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Diffstat (limited to 'src/SDL2/include/SDL_joystick.h')
| -rw-r--r-- | src/SDL2/include/SDL_joystick.h | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/src/SDL2/include/SDL_joystick.h b/src/SDL2/include/SDL_joystick.h new file mode 100644 index 00000000..4214cef4 --- /dev/null +++ b/src/SDL2/include/SDL_joystick.h @@ -0,0 +1,253 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2012 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_joystick.h + * + * Include file for SDL joystick event handling + * + * The term "device_index" identifies currently plugged in joystick devices between 0 and SDL_NumJoysticks, with the exact joystick + * behind a device_index changing as joysticks are plugged and unplugged. + * + * The term "instance_id" is the current instantiation of a joystick device in the system, if the joystick is removed and then re-inserted + * then it will get a new instance_id, instance_id's are monotonically increasing identifiers of a joystick plugged in. + * + * The term JoystickGUID is a stable 128-bit identifier for a joystick device that does not change over time, it identifies class of + * the device (a X360 wired controller for example). This identifier is platform dependent. + * + * + */ + +#ifndef _SDL_joystick_h +#define _SDL_joystick_h + +#include "SDL_stdinc.h" +#include "SDL_error.h" + +#include "begin_code.h" +/* Set up for C function definitions, even when using C++ */ +#ifdef __cplusplus +/* *INDENT-OFF* */ +extern "C" { +/* *INDENT-ON* */ +#endif + +/** + * \file SDL_joystick.h + * + * In order to use these functions, SDL_Init() must have been called + * with the ::SDL_INIT_JOYSTICK flag. This causes SDL to scan the system + * for joysticks, and load appropriate drivers. + */ + +/* The joystick structure used to identify an SDL joystick */ +struct _SDL_Joystick; +typedef struct _SDL_Joystick SDL_Joystick; + +/* A structure that encodes the stable unique id for a joystick device */ +typedef struct { + Uint8 data[16]; +} SDL_JoystickGUID; + +typedef int SDL_JoystickID; + + +/* Function prototypes */ +/** + * Count the number of joysticks attached to the system right now + */ +extern DECLSPEC int SDLCALL SDL_NumJoysticks(void); + +/** + * Get the implementation dependent name of a joystick. + * This can be called before any joysticks are opened. + * If no name can be found, this function returns NULL. + */ +extern DECLSPEC const char *SDLCALL SDL_JoystickNameForIndex(int device_index); + +/** + * Open a joystick for use. + * The index passed as an argument refers tothe N'th joystick on the system. + * This index is the value which will identify this joystick in future joystick + * events. + * + * \return A joystick identifier, or NULL if an error occurred. + */ +extern DECLSPEC SDL_Joystick *SDLCALL SDL_JoystickOpen(int device_index); + +/** + * Return the name for this currently opened joystick. + * If no name can be found, this function returns NULL. + */ +extern DECLSPEC const char *SDLCALL SDL_JoystickName(SDL_Joystick * joystick); + +/** + * Return the GUID for the joystick at this index + */ +extern DECLSPEC SDL_JoystickGUID SDLCALL SDL_JoystickGetDeviceGUID(int device_index); + +/** + * Return the GUID for this opened joystick + */ +extern DECLSPEC SDL_JoystickGUID SDLCALL SDL_JoystickGetGUID(SDL_Joystick * joystick); + +/** + * Return a string representation for this guid. pszGUID must point to at least 33 bytes + * (32 for the string plus a NULL terminator). + */ +extern DECLSPEC void SDL_JoystickGetGUIDString(SDL_JoystickGUID guid, char *pszGUID, int cbGUID); + +/** + * convert a string into a joystick formatted guid + */ +extern DECLSPEC SDL_JoystickGUID SDLCALL SDL_JoystickGetGUIDFromString(const char *pchGUID); + +/** + * Returns SDL_TRUE if the joystick has been opened and currently connected, or SDL_FALSE if it has not. + */ +extern DECLSPEC SDL_bool SDLCALL SDL_JoystickGetAttached(SDL_Joystick * joystick); + +/** + * Get the instance ID of an opened joystick. + */ +extern DECLSPEC SDL_JoystickID SDLCALL SDL_JoystickInstanceID(SDL_Joystick * joystick); + +/** + * Get the number of general axis controls on a joystick. + */ +extern DECLSPEC int SDLCALL SDL_JoystickNumAxes(SDL_Joystick * joystick); + +/** + * Get the number of trackballs on a joystick. + * + * Joystick trackballs have only relative motion events associated + * with them and their state cannot be polled. + */ +extern DECLSPEC int SDLCALL SDL_JoystickNumBalls(SDL_Joystick * joystick); + +/** + * Get the number of POV hats on a joystick. + */ +extern DECLSPEC int SDLCALL SDL_JoystickNumHats(SDL_Joystick * joystick); + +/** + * Get the number of buttons on a joystick. + */ +extern DECLSPEC int SDLCALL SDL_JoystickNumButtons(SDL_Joystick * joystick); + +/** + * Update the current state of the open joysticks. + * + * This is called automatically by the event loop if any joystick + * events are enabled. + */ +extern DECLSPEC void SDLCALL SDL_JoystickUpdate(void); + +/** + * Enable/disable joystick event polling. + * + * If joystick events are disabled, you must call SDL_JoystickUpdate() + * yourself and check the state of the joystick when you want joystick + * information. + * + * The state can be one of ::SDL_QUERY, ::SDL_ENABLE or ::SDL_IGNORE. + */ +extern DECLSPEC int SDLCALL SDL_JoystickEventState(int state); + +/** + * Get the current state of an axis control on a joystick. + * + * The state is a value ranging from -32768 to 32767. + * + * The axis indices start at index 0. + */ +extern DECLSPEC Sint16 SDLCALL SDL_JoystickGetAxis(SDL_Joystick * joystick, + int axis); + +/** + * \name Hat positions + */ +/*@{*/ +#define SDL_HAT_CENTERED 0x00 +#define SDL_HAT_UP 0x01 +#define SDL_HAT_RIGHT 0x02 +#define SDL_HAT_DOWN 0x04 +#define SDL_HAT_LEFT 0x08 +#define SDL_HAT_RIGHTUP (SDL_HAT_RIGHT|SDL_HAT_UP) +#define SDL_HAT_RIGHTDOWN (SDL_HAT_RIGHT|SDL_HAT_DOWN) +#define SDL_HAT_LEFTUP (SDL_HAT_LEFT|SDL_HAT_UP) +#define SDL_HAT_LEFTDOWN (SDL_HAT_LEFT|SDL_HAT_DOWN) +/*@}*/ + +/** + * Get the current state of a POV hat on a joystick. + * + * The hat indices start at index 0. + * + * \return The return value is one of the following positions: + * - ::SDL_HAT_CENTERED + * - ::SDL_HAT_UP + * - ::SDL_HAT_RIGHT + * - ::SDL_HAT_DOWN + * - ::SDL_HAT_LEFT + * - ::SDL_HAT_RIGHTUP + * - ::SDL_HAT_RIGHTDOWN + * - ::SDL_HAT_LEFTUP + * - ::SDL_HAT_LEFTDOWN + */ +extern DECLSPEC Uint8 SDLCALL SDL_JoystickGetHat(SDL_Joystick * joystick, + int hat); + +/** + * Get the ball axis change since the last poll. + * + * \return 0, or -1 if you passed it invalid parameters. + * + * The ball indices start at index 0. + */ +extern DECLSPEC int SDLCALL SDL_JoystickGetBall(SDL_Joystick * joystick, + int ball, int *dx, int *dy); + +/** + * Get the current state of a button on a joystick. + * + * The button indices start at index 0. + */ +extern DECLSPEC Uint8 SDLCALL SDL_JoystickGetButton(SDL_Joystick * joystick, + int button); + +/** + * Close a joystick previously opened with SDL_JoystickOpen(). + */ +extern DECLSPEC void SDLCALL SDL_JoystickClose(SDL_Joystick * joystick); + + +/* Ends C function definitions when using C++ */ +#ifdef __cplusplus +/* *INDENT-OFF* */ +} +/* *INDENT-ON* */ +#endif +#include "close_code.h" + +#endif /* _SDL_joystick_h */ + +/* vi: set ts=4 sw=4 expandtab: */ |