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/*
* Example program for the Allegro library, by Beoran.
*
* This program tests haptic effects.
*/
#define ALLEGRO_UNSTABLE
#include <allegro5/allegro.h>
#include <allegro5/allegro_primitives.h>
#include "common.c"
static void test_haptic_joystick(ALLEGRO_JOYSTICK *joy)
{
ALLEGRO_HAPTIC_EFFECT_ID id;
ALLEGRO_HAPTIC *haptic;
ALLEGRO_HAPTIC_EFFECT effect;
const double intensity = 1.0;
const double duration = 1.0;
haptic = al_get_haptic_from_joystick(joy);
if (!haptic) {
log_printf("Could not get haptic device from joystick!");
return;
}
log_printf("Can play back %d haptic effects.\n",
al_get_max_haptic_effects(haptic));
log_printf("Set gain to 0.8: %d.\n",
al_set_haptic_gain(haptic, 0.8));
log_printf("Get gain: %lf.\n",
al_get_haptic_gain(haptic));
log_printf("Capabilities: %d.\n",
al_get_haptic_capabilities(haptic));
memset(&effect, 0, sizeof(effect));
effect.type = ALLEGRO_HAPTIC_RUMBLE;
effect.data.rumble.strong_magnitude = intensity;
effect.data.rumble.weak_magnitude = intensity;
effect.replay.delay = 0.1;
effect.replay.length = duration;
log_printf("Upload effect: %d.\n",
al_upload_haptic_effect(haptic, &effect, &id));
log_printf("Playing effect: %d.\n",
al_play_haptic_effect(&id, 3));
do {
al_rest(0.1);
} while (al_is_haptic_effect_playing(&id));
log_printf("Set gain to 0.4: %d.\n",
al_set_haptic_gain(haptic, 0.4));
log_printf("Get gain: %lf.\n",
al_get_haptic_gain(haptic));
log_printf("Playing effect again: %d.\n",
al_play_haptic_effect(&id, 5));
al_rest(2.0);
log_printf("Stopping effect: %d.\n",
al_stop_haptic_effect(&id));
do {
al_rest(0.1);
} while (al_is_haptic_effect_playing(&id));
log_printf("Release effect: %d.\n",
al_release_haptic_effect(&id));
log_printf("Release haptic: %d.\n",
al_release_haptic(haptic));
}
int main(int argc, char **argv)
{
ALLEGRO_DISPLAY *display;
int num_joysticks;
int i;
(void)argc;
(void)argv;
if (!al_init()) {
abort_example("Could not init Allegro.\n");
}
display = al_create_display(640, 480);
if (!display) {
abort_example("al_create_display failed\n");
}
if (!al_install_joystick()) {
abort_example("al_install_joystick failed\n");
}
if (!al_install_haptic()) {
abort_example("al_install_haptic failed\n");
}
open_log();
num_joysticks = al_get_num_joysticks();
log_printf("Found %d joysticks.\n", num_joysticks);
for (i = 0; i < num_joysticks; i++) {
ALLEGRO_JOYSTICK *joy = al_get_joystick(i);
if (!joy) {
continue;
}
if (al_is_joystick_haptic(joy)) {
log_printf("Joystick %s supports force feedback.\n",
al_get_joystick_name(joy));
test_haptic_joystick(joy);
}
else {
log_printf("Joystick %s does not support force feedback.\n",
al_get_joystick_name(joy));
}
al_release_joystick(joy);
}
log_printf("\nAll done!\n");
close_log(true);
return 0;
}
/* vim: set ts=8 sts=3 sw=3 et: */
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