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comparison src/joystick/iphoneos/SDL_sysjoystick.m @ 2348:dd32c95434f4 gsoc2008_iphone

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Just the sysjoystick file for the iPhone accelerometer. It doesn't reveal anything under NDA, but I just wanted to make sure that adding files to the repository is working under XCode right now.
author Holmes Futrell <hfutrell@umail.ucsb.edu>
date Fri, 11 Jul 2008 00:54:04 +0000
parents
children 49b243db2e04
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2347:1971045cbfc1 2348:dd32c95434f4
1 /*
2 SDL - Simple DirectMedia Layer
3 Copyright (C) 1997-2006 Sam Lantinga
4
5 This library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 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 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with this library; if not, write to the Free Software
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
18
19 Sam Lantinga
20 slouken@libsdl.org
21 */
22 #include "SDL_config.h"
23
24 /* This is the system specific header for the SDL joystick API */
25
26 #include "SDL_joystick.h"
27 #include "../SDL_sysjoystick.h"
28 #include "../SDL_joystick_c.h"
29 #import "SDLUIAccelerationDelegate.h"
30
31 const char *accelerometerName = "iPhone accelerometer";
32
33 /* Function to scan the system for joysticks.
34 * This function should set SDL_numjoysticks to the number of available
35 * joysticks. Joystick 0 should be the system default joystick.
36 * It should return 0, or -1 on an unrecoverable fatal error.
37 */
38 int
39 SDL_SYS_JoystickInit(void)
40 {
41 SDL_numjoysticks = 1;
42 return (1);
43 }
44
45 /* Function to get the device-dependent name of a joystick */
46 const char *
47 SDL_SYS_JoystickName(int index)
48 {
49 switch(index) {
50 case 0:
51 return accelerometerName;
52 default:
53 SDL_SetError("No joystick available with that index");
54 return NULL;
55 }
56 }
57
58 /* Function to open a joystick for use.
59 The joystick to open is specified by the index field of the joystick.
60 This should fill the nbuttons and naxes fields of the joystick structure.
61 It returns 0, or -1 if there is an error.
62 */
63 int
64 SDL_SYS_JoystickOpen(SDL_Joystick * joystick)
65 {
66 if (joystick->index == 0) {
67 joystick->naxes = 3;
68 joystick->nhats = 0;
69 joystick->nballs = 0;
70 joystick->nbuttons = 0;
71 joystick->name = accelerometerName;
72 [[SDLUIAccelerationDelegate sharedDelegate] startup];
73 return 0;
74 }
75 else {
76 SDL_SetError("No joystick available with that index");
77 return (-1);
78 }
79
80 }
81
82 /* Function to update the state of a joystick - called as a device poll.
83 * This function shouldn't update the joystick structure directly,
84 * but instead should call SDL_PrivateJoystick*() to deliver events
85 * and update joystick device state.
86 */
87 void
88 SDL_SYS_JoystickUpdate(SDL_Joystick * joystick)
89 {
90
91 Sint16 orientation[3];
92 [[SDLUIAccelerationDelegate sharedDelegate] getLastOrientation: orientation];
93
94 if ([[SDLUIAccelerationDelegate sharedDelegate] hasNewData]) {
95
96 [[SDLUIAccelerationDelegate sharedDelegate] setHasNewData: NO];
97
98 SDL_PrivateJoystickAxis(joystick, 0, orientation[0]);
99 SDL_PrivateJoystickAxis(joystick, 1, orientation[1]);
100 SDL_PrivateJoystickAxis(joystick, 2, orientation[2]);
101
102 }
103
104 return;
105 }
106
107 /* Function to close a joystick after use */
108 void
109 SDL_SYS_JoystickClose(SDL_Joystick * joystick)
110 {
111 if (joystick->index == 0 && [[SDLUIAccelerationDelegate sharedDelegate] isRunning]) {
112 [[SDLUIAccelerationDelegate sharedDelegate] shutdown];
113 }
114 SDL_SetError("No joystick open with that index");
115
116 return;
117 }
118
119 /* Function to perform any system-specific joystick related cleanup */
120 void
121 SDL_SYS_JoystickQuit(void)
122 {
123 return;
124 }
125 /* vi: set ts=4 sw=4 expandtab: */