BLOCKS: Fix issue identifying master block

modules/juce_blocks_basics/topology/internal/juce_ConnectedDeviceGroup.cpp

@@ -305,7 +305,9 @@ private:
     juce::Array<juce::MemoryBlock> incomingPackets;
 
     struct TouchStart { float x, y; };
-    TouchList<TouchStart> touchStartPositions;
+    TouchList<TouchStart> touchStartPositions;
+    
+    Block::UID masterBlock = 0;
 
     //==============================================================================
     juce::Time lastTopologyRequestTime, lastTopologyReceiveTime;
@@ -532,25 +534,28 @@ private:
     }
 
     //==============================================================================
-    static juce::Array<DeviceInfo> getArrayOfDeviceInfo (const juce::Array<BlocksProtocol::DeviceStatus>& devices)
+    juce::Array<DeviceInfo> getArrayOfDeviceInfo (const juce::Array<BlocksProtocol::DeviceStatus>& devices)
     {
         juce::Array<DeviceInfo> result;
-        bool isFirst = true; // TODO: First block not always master block! Assumption violated.
 
         for (auto& device : devices)
         {
             BlocksProtocol::VersionNumber version;
-            BlocksProtocol::BlockName name;
-
-            result.add ({ getBlockUIDFromSerialNumber (device.serialNumber),
-                device.index,
-                device.serialNumber,
-                version,
-                name,
-                isFirst });
-
-            isFirst = false;
-        }
+            BlocksProtocol::BlockName name;
+            
+            const auto uid = getBlockUIDFromSerialNumber (device.serialNumber);
+            
+            // For backwards compatibility we assume the first device we see in a group is the master and won't change
+            if (masterBlock == 0)
+                masterBlock = uid;
+
+            result.add ({ uid,
+                          device.index,
+                          device.serialNumber,
+                          version,
+                          name,
+                          masterBlock == uid });
+       }
 
         return result;
     }