diff options
Diffstat (limited to 'apps/plugins/sdl/src/joystick/beos/SDL_bejoystick.cc')
-rw-r--r-- | apps/plugins/sdl/src/joystick/beos/SDL_bejoystick.cc | 237 |
1 files changed, 237 insertions, 0 deletions
diff --git a/apps/plugins/sdl/src/joystick/beos/SDL_bejoystick.cc b/apps/plugins/sdl/src/joystick/beos/SDL_bejoystick.cc new file mode 100644 index 0000000000..af8a34164b --- /dev/null +++ b/apps/plugins/sdl/src/joystick/beos/SDL_bejoystick.cc | |||
@@ -0,0 +1,237 @@ | |||
1 | /* | ||
2 | SDL - Simple DirectMedia Layer | ||
3 | Copyright (C) 1997-2012 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 | #ifdef SDL_JOYSTICK_BEOS | ||
25 | |||
26 | /* This is the system specific header for the SDL joystick API */ | ||
27 | |||
28 | #include <be/support/String.h> | ||
29 | #include <be/device/Joystick.h> | ||
30 | |||
31 | extern "C" { | ||
32 | |||
33 | #include "SDL_joystick.h" | ||
34 | #include "../SDL_sysjoystick.h" | ||
35 | #include "../SDL_joystick_c.h" | ||
36 | |||
37 | |||
38 | /* The maximum number of joysticks we'll detect */ | ||
39 | #define MAX_JOYSTICKS 16 | ||
40 | |||
41 | /* A list of available joysticks */ | ||
42 | static char *SDL_joyport[MAX_JOYSTICKS]; | ||
43 | static char *SDL_joyname[MAX_JOYSTICKS]; | ||
44 | |||
45 | /* The private structure used to keep track of a joystick */ | ||
46 | struct joystick_hwdata { | ||
47 | BJoystick *stick; | ||
48 | uint8 *new_hats; | ||
49 | int16 *new_axes; | ||
50 | }; | ||
51 | |||
52 | /* Function to scan the system for joysticks. | ||
53 | * This function should set SDL_numjoysticks to the number of available | ||
54 | * joysticks. Joystick 0 should be the system default joystick. | ||
55 | * It should return 0, or -1 on an unrecoverable fatal error. | ||
56 | */ | ||
57 | int SDL_SYS_JoystickInit(void) | ||
58 | { | ||
59 | BJoystick joystick; | ||
60 | int numjoysticks; | ||
61 | int i; | ||
62 | int32 nports; | ||
63 | char name[B_OS_NAME_LENGTH]; | ||
64 | |||
65 | /* Search for attached joysticks */ | ||
66 | nports = joystick.CountDevices(); | ||
67 | numjoysticks = 0; | ||
68 | SDL_memset(SDL_joyport, 0, (sizeof SDL_joyport)); | ||
69 | SDL_memset(SDL_joyname, 0, (sizeof SDL_joyname)); | ||
70 | for ( i=0; (SDL_numjoysticks < MAX_JOYSTICKS) && (i < nports); ++i ) { | ||
71 | if ( joystick.GetDeviceName(i, name) == B_OK ) { | ||
72 | if ( joystick.Open(name) != B_ERROR ) { | ||
73 | BString stick_name; | ||
74 | joystick.GetControllerName(&stick_name); | ||
75 | SDL_joyport[numjoysticks] = strdup(name); | ||
76 | SDL_joyname[numjoysticks] = | ||
77 | strdup(stick_name.String()); | ||
78 | numjoysticks++; | ||
79 | joystick.Close(); | ||
80 | } | ||
81 | } | ||
82 | } | ||
83 | return(numjoysticks); | ||
84 | } | ||
85 | |||
86 | /* Function to get the device-dependent name of a joystick */ | ||
87 | const char *SDL_SYS_JoystickName(int index) | ||
88 | { | ||
89 | return SDL_joyname[index]; | ||
90 | } | ||
91 | |||
92 | /* Function to open a joystick for use. | ||
93 | The joystick to open is specified by the index field of the joystick. | ||
94 | This should fill the nbuttons and naxes fields of the joystick structure. | ||
95 | It returns 0, or -1 if there is an error. | ||
96 | */ | ||
97 | int SDL_SYS_JoystickOpen(SDL_Joystick *joystick) | ||
98 | { | ||
99 | BJoystick *stick; | ||
100 | |||
101 | /* Create the joystick data structure */ | ||
102 | joystick->hwdata = (struct joystick_hwdata *) | ||
103 | SDL_malloc(sizeof(*joystick->hwdata)); | ||
104 | if ( joystick->hwdata == NULL ) { | ||
105 | SDL_OutOfMemory(); | ||
106 | return(-1); | ||
107 | } | ||
108 | SDL_memset(joystick->hwdata, 0, sizeof(*joystick->hwdata)); | ||
109 | stick = new BJoystick; | ||
110 | joystick->hwdata->stick = stick; | ||
111 | |||
112 | /* Open the requested joystick for use */ | ||
113 | if ( stick->Open(SDL_joyport[joystick->index]) == B_ERROR ) { | ||
114 | SDL_SetError("Unable to open joystick"); | ||
115 | SDL_SYS_JoystickClose(joystick); | ||
116 | return(-1); | ||
117 | } | ||
118 | |||
119 | /* Set the joystick to calibrated mode */ | ||
120 | stick->EnableCalibration(); | ||
121 | |||
122 | /* Get the number of buttons, hats, and axes on the joystick */ | ||
123 | joystick->nbuttons = stick->CountButtons(); | ||
124 | joystick->naxes = stick->CountAxes(); | ||
125 | joystick->nhats = stick->CountHats(); | ||
126 | |||
127 | joystick->hwdata->new_axes = (int16 *) | ||
128 | SDL_malloc(joystick->naxes*sizeof(int16)); | ||
129 | joystick->hwdata->new_hats = (uint8 *) | ||
130 | SDL_malloc(joystick->nhats*sizeof(uint8)); | ||
131 | if ( ! joystick->hwdata->new_hats || ! joystick->hwdata->new_axes ) { | ||
132 | SDL_OutOfMemory(); | ||
133 | SDL_SYS_JoystickClose(joystick); | ||
134 | return(-1); | ||
135 | } | ||
136 | |||
137 | /* We're done! */ | ||
138 | return(0); | ||
139 | } | ||
140 | |||
141 | /* Function to update the state of a joystick - called as a device poll. | ||
142 | * This function shouldn't update the joystick structure directly, | ||
143 | * but instead should call SDL_PrivateJoystick*() to deliver events | ||
144 | * and update joystick device state. | ||
145 | */ | ||
146 | void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick) | ||
147 | { | ||
148 | static const Uint8 hat_map[9] = { | ||
149 | SDL_HAT_CENTERED, | ||
150 | SDL_HAT_UP, | ||
151 | SDL_HAT_RIGHTUP, | ||
152 | SDL_HAT_RIGHT, | ||
153 | SDL_HAT_RIGHTDOWN, | ||
154 | SDL_HAT_DOWN, | ||
155 | SDL_HAT_LEFTDOWN, | ||
156 | SDL_HAT_LEFT, | ||
157 | SDL_HAT_LEFTUP | ||
158 | }; | ||
159 | const int JITTER = (32768/10); /* 10% jitter threshold (ok?) */ | ||
160 | |||
161 | BJoystick *stick; | ||
162 | int i, change; | ||
163 | int16 *axes; | ||
164 | uint8 *hats; | ||
165 | uint32 buttons; | ||
166 | |||
167 | /* Set up data pointers */ | ||
168 | stick = joystick->hwdata->stick; | ||
169 | axes = joystick->hwdata->new_axes; | ||
170 | hats = joystick->hwdata->new_hats; | ||
171 | |||
172 | /* Get the new joystick state */ | ||
173 | stick->Update(); | ||
174 | stick->GetAxisValues(axes); | ||
175 | stick->GetHatValues(hats); | ||
176 | buttons = stick->ButtonValues(); | ||
177 | |||
178 | /* Generate axis motion events */ | ||
179 | for ( i=0; i<joystick->naxes; ++i ) { | ||
180 | change = ((int32)axes[i] - joystick->axes[i]); | ||
181 | if ( (change > JITTER) || (change < -JITTER) ) { | ||
182 | SDL_PrivateJoystickAxis(joystick, i, axes[i]); | ||
183 | } | ||
184 | } | ||
185 | |||
186 | /* Generate hat change events */ | ||
187 | for ( i=0; i<joystick->nhats; ++i ) { | ||
188 | if ( hats[i] != joystick->hats[i] ) { | ||
189 | SDL_PrivateJoystickHat(joystick, i, hat_map[hats[i]]); | ||
190 | } | ||
191 | } | ||
192 | |||
193 | /* Generate button events */ | ||
194 | for ( i=0; i<joystick->nbuttons; ++i ) { | ||
195 | if ( (buttons&0x01) != joystick->buttons[i] ) { | ||
196 | SDL_PrivateJoystickButton(joystick, i, (buttons&0x01)); | ||
197 | } | ||
198 | buttons >>= 1; | ||
199 | } | ||
200 | } | ||
201 | |||
202 | /* Function to close a joystick after use */ | ||
203 | void SDL_SYS_JoystickClose(SDL_Joystick *joystick) | ||
204 | { | ||
205 | if ( joystick->hwdata ) { | ||
206 | joystick->hwdata->stick->Close(); | ||
207 | delete joystick->hwdata->stick; | ||
208 | if ( joystick->hwdata->new_hats ) { | ||
209 | SDL_free(joystick->hwdata->new_hats); | ||
210 | } | ||
211 | if ( joystick->hwdata->new_axes ) { | ||
212 | SDL_free(joystick->hwdata->new_axes); | ||
213 | } | ||
214 | SDL_free(joystick->hwdata); | ||
215 | joystick->hwdata = NULL; | ||
216 | } | ||
217 | } | ||
218 | |||
219 | /* Function to perform any system-specific joystick related cleanup */ | ||
220 | void SDL_SYS_JoystickQuit(void) | ||
221 | { | ||
222 | int i; | ||
223 | |||
224 | for ( i=0; SDL_joyport[i]; ++i ) { | ||
225 | SDL_free(SDL_joyport[i]); | ||
226 | } | ||
227 | SDL_joyport[0] = NULL; | ||
228 | |||
229 | for ( i=0; SDL_joyname[i]; ++i ) { | ||
230 | SDL_free(SDL_joyname[i]); | ||
231 | } | ||
232 | SDL_joyname[0] = NULL; | ||
233 | } | ||
234 | |||
235 | }; // extern "C" | ||
236 | |||
237 | #endif /* SDL_JOYSTICK_BEOS */ | ||