Oculus VR and its founder Palmer Luckey has been sued by ZeniMax Media and id Software over claims the company illegally misappropriated trade secrets. The lawsuit, which was filed in a Texas court today, also accuses Palmer and company of breaching contract, and unfair competition. Facebook announced plans to purchase Oculus VR, the company that makes the Oculus Rift virtual reality headset, for $2 billion in March. Weeks later, letters from ZeniMax were sent to Oculus and Facebook, claiming video game programmer John Carmack (who worked for Oculus) used technology it had developed in-house.