text: #include <vector>
  
  using namespace std;
  
  
  class actor
  {
  private:
      int interval;
      vector<float> bbox;
      static void  * moveRoutine(void *);
      static vector<float> curveMove(vector<float>, vector<float>);
  
  public:
      actor(int, vector<float>);
      ~actor();
      void move(int);
  };