I just thought of an ingenious way to allow for mirrors in all editions, even standard. It does have it's limitations though, but it's much better than a mere screenshot used as a texture and much more accurate. It still won't, however, be like real mirrors, but very considerable. This only works with flat mirrors and not a room filled with them (thus, for a typical bathroom mirror, this would work). Here's the trick:

1. Where a mirrored block would normally be, have an opening that goes into the wall.
2. Recreate the scene that would normally show up in the mirror having depth. Only, scale it down, way down. The smaller the mirror, the smaller the scale should be. Use lower-poly models than those in the scene. Make this replica passable so collision isn't run on it to speed up the engine.
3. For the player, just have a duplicate in this area on the "mirror" and, of course, scaled down accordingly.
4. To prevent weird things from happening, put an invisible barrier right where the mirror would normally be to prevent the player from getting in it. To avoid seeing the "special effect" when in a remote area, make the mirror scene invisible and passable.

Does this work for you? It should work even in standard edition even in very old releases like A5 or A4.

Edit: I haven't tested the trick in Gamestudio, but from running simulations in my mind game, it should certainly work.

thes pretty clever but that idea was kind of suggested before for shiney floor surfaces. it suggested making an upsidedown version of the room with collisions and stuff and having the floor slightly transparent =)

I did a search for "mirror" in this forum, but nothing came up relating to it. It could've been one of those deleted posts. I set the search range to 1 year and it turned up 27 results....

There had been already a complete tutorial of that including demolevels. Perhaps, it is at Achnex Resources? - Nope, looked for it. But, there are two others!

Better set search range to "older than".

Even in AUM could be one.

Yeah...I still got the tut on my HD...was for A5 written by: Keith Blount AKA Ambit. PM me if I should mail it to you!

http://www.rumramruf.com/3dgs/mirrors/index.html

That's it!

OT: Does anyone know where Keith Blount AKA Ambit is?

It is a great loss to have him not around in the community anymore!

I agree. It really is. He's done some pretty great things for us in the past.
Here's a link to one of his homepages:
http://www.rumramruf.com/3dgs/

Don't laught , if the sceen is detailled, you'll have 0.001 FPS ...
No this method is not good ,and use real mirrors is a lot better and
a lot more less CPU consuming.

You want real mirrors use Ogre3D, irrlicht ,TV3D or Torque or another ...

i'll hope Conitec will put render to texture for commercial editions ...
caus it's a such basic 3D thing

I agree "real" mirrors are best but faking them with the method above if built correctly will not give you as big of a hit as you might think.
Here's a shot of a test level I made a while back using Keith's method: