The first thing we need to do is build our level. We will do this with the help of BSP brushes. We talked briefly about BSP brushes in the second chapter, but now we will talk about them in a bit more detail. BSP brushes create volumes and surfaces for your level. It provides a quick and easy way to block out your level and to make quick prototypes. You can even create the entire level itself using BSP brushes. If you do not have access to 3D modelling software, such as Maya or 3DS Max, to create assets for your level (such as walls, ceilings, and so on), then you can use BSP brushes instead to create your level. The BSP brushes can be selected in the Modes panel, in the Place Mode.
Default BSP brush shapes
As mentioned in the previous ...