1. Marshall resources.
2. Edit the world.
3. Process and run the world.

You make use of models, sounds, sprites, and textures in building your world. Except for sprites, these resources are not created in DEdit but you can import them, and in some cases modify them, in DEdit. Their use is described in the Resources section of this document.

You create new worlds using DEdit. In these worlds, you define the geometry and place objects. The geometry of a world is made up of the various surfaces and solids that you create. Your users move their players through this geometry, and along the way they encounter any objects you have placed in the world. Creating and modifying a world is described in the World Editing section of this document.

Before you can run a world with LithTech, you must generate a .DAT file from the .ED file (the world file as used by DEdit). In a .DAT file, much of the information required to display the world is pre-calculated, such as the effect of ambient light on surrounding geometry. This allows LithTech to support the highest possible frame rate when your world runs. Processing and running a world are described in the World Menu section of this document.

To start DEdit, click the Start button, point to Programs, point to LithTech Demo, and then select DEdit. The DEdit window appears. Because no world is open, the area to the right is empty. On the left side of the application window is a tabbed, dockable list dialog called the Project Window. Its use is described in the following section.