Added parameters to Clock class

It is now possible to build a Clock object in a paused state, or to give
it an "already elapsed time" value


Former-commit-id: 20e9c55de8a12a9220f81dc7759a4113a794648f

src/Nazara/Core/Clock.cpp

@@ -39,10 +39,10 @@ namespace
 	}
 }
 
-NzClock::NzClock() :
-m_elapsedTime(0),
+NzClock::NzClock(nzUInt64 startingValue, bool paused) :
+m_elapsedTime(startingValue),
 m_refTime(NzGetMicroseconds()),
-m_paused(false)
+m_paused(paused)
 {
 }