--- a/test/testjoystick.c Thu Jul 06 18:01:37 2006 +0000
+++ b/test/testjoystick.c Mon Jul 10 21:04:37 2006 +0000
@@ -10,169 +10,167 @@
#define SCREEN_WIDTH 640
#define SCREEN_HEIGHT 480
-void WatchJoystick(SDL_Joystick *joystick)
+void
+WatchJoystick(SDL_Joystick * joystick)
{
- SDL_Surface *screen;
- const char *name;
- int i, done;
- SDL_Event event;
- int x, y, draw;
- SDL_Rect axis_area[2];
+ SDL_Surface *screen;
+ const char *name;
+ int i, done;
+ SDL_Event event;
+ int x, y, draw;
+ SDL_Rect axis_area[6][2];
- /* Set a video mode to display joystick axis position */
- screen = SDL_SetVideoMode(SCREEN_WIDTH, SCREEN_HEIGHT, 16, 0);
- if ( screen == NULL ) {
- fprintf(stderr, "Couldn't set video mode: %s\n",SDL_GetError());
- return;
- }
+ /* Set a video mode to display joystick axis position */
+ screen = SDL_SetVideoMode(SCREEN_WIDTH, SCREEN_HEIGHT, 16, 0);
+ if (screen == NULL) {
+ fprintf(stderr, "Couldn't set video mode: %s\n", SDL_GetError());
+ return;
+ }
- /* Print info about the joystick we are watching */
- name = SDL_JoystickName(SDL_JoystickIndex(joystick));
- printf("Watching joystick %d: (%s)\n", SDL_JoystickIndex(joystick),
- name ? name : "Unknown Joystick");
- printf("Joystick has %d axes, %d hats, %d balls, and %d buttons\n",
- SDL_JoystickNumAxes(joystick), SDL_JoystickNumHats(joystick),
- SDL_JoystickNumBalls(joystick),SDL_JoystickNumButtons(joystick));
+ /* Print info about the joystick we are watching */
+ name = SDL_JoystickName(SDL_JoystickIndex(joystick));
+ printf("Watching joystick %d: (%s)\n", SDL_JoystickIndex(joystick),
+ name ? name : "Unknown Joystick");
+ printf("Joystick has %d axes, %d hats, %d balls, and %d buttons\n",
+ SDL_JoystickNumAxes(joystick), SDL_JoystickNumHats(joystick),
+ SDL_JoystickNumBalls(joystick), SDL_JoystickNumButtons(joystick));
- /* Initialize drawing rectangles */
- memset(axis_area, 0, (sizeof axis_area));
- draw = 0;
+ /* Initialize drawing rectangles */
+ memset(axis_area, 0, (sizeof axis_area));
+ draw = 0;
- /* Loop, getting joystick events! */
- done = 0;
- while ( ! done ) {
- while ( SDL_PollEvent(&event) ) {
- switch (event.type) {
- case SDL_JOYAXISMOTION:
- printf("Joystick %d axis %d value: %d\n",
- event.jaxis.which,
- event.jaxis.axis,
- event.jaxis.value);
- break;
- case SDL_JOYHATMOTION:
- printf("Joystick %d hat %d value:",
- event.jhat.which,
- event.jhat.hat);
- if ( event.jhat.value == SDL_HAT_CENTERED )
- printf(" centered");
- if ( event.jhat.value & SDL_HAT_UP )
- printf(" up");
- if ( event.jhat.value & SDL_HAT_RIGHT )
- printf(" right");
- if ( event.jhat.value & SDL_HAT_DOWN )
- printf(" down");
- if ( event.jhat.value & SDL_HAT_LEFT )
- printf(" left");
- printf("\n");
- break;
- case SDL_JOYBALLMOTION:
- printf("Joystick %d ball %d delta: (%d,%d)\n",
- event.jball.which,
- event.jball.ball,
- event.jball.xrel,
- event.jball.yrel);
- break;
- case SDL_JOYBUTTONDOWN:
- printf("Joystick %d button %d down\n",
- event.jbutton.which,
- event.jbutton.button);
- break;
- case SDL_JOYBUTTONUP:
- printf("Joystick %d button %d up\n",
- event.jbutton.which,
- event.jbutton.button);
- break;
- case SDL_KEYDOWN:
- if ( event.key.keysym.sym != SDLK_ESCAPE ) {
- break;
- }
- /* Fall through to signal quit */
- case SDL_QUIT:
- done = 1;
- break;
- default:
- break;
- }
- }
- /* Update visual joystick state */
- for ( i=0; i<SDL_JoystickNumButtons(joystick); ++i ) {
- SDL_Rect area;
+ /* Loop, getting joystick events! */
+ done = 0;
+ while (!done) {
+ while (SDL_PollEvent(&event)) {
+ switch (event.type) {
+ case SDL_JOYAXISMOTION:
+ printf("Joystick %d axis %d value: %d\n",
+ event.jaxis.which,
+ event.jaxis.axis, event.jaxis.value);
+ break;
+ case SDL_JOYHATMOTION:
+ printf("Joystick %d hat %d value:",
+ event.jhat.which, event.jhat.hat);
+ if (event.jhat.value == SDL_HAT_CENTERED)
+ printf(" centered");
+ if (event.jhat.value & SDL_HAT_UP)
+ printf(" up");
+ if (event.jhat.value & SDL_HAT_RIGHT)
+ printf(" right");
+ if (event.jhat.value & SDL_HAT_DOWN)
+ printf(" down");
+ if (event.jhat.value & SDL_HAT_LEFT)
+ printf(" left");
+ printf("\n");
+ break;
+ case SDL_JOYBALLMOTION:
+ printf("Joystick %d ball %d delta: (%d,%d)\n",
+ event.jball.which,
+ event.jball.ball, event.jball.xrel, event.jball.yrel);
+ break;
+ case SDL_JOYBUTTONDOWN:
+ printf("Joystick %d button %d down\n",
+ event.jbutton.which, event.jbutton.button);
+ break;
+ case SDL_JOYBUTTONUP:
+ printf("Joystick %d button %d up\n",
+ event.jbutton.which, event.jbutton.button);
+ break;
+ case SDL_KEYDOWN:
+ if (event.key.keysym.sym != SDLK_ESCAPE) {
+ break;
+ }
+ /* Fall through to signal quit */
+ case SDL_QUIT:
+ done = 1;
+ break;
+ default:
+ break;
+ }
+ }
+ /* Update visual joystick state */
+ for (i = 0; i < SDL_JoystickNumButtons(joystick); ++i) {
+ SDL_Rect area;
- area.x = i*34;
- area.y = SCREEN_HEIGHT-34;
- area.w = 32;
- area.h = 32;
- if (SDL_JoystickGetButton(joystick, i) == SDL_PRESSED) {
- SDL_FillRect(screen, &area, 0xFFFF);
- } else {
- SDL_FillRect(screen, &area, 0x0000);
- }
- SDL_UpdateRects(screen, 1, &area);
- }
+ area.x = i * 34;
+ area.y = SCREEN_HEIGHT - 34;
+ area.w = 32;
+ area.h = 32;
+ if (SDL_JoystickGetButton(joystick, i) == SDL_PRESSED) {
+ SDL_FillRect(screen, &area, 0xFFFF);
+ } else {
+ SDL_FillRect(screen, &area, 0x0000);
+ }
+ SDL_UpdateRects(screen, 1, &area);
+ }
- /* Erase previous axes */
- SDL_FillRect(screen, &axis_area[draw], 0x0000);
+ for (i = 0;
+ i < SDL_JoystickNumAxes(joystick) / 2
+ && i < SDL_arraysize(axis_area); ++i) {
+ /* Erase previous axes */
+ SDL_FillRect(screen, &axis_area[i][draw], 0x0000);
- /* Draw the X/Y axis */
- draw = !draw;
- x = (((int)SDL_JoystickGetAxis(joystick, 0))+32768);
- x *= SCREEN_WIDTH;
- x /= 65535;
- if ( x < 0 ) {
- x = 0;
- } else
- if ( x > (SCREEN_WIDTH-16) ) {
- x = SCREEN_WIDTH-16;
- }
- y = (((int)SDL_JoystickGetAxis(joystick, 1))+32768);
- y *= SCREEN_HEIGHT;
- y /= 65535;
- if ( y < 0 ) {
- y = 0;
- } else
- if ( y > (SCREEN_HEIGHT-16) ) {
- y = SCREEN_HEIGHT-16;
- }
- axis_area[draw].x = (Sint16)x;
- axis_area[draw].y = (Sint16)y;
- axis_area[draw].w = 16;
- axis_area[draw].h = 16;
- SDL_FillRect(screen, &axis_area[draw], 0xFFFF);
+ /* Draw the X/Y axis */
+ draw = !draw;
+ x = (((int) SDL_JoystickGetAxis(joystick, i * 2 + 0)) + 32768);
+ x *= SCREEN_WIDTH;
+ x /= 65535;
+ if (x < 0) {
+ x = 0;
+ } else if (x > (SCREEN_WIDTH - 16)) {
+ x = SCREEN_WIDTH - 16;
+ }
+ y = (((int) SDL_JoystickGetAxis(joystick, i * 2 + 1)) + 32768);
+ y *= SCREEN_HEIGHT;
+ y /= 65535;
+ if (y < 0) {
+ y = 0;
+ } else if (y > (SCREEN_HEIGHT - 16)) {
+ y = SCREEN_HEIGHT - 16;
+ }
+ axis_area[i][draw].x = (Sint16) x;
+ axis_area[i][draw].y = (Sint16) y;
+ axis_area[i][draw].w = 16;
+ axis_area[i][draw].h = 16;
+ SDL_FillRect(screen, &axis_area[i][draw], 0xFFFF);
- SDL_UpdateRects(screen, 2, axis_area);
- }
+ SDL_UpdateRects(screen, 2, axis_area[i]);
+ }
+ }
}
-int main(int argc, char *argv[])
+int
+main(int argc, char *argv[])
{
- const char *name;
- int i;
- SDL_Joystick *joystick;
+ const char *name;
+ int i;
+ SDL_Joystick *joystick;
- /* Initialize SDL (Note: video is required to start event loop) */
- if ( SDL_Init(SDL_INIT_VIDEO|SDL_INIT_JOYSTICK) < 0 ) {
- fprintf(stderr, "Couldn't initialize SDL: %s\n",SDL_GetError());
- exit(1);
- }
+ /* Initialize SDL (Note: video is required to start event loop) */
+ if (SDL_Init(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK) < 0) {
+ fprintf(stderr, "Couldn't initialize SDL: %s\n", SDL_GetError());
+ exit(1);
+ }
- /* Print information about the joysticks */
- printf("There are %d joysticks attached\n", SDL_NumJoysticks());
- for ( i=0; i<SDL_NumJoysticks(); ++i ) {
- name = SDL_JoystickName(i);
- printf("Joystick %d: %s\n",i,name ? name : "Unknown Joystick");
- }
+ /* Print information about the joysticks */
+ printf("There are %d joysticks attached\n", SDL_NumJoysticks());
+ for (i = 0; i < SDL_NumJoysticks(); ++i) {
+ name = SDL_JoystickName(i);
+ printf("Joystick %d: %s\n", i, name ? name : "Unknown Joystick");
+ }
- if ( argv[1] ) {
- joystick = SDL_JoystickOpen(atoi(argv[1]));
- if ( joystick == NULL ) {
- printf("Couldn't open joystick %d: %s\n", atoi(argv[1]),
- SDL_GetError());
- } else {
- WatchJoystick(joystick);
- SDL_JoystickClose(joystick);
- }
- }
- SDL_QuitSubSystem(SDL_INIT_VIDEO|SDL_INIT_JOYSTICK);
+ if (argv[1]) {
+ joystick = SDL_JoystickOpen(atoi(argv[1]));
+ if (joystick == NULL) {
+ printf("Couldn't open joystick %d: %s\n", atoi(argv[1]),
+ SDL_GetError());
+ } else {
+ WatchJoystick(joystick);
+ SDL_JoystickClose(joystick);
+ }
+ }
+ SDL_QuitSubSystem(SDL_INIT_VIDEO | SDL_INIT_JOYSTICK);
- return(0);
+ return (0);
}