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*.skl | *.skls

About​

These files store skeleton animations. The format for storing animations in *.skl/*.skls is similar to the format of animations embedded in *.object Anomaly Modding Book files. Animations are stored in uncompressed form. Bone motion data are stored lossless when exported from a 3D editor. These formats are designed for X-Ray SDK. They are used as source files that are compiled into compressed formats for the game.

Technical information​

  • Animations are stored as 3 animation curves for position and 3 curves for rotation in Euler angles Wikipedia with ZXY axis order
  • A *.skls file can store one or more animations
  • A *.skl file can store only one animation
  • Each animation has game parameters Anomaly Modding Book.
  • Skeletal animations do not support Scale keys

Interpolation types​

Programs​

Blender X-Ray Addon

Blender X-Ray is an addon for the Blender that is designed to import/export 3D models and animations from S.T.A.L.K.E.R. (X-Ray Engine).

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IX-Ray SDK

SDK or Software Development Kit helped the developers of the original trilogy and the modders to develop the game itself.

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Sources​

Blender X-Ray Addon Wiki GitHub