Added new scenario element "AbsorbingArea" to package "org.vadere.state" and included it into GUI.

New scenario element "AbsorbingArea" is not handled in:
- AbsorbingAreaController (this class is missing completely at the moment).
- MigrationAssistant (must add node '"absorbingAreas" : [ ]' to topography tree).
- DefaultConfig (to be able to change color).
- TikzGenerator (must use "topography.getAbsorbingAreas()" to iterate over the new scenario element).

VadereGui/resources/messages.properties

@@ -306,6 +306,7 @@ TopographyCreator.btnTranslation.tooltip=Translate topography
 TopographyCreator.btnElementTranslation.tooltip=Translate topography elements
 TopographyCreator.btnInsertObstacle.tooltip=Obstacle
 TopographyCreator.btnInsertTarget.tooltip=Target
+TopographyCreator.btnInsertAbsorbingArea.tooltip=Absorbing Area
 TopographyCreator.btnInsertSource.tooltip=Source
 TopographyCreator.btnInsertStairs.tooltip=Stairs
 TopographyCreator.btnErase.tooltip=Eraser

VadereGui/resources/messages_de_DE.properties

@@ -298,6 +298,7 @@ TopographyCreator.btnCutTopography.tooltip=Szenario ausschneiden
 TopographyCreator.btnInsertPedestrian.tooltip=Fu\u00dfg\u00e4nger
 TopographyCreator.btnInsertObstacle.tooltip=Hindernis
 TopographyCreator.btnInsertTarget.tooltip=Ziel
+TopographyCreator.btnInsertAbsorbingArea.tooltip=Absorbierender Bereich
 TopographyCreator.btnTopographyBound.tooltip=Topographie Grenze
 TopographyCreator.btnTranslation.tooltip=Topographie verschieben
 TopographyCreator.btnElementTranslation.tooltip=Elemente der Topography verschieben

VadereGui/src/org/vadere/gui/components/model/DefaultModel.java

@@ -102,6 +102,9 @@ public abstract class DefaultModel<T extends DefaultConfig> extends Observable i
 			case TARGET:
 				c = getConfig().getTargetColor();
 				break;
+			case ABSORBING_AREA:
+				c = Color.RED;
+				break;
 			default:
 				c = Color.RED;
 		}

VadereGui/src/org/vadere/gui/topographycreator/model/TopographyBuilder.java

@@ -12,14 +12,7 @@ import org.vadere.gui.topographycreator.control.AttributeModifier;
 import org.vadere.state.attributes.scenario.AttributesAgent;
 import org.vadere.state.attributes.scenario.AttributesCar;
 import org.vadere.state.attributes.scenario.AttributesTopography;
-import org.vadere.state.scenario.Obstacle;
-import org.vadere.state.scenario.Pedestrian;
-import org.vadere.state.scenario.ScenarioElement;
-import org.vadere.state.scenario.Source;
-import org.vadere.state.scenario.Stairs;
-import org.vadere.state.scenario.Target;
-import org.vadere.state.scenario.Teleporter;
-import org.vadere.state.scenario.Topography;
+import org.vadere.state.scenario.*;
 import org.vadere.util.geometry.shapes.VPoint;
 import org.vadere.util.geometry.shapes.VShape;
 
@@ -42,6 +35,7 @@ public class TopographyBuilder implements Iterable<ScenarioElement> {
 	private LinkedList<Stairs> stairs;
 	private LinkedList<Source> sources;
 	private LinkedList<Target> targets;
+	private LinkedList<AbsorbingArea> absorbingAreas;
 	private Teleporter teleporter;
 	private LinkedList<ScenarioElement> topographyElements;
 	private AttributesTopography attributes;
@@ -57,6 +51,7 @@ public class TopographyBuilder implements Iterable<ScenarioElement> {
 		stairs = new LinkedList<>();
 		sources = new LinkedList<>();
 		targets = new LinkedList<>();
+		absorbingAreas = new LinkedList<>();
 		topographyElements = new LinkedList<>();
 		attributes = new AttributesTopography();
 	}
@@ -77,6 +72,7 @@ public class TopographyBuilder implements Iterable<ScenarioElement> {
 			}
 			sources = new LinkedList<>(topography.getSources());
 			targets = new LinkedList<>(topography.getTargets());
+			absorbingAreas = new LinkedList<>(topography.getAbsorbingAreas());
 			teleporter = topography.getTeleporter();
 		} catch (SecurityException | IllegalArgumentException e) {
 			e.printStackTrace();
@@ -90,6 +86,7 @@ public class TopographyBuilder implements Iterable<ScenarioElement> {
 		topographyElements.addAll(pedestrians);
 		topographyElements.addAll(sources);
 		topographyElements.addAll(targets);
+		topographyElements.addAll(absorbingAreas);
 	}
 
 	/**
@@ -133,6 +130,9 @@ public class TopographyBuilder implements Iterable<ScenarioElement> {
 		for (Target target : targets)
 			topography.addTarget(target);
 
+		for (AbsorbingArea absorbingArea : absorbingAreas)
+			topography.addAbsorbingArea(absorbingArea);
+
 		for (AgentWrapper pedestrian : pedestrians)
 			topography.addInitialElement(pedestrian.getAgentInitialStore());
 
@@ -167,6 +167,8 @@ public class TopographyBuilder implements Iterable<ScenarioElement> {
 				return pedestrians.remove(element);
 			case TARGET:
 				return targets.remove(element);
+			case ABSORBING_AREA:
+				return absorbingAreas.remove(element);
 			case SOURCE:
 				return sources.remove(element);
 			default:
@@ -222,12 +224,23 @@ public class TopographyBuilder implements Iterable<ScenarioElement> {
 		this.targets.add(target);
 	}
 
+	public void addAbsorbingArea(final AbsorbingArea absorbingArea) {
+		this.topographyElements.add(absorbingArea);
+		this.absorbingAreas.add(absorbingArea);
+	}
+
 	public Target removeLastTarget() {
 		Target target = targets.removeLast();
 		topographyElements.remove(target);
 		return target;
 	}
 
+	public AbsorbingArea removeLastAbsorbingArea() {
+		AbsorbingArea absorbingArea = absorbingAreas.removeLast();
+		topographyElements.remove(absorbingArea);
+		return absorbingArea;
+	}
+
 	public Source removeLastSource() {
 		Source source = sources.removeLast();
 		topographyElements.remove(source);
@@ -274,6 +287,10 @@ public class TopographyBuilder implements Iterable<ScenarioElement> {
 		return targets.iterator();
 	}
 
+	public Iterator<AbsorbingArea> getAbsorbingAreaIterator() {
+		return absorbingAreas.iterator();
+	}
+
 	public Iterator<Source> getSourceIterator() {
 		return sources.iterator();
 	}

VadereGui/src/org/vadere/gui/topographycreator/model/TopographyCreatorModel.java

@@ -196,6 +196,9 @@ public class TopographyCreatorModel extends DefaultModel implements IDrawPanelMo
 			case TARGET:
 				element = topographyBuilder.removeLastTarget();
 				break;
+			case ABSORBING_AREA:
+				element = topographyBuilder.removeLastAbsorbingArea();
+				break;
 			case TELEPORTER:
 				element = topographyBuilder.removeTeleporter();
 				break;
@@ -294,6 +297,9 @@ public class TopographyCreatorModel extends DefaultModel implements IDrawPanelMo
 			case TARGET:
 				topographyBuilder.addTarget((org.vadere.state.scenario.Target) shape);
 				break;
+			case ABSORBING_AREA:
+				topographyBuilder.addAbsorbingArea((org.vadere.state.scenario.AbsorbingArea) shape);
+				break;
 			case TELEPORTER:
 				topographyBuilder.setTeleporter((org.vadere.state.scenario.Teleporter) shape);
 				break;

VadereGui/src/org/vadere/gui/topographycreator/model/TopographyElementFactory.java

 package org.vadere.gui.topographycreator.model;
 
 import org.vadere.state.attributes.Attributes;
-import org.vadere.state.attributes.scenario.AttributesObstacle;
-import org.vadere.state.attributes.scenario.AttributesSource;
-import org.vadere.state.attributes.scenario.AttributesStairs;
-import org.vadere.state.attributes.scenario.AttributesTarget;
+import org.vadere.state.attributes.scenario.*;
 import org.vadere.state.scenario.ScenarioElement;
 import org.vadere.state.types.ScenarioElementType;
 import org.vadere.util.geometry.shapes.Vector2D;
@@ -35,6 +32,8 @@ public class TopographyElementFactory {
 				return new org.vadere.state.scenario.Source(new AttributesSource(-1, shape));
 			case TARGET:
 				return new org.vadere.state.scenario.Target(new AttributesTarget(shape));
+			case ABSORBING_AREA:
+				return new org.vadere.state.scenario.AbsorbingArea(new AttributesAbsorbingArea(shape));
 			case PEDESTRIAN:
 				return new AgentWrapper(((VCircle) shape).getCenter());
 			default:
@@ -51,6 +50,8 @@ public class TopographyElementFactory {
 			return new org.vadere.state.scenario.Source((AttributesSource) attributes);
 		} else if (attributes instanceof AttributesTarget) {
 			return new org.vadere.state.scenario.Target((AttributesTarget) attributes);
+		} else if (attributes instanceof AttributesAbsorbingArea) {
+			return new org.vadere.state.scenario.AbsorbingArea((AttributesAbsorbingArea) attributes);
 		} else {
 			throw new IllegalArgumentException("unsupported Attributes.");
 		}

VadereGui/src/org/vadere/gui/topographycreator/view/TopographyCreatorRenderer.java

@@ -37,6 +37,7 @@ public class TopographyCreatorRenderer  extends DefaultRenderer {
 		renderers[ScenarioElementType.PEDESTRIAN.ordinal()] = this::renderFilledShape;
 		renderers[ScenarioElementType.SOURCE.ordinal()] = this::renderFilledShape;
 		renderers[ScenarioElementType.TARGET.ordinal()] = this::renderFilledShape;
+		renderers[ScenarioElementType.ABSORBING_AREA.ordinal()] = this::renderFilledShape;
 		renderers[ScenarioElementType.STAIRS.ordinal()] = this::renderStair;
 		renderers[ScenarioElementType.TELEPORTER.ordinal()] = this::renderFilledShape;
 		renderers[ScenarioElementType.CAR.ordinal()] = this::renderFilledShape;

VadereGui/src/org/vadere/gui/topographycreator/view/TopographyWindow.java

@@ -229,6 +229,10 @@ public class TopographyWindow extends JPanel {
 		TopographyAction switchToTargetAction = new ActionSwitchCategory("switch to targets", panelModel,
 				ScenarioElementType.TARGET, selectRectangleAction);
 
+		/* switch category to absorbing areas action */
+		TopographyAction switchToAbsorbingAreaAction = new ActionSwitchCategory("switch to absorbing areas", panelModel,
+				ScenarioElementType.ABSORBING_AREA, selectRectangleAction);
+
 		/* switch category to stairs action */
 		TopographyAction switchToStairsAction = new ActionSwitchCategory("switch to stairs", panelModel,
 				ScenarioElementType.STAIRS, selectRectangleAction);
@@ -255,6 +259,7 @@ public class TopographyWindow extends JPanel {
 
 		List<Action> obstacleAndTargetDrawModes = new ArrayList<>();
 		List<Action> sourceDrawModes = new ArrayList<>();
+		List<Action> absorbingAreaDrawModes = new ArrayList<>();
 
 		obstacleAndTargetDrawModes.add(rectangle);
 		obstacleAndTargetDrawModes.add(pen);
@@ -265,6 +270,10 @@ public class TopographyWindow extends JPanel {
 		sourceDrawModes.add(pen2);
 		sourceDrawModes.add(dot);
 
+		absorbingAreaDrawModes.add(rectangle);
+		absorbingAreaDrawModes.add(pen);
+		absorbingAreaDrawModes.add(pen2);
+
 		/* open obstacle paint method dialog action */
 		JButton obsButton = new JButton();
 		TopographyAction openObstacleDialog = new ActionOpenDrawOptionMenu(
@@ -278,6 +287,12 @@ public class TopographyWindow extends JPanel {
 				.getResource("/icons/target_icon.png")), panelModel, switchToTargetAction, targetButton,
 				obstacleAndTargetDrawModes);
 
+		/* open absorbing area paint method dialog action */
+		JButton absorbingAreaButton = new JButton();
+		TopographyAction openAbsorbingAreaDialog = new ActionOpenDrawOptionMenu("AbsorbingArea", new ImageIcon(Resources.class
+				.getResource("/icons/emergency_exit.png")), panelModel, switchToAbsorbingAreaAction, absorbingAreaButton,
+				absorbingAreaDrawModes);
+
 		/* open stairs paint method dialog action */
 		JButton stairsButton = new JButton();
 		TopographyAction openStairsDialog = new ActionOpenDrawOptionMenu("Stairs", new ImageIcon(Resources.class
@@ -345,6 +360,8 @@ public class TopographyWindow extends JPanel {
 		toolbar.addSeparator(new Dimension(5, 50));
 		addActionToToolbar(toolbar, openObstacleDialog, "TopographyCreator.btnInsertObstacle.tooltip",
 				obsButton);
+		addActionToToolbar(toolbar, openAbsorbingAreaDialog, "TopographyCreator.btnInsertAbsorbingArea.tooltip",
+				absorbingAreaButton);
 		addActionToToolbar(toolbar, closeDialogAction, "TopographyCreator.btnInsertPedestrian.tooltip");
 		addActionToToolbar(toolbar, openStairsDialog, "TopographyCreator.btnInsertStairs.tooltip",
 				stairsButton);

VadereModelTests/TestEvents/scenarios/bang_event_2_sources_2_targets_osm_sequential.scenario

@@ -164,6 +164,7 @@
         "startingWithRedLight" : false,
         "nextSpeed" : -1.0
       } ],
+      "absorbingAreas" : [ ],
       "sources" : [ {
         "id" : 1,
         "shape" : {

VadereModelTests/TestEvents/scenarios/wait_event_2_sources_2_targets_osm_event_driven.scenario

@@ -164,6 +164,7 @@
         "startingWithRedLight" : false,
         "nextSpeed" : -1.0
       } ],
+      "absorbingAreas" : [ ],
       "sources" : [ {
         "id" : 1,
         "shape" : {

VadereModelTests/TestEvents/scenarios/wait_event_2_sources_2_targets_osm_sequential.scenario

@@ -164,6 +164,7 @@
         "startingWithRedLight" : false,
         "nextSpeed" : -1.0
       } ],
+      "absorbingAreas" : [ ],
       "sources" : [ {
         "id" : 1,
         "shape" : {

VadereModelTests/TestEvents/scenarios/wait_event_recurring_2_sources_2_targets_osm_sequential.scenario

@@ -164,6 +164,7 @@
         "startingWithRedLight" : false,
         "nextSpeed" : -1.0
       } ],
+      "absorbingAreas" : [ ],
       "sources" : [ {
         "id" : 1,
         "shape" : {

VadereModelTests/TestEvents/scenarios/wait_in_area_event_2_sources_2_targets_bhm.scenario

@@ -152,6 +152,7 @@
         "startingWithRedLight" : false,
         "nextSpeed" : -1.0
       } ],
+      "absorbingAreas" : [ ],
       "sources" : [ {
         "id" : 1,
         "shape" : {

VadereModelTests/TestEvents/scenarios/wait_in_area_event_2_sources_2_targets_osm_sequential.scenario

@@ -164,6 +164,7 @@
         "startingWithRedLight" : false,
         "nextSpeed" : -1.0
       } ],
+      "absorbingAreas" : [ ],
       "sources" : [ {
         "id" : 1,
         "shape" : {

VadereState/src/org/vadere/state/attributes/scenario/AttributesAbsorbingArea.java

+package org.vadere.state.attributes.scenario;
+
+import org.vadere.state.attributes.AttributesEmbedShape;
+import org.vadere.util.geometry.shapes.VShape;
+
+/**
+ * Attributes of an absorbing area, used by "AbsorbingAreaController" during simulation.
+ */
+public class AttributesAbsorbingArea extends AttributesEmbedShape {
+
+    // Variables
+    private int id = ID_NOT_SET;
+
+    /**
+     * Shape and position.
+     */
+    private VShape shape;
+    /**
+     * Waiting time in seconds on this area before absorbing the element.
+     */
+    private double waitingTime = 0;
+    /**
+     * Within this distance, pedestrians have reached the absorbing area.
+     */
+    private double deletionDistance = 0.1;
+
+    // Constructors
+    public AttributesAbsorbingArea() {
+    }
+
+    public AttributesAbsorbingArea(final VShape shape) {
+        this.shape = shape;
+    }
+
+    public AttributesAbsorbingArea(final VShape shape, final int id) {
+        this.shape = shape;
+        this.id = id;
+    }
+
+    public AttributesAbsorbingArea(final VShape shape, final int id, double waitingTime, double deletionDistance) {
+        this.shape = shape;
+        this.id = id;
+        this.waitingTime = waitingTime;
+        this.deletionDistance = deletionDistance;
+    }
+
+    // Getters
+    public int getId() {
+        return id;
+    }
+
+    @Override
+    public VShape getShape() {
+        return shape;
+    }
+
+    public double getWaitingTime() {
+        return waitingTime;
+    }
+
+    public double getDeletionDistance() {
+        return deletionDistance;
+    }
+
+    // Setters
+    public void setId(int id) {
+        checkSealed();
+        this.id = id;
+    }
+
+    @Override
+    public void setShape(VShape shape) {
+        this.shape = shape;
+    }
+
+    public void setWaitingTime(double waitingTime) {
+        checkSealed();
+        this.waitingTime = waitingTime;
+    }
+
+    public void setDeletionDistance(double deletionDistance) {
+        checkSealed();
+        this.deletionDistance = deletionDistance;
+    }
+
+}

VadereState/src/org/vadere/state/scenario/AbsorbingArea.java

+package org.vadere.state.scenario;
+
+import org.vadere.state.attributes.Attributes;
+import org.vadere.state.attributes.scenario.AttributesAbsorbingArea;
+import org.vadere.state.attributes.scenario.AttributesTarget;
+import org.vadere.state.types.ScenarioElementType;
+import org.vadere.util.geometry.shapes.VShape;
+
+import java.util.*;
+
+/**
+ * An area with an arbitrary shape that absorbs agents event if they have not reached their target.
+ * This can be useful when agents run away from targets (e.g., after a bang event).
+ */
+public class AbsorbingArea extends ScenarioElement implements Comparable<AbsorbingArea> {
+
+	// Variables
+	private AttributesAbsorbingArea attributes;
+	private final Map<Integer, Double> enteringTimes;
+	/**
+	 * Collection of listeners - unordered because it's order is not predictable
+	 * (at least not for clients).
+	 */
+	private final Collection<AbsorbingAreaListener> absorbingAreaListeners = new LinkedList<>();
+
+	// Constructors
+	public AbsorbingArea(AttributesAbsorbingArea attributes) {
+		this(attributes, new HashMap<>());
+	}
+
+	public AbsorbingArea(AttributesAbsorbingArea attributes, Map<Integer, Double> enteringTimes) {
+		this.attributes = attributes;
+		this.enteringTimes = enteringTimes;
+	}
+
+	// Getters
+	public double getWaitingTime() {
+		return attributes.getWaitingTime();
+	}
+
+	public Map<Integer, Double> getEnteringTimes() {
+		return enteringTimes;
+	}
+
+	@Override
+	public int getId() {
+		return attributes.getId();
+	}
+
+	@Override
+	public VShape getShape() {
+		return attributes.getShape();
+	}
+
+	@Override
+	public ScenarioElementType getType() {
+		return ScenarioElementType.ABSORBING_AREA;
+	}
+
+	@Override
+	public AttributesAbsorbingArea getAttributes() {
+		return attributes;
+	}
+
+	// Setters
+	@Override
+	public void setShape(VShape newShape) {
+		attributes.setShape(newShape);
+	}
+
+	@Override
+	public void setAttributes(Attributes attributes) {
+		this.attributes = (AttributesAbsorbingArea) attributes;
+	}
+
+	// Other Methods
+	@Override
+	public int hashCode() {
+		final int prime = 31;
+		int result = 1;
+		result = prime * result + ((attributes == null) ? 0 : attributes.hashCode());
+		return result;
+	}
+
+	@Override
+	public boolean equals(Object obj) {
+		if (this == obj) {
+			return true;
+		}
+		if (obj == null) {
+			return false;
+		}
+		if (!(obj instanceof AbsorbingArea)) {
+			return false;
+		}
+		AbsorbingArea other = (AbsorbingArea) obj;
+		if (attributes == null) {
+			if (other.attributes != null) {
+				return false;
+			}
+		} else if (!attributes.equals(other.attributes)) {
+			return false;
+		}
+		return true;
+	}
+
+	@Override
+	public int compareTo(AbsorbingArea otherTarget) {
+		return this.getId() - otherTarget.getId();
+	}
+
+	/** Models can register a target listener. */
+	public void addListener(AbsorbingAreaListener listener) {
+		absorbingAreaListeners.add(listener);
+	}
+
+	public boolean removeListener(TargetListener listener) {
+		return absorbingAreaListeners.remove(listener);
+	}
+
+	/** Returns an unmodifiable collection. */
+	public Collection<AbsorbingAreaListener> getAbsorbingAreaListeners() {
+		return Collections.unmodifiableCollection(absorbingAreaListeners);
+	}
+
+	@Override
+	public AbsorbingArea clone() {
+		return new AbsorbingArea((AttributesAbsorbingArea) attributes.clone());
+	}
+
+}

VadereState/src/org/vadere/state/scenario/AbsorbingAreaListener.java

+package org.vadere.state.scenario;
+
+public interface AbsorbingAreaListener {
+	void reachedAbsorbingArea(Target target, Agent agent);
+}

VadereState/src/org/vadere/state/scenario/Topography.java

@@ -2,6 +2,7 @@ package org.vadere.state.scenario;
 
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
 
+import org.apache.commons.math3.analysis.function.Abs;
 import org.jetbrains.annotations.NotNull;
 import org.vadere.state.attributes.Attributes;
 import org.vadere.state.attributes.scenario.AttributesAgent;
@@ -61,6 +62,11 @@ public class Topography implements DynamicElementMover{
 	 * iteration between frames.
 	 */
 	private final LinkedList<Target> targets;
+	/**
+	 * AbsorbingAreas of scenario by id. Tree maps ensures same update order during
+	 * iteration between frames.
+	 */
+	private final LinkedList<AbsorbingArea> absorbingAreas;
 
 	/**
 	 * List of obstacles used as a boundary for the whole topography.
@@ -106,6 +112,7 @@ public class Topography implements DynamicElementMover{
 		stairs = new LinkedList<>();
 		sources = new LinkedList<>();
 		targets = new LinkedList<>();
+		absorbingAreas = new LinkedList<>();
 		boundaryObstacles = new LinkedList<>();
 		
 		allScenarioElements.add(obstacles);
@@ -151,6 +158,16 @@ public class Topography implements DynamicElementMover{
 		return null;
 	}
 
+	public AbsorbingArea getAbsorbingArea(int targetId) {
+		for (AbsorbingArea absorbingArea : this.absorbingAreas) {
+			if (absorbingArea.getId() == targetId) {
+				return absorbingArea;
+			}
+		}
+
+		return null;
+	}
+
 	public double distanceToObstacle(@NotNull IPoint point) {
 		return this.obstacleDistanceFunction.apply(point);
 	}
@@ -167,6 +184,14 @@ public class Topography implements DynamicElementMover{
 		return getTargets().stream().filter(t -> t.getId() == targetId).anyMatch(targetPredicate);
 	}
 
+	public boolean containsAbsorbingArea(final Predicate<AbsorbingArea> absorbingAreaPredicate) {
+		return getAbsorbingAreas().stream().anyMatch(absorbingAreaPredicate);
+	}
+
+	public boolean containsAbsorbingArea(final Predicate<AbsorbingArea> absorbingAreaPredicate, final int absorbingAreaId) {
+		return getAbsorbingAreas().stream().filter(t -> t.getId() == absorbingAreaId).anyMatch(absorbingAreaPredicate);
+	}
+
 	/**
 	 * Returns a list containing Targets with the specific id. This list may be empty.
 	 */
@@ -182,6 +207,14 @@ public class Topography implements DynamicElementMover{
 										.toList())));
 	}
 
+	public Map<Integer, List<VShape>> getAbsorbingAreaShapes() {
+		return getAbsorbingAreas().stream()
+				.collect(Collectors
+						.groupingBy(absorbingArea -> absorbingArea.getId(), Collectors
+								.mapping(t -> t.getShape(), Collectors
+										.toList())));
+	}
+
 	@SuppressWarnings("unchecked")
 	private <T extends DynamicElement, TAttributes extends AttributesDynamicElement> DynamicElementContainer<T> getContainer(
 			Class<? extends T> elementType) {
@@ -250,6 +283,10 @@ public class Topography implements DynamicElementMover{
 		return targets;
 	}
 
+	public List<AbsorbingArea> getAbsorbingAreas() {
+		return absorbingAreas;
+	}
+
 	public List<Obstacle> getObstacles() {
 		return obstacles;
 	}
@@ -278,6 +315,10 @@ public class Topography implements DynamicElementMover{
 		this.targets.add(target);
 	}
 
+	public void addAbsorbingArea(AbsorbingArea absorbingArea) {
+		this.absorbingAreas.add(absorbingArea);
+	}
+
 	public void addObstacle(Obstacle obstacle) {
 		this.obstacles.add(obstacle);
 	}
@@ -399,6 +440,9 @@ public class Topography implements DynamicElementMover{