@Override
public void solve(DefaultSolverScope<Solution_> solverScope) {
ConstructionHeuristicPhaseScope<Solution_> phaseScope =
new ConstructionHeuristicPhaseScope<>(solverScope);
phaseStarted(phaseScope);
for (Placement placement : entityPlacer) {
ConstructionHeuristicStepScope<Solution_> stepScope =
new ConstructionHeuristicStepScope<>(phaseScope);
stepStarted(stepScope);
decider.decideNextStep(stepScope, placement);
if (stepScope.getStep() == null) {
if (termination.isPhaseTerminated(phaseScope)) {
logger.trace(
" Step index ({}), time spent ({}) terminated without picking a nextStep.",
stepScope.getStepIndex(),
stepScope.getPhaseScope().calculateSolverTimeMillisSpentUpToNow());
} else if (stepScope.getSelectedMoveCount() == 0L) {
logger.warn(
" No doable selected move at step index ({}), time spent ({})."
+ " Terminating phase early.",
stepScope.getStepIndex(),
stepScope.getPhaseScope().calculateSolverTimeMillisSpentUpToNow());
} else {
throw new IllegalStateException(
"The step index ("
+ stepScope.getStepIndex()
+ ") has selected move count ("
+ stepScope.getSelectedMoveCount()
+ ") but failed to pick a nextStep ("
+ stepScope.getStep()
+ ").");
}
// Although stepStarted has been called, stepEnded is not called for this step
break;
}
doStep(stepScope);
stepEnded(stepScope);
phaseScope.setLastCompletedStepScope(stepScope);
if (termination.isPhaseTerminated(phaseScope)) {
break;
}
}
phaseEnded(phaseScope);
}
private void doStep(ConstructionHeuristicStepScope<Solution_> stepScope) {
Move nextStep = stepScope.getStep();
nextStep.doMove(stepScope.getScoreDirector());
predictWorkingStepScore(stepScope, nextStep);
}
