Hi. It's me again, your resident question asker!

I've gone through the tutorial about creating a minefield, but when I texture the brush with trigger and then hit escape to de-select it, it actually dissappears. I also tried just having a grass textured brush and doing the steps (misc->trigger_multiple; the entity info) and once I hit escape after doing the steps, it dissappears too. I thought maybe it was just doing that in Radiant and it would be fine in the game, but I compiled (for 45 mins!) and the loaded it up and the brushes are actually not there....

Am I doing something wrong?

Press "F" and just check everything. I myself don't have "Blocks" or "Names" checked, just my preference. Once you do that, click update. You should be able to see them.

I don't know about the in-game problem that much.

Thanks for the reply Spik3d!

I think I may have figured it out. Trigger wasn't showing in Radiant because it was set to not show clips, etc. So Now I can see the triggers. As for in game, I thnk I was going about it all wrong. I was making the ground a trigger brush, but instead I think it should be a "wall" that gets walked through to trigger an event. The game doesn't render triggers in a visible manner so thats why they weren't there in in-game. I'm compiling again right now to test out my new theory. I'll post back results...

I did figure it out. One thing that should be clarified in the tutorial is that the brush has to be sizable in all 3 dimensions. ie, a tall "wall" style trigger brush that is only 8 units thick is not enough. You'll hear the "click" of tripping a mine, but once you leave the Trigger space, it won't do anything. If you make the wall 200+ units thick, it gives enough room for the person to enter into it and stay in it long enough to blow up.

My rule of thumb for this is to make it twice as tall as the player, as long as needed, and 200+ units in depth to give enough room for the player to not be able to run all the way through the brush.