【Unity3d】ScriptableObject的简单用法

 

ScriptableObject非常适合小数量的游戏数值。

使用ScriptableObject的时候需要注意，生成ScriptableObject数据文件需要自己写Editor代码实现。

大概的工作流程是：写一个ScriptableObject（继承ScriptableObject的类，相当于数据模板） → 使用自己写的Editor代码生成一个实现该模板的数据文件 → Inspector面板中编辑数据。

给出我的Editor代码：

using UnityEngine;
using System.IO;
using System.Collections;
using UnityEditor;

public class Scriptablity : MonoBehaviour {

	public static T Create<T> ( string _path, string _name) where T : ScriptableObject {

		if ( new DirectoryInfo(_path).Exists == false ) {
            Debug.LogError ( "can't create asset, path not found" );
            return null;
        }
        if ( string.IsNullOrEmpty(_name) ) {
            Debug.LogError ( "can't create asset, the name is empty" );
            return null;
        }
        string assetPath = Path.Combine( _path, _name + ".asset" );

        T newT = ScriptableObject.CreateInstance<T>();
        AssetDatabase.CreateAsset(newT, assetPath);
        Selection.activeObject = newT;
        return newT;
    }

	public static void  Create<T>() where T : ScriptableObject {

		string assetName = "New " + typeof(T).Name;
		string assetPath = "Assets";
		if(Selection.activeObject) {
			assetPath = AssetDatabase.GetAssetPath(Selection.activeObject);
			if (Path.GetExtension(assetPath) != "")
			{
				assetPath = Path.GetDirectoryName(assetPath);
			}
		}

		bool doCreate = true;
        string path = Path.Combine( assetPath, assetName + ".asset" );
        FileInfo fileInfo = new FileInfo(path);
        if ( fileInfo.Exists ) {
            doCreate = EditorUtility.DisplayDialog( assetName + " already exists.",
                                                    "Do you want to overwrite the old one?",
                                                    "Yes", "No" );
        }
        if ( doCreate ) {
            T T_info = Create<T> ( assetPath, assetName );
            Selection.activeObject = T_info;
        }
	}

	public static void Create() {

		Debug.LogError("You should call 'Create' method like this : Create<ExampleData>();");
	}
}

使用方法：

1.写个ScriptableObject。

public class Example : ScriptableObject {
        public int id;
        public string name;
}

2.写个MonoBehavior调用Create方法生成Example格式的数据。

public class ExampleItem: MonoBehaviour {

        [MenuItem("Example/Create/Example Data")]
        static void CreatExample() {

                Scriptablity.Create<Example>();
        }

}

3.在Inspector面板编辑数据。

4.使用该数据

public class ExampleUsage : MonoBehavior {
       public Example exampleInfo;

       void Start()
       {
               Debug.Log(exampleInfo.name);
       }

}