Hi Thomas!
>>Once again more coding advice is needed.
>Or no subroutines at all, and just a big mess of code,
Hey, that's where I come from! ;-)
Well, until now I managed to merge the general and the
joystick movement into one block, plus I generalized it
even more, so that it may be executed for all objects.
For the moment that works ;-)
I just hoped, that maybe there was some better general
approach to the problem...
Oh, BTW: Here's a very cool snippet I recently coded:
Assuming you want to either add or subtract some values,
like some enemy movement. You'd probably do +-2 or +-3
or something like that to your x/y positions.
Assuming you'd like to merge both of these values into
one single byte.
Assuming you'd have it like this:
FREEX110 for add 3
FREEX111 for sub 3
Then here is the snippet:
LDA xymov,X
LSR ; Will save one LSR later...
TAY
AND #$07
BCS .MoveLeft
ADC xpos,X ; Carry is clear! Fine!
JMP .HorMoveDone
.MoveLeft
EOR #$FF ; Carry is set! Excellent!
ADC xpos,X
.HorMoveDone
STA xpos,X
;-)
Greetings,
Manuel
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