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#pragma once
#include "nes/app/input/input-device-keyboard.hh"
#include "nes/app/input/input-device-controller.hh"
#include "nes/common/containers/list.hh"
#include "nes/common/types.hh"
namespace nes::app
{
/// Manages input devices.
///
/// The main purpose of this class is to assign newly plugged in controllers as the primary/secondary input and fall
/// back to the keyboard if needed.
class input_manager
{
static constexpr auto input_count = u32{ 2 };
input_device_keyboard* keyboard_;
input_device_controller::index keyboard_index_{ input_device_controller::index::unused };
list<input_device_controller> controllers_;
struct
{
input_device* device{ nullptr };
input_device_controller* controller{ nullptr };
} inputs_[input_count]{};
public:
explicit input_manager(input_device_keyboard&);
input_manager(input_manager const&) = delete;
input_manager(input_manager&&) = delete;
auto operator=(input_manager const&) -> input_manager& = delete;
auto operator=(input_manager&&) -> input_manager& = delete;
auto get_input_1() const -> input_device& { return *inputs_[0].device; }
auto get_input_2() const -> input_device& { return *inputs_[1].device; }
auto toggle_input_1() -> void { toggle_input(0); }
auto toggle_input_2() -> void { toggle_input(1); }
auto get_keyboard() const -> input_device_keyboard& { return *keyboard_; }
auto get_controllers() const -> list<input_device_controller> const& { return controllers_; }
auto add_controller(input_device_controller&) -> void;
auto remove_controller(input_device_controller&) -> void;
private:
auto toggle_input(u32) -> void;
auto fill_unassigned_inputs() -> void;
};
} // namespace nes::app
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