1. A forcefield allowing only the player to walk trough. Blocking any other entity. With preference that it even blocks Energy Pellets. This shouldn't be a portal cleanser, I need it so that you keep your portals.

2. Other way around, Players cant walk trough, any other object can.

If you need to know, or already know more forcefields and how to make them. Ask here, as that way everyone can use it.

1. That will require some playing around with entities. Not sure how to do it.

2. All you need is a brush textured with the playerclip texture. Will only stop the player.

1. I've got no clue how to make this one... I'll try stuff out, but please, if you know already, save me the effort of finding it on my own.

2. Thanks

1. http://developer.valvesoftware.com/wiki ... p_vphysics

EDIT: WTF? I didn't see the last message.

Thanks for the info, I'll try it out once I get to the PC with source games.
Is it triggerable? Or must I parent it to an almost instant moving door to disable it?

I think I can easily find a ForceField which kills you but leaves objects trough, such as in the Portal Flash Version Map Pack.
But if anyone knows how to do so without looking up anything, do throw it in.

For the forcefield that hurts the player, create a trigger_hurt with a very high damage value, say 20000. That should kill anyone, unless they are travveling the speed of light, then they could get through alive. In that case, a small playerclip brush will stop them.

How's that func_brush gonna know how to stop anything but the player?

I'm not sure if this works, I'm just making a guess.

Bulska wrote:
tie them to a func_brush that you can enable and disable.

How's that func_brush gonna know how to stop anything but the player?

appunxintator is right. I just realised that I made a mistake. Tying to a func_brush will only work for the forcefield that stops the player only. The forcefield to stop anything except the player cannot be tied to a func_brush, as it is already tied to another entity. Use appunxintator's method to get it to work fully.