Add control library for distance sensor and display

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;