Run up there, shove into the room, tell everyone, "They're coming!" in a worried, 'get your shit together and let's MOVE' tone of voice, heading to my room to start tossing important things into a bag before shouldering my rifle. I'm prepared for them.
REAL answer: It's the middle of the night, why would I have a light on to watch TV anyways? That sounds like a terrible idea. Especially since my night-vision is excellent, and when you combine that with a good sense of where I am anyways, I very, very rarely need light in the dark. I haven't stepped on a dog or cats tail in the dark in twenty years.
And I'm 22.
If it gets violent, I live in Texas. My Castle is Protected by Guns. You Are in My Castle, And Violent. You Will Not Stay In My Castle.