[Unity3D] シーンの切り替え・フェードイン/アウト

1, ヒエラルキーにPotalを作成し、RigidbodyとBoxColliderを作成する。各チェックとサイズを調整し、Prefabにする。

2, PotalPrefabのLayer→IgnoreRaycastにする

3, SceneManagementフォルダを作成しPotal.csを作成し、下記スクリプトを書く

Portal

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;

namespace RPG.SceneManagement
{
    public class Potal : MonoBehaviour
    {
        [SerializeField] int sceneToLoad = -1;

        private void OnTriggerEnter(Collider other)
        {
            if (other.tag == "Player")
            {
                SceneManager.LoadScene(sceneToLoad);
            }
        }
    }
}

4, PortalにPortal.csをアタッチし、SceneToLoadを1に設定する

5, BuildSettingでSceneを設定する

別シーンから戻る

1,下記コードを追加する

Potal

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;

namespace RPG.SceneManagement
{
    public class Potal : MonoBehaviour
    {
        [SerializeField] int sceneToLoad = -1;

        private void OnTriggerEnter(Collider other)
        {
            if (other.tag == "Player")
            {
                StartCoroutine(Transition());
            }
        }

        private IEnumerator Transition()
        {
            DontDestroyOnLoad(gameObject);
            yield return SceneManager.LoadSceneAsync(sceneToLoad);
            Debug.Log("Scene Loaded");
            Destroy(gameObject);
        }
    }
}

SpawnPointの作成

1, Potalオブジェクト内にSpawnPointを作成する

2, SpawnPointを動かし、位置を決める

3, 下記コードを追加する

Portal

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;
using UnityEngine.AI; // 追加

namespace RPG.SceneManagement
{
    public class Portal : MonoBehaviour
    {
        [SerializeField] int sceneToLoad = -1;
        [SerializeField] Transform spawnPoint;  //追加

        private void OnTriggerEnter(Collider other)
        {
            if (other.tag == "Player")
            {
                StartCoroutine(Transition());
            }
        }

        private IEnumerator Transition()
        {
            DontDestroyOnLoad(gameObject);
            yield return SceneManager.LoadSceneAsync(sceneToLoad);

            Portal otherPortal = GetOtherPortal();    //追加
            UpdatePlayer(otherPortal);  //追加

            Destroy(gameObject);
        }

        //追加
        private void UpdatePlayer(Portal otherPortal)
        {
            GameObject player = GameObject.FindWithTag("Player");
            player.GetComponent<NavMeshAgent>().Warp(otherPortal.spawnPoint.position);
            player.transform.rotation = otherPortal.spawnPoint.rotation;
        }

        //追加
        private Portal GetOtherPortal()
        {
            foreach (Portal portal in FindObjectsOfType<Portal>())
            {
                if (portal == this) continue;

                return portal;
            }

            return null;
        }
    }
}

4, PotalのPotalスクリプトにSpawnPointを設定する

5, SpawnPotalを回転させてplayerの向きを決める

6, PlayerのNavMeshAgentを外す

複数のSpawnpointの切り替え

1, 下記コメント部のコードを追加

Portal

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;
using UnityEngine.AI;

namespace RPG.SceneManagement
{
    public class Portal : MonoBehaviour
    {
        //追加
        enum DestinationIdentifier
        {
            A, B, C, D, E
        }

        [SerializeField] int sceneToLoad = -1;
        [SerializeField] Transform spawnPoint;
        [SerializeField] DestinationIdentifier destination; //追加

        private void OnTriggerEnter(Collider other)
        {
            if (other.tag == "Player")
            {
                StartCoroutine(Transition());
            }
        }

        private IEnumerator Transition()
        {
            //追加
            if (sceneToLoad < 0)
            {
                Debug.LogError("Scene to load not set.");
                yield break;
            }

            DontDestroyOnLoad(gameObject);
            yield return SceneManager.LoadSceneAsync(sceneToLoad);

            Portal otherPortal = GetOtherPortal();
            UpdatePlayer(otherPortal);
            Destroy(gameObject);
        }


        private void UpdatePlayer(Portal otherPortal)
        {
            GameObject player = GameObject.FindWithTag("Player");
            player.GetComponent<NavMeshAgent>().Warp(otherPortal.spawnPoint.position);
            player.transform.rotation = otherPortal.spawnPoint.rotation;
            //player.transform.position = otherPortal.spawnPoint.position;
        }

        private Portal GetOtherPortal()
        {
            foreach (Portal portal in FindObjectsOfType<Portal>())
            {
                if (portal == this) continue;
                if (portal.destination != destination) continue;

                return portal;
            }
            return null;
        }
    }
}

2, Portalを作成し、Destinationのアルファベットを合わせる

フェードアウトの作成

1, ヒエラルキーにUI→Canvasを作成する

2, Faderに名前を変更し、CanvasGroupコンポーネントをつける

3, imageコンポーネントをつける

4, Fader.csを作成し、下記スクリプトを書く

Fader

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

namespace RPG.SceneManagement
{
    public class Fader : MonoBehaviour
    {
        CanvasGroup canvasGroup;

        private void Start()
        {
            canvasGroup = GetComponent<CanvasGroup>();

            StartCoroutine(FadeOutIn());
        }

        IEnumerator FadeOutIn()
        {
            yield return FadeOut(3f);
            Debug.Log("Fade out");
            yield return FadeIn(1f);
            Debug.Log("Fade in");
        }

        public IEnumerator FadeOut(float time)
        {
            while (canvasGroup.alpha < 1)
            {
                canvasGroup.alpha += Time.deltaTime / time;
                yield return null;
            }
        }

        public IEnumerator FadeIn(float time)
        {
            while (canvasGroup.alpha > 0)
            {
                canvasGroup.alpha -= Time.deltaTime / time;
                yield return null;
            }
        }
    }
}

5, Faderスクリプトをアタッチする

6,CoreとFaderをPrefabにする

7, Scene2にCorePrefabから新しく作成する

8, PersistentObjectを作成し、Faderを子オブジェクトにしてからPrefabにする

9,PersistentObjectSpawner.csを作成し、Coreにアタッチする

10, 各スクリプトにコードを書く

PersistentObjectSpawner

using System;
using UnityEngine;

namespace RPG.Core
{
    public class PersistentObjectSpawner : MonoBehaviour
    {
        [SerializeField] GameObject persistentObjectPrefab;

        static bool hasSpawned = false;

        private void Awake()
        {
            if (hasSpawned) return;

            SpawnPersistentObjects();

            hasSpawned = true;
        }

        private void SpawnPersistentObjects()
        {
            GameObject persistentObject = Instantiate(persistentObjectPrefab);
            DontDestroyOnLoad(persistentObject);
        }
    }
}

Fader

using System.Collections;
using UnityEngine;
namespace RPG.SceneManagement
{
    public class Fader : MonoBehaviour
    {
        CanvasGroup canvasGroup;

        private void Start()
        {
            canvasGroup = GetComponent<CanvasGroup>();
        }

        public IEnumerator FadeOut(float time)
        {
            while (canvasGroup.alpha < 1)
            {
                canvasGroup.alpha += Time.deltaTime / time;
                yield return null;
            }
        }
        public IEnumerator FadeIn(float time)
        {
            while (canvasGroup.alpha > 0)
            {
                canvasGroup.alpha -= Time.deltaTime / time;
                yield return null;
            }
        }
    }
}

Portal

using System;
using System.Collections;
using UnityEngine;
using UnityEngine.AI;
using UnityEngine.SceneManagement;
namespace RPG.SceneManagement
{
    public class Portal : MonoBehaviour
    {
        enum DestinationIdentifier
        {
            A, B, C, D, E
        }
        [SerializeField] int sceneToLoad = -1;
        [SerializeField] Transform spawnPoint;
        [SerializeField] DestinationIdentifier destination;
        [SerializeField] float fadeOutTime = 1f;
        [SerializeField] float fadeInTime = 2f;
        [SerializeField] float fadeWaitTime = 0.5f;

        //private void Start()
        //{
        //    transform.parent = null;
        //    DontDestroyOnLoad(gameObject);
        //}

        private void OnTriggerEnter(Collider other)
        {
            if (other.tag == "Player")
            {
                StartCoroutine(Transition());
            }
        }
        private IEnumerator Transition()
        {
            if (sceneToLoad < 0)
            {
                Debug.LogError("Scene to load not set.");
                yield break;
            }

            transform.parent = null;
            DontDestroyOnLoad(gameObject);

            Fader fader = FindObjectOfType<Fader>();

            yield return fader.FadeOut(fadeOutTime);
            yield return SceneManager.LoadSceneAsync(sceneToLoad);

            Portal otherPortal = GetOtherPortal();
            UpdatePlayer(otherPortal);

            yield return new WaitForSeconds(fadeWaitTime);
            yield return fader.FadeIn(fadeInTime);

            Destroy(gameObject);
        }

        private void UpdatePlayer(Portal otherPortal)
        {
            GameObject player = GameObject.FindWithTag("Player");
            player.GetComponent<NavMeshAgent>().Warp(otherPortal.spawnPoint.position);
            player.transform.rotation = otherPortal.spawnPoint.rotation;
        }
        private Portal GetOtherPortal()
        {
            foreach (Portal portal in FindObjectsOfType<Portal>())
            {
                if (portal == this) continue;
                if (portal.destination != destination) continue;
                return portal;
            }
            return null;
        }
    }
}