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annotate src/joystick/nds/SDL_sysjoystick.c @ 3976:8582c6a5ca16 SDL-1.2

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Added initial support for Nintendo DS, based on the work by Troy Davis (GPF)
author Sam Lantinga <slouken@libsdl.org>
date Mon, 25 Jun 2007 00:50:20 +0000
parents
children a1b03ba2fcd0
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3976
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 /* This is the system specific header for the SDL joystick API */
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25 #include <nds.h>
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26 //#include <nds/registers_alt.h>
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27
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28 #include "SDL_error.h"
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29 #include "SDL_events.h"
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30 #include "SDL_joystick.h"
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31 #include "../SDL_sysjoystick.h"
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32 #include "../SDL_joystick_c.h"
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33
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34 #include "../../video/nds/SDL_ndsevents_c.h"
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35
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36 /* Function to scan the system for joysticks.
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37 * This function should set SDL_numjoysticks to the number of available
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38 * joysticks. Joystick 0 should be the system default joystick.
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39 * It should return 0, or -1 on an unrecoverable fatal error.
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40 */
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41 int SDL_SYS_JoystickInit(void)
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42 {
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43 SDL_numjoysticks = 1;
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44 //keysInit();
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45
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46 return(1);
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47 }
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48
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49 /* Function to get the device-dependent name of a joystick */
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50 const char *SDL_SYS_JoystickName(int index)
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51 {
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52 if(!index)
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53 return "NDS builtin joypad";
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54 SDL_SetError("No joystick available with that index");
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55 return (NULL);
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56 }
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57
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58 /* Function to open a joystick for use.
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59 The joystick to open is specified by the index field of the joystick.
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60 This should fill the nbuttons and naxes fields of the joystick structure.
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61 It returns 0, or -1 if there is an error.
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62 */
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63 int SDL_SYS_JoystickOpen(SDL_Joystick *joystick)
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64 {
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65 joystick->nbuttons=8;
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66 joystick->nhats=0;
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67 joystick->nballs=0;
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68 joystick->naxes=2;
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69 return 0;
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70 }
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71
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72
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73 /* Function to update the state of a joystick - called as a device poll.
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74 * This function shouldn't update the joystick structure directly,
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75 * but instead should call SDL_PrivateJoystick*() to deliver events
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76 * and update joystick device state.
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77 */
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78
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79 int prevbutton=0;
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80 int prevkey=0;
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81
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82 int dc=0;int ldc=0;
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83 u32 keysd,keysu=0;
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84 void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick)
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85 {
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86 //dc=keysd;
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87 //if (dc)
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88 //{
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89 //fprintf(stderr,"heartbeat= %d\n",REG_VCOUNT);
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90 //swiWaitForVBlank();
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91 //scanKeys();
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92 //keysd = keysDown();
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93 //keysu = keysUp();
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94 //ldc=keysd;
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95
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96 //}
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97 /*if (prevkey && prevbutton)
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98 {
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99 scanKeys();
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100 }
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101 */
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102
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103 //scanKeys();
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104 keysd = keysDown();
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105 keysu = keysUp();
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106
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107
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108 short ax=0,v=0,h=0;
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109 if((keysd&KEY_UP)) {ax=1;v=-10;SDL_PrivateJoystickAxis(joystick,ax,v);prevkey=KEY_UP;}//fprintf(stderr,"KEY_UP\n");}
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110 if((keysd&KEY_DOWN)) {ax=1;v=10;SDL_PrivateJoystickAxis(joystick,ax,v);prevkey=KEY_DOWN;}//fprintf(stderr,"KEY_DOWN\n");}
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111 if((keysd&KEY_LEFT)) {ax=0;h=-10;SDL_PrivateJoystickAxis(joystick,ax,h);prevkey=KEY_LEFT;}//fprintf(stderr,"KEY_LEFT\n");}
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112 if((keysd&KEY_RIGHT)) {ax=0;h=10;SDL_PrivateJoystickAxis(joystick,ax,h);prevkey=KEY_RIGHT;}//fprintf(stderr,"KEY_RIGHT\n");}
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113
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114 if((keysu&KEY_UP)) {ax=1;v=0;SDL_PrivateJoystickAxis(joystick,ax,v);prevkey=0;}//fprintf(stderr,"KEY_UP\n");}
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115 if((keysu&KEY_DOWN)) {ax=1;v=0;SDL_PrivateJoystickAxis(joystick,ax,v);prevkey=0;}//fprintf(stderr,"KEY_DOWN\n");}
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116 if((keysu&KEY_LEFT)) {ax=0;h=0;SDL_PrivateJoystickAxis(joystick,ax,h);prevkey=0;}//fprintf(stderr,"KEY_LEFT\n");}
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117 if((keysu&KEY_RIGHT)) {ax=0;h=0;SDL_PrivateJoystickAxis(joystick,ax,h);prevkey=0;}//fprintf(stderr,"KEY_RIGHT\n");}
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118
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119 if((keysd&KEY_A)) {SDL_PrivateJoystickButton(joystick,0,SDL_PRESSED);prevbutton=KEY_A;}
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120 if((keysd&KEY_B)) {SDL_PrivateJoystickButton(joystick,1,SDL_PRESSED);prevbutton=KEY_B;}
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121 if((keysd&KEY_X)) {SDL_PrivateJoystickButton(joystick,2,SDL_PRESSED);prevbutton=KEY_X;}
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122 if((keysd&KEY_Y)) {SDL_PrivateJoystickButton(joystick,3,SDL_PRESSED);prevbutton=KEY_Y;}
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123 if((keysd&KEY_SELECT)) {SDL_PrivateJoystickButton(joystick,6,SDL_PRESSED);prevbutton=KEY_SELECT;}
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124 if((keysd&KEY_START)) {SDL_PrivateJoystickButton(joystick,7,SDL_PRESSED);prevbutton=KEY_START;}
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125 if((keysd&KEY_L)) {SDL_PrivateJoystickButton(joystick,4,SDL_PRESSED);prevbutton=KEY_L;}
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126 if((keysd&KEY_R)) {SDL_PrivateJoystickButton(joystick,5,SDL_PRESSED);prevbutton=KEY_R;}
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127
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128 if((keysu&KEY_A)) {SDL_PrivateJoystickButton(joystick,0,SDL_RELEASED);prevbutton=0;}
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129 if((keysu&KEY_B)) {SDL_PrivateJoystickButton(joystick,1,SDL_RELEASED);prevbutton=0;}
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130 if((keysu&KEY_X)) {SDL_PrivateJoystickButton(joystick,2,SDL_RELEASED);prevbutton=0;}
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131 if((keysu&KEY_Y)) {SDL_PrivateJoystickButton(joystick,3,SDL_RELEASED);prevbutton=0;}
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132 if((keysu&KEY_SELECT)) {SDL_PrivateJoystickButton(joystick,6,SDL_RELEASED);prevbutton=0;}
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133 if((keysu&KEY_START)) {SDL_PrivateJoystickButton(joystick,7,SDL_RELEASED);prevbutton=0;}
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134 if((keysu&KEY_L)) {SDL_PrivateJoystickButton(joystick,4,SDL_RELEASED);prevbutton=0;}
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135 if((keysu&KEY_R)) {SDL_PrivateJoystickButton(joystick,5,SDL_RELEASED);prevbutton=0;}
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136
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137
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138
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139 }
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140
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141 /* Function to close a joystick after use */
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142 void SDL_SYS_JoystickClose(SDL_Joystick *joystick)
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143 {
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144 }
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145
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146 /* Function to perform any system-specific joystick related cleanup */
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147 void SDL_SYS_JoystickQuit(void)
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148 {
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149 }
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150