Add control library for distance sensor and display

Assets/ControlLibrary/ControlLibrary.cs

@@ -19,6 +19,12 @@ public class ControlLibrary : MonoBehaviour
     [DllImport("libc_control")]
     private static extern IntPtr get_configuration(out int module_id); // the data this points to will be invalidated when called again
 
+    [DllImport("libc_control")]
+    public static extern int send_string_control(int module_id, string s);
+
+    [DllImport("libc_control")]
+    public static extern double get_distance_control(int module_id);
+
     [DllImport("libc_control")]
     public static extern bool control_sentry_init(
         string dsn,

Assets/DisplayModule.cs

@@ -1,4 +1,5 @@
 using UnityEngine;
+using System;
 
 public class DisplayModule : ModuleBase
 {
@@ -17,5 +18,6 @@ public class DisplayModule : ModuleBase
         // Replace with actual hardware communication logic
         Debug.Log($"[DisplayModule] Sending display text: {text}");
         // Example: ControlLibrary.send_display_text(Int32.Parse(moduleID), text);
+        ControlLibrary.send_string_control(Int32.Parse(moduleID), text);
     }
 }

Assets/DistanceSensorModule.cs

@@ -1,20 +1,48 @@
+using System;
+using UnityEngine;
+
 public class DistanceSensorModule : ModuleBase
 {
-    public bool objectDetected;
-    public float distanceMeters;
-    public string[] infoLines = new string[0];
+    // Keep a fixed-size array (no GC alloc every frame)
+    public string[] infoLines = new string[2];
+
     public override string moduleType => "Distance";
     public override string moduleName => "Distance Sensor Module";
 
+    // Optional: slow down polling to avoid spamming hardware
+    [SerializeField] float pollHz = 10f;
+    float nextPollTime;
+
     void Update()
     {
-        // Replace with your ControlLibrary call pattern
-        // var reading = ControlLibrary.get_distance(...)
+        // Always show something immediately
+        infoLines[0] = $"ModuleID raw: '{moduleID}'";
 
-        if (!objectDetected)
-            infoLines = new[] {"Object: Not detected" };
-        else
-            infoLines = new[] { "Object: Detected", $"Distance: {distanceMeters:F2} m" };
+        // Poll at a fixed rate (avoids frame spam)
+        if (Time.unscaledTime < nextPollTime) return;
+        nextPollTime = Time.unscaledTime + (1f / Mathf.Max(1f, pollHz));
+
+        if (!int.TryParse(moduleID, out var id))
+        {
+            infoLines[1] = "ERROR: moduleID is not an int";
+            return;
+        }
+
+        try
+        {
+            // Control library call
+            double distance = ControlLibrary.get_distance_control(id);
+
+            infoLines[1] = $"Distance: {distance:F0} mm";
+        }
+        catch (Exception e)
+        {
+            // SHOW THE PROBLEM ON SCREEN (works in release builds)
+            infoLines[1] = $"EXCEPTION: {e.GetType().Name}: {e.Message}";
+
+            // Also log to Player.log (works in builds)
+            Debug.LogException(e);
+        }
     }
 
     public string[] GetInfoLines() => infoLines;

Assets/Module/DistanceSensorModule.prefab

@@ -77,9 +77,10 @@ MonoBehaviour:
   m_Script: {fileID: 11500000, guid: e4735e9a5ae30490bba1dc35e4603bce, type: 3}
   m_Name: 
   m_EditorClassIdentifier: '::'
-  objectDetected: 0
-  distanceMeters: 0
-  infoLines: []
+  infoLines:
+  - 
+  - 
+  pollHz: 10
 --- !u!1 &5041994602013865196
 GameObject:
   m_ObjectHideFlags: 0