jak-project/game/system/hid/devices/keyboard.h

#pragma once

#include "input_device.h"

// A simple way to store the current state of the keyboard
// if we are polling every frame, we need a point of reference to know
// how the PadData has to be modified
//
// For example if the keyboard no longer has "W" pressed is it:
// - because it was pressed before and the user let go of it (adjust analog value)
// - because it was never pressed at all (noop!)
//
// Likewise, when modifiers are let go, we can use this to enumerate through to see what has to be
// invalidated
struct ActiveKeyboardAction {
  u32 sdl_keycode;
  InputBinding binding;
  std::function<void(std::shared_ptr<PadData>, InputBinding bind)> revert_action;
};

class KeyboardDevice : public InputDevice {
 public:
  KeyboardDevice(){};
  KeyboardDevice(std::shared_ptr<game_settings::InputSettings> settings);
  ~KeyboardDevice() {}

  // Polls the entire state of the keyboard to set the PadData
  void poll_state(std::shared_ptr<PadData> data);
  void clear_actions(std::shared_ptr<PadData> data);
  void process_event(const SDL_Event& event,
                     const CommandBindingGroups& commands,
                     std::shared_ptr<PadData> data,
                     std::optional<InputBindAssignmentMeta>& bind_assignment) override;
  // clang-format off
  void close_device() override {
    // there is nothing to close
  };
  // clang-format on

 private:
  std::vector<ActiveKeyboardAction> m_active_actions = {};
  // When we assign a bind on a keydown, we have to ignore it's keyup event
  // for analog binds, or it will adjust the position
  std::optional<u32> m_ignore_key_on_keyup;

  bool is_action_already_active(const u32 sdl_keycode);
};