Keyframes
The animation system has been designed as a natural extension of the S2 ENGINE architecture, based on nodes, that allows you to organize objects in a hierarchical manner. The current version allows you to have keyframed animations applied to both skinned models (skin / bone based) and hierarchical models (i.e. composed of meshes arranged in a hierarchy).
In the editor, you can mark some of the animation frames as keyframes. During the execution of the animation, when it reaches a key frame, the animated object receives a message: It 's possible to process the message to run, for example, a sound, activate a particle system, etc. ...