How to Pass Matrix into "Function"

I'm making a TI-BASIC game, where the player can move around 2-D maps on the home screen. I make an 8x16 matrix for each map:

    [[1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1]
     [1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1]
     [1,0,1,0,1,0,0,0,0,0,0,0,0,0,0,1]
     [1,0,1,0,1,1,1,1,1,1,1,1,1,1,0,1]
     [1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,1]
     [1,0,1,1,1,1,1,1,1,1,1,1,1,1,0,1]
     [1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1]
     [1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1]]

...and this "function" to display it:

    For(A,1,8)
    For(B,1,16)
    Output(A,B,sub(" I",[A](C,D)+1,1))
    End:End

Now, I have multiple maps (matrices) and need to "call" that function with a different matrix without re-typing that code every time. Is there a way to do this?

Solution

It is possible to pass an argument to a method using the Ans variable. Here is an example (with prgmDISPLAY based on your given display function):

prgmDISPLAY
For(A,1,8
For(B,1,16
Output(A,B,sub(" I",Ans(C,D)+1,1
End
End

You would then call this method by calling prgmDISPLAY from the main program, like so:

[[1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1][1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1][1,0,1,0,1,0,0,0,0,0,0,0,0,0,0,1][1,0,1,0,1,1,1,1,1,1,1,1,1,1,0,1][1,0,1,0,0,0,0,0,0,0,0,0,0,0,0,1][1,0,1,1,1,1,1,1,1,1,1,1,1,1,0,1][1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1][1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1
prgmDISPLAY

Or, if the matrix is stored in [A], simply do:

[A]
prgmDISPLAY