The “AnimSprite” class does just that. You can load a sprite sheet and set the frame rate, specify which frames play in which order, etc. Sorry the example file is not helpful, I never updated it to demonstrate animated sprite frames… will try tomorrow night, if that interests you.
Ah, ok. In 3D, the most common is to create your animation within the 3D application you’re using and simply export it to a format that supports animation. Swapping the models is not a usual technique.