Level Design Introduction/Getting Started (Portal 2)
첫 번째로 해야할 것은 해머를 실행하는 것입니다.
Steam 윈도우를 열고 Tools 탭을 선택한 뒤 Portal 2 Authoring Tools를 더블 클릭합니다.
만약 Authoring Tools을 처음 실행하는 경우 다운로드하고 설치하는 시간이 소요됩니다.
Hammer level editor를 시작하기 위해서 Hammer World Editor를 더블클릭 해주세요.
해머의 로딩이 끝났다면 File메뉴에서 New로 가서 새로운 레벨을 시작할 수 있습니다.
4개의 편집 영역 창이 나타날 것입니다.

Hammer Editor interface layout
Here is a basic description of the Hammer interface. You will learn how to use these items throughout this tutorial, so don't worry about learning about how they all function quite yet.
Map Views and Operations bars
These bars across the top of the window contain a variety of buttons to control the viewing of objects in the map, as well as controls for the grid and snapping tools.
Tools bar
The Tools bar switches the editor to different modes that allow you to select, build, place, texture, and manipulate different objects in your level.
Selection Mode bar
The Selection Mode bar switches between modes of selecting objects in the map:
- Groups — You will select the whole sets of objects that have been grouped together.
- Objects — You will select an entire object even if it consists of more than 1 component.
- Solids — You will select individual components even if it has been joined with others to make one object.
Texture bar
The Texture bar allows you to see the currently selected texture and to browse for other textures by going into the Browse... button.
Object bar
Used to place objects in your level that are not simple geometry. While brushes are the basic building blocks of levels, entities placed with the Object bar are pretty much everything else. You can place lights, props (models) and items using the Object bar.
VisGroups bar
VisGroups are a way to organize your level. You can place any type of object into VisGroups and label them so that you can hide them or reveal them as a group. This allows you to see what you're working on in a much cleaner way than leaving everything visible.
Status bar
The strip along on the bottom of the interface gives valuable information while you're editing, such as the size of the selected objects and the current grid settings.