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SIDWAVE
Account closed
Registered: Apr 2002
Posts: 2238 |
Converting to sprites
Ok, so i have run into a problem.. hehe
I have 52 bmp pics, which are each the size of 2x2 C64 sprites.
So there's room for them all in 1 VIC bank..
Now problem is to convert them..
I tried Gang-Ed, but it only imports bmp as hires/mcol bitmap/char, and blows up the small image to fullscreen!
So i saved all the frames as a koala pr pic.. hahaha
Now i am stuck with 52 koala pics, that need to be transformed into 4 sprites each, bwahaha..
This is really silly..
What i really need is:
1) convert the 48x48 pixel bmp to 4 colors
2) convert this to 4 sprites
Is there an editor, where i can load bmp/gif into a sprite editor ? they have correct size, just need to be fixed to 4 cols.. which i can do with a batchconvert in thumbs plus (reduce nr of colors)
??
Thanks for any help! |
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Magnar
Registered: Aug 2009
Posts: 60 |
Got it to work by using lots of "for" statements.
However, the coloring is totally wrong. I would expect the LoadPicture with the list of added color values to be a search pattern through the GIF file and then arrange the multicolor byte in return according the order of the color array input.
Say, in the GIF; if I have $ff0000 as background, and I specify bgcolor=$ff0000 as first value, I would expect it to come into the sprite as the first value.
Now, it isn't and also it doesnt take all colors into consideration either. I lose the 3rd color in the convert process somehow.. Anyone? :)
Source:
.macro LoadSpriteFromPicture( filename, bgcolor, color0, color1, color2 ) {
.var picture = LoadPicture( filename, List().add(bgcolor, color0, color1, color2 ) )
.for (var y = 0; y <21; y++){
.for (var x = 0; x <3; x++){
.byte picture.getMulticolorByte(x,y)
}
}
.for (var y = 0; y <21; y++){
.for (var x = 3; x <6; x++){
.byte picture.getMulticolorByte(x,y)
}
}
.for (var y = 22; y <42; y++){
.for (var x = 0; x <3; x++){
.byte picture.getMulticolorByte(x,y)
}
}
.for (var y = 22; y <42; y++){
.for (var x = 3; x <6; x++){
.byte picture.getMulticolorByte(x,y)
}
}
.for (var y = 42; y <63; y++){
.for (var x = 0; x <3; x++){
.byte picture.getMulticolorByte(x,y)
}
}
.for (var y = 42; y <63; y++){
.for (var x = 3; x <6; x++){
.byte picture.getMulticolorByte(x,y)
}
} |
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Burglar
Registered: Dec 2004
Posts: 1047 |
argh yes, what cruzer said ;) (serves me right by using a too large png that wouldnt give errors anyway, doh facepalm)
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Cruzer
Registered: Dec 2001
Posts: 1048 |
Finally someone listens :D |
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Magnar
Registered: Aug 2009
Posts: 60 |
Guys, now you are both my heroes! :) I'll put down some serious greetz and credits to both of you for helping! THX!
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spider-j
Registered: Oct 2004
Posts: 449 |
Mh, this looks all too complicated for me. Should be easy to put this into two lines in a shell (or cmd if you are on windows).
1. Crop sprites from source bmp with ImageMagick
2. convert with bmp2sprite |
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Bitbreaker
Registered: Oct 2002
Posts: 501 |
Gimp can export .spr as well. Also, somehow i don't get it why to introduce tools implemented as assembler-specific macros. A tool for all that is written in any language with a few lines of code in case. In my youth i drew sprites on quad paper and added the pixel values by mental arithmetic. Don't be such pussies and IDE-users :-) |
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Magnar
Registered: Aug 2009
Posts: 60 |
Quote: Gimp can export .spr as well. Also, somehow i don't get it why to introduce tools implemented as assembler-specific macros. A tool for all that is written in any language with a few lines of code in case. In my youth i drew sprites on quad paper and added the pixel values by mental arithmetic. Don't be such pussies and IDE-users :-)
First of all, thanks a lot to Burglar and Cruzer for nice and precise answers to the convert question I raised here in the "C64 Coding" forum.
As response to, "Also, somehow I don't get it why to introduce tools implemented as assembler-specific macros".
To me, just a few rows of code in Kickasm for converting GIFs to sprites was the most easy and spot on solution.
I know a little about programming languages, but I dont know a lot or all languages or how to operate tools others written in various operation systems (linux/windows), programming languages (java, c++, Python, Pearl etc) in order to tweak them to work in specific ways. Therefore, I am extremely grateful for the responses I got drilled down to something I can at least on a half-decent level understand and finally operate with results as success. :)
However, we all work in mysterious and different ways, which means that something that works for me might not work for you.
Peace! |
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Cruzer
Registered: Dec 2001
Posts: 1048 |
You're welcome, Magnar! About the "you're doing it wrong" discussion...
What I like about using an asm script:
- It's easy to change if your gfx needs to be located in some non-standard way that a tool doesn't support.
- It's easy to update the gfx. Just draw on the PNG and the gfx will be imported the next time you assemble the code.
- No need to install a tool for every purpose
What I don't like:
- Slow for heavy tasks
- Language is too simple for complex tasks
So for heavy/complex tasks I'm now using a Java plugin for KickAss. But yeah, the more ways of accomplishing something, the better I guess.
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Burglar
Registered: Dec 2004
Posts: 1047 |
you're welcome magnar ;)
for me its pretty much the same as Cruzer. my Makefile has proper dependencies setup, so that I can just edit a png (or whatever) and run make.
and that's all I need to do to build a new d64, zero other steps required. and that speeds up my development process considerably.
but yes, using kickass to convert graphics on the fly is pretty slow (4-5 sec for a full bitmap pic), but since it only needs to do it once per picture it's fine really.
@spider, everybody should use what they like most and fits their needs. there is no 1 solution that is best in all cases.
but in magnar's case he'd have to copy/paste/save/convert 78 (3*2*13) times and then link the result, every time the graphics is updated. sounds like a mind-numbing chore to me ;) |
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chatGPZ
Registered: Dec 2001
Posts: 11146 |
"It's easy to update the gfx. Just draw on the PNG and the gfx will be imported the next time you assemble the code."
reading things like that scares me - ever heard of makefiles? /o\ |
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