I’m trying to run ORTS on my Mac for a school project. It was ostensibly written to be cross-platform, but I don’t know if it was ever properly tested on OSX. After a great deal of difficulty, I managed to get it to compile, but it still doesn’t quite work.
When I run the ortsg application, which is the OpenGL graphical interface, the terminal output indicates that the game starts up, loads its assets and runs correctly. However, the actual game window never appears. The only possible indication of any problem is the following message:
2011-11-23 16:52:33.513 ortsg[4565:107] GLUT Warning: glutInit being called a second time.
Other than that message, all of the output is exactly the same as what I see when running on my school’s Slackware Linux machines, where the game runs fine. (Unfortunately it’s rather inconvenient for me to do my work on those machines, hence my attempts to run it on OSX.) I can get rid of that warning by commenting out a call to glutInit in apps/ortsg/src/ortsg_main.C, which doesn’t seem to introduce any other problems, but the game window is still never shown.
I can’t seem to find reports of anyone having similar problems on Google. I don’t expect anyone on SO will be intimately familiar with ORTS, so my questions are as follows:
- Are there any common scenarios which might cause a GLUT window to not appear, particularly on OSX?
- Does GLUT provide any facilities for debugging such problems?
Edit: As requested by JimN, here is some of the GLUT initialization code…
// From apps/ortsg/src/ortsg_main.C
int main(int argc, char **argv)
{
char mydir[81];
getcwd(mydir, 80);
glutInit(&argc, argv);
chdir(mydir);
// ...
}
// From libs/gfxclient/src/GfxInit.C
void glutVisibilityDebug(int state)
{
if(state == GLUT_VISIBLE)
cout << "Window is visible" << endl;
else if(state == GLUT_NOT_VISIBLE)
cout << "Window is invisible" << endl;
else
cout << "Window state unknown";
}
void GfxModule::init_GLUT_window()
{
cerr << "INITIALIZE GLUT WINDOW" << endl;
GfxGlutAdaptor::set_client(this);
glutInitDisplayMode(GLUT_RGBA | GLUT_DOUBLE | GLUT_DEPTH | GLUT_ALPHA);
// the window starts near the upper left corner of the screen
glutInitWindowPosition(opt.win_x, opt.win_y);
glutInitWindowSize(opt.win_w, opt.win_h);
// Open a window
glutCreateWindow(opt.title.c_str());
// Register the splash as the draw routing until
glutDisplayFunc (GfxGlutAdaptor::splash);
glutVisibilityFunc(glutVisibilityDebug);
if (opt.full_screen) glutFullScreen();
}
I added the glutVisibilityDebug function to see if I could determine what GLUT thinks the window’s visibility state is, but none of my debug statements are ever printed. Something else just occurred to me which might help debug this. I tried at one point to replace glutDisplayFunc with a function which just printed “glutDislplayFunc called” to stderr. I noticed that the text was only printed when I quit the application.
I downloaded the daily snapshot from 26/11/2011, and then installed all dependencies using brew on my Mac.
Executed
export OSTYPE=DARWINfollowed bymake initandmake. There were several compilation problems which I fixed on this makefile:Then some changes I had to do manually, to fix errors like:
Edit the file
trunk/libs/pathfinding/dcdt/sr/src/sr_bv_math.cppand right after the cmath include, declareisnanas extern:That compiled the binaries, but then I had to also download
orts_data.tgzto run the applications.Well, running ortsg for the very first time failed, reporting:
texture size = 64X64
Even though the files are there. So I KILLED the application and tried it again:
The first line of the error might be familiar to you. Even though the app was killed, something seems to be left hanging somewhere, and the only way I found to bypass the error and have a clean run of the application was rebooting my computer.
It seems this application has issues on Mac OS X and need immediate fixing. I suggest you install a Linux VM, or even a Windows VM inside your Mac to be able to run orts, if you really have to use it.