How do I create a grid-based interface using arrays?

I'd like to create a grid-based game so that the structure looks like this:

[attachment=0:3lhgxw9s][/attachment:3lhgxw9s]

So say you have columns labeled as A-D and rows labeled as 1-4. And the user selects something in A3 which gets destroyed. I want to be able to replace the object in A3 now with some other object. Would I do this using an array? Is this considered a 2D array or something else?

Thanks for any help you can provide on this.

You don't necessarily need the array, you can create the grid with a loop and store the (x,y) index of each tile as instance variables. I made the grid quickly for you as an example.

https://dl.dropboxusercontent.com/u/139 ... 4grid.capx

Imagine that each white square of your grid was an object. And it was stored ina 2d array.. A3 would be index (0,2), just replace the object in there

Thanks for the capx, — On a slightly unrelated note, I have yet to update my v163 of C2--do you recommend just downloading the latest full version (v165?) and replacing my current version? Is there an update option that I don't see in C2?

Thanks also caiorosisca, I'll start reading up more on 2D arrays as well.