void
world::write(const world& w, std::ostream& o)
{
for(size_t col = 0; col < w.cols_; ++col)
{
for(size_t row = 0; row < w.rows_; ++row)
{
o << (w.has_cell(row, col) ? 'o' : ' ');
}
o << std::endl;
}
}
world
world::evolve(const world& w)
{
world w_next(w);
// TODO could this be a bit more object oriented, please?
for(size_t col = 0; col < w.cols_; ++col)
{
for(size_t row = 0; row < w.rows_; ++row)
{
size_t n = w.neighbours(row, col);
if(w.has_cell(row, col))
{
if(n < 2)
{
w_next.put_cell(row, col, false);
}
else if(n == 2 || n == 3)
{
w_next.put_cell(row, col, true);
}
else
{
w_next.put_cell(row, col, false);
}
}
else
{
if(n == 3)
{
w_next.put_cell(row, col, true);
}
}
}
}
return w_next;
}
