Making a 68x68 Grid...

Questions & Answers
1

Hello, I need to make a grid for a rts game im making. It’s going to be used in the making of the buildings. And what i’m going to do is basically draw a 68x68 grid and then i can select them by clicking on them and then i can hit the create button and it will place the selected building. But my problem is i can create a 1x68 grid but i don’t know how to create the rest. If i put it in a for loop then it will only create a 1x1 grid and then crash as far as i know xD
My code is:

var Prefab : Transform;
var forValueX : float;

var XPos : float;
var YPos : float;
var ZPos : float;
function Start(){
XPos = 1.829174;
YPos = -105.606;
ZPos = 1.927386;

for (forValueX = 0; forValueX <= 68; forValueX++) {
Debug.Log("Value of X is: " + forValueX);
Instantiate(Prefab, new Vector3(XPos,YPos,ZPos), Quaternion.identity);
XPos += 1.829174;
XPos  += 1.8;
}


}
function Update()
{

}

If you can see the problem i’m encountering and can help me then thanks so much!! :smiley:

2

All of this code is untested.

Rect[,] grid = new Rect[68,68];
float rectSize = 1.0f;
//68 can be replaced by the length of the

//This will initalize a grid of rectangles which you 
//can use to "hittest" towards
void Start()
{

    for(int y = 0; y < grid.getLength(1); y++)
    {

       for(int x = 0; x < grid.getLength(0); x++)
       {

          grid[x,y] = new Rect(x * rectSize, y * rectSize, rectSize, rectSize);
        
       }

    }

}

void Update()
{

    //You need to spawn a plane with a size similar to your grid which also fits
    //Inside your fully sized grid
    //And use that plane to get the click position if the mouse button is clicked.
    if(Input.GetMouseButtonDown(0))
    {

        //Cast a ray from the camera to the "grid plane", store the ray result
        //In a RaycastHit
        //Get the "mouse position" from the RaycastHit.point

        Vector2 mpos = new Vector2(
                    someRaycastHit.point.x, 
                    someRaycastHit.point.z
                    );

        Rect slot = GetClickedRect(mpos);
        //Spawn whatever building or such in the center of the rectangle here

        Debug.Log(slot);

    }

}

Rect GetClickedRect(Vector2 pos)
{

    foreach(Rect r in grid)
    {

        if(r.Contains(pos))
        {

            return r;//found slot skip the rest of the foreach loop

        }

    }
    //If the code ever gets here the click was out of bounds
    return null;

}