fix: polish lobby chat and joystick

Client/Assets/Script/xmain/Client/CSharpClientApp.cs

@@ -584,6 +584,7 @@ namespace XGame
                     lobbyWorld?.HandleFrame(frame);
                     break;
                 case FrameworkOpcode.WorldChatMessage:
+                    Debug.Log("[CSharpClientApp] recv WorldChatMessage bytes=" + (frame.Payload?.Length ?? 0));
                     worldChat?.HandleWorldChatMessage(WorldChatMessageMsg.Decode(frame.Payload));
                     break;
             }
@@ -701,13 +702,25 @@ namespace XGame
         private void SendWorldChat(string text)
         {
             text = (text ?? string.Empty).Trim();
-            if (text.Length == 0 || lobbyNet == null)
+            if (text.Length == 0)
             {
                 return;
             }
+            if (lobbyNet == null)
+            {
+                Debug.LogWarning("[CSharpClientApp] drop WorldChatSend: lobbyNet is null");
+                return;
+            }
+            if (!lobbyNet.IsConnected)
+            {
+                Debug.LogWarning("[CSharpClientApp] drop WorldChatSend: lobbyNet is disconnected");
+                return;
+            }
+            byte[] payload = new WorldChatSendMsg { Text = text }.Encode();
+            Debug.Log("[CSharpClientApp] send WorldChatSend bytes=" + payload.Length);
             lobbyNet.SendFramework(
                 FrameworkOpcode.WorldChatSend,
-                new WorldChatSendMsg { Text = text }.Encode());
+                payload);
         }
 
         private void CloseWorldChat()

Client/Assets/Script/xmain/Client/LobbyWorldController.cs

@@ -40,7 +40,7 @@ namespace XGame
         private const float DirectionChangeDot = 0.98f;
         private const float JoystickRadius = 74f;
         private const float JoystickKnobRadius = 28f;
-        private const float JoystickPadding = 34f;
+        private const float JoystickPadding = 100.0f;
         private const float JoystickDeadZone = 0.18f;
         private const float JoystickAcquireRadiusMultiplier = 1.6f;
         private const float CameraMinDistance = 3.5f;