+ virtual void getBonePosition(const std::string &bone, v3f *position, v3f *lotation)
+ {}
+ virtual void setAttachment(int parent_id, const std::string &bone, v3f position, v3f rotation)
+ {}
+ virtual void getAttachment(int *parent_id, std::string *bone, v3f *position, v3f *rotation)
+ {}
+ virtual void addAttachmentChild(int child_id)
+ {}
+ virtual void removeAttachmentChild(int child_id)
+ {}
+ virtual std::set<int> getAttachmentChildIds()
+ { return std::set<int>(); }