METHOD(Keyframe, addEasing, entity(entity, float, float, float(float, float, float, float)));
METHOD(Keyframe, addAnim, void(entity, entity));
METHOD(Keyframe, calcValue, float(entity, float, float, float, float));
METHOD(Keyframe, addEasing, entity(entity, float, float, float(float, float, float, float)));
METHOD(Keyframe, addAnim, void(entity, entity));
METHOD(Keyframe, calcValue, float(entity, float, float, float, float));