void CellGrid::iterateCell( int x, int y )
{
int ln = getNumLiveNeighbors( x, y );
if( isCellAlive( x, y ) )
{
if( ln < 2 )
setNextCellState( x, y, false );
else if( ln == 2 || ln == 3 )
setNextCellState( x, y, true );
else if( ln > 3 )
setNextCellState( x, y, false );
}
else
{
if( ln == 3 )
setNextCellState( x, y, true );
}
}
void Grid::update()
{
if (!m_IsPlaying)
return;
// Maps coordinates to its new state
std::map<std::pair<int,int>, int> stateChanges;
for (int x = 0; x < NUM_CELLS; ++x)
{
for (int y = 0; y < NUM_CELLS; ++y)
{
auto numLiveNeighbors = getNumLiveNeighbors(x, y);
if (m_Cells[x][y] == 1)
{
if ((numLiveNeighbors < 2) || (numLiveNeighbors > 3))
stateChanges[std::make_pair(x, y)] = 0;
}
else
{
if (numLiveNeighbors == 3)
stateChanges[std::make_pair(x, y)] = 1;
}
}
}
for (auto& pair : stateChanges)
{
auto x = pair.first.first;
auto y = pair.first.second;
setCellState(x, y, pair.second);
}
++m_NumGenerations;
}
