how do ATTR and SCREENS work?

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how do ATTR and SCREENS work?

Post by Crayon21 »

I've tried to get collision detection to work but I'm not having any success. How do ATTR and SCREENS work?
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dr beep
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Re: how do ATTR and SCREENS work?

Post by dr beep »

The short answer: RTFM

The polite answer:
ATTR(Y,X) returns the setting of the colours on that field.
So when your last printed character there is a different INK or PAPER then you will get that in return with something like LET A=ATTR(Y,X)

SCREEN$(Y,X) can return the printed character there but only when that character is part of the characterset, so UDG will normally not work.
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