unity monitor property

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尝试制作了一个监听任意Object属性的方片条.主要思路就是通过枚举该对象的属性,显示在inspector上.

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public class ProgressListener : MonoBehaviour{
    [HideInInspector]
    public float progressListened;
    [HideInInspector]
    public string progressName ="unidentified";
    
    
    public Object target;
    private Image _image;
    private bool _isTargetNotNull;
    private void Awake(){
        _isTargetNotNull = target != null;
        _image = this.GetComponent<Image>();
    }

    private float GetValue(){
        if (_isTargetNotNull){
            Type targetType = target.GetType();
            var propertyInfo = targetType.GetProperty(progressName);
            if (propertyInfo != null) return (float) propertyInfo.GetValue(target);
        }
        return 0;
    }
    void Update(){
        progressListened = GetValue();
        _image.fillAmount = progressListened;
    }
}

and to make it accessible from inspector.we iterator the scriptobject’s member and give a popup list to user.

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public class ProgressListenerDrawer : Editor{
    private SerializedProperty _serializedTarget;
    public string[] targetFeatureNames;


    private void GetFeatureNames(){
        var serializedTargetValues= serializedObject.FindProperty("target").objectReferenceValue;
        var targetFeatureNamesList = new List<string>();
        foreach (var variable in serializedTargetValues.GetType().GetProperties()){
            if(variable.PropertyType==typeof(float))
                targetFeatureNamesList.Add(variable.Name);
        }
        targetFeatureNames = targetFeatureNamesList.ToArray();
    }
    
    void OnEnable(){
        _serializedTarget = serializedObject.FindProperty("target");
        GetFeatureNames();
        var foundProperty= serializedObject.FindProperty("progressName");
        index = Array.IndexOf(targetFeatureNames,foundProperty.stringValue);
    }
    private int index;
    public override void OnInspectorGUI(){
        base.OnInspectorGUI();
        index = EditorGUILayout.Popup(
            "Feature:",
            index,
            targetFeatureNames);
        var foundProperty= serializedObject.FindProperty("progressName");
        foundProperty.stringValue = (targetFeatureNames[index]);
        foundProperty.serializedObject.ApplyModifiedProperties();
    }
}

很方便.