annotate src/joystick/nds/SDL_sysjoystick.c @ 4582:a17fbd25767b

It seems that the off-screen buffers (or pixmaps) only need to be cleared while initializing.
author Sunny Sachanandani <sunnysachanandani@gmail.com>
date Wed, 02 Jun 2010 11:55:40 +0530
parents f7b03b6838cb
children bb2e32f5a556
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2010 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
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23 #include "SDL_config.h"
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24
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25 #ifdef SDL_JOYSTICK_NDS
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26
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27 /* This is the system specific header for the SDL joystick API */
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28 #include <nds.h>
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29 #include <stdio.h> /* For the definition of NULL */
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30
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31 #include "SDL_error.h"
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32 #include "SDL_events.h"
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33 #include "SDL_joystick.h"
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34 #include "SDL_sysjoystick.h"
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35 #include "SDL_joystick_c.h"
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36
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37 #include "../../video/nds/SDL_ndsevents_c.h"
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38
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39 /* Function to scan the system for joysticks.
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40 * This function should set SDL_numjoysticks to the number of available
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41 * joysticks. Joystick 0 should be the system default joystick.
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42 * It should return 0, or -1 on an unrecoverable fatal error.
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43 */
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44 int
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45 SDL_SYS_JoystickInit(void)
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46 {
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47 SDL_numjoysticks = 1;
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48
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49 return (1);
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50 }
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51
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52 /* Function to get the device-dependent name of a joystick */
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53 const char *
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54 SDL_SYS_JoystickName(int index)
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55 {
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56 if (!index)
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57 return "NDS builtin joypad";
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58 SDL_SetError("No joystick available with that index");
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59 return (NULL);
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60 }
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61
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62 /* Function to open a joystick for use.
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63 The joystick to open is specified by the index field of the joystick.
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64 This should fill the nbuttons and naxes fields of the joystick structure.
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65 It returns 0, or -1 if there is an error.
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66 */
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67 int
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68 SDL_SYS_JoystickOpen(SDL_Joystick * joystick)
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69 {
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70 joystick->nbuttons = 8;
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71 joystick->nhats = 0;
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72 joystick->nballs = 0;
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73 joystick->naxes = 2;
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74 return 0;
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75 }
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76
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77
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78 /* Function to update the state of a joystick - called as a device poll.
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79 * This function shouldn't update the joystick structure directly,
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80 * but instead should call SDL_PrivateJoystick*() to deliver events
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81 * and update joystick device state.
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82 */
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83 void
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84 SDL_SYS_JoystickUpdate(SDL_Joystick * joystick)
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85 {
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86 u32 keysd, keysu;
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87 int magnitude = 16384;
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88
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89 /*scanKeys(); - this is done in PumpEvents, because touch uses it too */
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90 keysd = keysDown();
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91 keysu = keysUp();
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92
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93 if ((keysd & KEY_UP)) {
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94 SDL_PrivateJoystickAxis(joystick, 1, -magnitude);
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95 }
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96 if ((keysd & KEY_DOWN)) {
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97 SDL_PrivateJoystickAxis(joystick, 1, magnitude);
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98 }
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99 if ((keysd & KEY_LEFT)) {
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100 SDL_PrivateJoystickAxis(joystick, 0, -magnitude);
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101 }
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102 if ((keysd & KEY_RIGHT)) {
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103 SDL_PrivateJoystickAxis(joystick, 0, magnitude);
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104 }
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105
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106 if ((keysu & (KEY_UP | KEY_DOWN))) {
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107 SDL_PrivateJoystickAxis(joystick, 1, 0);
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108 }
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109
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110 if ((keysu & (KEY_LEFT | KEY_RIGHT))) {
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111 SDL_PrivateJoystickAxis(joystick, 0, 0);
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112 }
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113
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114 if ((keysd & KEY_A)) {
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115 SDL_PrivateJoystickButton(joystick, 0, SDL_PRESSED);
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116 }
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117
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118 if ((keysd & KEY_B)) {
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119 SDL_PrivateJoystickButton(joystick, 1, SDL_PRESSED);
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120 }
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121
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122 if ((keysd & KEY_X)) {
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123 SDL_PrivateJoystickButton(joystick, 2, SDL_PRESSED);
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124 }
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125
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126 if ((keysd & KEY_Y)) {
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127 SDL_PrivateJoystickButton(joystick, 3, SDL_PRESSED);
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128 }
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129
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130 if ((keysd & KEY_L)) {
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131 SDL_PrivateJoystickButton(joystick, 4, SDL_PRESSED);
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132 }
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133
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134 if ((keysd & KEY_R)) {
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135 SDL_PrivateJoystickButton(joystick, 5, SDL_PRESSED);
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136 }
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137
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138 if ((keysd & KEY_SELECT)) {
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139 SDL_PrivateJoystickButton(joystick, 6, SDL_PRESSED);
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140 }
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141
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142 if ((keysd & KEY_START)) {
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143 SDL_PrivateJoystickButton(joystick, 7, SDL_PRESSED);
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144 }
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145
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146 if ((keysu & KEY_A)) {
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147 SDL_PrivateJoystickButton(joystick, 0, SDL_RELEASED);
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148 }
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149
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150 if ((keysu & KEY_B)) {
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151 SDL_PrivateJoystickButton(joystick, 1, SDL_RELEASED);
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152 }
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153
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154 if ((keysu & KEY_X)) {
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155 SDL_PrivateJoystickButton(joystick, 2, SDL_RELEASED);
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156 }
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157
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158 if ((keysu & KEY_Y)) {
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159 SDL_PrivateJoystickButton(joystick, 3, SDL_RELEASED);
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160 }
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161
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162 if ((keysu & KEY_L)) {
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163 SDL_PrivateJoystickButton(joystick, 4, SDL_RELEASED);
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164 }
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165
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166 if ((keysu & KEY_R)) {
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167 SDL_PrivateJoystickButton(joystick, 5, SDL_RELEASED);
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168 }
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169
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170 if ((keysu & KEY_SELECT)) {
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171 SDL_PrivateJoystickButton(joystick, 6, SDL_RELEASED);
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172 }