src/joystick/nds/SDL_sysjoystick.c

   1 /*
   2     SDL - Simple DirectMedia Layer
   3     Copyright (C) 1997-2009 Sam Lantinga
   4
   5     This library is free software; you can redistribute it and/or
   6     modify it under the terms of the GNU Lesser General Public
   7     License as published by the Free Software Foundation; either
   8     version 2.1 of the License, or (at your option) any later version.
   9
  10     This library is distributed in the hope that it will be useful,
  11     but WITHOUT ANY WARRANTY; without even the implied warranty of
  12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13     Lesser General Public License for more details.
  14
  15     You should have received a copy of the GNU Lesser General Public
  16     License along with this library; if not, write to the Free Software
  17     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  18
  19     Sam Lantinga
  20     slouken@libsdl.org
  21 */
  22 #include "SDL_config.h"
  23
  24 /* This is the system specific header for the SDL joystick API */
  25 #include <nds.h>
  26 //#include <nds/registers_alt.h>
  27
  28 #include "SDL_error.h"
  29 #include "SDL_events.h"
  30 #include "SDL_joystick.h"
  31 #include "../SDL_sysjoystick.h"
  32 #include "../SDL_joystick_c.h"
  33
  34 #include "../../video/nds/SDL_ndsevents_c.h"
  35
  36 /* Function to scan the system for joysticks.
  37  * This function should set SDL_numjoysticks to the number of available
  38  * joysticks.  Joystick 0 should be the system default joystick.
  39  * It should return 0, or -1 on an unrecoverable fatal error.
  40  */
  41 int SDL_SYS_JoystickInit(void)
  42 {
  43         SDL_numjoysticks = 1;
  44     //keysInit();
  45
  46         return(1);
  47 }
  48
  49 /* Function to get the device-dependent name of a joystick */
  50 const char *SDL_SYS_JoystickName(int index)
  51 {
  52         if(!index)
  53                 return "NDS builtin joypad";
  54         SDL_SetError("No joystick available with that index");
  55         return (NULL);
  56 }
  57
  58 /* Function to open a joystick for use.
  59    The joystick to open is specified by the index field of the joystick.
  60    This should fill the nbuttons and naxes fields of the joystick structure.
  61    It returns 0, or -1 if there is an error.
  62  */
  63 int SDL_SYS_JoystickOpen(SDL_Joystick *joystick)
  64 {
  65         joystick->nbuttons=8;
  66         joystick->nhats=0;
  67         joystick->nballs=0;
  68         joystick->naxes=2;
  69         return 0;
  70 }
  71
  72
  73 /* Function to update the state of a joystick - called as a device poll.
  74  * This function shouldn't update the joystick structure directly,
  75  * but instead should call SDL_PrivateJoystick*() to deliver events
  76  * and update joystick device state.
  77  */
  78
  79 int prevbutton=0;
  80 int prevkey=0;
  81
  82 int dc=0;int ldc=0;
  83 u32 keysd,keysu=0;
  84 void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick)
  85 {
  86     //dc=keysd;
  87         //if (dc)
  88         //{
  89                 //fprintf(stderr,"heartbeat= %d\n",REG_VCOUNT);
  90                 //swiWaitForVBlank();
  91                 //scanKeys();
  92                 //keysd = keysDown();
  93                 //keysu = keysUp();
  94                 //ldc=keysd;
  95
  96         //}
  97         /*if (prevkey && prevbutton)
  98         {
  99                 scanKeys();
 100         }
 101         */
 102
 103         //scanKeys();
 104                 keysd = keysDown();
 105                 keysu = keysUp();
 106
 107
 108         short ax=0,v=0,h=0;
 109         if((keysd&KEY_UP)) {ax=1;v=-10;SDL_PrivateJoystickAxis(joystick,ax,v);prevkey=KEY_UP;}//fprintf(stderr,"KEY_UP\n");}
 110         if((keysd&KEY_DOWN)) {ax=1;v=10;SDL_PrivateJoystickAxis(joystick,ax,v);prevkey=KEY_DOWN;}//fprintf(stderr,"KEY_DOWN\n");}
 111         if((keysd&KEY_LEFT)) {ax=0;h=-10;SDL_PrivateJoystickAxis(joystick,ax,h);prevkey=KEY_LEFT;}//fprintf(stderr,"KEY_LEFT\n");}
 112         if((keysd&KEY_RIGHT)) {ax=0;h=10;SDL_PrivateJoystickAxis(joystick,ax,h);prevkey=KEY_RIGHT;}//fprintf(stderr,"KEY_RIGHT\n");}
 113
 114         if((keysu&KEY_UP)) {ax=1;v=0;SDL_PrivateJoystickAxis(joystick,ax,v);prevkey=0;}//fprintf(stderr,"KEY_UP\n");}
 115         if((keysu&KEY_DOWN)) {ax=1;v=0;SDL_PrivateJoystickAxis(joystick,ax,v);prevkey=0;}//fprintf(stderr,"KEY_DOWN\n");}
 116         if((keysu&KEY_LEFT)) {ax=0;h=0;SDL_PrivateJoystickAxis(joystick,ax,h);prevkey=0;}//fprintf(stderr,"KEY_LEFT\n");}
 117         if((keysu&KEY_RIGHT)) {ax=0;h=0;SDL_PrivateJoystickAxis(joystick,ax,h);prevkey=0;}//fprintf(stderr,"KEY_RIGHT\n");}
 118
 119         if((keysd&KEY_A))               {SDL_PrivateJoystickButton(joystick,0,SDL_PRESSED);prevbutton=KEY_A;}
 120         if((keysd&KEY_B))               {SDL_PrivateJoystickButton(joystick,1,SDL_PRESSED);prevbutton=KEY_B;}
 121         if((keysd&KEY_X))               {SDL_PrivateJoystickButton(joystick,2,SDL_PRESSED);prevbutton=KEY_X;}
 122         if((keysd&KEY_Y))               {SDL_PrivateJoystickButton(joystick,3,SDL_PRESSED);prevbutton=KEY_Y;}
 123         if((keysd&KEY_SELECT))  {SDL_PrivateJoystickButton(joystick,6,SDL_PRESSED);prevbutton=KEY_SELECT;}
 124         if((keysd&KEY_START))   {SDL_PrivateJoystickButton(joystick,7,SDL_PRESSED);prevbutton=KEY_START;}
 125         if((keysd&KEY_L))               {SDL_PrivateJoystickButton(joystick,4,SDL_PRESSED);prevbutton=KEY_L;}
 126         if((keysd&KEY_R))               {SDL_PrivateJoystickButton(joystick,5,SDL_PRESSED);prevbutton=KEY_R;}
 127
 128         if((keysu&KEY_A))               {SDL_PrivateJoystickButton(joystick,0,SDL_RELEASED);prevbutton=0;}
 129         if((keysu&KEY_B))               {SDL_PrivateJoystickButton(joystick,1,SDL_RELEASED);prevbutton=0;}
 130         if((keysu&KEY_X))               {SDL_PrivateJoystickButton(joystick,2,SDL_RELEASED);prevbutton=0;}
 131         if((keysu&KEY_Y))               {SDL_PrivateJoystickButton(joystick,3,SDL_RELEASED);prevbutton=0;}
 132         if((keysu&KEY_SELECT))  {SDL_PrivateJoystickButton(joystick,6,SDL_RELEASED);prevbutton=0;}
 133         if((keysu&KEY_START))   {SDL_PrivateJoystickButton(joystick,7,SDL_RELEASED);prevbutton=0;}
 134         if((keysu&KEY_L))               {SDL_PrivateJoystickButton(joystick,4,SDL_RELEASED);prevbutton=0;}
 135         if((keysu&KEY_R))               {SDL_PrivateJoystickButton(joystick,5,SDL_RELEASED);prevbutton=0;}
 136
 137
 138
 139 }
 140
 141 /* Function to close a joystick after use */
 142 void SDL_SYS_JoystickClose(SDL_Joystick *joystick)
 143 {
 144 }
 145
 146 /* Function to perform any system-specific joystick related cleanup */
 147 void SDL_SYS_JoystickQuit(void)
 148 {
 149 }
 150