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/*
SDL - Simple DirectMedia Layer
Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Sam Lantinga
slouken@devolution.com
*/
/* Include file for SDL joystick event handling */
public import SDL_types;
extern(C):
/* 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 { }
/* Function prototypes */
/*
* Count the number of joysticks attached to the system
*/
int SDL_NumJoysticks();
/*
* 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.
*/
char *SDL_JoystickName(int device_index);
/*
* Open a joystick for use - 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.
*
* This function returns a joystick identifier, or NULL if an error occurred.
*/
SDL_Joystick *SDL_JoystickOpen(int device_index);
/*
* Returns 1 if the joystick has been opened, or 0 if it has not.
*/
int SDL_JoystickOpened(int device_index);
/*
* Get the device index of an opened joystick.
*/
int SDL_JoystickIndex(SDL_Joystick *joystick);
/*
* Get the number of general axis controls on a joystick
*/
int 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.
*/
int SDL_JoystickNumBalls(SDL_Joystick *joystick);
/*
* Get the number of POV hats on a joystick
*/
int SDL_JoystickNumHats(SDL_Joystick *joystick);
/*
* Get the number of buttons on a joystick
*/
int 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.
*/
void SDL_JoystickUpdate();
/*
* 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.
*/
int 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.
*/
Sint16 SDL_JoystickGetAxis(SDL_Joystick *joystick, int axis);
/*
* Get the current state of a POV hat on a joystick
* The return value is one of the following positions:
*/
const uint SDL_HAT_CENTERED = 0x00;
const uint SDL_HAT_UP = 0x01;
const uint SDL_HAT_RIGHT = 0x02;
const uint SDL_HAT_DOWN = 0x04;
const uint SDL_HAT_LEFT = 0x08;
const uint SDL_HAT_RIGHTUP = (SDL_HAT_RIGHT|SDL_HAT_UP);
const uint SDL_HAT_RIGHTDOWN = (SDL_HAT_RIGHT|SDL_HAT_DOWN);
const uint SDL_HAT_LEFTUP = (SDL_HAT_LEFT|SDL_HAT_UP);
const uint SDL_HAT_LEFTDOWN = (SDL_HAT_LEFT|SDL_HAT_DOWN);
/*
* The hat indices start at index 0.
*/
Uint8 SDL_JoystickGetHat(SDL_Joystick *joystick, int hat);
/*
* Get the ball axis change since the last poll
* This returns 0, or -1 if you passed it invalid parameters.
* The ball indices start at index 0.
*/
int 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.
*/
Uint8 SDL_JoystickGetButton(SDL_Joystick *joystick, int button);
/*
* Close a joystick previously opened with SDL_JoystickOpen()
*/
void SDL_JoystickClose(SDL_Joystick *joystick);
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