void ActorSet::update(float deltaTime)
{
for(iterator i = begin(); i!=end(); ++i)
{
ActorPtr actor = i->second;
if(actor)
{
actor->update(deltaTime);
}
}
while(!spawnRequests.empty())
{
_spawn(spawnRequests.front());
spawnRequests.pop();
}
reapZombieActors();
}
/*---------------------------------------------------------------------*
Name system - issues an MS-DOS command
Usage int system(const char *command);
Prototype in stdlib.h
Description system invokes the MS-DOS command processor to
execute a command given in the string command, as if the command
had been typed at the DOS prompt.
The COMSPEC environment variable is used to find the
command processor file, so the file does not need to be in
the current directory.
Return value If command is a NULL pointer then system() returns nonzero if
a command processor is available. If command is not a NULL pointer,
system() returns zero if the command processor was successfully
started. If an error occurred, a -1 is returned and errno is set to
ENOENT, ENOMEM, E2BIG, or ENOEXEC.
ENOENT - command processor not found
ENOMEM - not enough memory
E2BIG - argument list too long
ENOEXEC - the command processor is not a valid executable
*---------------------------------------------------------------------*/
int _FARFUNC system(const char _FAR *cmd)
{
register char *cmdP;
int cmdS;
register char *envP;
void *envSave;
char *pathP;
int rc;
// Check whether user just wants to test if command processor is available.
//
if (cmd == NULL)
{
if ((pathP = getenv("COMSPEC")) == NULL)
{
errno = ENOENT;
return 0;
}
else
return 1;
}
// Get COMMAND.COM path
//
if ((pathP = getenv("COMSPEC")) == NULL)
{
errno = ENOENT;
return (-1);
}
// Build command line
//
cmdS = 1 + 3 + strlen(cmd) + 1;
if (cmdS > 128)
{
errno = E2BIG;
return (-1);
}
if ((cmdP = malloc(cmdS)) == NULL)
{
errno = ENOMEM;
return (-1);
}
if (cmdS == 5)
{
cmdP[0] = 0;
cmdP[1] = '\r';
}
else
{
*cmdP++ = cmdS - 2;
*cmdP++ = getswitchar();
cmdP = _stpcpy(cmdP, "c ");
cmdP = _stpcpy(cmdP, cmd);
*cmdP++ = '\r';
cmdP -= cmdS;
}
// Build environment
//
if ((envP = __DOSenv(environ, pathP, &envSave)) == NULL)
{
errno = ENOMEM;
free(cmdP);
return (-1);
}
// Flush all byte streams
//
(*_exitbuf)();
// Now, call the low level _spawn function
//
rc = _spawn(pathP, cmdP, envP);
// Release all buffers
//
free(envSave);
free(cmdP);
return ((rc == -1) ? -1 : 0);
}
