/****************************************************************************

 Copyright (C) 2002-2008 Gilles Debunne. All rights reserved.

 This file is part of the QGLViewer library version 2.3.1.

 http://www.libqglviewer.com - contact@libqglviewer.com

 This file may be used under the terms of the GNU General Public License 
 versions 2.0 or 3.0 as published by the Free Software Foundation and
 appearing in the LICENSE file included in the packaging of this file.
 In addition, as a special exception, Gilles Debunne gives you certain 
 additional rights, described in the file GPL_EXCEPTION in this package.

 libQGLViewer uses dual licensing. Commercial/proprietary software must
 purchase a libQGLViewer Commercial License.

 This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

*****************************************************************************/

#include "jeu.h"

bool Jeu::needDrawing(int i)
{ return tab[i].empty; }

void Jeu::placePiece(int select, Piece *p)
{
  // on verifie que la piece n'ai pas été déja placée autre part
  for(int i=0; i<16; i++)
    if(tab[i].piece==p) {
      if(i==select) return; // la piece a déja été placée au bon endroit
      // si oui, on l'enlève
      tab[i].empty=true;
      tab[i].piece=NULL;
    }
  // on place la piece
  tab[select].empty=false;
  tab[select].piece=p;
}

// Vrai ssi les 4 pieces ont unbe caractéristique commune
bool Jeu::caracCommune(Piece* pieces[4])
{
  for (int i=0; i<4; ++i)
    if (!pieces[i])
      return false;

  // sinon on teste les caracteristiques communes
  // la taille
  if (pieces[0]->getTaille()==pieces[1]->getTaille() &&
      pieces[0]->getTaille()==pieces[2]->getTaille() &&
      pieces[0]->getTaille()==pieces[3]->getTaille()) return true;
  // la couleur
  if (pieces[0]->getCouleur()==pieces[1]->getCouleur() &&
      pieces[0]->getCouleur()==pieces[2]->getCouleur() &&
      pieces[0]->getCouleur()==pieces[3]->getCouleur()) return true;
  // la forme
  if (pieces[0]->getForme()==pieces[1]->getForme() &&
      pieces[0]->getForme()==pieces[2]->getForme() &&
      pieces[0]->getForme()==pieces[3]->getForme()) return true;
  // le trou
  if (pieces[0]->getTrou()==pieces[1]->getTrou() &&
      pieces[0]->getTrou()==pieces[2]->getTrou() &&
      pieces[0]->getTrou()==pieces[3]->getTrou()) return true;

  return false;
}

// Analyse si un alignement a été effectué
bool Jeu::analyze()
{
  Piece* pieces[4];

  // on teste les lignes //
  for(int j=0; j<4; j++) {
    for (int i=0; i<4; ++i)
      pieces[i] = tab[j*4+i].piece;
    if (caracCommune(pieces))
      return true;
  }

  // on teste les colonnes //
  for(int j=0; j<4; j++) {
    for (int i=0; i<4; ++i)
      pieces[i] = tab[4*i+j].piece;
    if (caracCommune(pieces))
      return true;
  }

  // on teste les diagonales //
  for (int i=0; i<4; ++i)
    pieces[i] = tab[5*i].piece;
  if (caracCommune(pieces))
    return true;

  for (int i=0; i<4; ++i)
    pieces[i] = tab[3*(i+1)].piece;
  if (caracCommune(pieces))
    return true;

  return false;
}