/**
* Handles events occurring during the flight from the event queue. Each event that has occurred
* before or at the current simulation time is processed. Suitable events are also added to the
* flight data.
*/
private boolean handleEvents() throws SimulationException {
boolean ret = true;
FlightEvent event;
log.trace("HandleEvents: current branch = " + currentStatus.getFlightData().getBranchName());
log.trace("EventQueue = " + currentStatus.getEventQueue().toString());
for (event = nextEvent(); event != null; event = nextEvent()) {
// Ignore events for components that are no longer attached to the rocket
if (event.getSource() != null
&& event.getSource().getParent() != null
&& !currentStatus.getConfiguration().isComponentActive(event.getSource())) {
continue;
}
// Call simulation listeners, allow aborting event handling
if (!SimulationListenerHelper.fireHandleFlightEvent(currentStatus, event)) {
continue;
}
if (event.getType() == FlightEvent.Type.RECOVERY_DEVICE_DEPLOYMENT) {
RecoveryDevice device = (RecoveryDevice) event.getSource();
if (!SimulationListenerHelper.fireRecoveryDeviceDeployment(currentStatus, device)) {
continue;
}
}
// Check for motor ignition events, add ignition events to queue
for (MotorClusterState state : currentStatus.getActiveMotors()) {
if (state.testForIgnition(event)) {
final double simulationTime = currentStatus.getSimulationTime();
MotorClusterState sourceState = (MotorClusterState) event.getData();
double ignitionDelay = 0;
if ((event.getType() == FlightEvent.Type.BURNOUT)
|| (event.getType() == FlightEvent.Type.EJECTION_CHARGE)) {
ignitionDelay = sourceState.getEjectionDelay();
}
final double ignitionTime = currentStatus.getSimulationTime() + ignitionDelay;
final RocketComponent mount = (RocketComponent) state.getMount();
// TODO: this event seems to get enqueue'd multiple times ...
log.info("Queueing Ignition Event for: " + state.toDescription() + " @: " + ignitionTime);
// log.info(" Because of "+event.getType().name()+" @"+event.getTime()+" from:
// "+event.getSource().getName());
addEvent(new FlightEvent(FlightEvent.Type.IGNITION, ignitionTime, mount, state));
}
}
// Check for stage separation event
for (AxialStage stage : currentStatus.getConfiguration().getActiveStages()) {
int stageNo = stage.getStageNumber();
if (stageNo == 0) continue;
StageSeparationConfiguration separationConfig =
stage.getSeparationConfigurations().get(this.fcid);
if (separationConfig.getSeparationEvent().isSeparationEvent(event, stage)) {
addEvent(
new FlightEvent(
FlightEvent.Type.STAGE_SEPARATION,
event.getTime() + separationConfig.getSeparationDelay(),
stage));
}
}
// Check for recovery device deployment, add events to queue
for (RocketComponent c : currentStatus.getConfiguration().getActiveComponents()) {
if (!(c instanceof RecoveryDevice)) continue;
DeploymentConfiguration deployConfig =
((RecoveryDevice) c).getDeploymentConfigurations().get(this.fcid);
if (deployConfig.isActivationEvent(event, c)) {
// Delay event by at least 1ms to allow stage separation to occur first
addEvent(
new FlightEvent(
FlightEvent.Type.RECOVERY_DEVICE_DEPLOYMENT,
event.getTime() + Math.max(0.001, deployConfig.getDeployDelay()),
c));
}
}
// Handle event
switch (event.getType()) {
case LAUNCH:
{
currentStatus.getFlightData().addEvent(event);
break;
}
case IGNITION:
{
MotorClusterState motorState = (MotorClusterState) event.getData();
log.info(
" Igniting motor: "
+ motorState.toDescription()
+ " @"
+ currentStatus.getSimulationTime());
motorState.ignite(event.getTime());
// Ignite the motor
currentStatus.setMotorIgnited(true);
currentStatus.getFlightData().addEvent(event);
// ... ignite ...uhh, again?
// TBH, I'm not sure what this call is for. It seems to be mostly a bunch of event
// distribution.
MotorConfigurationId motorId = motorState.getID();
MotorMount mount = (MotorMount) event.getSource();
if (!SimulationListenerHelper.fireMotorIgnition(
currentStatus, motorId, mount, motorState)) {
continue;
}
// and queue up the burnout for this motor, as well.
double duration = motorState.getMotor().getBurnTimeEstimate();
double burnout = currentStatus.getSimulationTime() + duration;
addEvent(
new FlightEvent(FlightEvent.Type.BURNOUT, burnout, event.getSource(), motorState));
break;
}
case LIFTOFF:
{
// Mark lift-off as occurred
currentStatus.setLiftoff(true);
currentStatus.getFlightData().addEvent(event);
break;
}
case LAUNCHROD:
{
// Mark launch rod as cleared
currentStatus.setLaunchRodCleared(true);
currentStatus.getFlightData().addEvent(event);
break;
}
case BURNOUT:
{
// If motor burnout occurs without lift-off, abort
if (!currentStatus.isLiftoff()) {
throw new SimulationLaunchException(
trans.get("BasicEventSimulationEngine.error.earlyMotorBurnout"));
}
// Add ejection charge event
MotorClusterState motorState = (MotorClusterState) event.getData();
motorState.burnOut(event.getTime());
AxialStage stage = motorState.getMount().getStage();
log.debug(
" adding EJECTION_CHARGE event for stage "
+ stage.getStageNumber()
+ ": "
+ stage.getName());
log.debug(
" .... for motor "
+ motorState.getMotor().getDesignation());
double delay = motorState.getEjectionDelay();
if (motorState.hasEjectionCharge()) {
addEvent(
new FlightEvent(
FlightEvent.Type.EJECTION_CHARGE,
currentStatus.getSimulationTime() + delay,
stage,
event.getData()));
}
currentStatus.getFlightData().addEvent(event);
break;
}
case EJECTION_CHARGE:
{
MotorClusterState motorState = (MotorClusterState) event.getData();
motorState.expend(event.getTime());
currentStatus.getFlightData().addEvent(event);
break;
}
case STAGE_SEPARATION:
{
// Record the event.
currentStatus.getFlightData().addEvent(event);
RocketComponent boosterStage = event.getSource();
final int stageNumber = boosterStage.getStageNumber();
// Mark the status as having dropped the booster
currentStatus.getConfiguration().clearStage(stageNumber);
// Prepare the simulation branch
SimulationStatus boosterStatus = new SimulationStatus(currentStatus);
boosterStatus.setFlightData(
new FlightDataBranch(boosterStage.getName(), FlightDataType.TYPE_TIME));
// Mark the booster status as only having the booster.
boosterStatus.getConfiguration().setOnlyStage(stageNumber);
toSimulate.add(boosterStatus);
log.info(
String.format(
"==>> @ %g; from Branch: %s ---- Branching: %s ---- \n",
currentStatus.getSimulationTime(),
currentStatus.getFlightData().getBranchName(),
boosterStatus.getFlightData().getBranchName()));
break;
}
case APOGEE:
// Mark apogee as reached
currentStatus.setApogeeReached(true);
currentStatus.getFlightData().addEvent(event);
// This apogee event might be the optimum if recovery has not already happened.
if (currentStatus.getSimulationConditions().isCalculateExtras()
&& currentStatus.getDeployedRecoveryDevices().size() == 0) {
currentStatus.getFlightData().setOptimumAltitude(currentStatus.getMaxAlt());
currentStatus.getFlightData().setTimeToOptimumAltitude(currentStatus.getMaxAltTime());
}
break;
case RECOVERY_DEVICE_DEPLOYMENT:
RocketComponent c = event.getSource();
int n = c.getStageNumber();
// Ignore event if stage not active
if (currentStatus.getConfiguration().isStageActive(n)) {
// TODO: HIGH: Check stage activeness for other events as well?
// Check whether any motor in the active stages is active anymore
for (MotorClusterState state : currentStatus.getActiveMotors()) {
if (state.isSpent()) {
continue;
}
currentStatus.getWarnings().add(Warning.RECOVERY_DEPLOYMENT_WHILE_BURNING);
}
// Check for launch rod
if (!currentStatus.isLaunchRodCleared()) {
currentStatus.getWarnings().add(Warning.RECOVERY_LAUNCH_ROD);
}
// Check current velocity
if (currentStatus.getRocketVelocity().length() > 20) {
currentStatus
.getWarnings()
.add(new Warning.HighSpeedDeployment(currentStatus.getRocketVelocity().length()));
}
currentStatus.setLiftoff(true);
currentStatus.getDeployedRecoveryDevices().add((RecoveryDevice) c);
// If we haven't already reached apogee, then we need to compute the actual coast time
// to determine the optimum altitude.
if (currentStatus.getSimulationConditions().isCalculateExtras()
&& !currentStatus.isApogeeReached()) {
FlightData coastStatus = computeCoastTime();
currentStatus.getFlightData().setOptimumAltitude(coastStatus.getMaxAltitude());
currentStatus.getFlightData().setTimeToOptimumAltitude(coastStatus.getTimeToApogee());
}
this.currentStepper = this.landingStepper;
this.currentStatus = currentStepper.initialize(currentStatus);
currentStatus.getFlightData().addEvent(event);
}
break;
case GROUND_HIT:
currentStatus.getFlightData().addEvent(event);
break;
case SIMULATION_END:
ret = false;
currentStatus.getFlightData().addEvent(event);
break;
case ALTITUDE:
log.trace("BasicEventSimulationEngine: Handling event " + event);
break;
case TUMBLE:
this.currentStepper = this.tumbleStepper;
this.currentStatus = currentStepper.initialize(currentStatus);
currentStatus.getFlightData().addEvent(event);
break;
}
}
if (1200 < currentStatus.getSimulationTime()) {
ret = false;
log.error("Simulation hit max time (1200s): aborting.");
currentStatus
.getFlightData()
.addEvent(
new FlightEvent(FlightEvent.Type.SIMULATION_END, currentStatus.getSimulationTime()));
}
// If no motor has ignited, abort
if (!currentStatus.isMotorIgnited()) {
throw new MotorIgnitionException(trans.get("BasicEventSimulationEngine.error.noIgnition"));
}
return ret;
}
/**
* Handles events occurring during the flight from the event queue. Each event that has occurred
* before or at the current simulation time is processed. Suitable events are also added to the
* flight data.
*/
private boolean handleEvents() throws SimulationException {
boolean ret = true;
FlightEvent event;
for (event = nextEvent(); event != null; event = nextEvent()) {
// Ignore events for components that are no longer attached to the rocket
if (event.getSource() != null
&& event.getSource().getParent() != null
&& !status.getConfiguration().isStageActive(event.getSource().getStageNumber())) {
continue;
}
// Call simulation listeners, allow aborting event handling
if (!SimulationListenerHelper.fireHandleFlightEvent(status, event)) {
continue;
}
if (event.getType() != FlightEvent.Type.ALTITUDE) {
log.verbose("BasicEventSimulationEngine: Handling event " + event);
}
if (event.getType() == FlightEvent.Type.IGNITION) {
MotorMount mount = (MotorMount) event.getSource();
MotorId motorId = (MotorId) event.getData();
MotorInstance instance = status.getMotorConfiguration().getMotorInstance(motorId);
if (!SimulationListenerHelper.fireMotorIgnition(status, motorId, mount, instance)) {
continue;
}
}
if (event.getType() == FlightEvent.Type.RECOVERY_DEVICE_DEPLOYMENT) {
RecoveryDevice device = (RecoveryDevice) event.getSource();
if (!SimulationListenerHelper.fireRecoveryDeviceDeployment(status, device)) {
continue;
}
}
// Check for motor ignition events, add ignition events to queue
for (MotorId id : status.getMotorConfiguration().getMotorIDs()) {
MotorMount mount = status.getMotorConfiguration().getMotorMount(id);
RocketComponent component = (RocketComponent) mount;
if (mount.getIgnitionEvent().isActivationEvent(event, component)) {
addEvent(
new FlightEvent(
FlightEvent.Type.IGNITION,
status.getSimulationTime() + mount.getIgnitionDelay(),
component,
id));
}
}
// Check for stage separation event
for (int stageNo : status.getConfiguration().getActiveStages()) {
if (stageNo == 0) continue;
Stage stage = (Stage) status.getConfiguration().getRocket().getChild(stageNo);
if (stage.getSeparationEvent().isSeparationEvent(event, stage)) {
addEvent(
new FlightEvent(
FlightEvent.Type.STAGE_SEPARATION,
event.getTime() + stage.getSeparationDelay(),
stage));
}
}
// Check for recovery device deployment, add events to queue
Iterator<RocketComponent> rci = status.getConfiguration().iterator();
while (rci.hasNext()) {
RocketComponent c = rci.next();
if (!(c instanceof RecoveryDevice)) continue;
if (((RecoveryDevice) c).getDeployEvent().isActivationEvent(event, c)) {
// Delay event by at least 1ms to allow stage separation to occur first
addEvent(
new FlightEvent(
FlightEvent.Type.RECOVERY_DEVICE_DEPLOYMENT,
event.getTime() + Math.max(0.001, ((RecoveryDevice) c).getDeployDelay()),
c));
}
}
// Handle event
switch (event.getType()) {
case LAUNCH:
{
status.getFlightData().addEvent(event);
break;
}
case IGNITION:
{
// Ignite the motor
MotorMount mount = (MotorMount) event.getSource();
RocketComponent component = (RocketComponent) mount;
MotorId motorId = (MotorId) event.getData();
MotorInstanceConfiguration config = status.getMotorConfiguration();
config.setMotorIgnitionTime(motorId, event.getTime());
status.setMotorIgnited(true);
status.getFlightData().addEvent(event);
break;
}
case LIFTOFF:
{
// Mark lift-off as occurred
status.setLiftoff(true);
status.getFlightData().addEvent(event);
break;
}
case LAUNCHROD:
{
// Mark launch rod as cleared
status.setLaunchRodCleared(true);
status.getFlightData().addEvent(event);
break;
}
case BURNOUT:
{
// If motor burnout occurs without lift-off, abort
if (!status.isLiftoff()) {
throw new SimulationLaunchException("Motor burnout without liftoff.");
}
// Add ejection charge event
String id = status.getConfiguration().getMotorConfigurationID();
MotorMount mount = (MotorMount) event.getSource();
double delay = mount.getMotorDelay(id);
if (delay != Motor.PLUGGED) {
addEvent(
new FlightEvent(
FlightEvent.Type.EJECTION_CHARGE,
status.getSimulationTime() + delay,
event.getSource(),
event.getData()));
}
status.getFlightData().addEvent(event);
break;
}
case EJECTION_CHARGE:
{
status.getFlightData().addEvent(event);
break;
}
case STAGE_SEPARATION:
{
// TODO: HIGH: Store lower stages to be simulated later
RocketComponent stage = event.getSource();
int n = stage.getStageNumber();
status.getConfiguration().setToStage(n - 1);
status.getFlightData().addEvent(event);
break;
}
case APOGEE:
// Mark apogee as reached
status.setApogeeReached(true);
status.getFlightData().addEvent(event);
break;
case RECOVERY_DEVICE_DEPLOYMENT:
RocketComponent c = event.getSource();
int n = c.getStageNumber();
// Ignore event if stage not active
if (status.getConfiguration().isStageActive(n)) {
// TODO: HIGH: Check stage activeness for other events as well?
// Check whether any motor in the active stages is active anymore
for (MotorId motorId : status.getMotorConfiguration().getMotorIDs()) {
int stage =
((RocketComponent) status.getMotorConfiguration().getMotorMount(motorId))
.getStageNumber();
if (!status.getConfiguration().isStageActive(stage)) continue;
if (!status.getMotorConfiguration().getMotorInstance(motorId).isActive()) continue;
status.getWarnings().add(Warning.RECOVERY_DEPLOYMENT_WHILE_BURNING);
}
// Check for launch rod
if (!status.isLaunchRodCleared()) {
status
.getWarnings()
.add(
Warning.fromString(
"Recovery device device deployed while on " + "the launch guide."));
}
// Check current velocity
if (status.getRocketVelocity().length() > 20) {
// TODO: LOW: Custom warning.
status
.getWarnings()
.add(
Warning.fromString(
"Recovery device deployment at high "
+ "speed ("
+ UnitGroup.UNITS_VELOCITY.toStringUnit(
status.getRocketVelocity().length())
+ ")."));
}
status.setLiftoff(true);
status.getDeployedRecoveryDevices().add((RecoveryDevice) c);
this.currentStepper = this.landingStepper;
this.status = currentStepper.initialize(status);
status.getFlightData().addEvent(event);
}
break;
case GROUND_HIT:
status.getFlightData().addEvent(event);
break;
case SIMULATION_END:
ret = false;
status.getFlightData().addEvent(event);
break;
case ALTITUDE:
break;
}
}
// If no motor has ignited, abort
if (!status.isMotorIgnited()) {
throw new MotorIgnitionException("No motors ignited.");
}
return ret;
}