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#pragma once
#include <cstddef>
#include <memory>
// NOLINTNEXTLINE(cppcoreguidelines-special-member-functions)
class IUserInputObserver
{
public:
using Key = char;
virtual ~IUserInputObserver() noexcept = default;
virtual void listen() noexcept = 0;
virtual auto is_key_pressed(Key key) noexcept -> bool = 0;
[[nodiscard]] virtual auto get_currently_pressed_key() const noexcept -> Key = 0;
virtual void clear_currently_pressed() noexcept = 0;
};
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