src/joystick/nds/SDL_sysjoystick.c
author Darren Alton <dalton@stevens.edu>
Thu, 12 Jun 2008 02:38:49 +0000
branchgsoc2008_nds
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child 2673 24a6b3588eac
permissions -rw-r--r--
some changes to the dummy driver for debug purposes that should be reverted. most importantly, commenting out a check for an env. var.
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/*
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    SDL - Simple DirectMedia Layer
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    Copyright (C) 1997, 1998, 1999, 2000, 2001  Sam Lantinga
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    This library is free software; you can redistribute it and/or
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    modify it under the terms of the GNU Library General Public
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    License as published by the Free Software Foundation; either
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    version 2 of the License, or (at your option) any later version.
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    This library is distributed in the hope that it will be useful,
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    but WITHOUT ANY WARRANTY; without even the implied warranty of
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    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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    Library General Public License for more details.
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    You should have received a copy of the GNU Library General Public
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    License along with this library; if not, write to the Free
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    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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    Sam Lantinga
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    slouken@devolution.com
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*/
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#ifdef SAVE_RCSID
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static char rcsid =
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    "@(#) $Id: SDL_sysjoystick.c,v 1.2 2001/04/26 16:50:17 hercules Exp $";
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#endif
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/* This is the system specific header for the SDL joystick API */
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#include <nds.h>
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//#include <nds/registers_alt.h>
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#include <stdio.h>              /* For the definition of NULL */
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#include "SDL_error.h"
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#include "SDL_joystick.h"
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#include "SDL_sysjoystick.h"
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#include "SDL_joystick_c.h"
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#include "../../video/nds/SDL_ndsevents_c.h"
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/* Function to scan the system for joysticks.
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 * This function should set SDL_numjoysticks to the number of available
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 * joysticks.  Joystick 0 should be the system default joystick.
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 * It should return 0, or -1 on an unrecoverable fatal error.
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 */
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int
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SDL_SYS_JoystickInit(void)
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{
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    SDL_numjoysticks = 1;
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        //keysInit();
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        return (1);
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}
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/* Function to get the device-dependent name of a joystick */
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const char *
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SDL_SYS_JoystickName(int index)
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{
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    if (!index)
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        return "NDS builtin joypad";
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    SDL_SetError("No joystick available with that index");
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    return (NULL);
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}
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/* Function to open a joystick for use.
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   The joystick to open is specified by the index field of the joystick.
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   This should fill the nbuttons and naxes fields of the joystick structure.
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   It returns 0, or -1 if there is an error.
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 */
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int
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SDL_SYS_JoystickOpen(SDL_Joystick * joystick)
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{
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    joystick->nbuttons = 8;
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    joystick->nhats = 0;
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    joystick->nballs = 0;
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    joystick->naxes = 2;
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    return 0;
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}
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/* Function to update the state of a joystick - called as a device poll.
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 * This function shouldn't update the joystick structure directly,
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 * but instead should call SDL_PrivateJoystick*() to deliver events
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 * and update joystick device state.
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 */
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int prevbutton = 0;
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int prevkey = 0;
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int dc = NULL;
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int ldc = 0;
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u32 keysd, keysu = NULL;
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void
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SDL_SYS_JoystickUpdate(SDL_Joystick * joystick)
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{
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        //dc=keysd;
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        //if (dc != NULL)
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        //{
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        //fprintf(stderr,"heartbeat= %d\n",REG_VCOUNT); 
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        //swiWaitForVBlank();
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        //scanKeys();
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        //keysd = keysDown(); 
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        //keysu = keysUp();
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        //ldc=keysd;
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        //}
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        /*if (prevkey !=NULL && prevbutton !=NULL)
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           {
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           scanKeys();
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           }
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         */ 
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        //scanKeys();
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        keysd = keysDown();
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keysu = keysUp();
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short ax = 0, v = 0, h = 0;
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    if ((keysd & KEY_UP)) {
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        ax = 1;
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        v = -10;
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        SDL_PrivateJoystickAxis(joystick, ax, v);
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        prevkey = KEY_UP;
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    }                           //fprintf(stderr,"KEY_UP\n");}
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    if ((keysd & KEY_DOWN)) {
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        ax = 1;
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        v = 10;
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        SDL_PrivateJoystickAxis(joystick, ax, v);
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        prevkey = KEY_DOWN;
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    }                           //fprintf(stderr,"KEY_DOWN\n");}
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    if ((keysd & KEY_LEFT)) {
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        ax = 0;
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        h = -10;
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        SDL_PrivateJoystickAxis(joystick, ax, h);
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        prevkey = KEY_LEFT;
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    }                           //fprintf(stderr,"KEY_LEFT\n");}
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    if ((keysd & KEY_RIGHT)) {
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        ax = 0;
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        h = 10;
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        SDL_PrivateJoystickAxis(joystick, ax, h);
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        prevkey = KEY_RIGHT;
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    }                           //fprintf(stderr,"KEY_RIGHT\n");}
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if ((keysu & KEY_UP)) {
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        ax = 1;
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        v = 0;
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        SDL_PrivateJoystickAxis(joystick, ax, v);
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        prevkey = NULL;
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    }                           //fprintf(stderr,"KEY_UP\n");}
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    if ((keysu & KEY_DOWN)) {
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        ax = 1;
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        v = 0;
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        SDL_PrivateJoystickAxis(joystick, ax, v);
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        prevkey = NULL;
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    }                           //fprintf(stderr,"KEY_DOWN\n");}
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    if ((keysu & KEY_LEFT)) {
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        ax = 0;
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        h = 0;
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        SDL_PrivateJoystickAxis(joystick, ax, h);
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        prevkey = NULL;
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    }                           //fprintf(stderr,"KEY_LEFT\n");}
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    if ((keysu & KEY_RIGHT)) {
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        ax = 0;
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        h = 0;
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        SDL_PrivateJoystickAxis(joystick, ax, h);
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        prevkey = NULL;
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    }                           //fprintf(stderr,"KEY_RIGHT\n");}
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if ((keysd & KEY_A)) {
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        SDL_PrivateJoystickButton(joystick, 0, SDL_PRESSED);
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        prevbutton = KEY_A;
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    }
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if ((keysd & KEY_B)) {
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        SDL_PrivateJoystickButton(joystick, 1, SDL_PRESSED);
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        prevbutton = KEY_B;
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    }
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if ((keysd & KEY_X)) {
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        SDL_PrivateJoystickButton(joystick, 2, SDL_PRESSED);
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        prevbutton = KEY_X;
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    }
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if ((keysd & KEY_Y)) {
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        SDL_PrivateJoystickButton(joystick, 3, SDL_PRESSED);
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        prevbutton = KEY_Y;
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    }
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if ((keysd & KEY_SELECT)) {
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        SDL_PrivateJoystickButton(joystick, 6, SDL_PRESSED);
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        prevbutton = KEY_SELECT;
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    }
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   184
    
if ((keysd & KEY_START)) {
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        SDL_PrivateJoystickButton(joystick, 7, SDL_PRESSED);
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        prevbutton = KEY_START;
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    }
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if ((keysd & KEY_L)) {
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        SDL_PrivateJoystickButton(joystick, 4, SDL_PRESSED);
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        prevbutton = KEY_L;
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    }
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   192
    
if ((keysd & KEY_R)) {
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        SDL_PrivateJoystickButton(joystick, 5, SDL_PRESSED);
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        prevbutton = KEY_R;
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   195
    }
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   196
    

if ((keysu & KEY_A)) {
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        SDL_PrivateJoystickButton(joystick, 0, SDL_RELEASED);
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        prevbutton = NULL;
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    }
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   200
    
if ((keysu & KEY_B)) {
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        SDL_PrivateJoystickButton(joystick, 1, SDL_RELEASED);
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        prevbutton = NULL;
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   203
    }
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   204
    
if ((keysu & KEY_X)) {
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        SDL_PrivateJoystickButton(joystick, 2, SDL_RELEASED);
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        prevbutton = NULL;
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   207
    }
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   208
    
if ((keysu & KEY_Y)) {
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        SDL_PrivateJoystickButton(joystick, 3, SDL_RELEASED);
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        prevbutton = NULL;
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   211
    }
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   212
    
if ((keysu & KEY_SELECT)) {
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        SDL_PrivateJoystickButton(joystick, 6, SDL_RELEASED);
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        prevbutton = NULL;
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    }
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   216
    
if ((keysu & KEY_START)) {
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        SDL_PrivateJoystickButton(joystick, 7, SDL_RELEASED);
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        prevbutton = NULL;
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    }
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   220
    
if ((keysu & KEY_L)) {
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        SDL_PrivateJoystickButton(joystick, 4, SDL_RELEASED);
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        prevbutton = NULL;
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   223
    }
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   224
    
if ((keysu & KEY_R)) {
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        SDL_PrivateJoystickButton(joystick, 5, SDL_RELEASED);
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        prevbutton = NULL;
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   227
    }
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}
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/* Function to close a joystick after use */
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void
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SDL_SYS_JoystickClose(SDL_Joystick * joystick)
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{
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}
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/* Function to perform any system-specific joystick related cleanup */
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void
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SDL_SYS_JoystickQuit(void)
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{
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}