visionOS Move Bug

I was making a gesture to let the goose (character) walk, but I had two problems.

1: I added collision and physical body components to the goose and the collided entity, but I found that those physical formations could not completely block the way of the goose. For example, a tree is in front of it. After the goose is blocked, it will cross the tree or run to the top of the tree as long as it is a little faster.

2: Because the knowledge I have accumulated is not very complete, I can control the movement of the goose on the z-axis. I hope that the user's gestures can be realized by dragging back and forth (z-axis), but I can only realize the user's gestures by dragging up and down (y-axis). I hope you can give me some guidance:

GooseOriginalPosition.z + Float(translation.height / 10000)

This is the complete code:

    @State var goose: Entity?
    @State var isDraggingGoose = false
    @State var gooseOriginalPosition = SIMD3<Float>(repeating: 0)

        RealityView { content in
            if let model = try? await Entity(named: "WorldScene", in: realityKitContentBundle) {
                content.add(model)
            }
            
            if let gooseEntity = try? await Entity(named: "Goose", in: realityKitContentBundle) {
                gooseEntity.scale = SIMD3<Float>(repeating: 0.3)
                content.add(gooseEntity)
                goose = gooseEntity
            }
        }
        .simultaneousGesture(DragGesture()
            .targetedToAnyEntity()
            .onChanged { value in
                handleDrag(value)
            }
            .onEnded { _ in
                isDraggingGoose = false
                gooseTimer?.invalidate()
            })

    func handleDrag(_ value: EntityTargetValue<DragGesture.Value>) {
        guard let goose = goose else { return }
        
        if !isDraggingGoose {
            isDraggingGoose = true
            gooseOriginalPosition = goose.position(relativeTo: nil)
        }
        
        let translation = value.gestureValue.translation
        let newPosition = SIMD3<Float>(
            gooseOriginalPosition.x + Float(translation.width / 10000),
            gooseOriginalPosition.y,
            gooseOriginalPosition.z + Float(translation.height / 10000)//I hope the gesture here should be z-axis drag.
        )
        
        goose.setPosition(newPosition, relativeTo: nil)
    }