ColliderCast and IsTouching Help

Hey everyone.

I'm currently having issues with my units getting stuck inside each other. The way it's currently working is that I'm using a collider cast to check if I'm moving into a unit, and if so, don't move any more.

Code (CSharp):

1.  
2.         if (!ColliderCast(physicalCollider, Movement, settings.UnitColliderFilter, out RaycastHit2D hit, 0.5f))
3.         {
4.             body.MovePosition(body.position + Movement * Time.fixedDeltaTime);
5.         }

And this is the ColliderCast function:

Code (CSharp):

1.     public bool ColliderCast(Collider2D collider, Vector2 direction, ContactFilter2D filter, out RaycastHit2D hit, float length = 0.2f)
2.     {
3.         int numHits = collider.Cast(direction.normalized, filter, colliderCastHits, length);
4.         CircleCollider2D myCol = collider as CircleCollider2D;
5.  
6.         IMDraw.WireSphere3D((Vector2)transform.position + myCol.offset + (direction.normalized * length), myCol.radius, Color.white);
7.  
8.         for (int i = 0; i < numHits; i++)
9.         {
10.             hit = colliderCastHits[i];
11.  
12.             if (!hit.collider.isTrigger)
13.             {
14.                 //Collision
15.                 Debug.Log("Colliding with " + hit.collider.transform.root.name, hit.collider);
16.                 Debug.Log("Is overlapping " + myCol.IsTouching(hit.collider));
17.  
18.                 return true;
19.             }
20.         }
21.  
22.         //No collision
23.         hit = new RaycastHit2D();
24.         return false;
25.     }

Here's a gif showcasing the problem:

https://i.imgur.com/GDuGUMM.gif

As you can see, the two green colliders are stuck inside each other. The white colliders are where I'm ColliderCasting to. This is where I'm confused, since it doesn't seem to overlap.

I read on the docs (https://docs.unity3d.com/ScriptReference/Collider2D.Cast.html) that if you use collider.Cast() with colliders already inside each other from the start of the cast, it will count as a hit. So I thought I could use collider.IsTouching() to determine when colliders are overlapping from the start, but that simply returns false. What am I doing wrong here?

Thanks in advance.

 

Hey, thanks for the quick reply.

So, I tried adding all your suggestions like so:

Code (CSharp):

1.  
2.         if (!ColliderCast(physicalCollider, Movement * Time.fixedDeltaTime, settings.UnitColliderFilter, out RaycastHit2D hit))
3.         {
4.             body.MovePosition(body.position + Movement * Time.fixedDeltaTime);
5.         }
6.  

Code (CSharp):

1.  
2.     public bool ColliderCast(Collider2D collider, Vector2 direction, ContactFilter2D filter, out RaycastHit2D hit)
3.     {
4.         int numHits = collider.Cast(direction, filter, colliderCastHits, direction.magnitude);
5.         CircleCollider2D myCol = collider as CircleCollider2D;
6.  
7.         IMDraw.WireSphere3D((Vector2)myCol.transform.position + myCol.offset + direction, myCol.radius, Color.white);
8.  
9.         for (int i = 0; i < numHits; i++)
10.         {
11.             //Collision
12.             Debug.Log("Colliding with " + hit.collider.transform.root.name, hit.collider);
13.             Debug.Log("Is overlapping " + myCol.IsTouching(hit.collider));
14.  
15.             Debug.DrawLine((Vector2)myCol.transform.position + myCol.offset, hit.collider.transform.position);
16.  
17.             return true;
18.         }
19.  
20.         //No collision
21.         hit = new RaycastHit2D();
22.         return false;
23.     }

But they still get stuck inside each other for some reason:
https://i.imgur.com/VQzoa4P.gif

EDIT: Actually nevermind.. I got it to work now.
Looks like I had some layers setup wrong in the Phyics2D Collision Matrix, causing them to not collide with each other to begin with. Sorry!

Thanks for the help though.