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author | german77 <juangerman-13@hotmail.com> | 2021-09-20 22:02:01 +0200 |
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committer | Narr the Reg <juangerman-13@hotmail.com> | 2021-11-25 03:30:22 +0100 |
commit | bf71d18af99368d7658c9519086c40e73c6abfdd (patch) | |
tree | 1040c7d8554106215b6da4637f75aabc0154d9c7 /src/core/hid/input_interpreter.h | |
parent | common: Rewrite and move core/frontend/input.h to common (diff) | |
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Diffstat (limited to 'src/core/hid/input_interpreter.h')
-rw-r--r-- | src/core/hid/input_interpreter.h | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/src/core/hid/input_interpreter.h b/src/core/hid/input_interpreter.h new file mode 100644 index 000000000..9495e3daf --- /dev/null +++ b/src/core/hid/input_interpreter.h @@ -0,0 +1,144 @@ +// Copyright 2020 yuzu Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#include <array> + +#include "common/common_types.h" + +namespace Core { +class System; +} + +namespace Service::HID { +class Controller_NPad; +} + +enum class HIDButton : u8 { + A, + B, + X, + Y, + LStick, + RStick, + L, + R, + ZL, + ZR, + Plus, + Minus, + + DLeft, + DUp, + DRight, + DDown, + + LStickLeft, + LStickUp, + LStickRight, + LStickDown, + + RStickLeft, + RStickUp, + RStickRight, + RStickDown, + + LeftSL, + LeftSR, + + RightSL, + RightSR, +}; + +/** + * The InputInterpreter class interfaces with HID to retrieve button press states. + * Input is intended to be polled every 50ms so that a button is considered to be + * held down after 400ms has elapsed since the initial button press and subsequent + * repeated presses occur every 50ms. + */ +class InputInterpreter { +public: + explicit InputInterpreter(Core::System& system); + virtual ~InputInterpreter(); + + /// Gets a button state from HID and inserts it into the array of button states. + void PollInput(); + + /// Resets all the button states to their defaults. + void ResetButtonStates(); + + /** + * Checks whether the button is pressed. + * + * @param button The button to check. + * + * @returns True when the button is pressed. + */ + [[nodiscard]] bool IsButtonPressed(HIDButton button) const; + + /** + * Checks whether any of the buttons in the parameter list is pressed. + * + * @tparam HIDButton The buttons to check. + * + * @returns True when at least one of the buttons is pressed. + */ + template <HIDButton... T> + [[nodiscard]] bool IsAnyButtonPressed() { + return (IsButtonPressed(T) || ...); + } + + /** + * The specified button is considered to be pressed once + * if it is currently pressed and not pressed previously. + * + * @param button The button to check. + * + * @returns True when the button is pressed once. + */ + [[nodiscard]] bool IsButtonPressedOnce(HIDButton button) const; + + /** + * Checks whether any of the buttons in the parameter list is pressed once. + * + * @tparam T The buttons to check. + * + * @returns True when at least one of the buttons is pressed once. + */ + template <HIDButton... T> + [[nodiscard]] bool IsAnyButtonPressedOnce() const { + return (IsButtonPressedOnce(T) || ...); + } + + /** + * The specified button is considered to be held down if it is pressed in all 9 button states. + * + * @param button The button to check. + * + * @returns True when the button is held down. + */ + [[nodiscard]] bool IsButtonHeld(HIDButton button) const; + + /** + * Checks whether any of the buttons in the parameter list is held down. + * + * @tparam T The buttons to check. + * + * @returns True when at least one of the buttons is held down. + */ + template <HIDButton... T> + [[nodiscard]] bool IsAnyButtonHeld() const { + return (IsButtonHeld(T) || ...); + } + +private: + Service::HID::Controller_NPad& npad; + + /// Stores 9 consecutive button states polled from HID. + std::array<u32, 9> button_states{}; + + std::size_t previous_index{}; + std::size_t current_index{}; +}; |