data to a class and back....??

If your array is global, you shouldn''t need another pointer to it. I think if you declare it using extern int MapArray[100][100]; in every file that needs to use it, it should work.

I supose you''re using C++, aren''t you? You should be able to acces your array from any method (or class member function) without further ado:

int MapArray[100][100];
class unit {...};

int unit::read_map(int x, int y) {
return MapArray[x][y];
}

No need for pointers as far as I can see.
The only problem you might encounter is that if you define your methods (s.a.) in another file you will have to write something like this:

extern int MapArray[100][100];

into it (just in case you aren''t familiar with C++ variable scopes).

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"To a computer, chaos is just another kind of order."

Seems cnirrad was quicker than I was :-)

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"To a computer, chaos is just another kind of order."