InputEvents.hpp

#pragma once
 
#include <SDL2/SDL.h>
 
#if !defined(_3DS) && !defined(_3DS_MOCK)
// 3ds has no sdl keycodes
typedef SDL_Keycode CST_Keycode;
#else
typedef int CST_Keycode;
#endif
 
typedef uint16_t CST_Keymod;
 
#include <functional>
#include <string>
 
#define TOTAL_BUTTONS 18
 
// clang-format off
#define LEFT_BUTTON       0b00000000000001
#define RIGHT_BUTTON      0b00000000000010
#define UP_BUTTON         0b00000000000100
#define DOWN_BUTTON       0b00000000001000
#define START_BUTTON      0b00000000010000
#define B_BUTTON          0b00000000100000
#define A_BUTTON          0b00000001000000
#define ZL_BUTTON         0b00000010000000
#define SELECT_BUTTON     0b00000100000000
#define L_BUTTON          0b00001000000000
#define R_BUTTON          0b00010000000000
#define X_BUTTON          0b00100000000000
#define Y_BUTTON          0b01000000000000
#define ZR_BUTTON         0b10000000000000
 
// SDL enums should line up with the actual controls
// uses switch+wiiu mappings, see: https://github.com/rw-r-r-0644/sdl2-wiiu/blob/master/SDL2-wiiu/src/joystick/wiiu/SDL_sysjoystick.c#L38
#define SDL_A        SDL_CONTROLLER_BUTTON_A
#define SDL_B        SDL_CONTROLLER_BUTTON_B
#define SDL_X        SDL_CONTROLLER_BUTTON_X
#define SDL_Y        SDL_CONTROLLER_BUTTON_Y
 
#define SDL_PLUS     SDL_CONTROLLER_BUTTON_RIGHTSHOULDER
#define SDL_L        SDL_CONTROLLER_BUTTON_START
#define SDL_R        SDL_CONTROLLER_BUTTON_LEFTSTICK
#define SDL_ZL       SDL_CONTROLLER_BUTTON_RIGHTSTICK
#define SDL_ZR       SDL_CONTROLLER_BUTTON_LEFTSHOULDER
#define SDL_MINUS    SDL_CONTROLLER_BUTTON_DPAD_UP
 
#define SDL_UP        SDL_CONTROLLER_BUTTON_DPAD_LEFT
#define SDL_DOWN      SDL_CONTROLLER_BUTTON_MISC1
#define SDL_LEFT      SDL_CONTROLLER_BUTTON_DPAD_DOWN
#define SDL_RIGHT     SDL_CONTROLLER_BUTTON_DPAD_RIGHT
 
#define SDL_LEFT_STICK   (SDL_GameControllerButton)16
#define SDL_UP_STICK     (SDL_GameControllerButton)17
#define SDL_RIGHT_STICK  (SDL_GameControllerButton)18
#define SDL_DOWN_STICK   (SDL_GameControllerButton)19
// clang-format on
 
struct GamepadInfo {
    unsigned int* buttons;
    std::string* names;
    std::string prefix;
    std::string controller_type;
 
public:
    GamepadInfo(unsigned int* buttons, std::string* names, std::string prefix, std::string controller_type)
        : buttons(buttons), names(names), prefix(prefix), controller_type(controller_type) {}
    GamepadInfo()
        : buttons(nullptr), names(nullptr), prefix(""), controller_type("")
    {
    }
};
 
class InputEvents
{
public:
    InputEvents();
 
    bool held(int buttons);
    bool pressed(int buttons);
    bool released(int buttons);
 
    bool touchIn(int x, int width, int y, int height);
 
    bool processSDLEvents();
    bool update();
 
    bool allowTouch = true;
    bool isScrolling = false;
 
    // whether or not the current event is one of a few known ones
    bool isTouchDown();
    bool isTouchUp();
    bool isTouchDrag();
    bool isTouch();
 
    bool isScroll();
    bool isKeyDown();
    bool isKeyUp();
 
    // additional key processing info
    bool processDirectionalButtons();
    int directionForKeycode();
    void toggleHeldButtons();
 
    void processJoystickHotplugging(SDL_Event *event);
 
    CST_Keycode keyCode = -1;
    CST_Keymod mod = -1;
    SDL_Event event; // underlying SDL event
 
    bool held_directions[4] = { false, false, false, false };
    Uint32 held_type;
 
    int rapidFireRate = 12; // fire duplicate events if curframe mod rapidFireRate is 0 (higher = slower)
    int curFrame = 0;
 
    static bool bypassKeyEvents;
    static GamepadInfo& getLastGamepadInfo();
    static std::string lastGamepadKey;
 
    std::function<void()> quitaction = NULL; //Called for an SDL_Quit event, usually caused by a SIGINT
 
    float wheelScroll = 0;
 
    int yPos = 0;
    int xPos = 0;
    bool noop = false;
 
    Uint32 type;
};