#include "std_lib_facilities.h"
#include "Simple_window.h"
#include "Graph.h"


const int button_size = 30;
const int xoff = 0;
const int yoff = 0;
const int gametiles = 10;

Vector_ref<CoolButton> buttons;
Text *t;
Rectangle *r;

string stringForInt(int i)
{
  stringstream ss;
  ss << i;
  return ss.str();
}

struct CoolButton : Button
{
   int col;
   int row;
   string hidden;
   CoolButton(Point xy, int ww, int hh, const string& s, Callback cb,int r,int c) :Button(xy,ww,hh,s,cb)
   {
       col = c;
       row = r;
   }

  void attach(Window& win)//this makes a button save itself in the address of its callback
  {
       pw = new Fl_Button(loc.x, loc.y, width, height, label.c_str());
       pw->callback(reinterpret_cast<Fl_Callback*>(do_it), this);
       own = &win;
  }
};

void try_move_to(int x, int y)
{
   r->move(x*button_size - r->point(0).x + button_size/2, y*button_size - r->point(0).y + button_size/2);
}

int num_clicks=0;
void cool_callback(Address,Address addr)
{
   num_clicks+=1;
   CoolButton *b = static_cast<CoolButton*>(addr);
   cout << "row " << b->row << endl;
   cout << "col " << b->col << endl;
   try_move_to(b->row, b->col);
   t->set_label(b->hidden+" steps away");
   if(b->hidden == "win")
   {
      for(int i=0; i<buttons.size(); i++)
      {
         buttons[i].hide();
      }
      t->set_label(b->hidden+" in "+ stringForInt(num_clicks) + " steps");
   }
   b->hide();
   Fl::redraw();
}


int main()
{
    Window win(Point(100,200),button_size*gametiles,button_size*gametiles,"Buttons Demo");
    r = new Rectangle(Point(button_size/2,button_size/2),button_size/2,button_size/2);
    //r.set_color(Color::green);
    win.attach(*r);
    t = new Text(Point(50,50),"Click around");

    srand(time(0));//makes random really random
    int goal_x = rand()%gametiles;
    int goal_y = rand()%gametiles;
    for(int x=0;x<gametiles;x++)
    {
        for(int y=0;y<gametiles;y++)
        {
          CoolButton *b = new CoolButton(Point(xoff+button_size*x,yoff+button_size*y), button_size, button_size, "", cool_callback,x,y);
          if(x == goal_x && y == goal_y)
              b->hidden = "win";
          else
              b->hidden = stringForInt(abs(goal_x-x)+abs(goal_y-y));
          win.attach(*b);
          buttons.push_back(*b);
        }
    }
    win.attach(*t);
    t->set_font_size(30);
    return gui_main();
}