❔ unity footstep sound sys

Collider coll;
    public PhysicMaterial grass;
public PlayerSoundSys sounds;

    void Start()
    {
        coll = GetComponent<Collider>();
    }

    private void OnCollisionStay(Collision collision)
    {
        if(coll.sharedMaterial == grass)
        {
            sounds.FootStepSoundPlayGrass();
        }
    }