Editor

示例：

    using UnityEngine;
    using System.Collections;

    // This is not an editor script.
    public class MyPlayer : MonoBehaviour {
        public int armor = 75;
        public int damage = 25;
        public GameObject gun;

        void Update () {
        // Update logic here...
        }
    }

    using UnityEditor;
    using UnityEngine;
    using System.Collections;

    // Custom Editor using SerializedProperties.
    // Automatic handling of multi-object editing, undo, and prefab overrides.
    [CustomEditor(typeof(MyPlayer))]
    [CanEditMultipleObjects]
    public class MyPlayerEditor : Editor {
        SerializedProperty damageProp;
        SerializedProperty armorProp;
        SerializedProperty gunProp;

        void OnEnable () {
            // Setup the SerializedProperties.
            damageProp = serializedObject.FindProperty ("damage");
            armorProp = serializedObject.FindProperty ("armor");
            gunProp = serializedObject.FindProperty ("gun");
        }

        public override void OnInspectorGUI() {
            // Update the serializedProperty - always do this in the beginning of OnInspectorGUI.
            serializedObject.Update ();

            // Show the custom GUI controls.
            EditorGUILayout.IntSlider (damageProp, 0, 100, new GUIContent ("Damage"));

            // Only show the damage progress bar if all the objects have the same damage value:
            if (!damageProp.hasMultipleDifferentValues)
                ProgressBar (damageProp.intValue / 100.0f, "Damage");

            EditorGUILayout.IntSlider (armorProp, 0, 100, new GUIContent ("Armor"));

            // Only show the armor progress bar if all the objects have the same armor value:
            if (!armorProp.hasMultipleDifferentValues)
                ProgressBar (armorProp.intValue / 100.0f, "Armor");

            EditorGUILayout.PropertyField (gunProp, new GUIContent ("Gun Object"));

            // Apply changes to the serializedProperty - always do this in the end of OnInspectorGUI.
            serializedObject.ApplyModifiedProperties ();
        }

        // Custom GUILayout progress bar.
        void ProgressBar (float value, string label) {
            // Get a rect for the progress bar using the same margins as a textfield:
            Rect rect = GUILayoutUtility.GetRect (18, 18, "TextField");
            EditorGUI.ProgressBar (rect, value, label);
            EditorGUILayout.Space ();
        }
    }

另外，如果自动处理多对象编辑、撤销、和预制重写是不需要的，脚本变量可以直接修改由编辑器不使用serializedobject和serializedproperty系统，如下面的例子。

    using UnityEditor;
    using UnityEngine;
    using System.Collections;


    // Example script with properties.
    public class MyPlayer : MonoBehaviour {
        public int damage;
        public int armor;
        public GameObject gun;

        // ...other code...
    }


    // Custom Editor the "old" way by modifying the script variables directly.
    // No handling of multi-object editing, undo, and prefab overrides!
    [CustomEditor (typeof(MyPlayer))]
    public class MyPlayerEditor : Editor {

        public override void OnInspectorGUI () {
            MyPlayer mp = (MyPlayer)target;

            mp.damage = EditorGUILayout.IntSlider ("Damage", mp.damage, 0, 100);
            ProgressBar (mp.damage / 100.0f, "Damage");

            mp.armor = EditorGUILayout.IntSlider ("Armor", mp.armor, 0, 100);
            ProgressBar (mp.armor / 100.0f, "Armor");

            bool allowSceneObjects = !EditorUtility.IsPersistent (target);
            mp.gun = (GameObject)EditorGUILayout.ObjectField ("Gun Object", mp.gun, typeof(GameObject), allowSceneObjects);
        }

        // Custom GUILayout progress bar.
        void ProgressBar (float value, string label) {
            // Get a rect for the progress bar using the same margins as a textfield:
            Rect rect = GUILayoutUtility.GetRect (18, 18, "TextField");
            EditorGUI.ProgressBar (rect, value, label);
            EditorGUILayout.Space ();
        }
    }

    void OnSceneGUI()
    {
        m_pEvent = Event.current;
        if (m_pEvent.type == EventType.mouseDown && m_pEvent.button == 1) {
            Ray ray = HandleUtility.GUIPointToWorldRay(m_pEvent.mousePosition);
            if(isAddNode && Physics.Raycast(ray, out hit))
            {
                GameObject go = GameObject.CreatePrimitive(PrimitiveType.Cube);
                go.transform.position = hit.point;
                go.transform.SetParent(emiter.transform);
            }
        }

        GUILayout.BeginArea (new Rect (Screen.width - 200, Screen.height - 100, 100, 50));
        isAddNode = GUILayout.Toggle (isAddNode, "isAddNode");
        GUILayout.EndArea ();
    }

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