bool
MSLane::emit(MSVehicle& veh) throw(ProcessError) {
SUMOReal pos = 0;
SUMOReal speed = 0;
bool patchSpeed = true; // whether the speed shall be adapted to infrastructure/traffic in front
// determine the speed
const SUMOVehicleParameter &pars = veh.getParameter();
size_t stripId = getEmptyStartStripID(veh.getWidth());
switch (pars.departSpeedProcedure) {
case DEPART_SPEED_GIVEN:
speed = pars.departSpeed;
patchSpeed = false;
break;
case DEPART_SPEED_RANDOM:
speed = RandHelper::rand(MIN2(veh.getMaxSpeed(), getMaxSpeed()));
patchSpeed = true; // !!!(?)
break;
case DEPART_SPEED_MAX:
speed = MIN2(veh.getMaxSpeed(), getMaxSpeed());
patchSpeed = true; // !!!(?)
break;
case DEPART_SPEED_DEFAULT:
default:
// speed = 0 was set before
patchSpeed = false; // !!!(?)
break;
}
// determine the position
switch (pars.departPosProcedure) {
case DEPART_POS_GIVEN:
if (pars.departPos >= 0.) {
pos = pars.departPos;
} else {
pos = pars.departPos + getLength();
}
break;
case DEPART_POS_RANDOM:
pos = RandHelper::rand(getLength());
break;
case DEPART_POS_RANDOM_FREE: {
for (unsigned int i=0; i < 10; i++) {
// we will try some random positions ...
pos = RandHelper::rand(getLength());
if (isEmissionSuccess(&veh, speed, pos, patchSpeed, stripId)) {
return true;
}
}
// ... and if that doesn't work, we put the vehicle to the free position
return freeEmit(veh, speed);
}
break;
case DEPART_POS_FREE:
return freeEmit(veh, speed);
case DEPART_POS_DEFAULT:
default:
// pos = 0 was set before
break;
}
// try to emit
return isEmissionSuccess(&veh, speed, pos, patchSpeed, stripId);
}
// ------ Vehicle emission ------
bool
MSLane::freeEmit(MSVehicle& veh, SUMOReal mspeed) throw() {
size_t stripId = getEmptyStartStripID(veh.getWidth());
bool adaptableSpeed = true;
if (getVehicleNumber()==0) {
if (isEmissionSuccess(&veh, mspeed, 0, adaptableSpeed,stripId)) {
return true;
}
} else {
// check whether the vehicle can be put behind the last one if there is such
MSVehicle *leader = getLastVehicle(veh.getStrips());
if (leader != 0) {
SUMOReal leaderPos = leader->getPositionOnLane() - leader->getVehicleType().getLength();
SUMOReal speed = mspeed;
if (adaptableSpeed) {
speed = leader->getSpeed();
}
SUMOReal frontGapNeeded = veh.getCarFollowModel().getSecureGap(speed, leader->getCarFollowModel().getSpeedAfterMaxDecel(leader->getSpeed()));
if (leaderPos-frontGapNeeded>=0) {
SUMOReal tspeed = MIN2(veh.getCarFollowModel().ffeV(&veh, mspeed, frontGapNeeded, leader->getSpeed()), mspeed);
// check whether we can emit in behind the last vehicle on the lane
if (isEmissionSuccess(&veh, tspeed, 0, adaptableSpeed, stripId)) {
return true;
}
else std::cerr << "not successful emission 1" ;
}
} else {
if (isEmissionSuccess(&veh, mspeed, 0, adaptableSpeed, stripId)) {
return true;
}
else std::cerr << "not successful emission 2" ;
}
}
/* ashu
StripCont strips =getMyStrips();
for (StripContConstIter it=strips.begin(); it != strips.end(); ++it)
{if ((*it)->freeEmitCheck(veh, mspeed))
return true;}
//TODO: Uncomment and fix
// go through the lane, look for free positions (starting after the last vehicle)
MSLane::VehCont::iterator predIt = myVehicles.begin();
while (predIt!=myVehicles.end()) {
// get leader (may be zero) and follower
const MSVehicle *leader = predIt!=myVehicles.end()-1 ? *(predIt+1) : getPartialOccupator();
const MSVehicle *follower = *predIt;
// patch speed if allowed
SUMOReal speed = mspeed;
if (adaptableSpeed&&leader!=0) {
speed = MIN2(leader->getSpeed(), mspeed);
}
// compute the space needed to not collide with leader
SUMOReal frontMax = getLength();
if (leader!=0) {
SUMOReal leaderRearPos = leader->getPositionOnLane() - leader->getVehicleType().getLength();
if (leader == getPartialOccupator()) {
leaderRearPos = getPartialOccupatorEnd();
}
frontMax = leaderRearPos - veh.getCarFollowModel().getSecureGap(speed, leader->getCarFollowModel().getSpeedAfterMaxDecel(leader->getSpeed()));
}
// compute the space needed to not let the follower collide
const SUMOReal followPos = follower->getPositionOnLane();
const SUMOReal backGapNeeded = follower->getCarFollowModel().getSecureGap(follower->getSpeed(), veh.getCarFollowModel().getSpeedAfterMaxDecel(speed));
const SUMOReal backMin = followPos + backGapNeeded + veh.getVehicleType().getLength();
// check whether there is enough room (given some extra space for rounding errors)
if (frontMax>0 && backMin+POSITION_EPS<frontMax) {
// try emit vehicle (should be always ok)
if (isEmissionSuccess(&veh, speed, backMin+POSITION_EPS, adaptableSpeed)) {
std::cerr << "FIX working" ;
return true;
}
}
++predIt;
}
*/
//TODO: Recheck01 ___AB oct 2011
StripCont strips =getMyStrips();
for (StripContConstIter it=strips.begin(); it != strips.end(); ++it)
{
// go through the lane, look for free positions (starting after the last vehicle)
MSLane::VehCont::iterator predIt = (*it)->myVehicles.begin();
while (predIt!=(*it)->myVehicles.end()) {
// get leader (may be zero) and follower
const MSVehicle *leader = predIt!=(*it)->myVehicles.end()-1 ? *(predIt+1) : (*it)->getPartialOccupator();
const MSVehicle *follower = *predIt;
// patch speed if allowed
SUMOReal speed = mspeed;
if (adaptableSpeed&&leader!=0) {
speed = MIN2(leader->getSpeed(), mspeed);
}
// compute the space needed to not collide with leader
SUMOReal frontMax = getLength();
if (leader!=0) {
SUMOReal leaderRearPos = leader->getPositionOnLane() - leader->getVehicleType().getLength();
if (leader == (*it)->getPartialOccupator()) {
leaderRearPos = (*it)->getPartialOccupatorEnd();
}
frontMax = leaderRearPos - veh.getCarFollowModel().getSecureGap(speed, leader->getCarFollowModel().getSpeedAfterMaxDecel(leader->getSpeed()));
}
// compute the space needed to not let the follower collide
const SUMOReal followPos = follower->getPositionOnLane();
const SUMOReal backGapNeeded = follower->getCarFollowModel().getSecureGap(follower->getSpeed(), veh.getCarFollowModel().getSpeedAfterMaxDecel(speed));
const SUMOReal backMin = followPos + backGapNeeded + veh.getVehicleType().getLength();
// check whether there is enough room (given some extra space for rounding errors)
if (frontMax>0 && backMin+POSITION_EPS<frontMax) {
// try emit vehicle (should be always ok)
if (isEmissionSuccess(&veh, speed, backMin+POSITION_EPS, adaptableSpeed, stripId)) {
std::cerr << "FIX working" ;
return true;
}
}
++predIt;
}
}//for
// first check at lane's begin
std::cerr << "not successful emission last" ;
return false;
}