Unity--PropertyAttribute和PropertyDrawer结合使用将string转为资源引用(优化)

zlQ_

于 2018-09-26 10:10:29 发布

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分类专栏： Unity 文章标签： unity PropertyAttribute PropertyDrawer EditorGUI ObjectField

本文链接：https://blog.youkuaiyun.com/zlQQhs/article/details/82849336

using UnityEditor;
using UnityEngine;

[CustomPropertyDrawer(typeof(Reference))]
public class ResReferenceDrawer : PropertyDrawer
{
    public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
    {
        var reference = (Reference)attribute;
        switch (reference.RefType)
        {
            case ReferenceType.Prefab:
                HandlePrefabReference(position, property, label);
                break;
        }
    }

    private void HandlePrefabReference (Rect position, SerializedProperty property, GUIContent label)
    {
        if (SerializedPropertyType.String != property.propertyType)
        {
            EditorGUI.PropertyField(position, property);
            return;
        }

        //根据路径得到一个类型为GameObject的对象
        var prefab = (GameObject)AssetDatabase.LoadAssetAtPath(property.stringValue, typeof(GameObject));
        //ObjectField会在Inspector面板中显示一个框，后面带一个小按钮，点击后弹出面板选择prefab
        var obj = (GameObject