void GameSession::SimulateLateElement(MR_FreeElementHandle pElement,
MR_SimulationTime pDuration, int pRoom)
{
MR_SimulationTime lTimeToSimulate = pDuration;
if(lTimeToSimulate < 0) {
return;
}
if(mSimulationTime <= lTimeToSimulate) {
// can't backtrack below 0
return;
}
// clock back
MR_SimulationTime lOriginalTime = mSimulationTime;
mSimulationTime -= lTimeToSimulate;
while((pRoom >= 0) && (lTimeToSimulate >= MR_SIMULATION_SLICE)) {
pRoom = SimulateOneFreeElem(MR_SIMULATION_SLICE, pElement, pRoom);
lTimeToSimulate -= MR_SIMULATION_SLICE;
mSimulationTime += MR_SIMULATION_SLICE;
}
if((pRoom >= 0) && (lTimeToSimulate >= MR_MINIMUM_SIMULATION_SLICE)) {
pRoom = SimulateOneFreeElem(lTimeToSimulate, pElement, pRoom);
SimulateFreeElems(mSimulationTime < 0 ? 0 : lTimeToSimulate);
}
// return to good time
mSimulationTime = lOriginalTime;
}
void GameSession::Simulate()
{
Level *mCurrentLevel = track->GetLevel();
ASSERT(mCurrentLevel != nullptr);
Util::OS::timestamp_t lSimulateCallTime = Util::OS::Time();
MR_SimulationTime lTimeToSimulate;
// Determine the duration of the simulation step
lTimeToSimulate = static_cast<MR_SimulationTime>(
lSimulateCallTime - mLastSimulateCallTime);
if(lTimeToSimulate < 0)
lTimeToSimulate = 0;
/*
if( (lTimeToSimulate < 0 )||(lTimeToSimulate>500) )
{
// There is someting wrong with the calculated duration
// This is probably because the game have been paused
// (or the refresh rate is extrenemly slow, less than 2 frames sec)
// Use a relativly small time step
lTimeToSimulate = 20; // 2/100 of second
}
*/
while(lTimeToSimulate >= MR_SIMULATION_SLICE) {
SimulateFreeElems(mSimulationTime < 0 ? 0 : MR_SIMULATION_SLICE);
lTimeToSimulate -= MR_SIMULATION_SLICE;
mSimulationTime += MR_SIMULATION_SLICE;
}
if(lTimeToSimulate >= MR_MINIMUM_SIMULATION_SLICE) {
SimulateFreeElems(mSimulationTime < 0 ? 0 : lTimeToSimulate);
mSimulationTime += lTimeToSimulate;
lTimeToSimulate = 0;
}
SimulateSurfaceElems(static_cast<MR_SimulationTime>(
lSimulateCallTime - lTimeToSimulate - mLastSimulateCallTime));
mLastSimulateCallTime = lSimulateCallTime - lTimeToSimulate;
}