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 $(ROOTSYS)/test/Aclock library failed to load\n");
   }
   Int_t st2 = gSystem->Load("$(ROOTSYS)/test/Hello");
   if (st2 == -1) {
      printf("===>The $(ROOTSYS)/test/Hello library failed to load\n");
   }
   Int_t st3 = gSystem->Load("$(ROOTSYS)/test/Tetris");
   if (st3 == -1) {
      printf("===>The $(ROOTSYS)/test/Tetris library failed to load\n");
   }
   if (st1 || st2 || st3) {
      printf("ERROR: at least one of the shared libs in $ROOTSYS/test didn't load properly\n");
      return;
   }
   gROOT->ProcessLine("#define __RUN_GAMES__ 1");
 
   gInterpreter->AddIncludePath("${ROOTSYS}/test");
 
   // Add this for CLING not to complain
   gROOT->ProcessLine("#include \"Hello.h\"");
   gROOT->ProcessLine("#include \"Aclock.h\"");
   gROOT->ProcessLine("#include \"Tetris.h\"");
 
   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.