UDK tutorial series. In the following set of tutorials we will begin to cover how to create a simple room and simple environment from start to finish.
First three parts of many we will begin with BSP Brushes. Blocking in our simple room environment and quickly testing in game.
In the following tutorial, you will learn:
If you are completely new to UDK, start with these three tutorials. They will help you to catch up and then come back here and continue with BSP brushes and the rest of the tutorials.
Red builder brush is the template out of which bsp brushes are created inside UDK. Red builder brush doesn't show up in game, and it is simple where additive, subtractive and other volumes could be created from.
I say could be, because until you add something where the red builder brush is, it simply is a place holder for a future brush or volume.
Shortcut: B = hide on/off red builder brush
Various brushes are available to create BSP geometry. Left Mouse Click on any of the icons and this will update the red builder brush. This will not create bsp geometry just yet. But it will set the template to create the brush from it.
Right Mouse Click on any of the icons, will bring up the properties box. Here you are able to change values and how each brush looks.
Once you have a template positioned, sized and scaled. You can then add the brush to your level.
Shortcut: CSG Add = Ctrl+A
Character height in UDK is 96 units tall.
Placing a reference where you can judge how large your environment is, will help you to keep your level on scale.
Open the Content Browser and place a Skeletal Mesh into your level. This will be your human reference scale.
Click All Assets and type in search: SkeletalMesh.
Place it in your level by Left Mouse Click and Drag into your scene.
If you have a bsp brush off the grid, there is a very simple solution to get it back on the grid.
Right Mouse Click on single vertex of the brush and it will snap to the grid spacing.
Instead of using brush properties to size the scale of your brushes, there is a quick and more efficient way of doing so.
Geometry Tool Mode:
Select the brush and click on Geometry Tool Mode. Here you will be able to resize the brush faces and vertices much easier.
You can also move each face of the brush. In perspective view, you are able to select a face on the brush while in Geometry Mode.
If you used Geometry Tool Mode to resize your bsp geometry, you will not see the changes in perspective viewport in lit/unlit mode.
That is because anytime you change your bsp brushes, dupliate them or move them, you need to Build Geometry to see the changes.
Top tool bar, click on Build Geometry for Visible Levels.
You can subtract geometry from additive brushes in your level. This offers a quick way to block in your environment and carve interiors out.
Remember, subtracting only works if you subtract from additive geometry; already added brushes.
Use the red builder brush, position the brush inside additive brush.
Once you have a template positioned, sized and scaled. You can then subtract the brush from additive brush.
Shortcut: CSG Subtract = Ctrl+S
I can't stress enough how important it is to stay on the grid. This will make your job a lot easier down the road.
Make sure you have grid snaps turned on, and you are using large enough grid spacing during the block in stages.
You will find the options on the bottom right of UDK interface.
Here are the brushes on the grid, snapped. Nice and clean.
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