Unity 場景切換以及 Data 共享

這一篇文章主要是想分享 Unity的場景切換，那切換到不同的場景，要怎麼樣使用上一個場景所帶來的資料。

SongSelect Scene

按下Start按鈕開始，要把資料帶到下一個遊戲頁面。

MusicData.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
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[CreateAssetMenu(fileName = "MusicData", menuName = "Rhythm/MusicData")]
public class MusicData : ScriptableObject
{
    public string musicName;
    public string author;
    public AudioClip audioClip;
    public Sprite coverImage;
    public int bpm;
    public float length;
}

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

[CreateAssetMenu(fileName = "MusicData", menuName = "Rhythm/MusicData")]
public class MusicData : ScriptableObject
{
    public string musicName;
    public string author;
    public AudioClip audioClip;
    public Sprite coverImage;
    public int bpm;
    public float length;
}

SongDetailUI.cs

using UnityEngine;
using UnityEngine.UI;
using UnityEngine.SceneManagement;
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public class SongDetailUI : MonoBehaviour
{
    public Image coverImage;
    public TMPro.TextMeshProUGUI titleText;
    public TMPro.TextMeshProUGUI artistText;
    public TMPro.TextMeshProUGUI infoText;
    private MusicData current;
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    public void ShowMusic(MusicData music)
    {
        current = music;
        // 將音樂資料帶入右邊的detail UI
        coverImage.sprite = music.coverImage;
        titleText.text = music.musicName;
        artistText.text = music.author;
        infoText.text = $"BPM: {music.bpm}  Length: {music.length}";
    }
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    public void Btn_Play() {
        if (current == null) {
            Debug.LogError("沒有選擇歌曲，無法開始遊戲");
            return;
        }
        // 將音樂存到GameData
        GameData.selectedMusic = current;
        SceneManager.LoadScene("GameScene");
    }
}

using UnityEngine;
using UnityEngine.UI;
using UnityEngine.SceneManagement;

public class SongDetailUI : MonoBehaviour
{
    public Image coverImage;
    public TMPro.TextMeshProUGUI titleText;
    public TMPro.TextMeshProUGUI artistText;
    public TMPro.TextMeshProUGUI infoText;
    private MusicData current;

    public void ShowMusic(MusicData music)
    {
        current = music;
        // 將音樂資料帶入右邊的detail UI
        coverImage.sprite = music.coverImage;
        titleText.text = music.musicName;
        artistText.text = music.author;
        infoText.text = $"BPM: {music.bpm}  Length: {music.length}";
    }

    public void Btn_Play() {
        if (current == null) {
            Debug.LogError("沒有選擇歌曲，無法開始遊戲");
            return;
        }
        // 將音樂存到GameData
        GameData.selectedMusic = current;
        SceneManager.LoadScene("GameScene");
    }
}

Button 觸發轉場

在Start按鈕定義的事件

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public void Btn_Play() {
    if (current == null) {
        Debug.LogError("沒有選擇歌曲，無法開始遊戲");
        return;
    }
    // 將音樂存到GameData
    GameData.selectedMusic = current;
    SceneManager.LoadScene("GameScene");
}

public void Btn_Play() {
    if (current == null) {
        Debug.LogError("沒有選擇歌曲，無法開始遊戲");
        return;
    }
    // 將音樂存到GameData
    GameData.selectedMusic = current;
    SceneManager.LoadScene("GameScene");
}

在另外一個遊戲場景，已經可以聽到點擊的對應的資料音樂。

透過 MusicData music = GameData.selectedMusic; 抓取剛剛的音樂。

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
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public class GameMusicPlayer : MonoBehaviour
{
    private void Start() {
        MusicData music = GameData.selectedMusic;
        if (music == null) {
            Debug.LogError("沒有選擇歌曲，無法開始遊戲");
            return;
        }
        // 抓到全域的AudioSource
        AudioSource audio = GetComponent<AudioSource>();
        audio.clip = music.audioClip;
        audio.Play();
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        Debug.Log("開始播放：" + music.musicName);
    }
}

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

public class GameMusicPlayer : MonoBehaviour
{
    private void Start() {
        MusicData music = GameData.selectedMusic;
        if (music == null) {
            Debug.LogError("沒有選擇歌曲，無法開始遊戲");
            return;
        }
        // 抓到全域的AudioSource
        AudioSource audio = GetComponent<AudioSource>();
        audio.clip = music.audioClip;
        audio.Play();

        Debug.Log("開始播放：" + music.musicName);
    }
}