LoadPalette

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LoadPalette
by Edgyr on 2009-06-22 (#48170)
Hi, I have some difficulties to load a palette correctly.

I'm using a FF1 black mage to learn how to load ressources. And If, in my sprite I have two 8x8 tiles that use different sub-palette, I load both like that :

Code:
set $2006 $3F
set $2006 $10

//Sub-palette 01
set $2007 $0E
set $2007 $00
set $2007 $17
set $2007 $22

//Sub-palette 02
set $2007 $0E
set $2007 $22
set $2007 $21
set $2007 $00


Using Bob Rost's tools, I've prepare a 4-colors .CHR file and I load it in bank 2. But the only colors used in my NES file are of the first sub-palette.

My question : Do I have to load the colors every time prior to draw a tile that use a different set of colors? Or they're is a way to load a 32 colors palette one time at boot?

(obviously, you can see that I'm not an english speaker, and I'm sorry if you had some difficulties in reading me)

by tepples on 2009-06-22 (#48171)
You need to specify which palette to use for each block of 16x16 pixels in the attribute table. Right now, all attribute entries are probably 0 (as opposed to 1, 2, or 3), so the tiles show up in the first (as opposed to second, third, or fourth) set of colors.


EDIT: Oops, I misread it. Edgyr was talking about the sprite palette.

by Edgyr on 2009-06-22 (#48172)
I've change my code from

Code:
set $2004 24
set $2004 9
set $2004 %00000000
set $2004 8


To

Code:
set $2004 24
set $2004 9
set $2004 %00000001
set $2004 8


and my sprite used palette #1 insteed of #0... exactly like you said.
Tyvm, Tepples.

by Edgyr on 2009-06-23 (#48200)
Oh? Is there another palette other than sprite/bg palette?

by tepples on 2009-06-23 (#48201)
No, but I didn't see the $10 and (incorrectly) assumed the background palette. The background attribute table has tended to be one of the hardest things for NES newbies to get their heads around.