Unity3D Custom Inspector Editor Extension(C#)

CustomInspectorExtension.cs

// Source:http://answers.unity3d.com/questions/133838/extending-the-editor-with-c.html
// 这个代码存为LookAtPoint.cs
using UnityEngine;
using System.Collections;

public class LookAtPoint : MonoBehaviour {
public Vector3 lookAtPoint;

// Use this for initialization
void Start () 
{
    lookAtPoint = Vector3.zero;
}

// Update is called once per frame
void Update () 
{
    transform.LookAt(lookAtPoint);
}
}

//===============================================

//下面的代码放在另一个代码文件中，并存放在Editor目录下
using UnityEditor;
using UnityEngine;
using System.Collections;

[CustomEditor(typeof(LookAtPoint))]
public class LookAtPointEditor : Editor
{
    public override void OnInspectorGUI()
    {
        (target as LookAtPoint).lookAtPoint = EditorGUILayout.Vector3Field("Look At Point", target.lookAtPoint);
        if(GUI.changed)
        {
            EditorUtility.SetDirty(target);
        }
    }
}