feat(GroundControl): add MQTT message handling and summary display

Assets/Main.unity

@@ -1088,9 +1088,17 @@ MonoBehaviour:
     Port</color>  <color=#7EC8E3>1883</color>
 
     <color=#AAAAAA>Topic</color> 
-    <color=#E3D47E>"unity/#"</color>
+    <color=#E3D47E>"station/#"</color>
 
-    <color=#AAAAAA>Is Connected</color>  <color=#E37E7E>false</color>
+    <color=#AAAAAA>Is Connected</color> 
+    <color=#E37E7E>false</color>
+
+    
+
+    <b><color=#FFC940>Ground Control</color></b>
+
+    <color=#AAAAAA>Message
+    Summary</color>  <color=#E3D47E>"No messages"</color>
 
 '
   m_isRightToLeft: 0
@@ -1196,6 +1204,10 @@ MonoBehaviour:
     - brokerPort
     - topic
     - IsConnected
+  - target: {fileID: 848515247}
+    groupLabel: Ground Control
+    fields:
+    - MessageSummary
 --- !u!222 &587767521
 CanvasRenderer:
   m_ObjectHideFlags: 0
@@ -1709,11 +1721,23 @@ MonoBehaviour:
   m_EditorClassIdentifier: Assembly-CSharp::UltraCombos.MqttBridge
   brokerHost: localhost
   brokerPort: 1883
-  topic: unity/#
+  topic: station/#
   verbose: 1
   onMessage:
     m_PersistentCalls:
-      m_Calls: []
+      m_Calls:
+      - m_Target: {fileID: 848515247}
+        m_TargetAssemblyTypeName: UltraCombos.GroundControl, Assembly-CSharp
+        m_MethodName: OnMQTT
+        m_Mode: 0
+        m_Arguments:
+          m_ObjectArgument: {fileID: 0}
+          m_ObjectArgumentAssemblyTypeName: UnityEngine.Object, UnityEngine
+          m_IntArgument: 0
+          m_FloatArgument: 0
+          m_StringArgument: 
+          m_BoolArgument: 0
+        m_CallState: 2
 --- !u!4 &952249954
 Transform:
   m_ObjectHideFlags: 0

Assets/Scripts/GroundControl.cs

@@ -1,9 +1,38 @@
+using System.Collections.Generic;
+using System.Linq;
+using Newtonsoft.Json;
 using UnityEngine;
 
 namespace UltraCombos
 {
     public class GroundControl : MonoBehaviour
     {
+        [System.Serializable]
+        public class Component
+        {
+            [JsonProperty("key")] public string Key { get; set; }
+            [JsonProperty("order")] public int Order { get; set; }
+            [JsonProperty("width")] public float? Width { get; set; }
+        }
+
+        [System.Serializable]
+        public class Message
+        {
+            [JsonProperty("id")] public string Id { get; set; }
+            [JsonProperty("step")] public int Step { get; set; }
+            [JsonProperty("stepName")] public string StepName { get; set; }
+            [JsonProperty("character")] public string Character { get; set; }
+            [JsonProperty("components")] public List<Component> Components { get; set; } = new();
+            [JsonProperty("title")] public string Title { get; set; }
+            [JsonProperty("result")] public string Result { get; set; }
+            [JsonProperty("updatedAt")] public long UpdatedAt { get; set; }
+        }
+
+        public Dictionary<string, Message> messages = new();
+        public string Station1 => GetSummary(0);
+        public string Station2 => GetSummary(1);
+        public string Station3 => GetSummary(2);
+
         private void Start()
         {
 
@@ -13,6 +42,30 @@ namespace UltraCombos
         {
 
         }
+
+        public void OnMQTT(string topic, string payload)
+        {
+            var parts = topic.Split("/");
+            if (parts.Length != 3)
+            {
+                return;
+            }
+            var id = parts[1];
+            var msg = JsonConvert.DeserializeObject<Message>(payload);
+            messages[id] = msg;
+        }
+
+        private string GetSummary(int index)
+        {
+            var keys = messages.Keys.ToArray();
+            if (keys.Length <= index)
+            {
+                return "No messages";
+            }
+            var id = keys[index];
+            var msg = messages[id];
+            return $"{id} #{msg.Step} {msg.Character}";
+        }
     }
 }