备份CatanBuilding瘦身独立工程

Assets/Scripts/UIExtend/UIDrag.cs

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+using UnityEngine;
+using UnityEngine.EventSystems;
+
+public class UIDrag : MonoBehaviour, IBeginDragHandler, IDragHandler, IEndDragHandler, IPointerDownHandler, IPointerUpHandler
+{
+    //按下回调
+    public System.Action OnPointerDownCall;
+    public System.Action OnPointerUpCall;
+    //开始拖动回调
+    public System.Action OnBeginDragCall;
+
+    //拖动中回调
+    public System.Action<PointerEventData> OnDragCall;
+
+    //拖动结束回调
+    public System.Action OnEndDragCall;
+    bool isdrag = false;
+    public bool isTouchTwo = false;
+
+    public void OnPointerDown(PointerEventData eventData)
+    {
+        OnPointerDownCall?.Invoke();
+    }
+
+    public void OnPointerUp(PointerEventData eventData)
+    {
+        OnPointerUpCall?.Invoke();
+    }
+
+    public void OnBeginDrag(PointerEventData eventData)
+    {
+#if UNITY_EDITOR
+        if (Input.GetMouseButton(0))
+#else
+        if (Input.touchCount == 1 || Input.touchCount == 2)
+#endif
+        {
+            OnBeginDragCall?.Invoke();
+            isdrag = true;
+        }
+    }
+
+    public void OnDrag(PointerEventData eventData)
+    {
+        OnDragCall?.Invoke(eventData);
+        if (isTouchTwo)
+        {
+#if !UNITY_EDITOR
+            //if (Input.touchCount == 1)
+            //{
+            //    if (!isdrag)
+            //    {
+            //        OnBeginDragCall?.Invoke();
+            //        isdrag = true;
+            //    }
+            //}
+            //else 
+            if (Input.touchCount == 2)
+            {
+                //双指操作
+                if (isdrag)
+                {
+                    OnEndDragCall?.Invoke();
+                    isdrag = false;
+                }
+            }
+#endif
+        }
+    }
+
+    public void OnEndDrag(PointerEventData eventData)
+    {
+        if (isdrag)
+        {
+            OnEndDragCall?.Invoke();
+            isdrag = false;
+        }
+    }
+    //双指操作
+}