Random Forkbomb-like instantiating?

Unity Engine
,
1

I have a “grid” setup for a 2d game I’m making, and I would like to create the map almost like a forkbomb:

Say there’s a tile, and 1-3 of positions left, top, right, and/or bottom instantiate a new floor tile, and from each tile, it continues this same idea from the new set of positions. ex: first places tile left and top of 1st tile, left instantiates tile bottom and left, and right of 1st instantiates a tile top.

I know how to do once from a tile, but not continue it automatically with constantly varying x/y coordinates.

Thanks!

My code:

void rooms () {

        taken [1,1] = true;
        tilePlace ();

        foreach (int nW in mapW) {            //instantiate floor at all taken
            foreach (int nH in mapH) {
                if (taken [nW, nH] == true) {
                    Instantiate (mapTile, new Vector2 (nW - (0.2f * nW), nH - (0.2f * nH)), Quaternion.identity);
                }
            }
        }
        foreach (int nW in mapW) {            //instantiate wall at all not taken
            foreach (int nH in mapH) {
                if (taken [nW, nH] == false) {
                    Instantiate (wall, new Vector2 (nW - (0.2f * nW), nH - (0.2f * nH)), Quaternion.identity);
                }
            }
        }


    }

    void tilePlace(){
       
        int placements = Random.Range (1, 4);    // # of placements around tile

        for (int i = 0; i < placements; i++) {
           
            int place = Random.Range (1, 4);    // random place to instantiate

            if (place == 1) {
                taken [1,2] = true;                // 1,2 are coordinates to place
            }
            if (place == 2) {
                taken [2,1] = true;
            }
            if (place == 3) {
                taken [1,0] = true;
            }
            if (place == 4) {
                taken [0,1] = true;
            }
        }
    }
2

If you can do it once, you just collect the new positions just created, and do the same thing, I would think. I can’t quite picture what you are doing. So basically you have a new position array, which gets filled, then you send that array through the loop, so you make the function take an array as an argument, at the end it deletes the old array, and sends the new array recursively back into the function.