13 was one of the hardest years of my life and many people I know. You're stuck being a victim of your parents problems, HS graduation and a life of your own is way off, and you feel totally not in control of everything that goes on in your life.
I see alot of people tell you to talk to or confront your parents, but I know that rarely works and do NOT be upset if they won't listen, get mad, or whatever. Many parents don't care about the happiness of their kids or act that way, but this doesn't mean there's anything wrong with you, just them. If I thought talking to them would work I'd say to, but I'm guessing you've tried if you could-I would've gotten the crap beaten outta me for telling them I was unhappy personally-or can't. I was informed at 13 that my happiness was unimportant as I was not even a human until I was 18, until then basically a nothing, so I had better be happy for what I had and shut up....
First off, antidepressants are way overrated, don't really work that well, and make you feel like a zombie. Be happy no one is trying to give them to you! Secondly, you need to try and find another way to get rid of aggression beside breaking things (all it ever got me was more trouble for breaking things!) as the situation is probably not going to improve much anytime soon. Letting anger build up in you will make things worse, you need to find something physical to do when you need a release like running, hitting baseballs, yoga meditation, kicking soccer balls, punching a pillow, something to give you an outlet. Besides that you might want to keep a journal as I know it seems like things could be fixed if only ____ or _____ but no one will listen or your dad is being a total jerk and you need to tell someone but there's no one to talk to...writing down your feelings when you're angry is amazingly helpful. So is writing letters to people that you never intend to give them-like writing your mom how you feel about her getting treated the way she is by your dad or your dad about how he treats her badly. I don't care how old you are or what sex you are, but it's OK to cry!!! Of course, you don't want to around your friends but when you are alone and upset cry if you need to or want to, it's a great release. Holding back those tears will not make things better so let them out at an appropriate time. Maybe you have a friend who also has family problems that you can commiserate with, this might be easier with a female than a male, but there are other kids who have crappy home lives, too, and it helps to have someone to talk to. Even a friend can often be as helpful as a therapist to let you get things off your chest. I dunno how I would have made it through middle and high school without my friends. It really helps when you have other people tell you "You know what, you're not crazy but your parents sure are!" because I'm sure it feels like you are going crazy sometimes. You also need to find ways to distract yourself from the things going on that are bothering you...reading is excellent, video games and TV work, too, but anything that will allow you an "escape" is the goal. Sometimes the best thing to do is try not to think about it since there's really not much you can do to change things between your parents and that's your main cause of stress. Anything that absorbs you enough to get you to stop thinking about things for a while and get unemotional.
My mom allowed herself to be pushed around by many guys including my dad and I've even tried to step in the way when some were trying to hit her. The things I had to endure because of it were horrible, as was having to watch her being abused and not do anything to stop it. It's really hard to see the people you love hurt, but this is something you will have to deal with forever as you cannot make people act a certain way or not do things that will hurt them. The good news is that when you get older you will have a bit more control over things like that but your parents will still have whatever problems they're having even when you move out, maybe worse.
One thing you can do to help is maybe go out of your way to help out your mom with household stuff even though dad won't. You can start to watch when she cooks and does chores, and you can help and eventually learn to do some of these things yourself. I'm sure this will improve mom's mood and give her more time to herself. She might even look at things differently when she sees you helping even when dad won't, and I'm sure she'll appreciate whatever help you give her around the house. (It's good to learn this stuff anyway!) This can only improve the situation and isn't that much to ask to help you get less stressed.
As far as being depressed, part of it is your age and the hormones "raging" through you, this should ease up by 15 hopefully if not sooner. As hard as it is to accept, you cannot truly change what's going on with your parents-it's their problems and they are the only ones who can actually change what's causing them. Getting too depressed about it doesn't do anyone any good, what's going to happen is going to happen and it's got nothing to do with you, so you can't feel at all to blame. Just try to love them and do what you can to make life as easy as possible for everyone's sake (without making too many sacrifices, of course) to make daily life more bearable for yourself. Remember that in a few years their relationship will not be as much of a factor in your happiness as you move out and get your own life, so try to take that into consideration when you do get upset. It's only temporary, as far away as independence may seem to you now, and you will get through it no matter how it feels. I'm not trying to belittle your pain, I'm sure it's 100% real, and at 13 I was way more unhappy than you so I do know what you're going through. You just need to keep perspective and try your best to not be affected by your home life...if anything try and learn from it all if possible so as not to make the same mistakes they do. As far as school and friends causing you stress, just do your best in school (I got out of my house sooner by graduating HS a year early so do not neglect your work, good grades will only help at home and with life) and if your friends are really your friends then they shouldn't be causing you too many problems...ok maybe dating stuff(LOL), but these things are universal to us all.
What helped me most at that age were good books, great friends to talk to, meditation, writing (be sure to keep anything you want private hidden well!!!) and music. Keep your eye on the future, but don't forget to try and have as much fun and get as much out of life as you can though, OK. You will make it...anything that doesn't kill you, well, definitely doesn't kill you-LOL!
If you don't have anyone to talk to you can e-mail me, I'm a good listener :)