# Math in Unity : Grid and Bitwise Operations (Part I)

After some articles about C#, we back to Unity.
Today we will talk about bit operations within a simple grid. When creating a grid in Unity, using arrays is often the first solution that comes to mind. And it’s perfectly fine.
Let’s keep it easy, so the “size” will be the same for x and y, so our grid will be a square.

To start we create a reference for our prefab (I simply use a cube with the y scale at 0.3f).

We need a size for the size of the grid (I used an 8 but feel free to choose the one you prefer).

So let’s create a GameObject array to fill our grid.

Now, in Start () we initialize the _grid array with a size of 64, or _size * _size

Then we set the nested loop to create the grid

I set up a very simple scene

The Camera Flag of the Main Camera is set to Solid Color (i use a blue) and it’s position is this

Now, if we press Play

We have our own 8 * 8 grid.

Now let’s move on to the next step: if we set the tag of each cell like this (we need to create a tag for our Cube and call it Tile)

then add this line of code
tile.name = tile.tag + “_” + _row + “_” + _column;

Each cell created will have its tag “Tile” and x and y as position in the grid

We have cell go from 0, 0 to 7, 7
Really simple.

In the next section we see how to set and what are the possible operations with bits.

Always in love with programming, even if late (I'm already 39 years old) I decided to follow my dream! We will see how far my passion will take me!

## More from Matteo Lo Piccolo

Always in love with programming, even if late (I'm already 39 years old) I decided to follow my dream! We will see how far my passion will take me!