func_clip_vphysics and block bullets

Well, first of all you don't need to make a block bullets brush an entity, it's just the texture. Second, I'm not sure it'll have the desire effect. Block bullets is just an invisible brush that doesn't seal your map or block visibility, unlike player clip, it doesn't allow projectiles and bullets to travel though, making it useful in some situations. However, it looks like you want to make a spawn room that enemies can't fire into? If so you'll want to create a func_spawnroom and func_spawnroomvizualizer brush entities. stretch the func_spawnroom over every where you want your team to be able to change class without dying. In the object properties menu select the desired associated team and name it something. Then cover the door way with the func_respawnroomvizualizer and, in the object properties menu, set the associated respawnroom to the one you just created. Enemies and all enemy fire shouldn't be able to pass the func_respawnroomvizualizer.

Hope I helped in some way.

Edit: I'm dumb, respawnroomvisualizers do not actually block enemy fire.

Cytosolic said:

Enemies and all enemy fire shouldn't be able to pass the func_respawnroomvizualizer.

Click to expand...

This isn't actually the case. Respawn room visualizers only block enemy players. While there is some roundabout way to block bullets/projectiles and not players, there are a couple of reasons why I don't recommend doing that:

1. No other official TF2 map does it (it would break player expectations), and
2. It blocks bullets both ways, meaning players wouldn't be able to fend off spawncampers from the inside.

Instead, TF2 uses solid doors that only open from the inside, one-way windows, and spawn points placed far away from the exits to keep players safe from enemies. This guide explains how spawn rooms are normally built.

One-way windows are just brushes with an opaque texture on one side and a transparent texture on the other. So, for example, you could use lights/gradient_window_warm001 on the outside and glass/glasswindow001a on the inside, and only players on the inside can see through.