Problems getting kinematic bodies working

[hardy ivy]

I have two squares with Box Collider 2D components connected to them. When I add a dynamic Rigidbody 2D to the upper one it has no problems with the collision but when i change it into Kinematic and add this little script:

using UnityEngine;

public class Test : MonoBehaviour
{
    void FixedUpdate()
    {
        Rigidbody2D rb = GetComponent<Rigidbody2D>();
        rb.MovePosition(rb.position + new Vector2(0, -1f) * Time.fixedDeltaTime);
    }
}

it does not want to collide with the second square. If i change the body type back to Dynamic and lock the Z rotation it it works fine again but it feels like that is not the right way to do this.

[fast spoke]

a collider without a rigidbody is a static collider; it will not move
a kinematic collider is a collider that will not react to collisions by itself

so this seems like expected behaviour?

also related, interaction between collider types:
https://docs.unity3d.com/6000.2/Documentation/Manual/collider-types-interaction.html

I cannot find a similar page in the 2d physics documentation, but I expect this applies to 2d as well

[vast nova]

feels like that is not the right way to do this
What is the "this" you're trying to do?

[hardy ivy]

I want to make a top down player that can't walk into walls

So is a kinematic body attached to the player what i want to use here?

[vast nova]

No. Dynamic rigidbody with locked Z rotation is correct

[hardy ivy]

Ah ok