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diff --git a/3rdparty/include/SDL2/SDL_gamecontroller.h b/3rdparty/include/SDL2/SDL_gamecontroller.h
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+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2020 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+
+/**
+ *  \file SDL_gamecontroller.h
+ *
+ *  Include file for SDL game controller event handling
+ */
+
+#ifndef SDL_gamecontroller_h_
+#define SDL_gamecontroller_h_
+
+#include "SDL_stdinc.h"
+#include "SDL_error.h"
+#include "SDL_rwops.h"
+#include "SDL_joystick.h"
+
+#include "begin_code.h"
+/* Set up for C function definitions, even when using C++ */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ *  \file SDL_gamecontroller.h
+ *
+ *  In order to use these functions, SDL_Init() must have been called
+ *  with the ::SDL_INIT_GAMECONTROLLER flag.  This causes SDL to scan the system
+ *  for game controllers, and load appropriate drivers.
+ *
+ *  If you would like to receive controller updates while the application
+ *  is in the background, you should set the following hint before calling
+ *  SDL_Init(): SDL_HINT_JOYSTICK_ALLOW_BACKGROUND_EVENTS
+ */
+
+/**
+ * The gamecontroller structure used to identify an SDL game controller
+ */
+struct _SDL_GameController;
+typedef struct _SDL_GameController SDL_GameController;
+
+typedef enum
+{
+    SDL_CONTROLLER_TYPE_UNKNOWN = 0,
+    SDL_CONTROLLER_TYPE_XBOX360,
+    SDL_CONTROLLER_TYPE_XBOXONE,
+    SDL_CONTROLLER_TYPE_PS3,
+    SDL_CONTROLLER_TYPE_PS4,
+    SDL_CONTROLLER_TYPE_NINTENDO_SWITCH_PRO
+} SDL_GameControllerType;
+
+typedef enum
+{
+    SDL_CONTROLLER_BINDTYPE_NONE = 0,
+    SDL_CONTROLLER_BINDTYPE_BUTTON,
+    SDL_CONTROLLER_BINDTYPE_AXIS,
+    SDL_CONTROLLER_BINDTYPE_HAT
+} SDL_GameControllerBindType;
+
+/**
+ *  Get the SDL joystick layer binding for this controller button/axis mapping
+ */
+typedef struct SDL_GameControllerButtonBind
+{
+    SDL_GameControllerBindType bindType;
+    union
+    {
+        int button;
+        int axis;
+        struct {
+            int hat;
+            int hat_mask;
+        } hat;
+    } value;
+
+} SDL_GameControllerButtonBind;
+
+
+/**
+ *  To count the number of game controllers in the system for the following:
+ *  int nJoysticks = SDL_NumJoysticks();
+ *  int nGameControllers = 0;
+ *  for (int i = 0; i < nJoysticks; i++) {
+ *      if (SDL_IsGameController(i)) {
+ *          nGameControllers++;
+ *      }
+ *  }
+ *
+ *  Using the SDL_HINT_GAMECONTROLLERCONFIG hint or the SDL_GameControllerAddMapping() you can add support for controllers SDL is unaware of or cause an existing controller to have a different binding. The format is:
+ *  guid,name,mappings
+ *
+ *  Where GUID is the string value from SDL_JoystickGetGUIDString(), name is the human readable string for the device and mappings are controller mappings to joystick ones.
+ *  Under Windows there is a reserved GUID of "xinput" that covers any XInput devices.
+ *  The mapping format for joystick is:
+ *      bX - a joystick button, index X
+ *      hX.Y - hat X with value Y
+ *      aX - axis X of the joystick
+ *  Buttons can be used as a controller axis and vice versa.
+ *
+ *  This string shows an example of a valid mapping for a controller
+ *  "03000000341a00003608000000000000,PS3 Controller,a:b1,b:b2,y:b3,x:b0,start:b9,guide:b12,back:b8,dpup:h0.1,dpleft:h0.8,dpdown:h0.4,dpright:h0.2,leftshoulder:b4,rightshoulder:b5,leftstick:b10,rightstick:b11,leftx:a0,lefty:a1,rightx:a2,righty:a3,lefttrigger:b6,righttrigger:b7",
+ *
+ */
+
+/**
+ *  Load a set of mappings from a seekable SDL data stream (memory or file), filtered by the current SDL_GetPlatform()
+ *  A community sourced database of controllers is available at https://raw.github.com/gabomdq/SDL_GameControllerDB/master/gamecontrollerdb.txt
+ *
+ *  If \c freerw is non-zero, the stream will be closed after being read.
+ * 
+ * \return number of mappings added, -1 on error
+ */
+extern DECLSPEC int SDLCALL SDL_GameControllerAddMappingsFromRW(SDL_RWops * rw, int freerw);
+
+/**
+ *  Load a set of mappings from a file, filtered by the current SDL_GetPlatform()
+ *
+ *  Convenience macro.
+ */
+#define SDL_GameControllerAddMappingsFromFile(file)   SDL_GameControllerAddMappingsFromRW(SDL_RWFromFile(file, "rb"), 1)
+
+/**
+ *  Add or update an existing mapping configuration
+ *
+ * \return 1 if mapping is added, 0 if updated, -1 on error
+ */
+extern DECLSPEC int SDLCALL SDL_GameControllerAddMapping(const char* mappingString);
+
+/**
+ *  Get the number of mappings installed
+ *
+ *  \return the number of mappings
+ */
+extern DECLSPEC int SDLCALL SDL_GameControllerNumMappings(void);
+
+/**
+ *  Get the mapping at a particular index.
+ *
+ *  \return the mapping string.  Must be freed with SDL_free().  Returns NULL if the index is out of range.
+ */
+extern DECLSPEC char * SDLCALL SDL_GameControllerMappingForIndex(int mapping_index);
+
+/**
+ *  Get a mapping string for a GUID
+ *
+ *  \return the mapping string.  Must be freed with SDL_free().  Returns NULL if no mapping is available
+ */
+extern DECLSPEC char * SDLCALL SDL_GameControllerMappingForGUID(SDL_JoystickGUID guid);
+
+/**
+ *  Get a mapping string for an open GameController
+ *
+ *  \return the mapping string.  Must be freed with SDL_free().  Returns NULL if no mapping is available
+ */
+extern DECLSPEC char * SDLCALL SDL_GameControllerMapping(SDL_GameController * gamecontroller);
+
+/**
+ *  Is the joystick on this index supported by the game controller interface?
+ */
+extern DECLSPEC SDL_bool SDLCALL SDL_IsGameController(int joystick_index);
+
+/**
+ *  Get the implementation dependent name of a game controller.
+ *  This can be called before any controllers are opened.
+ *  If no name can be found, this function returns NULL.
+ */
+extern DECLSPEC const char *SDLCALL SDL_GameControllerNameForIndex(int joystick_index);
+
+/**
+ *  Get the type of a game controller.
+ *  This can be called before any controllers are opened.
+ */
+extern DECLSPEC SDL_GameControllerType SDLCALL SDL_GameControllerTypeForIndex(int joystick_index);
+
+/**
+ *  Get the mapping of a game controller.
+ *  This can be called before any controllers are opened.
+ *
+ *  \return the mapping string.  Must be freed with SDL_free().  Returns NULL if no mapping is available
+ */
+extern DECLSPEC char *SDLCALL SDL_GameControllerMappingForDeviceIndex(int joystick_index);
+
+/**
+ *  Open a game controller for use.
+ *  The index passed as an argument refers to the N'th game controller on the system.
+ *  This index is not the value which will identify this controller in future
+ *  controller events.  The joystick's instance id (::SDL_JoystickID) will be
+ *  used there instead.
+ *
+ *  \return A controller identifier, or NULL if an error occurred.
+ */
+extern DECLSPEC SDL_GameController *SDLCALL SDL_GameControllerOpen(int joystick_index);
+
+/**
+ * Return the SDL_GameController associated with an instance id.
+ */
+extern DECLSPEC SDL_GameController *SDLCALL SDL_GameControllerFromInstanceID(SDL_JoystickID joyid);
+
+/**
+ * Return the SDL_GameController associated with a player index.
+ */
+extern DECLSPEC SDL_GameController *SDLCALL SDL_GameControllerFromPlayerIndex(int player_index);
+
+/**
+ *  Return the name for this currently opened controller
+ */
+extern DECLSPEC const char *SDLCALL SDL_GameControllerName(SDL_GameController *gamecontroller);
+
+/**
+ *  Return the type of this currently opened controller
+ */
+extern DECLSPEC SDL_GameControllerType SDLCALL SDL_GameControllerGetType(SDL_GameController *gamecontroller);
+
+/**
+ *  Get the player index of an opened game controller, or -1 if it's not available
+ *
+ *  For XInput controllers this returns the XInput user index.
+ */
+extern DECLSPEC int SDLCALL SDL_GameControllerGetPlayerIndex(SDL_GameController *gamecontroller);
+
+/**
+ *  Set the player index of an opened game controller
+ */
+extern DECLSPEC void SDLCALL SDL_GameControllerSetPlayerIndex(SDL_GameController *gamecontroller, int player_index);
+
+/**
+ *  Get the USB vendor ID of an opened controller, if available.
+ *  If the vendor ID isn't available this function returns 0.
+ */
+extern DECLSPEC Uint16 SDLCALL SDL_GameControllerGetVendor(SDL_GameController * gamecontroller);
+
+/**
+ *  Get the USB product ID of an opened controller, if available.
+ *  If the product ID isn't available this function returns 0.
+ */
+extern DECLSPEC Uint16 SDLCALL SDL_GameControllerGetProduct(SDL_GameController * gamecontroller);
+
+/**
+ *  Get the product version of an opened controller, if available.
+ *  If the product version isn't available this function returns 0.
+ */
+extern DECLSPEC Uint16 SDLCALL SDL_GameControllerGetProductVersion(SDL_GameController * gamecontroller);
+
+/**
+ *  Returns SDL_TRUE if the controller has been opened and currently connected,
+ *  or SDL_FALSE if it has not.
+ */
+extern DECLSPEC SDL_bool SDLCALL SDL_GameControllerGetAttached(SDL_GameController *gamecontroller);
+
+/**
+ *  Get the underlying joystick object used by a controller
+ */
+extern DECLSPEC SDL_Joystick *SDLCALL SDL_GameControllerGetJoystick(SDL_GameController *gamecontroller);
+
+/**
+ *  Enable/disable controller event polling.
+ *
+ *  If controller events are disabled, you must call SDL_GameControllerUpdate()
+ *  yourself and check the state of the controller when you want controller
+ *  information.
+ *
+ *  The state can be one of ::SDL_QUERY, ::SDL_ENABLE or ::SDL_IGNORE.
+ */
+extern DECLSPEC int SDLCALL SDL_GameControllerEventState(int state);
+
+/**
+ *  Update the current state of the open game controllers.
+ *
+ *  This is called automatically by the event loop if any game controller
+ *  events are enabled.
+ */
+extern DECLSPEC void SDLCALL SDL_GameControllerUpdate(void);
+
+
+/**
+ *  The list of axes available from a controller
+ *
+ *  Thumbstick axis values range from SDL_JOYSTICK_AXIS_MIN to SDL_JOYSTICK_AXIS_MAX,
+ *  and are centered within ~8000 of zero, though advanced UI will allow users to set
+ *  or autodetect the dead zone, which varies between controllers.
+ *
+ *  Trigger axis values range from 0 to SDL_JOYSTICK_AXIS_MAX.
+ */
+typedef enum
+{
+    SDL_CONTROLLER_AXIS_INVALID = -1,
+    SDL_CONTROLLER_AXIS_LEFTX,
+    SDL_CONTROLLER_AXIS_LEFTY,
+    SDL_CONTROLLER_AXIS_RIGHTX,
+    SDL_CONTROLLER_AXIS_RIGHTY,
+    SDL_CONTROLLER_AXIS_TRIGGERLEFT,
+    SDL_CONTROLLER_AXIS_TRIGGERRIGHT,
+    SDL_CONTROLLER_AXIS_MAX
+} SDL_GameControllerAxis;
+
+/**
+ *  turn this string into a axis mapping
+ */
+extern DECLSPEC SDL_GameControllerAxis SDLCALL SDL_GameControllerGetAxisFromString(const char *pchString);
+
+/**
+ *  turn this axis enum into a string mapping
+ */
+extern DECLSPEC const char* SDLCALL SDL_GameControllerGetStringForAxis(SDL_GameControllerAxis axis);
+
+/**
+ *  Get the SDL joystick layer binding for this controller button mapping
+ */
+extern DECLSPEC SDL_GameControllerButtonBind SDLCALL
+SDL_GameControllerGetBindForAxis(SDL_GameController *gamecontroller,
+                                 SDL_GameControllerAxis axis);
+
+/**
+ *  Get the current state of an axis control on a game controller.
+ *
+ *  The state is a value ranging from -32768 to 32767 (except for the triggers,
+ *  which range from 0 to 32767).
+ *
+ *  The axis indices start at index 0.
+ */
+extern DECLSPEC Sint16 SDLCALL
+SDL_GameControllerGetAxis(SDL_GameController *gamecontroller,
+                          SDL_GameControllerAxis axis);
+
+/**
+ *  The list of buttons available from a controller
+ */
+typedef enum
+{
+    SDL_CONTROLLER_BUTTON_INVALID = -1,
+    SDL_CONTROLLER_BUTTON_A,
+    SDL_CONTROLLER_BUTTON_B,
+    SDL_CONTROLLER_BUTTON_X,
+    SDL_CONTROLLER_BUTTON_Y,
+    SDL_CONTROLLER_BUTTON_BACK,
+    SDL_CONTROLLER_BUTTON_GUIDE,
+    SDL_CONTROLLER_BUTTON_START,
+    SDL_CONTROLLER_BUTTON_LEFTSTICK,
+    SDL_CONTROLLER_BUTTON_RIGHTSTICK,
+    SDL_CONTROLLER_BUTTON_LEFTSHOULDER,
+    SDL_CONTROLLER_BUTTON_RIGHTSHOULDER,
+    SDL_CONTROLLER_BUTTON_DPAD_UP,
+    SDL_CONTROLLER_BUTTON_DPAD_DOWN,
+    SDL_CONTROLLER_BUTTON_DPAD_LEFT,
+    SDL_CONTROLLER_BUTTON_DPAD_RIGHT,
+    SDL_CONTROLLER_BUTTON_MAX
+} SDL_GameControllerButton;
+
+/**
+ *  turn this string into a button mapping
+ */
+extern DECLSPEC SDL_GameControllerButton SDLCALL SDL_GameControllerGetButtonFromString(const char *pchString);
+
+/**
+ *  turn this button enum into a string mapping
+ */
+extern DECLSPEC const char* SDLCALL SDL_GameControllerGetStringForButton(SDL_GameControllerButton button);
+
+/**
+ *  Get the SDL joystick layer binding for this controller button mapping
+ */
+extern DECLSPEC SDL_GameControllerButtonBind SDLCALL
+SDL_GameControllerGetBindForButton(SDL_GameController *gamecontroller,
+                                   SDL_GameControllerButton button);
+
+
+/**
+ *  Get the current state of a button on a game controller.
+ *
+ *  The button indices start at index 0.
+ */
+extern DECLSPEC Uint8 SDLCALL SDL_GameControllerGetButton(SDL_GameController *gamecontroller,
+                                                          SDL_GameControllerButton button);
+
+/**
+ *  Trigger a rumble effect
+ *  Each call to this function cancels any previous rumble effect, and calling it with 0 intensity stops any rumbling.
+ *
+ *  \param gamecontroller The controller to vibrate
+ *  \param low_frequency_rumble The intensity of the low frequency (left) rumble motor, from 0 to 0xFFFF
+ *  \param high_frequency_rumble The intensity of the high frequency (right) rumble motor, from 0 to 0xFFFF
+ *  \param duration_ms The duration of the rumble effect, in milliseconds
+ *
+ *  \return 0, or -1 if rumble isn't supported on this joystick
+ */
+extern DECLSPEC int SDLCALL SDL_GameControllerRumble(SDL_GameController *gamecontroller, Uint16 low_frequency_rumble, Uint16 high_frequency_rumble, Uint32 duration_ms);
+
+/**
+ *  Close a controller previously opened with SDL_GameControllerOpen().
+ */
+extern DECLSPEC void SDLCALL SDL_GameControllerClose(SDL_GameController *gamecontroller);
+
+
+/* Ends C function definitions when using C++ */
+#ifdef __cplusplus
+}
+#endif
+#include "close_code.h"
+
+#endif /* SDL_gamecontroller_h_ */
+
+/* vi: set ts=4 sw=4 expandtab: */