Selecting every Collider2D in a Scene (codewise)

Hello,

I am working on a directional teleporting feature and am currently stuck on a problem.
Because I am working on a grid I had the Idea of a Vector3 checking every tile until it hits a wall.
I wrote a method that actually worked but only if I specify the Collider the the Method is looking for.
So now I am stuck and maybe there is a way to combine every Collider2D on the Scene into one big Collider.
I know there are Arrays that I could use to handle that but no matter how hard I tried it ended up not working.
It would be very nice to tell me other possibilitys ore just suggest things that might work.

Here is the Code that actually worked (for one Collider)

Code (CSharp):

1.  
2. //Returns the amount of steps the Player has to do to reach the next wall
3.     float stepsUntilColliderR()
4.     {
5.         int i = 0;
6.         Vector3 checkPoint = gameObject.transform.position;
7. //IsInside() returns a bool that is true, if given Vector3 is inside given Collider
8.         while(!IsInside(wallCollider,checkPoint))
9.         {
10.             checkPoint = new Vector3(checkPoint.x + 1, checkPoint.y);
11.             i++;
12.         }
13.      
14.         return i-1;
15.     }
16.  

 

what are you doing in your IsInside function? You can do raycasts or collision checks against an entire object layer rather than a single collider.

 

Code (CSharp):

1.  public static bool IsInside(Collider2D c, Vector3 point)
2.     {
3.         Vector3 closest = c.ClosestPoint(point);
4.        
5.         return closest == point;
6.     }
7.  

A raycast would not be optimal because I have to count steps and just want to check if a certain point is inside an obsticle. I found a solution with Arrays but I hav no clue how or why it works. Checking Collision with certain layers sounds interesting tho.