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EX_BOUNC.OPL
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Text File
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1992-08-27
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584b
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26 lines
PROC bounce:
LOCAL posX%,posY%,changeX%,changeY%,k%
LOCAL scrx%,scry%
scrx%=40 :scry%=9
posX%=1 :posY%=1
changeX%=1 :changeY%=1
DO
posX%=posX%+changeX%
posY%=posY%+changeY%
IF posX%=1 OR posX%=scrx%
changeX%=-changeX%
REM at edge ball changes direction
BEEP 2, 600 REM low beep
ENDIF
IF posY%=1 or posY%=scry% REM same for y
changeY%=-changeY%
BEEP 2, 200 REM high beep
ENDIF
AT posX%,posY% :PRINT "0";
PAUSE 2 REM Try changing this
AT posX%,posY% :PRINT " ";
REM removes old `0' character
k%=KEY
UNTIL k%
ENDP