Mercurial > sdl-ios-xcode
annotate src/joystick/macos/SDL_sysjoystick.c @ 4050:ef815c44c662 SDL-1.2
Warn Visual C++ users if they have a stale configure generated SDL_config.h
author | Sam Lantinga <slouken@libsdl.org> |
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date | Thu, 12 Jul 2007 02:51:58 +0000 |
parents | 92947e3a18db |
children | 782fd950bd46 c121d94672cb a1b03ba2fcd0 |
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0 | 1 /* |
2 SDL - Simple DirectMedia Layer | |
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3 Copyright (C) 1997-2006 Sam Lantinga |
0 | 4 |
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 |
0 | 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. |
0 | 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 | |
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13 Lesser General Public License for more details. |
0 | 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 |
0 | 18 |
19 Sam Lantinga | |
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20 slouken@libsdl.org |
0 | 21 */ |
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22 #include "SDL_config.h" |
0 | 23 |
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24 #ifdef SDL_JOYSTICK_MACOS |
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25 |
0 | 26 /* SDL stuff -- "SDL_sysjoystick.c" |
27 MacOS joystick functions by Frederick Reitberger | |
28 | |
29 The code that follows is meant for SDL. Use at your own risk. | |
30 */ | |
31 | |
32 #include <InputSprocket.h> | |
33 | |
34 #include "SDL_joystick.h" | |
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35 #include "../SDL_sysjoystick.h" |
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36 #include "../SDL_joystick_c.h" |
0 | 37 |
38 | |
39 /* The max number of joysticks we will detect */ | |
40 #define MAX_JOYSTICKS 16 | |
41 /* Limit ourselves to 32 elements per device */ | |
42 #define kMaxReferences 32 | |
43 | |
44 #define ISpSymmetricAxisToFloat(axis) ((((float) axis) - kISpAxisMiddle) / (kISpAxisMaximum-kISpAxisMiddle)) | |
45 #define ISpAsymmetricAxisToFloat(axis) (((float) axis) / (kISpAxisMaximum)) | |
46 | |
47 | |
48 static ISpDeviceReference SYS_Joysticks[MAX_JOYSTICKS]; | |
49 static ISpElementListReference SYS_Elements[MAX_JOYSTICKS]; | |
50 static ISpDeviceDefinition SYS_DevDef[MAX_JOYSTICKS]; | |
51 | |
52 struct joystick_hwdata | |
53 { | |
54 char name[64]; | |
55 /* Uint8 id;*/ | |
56 ISpElementReference refs[kMaxReferences]; | |
57 /* gonna need some sort of mapping info */ | |
58 }; | |
59 | |
60 | |
61 /* Function to scan the system for joysticks. | |
62 * Joystick 0 should be the system default joystick. | |
63 * This function should return the number of available joysticks, or -1 | |
64 * on an unrecoverable fatal error. | |
65 */ | |
66 int SDL_SYS_JoystickInit(void) | |
67 { | |
68 static ISpDeviceClass classes[4] = { | |
69 kISpDeviceClass_Joystick, | |
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70 #if kISpDeviceClass_Gamepad |
0 | 71 kISpDeviceClass_Gamepad, |
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72 #endif |
0 | 73 kISpDeviceClass_Wheel, |
74 0 | |
75 }; | |
76 OSErr err; | |
77 int i; | |
78 UInt32 count, numJoysticks; | |
79 | |
80 if ( (Ptr)0 == (Ptr)ISpStartup ) { | |
81 SDL_SetError("InputSprocket not installed"); | |
82 return -1; // InputSprocket not installed | |
83 } | |
84 | |
85 if( (Ptr)0 == (Ptr)ISpGetVersion ) { | |
86 SDL_SetError("InputSprocket not version 1.1 or newer"); | |
87 return -1; // old version of ISp (not at least 1.1) | |
88 } | |
89 | |
90 ISpStartup(); | |
91 | |
92 /* Get all the joysticks */ | |
93 numJoysticks = 0; | |
94 for ( i=0; classes[i]; ++i ) { | |
95 count = 0; | |
96 err = ISpDevices_ExtractByClass( | |
97 classes[i], | |
98 MAX_JOYSTICKS-numJoysticks, | |
99 &count, | |
100 &SYS_Joysticks[numJoysticks]); | |
101 numJoysticks += count; | |
102 } | |
103 | |
104 for(i = 0; i < numJoysticks; i++) | |
105 { | |
106 ISpDevice_GetDefinition( | |
107 SYS_Joysticks[i], sizeof(ISpDeviceDefinition), | |
108 &SYS_DevDef[i]); | |
109 | |
110 err = ISpElementList_New( | |
111 0, NULL, | |
112 &SYS_Elements[i], 0); | |
113 | |
114 if (err) { | |
115 SDL_OutOfMemory(); | |
116 return -1; | |
117 } | |
118 | |
119 ISpDevice_GetElementList( | |
120 SYS_Joysticks[i], | |
121 &SYS_Elements[i]); | |
122 } | |
123 | |
124 ISpDevices_Deactivate(numJoysticks, SYS_Joysticks); | |
125 | |
126 return numJoysticks; | |
127 } | |
128 | |
129 /* Function to get the device-dependent name of a joystick */ | |
130 const char *SDL_SYS_JoystickName(int index) | |
131 { | |
132 static char name[64]; | |
133 int len; | |
134 | |
135 /* convert pascal string to c-string */ | |
136 len = SYS_DevDef[index].deviceName[0]; | |
137 if ( len >= sizeof(name) ) { | |
138 len = (sizeof(name) - 1); | |
139 } | |
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140 SDL_memcpy(name, &SYS_DevDef[index].deviceName[1], len); |
0 | 141 name[len] = '\0'; |
142 | |
143 return name; | |
144 } | |
145 | |
146 /* Function to open a joystick for use. | |
147 The joystick to open is specified by the index field of the joystick. | |
148 This should fill the nbuttons and naxes fields of the joystick structure. | |
149 It returns 0, or -1 if there is an error. | |
150 */ | |
151 int SDL_SYS_JoystickOpen(SDL_Joystick *joystick) | |
152 { | |
153 int index; | |
154 UInt32 count, gotCount, count2; | |
155 long numAxis, numButtons, numHats, numBalls; | |
156 | |
157 count = kMaxReferences; | |
158 count2 = 0; | |
159 numAxis = numButtons = numHats = numBalls = 0; | |
160 | |
161 index = joystick->index; | |
162 | |
163 /* allocate memory for system specific hardware data */ | |
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164 joystick->hwdata = (struct joystick_hwdata *) SDL_malloc(sizeof(*joystick->hwdata)); |
0 | 165 if (joystick->hwdata == NULL) |
166 { | |
167 SDL_OutOfMemory(); | |
168 return(-1); | |
169 } | |
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170 SDL_memset(joystick->hwdata, 0, sizeof(*joystick->hwdata)); |
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171 SDL_strlcpy(joystick->hwdata->name, SDL_SYS_JoystickName(index), SDL_arraysize(joystick->hwdata->name)); |
0 | 172 joystick->name = joystick->hwdata->name; |
173 | |
174 ISpElementList_ExtractByKind( | |
175 SYS_Elements[index], | |
176 kISpElementKind_Axis, | |
177 count, | |
178 &gotCount, | |
179 joystick->hwdata->refs); | |
180 | |
181 numAxis = gotCount; | |
182 count -= gotCount; | |
183 count2 += gotCount; | |
184 | |
185 ISpElementList_ExtractByKind( | |
186 SYS_Elements[index], | |
187 kISpElementKind_DPad, | |
188 count, | |
189 &gotCount, | |
190 &(joystick->hwdata->refs[count2])); | |
191 | |
192 numHats = gotCount; | |
193 count -= gotCount; | |
194 count2 += gotCount; | |
195 | |
196 ISpElementList_ExtractByKind( | |
197 SYS_Elements[index], | |
198 kISpElementKind_Button, | |
199 count, | |
200 &gotCount, | |
201 &(joystick->hwdata->refs[count2])); | |
202 | |
203 numButtons = gotCount; | |
204 count -= gotCount; | |
205 count2 += gotCount; | |
206 | |
207 joystick->naxes = numAxis; | |
208 joystick->nhats = numHats; | |
209 joystick->nballs = numBalls; | |
210 joystick->nbuttons = numButtons; | |
211 | |
212 ISpDevices_Activate( | |
213 1, | |
214 &SYS_Joysticks[index]); | |
215 | |
216 return 0; | |
217 } | |
218 | |
219 /* Function to update the state of a joystick - called as a device poll. | |
220 * This function shouldn't update the joystick structure directly, | |
221 * but instead should call SDL_PrivateJoystick*() to deliver events | |
222 * and update joystick device state. | |
223 */ | |
224 void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick) | |
225 { | |
226 int i, j; | |
227 ISpAxisData a; | |
228 ISpDPadData b; | |
229 //ISpDeltaData c; | |
230 ISpButtonData d; | |
231 | |
232 for(i = 0, j = 0; i < joystick->naxes; i++, j++) | |
233 { | |
234 Sint16 value; | |
235 | |
236 ISpElement_GetSimpleState( | |
237 joystick->hwdata->refs[j], | |
238 &a); | |
239 value = (ISpSymmetricAxisToFloat(a)* 32767.0); | |
240 if ( value != joystick->axes[i] ) { | |
241 SDL_PrivateJoystickAxis(joystick, i, value); | |
242 } | |
243 } | |
244 | |
245 for(i = 0; i < joystick->nhats; i++, j++) | |
246 { | |
247 Uint8 pos; | |
248 | |
249 ISpElement_GetSimpleState( | |
250 joystick->hwdata->refs[j], | |
251 &b); | |
252 switch(b) { | |
253 case kISpPadIdle: | |
254 pos = SDL_HAT_CENTERED; | |
255 break; | |
256 case kISpPadLeft: | |
257 pos = SDL_HAT_LEFT; | |
258 break; | |
259 case kISpPadUpLeft: | |
260 pos = SDL_HAT_LEFTUP; | |
261 break; | |
262 case kISpPadUp: | |
263 pos = SDL_HAT_UP; | |
264 break; | |
265 case kISpPadUpRight: | |
266 pos = SDL_HAT_RIGHTUP; | |
267 break; | |
268 case kISpPadRight: | |
269 pos = SDL_HAT_RIGHT; | |
270 break; | |
271 case kISpPadDownRight: | |
272 pos = SDL_HAT_RIGHTDOWN; | |
273 break; | |
274 case kISpPadDown: | |
275 pos = SDL_HAT_DOWN; | |
276 break; | |
277 case kISpPadDownLeft: | |
278 pos = SDL_HAT_LEFTDOWN; | |
279 break; | |
280 } | |
281 if ( pos != joystick->hats[i] ) { | |
282 SDL_PrivateJoystickHat(joystick, i, pos); | |
283 } | |
284 } | |
285 | |
286 for(i = 0; i < joystick->nballs; i++, j++) | |
287 { | |
288 /* ignore balls right now */ | |
289 } | |
290 | |
291 for(i = 0; i < joystick->nbuttons; i++, j++) | |
292 { | |
293 ISpElement_GetSimpleState( | |
294 joystick->hwdata->refs[j], | |
295 &d); | |
296 if ( d != joystick->buttons[i] ) { | |
297 SDL_PrivateJoystickButton(joystick, i, d); | |
298 } | |
299 } | |
300 } | |
301 | |
302 /* Function to close a joystick after use */ | |
303 void SDL_SYS_JoystickClose(SDL_Joystick *joystick) | |
304 { | |
305 int index; | |
306 | |
307 index = joystick->index; | |
308 | |
309 ISpDevices_Deactivate( | |
310 1, | |
311 &SYS_Joysticks[index]); | |
312 } | |
313 | |
314 /* Function to perform any system-specific joystick related cleanup */ | |
315 void SDL_SYS_JoystickQuit(void) | |
316 { | |
317 ISpShutdown(); | |
318 } | |
319 | |
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320 #endif /* SDL_JOYSTICK_MACOS */ |