Editing in Unreal 3
These tutorials are strictly for use with UT3. Mapping is similar previous versions of the engine, but there are a some differences.
A first functional map in unreal tournament 3.
Please note that the new unreal editor is quite similar to the old one. Which means that if you have experience with the old one, you will quickly get the
hang of this. Also this means that tutorials for UT04/03 will sometimes help for UT3. If you follow these steps you will learn the editor and have a basic map
ready in no time 
Creating A Space
Creating A Space
The most important things with a map is that there is actually a subtracted space where the players can move around.
By following this tutorial you will learn how to create such a space in two different ways.
Good to know tip:
A player is about 96 units tall, and 50 units wide.
First of all you probably already have your editor open and are ready to try the things you will be told to here.
If not try to look for your UT3Editor in: Start - All Programs - Unreal Tournament 3 - Unreal Tournament 3 Editor if you cant find it, try looking in the root folder of your installed game.
1. Click File - New (or click on the icon of a blank piece of paper) in the upper left corner of your screen.
2. Now you will have to choose the geometry style of your level. Additive means that there is already a huge space and you build your map in it, so if you want this style just "Click additive and OK" and you have a subtracted space. In other words, for additive levels you would now already have a subtracted space and you are done. (Still even in additive levels you most likely need to know how to subtract spaces, so I would recommend following the subtractive way of this tutorial.
If you want a subtractive level where everything is already a huge filled space and you create rooms inside. This may seem like a worse way but it can be quite useful most of the times, but is still depending on the map you want. Click Subtractive and OK.
3. Now that we have a new map open you right click the "Cube" icon, in the left menu showing many fancy green icons.
4. Then now we can set the size on our cube in the X, Y, and Z axis.As for now we can enter in "X=512, Y=512, and Z=256" then click "Build"
5. now click CSG:Subtract. Find it in the left menu.
6. Now your 3D view should have been surrounded by some chess looking thing. If not, you can attempt to move your 3D camera, using the mouse. Rick click=Forward and turn. Left Click=Turn all directions. Both=Move camera up/side. Move a little around in your hollow cube and try 2 get the hang of it.
Congratulations, if you did this correctly, you now have a hollow space where you can fool around.
Adding A Brick
Now I will assume that you have completed part 1 and that you have a space ready in your Editor.
1. Simply right click "Cube" or any other brushes that you wish for from the side bar.
2. Fill in the required information for the brush.(Just experiment with different values)
3. Left click "Build" and your red wire frame brush should instantly change its looks to your wanted brush.
4. Now you probably would love to move this brush into your special spot in the room. 
Left click on the wire frame model, so that it will be bright red. Hold down
"Ctrl" while you press and hold Left mouse button, Right mouse button or Both mouse buttons.
Now try to move your mouse and see how this wire frame model is moving around. Try to see if you can move your brush to your heavily desired place.
5. Press "Add" if you want the space inside your brush to be filled.
"or" Press "Subtract" if you want the space inside your brush to be removed.
Congratulations, if you did this correctly, you now have added a brick or some other brush of your choice into the map
Creating Light
In UT3 adding a basic light is quite simple(Because basically you just need step 1 and 2.).
To do this you will need to have a subtracted space ready.
1. Right click inside your map. (Where you want it, or move it around later)
2. At the menu that you get open click
Add Actor - Add Light (point)
3. If you cannot see the difference, maybe you always have unlit render view?
Above the 3D view window you will find some small icons. when u hold over them you will see what they do.
By choosing "unlit" you will always see full light in your map. (From the editor view only off course)
By choosing "lit" you will see how the map really looks when you have rendered lightning.
Select the lit view for now as you are adding light for now. When doing other stuff I recommend using lit view(Choose your self)
But if you are having a slow system look for unlit movement to prevent lagging.
Congratulations you no longer need to stumble in the darkness.
If you want to get more Advanced:
To change the light properties:
Right click on the light and select "Point Light Properties"
- Light - light Component - Brightness (This will change the strength on your light)
- Light - Light Component - Radius (This will change the distance before your light is faded away)
- Light - Light Component - Color
Left click on the looking glass on your left.
or Right click on the light color bar(which is probably still white).
Good to know: Grayness will make the lights color weaker. Adding darkness will make the light more dim(I recommend changing brightness for this feature).
Congratulations you can now dance in your disco lights!
