SNAKE

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SNAKE

TI-83 question:

I was wondering how programs register and remember the location the line the
"snake" has created in a snake-type game. How does the calculator know that
the head hits its body? Is there a command that says something like: "If X=23
and Y=14 and L=1:disp "you lost!"   "  In which "L" is a black pixel and X and
Y are coordinates.. Any feedback or an explination would be wonderful. Thanks
in advance.

~Bas Hegge
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