/**
* @return <code>true</code> if the vehicle was successfully moved over the node, <code>false
* </code> otherwise (e.g. in case where the next link is jammed)
*/
private boolean moveVehicleOverNode(
final QVehicle veh, final QInternalI fromLaneBuffer, final double now) {
Id<Link> nextLinkId = veh.getDriver().chooseNextLinkId();
Link currentLink = veh.getCurrentLink();
if ((!fromLaneBuffer.hasGreenForToLink(nextLinkId))) {
// there is no longer a stuck check for red links. This means that
// in case of an infinite red time the simulation will not stop automatically because
// vehicles waiting in front of the red signal will never reach their destination. dg, mar'14
return false;
}
if (nextLinkId == null) {
log.error(
"Agent has no or wrong route! agentId="
+ veh.getDriver().getId()
+ " currentLink="
+ currentLink.getId().toString()
+ ". The agent is removed from the simulation.");
moveVehicleFromInlinkToAbort(veh, fromLaneBuffer, now);
return true;
}
QLinkInternalI nextQueueLink = network.getNetsimLinks().get(nextLinkId);
if (!checkNextLinkSemantics(currentLink, nextLinkId, nextQueueLink, veh)) {
moveVehicleFromInlinkToAbort(veh, fromLaneBuffer, now);
return true;
}
if (nextQueueLink.isAcceptingFromUpstream()) {
moveVehicleFromInlinkToOutlink(veh, fromLaneBuffer, nextQueueLink);
return true;
}
if (vehicleIsStuck(fromLaneBuffer, now)) {
/* We just push the vehicle further after stucktime is over, regardless
* of if there is space on the next link or not.. optionally we let them
* die here, we have a config setting for that!
*/
if (network.simEngine.getMobsim().getScenario().getConfig().qsim().isRemoveStuckVehicles()) {
moveVehicleFromInlinkToAbort(veh, fromLaneBuffer, now);
return false;
} else {
moveVehicleFromInlinkToOutlink(veh, fromLaneBuffer, nextQueueLink);
return true;
// (yyyy why is this returning `true'? Since this is a fix to avoid gridlock, this should
// proceed in small steps.
// kai, feb'12)
}
}
return false;
}
private void moveVehicleFromInlinkToAbort(
final QVehicle veh, final QInternalI fromLane, final double now) {
fromLane.popFirstVehicle();
// first treat the passengers:
for (PassengerAgent pp : veh.getPassengers()) {
if (pp instanceof MobsimAgent) {
((MobsimAgent) pp).setStateToAbort(now);
network.simEngine.internalInterface.arrangeNextAgentState((MobsimAgent) pp);
} else if (wrnCnt < 1) {
wrnCnt++;
log.warn(
"encountering PassengerAgent that cannot be cast into a MobsimAgent; cannot say if this is a problem");
log.warn(Gbl.ONLYONCE);
}
}
// now treat the driver:
veh.getDriver().setStateToAbort(now);
network.simEngine.internalInterface.arrangeNextAgentState(veh.getDriver());
}
private boolean vehicleIsStuck(final QInternalI fromLaneBuffer, final double now) {
return (now - fromLaneBuffer.getLastMovementTimeOfFirstVehicle())
> network.simEngine.getStuckTime();
}
private static void moveVehicleFromInlinkToOutlink(
final QVehicle veh, final QInternalI fromLane, QLinkInternalI nextQueueLink) {
fromLane.popFirstVehicle();
veh.getDriver().notifyMoveOverNode(nextQueueLink.getLink().getId());
nextQueueLink.addFromUpstream(veh);
}