add 添加拖拽功能和测试场景，模型待修改

Assets/UnityTest/ZXL/Scene/ces.unity.meta

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Assets/UnityTest/ZXL/Scripts/Test.meta

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Assets/UnityTest/ZXL/Scripts/Test/DragItem.cs

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+using System;
+using System.Collections;
+using System.Collections.Generic;
+using Sirenix.OdinInspector;
+using UnityEngine;
+using UnityEngine.EventSystems;
+using UnityEngine.Serialization;
+
+namespace UnityTest.ZXL
+{
+    [RequireComponent(typeof(BoxCollider), typeof(Rigidbody))]
+    public class DragItem : MonoBehaviour, IDragHandler, IPointerClickHandler, IEndDragHandler
+    {
+        [FormerlySerializedAs("img")] public RectTransform icon;
+
+        [SerializeField] [ReadOnly] private Vector3 startPosition;
+        [SerializeField] [ReadOnly] private bool isCanPut;
+        [SerializeField] [ReadOnly] private bool isPutIn;
+
+        [SerializeField] private DragData _dragData;
+
+        private void Start()
+        {
+            var rect = GetComponent<RectTransform>();
+            startPosition = rect.anchoredPosition3D;
+            // startPosition = icon.position;
+
+            isPutIn = false;
+            GetComponent<Collider>().enabled = true;
+        }
+
+        public void OnDrag(PointerEventData eventData)
+        {
+            if (isPutIn)
+                return;
+
+            Debug.Log("OnDrag");
+            icon.position = eventData.position;
+        }
+
+        public void OnEndDrag(PointerEventData eventData)
+        {
+            if (isPutIn)
+                return;
+
+            Debug.Log("OnEndDrag");
+            TryPut();
+        }
+
+        public void OnPointerClick(PointerEventData eventData)
+        {
+            if (isPutIn)
+                return;
+
+            Debug.Log("OnPointerClick");
+        }
+
+        void TryPut()
+        {
+            if (target != null && isCanPut)
+            {
+                // 到达目标点的固定位置
+                // icon.position = target.itemPosition;
+                // startPosition = target.itemPosition;
+
+                // 回到原位
+                icon.anchoredPosition3D = startPosition;
+
+                _dragData.PutOrOut(true);
+                isPutIn = true;
+            }
+            else
+            {
+                icon.anchoredPosition3D = startPosition;
+                _dragData.PutOrOut(false);
+            }
+        }
+
+        private DragTarget target;
+
+        private void OnTriggerEnter(Collider other)
+        {
+            Debug.Log($"{transform.parent.name} OnTriggerEnter {other.transform.parent.name}");
+            target = other.GetComponent<DragTarget>();
+            if (target == null)
+                return;
+
+            isCanPut = true;
+        }
+
+        private void OnTriggerExit(Collider other)
+        {
+            Debug.Log($"{transform.parent.name} OnTriggerExit {other.transform.parent.name}");
+            if (isPutIn)
+            {
+                Debug.Log($"已经放入");
+                return;
+            }
+
+            isCanPut = false;
+            target = null;
+        }
+
+#if UNITY_EDITOR
+        [Button]
+        void Add()
+        {
+            var rectTransform = gameObject.GetComponent<RectTransform>();
+            var rect = rectTransform.rect;
+            var boxCollider = GetComponent<BoxCollider>();
+            boxCollider.isTrigger = true;
+            boxCollider.size = new Vector3(rect.width, rect.height, 5);
+            var rigidbody = GetComponent<Rigidbody>();
+            rigidbody.useGravity = true;
+            rigidbody.isKinematic = true;
+            icon = rectTransform;
+            UnityEditor.EditorUtility.SetDirty(this);
+        }
+
+        [Button]
+        void SetDirty()
+        {
+            UnityEditor.EditorUtility.SetDirty(this);
+        }
+#endif
+    }
+
+    [System.Serializable]
+    public struct DragData
+    {
+        public string name;
+        public CharacterInfo info;
+
+        public void PutOrOut(bool isPut)
+        {
+            if (info == null || !isPut)
+                return;
+
+            info.SetCloth(name);
+        }
+    }
+}

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