Mercurial > sdl-ios-xcode
annotate src/joystick/macos/SDL_sysjoystick.c @ 297:f6ffac90895c
Updated copyright information for 2002
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Wed, 06 Mar 2002 11:23:08 +0000 |
| parents | e8157fcb3114 |
| children | b8d311d90021 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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f6ffac90895c
Updated copyright information for 2002
Sam Lantinga <slouken@libsdl.org>
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3 Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
| 6 modify it under the terms of the GNU Library General Public | |
| 7 License as published by the Free Software Foundation; either | |
| 8 version 2 of the License, or (at your option) any later version. | |
| 9 | |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 Library General Public License for more details. | |
| 14 | |
| 15 You should have received a copy of the GNU Library General Public | |
| 16 License along with this library; if not, write to the Free | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 | |
| 19 Sam Lantinga | |
|
252
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Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
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|
20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 #ifdef SAVE_RCSID | |
| 24 static char rcsid = | |
| 25 "@(#) $Id$"; | |
| 26 #endif | |
| 27 | |
| 28 /* SDL stuff -- "SDL_sysjoystick.c" | |
| 29 MacOS joystick functions by Frederick Reitberger | |
| 30 | |
| 31 The code that follows is meant for SDL. Use at your own risk. | |
| 32 */ | |
| 33 | |
| 34 #include <string.h> | |
| 35 | |
| 36 #include <InputSprocket.h> | |
| 37 | |
| 38 #include "SDL_error.h" | |
| 39 #include "SDL_joystick.h" | |
| 40 #include "SDL_sysjoystick.h" | |
| 41 #include "SDL_joystick_c.h" | |
| 42 | |
| 43 | |
| 44 /* The max number of joysticks we will detect */ | |
| 45 #define MAX_JOYSTICKS 16 | |
| 46 /* Limit ourselves to 32 elements per device */ | |
| 47 #define kMaxReferences 32 | |
| 48 | |
| 49 #define ISpSymmetricAxisToFloat(axis) ((((float) axis) - kISpAxisMiddle) / (kISpAxisMaximum-kISpAxisMiddle)) | |
| 50 #define ISpAsymmetricAxisToFloat(axis) (((float) axis) / (kISpAxisMaximum)) | |
| 51 | |
| 52 | |
| 53 static ISpDeviceReference SYS_Joysticks[MAX_JOYSTICKS]; | |
| 54 static ISpElementListReference SYS_Elements[MAX_JOYSTICKS]; | |
| 55 static ISpDeviceDefinition SYS_DevDef[MAX_JOYSTICKS]; | |
| 56 | |
| 57 struct joystick_hwdata | |
| 58 { | |
| 59 char name[64]; | |
| 60 /* Uint8 id;*/ | |
| 61 ISpElementReference refs[kMaxReferences]; | |
| 62 /* gonna need some sort of mapping info */ | |
| 63 }; | |
| 64 | |
| 65 | |
| 66 /* Function to scan the system for joysticks. | |
| 67 * Joystick 0 should be the system default joystick. | |
| 68 * This function should return the number of available joysticks, or -1 | |
| 69 * on an unrecoverable fatal error. | |
| 70 */ | |
| 71 int SDL_SYS_JoystickInit(void) | |
| 72 { | |
| 73 static ISpDeviceClass classes[4] = { | |
| 74 kISpDeviceClass_Joystick, | |
| 75 kISpDeviceClass_Gamepad, | |
| 76 kISpDeviceClass_Wheel, | |
| 77 0 | |
| 78 }; | |
| 79 OSErr err; | |
| 80 int i; | |
| 81 UInt32 count, numJoysticks; | |
| 82 | |
| 83 if ( (Ptr)0 == (Ptr)ISpStartup ) { | |
| 84 SDL_SetError("InputSprocket not installed"); | |
| 85 return -1; // InputSprocket not installed | |
| 86 } | |
| 87 | |
| 88 if( (Ptr)0 == (Ptr)ISpGetVersion ) { | |
| 89 SDL_SetError("InputSprocket not version 1.1 or newer"); | |
| 90 return -1; // old version of ISp (not at least 1.1) | |
| 91 } | |
| 92 | |
| 93 ISpStartup(); | |
| 94 | |
| 95 /* Get all the joysticks */ | |
| 96 numJoysticks = 0; | |
| 97 for ( i=0; classes[i]; ++i ) { | |
| 98 count = 0; | |
| 99 err = ISpDevices_ExtractByClass( | |
| 100 classes[i], | |
| 101 MAX_JOYSTICKS-numJoysticks, | |
| 102 &count, | |
| 103 &SYS_Joysticks[numJoysticks]); | |
| 104 numJoysticks += count; | |
| 105 } | |
| 106 | |
| 107 for(i = 0; i < numJoysticks; i++) | |
| 108 { | |
| 109 ISpDevice_GetDefinition( | |
| 110 SYS_Joysticks[i], sizeof(ISpDeviceDefinition), | |
| 111 &SYS_DevDef[i]); | |
| 112 | |
| 113 err = ISpElementList_New( | |
| 114 0, NULL, | |
| 115 &SYS_Elements[i], 0); | |
| 116 | |
| 117 if (err) { | |
| 118 SDL_OutOfMemory(); | |
| 119 return -1; | |
| 120 } | |
| 121 | |
| 122 ISpDevice_GetElementList( | |
| 123 SYS_Joysticks[i], | |
| 124 &SYS_Elements[i]); | |
| 125 } | |
| 126 | |
| 127 ISpDevices_Deactivate(numJoysticks, SYS_Joysticks); | |
| 128 | |
| 129 return numJoysticks; | |
| 130 } | |
| 131 | |
| 132 /* Function to get the device-dependent name of a joystick */ | |
| 133 const char *SDL_SYS_JoystickName(int index) | |
| 134 { | |
| 135 static char name[64]; | |
| 136 int len; | |
| 137 | |
| 138 /* convert pascal string to c-string */ | |
| 139 len = SYS_DevDef[index].deviceName[0]; | |
| 140 if ( len >= sizeof(name) ) { | |
| 141 len = (sizeof(name) - 1); | |
| 142 } | |
| 143 memcpy(name, &SYS_DevDef[index].deviceName[1], len); | |
| 144 name[len] = '\0'; | |
| 145 | |
| 146 return name; | |
| 147 } | |
| 148 | |
| 149 /* Function to open a joystick for use. | |
| 150 The joystick to open is specified by the index field of the joystick. | |
| 151 This should fill the nbuttons and naxes fields of the joystick structure. | |
| 152 It returns 0, or -1 if there is an error. | |
| 153 */ | |
| 154 int SDL_SYS_JoystickOpen(SDL_Joystick *joystick) | |
| 155 { | |
| 156 int index; | |
| 157 UInt32 count, gotCount, count2; | |
| 158 long numAxis, numButtons, numHats, numBalls; | |
| 159 | |
| 160 count = kMaxReferences; | |
| 161 count2 = 0; | |
| 162 numAxis = numButtons = numHats = numBalls = 0; | |
| 163 | |
| 164 index = joystick->index; | |
| 165 | |
| 166 /* allocate memory for system specific hardware data */ | |
| 167 joystick->hwdata = (struct joystick_hwdata *) malloc(sizeof(*joystick->hwdata)); | |
| 168 if (joystick->hwdata == NULL) | |
| 169 { | |
| 170 SDL_OutOfMemory(); | |
| 171 return(-1); | |
| 172 } | |
| 173 memset(joystick->hwdata, 0, sizeof(*joystick->hwdata)); | |
| 174 strcpy(joystick->hwdata->name, SDL_SYS_JoystickName(index)); | |
| 175 joystick->name = joystick->hwdata->name; | |
| 176 | |
| 177 ISpElementList_ExtractByKind( | |
| 178 SYS_Elements[index], | |
| 179 kISpElementKind_Axis, | |
| 180 count, | |
| 181 &gotCount, | |
| 182 joystick->hwdata->refs); | |
| 183 | |
| 184 numAxis = gotCount; | |
| 185 count -= gotCount; | |
| 186 count2 += gotCount; | |
| 187 | |
| 188 ISpElementList_ExtractByKind( | |
| 189 SYS_Elements[index], | |
| 190 kISpElementKind_DPad, | |
| 191 count, | |
| 192 &gotCount, | |
| 193 &(joystick->hwdata->refs[count2])); | |
| 194 | |
| 195 numHats = gotCount; | |
| 196 count -= gotCount; | |
| 197 count2 += gotCount; | |
| 198 | |
| 199 ISpElementList_ExtractByKind( | |
| 200 SYS_Elements[index], | |
| 201 kISpElementKind_Button, | |
| 202 count, | |
| 203 &gotCount, | |
| 204 &(joystick->hwdata->refs[count2])); | |
| 205 | |
| 206 numButtons = gotCount; | |
| 207 count -= gotCount; | |
| 208 count2 += gotCount; | |
| 209 | |
| 210 joystick->naxes = numAxis; | |
| 211 joystick->nhats = numHats; | |
| 212 joystick->nballs = numBalls; | |
| 213 joystick->nbuttons = numButtons; | |
| 214 | |
| 215 ISpDevices_Activate( | |
| 216 1, | |
| 217 &SYS_Joysticks[index]); | |
| 218 | |
| 219 return 0; | |
| 220 } | |
| 221 | |
| 222 /* Function to update the state of a joystick - called as a device poll. | |
| 223 * This function shouldn't update the joystick structure directly, | |
| 224 * but instead should call SDL_PrivateJoystick*() to deliver events | |
| 225 * and update joystick device state. | |
| 226 */ | |
| 227 void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick) | |
| 228 { | |
| 229 int i, j; | |
| 230 ISpAxisData a; | |
| 231 ISpDPadData b; | |
| 232 //ISpDeltaData c; | |
| 233 ISpButtonData d; | |
| 234 | |
| 235 for(i = 0, j = 0; i < joystick->naxes; i++, j++) | |
| 236 { | |
| 237 Sint16 value; | |
| 238 | |
| 239 ISpElement_GetSimpleState( | |
| 240 joystick->hwdata->refs[j], | |
| 241 &a); | |
| 242 value = (ISpSymmetricAxisToFloat(a)* 32767.0); | |
| 243 if ( value != joystick->axes[i] ) { | |
| 244 SDL_PrivateJoystickAxis(joystick, i, value); | |
| 245 } | |
| 246 } | |
| 247 | |
| 248 for(i = 0; i < joystick->nhats; i++, j++) | |
| 249 { | |
| 250 Uint8 pos; | |
| 251 | |
| 252 ISpElement_GetSimpleState( | |
| 253 joystick->hwdata->refs[j], | |
| 254 &b); | |
| 255 switch(b) { | |
| 256 case kISpPadIdle: | |
| 257 pos = SDL_HAT_CENTERED; | |
| 258 break; | |
| 259 case kISpPadLeft: | |
| 260 pos = SDL_HAT_LEFT; | |
| 261 break; | |
| 262 case kISpPadUpLeft: | |
| 263 pos = SDL_HAT_LEFTUP; | |
| 264 break; | |
| 265 case kISpPadUp: | |
| 266 pos = SDL_HAT_UP; | |
| 267 break; | |
| 268 case kISpPadUpRight: | |
| 269 pos = SDL_HAT_RIGHTUP; | |
| 270 break; | |
| 271 case kISpPadRight: | |
| 272 pos = SDL_HAT_RIGHT; | |
| 273 break; | |
| 274 case kISpPadDownRight: | |
| 275 pos = SDL_HAT_RIGHTDOWN; | |
| 276 break; | |
| 277 case kISpPadDown: | |
| 278 pos = SDL_HAT_DOWN; | |
| 279 break; | |
| 280 case kISpPadDownLeft: | |
| 281 pos = SDL_HAT_LEFTDOWN; | |
| 282 break; | |
| 283 } | |
| 284 if ( pos != joystick->hats[i] ) { | |
| 285 SDL_PrivateJoystickHat(joystick, i, pos); | |
| 286 } | |
| 287 } | |
| 288 | |
| 289 for(i = 0; i < joystick->nballs; i++, j++) | |
| 290 { | |
| 291 /* ignore balls right now */ | |
| 292 } | |
| 293 | |
| 294 for(i = 0; i < joystick->nbuttons; i++, j++) | |
| 295 { | |
| 296 ISpElement_GetSimpleState( | |
| 297 joystick->hwdata->refs[j], | |
| 298 &d); | |
| 299 if ( d != joystick->buttons[i] ) { | |
| 300 SDL_PrivateJoystickButton(joystick, i, d); | |
| 301 } | |
| 302 } | |
| 303 } | |
| 304 | |
| 305 /* Function to close a joystick after use */ | |
| 306 void SDL_SYS_JoystickClose(SDL_Joystick *joystick) | |
| 307 { | |
| 308 int index; | |
| 309 | |
| 310 index = joystick->index; | |
| 311 | |
| 312 ISpDevices_Deactivate( | |
| 313 1, | |
| 314 &SYS_Joysticks[index]); | |
| 315 } | |
| 316 | |
| 317 /* Function to perform any system-specific joystick related cleanup */ | |
| 318 void SDL_SYS_JoystickQuit(void) | |
| 319 { | |
| 320 ISpShutdown(); | |
| 321 } | |
| 322 |