I tried pretty hard to adapt this to my code but I couldn't do it.
I wound up having to follow my original idea which was to take the previous
controller state and bit merge it with the current controller state side by
side, and scan through a table of pre-merged data and X > 3 then it's
turning right, else left. So I've still got a table plus some overhead
shifting and merging bits and juggling registers in the process.
So while my current code is definitely an improvement over the previous
one, but I'd obviously like to try to use the stuff below but I just can't
wrap my brain around the bitwise logic.
At 11:45 AM 10/30/2001 +0100, Thomas wrote:
lda SWCHA
tay
eor last ; 01 or 10 (else: abrupt twist)
sty last
dey ; -> y = -1..2
cpy #2
sbc #1 ; -> a = -1, 0, 1
beq .right
.left:
Glenn Saunders - Producer - Cyberpunks Entertainment
Personal homepage: http://www.geocities.com/Hollywood/1698
Cyberpunks Entertainment: http://cyberpunks.uni.cc
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