The asset classes the game can use. The configuration picks from them by
assetName.
The component classes the game can use. The configuration picks from them by
componentName.
The game configuration: scenes, templates, systems, assets and global options.
OptionalresourcesExtra data for systems, keyed by systemName. A system gets its entry in
options.resources. For example, BehaviorSystem gets the behavior
classes this way.
The system classes the game can use. The configuration picks from them by
systemName.
Options for Engine.