

The Mod archive

MilkyTracker home — oldschool.voodoofrog.com

 

[Bacon]

I did my tunes with soundtracker as well, but - as you mentioned - it isn't able to save 4 channel MODs. So I had to go the hard way and use dosbox with the good old FT2 to convert it to .mod...

​

Time to fire up dosbox then. Or perhaps an Amiga. Could be fun too.

 

[mek]

Just tried some tunes, and it seems like the ones using the tone portamento effect (3xx in col4) crash my gp32.
Maybe other effects are a problem too, but i don't have the time to test them all.

edit:
After adding some sprites, all mods seems to crash :unsure:
I'm sure i made some stupid mistake as i'm a nood coder.

 

[trooper]

Modplug Tracker and OctaMED SoundStudio for windows are two very good tracker programs for creating and converting .MOD files in various formats and channel arrangements.

Trooper

 

[Blah]

Mirkos SDK is a good place to start, but to be honest, I believe the blitting code and modmixer are an example at best. Try SDL sometime, you'll like it.

www.libsdl.org
http://sourceforge.net/projects/sdl-gp32

And also, Modplug tracker is a good program but be careful not to use its advanced features like more than 4 samples, and the effects. Otherwise it won't work.

 

[mek]

Finaly got it working

Don't use convert or raw2c etc.
Just use the "Load MOD music from SMC" example from PEA's site.

http://www.gp32.co.nz/snippet_view.php?snippet_id=4

 

[pea]

Tip: If you copy/paste the 'Forum link' you will get a nice link like this
snippet: unknown author - Load MOD music from SMC

It could be an alignment problem. I've had many problems with raw data included in my application - sometimes adding new data (like sprite data) causes the program to crash in certain places, or even changing the order of the various data. It was alignment issues.

I now use a very simple ASM file to include all files (no need to convert them to c OR load them from disk) like this:

resources.S

	.ALIGN 4
	.ARM

	.GLOBAL  rsrc_ship
	.GLOBAL  rsrc_red
	.GLOBAL  rsrc_green
	.GLOBAL  rsrc_blue
	.GLOBAL  rsrc_splot
	.GLOBAL  rsrc_bullet
	.GLOBAL  rsrc_bonus
	.GLOBAL  rsrc_warp
	.GLOBAL  rsrc_title
	.GLOBAL  rsrc_font1

rsrc_ship:
	.INCBIN "resources/ship.png"

	.ALIGN 4
rsrc_red:
	.INCBIN "resources/red.png"
	
	.ALIGN 4	
rsrc_green:
	.INCBIN "resources/green.png"

	.ALIGN 4	
rsrc_blue:
	.INCBIN "resources/blue.png"
	
	.ALIGN 4
rsrc_splot:
	.INCBIN "resources/splot.gif"
	
	.ALIGN 4
rsrc_bullet:
	.INCBIN "resources/bullet.gif"
	
	.ALIGN 4
rsrc_bonus:
	.INCBIN "resources/bonus.png"
	
	.ALIGN 4
rsrc_warp:
	.INCBIN "resources/displace.png"
	
	.ALIGN 4
rsrc_title:
	.INCBIN "resources/title.gif"
	
	.ALIGN 4
rsrc_font1:
	.INCBIN "resources/dungeon.gdf"

NOTE: Every line that starts with a dot is tabbed in. The files are in a resource subfolder during compile time.

Use the resources in code like this:

extern unsigned char rsrc_bullet[] __attribute__ ((aligned (4)));

I may have gone a little overboard on the 'aligned' directives, but it fixed my problem i.e - I don't think you need it above, as it is already aligned in the S file.

 

[mek]

pea: thx for helping me out.
your .s solution looks and works very nicely.

 

[pea]

No problem. It's not my solution originally - some other helpful person on these forums postred it some while back - but it works very well.