Break on too much weight

In my map, I want an area of the floor to be breakable, but it will
only break after a certain amount of pressure is applied to it. The
player mass is around 60.00 to 80.00, so two players would equal a mass
of [ 120.00 ] or [ 160.00 ]. I would like to make the floor after two
players weight is applied. Or, a heavy physics object is applied.

there's no way to set a weight limit per se, but maybe you could make a trigger so that would break it instead. Like after 2 ppl have passed through a trigger multiple the floor breaks.

... or you could actually make structural integrity. the constraint entities have torque values.

So if it were a bridge or something as such, you'd put up suspension cables with constraints and you put breakable on them with a torque value with some series of outputs to the other objects in the system. This would make it so the object hanging (could be frozen and triggered by the break) fall. etc etc.

This, however, is just an idea. I'm not sure about the precise specifics.

Crono is right - this scenario is definately possible with source's
physics. Check out all the physics_* entities in the SDK documentation
( http://www.valve-erc.com/srcsdk/Levels/physics.html ) and their
example maps, and you can probably figure out a way to get it working
how you want. Lots of experimentation will probably be needed, so you
should test the contraption in a seperate map as opposed to "in place"
if your map is already taking any substantial time to compile.

The problem is that if you've ever walked on a physbox, you get really
jerky shaking movement, and jumping can exert more force than just
standing on something. Physics are odd...

The problem is that if you've ever walked on a physbox, you get really
jerky shaking movement, and jumping can exert more force than just
standing on something. Physics are odd...

That is why you would check the disable motion flag. Then once enough weight is on the bridge and the cables snap they will trigger enable motion.

Though, with the phys box disabled I dont know if it could be
manipulated my player weight... I'm sure there is a work around to
this. I will look into it.

Disabled physboxes are not affected by anything, and effectively turn the weight on the constraints to zero.

Something you could do is make a trigger_teleport 1 unit thick above
the floor with a disabled func_physbox. OnStartTouch adds to a
math_counter, OnEndTouch subtracts, when you hit the limit, the counter
will enable motion on a physbox.

Have you had a look at the env_player_surface_trigger?

Have you had a look at the env_player_surface_trigger?

That makes an output when a player travles from one texture to
another. Like if the player walks from carpet to wood it can set
off an alarm.

The math counter idea is a good one. Then to make it break when
physics objects are tossed or placed on it you could make a physbox
that is covred by a playerclip. Add some constraints, that should
do it.

I got it: the Game_zone_player brush entity. It counts how many players
are in its area. I it has, say two for example, you can make it break
the glass!