Mercurial > sdl-ios-xcode
annotate test/testjoystick.c @ 1861:b42823412c3b
Fixed bug #232
------- Comment #2 From Matthias Geissert 2006-05-24 07:54 [reply] -------
See http://dri.sourceforge.net/doc/DRIuserguide.html, section 11.5. There is
written that you need to use RTLD_GLOBAL, since, otherwise, nested open of
dynamic libraries doesn't work. However, This is necassary in this case, since
libGL opens the hardware-specific driver/library. I hope this helps you.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 20 Jun 2006 03:52:41 +0000 |
| parents | 5ff2c01e475e |
| children | c121d94672cb 3d9040dcc47e |
| rev | line source |
|---|---|
| 0 | 1 |
| 2 /* Simple program to test the SDL joystick routines */ | |
| 3 | |
| 4 #include <stdio.h> | |
| 5 #include <stdlib.h> | |
| 6 #include <string.h> | |
| 7 | |
| 8 #include "SDL.h" | |
| 9 | |
| 10 #define SCREEN_WIDTH 640 | |
| 11 #define SCREEN_HEIGHT 480 | |
| 12 | |
| 13 void WatchJoystick(SDL_Joystick *joystick) | |
| 14 { | |
| 15 SDL_Surface *screen; | |
| 16 const char *name; | |
| 17 int i, done; | |
| 18 SDL_Event event; | |
| 19 int x, y, draw; | |
|
1855
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
20 SDL_Rect axis_area[2]; |
| 0 | 21 |
| 22 /* Set a video mode to display joystick axis position */ | |
| 23 screen = SDL_SetVideoMode(SCREEN_WIDTH, SCREEN_HEIGHT, 16, 0); | |
| 24 if ( screen == NULL ) { | |
| 25 fprintf(stderr, "Couldn't set video mode: %s\n",SDL_GetError()); | |
| 26 return; | |
| 27 } | |
| 28 | |
| 29 /* Print info about the joystick we are watching */ | |
| 30 name = SDL_JoystickName(SDL_JoystickIndex(joystick)); | |
| 31 printf("Watching joystick %d: (%s)\n", SDL_JoystickIndex(joystick), | |
| 32 name ? name : "Unknown Joystick"); | |
| 33 printf("Joystick has %d axes, %d hats, %d balls, and %d buttons\n", | |
| 34 SDL_JoystickNumAxes(joystick), SDL_JoystickNumHats(joystick), | |
| 35 SDL_JoystickNumBalls(joystick),SDL_JoystickNumButtons(joystick)); | |
| 36 | |
| 37 /* Initialize drawing rectangles */ | |
| 38 memset(axis_area, 0, (sizeof axis_area)); | |
| 39 draw = 0; | |
| 40 | |
| 41 /* Loop, getting joystick events! */ | |
| 42 done = 0; | |
| 43 while ( ! done ) { | |
| 44 while ( SDL_PollEvent(&event) ) { | |
| 45 switch (event.type) { | |
| 46 case SDL_JOYAXISMOTION: | |
| 47 printf("Joystick %d axis %d value: %d\n", | |
| 48 event.jaxis.which, | |
| 49 event.jaxis.axis, | |
| 50 event.jaxis.value); | |
| 51 break; | |
| 52 case SDL_JOYHATMOTION: | |
| 53 printf("Joystick %d hat %d value:", | |
| 54 event.jhat.which, | |
| 55 event.jhat.hat); | |
| 56 if ( event.jhat.value == SDL_HAT_CENTERED ) | |
| 57 printf(" centered"); | |
| 58 if ( event.jhat.value & SDL_HAT_UP ) | |
| 59 printf(" up"); | |
| 60 if ( event.jhat.value & SDL_HAT_RIGHT ) | |
| 61 printf(" right"); | |
| 62 if ( event.jhat.value & SDL_HAT_DOWN ) | |
| 63 printf(" down"); | |
| 64 if ( event.jhat.value & SDL_HAT_LEFT ) | |
| 65 printf(" left"); | |
| 66 printf("\n"); | |
| 67 break; | |
| 68 case SDL_JOYBALLMOTION: | |
| 69 printf("Joystick %d ball %d delta: (%d,%d)\n", | |
| 70 event.jball.which, | |
| 71 event.jball.ball, | |
| 72 event.jball.xrel, | |
| 73 event.jball.yrel); | |
| 74 break; | |
| 75 case SDL_JOYBUTTONDOWN: | |
| 76 printf("Joystick %d button %d down\n", | |
| 77 event.jbutton.which, | |
| 78 event.jbutton.button); | |
| 79 break; | |
| 80 case SDL_JOYBUTTONUP: | |
| 81 printf("Joystick %d button %d up\n", | |
| 82 event.jbutton.which, | |
| 83 event.jbutton.button); | |
| 84 break; | |
| 85 case SDL_KEYDOWN: | |
| 86 if ( event.key.keysym.sym != SDLK_ESCAPE ) { | |
| 87 break; | |
| 88 } | |
| 89 /* Fall through to signal quit */ | |
| 90 case SDL_QUIT: | |
| 91 done = 1; | |
| 92 break; | |
| 93 default: | |
| 94 break; | |
| 95 } | |
| 96 } | |
| 97 /* Update visual joystick state */ | |
| 98 for ( i=0; i<SDL_JoystickNumButtons(joystick); ++i ) { | |
| 99 SDL_Rect area; | |
| 100 | |
| 101 area.x = i*34; | |
| 102 area.y = SCREEN_HEIGHT-34; | |
| 103 area.w = 32; | |
| 104 area.h = 32; | |
| 105 if (SDL_JoystickGetButton(joystick, i) == SDL_PRESSED) { | |
| 106 SDL_FillRect(screen, &area, 0xFFFF); | |
| 107 } else { | |
| 108 SDL_FillRect(screen, &area, 0x0000); | |
| 109 } | |
| 110 SDL_UpdateRects(screen, 1, &area); | |
| 111 } | |
| 112 | |
|
1855
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
113 /* Erase previous axes */ |
|
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
114 SDL_FillRect(screen, &axis_area[draw], 0x0000); |
| 0 | 115 |
|
1855
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
116 /* Draw the X/Y axis */ |
|
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
117 draw = !draw; |
|
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
118 x = (((int)SDL_JoystickGetAxis(joystick, 0))+32768); |
|
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
119 x *= SCREEN_WIDTH; |
|
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
120 x /= 65535; |
|
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
121 if ( x < 0 ) { |
|
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
122 x = 0; |
|
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
123 } else |
|
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
124 if ( x > (SCREEN_WIDTH-16) ) { |
|
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
125 x = SCREEN_WIDTH-16; |
|
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
126 } |
|
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
127 y = (((int)SDL_JoystickGetAxis(joystick, 1))+32768); |
|
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
128 y *= SCREEN_HEIGHT; |
|
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
129 y /= 65535; |
|
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
130 if ( y < 0 ) { |
|
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
131 y = 0; |
|
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
132 } else |
|
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
133 if ( y > (SCREEN_HEIGHT-16) ) { |
|
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
134 y = SCREEN_HEIGHT-16; |
|
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
135 } |
|
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
136 axis_area[draw].x = (Sint16)x; |
|
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
137 axis_area[draw].y = (Sint16)y; |
|
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
138 axis_area[draw].w = 16; |
|
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
139 axis_area[draw].h = 16; |
|
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
140 SDL_FillRect(screen, &axis_area[draw], 0xFFFF); |
| 1854 | 141 |
|
1855
5ff2c01e475e
Moved DirectInput joystick code to 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents:
1854
diff
changeset
|
142 SDL_UpdateRects(screen, 2, axis_area); |
| 0 | 143 } |
| 144 } | |
| 145 | |
| 146 int main(int argc, char *argv[]) | |
| 147 { | |
| 148 const char *name; | |
| 149 int i; | |
| 150 SDL_Joystick *joystick; | |
| 151 | |
| 152 /* Initialize SDL (Note: video is required to start event loop) */ | |
| 153 if ( SDL_Init(SDL_INIT_VIDEO|SDL_INIT_JOYSTICK) < 0 ) { | |
| 154 fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError()); | |
| 155 exit(1); | |
| 156 } | |
| 157 | |
| 158 /* Print information about the joysticks */ | |
| 159 printf("There are %d joysticks attached\n", SDL_NumJoysticks()); | |
| 160 for ( i=0; i<SDL_NumJoysticks(); ++i ) { | |
| 161 name = SDL_JoystickName(i); | |
| 162 printf("Joystick %d: %s\n",i,name ? name : "Unknown Joystick"); | |
| 163 } | |
| 164 | |
| 165 if ( argv[1] ) { | |
| 166 joystick = SDL_JoystickOpen(atoi(argv[1])); | |
| 167 if ( joystick == NULL ) { | |
| 168 printf("Couldn't open joystick %d: %s\n", atoi(argv[1]), | |
| 169 SDL_GetError()); | |
| 170 } else { | |
| 171 WatchJoystick(joystick); | |
| 172 SDL_JoystickClose(joystick); | |
| 173 } | |
| 174 } | |
| 175 SDL_QuitSubSystem(SDL_INIT_VIDEO|SDL_INIT_JOYSTICK); | |
| 176 | |
| 177 return(0); | |
| 178 } |