/** Find the position (rank) of every kart
*/
void LinearWorld::updateRacePosition()
{
// Mostly for debugging:
beginSetKartPositions();
const unsigned int kart_amount = m_karts.size();
#ifdef DEBUG
bool rank_changed = false;
#endif
// NOTE: if you do any changes to this loop, the next loop (see
// DEBUG_KART_RANK below) needs to have the same changes applied
// so that debug output is still correct!!!!!!!!!!!
for (unsigned int i=0; i<kart_amount; i++)
{
Kart* kart = m_karts[i];
// Karts that are either eliminated or have finished the
// race already have their (final) position assigned. If
// these karts would get their rank updated, it could happen
// that a kart that finished first will be overtaken after
// crossing the finishing line and become second!
if(kart->isEliminated() || kart->hasFinishedRace())
{
// This is only necessary to support debugging inconsistencies
// in kart position parameters.
setKartPosition(i, kart->getPosition());
continue;
}
KartInfo& kart_info = m_kart_info[i];
int p = 1 ;
const int my_id = kart->getWorldKartId();
const int my_laps = getLapForKart(my_id);
const float my_progression = getDistanceDownTrackForKart(my_id);
// Count karts ahead of the current kart, i.e. kart that are already finished,
// have done more laps, or the same number of laps, but a greater distance.
for (unsigned int j = 0 ; j < kart_amount ; j++)
{
if(j == kart->getWorldKartId()) continue; // don't compare a kart with itself
if(m_karts[j]->isEliminated()) continue; // dismiss eliminated karts
if(!kart->hasFinishedRace() && m_karts[j]->hasFinishedRace())
{
p++;
continue;
}
/* has done more or less lapses */
assert(j==m_karts[j]->getWorldKartId());
int other_laps = getLapForKart(j);
if (other_laps != my_laps)
{
if(other_laps > my_laps)
{
p++; // Other kart has more lapses
}
continue;
}
// Now both karts have the same number of lapses. Test progression.
// A kart is ahead if it's driven further, or driven the same
// distance, but started further to the back.
float other_progression = getDistanceDownTrackForKart(j);
if(other_progression > my_progression ||
(other_progression == my_progression &&
m_karts[j]->getInitialPosition() > kart->getInitialPosition()) )
{
p++;
#if _DEBUG_PRINTS_LIKE_MAD_
std::cout << " " << p << " : " << m_karts[j]->getIdent() <<
" because he has is further within the track (my progression is " <<
my_progression << ", his progression is " << other_progression << ")\n";
#endif
}
} //next kart
#ifndef DEBUG
setKartPosition(i, p);
#else
rank_changed |= kart->getPosition()!=p;
if (!setKartPosition(i,p))
{
std::cerr << "ERROR, same rank used twice!!\n";
std::cerr << "Info used to decide ranking :\n";
for (unsigned int d=0; d<kart_amount; d++)
{
std::cerr << " kart " << m_karts[d]->getIdent() << " has finished(" << m_karts[d]->hasFinishedRace()
<< "), is at lap (" << getLapForKart(d) << "), is at distance("
<< getDistanceDownTrackForKart(d) << "), is eliminated(" << m_karts[d]->isEliminated() << ")" << std::endl;
}
std::cerr << "Who has each ranking so far :\n";
for (unsigned int d=0; d<i; d++)
{
std::cerr << " " << m_karts[d]->getIdent() << " has rank " << m_karts[d]->getPosition() << std::endl;
}
std::cerr << " --> And " << kart->getIdent() << " is being set at rank " << p << std::endl;
history->Save();
assert(false);
}
#endif
// Switch on faster music if not already done so, if the
// first kart is doing its last lap, and if the estimated
// remaining time is less than 30 seconds.
if(!m_faster_music_active &&
kart_info.m_race_lap == race_manager->getNumLaps()-1 &&
p==1 &&
useFastMusicNearEnd() &&
kart_info.m_estimated_finish > 0 &&
kart_info.m_estimated_finish - getTime() < 30.0f )
{
music_manager->switchToFastMusic();
m_faster_music_active=true;
}
} // for i<kart_amount
// Define this to get a detailled analyses each time a race position
// changes.
#ifdef DEBUG
#undef DEBUG_KART_RANK
#ifdef DEBUG_KART_RANK
if(rank_changed)
{
std::cout << "Counting laps at "<<getTime()<<" seconds.\n";
for (unsigned int i=0; i<kart_amount; i++)
{
Kart* kart = m_karts[i];
if(kart->isEliminated() || kart->hasFinishedRace()) continue;
KartInfo& kart_info = m_kart_info[i];
int p = 1 ;
const int my_id = kart->getWorldKartId();
const int my_laps = getLapForKart(my_id);
const float my_progression = getDistanceDownTrackForKart(my_id);
std::cout << "counting karts ahead of " << kart->getIdent()
<< " (laps "<<m_kart_info[i].m_race_lap<<", progress "
<< my_progression<<").\n";
for (unsigned int j = 0 ; j < kart_amount ; j++)
{
if(j == kart->getWorldKartId()) continue; // don't compare a kart with itself
if(!kart->hasFinishedRace() && m_karts[j]->hasFinishedRace())
{
p++;
std::cout << " " << p << " : " << m_karts[j]->getIdent() << " because he has finished.\n";
continue;
}
int other_laps = getLapForKart(j);
if (other_laps != my_laps)
{
if(other_laps > my_laps)
{
p++; // Other kart has more lapses
std::cout << " " << p << " : " << m_karts[j]->getIdent() << " because he has more laps than me.\n";
}
continue;
}
float other_progression = getDistanceDownTrackForKart(j);
if(other_progression > my_progression ||
(other_progression == my_progression &&
m_karts[j]->getInitialPosition() > kart->getInitialPosition()) )
{
p++;
std::cout << " " << p << " : " << m_karts[j]->getIdent() <<
" because he is further within the track (my progression is " <<
my_progression << ", his progression is " << other_progression << ")\n";
}
} //next kart
} // for i<kart_amount
std::cout << "-------------------------------------------\n";
} // if rank_changed
#endif
#endif
endSetKartPositions();
} // updateRacePosition
/** Is called by check structures if a kart starts a new lap.
* \param kart_index Index of the kart.
*/
void LinearWorld::newLap(unsigned int kart_index)
{
KartInfo &kart_info = m_kart_info[kart_index];
Kart *kart = m_karts[kart_index];
// Don't do anything if a kart that has already finished the race
// crosses the start line again. This avoids 'fastest lap' messages
// if the end controller does a fastest lap.
if(kart->hasFinishedRace()) return;
const int lap_count = race_manager->getNumLaps();
// Only increase the lap counter and set the new time if the
// kart hasn't already finished the race (otherwise the race_gui
// will begin another countdown).
if(kart_info.m_race_lap+1 <= lap_count)
{
assert(kart->getWorldKartId()==kart_index);
setTimeAtLapForKart(getTime(), kart_index );
kart_info.m_race_lap++ ;
}
// Last lap message (kart_index's assert in previous block already)
if(kart_info.m_race_lap+1 == lap_count)
{
m_race_gui->addMessage(_("Final lap!"), m_karts[kart_index],
3.0f, 40, video::SColor(255, 210, 100, 50), true);
if(!m_last_lap_sfx_played && lap_count > 1)
{
m_last_lap_sfx->play();
m_last_lap_sfx_played = true;
m_last_lap_sfx_playing = true;
// In case that no music is defined
if(music_manager->getCurrentMusic() && music_manager->getMasterMusicVolume() > 0.2f)
{
music_manager->getCurrentMusic()->setTemporaryVolume(0.2f);
}
}
}
// The race positions must be updated here: consider the situation where
// the first kart does not cross the finish line in its last lap, instead
// it passes it, the kart reverses and crosses the finishing line
// backwards. Just before crossing the finishing line the kart will be on
// the last lap, but with a distance along the track close to zero.
// Therefore its position will be wrong. If the race position gets updated
// after increasing the number of laps (but before tagging the kart to have
// finished the race) the position will be correct (since the kart now
// has one additional lap it will be ahead of the other karts).
// Without this call the incorrect position for this kart would remain
// (since a kart that has finished the race does not get its position
// changed anymore), potentially resulting in a duplicated race position
// (since the first kart does not have position 1, no other kart can get
// position 1, so one rank will be duplicated).
// Similarly the situation can happen if the distance along track should
// go back to zero before actually crossing the finishing line. While this
// should not happen, it could potentially be caused by floating point
// errors. In this case the call to updateRacePosition will avoid
// duplicated race positions as well.
updateRacePosition();
// Race finished
if(kart_info.m_race_lap >= race_manager->getNumLaps() && raceHasLaps())
{
// A client wait does not detect race finished by itself, it will
// receive a message from the server. So a client does not do
// anything here.
if(network_manager->getMode()!=NetworkManager::NW_CLIENT)
{
kart->finishedRace(getTime());
}
}
{
float time_per_lap;
if (kart_info.m_race_lap == 1) // just completed first lap
{
time_per_lap=getTime();
}
else //completing subsequent laps
{
time_per_lap=getTime() - kart_info.m_lap_start_time;
}
// if new fastest lap
if(time_per_lap < getFastestLapTime() && raceHasLaps() &&
kart_info.m_race_lap>0)
{
setFastestLap(kart, time_per_lap);
m_race_gui->addMessage(_("New fastest lap"), NULL,
2.0f, 40, video::SColor(255, 100, 210, 100), true);
std::string s = StringUtils::timeToString(time_per_lap);
irr::core::stringw m_fastest_lap_message;
//I18N: as in "fastest lap: 60 seconds by Wilber"
m_fastest_lap_message += StringUtils::insertValues(_("%s by %s"), s.c_str(), kart->getName().c_str()).c_str();
m_race_gui->addMessage(m_fastest_lap_message, NULL,
2.0f, 40, video::SColor(255, 100, 210, 100));
} // end if new fastest lap
}
kart_info.m_lap_start_time = getTime();
} // newLap