unity官方美女講解的場景加載demo

分爲兩種方法,一種用碰撞器解決,一種用距離判斷。地下城與迷宮等使用碰撞比較好,而外面的開放世界可以使用距離判斷


using UnityEngine;
using UnityEngine.SceneManagement;

public class LoadPartOfScene : MonoBehaviour
{
    
    public enum CheckLoadPartOfMethod
    {
        UseDistance,
        UseTrigger
    }
    public Transform player;
    public CheckLoadPartOfMethod method;
    public float distanceOfRange;

    public bool isLoaded;
    private bool shouldLoad;


    void Start()
    {
        if (SceneManager.sceneCount > 0)
        {
            for (int i = 0; i < SceneManager.sceneCount; i++)
            {
                Scene scene = SceneManager.GetSceneAt(i);
                if(scene.name == gameObject.name)
                {
                    isLoaded = true;
                }
            }
        }
    }

    // Update is called once per frame
    void Update()
    {
        if(method == CheckLoadPartOfMethod.UseDistance)
        {
            CheckDistanceOfPart();
        }
        else if(method == CheckLoadPartOfMethod.UseTrigger){
            CheckTriggerOfPart();
        }
    }

    void CheckDistanceOfPart()
    {
        if (Vector3.Distance(player.position, transform.position) < distanceOfRange)
        {
            LoadParts();
        }
        else
        {
            UnLoadParts();
        }
    }

    void CheckTriggerOfPart()
    {
        if (shouldLoad)
        {
            LoadParts();
        }
        else
        {
            UnLoadParts();
        }
    }

    private void LoadParts()
    {
        if (!isLoaded)
        {
            SceneManager.LoadSceneAsync(gameObject.name, LoadSceneMode.Additive);
        }
        isLoaded = true;
    }

    private void UnLoadParts()
    {
        if (isLoaded)
        {
            SceneManager.UnloadSceneAsync(gameObject.name);
        }
        isLoaded = false;
    }

    private void OnTriggerEnter(Collider other)
    {
        if (other.CompareTag("Player"))
        {
            shouldLoad = true;
        }
    }

    private void OnTriggerExit(Collider other)
    {
        if (other.CompareTag("Player"))
        {
            shouldLoad = false;
        }
    }
}
場景中不同部分的設計都是有碰撞器的預作

源碼在https://github.com/amel-unity

 

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