ANCS (File Format)

The ANCS format defines characters for animation in Metroid Prime 1 and 2. Starting in Metroid Prime 3, it was replaced by the CHAR format. The extension stands for ANimation Character Set.

AnimationAABB Indexed
The only difference between this and the previous AnimationAABB is the fact that animations are referenced by index, rather than by name.

MetaAnimation
MetaAnimations can be one of five types, and may contain children.

Blend
Blend's structure is shared between Blend and PhaseBlend, with the only currently known difference being the animation type value.

Random
Random may contain one or more children in an Animation -> Probability pair following this structure:

Sequence
Sequence is a fairly easy to understand type, it simply plays a list of animations in succession as each animation finishes

MetaTransition
Meta Transitions can be one of four types, and may contain animations.

AdditiveAnimation
Describes how animations are additively blended together.

Half Transition
A half transition is very similar to a regular transition, but has less configuration information, any other differences are currently unknown