[comp.sys.handhelds] HP48 gravity game refinement

mike@drd.com (Mike Rovak) (06/29/91)

To prevent pixels from bunching up at the top or left line of the screen
when absolute pixel coordinates go negative, modify variable DRAWXY to
test for this like so:

%%HP: T(3)A(D)F(.);
\<<
    IF XM 0 < YM 0 <
OR NOT
    THEN XM R\->B YM
R\->B 2 \->LIST PIXON
    END
\>>

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     mike@DRD.Com  
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