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2009-07-02 04:33

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!

... 56 posts hidden. Click here to view all posts....

2013-01-22 16:07

Magnar

Registered: Aug 2009
Posts: 60

@Burglar, still not working. Now I am using a GIF file with 48x63 pixels, 4 colors.

Gives error:
flex pass 1
.for (var ysprite = 0; ysprite < ysize; ysprite++) {
.for (var xsprite = 0; xsprite < xsize; xsprite++) {
.for (var i = 0; i < [3 * 21]; i++) {
.byte picture.getMulticolorByte(
^

Error: byte x coordinate out of range : 6

Sourcecode:

.var bgcolor= $000000
.var color0 = $ffffff
.var color1 = $696259
.var color2 = $000000
.var xsize = 48
.var ysize = 63

.pc = $3000 "Sprite Data"
spriteData:

:LoadSpriteFromPicture("C:\anna_1.gif",xsize,ysize,bgcolor,color0,color1,color2 )
:LoadSpriteFromPicture("C:\anna_2.gif",xsize,ysize,bgcolor,color0,color1,color2 )

.macro LoadSpriteFromPicture( filename,
xsize, ysize,
bgcolor, color0, color1, color2 ) {
.var picture = LoadPicture( filename, List().add(bgcolor, color0, color1, color2) )
.for (var ysprite = 0; ysprite < ysize; ysprite++) {
.for (var xsprite = 0; xsprite < xsize; xsprite++) {
.for (var i = 0; i < [3 * 21]; i++) {
.byte picture.getMulticolorByte(
[[xsprite * 3] + mod(i,21)],
[[ysprite * 21] + floor(i / 3)]
)
}
.byte 0
}
}
}

2013-01-22 16:17

Burglar

Registered: Dec 2004
Posts: 1031

.var xsize = 2
.var ysize = 3

xsize/ysize is in sprites, not pixels.

2013-01-22 18:50

Magnar

Registered: Aug 2009
Posts: 60

Unfortunately same error even after changing the xsize and ysize values.

2013-01-22 18:53

Cruzer

Registered: Dec 2001
Posts: 1048

Give my previous comment a chance :)

2013-01-22 20:03

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)
}
}

2013-01-22 21:19

Burglar

Registered: Dec 2004
Posts: 1031

argh yes, what cruzer said ;) (serves me right by using a too large png that wouldnt give errors anyway, doh facepalm)

2013-01-22 22:06

Cruzer

Registered: Dec 2001
Posts: 1048

Finally someone listens :D

2013-01-22 22:28

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!

2013-01-23 06:37

spider-j

Registered: Oct 2004
Posts: 445

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

2013-01-23 08:16

Bitbreaker

Registered: Oct 2002
Posts: 500

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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