phys_hinge abnormal actions

I have an sign on a hinge, it swings fine but the player can grab the
sign with the phys cannon and pull it away from the hinge. After
it is pulled away it will snap back onto it's original position.

any way to fix this?

I don't think there is. The most realistic thing would be to break it
in that situation. You could do the same thing in hl2 singleplayer so i
don't think anyone will care really.

You might try the "change mass to keep stable attachement to world" spawnflag.

Or possibly attach the sign with two phys_lengthcontraints instead, and
set their "keep rigid" flags. But it'll be less work just to make the
hinge break when pulled too much.

You could also make it too heavy to lift with the physcannon... kind of a hack solution, but it's pretty easy to do would be good if you don't want players to be able to remove it. I'm not sure exactly where the no-lift threshold is, but it's pretty low; you can't lift a sofa, refridgerator or stove, so it's probably around 250-500 pounds.

Of course this will have side effects like making the sign swing less when struck with a bullet, but it wouldn't matter too much if it's made of metal.

How do you break the hinge if its pulled to much?

By specifying a breaking force (and torque)..? There aren't that many properties of the hinge :smile: