FB2 Spectator Mode Patch

/*
    * Name: Spectator Mode fix for Frostbite 2 Engine (Battlefield 3/Need for Speed)
    * Description: Someone automatically adds roll to the spectator camera for some reason
    * this is present in Battlefield 3, 4 Alpha Trial, and Need for Speed
    * Patch by: kiwidog (http://allenthinks.com)
    * Patch for: DICE

    * Functions Hooked: fb::GameRenderer::UpdateViewParams
*/

void __fastcall cfb_GameRenderer_updateViewParams(fb::GameRenderer* thisGameRenderer, void*, fb::GameRenderViewParams* viewParams)
{
    if (viewParams)
    {
        D3DXVECTOR3 mLeft(viewParams->view.m_desc.transform.left.x, 0, viewParams->view.m_desc.transform.left.z);
        D3DXVECTOR3 mForward(viewParams->view.m_desc.transform.forward.x, viewParams->view.m_desc.transform.forward.y, viewParams->view.m_desc.transform.forward.z);

#ifdef SPECTATING
        // YO FIX THIS SHIT
        D3DXVECTOR3 fixedUp;
        D3DXVec3Cross(&fixedUp, &mForward, &mLeft);

        viewParams->view.m_desc.transform.up.x = fixedUp.x;
        viewParams->view.m_desc.transform.up.y = fixedUp.y;
        viewParams->view.m_desc.transform.up.z = fixedUp.z;

        viewParams->view.m_desc.transform.left.x = mLeft.x;
        viewParams->view.m_desc.transform.left.y = mLeft.y;
        viewParams->view.m_desc.transform.left.z = mLeft.z;
#endif
    }
    return fb_GameRenderer_updateViewParams(thisGameRenderer, viewParams);
}