It sounds like you're in the middle of a lot of turmoil that doesn't originate from you. Your father is an unhappy man, and he's taking that out on you. He's not exuding an air of real authority. He's just acting like a d!¢. Unfortunately, you kind of have to be the adult in the room. Otherwise, he is baiting you into becoming oppositional, which he can use as an excuse to get nastier. He has abandoned being the true leader that a father should be. He's miserable about his job and his marriage, so he lashes out at you. It's pathetic. He wants to feel powerful.

The fact that he has a history of assault and battery on you is disturbing. Right now you're dependent on him. (It's his house . . . well his and your mother's.) Your mother should not be okay with him being violent toward you. You don't really have the option of just leaving . . . at least not to go into better circumstances. But you might want to start planning for eventually exiting this home situation. Any chance of you going away to school?

He's a foolish man. Fathers get old. They can expect love back from their sons and daughters commensurate with what they put out. I see loneliness in your dad's future.