// get megs o' memory from FreeVR, and create the arena
// Warning: Don't make me do this twice.
void grab_FreeVR_memory(int megs) {
int size = (megs>1?megs:1) * 1024 * 1024;
if (vrShmemInit(size) == NULL)
msgErr << "Bad juju in the arena. We're gonna die!" << sendmsg;
else
msgInfo << "Created arena." << sendmsg;
}
// get megs o' memory from FreeVR, and create the arena
// Warning: Don't make me do this twice.
void grab_FreeVR_memory(size_t megs) {
size_t size = ((megs>1) ? megs : 1) * 1024L * 1024L;
size_t sz=0;
while (((sz = vrShmemInit(size)) == 0) && (size > 64*1024*1024)) {
msgErr << "Failed to create FreeVR arena of size "
<< (size / (1024*1024))
<< ", reducing allocation by half." << sendmsg;
size >>= 1; // cut allocation in half
}
if (sz == 0)
msgErr << "Failed to create FreeVR arena. We're gonna die!" << sendmsg;
else
msgInfo << "Created arena, size " << (sz / (1024*1024))
<< "MB." << sendmsg;
}
void vrlib_shmem_init (size_t size)
{
vrShmemInit (size);
vrConfigure (NULL, NULL, NULL);
return;
}
int main(int argc, char* argv[])
{
/* TODO: do I want to ignore interrupts for all of this? or */
/* just during vrStart()? */
//signal(SIGINT, SIG_IGN);
vrShmemInit(30 * 1024 * 1024);
vrConfigure(&argc, argv, NULL);
/* TODO: it would be nice to put these above vrStart(), since */
/* it will block until all input devices are open, and this */
/* way we could be rendering something while waiting. */
/* TODO: actually, we almost *need* to have the init_gfx stuff*/
/* set before vrStart, so the window opening function will */
/* have something to call (other than vrDoNothing()). */
/* In fact, I have no idea how init_gfx() gets called at */
/* all given the current setup. */
/* [5/30/00: I have now moved the function setting routines to*/
/* come before vrStart(). The library needs to be changed */
/* such that the incoming callbacks are stored in a holding */
/* bin, until the render/input/whatever loop is ready to */
/* update them. */
#if 1
/* TODO: unfortunately this shorthand doesn't work when there are extra */
/* arguments but these work okay. */
vrCallbackSet(VRFUNC_DISPLAY_INIT, "init_gfx", init_gfx, 0);
vrCallbackSet(VRFUNC_DISPLAY_FRAME, "gfx_frame", gfx_frame, 0);
vrCallbackSet(VRFUNC_DISPLAY, "draw_world", draw_world, 0);
vrCallbackSet(VRFUNC_DISPLAY_SIM, "my_sim", my_sim, 0);
vrCallbackSet(VRFUNC_HANDLE_USR2, "travel:vrDbgInfo", vrDbgInfo, 0);
#else
# if 1 /* 1/4/2003: test of possible startup race condition */
vrSetFunc(VRFUNC_DISPLAY_INIT, vrCreateNamedCallback("init_gfx", init_gfx, 0));
# endif
vrSetFunc(VRFUNC_DISPLAY, vrCreateNamedCallback("draw_world", draw_world, 0));
# ifdef PERSONAL_SIMULATOR
vrSetFunc(VRFUNC_DISPLAY_SIM, vrCreateNamedCallback("my_sim", my_sim, 0));
# endif
vrSetFunc(VRFUNC_HANDLE_USR2, vrCreateNamedCallback("travel:vrDbgInfo", vrDbgInfo, 0));
#endif
vrStart();
signal(SIGINT, exit_application);
if (vrContext->input->num_input_devices > 0) {
vrDbgPrintfN(SELDOM_DBGLVL+1, "TRAVEL: input device[0] version = '%s'\n",
vrContext->input->input_devices[0]->version);
} else {
vrDbgPrintfN(SELDOM_DBGLVL+1, "TRAVEL: No input devices defined.\n");
}
#if 0
if (vrDbgDo(AALWAYS_DBGLVL+1)) {
vrFprintContext(stdout, vrContext, verbose);
vrFprintConfig(stdout, vrContext->config, verbose);
vrFprintInput(stdout, vrContext->input, verbose);
}
#endif
if(vrContext->input->num_input_devices > 0)
vrDbgPrintf("TRAVEL: input device[0] version = '%s'\n",
vrContext->input->input_devices[0]->version);
#if 0 /* NOTE: this isn't really necessary, so don't use for non-test applications */
update_world();
vrInputWaitForAllInputDevicesToBeOpen();
#endif
vrSystemSetName("travel -- FreeVR test program");
vrSystemSetAuthors("Bill Sherman");
vrSystemSetExtraInfo("A really good program for testing the FreeVR library");
vrSystemSetStatusDescription("Application running fine");
vrInputSet2switchDescription(0, "Terminate the application");
vrInputSet2switchDescription(1, "Reset User Travel");
vrInputSet2switchDescription(2, "Move User 0.1 to the right");
vrInputSet2switchDescription(3, "Move User 0.1 to the left");
vrInputSetValuatorDescription(0, "Rotate User");
vrInputSetValuatorDescription(1, "Move User in direction of Wand");
#if 0 /* for testing */
vrInputSetNswitchDescription(0, "Do something with a switch");
vrInputSetNsensorDescription(0, "Do something with an N-sensor");
vrInputSet6sensorDescription(0, "Move the Head");
vrInputSet6sensorDescription(1, "Move the Wand");
#endif
vrDbgPrintf("TRAVEL: looping\n");
#if 1
while(vrFrame()) {
update_world();
}
#else /* run for two frames and then quit */
vrFrame();
update_world();
vrFrame();
update_world();
#endif
vrPrintf(BOLD_TEXT "TRAVEL: I guess we're all done now.\n" NORM_TEXT);
exit_application();
exit(0);
}