对 Unity 开发人员最有用的代码片段

Unity流行的游戏开发平台使开发者能够跨各种平台创建身临其境的互动体验。高效的编码实践可以显着提高生产力并简化开发流程。以下是每个 Unity 开发人员工具箱中都应该有的一些不可或缺的代码片段：

1. 单例模式实现

public class Singleton<T> : MonoBehaviour where T : MonoBehaviour
{
    private static T _instance;

    public static T Instance
    {
        get
        {
            if (_instance == null)
            {
                _instance = FindObjectOfType<T>();
                if (_instance == null)
                {
                    GameObject singletonObject = new GameObject();
                    _instance = singletonObject.AddComponent<T>();
                    singletonObject.name = typeof(T).ToString() + " (Singleton)";
                }
            }
            return _instance;
        }
    }

    protected virtual void Awake()
    {
        if (_instance == null)
        {
            _instance = this as T;
            DontDestroyOnLoad(gameObject);
        }
        else
        {
            Destroy(gameObject);
        }
    }
}

2. 用于性能优化的对象池

public class ObjectPool : MonoBehaviour
{
    public GameObject prefab;
    public int poolSize = 10;
    private Queue<GameObject> objectPool = new Queue<GameObject>();

    private void Start()
    {
        for (int i = 0; i < poolSize; i++)
        {
            GameObject obj = Instantiate(prefab);
            obj.SetActive(false);
            objectPool.Enqueue(obj);
        }
    }

    public GameObject GetObjectFromPool()
    {
        if (objectPool.Count > 0)
        {
            GameObject obj = objectPool.Dequeue();
            obj.SetActive(true);
            return obj;
        }
        else
        {
            GameObject obj = Instantiate(prefab);
            return obj;
        }
    }

    public void ReturnObjectToPool(GameObject obj)
    {
        obj.SetActive(false);
        objectPool.Enqueue(obj);
    }
}

3. 平滑的相机跟随脚本

public class SmoothCameraFollow : MonoBehaviour
{
    public Transform target;
    public float smoothSpeed = 0.125f;
    public Vector3 offset;

    private void LateUpdate()
    {
        if (target != null)
        {
            Vector3 desiredPosition = target.position + offset;
            Vector3 smoothedPosition = Vector3.Lerp(transform.position, desiredPosition, smoothSpeed);
            transform.position = smoothedPosition;

            transform.LookAt(target);
        }
    }
}

4. 延迟动作协程

public IEnumerator DelayedAction(float delay, Action action)
{
    yield return new WaitForSeconds(delay);
    action.Invoke();
}

5. 使用事件系统处理输入

public class InputManager : MonoBehaviour
{
    public static event Action<Vector2> OnMoveInput;
    public static event Action OnJumpInput;

    private void Update()
    {
        float horizontal = Input.GetAxis("Horizontal");
        float vertical = Input.GetAxis("Vertical");

        if (OnMoveInput != null)
            OnMoveInput(new Vector2(horizontal, vertical));

        if (Input.GetButtonDown("Jump"))
        {
            if (OnJumpInput != null)
                OnJumpInput();
        }
    }
}

结论

这些代码片段涵盖了 Unity 游戏开发中常用的一系列基本功能。通过利用这些片段，开发人员可以加快工作流程、优化性能并高效构建强大、功能丰富的游戏。无论您是初学者还是经验丰富的开发人员，拥有有用的代码片段库对于有效应对各种开发挑战都是非常宝贵的。快乐编码！