games.C File Reference

Detailed Description

This macro runs three "games" that each nicely illustrate the graphics capabilities of ROOT.

Thanks to the clever usage of TTimer objects it looks like they are all executing in parallel (emulation of multi-threading). It uses the small classes generated in $ROOTSYS/test/Hello, Aclock, Tetris

#ifndef __RUN_GAMES__

void games()
{
   gSystem->Load("libGui");
   Bool_t UNIX = strcmp(gSystem->GetName(), "Unix") == 0;
   Int_t st1 = gSystem->Load("$(ROOTSYS)/test/Aclock");
   if (st1 == -1) {
      printf("===>The macro games will try to build the Aclock library\n");
      if (UNIX)
         gSystem->Exec("(cd $ROOTSYS/test; make Aclock)");
      else
         gSystem->Exec("(cd %ROOTSYS%\\test && nmake -f Makefile.win32 Aclock.dll)");

      st1 = gSystem->Load("$(ROOTSYS)/test/Aclock");
   }
   Int_t st2 = gSystem->Load("$(ROOTSYS)/test/Hello");
   if (st2 == -1) {
      printf("===>The macro games will try to build the Hello library\n");
      if (UNIX)
         gSystem->Exec("(cd $ROOTSYS/test; make Hello)");
      else
         gSystem->Exec("(cd %ROOTSYS%\\test && nmake -f Makefile.win32 Hello.dll)");

      st2 = gSystem->Load("$(ROOTSYS)/test/Hello");
   }
   Int_t st3 = gSystem->Load("$(ROOTSYS)/test/Tetris");
   if (st3 == -1) {
      if (UNIX) {
         printf("===>The macro games will try to build the Tetris library\n");
         gSystem->Exec("(cd $ROOTSYS/test; make Tetris)");
      } else {
         gSystem->Exec("(cd %ROOTSYS%\\test && nmake -f Makefile.win32 Tetris.dll)");
      }
      st3 = gSystem->Load("$(ROOTSYS)/test/Tetris");
   }
   if (st1 || st2 || st3) {
      printf("ERROR: one of the shared libs in $ROOTSYS/test didn't load properly\n");
      return;
   }
   gROOT->ProcessLine("#define __RUN_GAMES__ 1");
   gROOT->ProcessLine("#include \"games.C\"");
   gROOT->ProcessLine("rungames()");
   gROOT->ProcessLine("#undef __RUN_GAMES__");
}

#else

class Hello;
class Aclock;
class Tetris;

void rungames()
{
   // run the dancing Hello World
   Hello *hello = new Hello();

   // run the analog clock
   Aclock *clock = new Aclock();

   // run the Tetris game
   Tetris *tetris = new Tetris();
}

#endif

Author

Valeriy Onuchin

Definition in file games.C.