Introduction to Gamebryo

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Introduction to Gamebryo

• File formats, shipped samples, tools and utilities

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File Formats Nif File

• Main Gamebryo file format is the NIF file
• Can contain geometric, embedded texture
  embedded animation data
• Default viewer is the Asset viewer

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File Formats kf kfm files

• kf file or key frame file
• Allows you to extract animations into separate
  files, (usually character animations)
• Kfm or key frame manager file
• Mainly used by animation tool to set how
  individual kf blend together

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File formats gsa

• Gsa format
• Scene designer file format
• Xml style format
• Giving information about placement of multiple
  nif files in a scene using ascii file format e.g.
  transformation, rotation and scale

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Gamebryo folder structure samples

• Ships with a lot of samples

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Samples Demos

• Demos
• Small applications that show how to do one type
  of thing e.g. picking and cube maps

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Samples Full demos

• Full demos
• More game like demos showing combination of
  effects

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Samples Artist examples

• Models 3Ds Max and Maya
• Very specific examples showing how to do things
  e.g. decal maps

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Samples Animation samples

• Shows how to set up animations and how to use kf
  and kfm files

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Samples Scene Designer

• Scene designer examples

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Samples Scene Designer assets
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Gamebryo Tools and Utilities

• AssetViewer
• AnimationTool
• SceneDesigner
• Font Creator

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Asset Viewer
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Animation Tool
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Animation Tool

• Transitions
• Blending
• delayed vs immediate
• Cross-Fading
• Morph
• Chain
• Groups

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Using Animation in Gamebryo

• Sequence IDs
• NiActorManager

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Scene Designer

• Framework for level editing
• placement of .nif, .kfm assets
• assigning arbitrary properties
• preview including lights, shaders, particles

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Scene Designer

• Abstract interfaces for scene graph objects
• contain scene graphs, actors, lights, cameras
• contain arbitrary sets of properties
• change tracking, support for undo

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Scene Designer tradeoffs

• Adding more entities
• increases flexibility in scene design
• increases ease of art editing
• increases runtime rendering cost
• Plugins can automate art tasks

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Font Creator

• Converts Windows fonts to Gamebryo .nff format
• Unicode
• NiFont has a given face, point size and style
• Unicode support

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Introduction to Gamebryo

• File formats, shipped samples, overview of tools
  and utilities