no message (+3 squashed commit)

Squashed commit:

[e7c11be] modify read me

[f1b2eb2] add image

[b0568ec] Add read me

Author: ahiwjhb

Assets/Scenes/Demo.unity

@@ -330,6 +330,17 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: 39b7687e21ae28348b198d5a533819cd, type: 3}
   m_Name: 
   m_EditorClassIdentifier: 
+  peopel:
+    rid: 7289075113654747151
+  a: 10
+  b: 20
+  references:
+    version: 2
+    RefIds:
+    - rid: 7289075113654747151
+      type: {class: Student, ns: Demo.Test, asm: Assembly-CSharp}
+      data:
+        m_name: ABC
 --- !u!4 &1545680082
 Transform:
   m_ObjectHideFlags: 0

Assets/Scripts/SerializeExtension/Editor/SerializeExtensionDrawer.cs

@@ -98,7 +98,22 @@ private void ShowPolymorphismField(Type abstractType, Rect position, SerializedP
                         property.managedReferenceValue = null;
                     }
                     else {
-                        property.managedReferenceValue = FormatterServices.GetSafeUninitializedObject(subTypes[newSelectIndex - 1]); // 将选择框的一个偏移量减回来
+                        bool hasDefaultConstructor = false;
+
+                        Type type = subTypes[newSelectIndex - 1]; // 将选择框的一个偏移量减回来
+                        ConstructorInfo[] constructors = type.GetConstructors();
+                        // 查找无参构造函数
+                        foreach (var constructor in constructors) {
+                            if (constructor.GetParameters().Length == 0) {
+                                // 调用无参构造函数并返回实例
+                                hasDefaultConstructor = true;
+                               property.managedReferenceValue = constructor.Invoke(null);
+                            }
+                        }
+
+                        if (!hasDefaultConstructor) {
+                            property.managedReferenceValue = FormatterServices.GetSafeUninitializedObject(type);
+                        }
                     }
                     property.serializedObject.ApplyModifiedProperties(); //更改多态类型后必须马上保存，否则后续序列化可能会出现异常
                 }

Assets/Scripts/Test/Person/Student.cs

@@ -1,4 +1,4 @@
-using Demo.Test;
+using Core;
 using System;
 using UnityEngine;
 
@@ -7,6 +7,7 @@ namespace Demo.Test
     [Serializable]
     public class Student : IPerson
     {
-        [SerializeField] int student_id;
+        [SerializeExtension(canWrite: false)]
+        [SerializeField] string m_name = "ABC";
     }
 }

Assets/Scripts/Test/Person/Teacher.cs

@@ -6,8 +6,6 @@ namespace Demo.Test
     [Serializable]
     public class Teacher : IPerson
     {
-        [SerializeField] float teach_id;
-
-        [SerializeField] int student_count;
+        [SerializeField] int m_teachID;
     }
 }

Assets/Scripts/Test/Test.cs

@@ -4,6 +4,23 @@
 
 public class Test : MonoBehaviour
 {
-    [SerializeExtension] 
+    //[SerializeExtension]
+    //[SerializeReference] IPerson peopel;
+
+    //[SerializeExtension(proxyPropertyName: nameof(Health))]
+    //[SerializeField] int health;
+
+    //public int Health {
+    //    get => health;
+    //    set => health = Mathf.Clamp(value, 0, 100);
+    //}
+
+    [SerializeExtension]
     [SerializeReference] IPerson peopel;
+
+
+    [SerializeField] int a = 10;
+
+    [SerializeExtension(canWrite: false)]
+    [SerializeField] int b = 20;
 }