addSpriteSheet(key, url, data, frameWidth, frameHeight, frameMax, margin, spacing)
Add a new sprite sheet in to the cache.
Parameters
Name Type Argument Default Description key string The key that this asset will be stored in the cache under. This should be unique within this cache. url string The URL the asset was loaded from. If the asset was not loaded externally set to null. data object Extra sprite sheet data. frameWidth number Width of the sprite sheet. frameHei