Re: A85: FIND_PIXEL
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Re: A85: FIND_PIXEL
Now i remember, in the code for FIND_PIXEL (in the ROM) it has it's
own "ld a,63 / sub c " already in it. So when using PutSprite, it
actually flips the y coordinates twice. My mistake.
-mike pearce
On Wed, 20 Aug 1997 09:35:28 -0700, you wrote:
>PutSprite has to do that because it calls FIND_PIXEL when it starts
>out. Try writing $FF to $FC00. You'll see that it is in the top left
>corner. I think the programmers were drunk or something when they wrote
>the FIND_PIXEL routine. <j/k> Actually, I think they wrote it like they
>did because that is the "correct" way to do it, and it is easier to do
>graphing calculations if you don't have to flip over the coordinate
>system.
>
References: