fix a few build issues

Source/SenseGlove/Private/SenseGlove/Animation/SGVirtualHandAnimInstanceProxy.cpp

@@ -35,6 +35,7 @@
 
 #include "SenseGlove/Animation/SGVirtualHandAnimInstanceProxy.h"
 
+#include "Animation/Skeleton.h"
 #include "BoneContainer.h"
 #include "BoneControllers/AnimNode_ModifyBone.h"
 #include "BonePose.h"

Source/SenseGlove/Private/SenseGlove/Components/SGVirtualHandComponent.cpp

@@ -50,6 +50,7 @@
 #include "SenseGlove/Components/SGWristTrackerComponent.h"
 #include "SGCore/SGHapticGlove.h"
 #include "SGDebug/SGDebugVirtualHand.h"
+#include "SGLog/SGLog.h"
 #include "SGSettings/SGSettings.h"
 #include "SGTracking/SGGloveTracker.h"
 

Source/SenseGlove/Public/SenseGlove/Animation/SGVirtualHandAnimInstanceProxy.h

@@ -45,6 +45,10 @@
 
 #include "SGVirtualHandAnimInstanceProxy.generated.h"
 
+class USkeletalMesh;
+class USkeleton;
+class USGVirtualHandComponent;
+
 USTRUCT()
 struct SENSEGLOVE_API FSGVirtualHandAnimInstanceProxy : public FAnimInstanceProxy
 {

Source/SenseGloveTracking/Private/SGTracking/SGGloveTracker.cpp

@@ -94,7 +94,7 @@ struct USGGloveTracker::FImpl
     void UpdateGloves() const;
 };
 
-USGGloveTracker* USGGloveTracker::GetInstance(const UObject* WorldContextObject = nullptr)
+USGGloveTracker* USGGloveTracker::GetInstance(const UObject* WorldContextObject)
 {
     const UWorld* World{WorldContextObject ? WorldContextObject->GetWorld() : FSGEngineUtils::GetWorld()};
     USGGloveTracker* Instance{IsValid(World) ? World->GetSubsystem<USGGloveTracker>() : nullptr};

Source/SenseGloveTracking/Public/SGTracking/SGGloveTracker.h

@@ -50,7 +50,7 @@ class SENSEGLOVETRACKING_API USGGloveTracker : public UWorldSubsystem
     GENERATED_BODY()
 
 public:
-    static USGGloveTracker* GetInstance(const UObject* WorldContextObject);
+    static USGGloveTracker* GetInstance(const UObject* WorldContextObject = nullptr);
 
 private:
     struct FImpl;