ok i need a invisible barrier that can be killed via a output and also allows bullets/nades etc to pass through it, whilst stopping the player from passing through it

Use a clip brush and try tie it to an entity that won't affect it's properties, then set it up to toggle.

like a func_detail

actually, it's not a CLIP brush you need, but a PLAYERCLIP brush. There's a specific tool texture for these, and they allow everything through except players.

Yes but without tying it to an entity you won't be able to kill it. func detail would be a poor choice as it would not allow bullets through

ok so i can texture it playerclip...but what type of brush is best bearing in mind that i want to kill it on a output....and func_detail cant be named so cant have a output assigned to it.

i have in mind a train passing trackposition4 and then outputting kill "what ever the block is"

as a tank is rumbling through barbed wire and breaking it so allies can spill though

func_lod won't work either. the shape of your brush is up to you, as long as it's valid.

You can try with func_brush, to see if its solidity feature includes bullets (more than likely so) or if it only blocks players.

you can link the playerclip brush to a train entity and make it move out of the way.

I use several of these in my map. I use func_wall_toggle, since I found that if it was func_brush, it wouldnt reappear the next round. No problems with the func_wall_toggle.

Actually I just discovered that func_wall_toggle is the same thing as func_brush with Solidity set to Toggle, so that might work too.

func_button :)
it ain't a pretty solution but it works ^^

been playing around and ended up using a fun_breakable with playerclip texture. then on pass i output kill and there we go it vanishes and the players can carry on. problem solved.

thanks for the input i tried out a few and now i can pick and choose to see what works best.

:-) thanks for the help

Are you sure bullets go through that func_breakable????

works well actually.

make func_breakable with texture player clip so u cant go through but bullets and rockets etc can go through...set min damage to hurt, to 300 or so...set material to wood.

then output a break..

just tested and its perfect.

as the barbed wire model vanishes, wood splinters apear as the block breaks :-)