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Check for active upper stage before dropping booster

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If there are multiple independent motor clusters in a stage, each of them can attempt a separation event. When the second event happens, there is no longer an active upper stage, so the separation results in a simulation branch with no active stages.  This causes a NaN exception as the mass is 0.
This commit is contained in:
JoePfeiffer 2022-03-09 11:01:18 -07:00
parent f8f0e5d12c
commit 5ac829ea78
1 changed files with 20 additions and 16 deletions
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36
core/src/net/sf/openrocket/simulation/BasicEventSimulationEngine.java
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@ -425,24 +425,28 @@ public class BasicEventSimulationEngine implements SimulationEngine {
}
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.push(boosterStatus);
log.info(String.format("==>> @ %g; from Branch: %s ---- Branching: %s ---- \n",
currentStatus.getSimulationTime(),
currentStatus.getFlightData().getBranchName(), boosterStatus.getFlightData().getBranchName()));
if (currentStatus.getConfiguration().isStageActive(stageNumber-1)) {
// Record the event.
currentStatus.getFlightData().addEvent(event);
// 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.push(boosterStatus);
log.info(String.format("==>> @ %g; from Branch: %s ---- Branching: %s ---- \n",
currentStatus.getSimulationTime(),
currentStatus.getFlightData().getBranchName(), boosterStatus.getFlightData().getBranchName()));
} else {
log.debug("upper stage is not active; not performing separation");
}
break;
}