Issue Fix: #88

VadereModelTests/TestOSM/scenarios/basic_2_density_osm1.scenario

@@ -76,7 +76,7 @@
       "finishTime" : 200.0,
       "simTimeStepLength" : 0.4,
       "realTimeSimTimeRatio" : 0.0,
-      "writeSimulationData" : true,
+      "writeSimulationData" : false,
       "visualizationEnabled" : true,
       "printFPS" : false,
       "needsBoundary" : false,

VadereModelTests/TestOSM/scenarios/basic_3_1_wall_osm1.scenario

@@ -78,7 +78,7 @@
       "finishTime" : 30.0,
       "simTimeStepLength" : 0.4,
       "realTimeSimTimeRatio" : 0.0,
-      "writeSimulationData" : true,
+      "writeSimulationData" : false,
       "visualizationEnabled" : true,
       "printFPS" : false,
       "needsBoundary" : false,

VadereModelTests/TestOSM/scenarios/basic_3_2_wall_osm1.scenario

@@ -78,7 +78,7 @@
       "finishTime" : 30.0,
       "simTimeStepLength" : 0.4,
       "realTimeSimTimeRatio" : 0.0,
-      "writeSimulationData" : true,
+      "writeSimulationData" : false,
       "visualizationEnabled" : true,
       "printFPS" : false,
       "needsBoundary" : false,

VadereModelTests/TestOSM/scenarios/basic_3_3_wall_osm1.scenario

@@ -78,7 +78,7 @@
       "finishTime" : 30.0,
       "simTimeStepLength" : 0.4,
       "realTimeSimTimeRatio" : 0.0,
-      "writeSimulationData" : true,
+      "writeSimulationData" : false,
       "visualizationEnabled" : true,
       "printFPS" : false,
       "needsBoundary" : false,

VadereModelTests/TestOSM/scenarios/basic_4_1_wall_osm1.scenario

@@ -78,7 +78,7 @@
       "finishTime" : 30.0,
       "simTimeStepLength" : 0.4,
       "realTimeSimTimeRatio" : 0.0,
-      "writeSimulationData" : true,
+      "writeSimulationData" : false,
       "visualizationEnabled" : true,
       "printFPS" : false,
       "needsBoundary" : false,

VadereModelTests/TestOSM/scenarios/basic_4_1_wall_osm2.scenario

@@ -78,7 +78,7 @@
       "finishTime" : 30.0,
       "simTimeStepLength" : 0.4,
       "realTimeSimTimeRatio" : 0.0,
-      "writeSimulationData" : true,
+      "writeSimulationData" : false,
       "visualizationEnabled" : true,
       "printFPS" : false,
       "needsBoundary" : false,

VadereModelTests/TestOSM/scenarios/basic_4_2_wall_osm1.scenario

@@ -78,7 +78,7 @@
       "finishTime" : 30.0,
       "simTimeStepLength" : 0.4,
       "realTimeSimTimeRatio" : 0.0,
-      "writeSimulationData" : true,
+      "writeSimulationData" : false,
       "visualizationEnabled" : true,
       "printFPS" : false,
       "needsBoundary" : false,

VadereModelTests/TestOSM/scenarios/basic_4_2_wall_osm2.scenario

@@ -78,7 +78,7 @@
       "finishTime" : 30.0,
       "simTimeStepLength" : 0.4,
       "realTimeSimTimeRatio" : 0.0,
-      "writeSimulationData" : true,
+      "writeSimulationData" : false,
       "visualizationEnabled" : true,
       "printFPS" : false,
       "needsBoundary" : false,

VadereModelTests/TestOSM/scenarios/rimea_01_pathway_osm1.scenario

@@ -75,7 +75,7 @@
       "finishTime" : 1300.0,
       "simTimeStepLength" : 0.4,
       "realTimeSimTimeRatio" : 0.0,
-      "writeSimulationData" : true,
+      "writeSimulationData" : false,
       "visualizationEnabled" : true,
       "printFPS" : false,
       "needsBoundary" : false,

VadereModelTests/TestOSM/scenarios/rimea_01_pathway_osm2.scenario

@@ -75,7 +75,7 @@
       "finishTime" : 1300.0,
       "simTimeStepLength" : 0.4,
       "realTimeSimTimeRatio" : 0.0,
-      "writeSimulationData" : true,
+      "writeSimulationData" : false,
       "visualizationEnabled" : true,
       "printFPS" : false,
       "needsBoundary" : false,

VadereModelTests/TestOSM/scenarios/rimea_02_stairs_osm1.scenario

@@ -61,7 +61,7 @@
       "finishTime" : 500.0,
       "simTimeStepLength" : 0.4,
       "realTimeSimTimeRatio" : 0.1,
-      "writeSimulationData" : true,
+      "writeSimulationData" : false,
       "visualizationEnabled" : true,
       "printFPS" : false,
       "needsBoundary" : false,

VadereModelTests/TestOSM/scenarios/rimea_03_stairs_osm1.scenario

@@ -61,7 +61,7 @@
       "finishTime" : 500.0,
       "simTimeStepLength" : 0.4,
       "realTimeSimTimeRatio" : 0.1,
-      "writeSimulationData" : true,
+      "writeSimulationData" : false,
       "visualizationEnabled" : true,
       "printFPS" : false,
       "needsBoundary" : false,

VadereModelTests/TestOSM/scenarios/rimea_04_flow_osm1_025_d.scenario

@@ -61,7 +61,7 @@
       "finishTime" : 300.0,
       "simTimeStepLength" : 0.4,
       "realTimeSimTimeRatio" : 0.1,
-      "writeSimulationData" : true,
+      "writeSimulationData" : false,
       "visualizationEnabled" : true,
       "printFPS" : false,
       "needsBoundary" : false,

VadereModelTests/TestOSM/scenarios/rimea_04_flow_osm1_025_up.scenario

@@ -61,7 +61,7 @@
       "finishTime" : 300.0,
       "simTimeStepLength" : 0.4,
       "realTimeSimTimeRatio" : 0.1,
-      "writeSimulationData" : true,
+      "writeSimulationData" : false,
       "visualizationEnabled" : true,
       "printFPS" : false,
       "needsBoundary" : false,

VadereModelTests/TestOSM/scenarios/rimea_04_flow_osm1_050_d.scenario

@@ -61,7 +61,7 @@
       "finishTime" : 300.0,
       "simTimeStepLength" : 0.4,
       "realTimeSimTimeRatio" : 0.1,
-      "writeSimulationData" : true,
+      "writeSimulationData" : false,
       "visualizationEnabled" : true,
       "printFPS" : false,
       "needsBoundary" : false,

VadereModelTests/TestOSM/scenarios/rimea_04_flow_osm1_050_h.scenario

@@ -61,7 +61,7 @@
       "finishTime" : 300.0,
       "simTimeStepLength" : 0.4,
       "realTimeSimTimeRatio" : 0.1,
-      "writeSimulationData" : true,
+      "writeSimulationData" : false,
       "visualizationEnabled" : true,
       "printFPS" : false,
       "needsBoundary" : false,

VadereModelTests/TestOSM/scenarios/rimea_06_corner_osm1.scenario

@@ -92,7 +92,7 @@
       "finishTime" : 100.0,
       "simTimeStepLength" : 0.4,
       "realTimeSimTimeRatio" : 0.0,
-      "writeSimulationData" : true,
+      "writeSimulationData" : false,
       "visualizationEnabled" : true,
       "printFPS" : false,
       "needsBoundary" : false,

VadereModelTests/TestOSM/scenarios/rimea_06_corner_osm2.scenario

@@ -95,7 +95,7 @@
       "finishTime" : 100.0,
       "simTimeStepLength" : 0.4,
       "realTimeSimTimeRatio" : 0.0,
-      "writeSimulationData" : true,
+      "writeSimulationData" : false,
       "visualizationEnabled" : true,
       "printFPS" : false,
       "needsBoundary" : false,

VadereModelTests/TestOSM/scenarios/rimea_07_speeds_osm1.scenario

@@ -75,7 +75,7 @@
       "finishTime" : 500.0,
       "simTimeStepLength" : 0.4,
       "realTimeSimTimeRatio" : 0.0,
-      "writeSimulationData" : true,
+      "writeSimulationData" : false,
       "visualizationEnabled" : true,
       "printFPS" : false,
       "needsBoundary" : false,

VadereModelTests/TestOSM/scenarios/rimea_10_pathfinding_osm1.scenario

@@ -91,7 +91,7 @@
       "finishTime" : 50.0,
       "simTimeStepLength" : 0.4,
       "realTimeSimTimeRatio" : 0.1,
-      "writeSimulationData" : true,
+      "writeSimulationData" : false,
       "visualizationEnabled" : true,
       "printFPS" : false,
       "needsBoundary" : false,

VadereSimulator/src/org/vadere/simulator/control/Simulation.java

@@ -140,7 +140,9 @@ public class Simulation {
 			c.preLoop(simTimeInSec);
 		}
 
-		processorManager.preLoop(this.simulationState);
+		if(attributesSimulation.isWriteSimulationData()) {
+			processorManager.preLoop(this.simulationState);
+		}
 	}
 
 	private void postLoop() {
@@ -154,7 +156,9 @@ public class Simulation {
 			c.postLoop(simTimeInSec);
 		}
 
-		processorManager.postLoop(this.simulationState);
+		if(attributesSimulation.isWriteSimulationData()) {
+			processorManager.postLoop(this.simulationState);
+		}
 		topographyController.postLoop(this.simTimeInSec);
 	}
 
@@ -163,8 +167,10 @@ public class Simulation {
 	 */
 	public void run() {
 		try {
-			processorManager.setMainModel(mainModel);
-			processorManager.initOutputFiles();
+			if(attributesSimulation.isWriteSimulationData()) {
+				processorManager.setMainModel(mainModel);
+				processorManager.initOutputFiles();
+			}
 
 			preLoop();
 
@@ -192,7 +198,11 @@ public class Simulation {
 				assert assertAllPedestrianInBounds();
 				updateCallbacks(simTimeInSec);
 				updateWriters(simTimeInSec);
-				processorManager.update(this.simulationState);
+
+				if(attributesSimulation.isWriteSimulationData()) {
+					processorManager.update(this.simulationState);
+				}
+
 
 				for (PassiveCallback c : passiveCallbacks) {
 					c.postUpdate(simTimeInSec);
@@ -219,7 +229,9 @@ public class Simulation {
 			// this is necessary to free the resources (files), the SimulationWriter and processor are writing in!
 			postLoop();
 
-			processorManager.writeOutput();
+			if(attributesSimulation.isWriteSimulationData()) {
+				processorManager.writeOutput();
+			}
 			logger.info("Finished writing all output files");
 		}
 	}

VadereSimulator/src/org/vadere/simulator/projects/ScenarioRun.java

@@ -13,6 +13,7 @@ import java.util.Random;
 
 import org.apache.log4j.LogManager;
 import org.apache.log4j.Logger;
+import org.jetbrains.annotations.Nullable;
 import org.vadere.simulator.control.PassiveCallback;
 import org.vadere.simulator.control.Simulation;
 import org.vadere.simulator.models.MainModel;
@@ -38,7 +39,9 @@ public class ScenarioRun implements Runnable {
 	private final DataProcessingJsonManager dataProcessingJsonManager;
 
 	private Simulation simulation;
-	private ProcessorManager processorManager;
+
+	// the processor is null if no output is written i.e. if scenarioStore.attributesSimulation.isWriteSimulationData() is false.
+	private @Nullable ProcessorManager processorManager;
 
 	private final Scenario scenario;
 	private final ScenarioStore scenarioStore; // contained in scenario, but here for convenience
@@ -76,10 +79,12 @@ public class ScenarioRun implements Runnable {
 			final Random random = modelBuilder.getRandom();
 			
 			// prepare processors and simulation data writer
-			processorManager = dataProcessingJsonManager.createProcessorManager(mainModel);
+			if(scenarioStore.attributesSimulation.isWriteSimulationData()) {
+				processorManager = dataProcessingJsonManager.createProcessorManager(mainModel);
+			}
 
 			// Only create output directory and write .scenario file if there is any output.
-			if(!processorManager.isEmpty()) {
+			if(processorManager != null && !processorManager.isEmpty()) {
                 createAndSetOutputDirectory();
                 scenario.saveToOutputPath(outputPath);
             }
@@ -166,7 +171,10 @@ public class ScenarioRun implements Runnable {
 
 	private void sealAllAttributes() {
 		scenarioStore.sealAllAttributes();
-		processorManager.sealAllAttributes();
+
+		if(processorManager != null) {
+			processorManager.sealAllAttributes();
+		}
 	}
 
 }