annotate src/joystick/SDL_joystick.c @ 4147:6bdec986f2f6 SDL-1.2

Fix bug 545, by returning early whenever an error occurs when initializing joystick structure
author Patrice Mandin <patmandin@gmail.com>
date Sat, 19 Jul 2008 11:54:55 +0000
parents 97d0966f4bf7
children a1b03ba2fcd0
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 /* This is the joystick API for Simple DirectMedia Layer */
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25
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26 #include "SDL_events.h"
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27 #include "SDL_sysjoystick.h"
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28 #include "SDL_joystick_c.h"
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29 #if !SDL_EVENTS_DISABLED
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30 #include "../events/SDL_events_c.h"
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31 #endif
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32
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33 /* This is used for Quake III Arena */
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34 #if SDL_EVENTS_DISABLED
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35 #define SDL_Lock_EventThread()
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36 #define SDL_Unlock_EventThread()
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37 #endif
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38
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39 Uint8 SDL_numjoysticks = 0;
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40 SDL_Joystick **SDL_joysticks = NULL;
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41 static SDL_Joystick *default_joystick = NULL;
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42
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43 int SDL_JoystickInit(void)
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44 {
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45 int arraylen;
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46 int status;
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47
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48 SDL_numjoysticks = 0;
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49 status = SDL_SYS_JoystickInit();
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50 if ( status >= 0 ) {
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51 arraylen = (status+1)*sizeof(*SDL_joysticks);
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52 SDL_joysticks = (SDL_Joystick **)SDL_malloc(arraylen);
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53 if ( SDL_joysticks == NULL ) {
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54 SDL_numjoysticks = 0;
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55 } else {
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56 SDL_memset(SDL_joysticks, 0, arraylen);
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57 SDL_numjoysticks = status;
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58 }
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59 status = 0;
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60 }
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61 default_joystick = NULL;
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62 return(status);
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63 }
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64
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65 /*
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66 * Count the number of joysticks attached to the system
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67 */
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68 int SDL_NumJoysticks(void)
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69 {
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70 return SDL_numjoysticks;
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71 }
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72
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73 /*
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74 * Get the implementation dependent name of a joystick
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75 */
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76 const char *SDL_JoystickName(int device_index)
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77 {
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78 if ( (device_index < 0) || (device_index >= SDL_numjoysticks) ) {
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79 SDL_SetError("There are %d joysticks available",
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80 SDL_numjoysticks);
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81 return(NULL);
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82 }
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83 return(SDL_SYS_JoystickName(device_index));
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84 }
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85
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86 /*
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87 * Open a joystick for use - the index passed as an argument refers to
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88 * the N'th joystick on the system. This index is the value which will
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89 * identify this joystick in future joystick events.
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90 *
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91 * This function returns a joystick identifier, or NULL if an error occurred.
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92 */
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93 SDL_Joystick *SDL_JoystickOpen(int device_index)
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94 {
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95 int i;
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96 SDL_Joystick *joystick;
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97
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98 if ( (device_index < 0) || (device_index >= SDL_numjoysticks) ) {
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99 SDL_SetError("There are %d joysticks available",
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100 SDL_numjoysticks);
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101 return(NULL);
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102 }
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103
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104 /* If the joystick is already open, return it */
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105 for ( i=0; SDL_joysticks[i]; ++i ) {
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106 if ( device_index == SDL_joysticks[i]->index ) {
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107 joystick = SDL_joysticks[i];
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108 ++joystick->ref_count;
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109 return(joystick);
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110 }
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111 }
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112
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113 /* Create and initialize the joystick */
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114 joystick = (SDL_Joystick *)SDL_malloc((sizeof *joystick));
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115 if ( !joystick ) {
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116 return(NULL);
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117 }
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118
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119 SDL_memset(joystick, 0, (sizeof *joystick));
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120 joystick->index = device_index;
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121 if ( SDL_SYS_JoystickOpen(joystick) < 0 ) {
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122 SDL_free(joystick);
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123 return(NULL);
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124 }
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125
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126 if ( joystick->naxes > 0 ) {
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127 joystick->axes = (Sint16 *)SDL_malloc
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128 (joystick->naxes*sizeof(Sint16));
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129 }
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130 if ( joystick->nhats > 0 ) {
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131 joystick->hats = (Uint8 *)SDL_malloc
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132 (joystick->nhats*sizeof(Uint8));
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133 }
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134 if ( joystick->nballs > 0 ) {
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135 joystick->balls = (struct balldelta *)SDL_malloc
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136 (joystick->nballs*sizeof(*joystick->balls));
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137 }
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138 if ( joystick->nbuttons > 0 ) {
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139 joystick->buttons = (Uint8 *)SDL_malloc
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140 (joystick->nbuttons*sizeof(Uint8));
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141 }
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142 if ( ((joystick->naxes > 0) && !joystick->axes)
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143 || ((joystick->nhats > 0) && !joystick->hats)
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144 || ((joystick->nballs > 0) && !joystick->balls)
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145 || ((joystick->nbuttons > 0) && !joystick->buttons)) {
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146 SDL_OutOfMemory();
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147 SDL_JoystickClose(joystick);
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148 return(NULL);
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149 }
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150
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151 if ( joystick->axes ) {
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152 SDL_memset(joystick->axes, 0,
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153 joystick->naxes*sizeof(Sint16));
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154 }
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155 if ( joystick->hats ) {
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156 SDL_memset(joystick->hats, 0,
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157 joystick->nhats*sizeof(Uint8));
0
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158 }
4147
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159 if ( joystick->balls ) {
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160 SDL_memset(joystick->balls, 0,
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161 joystick->nballs*sizeof(*joystick->balls));
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162 }
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163 if ( joystick->buttons ) {
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164 SDL_memset(joystick->buttons, 0,
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165 joystick->nbuttons*sizeof(Uint8));
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166 }
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167
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168 /* Add joystick to list */
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169 ++joystick->ref_count;
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170 SDL_Lock_EventThread();
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171 for ( i=0; SDL_joysticks[i]; ++i )
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172 /* Skip to next joystick */ ;
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173 SDL_joysticks[i] = joystick;
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174 SDL_Unlock_EventThread();
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175
0
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176 return(joystick);
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177 }
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178
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179 /*
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180 * Returns 1 if the joystick has been opened, or 0 if it has not.
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181 */
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182 int SDL_JoystickOpened(int device_index)
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183 {
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184 int i, opened;
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185
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186 opened = 0;
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187 for ( i=0; SDL_joysticks[i]; ++i ) {
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188 if ( SDL_joysticks[i]->index == (Uint8)device_index ) {
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189 opened = 1;
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190 break;
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191 }
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192 }
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193 return(opened);
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194 }
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195
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196 static int ValidJoystick(SDL_Joystick **joystick)
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197 {
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198 int valid;
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199
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200 if ( *joystick == NULL ) {
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201 *joystick = default_joystick;
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202 }
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203 if ( *joystick == NULL ) {
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204 SDL_SetError("Joystick hasn't been opened yet");
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205 valid = 0;
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206 } else {
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207 valid = 1;
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208 }
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209 return valid;
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210 }
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211
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212 /*
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213 * Get the device index of an opened joystick.
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214 */
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215 int SDL_JoystickIndex(SDL_Joystick *joystick)
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216 {
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217 if ( ! ValidJoystick(&joystick) ) {
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218 return(-1);
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219 }
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220 return(joystick->index);
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221 }
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222
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223 /*
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224 * Get the number of multi-dimensional axis controls on a joystick
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225 */
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226 int SDL_JoystickNumAxes(SDL_Joystick *joystick)
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227 {
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228 if ( ! ValidJoystick(&joystick) ) {
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229 return(-1);
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230 }
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231 return(joystick->naxes);
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232 }
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233
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234 /*
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235 * Get the number of hats on a joystick
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236 */
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237 int SDL_JoystickNumHats(SDL_Joystick *joystick)
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238 {
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239 if ( ! ValidJoystick(&joystick) ) {
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240 return(-1);
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241 }
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242 return(joystick->nhats);
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243 }
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244
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245 /*
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246 * Get the number of trackballs on a joystick
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247 */
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248 int SDL_JoystickNumBalls(SDL_Joystick *joystick)
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249 {
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250 if ( ! ValidJoystick(&joystick) ) {
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251 return(-1);
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252 }
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253 return(joystick->nballs);
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254 }
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255
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256 /*
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257 * Get the number of buttons on a joystick
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258 */
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259 int SDL_JoystickNumButtons(SDL_Joystick *joystick)
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260 {
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261 if ( ! ValidJoystick(&joystick) ) {
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262 return(-1);
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263 }
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264 return(joystick->nbuttons);
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265 }
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266
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267 /*
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268 * Get the current state of an axis control on a joystick
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269 */
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270 Sint16 SDL_JoystickGetAxis(SDL_Joystick *joystick, int axis)
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271 {
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272 Sint16 state;
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273
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274 if ( ! ValidJoystick(&joystick) ) {
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275 return(0);
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276 }
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277 if ( axis < joystick->naxes ) {
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278 state = joystick->axes[axis];
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279 } else {
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280 SDL_SetError("Joystick only has %d axes", joystick->naxes);
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281 state = 0;
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282 }
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283 return(state);
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284 }
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285
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286 /*
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287 * Get the current state of a hat on a joystick
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288 */
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289 Uint8 SDL_JoystickGetHat(SDL_Joystick *joystick, int hat)
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290 {
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291 Uint8 state;
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292
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293 if ( ! ValidJoystick(&joystick) ) {
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294 return(0);
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295 }
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296 if ( hat < joystick->nhats ) {
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297 state = joystick->hats[hat];
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298 } else {
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299 SDL_SetError("Joystick only has %d hats", joystick->nhats);
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300 state = 0;
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301 }
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302 return(state);
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303 }
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304
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305 /*
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diff changeset
306 * Get the ball axis change since the last poll
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diff changeset
307 */
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308 int SDL_JoystickGetBall(SDL_Joystick *joystick, int ball, int *dx, int *dy)
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309 {
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310 int retval;
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311
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312 if ( ! ValidJoystick(&joystick) ) {
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313 return(-1);
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314 }
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315
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316 retval = 0;
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317 if ( ball < joystick->nballs ) {
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318 if ( dx ) {
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parents:
diff changeset
319 *dx = joystick->balls[ball].dx;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
320 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
321 if ( dy ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
322 *dy = joystick->balls[ball].dy;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
323 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
324 joystick->balls[ball].dx = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
325 joystick->balls[ball].dy = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
326 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
327 SDL_SetError("Joystick only has %d balls", joystick->nballs);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
328 retval = -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
329 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
330 return(retval);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
331 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
332
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
333 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
334 * Get the current state of a button on a joystick
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
335 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
336 Uint8 SDL_JoystickGetButton(SDL_Joystick *joystick, int button)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
337 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
338 Uint8 state;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
339
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
340 if ( ! ValidJoystick(&joystick) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
341 return(0);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
342 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
343 if ( button < joystick->nbuttons ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
344 state = joystick->buttons[button];
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
345 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
346 SDL_SetError("Joystick only has %d buttons",joystick->nbuttons);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
347 state = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
348 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
349 return(state);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
350 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
351
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
352 /*
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
353 * Close a joystick previously opened with SDL_JoystickOpen()
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
354 */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
355 void SDL_JoystickClose(SDL_Joystick *joystick)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
356 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
357 int i;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
358
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
359 if ( ! ValidJoystick(&joystick) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
360 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
361 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
362
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
363 /* First decrement ref count */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
364 if ( --joystick->ref_count > 0 ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
365 return;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
366 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
367
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
368 /* Lock the event queue - prevent joystick polling */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
369 SDL_Lock_EventThread();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
370
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
371 if ( joystick == default_joystick ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
372 default_joystick = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
373 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
374 SDL_SYS_JoystickClose(joystick);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
375
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
376 /* Remove joystick from list */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
377 for ( i=0; SDL_joysticks[i]; ++i ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
378 if ( joystick == SDL_joysticks[i] ) {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
379 SDL_memcpy(&SDL_joysticks[i], &SDL_joysticks[i+1],
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
380 (SDL_numjoysticks-i)*sizeof(joystick));
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
381 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
382 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
383 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
384
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
385 /* Let the event thread keep running */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
386 SDL_Unlock_EventThread();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
387
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
388 /* Free the data associated with this joystick */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
389 if ( joystick->axes ) {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
390 SDL_free(joystick->axes);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
391 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
392 if ( joystick->hats ) {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
393 SDL_free(joystick->hats);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
394 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
395 if ( joystick->balls ) {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
396 SDL_free(joystick->balls);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
397 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
398 if ( joystick->buttons ) {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
399 SDL_free(joystick->buttons);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
400 }
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
401 SDL_free(joystick);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
402 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
403
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
404 void SDL_JoystickQuit(void)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
405 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
406 /* Stop the event polling */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
407 SDL_Lock_EventThread();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
408 SDL_numjoysticks = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
409 SDL_Unlock_EventThread();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
410
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
411 /* Quit the joystick setup */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
412 SDL_SYS_JoystickQuit();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
413 if ( SDL_joysticks ) {
1336
3692456e7b0f Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents: 1330
diff changeset
414 SDL_free(SDL_joysticks);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
415 SDL_joysticks = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
416 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
417 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
418
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
419
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
420 /* These are global for SDL_sysjoystick.c and SDL_events.c */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
421
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
422 int SDL_PrivateJoystickAxis(SDL_Joystick *joystick, Uint8 axis, Sint16 value)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
423 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
424 int posted;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
425
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
426 /* Update internal joystick state */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
427 joystick->axes[axis] = value;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
428
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
429 /* Post the event, if desired */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
430 posted = 0;
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
431 #if !SDL_EVENTS_DISABLED
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
432 if ( SDL_ProcessEvents[SDL_JOYAXISMOTION] == SDL_ENABLE ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
433 SDL_Event event;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
434 event.type = SDL_JOYAXISMOTION;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
435 event.jaxis.which = joystick->index;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
436 event.jaxis.axis = axis;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
437 event.jaxis.value = value;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
438 if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
439 posted = 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
440 SDL_PushEvent(&event);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
441 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
442 }
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
443 #endif /* !SDL_EVENTS_DISABLED */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
444 return(posted);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
445 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
446
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
447 int SDL_PrivateJoystickHat(SDL_Joystick *joystick, Uint8 hat, Uint8 value)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
448 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
449 int posted;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
450
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
451 /* Update internal joystick state */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
452 joystick->hats[hat] = value;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
453
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
454 /* Post the event, if desired */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
455 posted = 0;
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
456 #if !SDL_EVENTS_DISABLED
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
457 if ( SDL_ProcessEvents[SDL_JOYHATMOTION] == SDL_ENABLE ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
458 SDL_Event event;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
459 event.jhat.type = SDL_JOYHATMOTION;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
460 event.jhat.which = joystick->index;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
461 event.jhat.hat = hat;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
462 event.jhat.value = value;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
463 if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
464 posted = 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
465 SDL_PushEvent(&event);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
466 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
467 }
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
468 #endif /* !SDL_EVENTS_DISABLED */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
469 return(posted);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
470 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
471
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
472 int SDL_PrivateJoystickBall(SDL_Joystick *joystick, Uint8 ball,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
473 Sint16 xrel, Sint16 yrel)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
474 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
475 int posted;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
476
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
477 /* Update internal mouse state */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
478 joystick->balls[ball].dx += xrel;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
479 joystick->balls[ball].dy += yrel;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
480
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
481 /* Post the event, if desired */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
482 posted = 0;
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
483 #if !SDL_EVENTS_DISABLED
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
484 if ( SDL_ProcessEvents[SDL_JOYBALLMOTION] == SDL_ENABLE ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
485 SDL_Event event;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
486 event.jball.type = SDL_JOYBALLMOTION;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
487 event.jball.which = joystick->index;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
488 event.jball.ball = ball;
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489 event.jball.xrel = xrel;
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490 event.jball.yrel = yrel;
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parents:
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491 if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) {
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492 posted = 1;
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493 SDL_PushEvent(&event);
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494 }
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495 }
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19418e4422cb New configure-based build system. Still work in progress, but much improved
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496 #endif /* !SDL_EVENTS_DISABLED */
0
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497 return(posted);
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parents:
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498 }
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parents:
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499
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500 int SDL_PrivateJoystickButton(SDL_Joystick *joystick, Uint8 button, Uint8 state)
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501 {
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502 int posted;
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503 #if !SDL_EVENTS_DISABLED
0
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504 SDL_Event event;
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parents:
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505
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parents:
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506 switch ( state ) {
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parents:
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507 case SDL_PRESSED:
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508 event.type = SDL_JOYBUTTONDOWN;
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parents:
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509 break;
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510 case SDL_RELEASED:
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511 event.type = SDL_JOYBUTTONUP;
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512 break;
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parents:
diff changeset
513 default:
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parents:
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514 /* Invalid state -- bail */
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515 return(0);
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parents:
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516 }
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19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
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517 #endif /* !SDL_EVENTS_DISABLED */
0
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parents:
diff changeset
518
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519 /* Update internal joystick state */
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520 joystick->buttons[button] = state;
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parents:
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521
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parents:
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522 /* Post the event, if desired */
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parents:
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523 posted = 0;
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19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
524 #if !SDL_EVENTS_DISABLED
0
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parents:
diff changeset
525 if ( SDL_ProcessEvents[event.type] == SDL_ENABLE ) {
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parents:
diff changeset
526 event.jbutton.which = joystick->index;
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parents:
diff changeset
527 event.jbutton.button = button;
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parents:
diff changeset
528 event.jbutton.state = state;
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parents:
diff changeset
529 if ( (SDL_EventOK == NULL) || (*SDL_EventOK)(&event) ) {
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parents:
diff changeset
530 posted = 1;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
531 SDL_PushEvent(&event);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
532 }
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
533 }
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
534 #endif /* !SDL_EVENTS_DISABLED */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
535 return(posted);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
536 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
537
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
538 void SDL_JoystickUpdate(void)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
539 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
540 int i;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
541
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
542 for ( i=0; SDL_joysticks[i]; ++i ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
543 SDL_SYS_JoystickUpdate(SDL_joysticks[i]);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
544 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
545 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
546
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
547 int SDL_JoystickEventState(int state)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
548 {
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
549 #if SDL_EVENTS_DISABLED
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
550 return SDL_IGNORE;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
551 #else
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parents:
diff changeset
552 const Uint8 event_list[] = {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
553 SDL_JOYAXISMOTION, SDL_JOYBALLMOTION, SDL_JOYHATMOTION,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
554 SDL_JOYBUTTONDOWN, SDL_JOYBUTTONUP,
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
555 };
1612
97d0966f4bf7 Fixed some ultra-pedantic gcc warnings
Sam Lantinga <slouken@libsdl.org>
parents: 1402
diff changeset
556 unsigned int i;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
557
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
558 switch (state) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
559 case SDL_QUERY:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
560 state = SDL_IGNORE;
1379
c0a74f199ecf Use only safe string functions
Sam Lantinga <slouken@libsdl.org>
parents: 1361
diff changeset
561 for ( i=0; i<SDL_arraysize(event_list); ++i ) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
562 state = SDL_EventState(event_list[i],SDL_QUERY);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
563 if ( state == SDL_ENABLE ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
564 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
565 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
566 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
567 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
568 default:
1379
c0a74f199ecf Use only safe string functions
Sam Lantinga <slouken@libsdl.org>
parents: 1361
diff changeset
569 for ( i=0; i<SDL_arraysize(event_list); ++i ) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
570 SDL_EventState(event_list[i], state);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
571 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
572 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
573 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
574 return(state);
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
575 #endif /* SDL_EVENTS_DISABLED */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
576 }