当Player与具有特定标签的对象碰撞时，Unity3D播放声音

我使用Unity 2019.2.14f1创建一个简单的3D游戏。

在该游戏中，我想在播放器与带有特定标签的gameObject碰撞时播放声音。

MainCamera有一个音频侦听器，我在ThridPersonController内的头像上使用Cinemachine Free Look（我使用的是Standard Assets附带的那个-但我隐藏了Ethan并添加了自己的角色/头像）。

带有我要销毁标签的gameObject具有音频源：

为了使声音在碰撞时播放，我首先创建了一个空的gameObject作为AudioManager，然后向其中添加了一个新组件（C＃脚本）：

using UnityEngine.Audio;
using System;
using UnityEngine;

public class AudioManager : MonoBehaviour
{

    public Sound[] sounds;

    // Start is called before the first frame update
    void Awake()
    {
        foreach (Sound s in sounds)
        {
            s.source = gameObject.AddComponent<AudioSource>();
            s.source.clip = s.clip;

            s.source.volume = s.volume;
            s.source.pitch = s.pitch;
        }
    }

    // Update is called once per frame
    public void Play (string name)
    {
        Sound s = Array.Find(sounds, sound => sound.name == name);
        s.source.Play();
    }
}

并创建了脚本Sound.cs：

using UnityEngine.Audio;
using UnityEngine;

[System.Serializable]
public class Sound
{
    public string name;

    public AudioClip clip;

    [Range(0f, 1f)]
    public float volume;
    [Range(.1f, 3f)]
    public float pitch;

    [HideInInspector]
    public AudioSource source;
}

之后，在Unity UI中，我进入了GameObject AudioManager中的Inspector，并在我命名的脚本中添加了一个新元素：CatchingPresent。

在“第三人称角色”脚本上，为了在与游戏对象碰撞时销毁游戏对象（具有特定标签），我添加了以下内容：

void OnCollisionEnter(Collision other)
        {
            if (other.gameObject.CompareTag("Present"))
            {
                Destroy(other.gameObject);
                count = count - 1;
                SetCountText();

            }
        }

由于该特定对象在碰撞时消失，因此它可以正常工作。现在，为了在播放器与带有标签的对象碰撞时随时播放声音“ CatchingPresent”，在这种情况下Present，我尝试将以下内容添加到if中OnCollisionEnter：

• FindObjectOfType<AudioManager>().Play("CatchingPresent");

但是我得到了错误：

The type or namespace name 'AudioManager' could not be found (are you missing a using directive or an assembly reference?)

• AudioManager.instance.Play("CatchingPresent");

But I get the error:

The name 'AudioManager' does not exist in the current context

As all the compiler errors need to be fixed before entering the Playmode, any guidance on how to make the sound playing after a collision between the player and the gameObject with the tag Present is appreciated.

Edit 1: Assuming that it is helpful, here it goes the full ThirdPersonUserControl.cs:

using System;
using UnityEngine;
using UnityEngine.UI;
using UnityStandardAssets.CrossPlatformInput;

namespace UnityStandardAssets.Characters.ThirdPerson
{
    [RequireComponent(typeof (ThirdPersonCharacter))]
    public class ThirdPersonUserControl : MonoBehaviour
    {

        public Text countText;
        public Text winText;

        private int count;
        private ThirdPersonCharacter m_Character; // A reference to the ThirdPersonCharacter on the object
        private Transform m_Cam;                  // A reference to the main camera in the scenes transform
        private Vector3 m_CamForward;             // The current forward direction of the camera
        private Vector3 m_Move;
        private bool m_Jump;                      // the world-relative desired move direction, calculated from the camForward and user input.


        private void Start()
        {

            count = 20;
            SetCountText();
            winText.text = "";

            // get the transform of the main camera
            if (Camera.main != null)
            {
                m_Cam = Camera.main.transform;
            }
            else
            {
                Debug.LogWarning(
                    "Warning: no main camera found. Third person character needs a Camera tagged \"MainCamera\", for camera-relative controls.", gameObject);
                // we use self-relative controls in this case, which probably isn't what the user wants, but hey, we warned them!
            }

            // get the third person character ( this should never be null due to require component )
            m_Character = GetComponent<ThirdPersonCharacter>();
        }


        private void Update()
        {
            if (!m_Jump)
            {
                m_Jump = CrossPlatformInputManager.GetButtonDown("Jump");
            }
        }


        // Fixed update is called in sync with physics
        private void FixedUpdate()
        {
            // read inputs
            float h = CrossPlatformInputManager.GetAxis("Horizontal");
            float v = CrossPlatformInputManager.GetAxis("Vertical");
            bool crouch = Input.GetKey(KeyCode.C);

            // calculate move direction to pass to character
            if (m_Cam != null)
            {
                // calculate camera relative direction to move:
                m_CamForward = Vector3.Scale(m_Cam.forward, new Vector3(1, 0, 1)).normalized;
                m_Move = v*m_CamForward + h*m_Cam.right;
            }
            else
            {
                // we use world-relative directions in the case of no main camera
                m_Move = v*Vector3.forward + h*Vector3.right;
            }
#if !MOBILE_INPUT
            // walk speed multiplier
            if (Input.GetKey(KeyCode.LeftShift)) m_Move *= 0.5f;
#endif

            // pass all parameters to the character control script
            m_Character.Move(m_Move, crouch, m_Jump);
            m_Jump = false;
        }

        void OnCollisionEnter(Collision other)
        {
            if (other.gameObject.CompareTag("Present"))
            {
                Destroy(other.gameObject);
                count = count - 1;
                SetCountText();

                //FindObjectOfType<AudioManager>().Play("CatchingPresent");
                AudioManager.instance.Play("CatchingPresent");
            }
        }

        void SetCountText()
        {
            countText.text = "Missing: " + count.ToString();
            if (count == 0)
            {
                winText.text = "You saved Christmas!";
            }
        }
    }
}

Edit 2: Hierarchy in Unity: