int vrlib_button_state (int ibutton)
{
if (ibutton == -1) ibutton = 0; /* check for quit */
return vrGet2switchValue (ibutton);
}
void update_world()
{
static vrTime lastTime = -1;
vrTime deltaTime;
float joy_x, joy_y;
vrVector vec;
int input;
if (lastTime < 0)
lastTime = vrCurrentSimTime();
/* do some traveling. */
deltaTime = vrCurrentSimTime() - lastTime;
lastTime += deltaTime;
joy_x = vrGetValuatorValue(0);
joy_y = vrGetValuatorValue(1);
vrUserTravelLockSet(VR_ALLUSERS);
if (fabs(joy_x) > 0.125) {
vrUserTravelRotateId(VR_ALLUSERS, VR_Y, deltaTime * joy_x * -25.0);
}
if (fabs(joy_y) > 0.125) {
vrVectorGetRWFrom6sensorDir(&vec, 1, VRDIR_FORE);
vrVectorScale(&vec, deltaTime * joy_y * 2.5);
vrUserTravelTranslateAd(VR_ALLUSERS, vec.v);
}
/* NOTE: this if relies on lazy evaluation -- the second condition */
/* shouldn't be checked if the first isn't true. */
if (vrContext->input->num_2ways > 1 && vrGet2switchValue(1)) {
vrUserTravelReset(VR_ALLUSERS);
}
/* NOTE: this if statement relies on lazy evaluation */
if (vrContext->input->num_2ways > 2 && vrGet2switchValue(2)) {
vrUserTravelTranslate3d(VR_ALLUSERS, 0.1, 0.0, 0.0);
}
/* NOTE: this if statement relies on lazy evaluation */
if (vrContext->input->num_2ways > 3 && vrGet2switchValue(3)) {
vrUserTravelTranslate3d(VR_ALLUSERS, -0.1, 0.0, 0.0);
}
vrUserTravelLockRelease(VR_ALLUSERS);
/* set DebugLevel to 200 to print this info to screen every frame */
if (vrDbgDo(RARE_DBGLVL)) {
vrMsgPrintf("TRAVEL: controller --");
vrMsgPrintf(" buttons:");
for (input = 0; input < vrContext->input->num_2ways; input++)
vrMsgPrintf(" %d", vrContext->input->switch2[input]->value);
vrMsgPrintf(" valuators:");
for (input = 0; input < vrContext->input->num_valuators; input++)
vrMsgPrintf(" %6.3f", vrContext->input->valuator[input]->value);
vrMsgPrintf("\n");
}
#if 1
/* Demonstration of how to segment different portions of the simulation in the statistics display */
vrSystemSimCategory(1); /* up until this point, count time spent in simulation as category-1 */
vrSleep(10000);
vrSystemSimCategory(2); /* between last Stats call and this one, count time spent as category-2 */
vrSleep(5000);
/* NOTE: time spent from last stats call (or beginning) is counted as category-1 */
#else
/* allow other processes to get some work done */
vrSleep(1);
#endif
}