Bug CastRay returning unexpected results given Collision Filter

I'm attempting to create a turret selection system.
A ray is cast from the player camera to mouse position.

The ray is set up with the following filter;

Code (CSharp):

1. var rayInput = new RaycastInput()
2.         {
3.             Start = start,
4.             End = end,
5.             Filter = new CollisionFilter
6.             {
7.                 BelongsTo = 4u,
8.                 CollidesWith = 1u
9.             }
10.         };

These are the existing collision layers.


These are the collision filters of a turret. Collides with has 0, 3 and 4 ticked.


Collision filter of terrain pieces. Collides with has 0, 1, 2 and 3 ticked.



I'm expecting the raycast to only collide with Turrets, at which point I add a selected component. Otherwise, I remove all selected components.
However, the selecting system is effectively working backwards, only adding components to terrain pieces and ignoring the turret.

This code returns true.

Code (CSharp):

1. Debug.Log(CollisionFilter.IsCollisionEnabled(rayInput.Filter, new CollisionFilter { BelongsTo = 1, CollidesWith = 4 }));
2.        

This code returns false.

Code (CSharp):

1.  
2.         Debug.Log(CollisionFilter.IsCollisionEnabled(rayInput.Filter, new CollisionFilter { BelongsTo = 1, CollidesWith = 4 }));

Am I missing something obvious?

 

Your filter matches "0: Terrain."

These are bit masks and my mental crutch here is is "1 << 0", which equals 1.

I think they should really change the labeling on these groups. The whole system is a bit janky and I never got the CategoryNames scriptable object thingy work.

In other words, your "1: Turret" category is actually equal to 2u, so you are picking against the "0: Terrain" category, which is 1u.

 

use PhysicsCategoryTags,look like that :

Code (CSharp):

1.             _collisionFilter = new CollisionFilter
2.             {
3.                 BelongsTo = new PhysicsCategoryTags
4.                 {
5.                     Category04 = true
6.                 }.Value,
7.  
8.                 CollidesWith = new PhysicsCategoryTags
9.                 {
10.                     Category01 = true
11.                 }.Value,
12.             };