112 lines
3 KiB
C++
112 lines
3 KiB
C++
// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#pragma once
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#include <array>
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#include "common/common_types.h"
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namespace Core {
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class System;
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}
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namespace Core::HID {
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enum class NpadButton : u64;
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}
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namespace Service::HID {
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class NPad;
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}
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/**
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* The InputInterpreter class interfaces with HID to retrieve button press states.
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* Input is intended to be polled every 50ms so that a button is considered to be
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* held down after 400ms has elapsed since the initial button press and subsequent
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* repeated presses occur every 50ms.
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*/
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class InputInterpreter {
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public:
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explicit InputInterpreter(Core::System& system);
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virtual ~InputInterpreter();
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/// Gets a button state from HID and inserts it into the array of button states.
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void PollInput();
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/// Resets all the button states to their defaults.
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void ResetButtonStates();
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/**
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* Checks whether the button is pressed.
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*
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* @param button The button to check.
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*
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* @returns True when the button is pressed.
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*/
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[[nodiscard]] bool IsButtonPressed(Core::HID::NpadButton button) const;
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/**
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* Checks whether any of the buttons in the parameter list is pressed.
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*
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* @tparam HIDButton The buttons to check.
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*
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* @returns True when at least one of the buttons is pressed.
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*/
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template <Core::HID::NpadButton... T>
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[[nodiscard]] bool IsAnyButtonPressed() {
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return (IsButtonPressed(T) || ...);
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}
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/**
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* The specified button is considered to be pressed once
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* if it is currently pressed and not pressed previously.
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*
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* @param button The button to check.
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*
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* @returns True when the button is pressed once.
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*/
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[[nodiscard]] bool IsButtonPressedOnce(Core::HID::NpadButton button) const;
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/**
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* Checks whether any of the buttons in the parameter list is pressed once.
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*
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* @tparam T The buttons to check.
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*
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* @returns True when at least one of the buttons is pressed once.
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*/
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template <Core::HID::NpadButton... T>
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[[nodiscard]] bool IsAnyButtonPressedOnce() const {
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return (IsButtonPressedOnce(T) || ...);
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}
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/**
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* The specified button is considered to be held down if it is pressed in all 9 button states.
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*
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* @param button The button to check.
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*
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* @returns True when the button is held down.
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*/
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[[nodiscard]] bool IsButtonHeld(Core::HID::NpadButton button) const;
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/**
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* Checks whether any of the buttons in the parameter list is held down.
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*
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* @tparam T The buttons to check.
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*
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* @returns True when at least one of the buttons is held down.
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*/
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template <Core::HID::NpadButton... T>
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[[nodiscard]] bool IsAnyButtonHeld() const {
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return (IsButtonHeld(T) || ...);
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}
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private:
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std::shared_ptr<Service::HID::NPad> npad;
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/// Stores 9 consecutive button states polled from HID.
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std::array<Core::HID::NpadButton, 9> button_states{};
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std::size_t previous_index{};
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std::size_t current_index{};
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};
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