Mercurial > sdl-ios-xcode
annotate src/joystick/dc/SDL_sysjoystick.c @ 2480:b883974445fc gsoc2008_force_feedback
Some more error reporting.
Added periodic effect.
Confirmed it works.
author | Edgar Simo <bobbens@gmail.com> |
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date | Tue, 01 Jul 2008 09:22:22 +0000 |
parents | c121d94672cb |
children | 99210400e8b9 |
rev | line source |
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1 /* |
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2 SDL - Simple DirectMedia Layer |
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3 Copyright (C) 1997-2006 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 #ifdef SDL_JOYSTICK_DC |
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25 |
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26 #include "SDL_events.h" |
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27 #include "SDL_joystick.h" |
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28 #include "../SDL_sysjoystick.h" |
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29 #include "../SDL_joystick_c.h" |
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30 |
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31 #include <dc/maple.h> |
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32 #include <dc/maple/controller.h> |
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33 |
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34 #define MAX_JOYSTICKS 8 /* only 2 are supported in the multimedia API */ |
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35 #define MAX_AXES 6 /* each joystick can have up to 6 axes */ |
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36 #define MAX_BUTTONS 8 /* and 8 buttons */ |
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37 #define MAX_HATS 2 |
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38 |
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39 #define JOYNAMELEN 8 |
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40 |
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41 /* array to hold joystick ID values */ |
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42 static uint8 SYS_Joystick_addr[MAX_JOYSTICKS]; |
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43 |
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44 /* The private structure used to keep track of a joystick */ |
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45 struct joystick_hwdata |
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46 { |
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47 cont_cond_t prev_cond; |
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48 int prev_buttons; |
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49 }; |
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50 |
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51 /* Function to scan the system for joysticks. |
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52 * This function should set SDL_numjoysticks to the number of available |
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53 * joysticks. Joystick 0 should be the system default joystick. |
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54 * It should return 0, or -1 on an unrecoverable fatal error. |
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55 */ |
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56 int |
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57 SDL_SYS_JoystickInit(void) |
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58 { |
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59 int numdevs; |
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60 |
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61 int p, u; |
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62 |
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63 numdevs = 0; |
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64 for (p = 0; p < MAPLE_PORT_COUNT; p++) { |
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65 for (u = 0; u < MAPLE_UNIT_COUNT; u++) { |
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66 if (maple_device_func(p, u) & MAPLE_FUNC_CONTROLLER) { |
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67 SYS_Joystick_addr[numdevs] = maple_addr(p, u); |
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68 numdevs++; |
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69 } |
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70 } |
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71 } |
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72 |
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73 return (numdevs); |
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74 } |
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75 |
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76 /* Function to get the device-dependent name of a joystick */ |
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77 const char * |
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78 SDL_SYS_JoystickName(int index) |
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79 { |
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80 maple_device_t *dev; |
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81 if (maple_compat_resolve |
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82 (SYS_Joystick_addr[index], &dev, MAPLE_FUNC_CONTROLLER) != 0) |
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83 return NULL; |
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84 return dev->info.product_name; |
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85 } |
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86 |
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87 /* Function to open a joystick for use. |
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88 The joystick to open is specified by the index field of the joystick. |
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89 This should fill the nbuttons and naxes fields of the joystick structure. |
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90 It returns 0, or -1 if there is an error. |
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91 */ |
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92 int |
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93 SDL_SYS_JoystickOpen(SDL_Joystick * joystick) |
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94 { |
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95 /* allocate memory for system specific hardware data */ |
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96 joystick->hwdata = |
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97 (struct joystick_hwdata *) SDL_malloc(sizeof(*joystick->hwdata)); |
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98 if (joystick->hwdata == NULL) { |
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99 SDL_OutOfMemory(); |
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100 return (-1); |
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101 } |
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102 SDL_memset(joystick->hwdata, 0, sizeof(*joystick->hwdata)); |
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103 |
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104 /* fill nbuttons, naxes, and nhats fields */ |
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105 joystick->nbuttons = MAX_BUTTONS; |
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106 joystick->naxes = MAX_AXES; |
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107 joystick->nhats = MAX_HATS; |
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108 return (0); |
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109 } |
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110 |
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111 |
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112 /* Function to update the state of a joystick - called as a device poll. |
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113 * This function shouldn't update the joystick structure directly, |
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114 * but instead should call SDL_PrivateJoystick*() to deliver events |
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115 * and update joystick device state. |
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116 */ |
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117 |
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118 void |
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119 SDL_SYS_JoystickUpdate(SDL_Joystick * joystick) |
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120 { |
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121 const int sdl_buttons[] = { |
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122 CONT_C, |
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123 CONT_B, |
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124 CONT_A, |
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125 CONT_START, |
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126 CONT_Z, |
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127 CONT_Y, |
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128 CONT_X, |
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129 CONT_D |
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130 }; |
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131 |
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132 uint8 addr; |
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133 cont_cond_t cond, *prev_cond; |
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134 int buttons, prev_buttons, i, changed; |
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135 |
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136 addr = SYS_Joystick_addr[joystick->index]; |
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137 if (cont_get_cond(addr, &cond) < 0) |
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138 return; |
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139 |
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140 buttons = cond.buttons; |
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141 prev_buttons = joystick->hwdata->prev_buttons; |
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142 changed = buttons ^ prev_buttons; |
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143 |
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144 if ((changed) & |
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145 (CONT_DPAD_UP | CONT_DPAD_DOWN | CONT_DPAD_LEFT | CONT_DPAD_RIGHT)) { |
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146 int hat = SDL_HAT_CENTERED; |
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147 if (buttons & CONT_DPAD_UP) |
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148 hat |= SDL_HAT_UP; |
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149 if (buttons & CONT_DPAD_DOWN) |
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150 hat |= SDL_HAT_DOWN; |
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151 if (buttons & CONT_DPAD_LEFT) |
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152 hat |= SDL_HAT_LEFT; |
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153 if (buttons & CONT_DPAD_RIGHT) |
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154 hat |= SDL_HAT_RIGHT; |
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155 SDL_PrivateJoystickHat(joystick, 0, hat); |
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156 } |
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157 if ((changed) & |
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158 (CONT_DPAD2_UP | CONT_DPAD2_DOWN | CONT_DPAD2_LEFT | |
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159 CONT_DPAD2_RIGHT)) { |
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160 int hat = SDL_HAT_CENTERED; |
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161 if (buttons & CONT_DPAD2_UP) |
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162 hat |= SDL_HAT_UP; |
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163 if (buttons & CONT_DPAD2_DOWN) |
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164 hat |= SDL_HAT_DOWN; |
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165 if (buttons & CONT_DPAD2_LEFT) |
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166 hat |= SDL_HAT_LEFT; |
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167 if (buttons & CONT_DPAD2_RIGHT) |
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168 hat |= SDL_HAT_RIGHT; |
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169 SDL_PrivateJoystickHat(joystick, 1, hat); |
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170 } |
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171 |
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172 for (i = 0; i < sizeof(sdl_buttons) / sizeof(sdl_buttons[0]); i++) { |
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173 if (changed & sdl_buttons[i]) { |
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174 SDL_PrivateJoystickButton(joystick, i, |
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175 (buttons & sdl_buttons[i]) ? |
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176 SDL_PRESSED : SDL_RELEASED); |
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177 } |
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178 } |
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179 |
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180 prev_cond = &joystick->hwdata->prev_cond; |
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181 if (cond.joyx != prev_cond->joyx) |
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182 SDL_PrivateJoystickAxis(joystick, 0, cond.joyx - 128); |
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183 if (cond.joyy != prev_cond->joyy) |
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184 SDL_PrivateJoystickAxis(joystick, 1, cond.joyy - 128); |
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185 if (cond.rtrig != prev_cond->rtrig) |
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186 SDL_PrivateJoystickAxis(joystick, 2, cond.rtrig); |
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187 if (cond.ltrig != prev_cond->ltrig) |
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188 SDL_PrivateJoystickAxis(joystick, 3, cond.ltrig); |
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189 if (cond.joy2x != prev_cond->joy2x) |
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190 SDL_PrivateJoystickAxis(joystick, 4, cond.joy2x - 128); |
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191 if (cond.joy2y != prev_cond->joy2y) |
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192 SDL_PrivateJoystickAxis(joystick, 5, cond.joy2y - 128); |
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193 |
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194 joystick->hwdata->prev_buttons = buttons; |
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195 joystick->hwdata->prev_cond = cond; |
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196 } |
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197 |
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198 /* Function to close a joystick after use */ |
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199 void |
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200 SDL_SYS_JoystickClose(SDL_Joystick * joystick) |
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201 { |
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202 if (joystick->hwdata != NULL) { |
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203 /* free system specific hardware data */ |
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204 SDL_free(joystick->hwdata); |
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205 } |
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206 } |
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207 |
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208 /* Function to perform any system-specific joystick related cleanup */ |
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209 void |
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210 SDL_SYS_JoystickQuit(void) |
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211 { |
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212 return; |
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213 } |
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214 |
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215 #endif /* SDL_JOYSTICK_DC */ |
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216 /* vi: set ts=4 sw=4 expandtab: */ |