Custom Attribue: Public 변수 인스펙터상 ReadOnly로 만들기

Public을 인스펙터에서 수정하지 못하게 하고 싶을때

 

 

사용 예시:

[ReadOnly] public AnimationState currentCarAnimationState = AnimationState.Idle;
[ReadOnly] public AnimationState currentCharAnimationState = AnimationState.Idle;

 

 

 

 

커스텀 Attribute

소스 코드:

using UnityEngine;
using System;
 
#if UNITY_EDITOR
namespace UnityEditor
{
    [CustomPropertyDrawer(typeof(ReadOnlyAttribute), true)]
    public class ReadOnlyAttributeDrawer : PropertyDrawer
    {
        // Necessary since some properties tend to collapse smaller than their content
        public override float GetPropertyHeight(SerializedProperty property, GUIContent label)
        {
            return EditorGUI.GetPropertyHeight(property, label, true);
        }
 
        // Draw a disabled property field
        public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
        {
            GUI.enabled = !Application.isPlaying && ((ReadOnlyAttribute)attribute).runtimeOnly;
            EditorGUI.PropertyField(position, property, label, true);
            GUI.enabled = true;
        }
    }
}
#endif
 
[AttributeUsage(AttributeTargets.Field)]
public class ReadOnlyAttribute : PropertyAttribute
{
    public readonly bool runtimeOnly;
 
    public ReadOnlyAttribute(bool runtimeOnly = false)
    {
        this.runtimeOnly = runtimeOnly;
    }
}