refactor: move emulation logic into sys

1 files changed, 30 insertions, 0 deletions

diff --git a/lib/nes/sys/controller.hh b/lib/nes/sys/controller.hh
new file mode 100644
index 0000000..441e236
--- /dev/null
+++ b/lib/nes/sys/controller.hh
@@ -0,0 +1,30 @@
+#pragma once
+
+#include "nes/sys/types/button-mask.hh"
+
+namespace nes
+{
+	class controller
+	{
+		button_mask pressed_;
+		unsigned index_{ 0 };
+		bool strobing_{ false };
+
+	public:
+		explicit controller() = default;
+
+		controller(controller const&) = delete;
+		controller(controller&&) = delete;
+		auto operator=(controller const&) -> controller& = delete;
+		auto operator=(controller&&) -> controller& = delete;
+
+		auto get_pressed() const -> button_mask { return pressed_;}
+		auto ref_pressed() -> button_mask& { return pressed_; }
+		auto set_pressed(button_mask const value) -> void { pressed_ = value; }
+
+		// IO register
+
+		auto read() -> std::uint8_t;
+		auto write(std::uint8_t) -> void;
+	};
+} // namespace nes
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