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Quick definitions of important words and concepts.

GECK Terms[edit | edit source]

Actor[edit | edit source]

  • An Actor is a game object that uses AI and acts in the world on it's own. The Player reference, Creatures and NPCs are all considered Actors. See also: Actor Functions

Base Object[edit | edit source]

  • Base Objects are any objects defined in the Object Window, as well as some objects in the menus in the main GECK toolbar. Some of these objects serve as template objects for References.

Base ID[edit | edit source]

  • A BaseID (or Base ID) is a FormID assigned automatically to an object by the GECK when a new object is created in the Object window. The Form IDs listed in the Object window are Base IDs. A Base ID is only associated with an object template in the editor, never with an instanced object in-game.

EditorID[edit | edit source]

  • The EditorID (or Editor ID) of an object is a name given to an object by a GECK user to uniquely identify that object for use in the GECK. This name does not appear in-game, but is used in scripts.

FormID[edit | edit source]

  • The FormID (or Form ID) of an object is the unique numerical identifier for that object, in hexadecimal. This is the 'short version' used by the engine while the game is running. Note that in the GECK, the term Form ID may be used in one of two fashions: as the Base ID of an object template, and as the Reference ID of an instanced (placed) in-game object. The Form IDs in the Object window are Base IDs. The Form IDs in the Cell View window are Reference IDs.

LOD[edit | edit source]

  • LOD is Level Of Detail. As an object is farther away, it has less detail. (ex: close range, an object may be 200 pixels; farther away, it may only be 50 pixels. The LOD has been reduced.)

Record[edit | edit source]

  • A Record is any discrete unit of data that gets saved to an .esp file. Base Objects and References are both Records, as are other things such as Game Settings.

Reference[edit | edit source]

  • References are instances of Base Objects that have been placed in the game world via the Render Window. References added to cells also appear in the Cell View Window. References inherit most of their properties from the Base Objects that they are templated on.

Reference Editor ID[edit | edit source]

  • A Reference Editor ID is a name given to a specific instance (Reference) of an object placed in the Render Window by a user. Reference Editor IDs are used in scripts to execute commands that affect only that instance of an object.

Reference ID[edit | edit source]

  • A Reference ID is a FormID assigned automatically to a Reference by the GECK when an object is placed in the Render Window. Reference IDs are required to uniquely identify each instance of an object in-game. The Form ID column of the Cell View window lists Reference IDs.

File Types[edit | edit source]

BSA File[edit | edit source]

  • BSA (Bethesda Softworks Archive) are archives that contain resource files (meshes, textures, sounds, etc.). The GECK does not allow creation or editing of BSA files, but other tools do.

DDS File[edit | edit source]

  • DDS, short for Direct Draw Surface, is the file format used by Fallout 3 to store textures and images. One free .dds editor is Paint.NET, and plugins are available for most image editing programs.

NIF File[edit | edit source]

  • NIF, short for Net Immerse File, is the file format used by Fallout 3 to store models, also known as meshes. NIF files can be worked with using NifSkope and NifTools.
  • Note - The NIF files used in Fallout 3 are a different format than those used in Oblivion.

OPL File[edit | edit source]

  • OPL stands for Object PaLette and this file format is used only in the G.E.C.K. to create an Object Palette, a collection of objects that speed up a process of building exterior worlds and interiors.