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

 Copyright (C) 2002-2006 Gilles Debunne (Gilles.Debunne@imag.fr)

This file is part of the QGLViewer library.
 Version 2.2.4-1, released on December 12, 2006.

 http://artis.imag.fr/Members/Gilles.Debunne/QGLViewer

 libQGLViewer is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
 (at your option) any later version.

 libQGLViewer is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with libQGLViewer; if not, write to the Free Software
 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

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

#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;
}