Subtractive Workflow

Instead of building rooms out of walls, you can start from solid space and carve the level out of it, the way many classic level editors work: a large additive brush is the rock, and subtractive brushes are the rooms and corridors.

• Each subtractive brush or generator cuts away everything inside it, and its faces become the walls, floor and ceiling of the space it carves out.
• Rooms that overlap or touch simply join.
• The carving is non destructive: you can move, resize or remove a room at any time.

See also Operations.