Unity只序列化MonoBehaviours的字段（不是get或set的属性）。除非有[System.NonSerialized]属性，否则所有公共字段都被序列化。
不要与[HideInInspector]属性混淆，它在检查器中不可见（如果您没有自定义检查器），但将被序列化。

class Foo
{
    // Bar won't be shown in the inspector or serialized.
    [System.NonSerialized]
    public int Bar = 5;
}

若要序列化非公共字段，请对基元类型（如int、float、bool）使用[SerializeField]属性。

public class SomePerson : MonoBehaviour
{
    // This field gets serialized because it is public.
    public string name = "John";

    // This field does not get serialized because it is private.
    private int age = 40;

    // This field gets serialized even though it is private
    // because it has the SerializeField attribute applied.
    [SerializeField]
    private bool isMale = true;
}

如果要序列化自己的类或结构，请使用[System.Serializable]属性。

[System.Serializable]
public struct PlayerStats
{
    public int level;
    public int health;
}