Blend Tree

using UnityEngine;

public class BlendTreeDriver : MonoBehaviour
{
  Animator anim;
  Rigidbody rb;

  static readonly int VelXHash = Animator.StringToHash("VelocityX");
  static readonly int VelZHash = Animator.StringToHash("VelocityZ");
  static readonly int SpeedHash = Animator.StringToHash("Speed");

  void Awake()
  {
      anim = GetComponent<Animator>();
      rb   = GetComponent<Rigidbody>();
  }

  void Update()
  {
      // World velocity → character local space
      Vector3 localVel = transform.InverseTransformDirection(rb.velocity);

      // 0.1s damping so the blend does not jump
      const float damp = 0.1f;
      anim.SetFloat(VelXHash,  localVel.x, damp, Time.deltaTime);
      anim.SetFloat(VelZHash,  localVel.z, damp, Time.deltaTime);
      anim.SetFloat(SpeedHash, localVel.magnitude, damp, Time.deltaTime);
  }
}

using UnityEngine;

public class BlendTreeReader : MonoBehaviour
{
  Animator anim;

  void Awake() => anim = GetComponent<Animator>();

  // List clips currently blending and their weights
  void Update()
  {
      AnimatorClipInfo[] clips = anim.GetCurrentAnimatorClipInfo(0);

      foreach (var info in clips)
      {
          Debug.Log($"{info.clip.name}: {info.weight:F2}");
      }

      // Dominant clip (weight > 0.5) → pick a footstep volume
      string dominant = "Idle";
      float maxW = 0f;
      foreach (var info in clips)
      {
          if (info.weight > maxW)
          {
              maxW = info.weight;
              dominant = info.clip.name;
          }
      }

      float footVol = dominant.Contains("Run") ? 1f :
                      dominant.Contains("Walk") ? 0.6f : 0f;
  }
}