text: #pragma once
  #include "Box2D/Box2D.h"
  #include "GL/glut.h"
  #include "setting.h"
  
  class Wanderer
  {
  public:
      Wanderer(b2World* world, const b2Vec2 velocity,
          const b2Vec2 head_pos, const b2Vec2 LWH, const b2Vec2 LR);
      void Render();
      void Wander();
  
  private:
      bool IsInsideOfMap();
  
      body_ptr head_;
      b2Vec2 LWH_, LR_;
  };