trianglePuzzle.h

// This is a class which implements those notorious little golf-tee puzzles
// found at certain country-themed restaraunts.
// Revision: $Revision: 1.1 $
// Change Log
//   $Log: trianglePuzzle.h,v $
//   Revision 1.1  2016/03/17 16:01:01  pngwen
//   Initial revision
//

#ifndef TRIANGLEPUZZLE_H
#define TRIANGLEPUZZLE_H
#include <vector>
#include "widget.h"
#include "peg.h"

class TrianglePuzzle : public Widget
{
public:
  //Construct a triangle puzzle with a x, y coordinate for the upper
  //left hand corner.  (As laid out on a 9x27 grid)
  TrianglePuzzle(int _x, int _y);

  //Construct a triangle puzzle in the center of the screen
  TrianglePuzzle();

  //Volguus Zildrohar the traveler has come!
  ~TrianglePuzzle();

  //display the puzzle
  virtual void display();

  //select a given peg
  virtual void selectPeg(int px, int py);

  //move the selection up a row
  virtual void up();

  //move the selection down a row
  virtual void down();

  //move the selection right a column
  virtual void right();

  //move the selection left a column
  virtual void left();

  //perform a part of a move.  Returns true if valid, false if invalid
  virtual bool move();

  //reset the puzzle back to its starting state
  virtual void reset();
  
private:
  std::vector<std::vector<Peg *> > pegs; //the pegs in the puzzle (of course)
  int cx, cy;  //cursor position
  int mx, my;  //position of the selected peg for the move
};

#endif