Door slam Technique?
 

What skill(s) would one use to slam a door into an opponent and what damage/conditions would it impose on the victim?

There are two main scenarios in my mind where this comes into play:

1. Character A knows Character B is right behind a door and there is plenty room for Character B to maneuver on their side. Character A pushes on the door fiercely, damaging Character B (or at least stunning them) and knocks them back a few feet (possibly even knocking them over).

2. Same scenario, but Character B is in a much smaller space. Character A pushes the door as before, but instead of merely knocking Character B back, traps them between the door and wall. Or, it just traps an arm behind the door.

What if two or more characters are pushing on the door?

Re: Door slam Technique?
 

I'd go with Forced Entry.

Re: Door slam Technique?
 

Maybe, but I was thinking in a general combat sense. That is to say, in both cases, the door isn't locked.

Re: Door slam Technique?
 

Off the top of my head:
A is essentially hitting B with a large, flat, hard object. I'd say it's a Shield Bash in terms of damage , with a roll based off of DX (or, if you're a generous GM, Brawling or even Kicking, if that's how you're opening the door) at a penalty for lack of manuverability.

I'd hesitate to call it a Technique (at least in the capitalized, GURPS-rules sense). That would imply that it's something you can practice. I suppose one could, in theory, spend an hour every day slamming a door onto a practice dummy, but that doesn't seem like something anyone would actually do.

Re: Door slam Technique?
 

Since the goal is to move an object (the door) rather than to damage it directly, I'd base the it off of Shove or Push Kick.

Re: Door slam Technique?
 

I'd say you've grappled them using the door, either their torso (if there's some relatively immovable object right behind them, like a bookshelf, desk, file cabinet, etc.) they can be forced against or just their arm/hand. You'd have to use an arm to keep them grappled with the door on future turns.

If the target wasn't expecting this, I'd make an IQ roll for surprise to see if they get an active defense to stop the door from hitting them in the face or a dodge to avoid getting trapped in the door.

Re: Door slam Technique?
 

There's also Number 3, which is rarer, but not unheard of: Character B is standing on the side of a stairwell door, and when Character A shoves it open, they push Character B backwards...down some stairs.

Re: Door slam Technique?
 

That is a really good question! And something very likely to happen in my Cliffhangers campaign.

My 2 cents:
Kicking or pushing a door, to make it swing into someone, sounds like a Shove or a Push Kick. To keep it simple, unless it's a very heavy or door or fitted with a hydraulic pump for mechanically opening/closing it, it should just flip all the way up. So I wouldn't bother with woprking out Knockback for the door. Which means I don't have to figure out the door's effective ST...

The door hitting someone? Well, several situations can arise:
1) Guy is standing some distance from the door, the door is only pushed to begin witn, and is let to swing of it's own accord the rest of the way. .The door slams into him, hitting like a striking attack. Work out damage like "Kiss the Carpet/Wall/Car door" from MA. That works out to +1 damage, using a punch for shoving the door open, or a kick for kicking it open.
2) Guy is standing still some distance from the door, shoved or kicked open, with the attacker following through. This time I'd say it hits more like a Slam causing damage and mostly knocking the enemy down, and/or back if enough damage to cause Knockback is dealt, like a regular slam.
3) Guy is standing right at door. As #2, bit since the door has traveled less distance, I'd say #2 dealt a harder Slam. Also, if the attacker follows through, I'd give some bonus for the Slam, both here in #3 and above in #2.

Also, if the enemy can be knocked down at the top step of a staircase, or even knocked back and down it, all the more effective!
If the enemy is pushed against a wall, effectively pinned there between it and the door, it should count as a Pin. Normally (IIRC) Pins only apply to prone targets, but I'd allow it here. Sure, he's not getting Ground Fighting penalties, but it should be at least as effective being pinned by a door as by a human. And it's no use softening up the door with a knee strike or elbow strike before breaking free.

Re: Door slam Technique?
 

Okay, how about the trick where someone's listening with their ear to a door and you, objecting to being eavesdropped on, give the door a mighty kick?

Re: Door slam Technique?
 

Or, looking through the peephole!

http://www.youtube.com/watch?v=LqV0PBDEHYg


In answer to the OP's question, this is handled in MA, I believe. It's called "Proxy Fighting," page 132. It even uses slamming doors as an example.

"When punching or kicking an object at someone out of reach, add the usual range penalty."

So, you would punch or kick or shove (using DX or Brawling) the door, with range penalties. Use the Wait maneuver until he comes within range. I would use shield-slam damage, as suggested in an above post.