Assignment 3.0

Skeletal animation sub-system

Features

• It allows the user to import fbx files that contain animations using Assimp.
• The user can create clips of the imported animation and set the clip on loop.
• He can also create an asset called Animation Controller. A state machine that allows the user to create different states and transitions between them. He can create/modify the name/select a clip resource/Delete a state, and Create/Set the trigger/Set the blend value/Delete a transition.

System in-depth

• It reads animations and bones from a fbx file, then we link the bones to a mesh so we can modify it through skinning.
• Then, when a animator component is attached to a game object and a Animator Controller to the component, the object bones will be updated from the animation key values in each frame when we hit play.
• On update, every key frame for every bone, an update transform is called which interpolates the current key values with the next key values of every transform component (position, rotation, scale).
• At the end of the animation, if the clip is setted to loop it will start again.
• If theres a transition to another animation and the transition is triggered, both animation transforms will blend for smoother results.