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77 lines
2.0 KiB
77 lines
2.0 KiB
// |
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// gcc sdl-fftest.c `sdl2-config --libs --cflags` -o sdl-fftest |
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// |
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// |
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#include "SDL.h" |
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int test_haptic( SDL_Joystick * joystick ) { |
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SDL_Haptic *haptic; |
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SDL_HapticEffect effect; |
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int effect_id; |
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// Open the device |
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haptic = SDL_HapticOpenFromJoystick( joystick ); |
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if (haptic == NULL) return -1; // Most likely joystick isn't haptic |
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// See if it can do sine waves |
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if ((SDL_HapticQuery(haptic) & SDL_HAPTIC_SINE)==0) { |
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SDL_HapticClose(haptic); // No sine effect |
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return -1; |
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} |
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// Create the effect |
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memset( &effect, 0, sizeof(SDL_HapticEffect) ); // 0 is safe default |
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effect.type = SDL_HAPTIC_SINE; |
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effect.periodic.direction.type = SDL_HAPTIC_POLAR; // Polar coordinates |
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effect.periodic.direction.dir[0] = 18000; // Force comes from south |
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effect.periodic.period = 1000; // 1000 ms |
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effect.periodic.magnitude = 20000; // 20000/32767 strength |
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effect.periodic.length = 5000; // 5 seconds long |
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effect.periodic.attack_length = 1000; // Takes 1 second to get max strength |
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effect.periodic.fade_length = 1000; // Takes 1 second to fade away |
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// Upload the effect |
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effect_id = SDL_HapticNewEffect( haptic, &effect ); |
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// Test the effect |
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SDL_HapticRunEffect( haptic, effect_id, 1 ); |
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SDL_Delay( 5000); // Wait for the effect to finish |
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// We destroy the effect, although closing the device also does this |
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SDL_HapticDestroyEffect( haptic, effect_id ); |
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// Close the device |
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SDL_HapticClose(haptic); |
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return 0; // Success |
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} |
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int main(void) |
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{ |
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SDL_Joystick *joy; |
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if (SDL_Init(SDL_INIT_JOYSTICK|SDL_INIT_HAPTIC) != 0) { |
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fprintf(stderr, "error: %s\n", SDL_GetError()); |
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return 1; |
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} |
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if (SDL_NumJoysticks() < 0) { |
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fprintf(stderr, "No joystick\n"); |
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return 1; |
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} |
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joy = SDL_JoystickOpen(0); |
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if (joy) { |
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printf("Opened Joystick 0\n"); |
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printf("Name: %s\n", SDL_JoystickNameForIndex(0)); |
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printf("Number of Axes: %d\n", SDL_JoystickNumAxes(joy)); |
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printf("Number of Buttons: %d\n", SDL_JoystickNumButtons(joy)); |
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printf("Number of Balls: %d\n", SDL_JoystickNumBalls(joy)); |
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} else { |
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printf("Couldn't open Joystick 0\n"); |
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} |
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test_haptic(joy); |
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SDL_Quit(); |
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}
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