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privateなフィールドをインスペクタに表示する

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Unityはコンポーネントのpublicなフィールドをインスペクタに表示してくれます。
しかし「設計的にはprivateにしたい。だけれどインスペクタで値を調整したい」という場面があります。
(フィールドはあまりpublicにしたくないものですし...)

そんな時は[SerializeField]属性を使います。
インスペクタに表示したいフィールドに[SerializeField]属性を指定すると表示されるようになります。

またクラスの場合は、クラスの定義に[System.Serializable]属性を指定すると、インスペクタに表示されるようになります(クラスのフィールドに[SerializeField]属性を指定する必要もあり)。

Hoge.cs
using UnityEngine;
using System.Collections;

public class Hoge : MonoBehaviour
{
    [SerializeField]
    float parameter;

    [SerializeField]
    Piyo piyo;

    [System.Serializable]
    class Piyo
    {
        [SerializeField]
        float param;
    }   
}

inspector.png

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