#include "library.h"

struct actor
{ double xpos, ypos, speed;
  int color;
  string phrase; };

void print(actor a)
{ cout << "x=" << a.xpos << ", y=" << a.ypos << ", spd=" << a.speed << "\n"; }

void draw(actor ac)
{ set_pen_color(ac.color);
  draw_point(ac.xpos, ac.ypos); }

struct universe
{ int width, length, edge;
  actor boy, bull, tree; };

void print(universe uni)
{ cout << "field width= " << uni.width << ", length= " << uni.length << "\n";
  cout << "Boy: "; print(uni.boy);
  cout << "Bull: "; print(uni.bull);
  cout << "Tree: "; print(uni.tree);
  cout << "\n"; }

void draw_actors(universe uni)
{ draw(uni.bull);
  draw(uni.boy);
  draw(uni.tree); }

void draw(universe uni)
{ set_pen_color(color::green);
  move_to(uni.edge, uni.edge);
  draw_to(uni.edge+uni.length, uni.edge);
  draw_to(uni.edge+uni.length, uni.edge+uni.width);
  draw_to(uni.edge, uni.edge+uni.width);
  draw_to(uni.edge, uni.edge);
  draw_actors(uni); }

void initialise(universe & uni)
{ uni.bull.phrase = "Boy Eaten!";
  uni.bull.color = color::red;
  uni.boy.phrase = "I'm safe";
  uni.boy.color = color::blue;
  uni.tree.phrase = "Trouble";
  uni.tree.color = color::green;

  ifstream datafile;
  datafile.open("setup.txt");
                               /* This is what's in setup.txt
                                     field 600 400
                                     edge 50
                                     bull 200 0 10
                                     boy 200 400 7
                                     tree 500 200 0 */
  while (true)
  { string id;
    datafile >> id;
    if (datafile.fail())
      break;
    if (id == "field")
      datafile >> uni.length >> uni.width;
    else if (id == "edge")
      datafile >> uni.edge;
    else if (id == "bull")
      datafile >> uni.bull.xpos >> uni.bull.ypos >> uni.bull.speed;
    else if (id == "boy")
      datafile >> uni.boy.xpos >> uni.boy.ypos >> uni.boy.speed;
    else if (id == "tree")
      datafile >> uni.tree.xpos >> uni.tree.ypos >> uni.tree.speed;
    else
      cout << "Error '" << id << "' in file\n";
  }
  datafile.close();
  cout << "finished reading\n"; 
  uni.boy.xpos += uni.edge;
  uni.boy.ypos += uni.edge;
  uni.bull.xpos += uni.edge;
  uni.bull.ypos += uni.edge;
  uni.tree.xpos += uni.edge;
  uni.tree.ypos += uni.edge;
}

void main()
{ 
  universe u;
  initialise(u);
  print(u);
  make_window(u.length+2*u.edge, u.width+2*u.edge);
  draw(u);
}