观察者TCP通信对接，实时列表优化，观察者模式界面显示逻辑

Assets/Scripts/Scenes/Ride/Scripts/OnlinePlayerController.cs

@@ -45,8 +45,14 @@ namespace Assets.Scenes.Ride.Scripts
         protected override void Compute()
         {
             currentlatlong = mainController.Along(totalDistance);//下一个坐标
-           
-            diff = Math.Round((totalDistance - _playerController.TotalDistance) * 1000, 0);
+            if (_playerController != null)
+            {
+                diff = Math.Round((totalDistance - _playerController.TotalDistance) * 1000, 0);
+            }
+            else
+            {
+                diff = 0;
+            }
         }
         double diff = 0;
         public void SetDataSource(double _totalDistance, double _distance,string Name,double weightKg,int index=0)
@@ -97,7 +103,7 @@ namespace Assets.Scenes.Ride.Scripts
 
         public void RemoveSelf()
         {
-            arrowImage.gameObject?.Destroy();
+            arrowImage?.gameObject?.Destroy();
             headPanel?.Destroy();
             infoPanel?.Destroy();
             transform.gameObject.Destroy();
@@ -107,7 +113,7 @@ namespace Assets.Scenes.Ride.Scripts
         {
             var playerScreenPos = Camera.main.WorldToScreenPoint(transform.position);
             //如果是比赛模式头像
-            if (mainController.cyclingController.Mode == CyclingModel.Competition)
+            if (mainController.cyclingModel == CyclingModel.Competition)
             {
                 playerScreenPos.y += 10f;
             }
@@ -162,10 +168,22 @@ namespace Assets.Scenes.Ride.Scripts
         }
 
         protected override void MoveGraphHead()
+        {
+            if (mainController.cyclingModel == CyclingModel.Competition)
+            {
+                MoveGraghHead4Race();
+            }
+            else
+            {
+                MoveHead();
+            }
+        }
+
+        private void MoveHead()
         {
             var itemIndex = chartDataSourceScript.GetViewIndex(CurrentIndex);
             var m = graph.DataSource.GetPoint("Player 2", itemIndex);
-          
+
             graph.PointToWorldSpace(out Vector3 itemPosition, m.x, m.y, "Player 2");
             itemPosition.x -= 12f;
             itemPosition.y += 5f;
@@ -196,5 +214,20 @@ namespace Assets.Scenes.Ride.Scripts
                 }
             }
         }
+
+        private void MoveGraghHead4Race()
+        {
+            MoveHead();
+            var rect = ((RectTransform)(headPanel.transform));
+            //如果切换到当前用户，当前用户头像变大
+            if (mainController.currentPlayer.UserId == UserId)
+            {
+                rect.DOScale(new Vector3(1.5f, 1.5f, 1.5f), 0.5f);
+            }
+            else
+            {
+                rect.DOScale(new Vector3(1f, 1f, 1f), 0.5f);
+            }
+        }
     }
 }