GameOfLife.cpp

# include <Siv3D.hpp> // Siv3D June 2015 v2

void Main()
{
	Graphics2D::SetSamplerState(SamplerState::ClampPoint);
	Image img(128, 96, Color(0));
	DynamicTexture tex;

	for (auto& p : img)
		p.r = Random(1);

	while (System::Update())
	{
		for (auto b : step(img.size))
		{
			int s = 0;
			for (auto d : step({ -1, -1 }, { 3, 3 }))
				s += img.getPixel<ImageAddressMode::Wrap>(b.y + d.y, b.x + d.x).r;

			auto& p = img[b.y][b.x];
			p.b = (s == 3) || (p.r && s == 4);
		}

		tex.fill(img.forEach([](Color& p){p.g = (p.r = p.b) ? 255 : 0; }));
		tex.scale(5).draw();

		System::Sleep(100);
	}
}