how do you mirror maps?

How do you make it so that both halves of your map are mirrored (like in KotH Viaduct)?

Thanks for any help in advance.

 

And if the map is a-symmetrical use ctrl I to change the orientation.

 

Make a massive skip brush under the map that is centered exactly at the middle of the map. Select what you want mirrored + the skip brush, copy, paste special and rotate 180°.
Repeat for everything added.

 

I'm almost at the point of doing this myself, what about after? I'm concerned with doors and spawn areas - these entities are named "red_x" - any way to change these names or at least list the named entities on the map?

 

Or CTRL + L for horizontal flip.. or Tools > Flip Objects

 

Edit > Replace. Then you can replace the contents of everything or anything you have selected.

 

That's not asymmetry :facepalm:

 

Use CTRL-M, then put 180 into the bottem box.

 

Numerical transforms are a lifesaver.

 

select all the entities > right click > paste special > check the box near the bottom "make names unique"
this will affect output the same and save you a lot of work

 

Will this retain references? That is, if entity1 gives entity2 as its parent, will that reference be retained? That is, if the system changes entity2 's name to entity2changed the parent of the entity1changed will refer to entity2changed.

 

FYI, Hammer as an tickbox option somewhere to restrict all rotations (done by dragging the handles in a 2d view using the mouse) to 15-degree increments unless you hold down ALT. Very handy.

 

yes, so long as all entities mentioned are copied

 

Cool, cool beans. Thanks a lot, very useful to know that.

 

I wish i had known this a long time ago

 

One thing that irks me about numerical transform is how it rotates objects around the center of their bounding box as opposed to their origin. Would be a nice option to have.

 

I think replace does the same thing.

 

Don't forget to turn off vertices and model wireframes, lest your efforts be dampened by lag. I once spent 3 days flipping a map because it was slightly off.

 

:/