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annotate src/joystick/dc/SDL_sysjoystick.c @ 4389:c6c3a6e7db46 SDL-1.2

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Fixed bug #899 Jeremiah Morris 2009-12-09 16:23:50 PST Re-enable mouseLocation workaround on 10.4, 10.5 OS X systems before 10.6 have a bug with [NSEvent mouseLocation] if the screen resolution changes. SDL_QuartzVideo.m contains a workaround for this bug, but it was placed inside an #ifdef in revision 4762. The comment reads, "I'm gambling they fixed this by 10.4." After seeing this bug on several Tiger and Leopard systems (both PPC and Intel), I can confirm that it's not fixed until 10.6. The workaround doesn't compile for x86_64/10.6, so I can understand why it was segregated, but it needs to remain in place for the i386 and ppc versions. The workaround causes no problems under 10.6, even though it's not necessary there. Patch is attached with one method of keeping the workaround active on the systems that need it.
author Sam Lantinga <slouken@libsdl.org>
date Fri, 11 Dec 2009 15:11:49 +0000
parents a1b03ba2fcd0
children
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 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 SDL_SYS_JoystickInit(void)
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57 {
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58 int numdevs;
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59
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60 int p,u;
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61
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62 numdevs = 0;
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63 for(p=0;p<MAPLE_PORT_COUNT;p++) {
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64 for(u=0;u<MAPLE_UNIT_COUNT;u++) {
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65 if (maple_device_func(p,u)&MAPLE_FUNC_CONTROLLER) {
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66 SYS_Joystick_addr[numdevs] = maple_addr(p,u);
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67 numdevs++;
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68 }
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69 }
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70 }
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71
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72 return(numdevs);
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73 }
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74
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75 /* Function to get the device-dependent name of a joystick */
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76 const char *SDL_SYS_JoystickName(int index)
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77 {
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78 maple_device_t *dev;
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79 if (maple_compat_resolve(SYS_Joystick_addr[index],&dev,MAPLE_FUNC_CONTROLLER)!=0) return NULL;
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80 return dev->info.product_name;
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81 }
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82
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83 /* Function to open a joystick for use.
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84 The joystick to open is specified by the index field of the joystick.
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85 This should fill the nbuttons and naxes fields of the joystick structure.
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86 It returns 0, or -1 if there is an error.
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87 */
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88 int SDL_SYS_JoystickOpen(SDL_Joystick *joystick)
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89 {
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90 /* allocate memory for system specific hardware data */
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91 joystick->hwdata = (struct joystick_hwdata *) SDL_malloc(sizeof(*joystick->hwdata));
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92 if (joystick->hwdata == NULL)
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93 {
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94 SDL_OutOfMemory();
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95 return(-1);
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96 }
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97 SDL_memset(joystick->hwdata, 0, sizeof(*joystick->hwdata));
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98
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99 /* fill nbuttons, naxes, and nhats fields */
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100 joystick->nbuttons = MAX_BUTTONS;
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101 joystick->naxes = MAX_AXES;
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102 joystick->nhats = MAX_HATS;
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103 return(0);
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104 }
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105
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106
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107 /* Function to update the state of a joystick - called as a device poll.
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108 * This function shouldn't update the joystick structure directly,
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109 * but instead should call SDL_PrivateJoystick*() to deliver events
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110 * and update joystick device state.
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111 */
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112
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113 void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick)
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114 {
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115 const int sdl_buttons[] = {
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116 CONT_C,
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117 CONT_B,
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118 CONT_A,
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119 CONT_START,
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120 CONT_Z,
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121 CONT_Y,
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122 CONT_X,
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123 CONT_D
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124 };
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125
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126 uint8 addr;
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127 cont_cond_t cond,*prev_cond;
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128 int buttons,prev_buttons,i,changed;
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129
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130 addr = SYS_Joystick_addr[joystick->index];
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131 if (cont_get_cond(addr,&cond)<0) return;
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132
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133 buttons = cond.buttons;
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134 prev_buttons = joystick->hwdata->prev_buttons;
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135 changed = buttons^prev_buttons;
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136
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137 if ((changed)&(CONT_DPAD_UP|CONT_DPAD_DOWN|CONT_DPAD_LEFT|CONT_DPAD_RIGHT)) {
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138 int hat = SDL_HAT_CENTERED;
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139 if (buttons&CONT_DPAD_UP) hat|=SDL_HAT_UP;
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140 if (buttons&CONT_DPAD_DOWN) hat|=SDL_HAT_DOWN;
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141 if (buttons&CONT_DPAD_LEFT) hat|=SDL_HAT_LEFT;
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142 if (buttons&CONT_DPAD_RIGHT) hat|=SDL_HAT_RIGHT;
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143 SDL_PrivateJoystickHat(joystick, 0, hat);
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144 }
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145 if ((changed)&(CONT_DPAD2_UP|CONT_DPAD2_DOWN|CONT_DPAD2_LEFT|CONT_DPAD2_RIGHT)) {
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146 int hat = SDL_HAT_CENTERED;
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147 if (buttons&CONT_DPAD2_UP) hat|=SDL_HAT_UP;
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148 if (buttons&CONT_DPAD2_DOWN) hat|=SDL_HAT_DOWN;
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149 if (buttons&CONT_DPAD2_LEFT) hat|=SDL_HAT_LEFT;
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150 if (buttons&CONT_DPAD2_RIGHT) hat|=SDL_HAT_RIGHT;
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151 SDL_PrivateJoystickHat(joystick, 1, hat);
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152 }
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153
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154 for(i=0;i<sizeof(sdl_buttons)/sizeof(sdl_buttons[0]);i++) {
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155 if (changed & sdl_buttons[i]) {
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156 SDL_PrivateJoystickButton(joystick, i, (buttons & sdl_buttons[i])?SDL_PRESSED:SDL_RELEASED);
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157 }
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158 }
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159
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160 prev_cond = &joystick->hwdata->prev_cond;
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161 if (cond.joyx!=prev_cond->joyx)
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162 SDL_PrivateJoystickAxis(joystick, 0, cond.joyx-128);
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163 if (cond.joyy!=prev_cond->joyy)
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164 SDL_PrivateJoystickAxis(joystick, 1, cond.joyy-128);
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165 if (cond.rtrig!=prev_cond->rtrig)
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166 SDL_PrivateJoystickAxis(joystick, 2, cond.rtrig);
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167 if (cond.ltrig!=prev_cond->ltrig)
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168 SDL_PrivateJoystickAxis(joystick, 3, cond.ltrig);
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169 if (cond.joy2x!=prev_cond->joy2x)
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170 SDL_PrivateJoystickAxis(joystick, 4, cond.joy2x-128);
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171 if (cond.joy2y!=prev_cond->joy2y)
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172 SDL_PrivateJoystickAxis(joystick, 5, cond.joy2y-128);
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173
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174 joystick->hwdata->prev_buttons = buttons;
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175 joystick->hwdata->prev_cond = cond;
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176 }
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177
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178 /* Function to close a joystick after use */
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179 void SDL_SYS_JoystickClose(SDL_Joystick *joystick)
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180 {
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181 if (joystick->hwdata != NULL) {
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182 /* free system specific hardware data */
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183 SDL_free(joystick->hwdata);
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184 }
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185 }
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186
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187 /* Function to perform any system-specific joystick related cleanup */
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188 void SDL_SYS_JoystickQuit(void)
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189 {
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190 return;
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191 }
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192
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193 #endif /* SDL_JOYSTICK_DC */