fix crash when no HMD detected

Author: sd805

L4D2VR/hooks.cpp

@@ -210,9 +210,12 @@ HRESULT __stdcall Hooks::dPresent(IDirect3DDevice9 *pDevice, const RECT *pSource
 		iD9on12->ReturnUnderlyingResource(mVR->d9RightEyeTexture, 0, nullptr, nullptr);
 	}
 
-	mVR->UpdatePosesAndActions();
-	mVR->UpdateTracking(mVR->setupOrigin);
-
+	if (mVR->isInitialized)
+	{
+		mVR->UpdatePosesAndActions();
+		mVR->UpdateTracking(mVR->setupOrigin);
+	}
+	
 	return hkPresent.fOriginal(pDevice, pSourceRect, pDestRect, hDestWindowOverride, pDirtyRegion);
 }
 

L4D2VR/vr.cpp

@@ -72,6 +72,8 @@ VR::VR(Game *game) {
 
     std::thread configParser(&VR::WaitForConfigUpdate, this);
     configParser.detach();
+
+    isInitialized = true;
 }
 
 

L4D2VR/vr.h

@@ -101,6 +101,7 @@ class VR
 	IDirect3DTexture9 *d9RightEyeTexture;
 
 	bool isVREnabled;
+	bool isInitialized;
 
 	bool mPressedLeftStick = false;
 	bool mChangedItem = false;