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Diffstat (limited to 'code/SDL12/include/SDL_joystick.h')
| -rw-r--r-- | code/SDL12/include/SDL_joystick.h | 187 |
1 files changed, 187 insertions, 0 deletions
diff --git a/code/SDL12/include/SDL_joystick.h b/code/SDL12/include/SDL_joystick.h new file mode 100644 index 0000000..d5135c3 --- /dev/null +++ b/code/SDL12/include/SDL_joystick.h @@ -0,0 +1,187 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997-2009 Sam Lantinga + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + Sam Lantinga + slouken@libsdl.org +*/ + +/** @file SDL_joystick.h + * Include file for SDL joystick event handling + */ + +#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 +extern "C" { +#endif + +/** @file SDL_joystick.h + * @note 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; + +/* Function prototypes */ +/** + * Count the number of joysticks attached to the system + */ +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_JoystickName(int device_index); + +/** + * Open a joystick for use. + * + * @param[in] device_index + * The index passed as an argument refers to + * the N'th joystick on the system. This index is the value which will + * identify this joystick in future joystick events. + * + * @return This function returns a joystick identifier, or NULL if an error occurred. + */ +extern DECLSPEC SDL_Joystick * SDLCALL SDL_JoystickOpen(int device_index); + +/** + * Returns 1 if the joystick has been opened, or 0 if it has not. + */ +extern DECLSPEC int SDLCALL SDL_JoystickOpened(int device_index); + +/** + * Get the device index of an opened joystick. + */ +extern DECLSPEC int SDLCALL SDL_JoystickIndex(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. + * + * @param[in] state 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 + * + * @param[in] axis The axis indices start at index 0. + * + * @return The state is a value ranging from -32768 to 32767. + */ +extern DECLSPEC Sint16 SDLCALL SDL_JoystickGetAxis(SDL_Joystick *joystick, int axis); + +/** + * @name Hat Positions + * The return value of SDL_JoystickGetHat() is one of the following 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 + * + * @param[in] hat The hat indices start at index 0. + */ +extern DECLSPEC Uint8 SDLCALL SDL_JoystickGetHat(SDL_Joystick *joystick, int hat); + +/** + * Get the ball axis change since the last poll + * + * @param[in] ball The ball indices start at index 0. + * + * @return This returns 0, or -1 if you passed it invalid parameters. + */ +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 + * + * @param[in] button 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 +} +#endif +#include "close_code.h" + +#endif /* _SDL_joystick_h */ |