Mercurial > sdl-ios-xcode
annotate src/joystick/beos/SDL_bejoystick.cc @ 1330:450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
using Visual C++ 2005
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Mon, 06 Feb 2006 08:28:51 +0000 |
| parents | c9b51268668f |
| children | 3692456e7b0f |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
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 | |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
13 Lesser General Public License for more details. |
| 0 | 14 |
|
1312
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
15 You should have received a copy of the GNU Lesser General Public |
|
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
16 License along with this library; if not, write to the Free Software |
|
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
|
252
e8157fcb3114
Updated the source with the correct e-mail address
Sam Lantinga <slouken@libsdl.org>
parents:
0
diff
changeset
|
20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 /* This is the system specific header for the SDL joystick API */ | |
| 24 | |
| 25 #include <stdio.h> | |
| 26 #include <stdlib.h> | |
| 27 #include <string.h> | |
| 28 | |
| 29 #include <be/support/String.h> | |
| 30 #include <be/device/Joystick.h> | |
| 31 | |
| 32 extern "C" { | |
| 33 | |
| 34 #include "SDL_error.h" | |
| 35 #include "SDL_joystick.h" | |
| 36 #include "SDL_sysjoystick.h" | |
| 37 #include "SDL_joystick_c.h" | |
| 38 | |
| 39 | |
| 40 /* The maximum number of joysticks we'll detect */ | |
| 41 #define MAX_JOYSTICKS 16 | |
| 42 | |
| 43 /* A list of available joysticks */ | |
| 44 static char *SDL_joyport[MAX_JOYSTICKS]; | |
| 45 static char *SDL_joyname[MAX_JOYSTICKS]; | |
| 46 | |
| 47 /* The private structure used to keep track of a joystick */ | |
| 48 struct joystick_hwdata { | |
| 49 BJoystick *stick; | |
| 50 uint8 *new_hats; | |
| 51 int16 *new_axes; | |
| 52 }; | |
| 53 | |
| 54 /* Function to scan the system for joysticks. | |
| 55 * This function should set SDL_numjoysticks to the number of available | |
| 56 * joysticks. Joystick 0 should be the system default joystick. | |
| 57 * It should return 0, or -1 on an unrecoverable fatal error. | |
| 58 */ | |
| 59 int SDL_SYS_JoystickInit(void) | |
| 60 { | |
| 61 BJoystick joystick; | |
| 62 int numjoysticks; | |
| 63 int i; | |
| 64 int32 nports; | |
| 65 char name[B_OS_NAME_LENGTH]; | |
| 66 | |
| 67 /* Search for attached joysticks */ | |
| 68 nports = joystick.CountDevices(); | |
| 69 numjoysticks = 0; | |
| 70 memset(SDL_joyport, 0, (sizeof SDL_joyport)); | |
| 71 memset(SDL_joyname, 0, (sizeof SDL_joyname)); | |
| 72 for ( i=0; (SDL_numjoysticks < MAX_JOYSTICKS) && (i < nports); ++i ) { | |
| 73 if ( joystick.GetDeviceName(i, name) == B_OK ) { | |
| 74 if ( joystick.Open(name) != B_ERROR ) { | |
| 75 BString stick_name; | |
| 76 joystick.GetControllerName(&stick_name); | |
| 77 SDL_joyport[numjoysticks] = strdup(name); | |
| 78 SDL_joyname[numjoysticks] = | |
| 79 strdup(stick_name.String()); | |
| 80 numjoysticks++; | |
| 81 joystick.Close(); | |
| 82 } | |
| 83 } | |
| 84 } | |
| 85 return(numjoysticks); | |
| 86 } | |
| 87 | |
| 88 /* Function to get the device-dependent name of a joystick */ | |
| 89 const char *SDL_SYS_JoystickName(int index) | |
| 90 { | |
| 91 return SDL_joyname[index]; | |
| 92 } | |
| 93 | |
| 94 /* Function to open a joystick for use. | |
| 95 The joystick to open is specified by the index field of the joystick. | |
| 96 This should fill the nbuttons and naxes fields of the joystick structure. | |
| 97 It returns 0, or -1 if there is an error. | |
| 98 */ | |
| 99 int SDL_SYS_JoystickOpen(SDL_Joystick *joystick) | |
| 100 { | |
| 101 BJoystick *stick; | |
| 102 | |
| 103 /* Create the joystick data structure */ | |
| 104 joystick->hwdata = (struct joystick_hwdata *) | |
| 105 malloc(sizeof(*joystick->hwdata)); | |
| 106 if ( joystick->hwdata == NULL ) { | |
| 107 SDL_OutOfMemory(); | |
| 108 return(-1); | |
| 109 } | |
| 110 memset(joystick->hwdata, 0, sizeof(*joystick->hwdata)); | |
| 111 stick = new BJoystick; | |
| 112 joystick->hwdata->stick = stick; | |
| 113 | |
| 114 /* Open the requested joystick for use */ | |
| 115 if ( stick->Open(SDL_joyport[joystick->index]) == B_ERROR ) { | |
| 116 SDL_SetError("Unable to open joystick"); | |
| 117 SDL_SYS_JoystickClose(joystick); | |
| 118 return(-1); | |
| 119 } | |
| 120 | |
| 121 /* Set the joystick to calibrated mode */ | |
| 122 stick->EnableCalibration(); | |
| 123 | |
| 124 /* Get the number of buttons, hats, and axes on the joystick */ | |
| 125 joystick->nbuttons = stick->CountButtons(); | |
| 126 joystick->naxes = stick->CountAxes(); | |
| 127 joystick->nhats = stick->CountHats(); | |
| 128 | |
| 129 joystick->hwdata->new_axes = (int16 *) | |
| 130 malloc(joystick->naxes*sizeof(int16)); | |
| 131 joystick->hwdata->new_hats = (uint8 *) | |
| 132 malloc(joystick->nhats*sizeof(uint8)); | |
| 133 if ( ! joystick->hwdata->new_hats || ! joystick->hwdata->new_axes ) { | |
| 134 SDL_OutOfMemory(); | |
| 135 SDL_SYS_JoystickClose(joystick); | |
| 136 return(-1); | |
| 137 } | |
| 138 | |
| 139 /* We're done! */ | |
| 140 return(0); | |
| 141 } | |
| 142 | |
| 143 /* Function to update the state of a joystick - called as a device poll. | |
| 144 * This function shouldn't update the joystick structure directly, | |
| 145 * but instead should call SDL_PrivateJoystick*() to deliver events | |
| 146 * and update joystick device state. | |
| 147 */ | |
| 148 void SDL_SYS_JoystickUpdate(SDL_Joystick *joystick) | |
| 149 { | |
| 150 static const Uint8 hat_map[9] = { | |
| 151 SDL_HAT_CENTERED, | |
| 152 SDL_HAT_UP, | |
| 153 SDL_HAT_RIGHTUP, | |
| 154 SDL_HAT_RIGHT, | |
| 155 SDL_HAT_RIGHTDOWN, | |
| 156 SDL_HAT_DOWN, | |
| 157 SDL_HAT_LEFTDOWN, | |
| 158 SDL_HAT_LEFT, | |
| 159 SDL_HAT_LEFTUP | |
| 160 }; | |
| 161 const int JITTER = (32768/10); /* 10% jitter threshold (ok?) */ | |
| 162 | |
| 163 BJoystick *stick; | |
| 164 int i, change; | |
| 165 int16 *axes; | |
| 166 uint8 *hats; | |
| 167 uint32 buttons; | |
| 168 | |
| 169 /* Set up data pointers */ | |
| 170 stick = joystick->hwdata->stick; | |
| 171 axes = joystick->hwdata->new_axes; | |
| 172 hats = joystick->hwdata->new_hats; | |
| 173 | |
| 174 /* Get the new joystick state */ | |
| 175 stick->Update(); | |
| 176 stick->GetAxisValues(axes); | |
| 177 stick->GetHatValues(hats); | |
| 178 buttons = stick->ButtonValues(); | |
| 179 | |
| 180 /* Generate axis motion events */ | |
| 181 for ( i=0; i<joystick->naxes; ++i ) { | |
| 182 change = ((int32)axes[i] - joystick->axes[i]); | |
| 183 if ( (change > JITTER) || (change < -JITTER) ) { | |
| 184 SDL_PrivateJoystickAxis(joystick, i, axes[i]); | |
| 185 } | |
| 186 } | |
| 187 | |
| 188 /* Generate hat change events */ | |
| 189 for ( i=0; i<joystick->nhats; ++i ) { | |
| 190 if ( hats[i] != joystick->hats[i] ) { | |
| 191 SDL_PrivateJoystickHat(joystick, i, hat_map[hats[i]]); | |
| 192 } | |
| 193 } | |
| 194 | |
| 195 /* Generate button events */ | |
| 196 for ( i=0; i<joystick->nbuttons; ++i ) { | |
| 197 if ( (buttons&0x01) != joystick->buttons[i] ) { | |
| 198 SDL_PrivateJoystickButton(joystick, i, (buttons&0x01)); | |
| 199 } | |
| 200 buttons >>= 1; | |
| 201 } | |
| 202 } | |
| 203 | |
| 204 /* Function to close a joystick after use */ | |
| 205 void SDL_SYS_JoystickClose(SDL_Joystick *joystick) | |
| 206 { | |
| 207 if ( joystick->hwdata ) { | |
| 208 joystick->hwdata->stick->Close(); | |
| 209 delete joystick->hwdata->stick; | |
| 210 if ( joystick->hwdata->new_hats ) { | |
| 211 free(joystick->hwdata->new_hats); | |
| 212 } | |
| 213 if ( joystick->hwdata->new_axes ) { | |
| 214 free(joystick->hwdata->new_axes); | |
| 215 } | |
| 216 free(joystick->hwdata); | |
| 217 joystick->hwdata = NULL; | |
| 218 } | |
| 219 } | |
| 220 | |
| 221 /* Function to perform any system-specific joystick related cleanup */ | |
| 222 void SDL_SYS_JoystickQuit(void) | |
| 223 { | |
| 224 int i; | |
| 225 | |
| 226 for ( i=0; SDL_joyport[i]; ++i ) { | |
| 227 free(SDL_joyport[i]); | |
| 228 } | |
| 229 SDL_joyport[0] = NULL; | |
| 230 | |
| 231 for ( i=0; SDL_joyname[i]; ++i ) { | |
| 232 free(SDL_joyname[i]); | |
| 233 } | |
| 234 SDL_joyname[0] = NULL; | |
| 235 } | |
| 236 | |
| 237 }; // extern "C" |