bool MainWindow::updateConnections()
{
bool newconnection[BoardSize * BoardSize];
for(int i = 0; i < BoardSize * BoardSize; i++)
newconnection[i] = false;
CellList list;
if(!root->isRotated())
{
newconnection[root->index()] = true;
list.append(root);
}
while(!list.isEmpty())
{
Cell* cell = list.first();
Cell* ucell = uCell(cell);
Cell* rcell = rCell(cell);
Cell* dcell = dCell(cell);
Cell* lcell = lCell(cell);
if((cell->dirs() & Cell::U) && ucell && (ucell->dirs() & Cell::D) && !newconnection[ucell->index()] && !ucell->isRotated())
{
newconnection[ucell->index()] = true;
list.append(ucell);
}
if((cell->dirs() & Cell::R) && rcell && (rcell->dirs() & Cell::L) && !newconnection[rcell->index()] && !rcell->isRotated())
{
newconnection[rcell->index()] = true;
list.append(rcell);
}
if((cell->dirs() & Cell::D) && dcell && (dcell->dirs() & Cell::U) && !newconnection[dcell->index()] && !dcell->isRotated())
{
newconnection[dcell->index()] = true;
list.append(dcell);
}
if((cell->dirs() & Cell::L) && lcell && (lcell->dirs() & Cell::R) && !newconnection[lcell->index()] && !lcell->isRotated())
{
newconnection[lcell->index()] = true;
list.append(lcell);
}
list.removeFirst();
}
bool isnewconnection = false;
for(int i = 0; i < BoardSize * BoardSize; i++)
{
if(!board[i]->isConnected() && newconnection[i])
isnewconnection = true;
board[i]->setConnected(newconnection[i]);
}
return isnewconnection;
}
