src/joystick/nds/SDL_sysjoystick.c
author Darren Alton <dalton@stevens.edu>
Thu, 12 Jun 2008 02:38:49 +0000
branchgsoc2008_nds
changeset 2671 c3e7c0698cbb
parent 2670 6e4669f4db49
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.

/*
    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
*/

#ifdef SAVE_RCSID
static char rcsid =
    "@(#) $Id: SDL_sysjoystick.c,v 1.2 2001/04/26 16:50:17 hercules Exp $";
#endif

/* This is the system specific header for the SDL joystick API */
#include <nds.h>
//#include <nds/registers_alt.h>
#include <stdio.h>              /* For the definition of NULL */

#include "SDL_error.h"
#include "SDL_joystick.h"
#include "SDL_sysjoystick.h"
#include "SDL_joystick_c.h"

#include "../../video/nds/SDL_ndsevents_c.h"

/* Function to scan the system for joysticks.
 * This function should set SDL_numjoysticks to the number of available
 * joysticks.  Joystick 0 should be the system default joystick.
 * It should return 0, or -1 on an unrecoverable fatal error.
 */
int
SDL_SYS_JoystickInit(void)
{
    SDL_numjoysticks = 1;
    
        //keysInit();
        return (1);
}

/* Function to get the device-dependent name of a joystick */
const char *
SDL_SYS_JoystickName(int index)
{
    if (!index)
        return "NDS builtin joypad";
    SDL_SetError("No joystick available with that index");
    return (NULL);
}

/* Function to open a joystick for use.
   The joystick to open is specified by the index field of the joystick.
   This should fill the nbuttons and naxes fields of the joystick structure.
   It returns 0, or -1 if there is an error.
 */
int
SDL_SYS_JoystickOpen(SDL_Joystick * joystick)
{
    joystick->nbuttons = 8;
    joystick->nhats = 0;
    joystick->nballs = 0;
    joystick->naxes = 2;
    return 0;
}


/* Function to update the state of a joystick - called as a device poll.
 * This function shouldn't update the joystick structure directly,
 * but instead should call SDL_PrivateJoystick*() to deliver events
 * and update joystick device state.
 */
int prevbutton = 0;
int prevkey = 0;

int dc = NULL;
int ldc = 0;
u32 keysd, keysu = NULL;
void
SDL_SYS_JoystickUpdate(SDL_Joystick * joystick)
{
    
        //dc=keysd;
        //if (dc != NULL)
        //{
        //fprintf(stderr,"heartbeat= %d\n",REG_VCOUNT); 
        //swiWaitForVBlank();
        //scanKeys();
        //keysd = keysDown(); 
        //keysu = keysUp();
        //ldc=keysd;
        
        //}
        /*if (prevkey !=NULL && prevbutton !=NULL)
           {
           scanKeys();
           }
         */ 
        
        //scanKeys();
        keysd = keysDown();
    
keysu = keysUp();
    

short ax = 0, v = 0, h = 0;
    if ((keysd & KEY_UP)) {
        ax = 1;
        v = -10;
        SDL_PrivateJoystickAxis(joystick, ax, v);
        prevkey = KEY_UP;
    }                           //fprintf(stderr,"KEY_UP\n");}
    if ((keysd & KEY_DOWN)) {
        ax = 1;
        v = 10;
        SDL_PrivateJoystickAxis(joystick, ax, v);
        prevkey = KEY_DOWN;
    }                           //fprintf(stderr,"KEY_DOWN\n");}
    if ((keysd & KEY_LEFT)) {
        ax = 0;
        h = -10;
        SDL_PrivateJoystickAxis(joystick, ax, h);
        prevkey = KEY_LEFT;
    }                           //fprintf(stderr,"KEY_LEFT\n");}
    if ((keysd & KEY_RIGHT)) {
        ax = 0;
        h = 10;
        SDL_PrivateJoystickAxis(joystick, ax, h);
        prevkey = KEY_RIGHT;
    }                           //fprintf(stderr,"KEY_RIGHT\n");}
    
if ((keysu & KEY_UP)) {
        ax = 1;
        v = 0;
        SDL_PrivateJoystickAxis(joystick, ax, v);
        prevkey = NULL;
    }                           //fprintf(stderr,"KEY_UP\n");}
    if ((keysu & KEY_DOWN)) {
        ax = 1;
        v = 0;
        SDL_PrivateJoystickAxis(joystick, ax, v);
        prevkey = NULL;
    }                           //fprintf(stderr,"KEY_DOWN\n");}
    if ((keysu & KEY_LEFT)) {
        ax = 0;
        h = 0;
        SDL_PrivateJoystickAxis(joystick, ax, h);
        prevkey = NULL;
    }                           //fprintf(stderr,"KEY_LEFT\n");}
    if ((keysu & KEY_RIGHT)) {
        ax = 0;
        h = 0;
        SDL_PrivateJoystickAxis(joystick, ax, h);
        prevkey = NULL;
    }                           //fprintf(stderr,"KEY_RIGHT\n");}
    
if ((keysd & KEY_A)) {
        SDL_PrivateJoystickButton(joystick, 0, SDL_PRESSED);
        prevbutton = KEY_A;
    }
    
if ((keysd & KEY_B)) {
        SDL_PrivateJoystickButton(joystick, 1, SDL_PRESSED);
        prevbutton = KEY_B;
    }
    
if ((keysd & KEY_X)) {
        SDL_PrivateJoystickButton(joystick, 2, SDL_PRESSED);
        prevbutton = KEY_X;
    }
    
if ((keysd & KEY_Y)) {
        SDL_PrivateJoystickButton(joystick, 3, SDL_PRESSED);
        prevbutton = KEY_Y;
    }
    
if ((keysd & KEY_SELECT)) {
        SDL_PrivateJoystickButton(joystick, 6, SDL_PRESSED);
        prevbutton = KEY_SELECT;
    }
    
if ((keysd & KEY_START)) {
        SDL_PrivateJoystickButton(joystick, 7, SDL_PRESSED);
        prevbutton = KEY_START;
    }
    
if ((keysd & KEY_L)) {
        SDL_PrivateJoystickButton(joystick, 4, SDL_PRESSED);
        prevbutton = KEY_L;
    }
    
if ((keysd & KEY_R)) {
        SDL_PrivateJoystickButton(joystick, 5, SDL_PRESSED);
        prevbutton = KEY_R;
    }
    

if ((keysu & KEY_A)) {
        SDL_PrivateJoystickButton(joystick, 0, SDL_RELEASED);
        prevbutton = NULL;
    }
    
if ((keysu & KEY_B)) {
        SDL_PrivateJoystickButton(joystick, 1, SDL_RELEASED);
        prevbutton = NULL;
    }
    
if ((keysu & KEY_X)) {
        SDL_PrivateJoystickButton(joystick, 2, SDL_RELEASED);
        prevbutton = NULL;
    }
    
if ((keysu & KEY_Y)) {
        SDL_PrivateJoystickButton(joystick, 3, SDL_RELEASED);
        prevbutton = NULL;
    }
    
if ((keysu & KEY_SELECT)) {
        SDL_PrivateJoystickButton(joystick, 6, SDL_RELEASED);
        prevbutton = NULL;
    }
    
if ((keysu & KEY_START)) {
        SDL_PrivateJoystickButton(joystick, 7, SDL_RELEASED);
        prevbutton = NULL;
    }
    
if ((keysu & KEY_L)) {
        SDL_PrivateJoystickButton(joystick, 4, SDL_RELEASED);
        prevbutton = NULL;
    }
    
if ((keysu & KEY_R)) {
        SDL_PrivateJoystickButton(joystick, 5, SDL_RELEASED);
        prevbutton = NULL;
    }


}

/* Function to close a joystick after use */
void
SDL_SYS_JoystickClose(SDL_Joystick * joystick)
{
}

/* Function to perform any system-specific joystick related cleanup */
void
SDL_SYS_JoystickQuit(void)
{
}