Hi guys. I'm switching to C# from Js and I'm trying to rewrite the JS example of Extanding the Editor. I keep getting a bunch of errors.

Here's my code:

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);
}
}

and here's the Editor code:

using UnityEditor;
using UnityEngine;
using System.Collections;

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

I'm getting quite a few errors and I'm not sure where I am going wrong.

Thanks.

Kamil