eishub / bw4t

BlocksWorld for Teams (BW4T)

Blocks World for Teams

Blocks World for Teams (BW4T) is a testbed EIS environment for team coordination. BW4T allows for games with human-human, agent-agent and human-agent teams of variable sizes. The goal is to jointly deliver a sequence of colored blocks in a particular order as fast as possible. A complicating factor is that the players cannot see each other.

This page describes how users can install and use the Blocks World for Teams environment. For developer information please follow this Link to Developer details

Blocks World for Teams has a client-server architecture. This means that you need to install and run two parts to use it: a client and a server. The server is the Blocks World for Team Server where the real simulation takes place. The client is the agent programming environment, which communicates with the server to run the simulation. This architecture was chosen to allow multi-machine configurations, where multiple users can interact in the same Blocks World.

This environment is a general EIS environment, you can use it from GOAL but also from other EIS-compatible systems or even stand alone. To install GOAL, please refer to GOAL

We deliver a number of components to work with this environment:

• The BW4T user manual.
• The BW4T specification manual. explaining all percepts and actions that the BW4T environment provides.
• client, server, mapeditor, scenarioeditor. All available at the BW4T release page.

To install BW4T and for all details on how to use the environment and related tools, please consult the BW4T user manual.

WARNING The collisions and e-partner options are not completely ready for use.

BW4T Main Maven Module

This is the directory contains the main maven module. BW4T is split up in six submodules which are explained below. Each submodule is compiled and tested separately by Maven. A good overview of exactly how Maven module organization works can be found at Sonatype.

bw4t-client

The bw4t-client submodule is used either directly by a user or indirectly via GOAL. Basically this module allows you to connect an agent to the bw4t-server. If this is launched with the GUI enabled, the user is able to perform actions and see the percepts that the robot can perform and percept respectively.

bw4t-core

The bw4t-core submodule basically contains lots of "model"-classes which are needed by multiple other modules. For example the AbstractMapController can be found in this class, because it is needed for the bw4t-client as well as the bw4t-server.

bw4t-environment-store

The bw4t-environment-store allows you to configure all kinds of options regarding the map and/or environment.

bw4t-integration-test

This module performs integration testing, by launching the server and the client and performing a small test.

bw4t-scenario-editor

The scenario-editor allows you to configure connections options, epartners and the types of bots and their abilities/handicaps.

bw4t-server

The bw4t-server basically runs the bw4t environment with a given configuration to which clients can connect.

Dependency information

<repository>
  <id>eishub-mvn-repo</id>
  <url>https://raw.github.com/eishub/mvn-repo/master</url>
</repository>

The client artifact:

<dependency>
  <groupId>eishub.bw4t</groupId>
  <artifactId>bw4t-client</artifactId>
  <version>3.10.0</version>
</dependency>

The server artifact:

<dependency>
  <groupId>eishub.bw4t</groupId>
  <artifactId>bw4t-server</artifactId>
  <version>3.9.1</version>
</dependency>

bw4t's Issues

TODO Place the EPartner

Found TODO in method spawn(), in nl.tudelft.bw4t.server.environment.BW4TEnvironment.
TODO was placed above 'epartner.moveTo(point.getX(), point.getY());'

Scenario Editor: ExportToMas:generateAgentHierarchy()

TODO: Change this to goal file implementation and existing files.

Please clarify?!

Scenario Editor: Default Bot Configuration

Add default configurations for bots to the Scenario editor.

handleNewEntity1 function throws too many exceptions.

The handleNewEntity1 function in BW4TEnvironmentListener.java(in the BW4T-Client) throws EntityException, AgentException, ClassNotFoundException,NoSuchMethodException, InstantiationException, IllegalAccessException, InvocationTargetException, IOException, RelationException.

This should be reduced to one or two exceptions.

Usage of "new" BW4T Client in GOAL fails.

WARNING: WARNING: launch of MAS failed
because eis failed to start environment: failed to load the environment:
class "nl.tudelft.bw4t.client.startup.launcher" could not be loaded from "/opt/goal/goalagents/bw4t2/bw4t2/bw4t-client-3.0.1-jar-with-dependencies.jar": nl.tudelft.bw4t.client.startup.launcher.().java.lang.NoSuchMethodException: nl.tudelft.bw4t.client.startup.Launcher.()

Complexity reduction needed in ActionPopUpMenu.java

Basically the function ActionPopUpMenu.java#L24-L104 is covering the whole class. We should split this into multiple functions and refactor it.

Trello test ticket

Als het goed is komt dit ook in Trello

Client/Server: Human Player GUI - can't create e-partners

[AWT-EventQueue-0] INFO nl.tudelft.bw4t.client.controller.ClientMapController - creating epartner(68, -1)
When a config file with an e-partner is launched, it keeps trying to create the e-partner but it's never actually created.

BW4T spamming the Project Directory with Log files

The Tree Structure in the Package Explorer is being smudged with all kinds of log files.

• A separate directory ./log/ should contain all of the log files

Core - MapRenderSettingsConfiguration: Implement this

Core, nl.tudelft.bw4t.map.renderer.MapRenderSettingsConfiguration

To do in this class, namely 'Configuration screen for the map renderer'.

Sequence not logged when random generated

When a random sequence is being generated, the logger does not log the sequence because of the order in which the components are built.

closeToBox() should be changed

nl.tudelft.bw4t.client.gui.menu.MapOperations

TODO change this to use the the size of the robot and its arm-length

Kill() in RemoteEnvironment has commented code

nl.tudelft.bw4t.client.environment.RemoteEnvironment

There is a lot of commented code, but without explanation why it is commented/what it should do.

BW4T3 upgrade to EIS 0.4.1

BW4T3 is using an old version of EIS. When you kill the env it throws

WARNING: Environment returned an error
java.lang.NullPointerException
    at eis.EIDefaultImpl.notifyIfFree(EIDefaultImpl.java:351)
    at eis.EIDefaultImpl.freeAgent(EIDefaultImpl.java:558)
    at nl.tudelft.bw4t.server.BW4TServer.freeAgent(BW4TServer.java:265)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:322)
    at sun.rmi.transport.Transport$1.run(Transport.java:177)
    at sun.rmi.transport.Transport$1.run(Transport.java:174)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.rmi.transport.Transport.serviceCall(Transport.java:173)
    at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:556)
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:811)
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:670)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:745)
    at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:275)
    at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:252)
    at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:161)
    at java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(RemoteObjectInvocationHandler.java:194)
    at java.rmi.server.RemoteObjectInvocationHandler.invoke(RemoteObjectInvocationHandler.java:148)
    at com.sun.proxy.$Proxy1.freeAgent(Unknown Source)
    at nl.tudelft.bw4t.client.BW4TClient.freeAgent(BW4TClient.java:333)
    at nl.tudelft.bw4t.client.environment.RemoteEnvironment.freeAgent(RemoteEnvironment.java:286)
    at goal.core.runtime.service.environment.LocalMessagingEnvironment$Messages2Environment.invoke(LocalMessagingEnvironment.java:215)
    at goal.core.runtime.service.environmentport.actions.FreeAgent.invoke(FreeAgent.java:30)
    at goal.core.runtime.service.environment.LocalMessagingEnvironment$Messages2Environment.handleAction(LocalMessagingEnvironment.java:169)
    at goal.core.runtime.service.environment.LocalMessagingEnvironment$Messages2Environment.run(LocalMessagingEnvironment.java:153)
    at java.lang.Thread.run(Thread.java:745)

Time to finish in BW4T logs is total time running not time taken on logged run.

The log entry about time looks like this after several runs even if the particular runtime is just under 1 minute per set of solving the sequence:

Time to finish sequence is 3 minutes and 5 seconds

The same as the total time the server has been running.

total time is 3 minutes and 26 seconds

Make it possible to increase speed above 100fps

For applications such as automated testing, 100fps is still quite slow. It would be useful if the speed could be faster than this limit.

Server - RobotEntity: Code duplication

A lot of duplicated code with just 1 different argument. Should be set in the Entity interface or be generilized to lower duplication of code.

JavaDoc TODO client.controller.ClientMapController

Method processSequencePercept,
TODO: This function process a list of lists, seems like it should only process a list, why is this?

Client: Block pickup distance

Use the size and arm length to determine whether we can pick up a Block or EPartner.
nl.tudelft.bw4t.client.gui.menu.MapOperations:closeToBox()

Client: Method handleDeletedEntity uses unknown field

nl.tudelft.bw4t.client.environment.BW4TEnvironmentListener

This was in the double for loop:
if (agentB.getName().equals(agent)) {
agentB.setKilled();
if (agentData.get(agentB) != null) {
//FIXME agentData.get(agentB).stop = true;
}
agentData.remove(agentB);
return;
}

Removed the FIXME part for now.

Mystery nl.tudelft.bw4t.map Package

Does anyone know where this mystery nl.tudelft.bw4t.map package comes from as it is for example used in nl.tudelft.bw4t.map.Zone. I'm trying to fix some building problems and this keeps popping up as being non-existent.

https://github.com/MartinRogalla/BW4T/blob/master/src/nl/tudelft/bw4t/zone/DropZone.java#L39

Client: stop single HumanAgent

Closing one human agent currently stops the whole client, meaning all human and normal agents attached to it, not just one of the Entities.
nl.tudelft.bw4t.client.gui.ClientWindowAdapter:windowClosing()

Method notifyNewEntity() does nothing.

Method notifyNewEntity(String entity) in the nl.tudelft.bw4t.server.BW4TServer does noting. Method is called in BW4TEnvironment.

Comments what it should do are pressend, but method is empty.

Update controllers with new percept (GUIPercept)

nl.tudelft.bw4t.client.environment.PerceptsHandler

In method getGUIPercepts(), before returning the controllers should be updated.
(was a FIXME comment )

BW4T Client exit-routine required, none yet implemented.

Currently there is no implementation of an exit-routine for the BW4T-Client. Right now the BW4T Client will not remove the agents from the server's view when exiting.

❗ How to reproduce the bug:

1. Start an agent in the BW4T Client.
2. Close the window.
3. Observe that the agent is still visible in the server's view.

✅ What should be implemented?

• The Agent assigned to the specific window should be released from the server.
• The Agent and its corresponding Entity should be deleted from the server.
• The window should be disposed.
• A check should be done to see if there are any client windows left, if not:
  • Close the log file.
  • Terminate the process.

Client: Centralise the Exit Method

At the moment the System.exit() calls are spread throughout the system. A central function should be implemented that is used to stop the client, for instance Launcher.shutdown().

System.exit found in:
nl.tudelft.bw4t.client.environment.BW4TEnvironmentListener:handleStateChange()
nl.tudelft.bw4t.client.environment.RemoteEnvironment:init()

Server crashes after several client initiated restarts.

Using a snapshot of 3.8.2 in which the client initiated restart should have been fixed the environment randomly freezes after one or more restarts. This can happen after only a dozen or after a few hundred.

Restarting the client environment leads me to believe this is a bug in the server section as nothing happens. As well as ten second or so delays in trying to manually change the map. After this everything is functional again.

GUI command line option causes client to crash when turned off.

Using the latest java versions the following command causes the client to crash on environment initialisation.
java -jar bw4t-server-3.8.6.jar -gui false
This results in the following server output:
982 [main] INFO nl.tudelft.bw4t.server.environment.BW4TEnvironment - Launching the BW4T Server without a graphical user interface. 11015 [RMI TCP Connection(4)-192.168.200.192] INFO nl.tudelft.bw4t.server.environment.BW4TEnvironment - Environment now in state: INITIALIZING 11016 [RMI TCP Connection(4)-192.168.200.192] INFO nl.tudelft.bw4t.server.environment.BW4TEnvironment - Taking down the simulation environment 11016 [RMI TCP Connection(4)-192.168.200.192] INFO nl.tudelft.bw4t.server.environment.BW4TEnvironment - Environment now in state: KILLED 11017 [RMI TCP Connection(4)-192.168.200.192] DEBUG nl.tudelft.bw4t.server.environment.BW4TEnvironment - Removing all entities 11017 [RMI TCP Connection(4)-192.168.200.192] DEBUG nl.tudelft.bw4t.server.environment.BW4TEnvironment - Remove all (remaining) agents 11018 [RMI TCP Connection(4)-192.168.200.192] INFO nl.tudelft.bw4t.server.environment.Stepper - Stepper is running... waiting for requests.

I am using goal to interface with the client which results in the following error on the client side:
goal.tools.errorhandling.exceptions.GOALRunFailedException: could not perform run of 'D:\Eclipse Workspace\bw4t\agents\block_com_team.mas2g'. at goal.tools.AbstractRun.run(AbstractRun.java:237) at goal.tools.eclipse.RunTool.main(RunTool.java:67) Caused by: goal.tools.errorhandling.exceptions.GOALLaunchFailureException: EIS failed to start the environment. at goal.core.runtime.RuntimeManager.<init>(RuntimeManager.java:378) at goal.tools.AbstractRun.buildRuntime(AbstractRun.java:317) at goal.tools.AbstractRun.run(AbstractRun.java:219) ... 1 more Caused by: eis.exceptions.ManagementException: failed to initialize the environment. at goal.core.runtime.service.environment.LocalMessagingEnvironment.initialize(LocalMessagingEnvironment.java:590) at goal.core.runtime.service.environment.EnvironmentService.start(EnvironmentService.java:221) at goal.core.runtime.RuntimeManager.<init>(RuntimeManager.java:374) ... 3 more Caused by: java.lang.NullPointerException at nl.tudelft.bw4t.server.environment.BW4TEnvironment.takeDownSimulation(BW4TEnvironment.java:620) at nl.tudelft.bw4t.server.environment.BW4TEnvironment.reset(BW4TEnvironment.java:595) at nl.tudelft.bw4t.server.environment.BW4TEnvironment.init(BW4TEnvironment.java:253) at nl.tudelft.bw4t.server.BW4TServer.requestInit(BW4TServer.java:428) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at sun.rmi.server.UnicastServerRef.dispatch(Unknown Source) at sun.rmi.transport.Transport$1.run(Unknown Source) at sun.rmi.transport.Transport$1.run(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.Transport.serviceCall(Unknown Source) at sun.rmi.transport.tcp.TCPTransport.handleMessages(Unknown Source) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(Unknown Source) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(Unknown Source) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(Unknown Source) at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) at java.lang.Thread.run(Unknown Source) at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(Unknown Source) at sun.rmi.transport.StreamRemoteCall.executeCall(Unknown Source) at sun.rmi.server.UnicastRef.invoke(Unknown Source) at java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(Unknown Source) at java.rmi.server.RemoteObjectInvocationHandler.invoke(Unknown Source) at com.sun.proxy.$Proxy1.requestInit(Unknown Source) at nl.tudelft.bw4t.client.BW4TClient.initServer(BW4TClient.java:549) at nl.tudelft.bw4t.client.environment.RemoteEnvironment.sendServerParams(RemoteEnvironment.java:139) at nl.tudelft.bw4t.client.environment.RemoteEnvironment.init(RemoteEnvironment.java:103) at goal.core.runtime.service.environment.LocalMessagingEnvironment.initialize(LocalMessagingEnvironment.java:586) ... 5 more

After changing the gui option to true everything works fine with the same commands.

Client: handleStateChange does not handle state change

nl.tudelft.bw4t.client.environment.BW4TEnvironmentListener

Only does something when newState is EnvironmentState.KILLED; namely System.exit(0);
This is not something you should want.

Server - BoundedMoveableObject, ugly NullPointer fix

In getLocation method:
if (location == null) {
return new NdPoint(0, 0);
}
Is an ugly fix for NullPointerException when adding entity after the display was setup.

Client: Human Gui battery and messages

When running a human agent through goal the agent does not update the battery status in the gui nor does it show messages sent or received.

update EIS requirement

GOAL core now hard uses EIS0.4 and checks this.

BW4T asks for 0.3 and thus can't run on the current GOAL. we need to fix this.

Empty Method handleFreeEntity

Is not implemented, can be found in nl.tudelft.bw4t.environment.BW4TEnvironmentListener

Scenario Editor: ActionHandler complexity

The function needs to be refactored to be easier to read.
nl.tudelft.bw4t.scenariogui.editor.controller.MenuOptionExport:actionPerformed
nl.tudelft.bw4t.scenariogui.editor.controller.MenuOptionOpen:actionPerformed
nl.tudelft.bw4t.scenariogui.editor.controller.ScenarioEditorController:ScenarioEditorController()

Client/Server: Common start

Add functionality to the client that allows us to start up a server from the client, this way we would have 2 versions of the client, one with the server built in and one without the server. It would make it a lot easier for students working on the MAS project to use the system.

server model NullPointerException

I sometimes get these

Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException
    at nl.tudelft.bw4t.server.model.robots.AbstractRobot.getView(AbstractRobot.java:653)
    at nl.tudelft.bw4t.server.controller.ServerMapController.getVisibleEntities(ServerMapController.java:107)
    at nl.tudelft.bw4t.map.renderer.MapRenderer.drawEntity(MapRenderer.java:304)
    at nl.tudelft.bw4t.map.renderer.MapRenderer.paintComponent(MapRenderer.java:101)
    at javax.swing.JComponent.paint(JComponent.java:1054)
    at javax.swing.JComponent.paintToOffscreen(JComponent.java:5219)
    at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(RepaintManager.java:1529)
    at javax.swing.RepaintManager$PaintManager.paint(RepaintManager.java:1452)
    at javax.swing.RepaintManager.paint(RepaintManager.java:1249)
    at javax.swing.JComponent._paintImmediately(JComponent.java:5167)
    at javax.swing.JComponent.paintImmediately(JComponent.java:4978)
    at javax.swing.RepaintManager$3.run(RepaintManager.java:808)
    at javax.swing.RepaintManager$3.run(RepaintManager.java:796)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:796)
    at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:769)
    at javax.swing.RepaintManager.prePaintDirtyRegions(RepaintManager.java:718)
    at javax.swing.RepaintManager.access$1100(RepaintManager.java:62)
    at javax.swing.RepaintManager$ProcessingRunnable.run(RepaintManager.java:1677)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:312)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:733)
    at java.awt.EventQueue.access$200(EventQueue.java:103)
    at java.awt.EventQueue$3.run(EventQueue.java:694)
    at java.awt.EventQueue$3.run(EventQueue.java:692)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:703)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

BW4T3 reset IllegalStateException

When I try to kill the BW4T3 human environment from GOAL I get these exceptions. From the stacktrace it looks like BW4T3 reset issue.

WARNING: Exception caught while killing MAS 
java.lang.IllegalStateException: bot is not holding any block
    at nl.tudelft.bw4t.server.model.robots.AbstractRobot.drop(AbstractRobot.java:279)
    at nl.tudelft.bw4t.server.model.robots.handicap.AbstractRobotDecorator.drop(AbstractRobotDecorator.java:92)
    at nl.tudelft.bw4t.server.eis.RobotEntity.reset(RobotEntity.java:139)
    at nl.tudelft.bw4t.server.eis.RobotEntity.disconnect(RobotEntity.java:132)
    at nl.tudelft.bw4t.server.environment.BW4TEnvironment.freePair(BW4TEnvironment.java:683)
    at nl.tudelft.bw4t.server.BW4TServer.freePair(BW4TServer.java:273)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:322)
    at sun.rmi.transport.Transport$1.run(Transport.java:177)
    at sun.rmi.transport.Transport$1.run(Transport.java:174)
    at java.security.AccessController.doPrivileged(Native Method)
    at sun.rmi.transport.Transport.serviceCall(Transport.java:173)
    at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:556)
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:811)
    at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:670)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
    at java.lang.Thread.run(Thread.java:745)
    at sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:275)
    at sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:252)
    at sun.rmi.server.UnicastRef.invoke(UnicastRef.java:161)
    at java.rmi.server.RemoteObjectInvocationHandler.invokeRemoteMethod(RemoteObjectInvocationHandler.java:194)
    at java.rmi.server.RemoteObjectInvocationHandler.invoke(RemoteObjectInvocationHandler.java:148)
    at com.sun.proxy.$Proxy1.freePair(Unknown Source)
    at nl.tudelft.bw4t.client.BW4TClient.freePair(BW4TClient.java:349)
    at nl.tudelft.bw4t.client.environment.RemoteEnvironment.freePair(RemoteEnvironment.java:429)
    at nl.tudelft.bw4t.client.environment.RemoteEnvironment.kill(RemoteEnvironment.java:722)
    at goal.core.runtime.service.environment.LocalMessagingEnvironment.shutDown(LocalMessagingEnvironment.java:562)
    at goal.core.runtime.service.environment.EnvironmentService.shutDown(EnvironmentService.java:350)
    at goal.core.runtime.RuntimeManager.shutDown(RuntimeManager.java:637)
    at goal.tools.LaunchManager.shutDownRuntime(LaunchManager.java:165)
    at nl.tudelft.goal.SimpleIDE.actions.KillAction.killProcessNode(KillAction.java:159)
    at nl.tudelft.goal.SimpleIDE.actions.KillAction.execute(KillAction.java:112)
    at nl.tudelft.goal.SimpleIDE.actions.GOALAction.executeAll(GOALAction.java:207)
    at nl.tudelft.goal.SimpleIDE.actions.GOALAction.actionPerformed(GOALAction.java:163)
    at javax.swing.AbstractButton.fireActionPerformed(AbstractButton.java:2018)
    at javax.swing.AbstractButton$Handler.actionPerformed(AbstractButton.java:2341)
    at javax.swing.DefaultButtonModel.fireActionPerformed(DefaultButtonModel.java:402)
    at javax.swing.DefaultButtonModel.setPressed(DefaultButtonModel.java:259)
    at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(BasicButtonListener.java:252)
    at java.awt.AWTEventMulticaster.mouseReleased(AWTEventMulticaster.java:289)
    at java.awt.Component.processMouseEvent(Component.java:6516)
    at javax.swing.JComponent.processMouseEvent(JComponent.java:3320)
    at java.awt.Component.processEvent(Component.java:6281)
    at java.awt.Container.processEvent(Container.java:2229)
    at java.awt.Component.dispatchEventImpl(Component.java:4872)
    at java.awt.Container.dispatchEventImpl(Container.java:2287)
    at java.awt.Component.dispatchEvent(Component.java:4698)
    at java.awt.LightweightDispatcher.retargetMouseEvent(Container.java:4832)
    at java.awt.LightweightDispatcher.processMouseEvent(Container.java:4492)
    at java.awt.LightweightDispatcher.dispatchEvent(Container.java:4422)
    at java.awt.Container.dispatchEventImpl(Container.java:2273)
    at java.awt.Window.dispatchEventImpl(Window.java:2719)
    at java.awt.Component.dispatchEvent(Component.java:4698)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:735)
    at java.awt.EventQueue.access$200(EventQueue.java:103)
    at java.awt.EventQueue$3.run(EventQueue.java:694)
    at java.awt.EventQueue$3.run(EventQueue.java:692)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
    at java.awt.EventQueue$4.run(EventQueue.java:708)
    at java.awt.EventQueue$4.run(EventQueue.java:706)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:705)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

eclipse git cloning problem

if I clone the workspace using git in Eclipse (paste url https://github.com/eishub/bw4t in git area of Eclipse; next; select 'develop', next) I am getting

{{{
'Cloning from https://github.com/eishub/BW4T' has encountered a problem.

Checkout conflict with files:
bw4t/.project
bw4t/bw4t-client/.project
bw4t/bw4t-core/.project
bw4t/bw4t-environment-store/.project
bw4t/bw4t-integration-test/.project
bw4t/bw4t-scenario-editor/.project
bw4t/bw4t-server/.project
Checkout conflict with files:
bw4t/.project
bw4t/bw4t-client/.project
bw4t/bw4t-core/.project
bw4t/bw4t-environment-store/.project
bw4t/bw4t-integration-test/.project
bw4t/bw4t-scenario-editor/.project
bw4t/bw4t-server/.project
}}}

it works fine if I only select the 'develop' branch.

gatherPercepts() method should be checked

nl.tudelft.bw4t.client.environment.RemoteEnvironment

TODO: Function written by a lunatic, please check this.

Client - RemoteEnvironment: condition checks if String is in Set<AgentListeners>

String is incompatible with expected argument type eis.AgentListener in nl.tudelft.bw4t.client.environment.RemoteEnvironment.detachAgentListener(String, AgentListener)

rule 465: if ((listeners == null) || !listeners.contains(agent)) {

@Override
public void detachAgentListener(String agent, AgentListener listener) {
    if (!localAgents.contains(agent)) {
        return;
    }
    Set<AgentListener> listeners = agentsToAgentListeners.get(agent);
    if ((listeners == null) || !listeners.contains(agent)) {
        return;
    }
    listeners.remove(listener);
}

Client - RemoteEnvironment: Method always returns true

line 253:
/**
* Check whether an action is supported by a type, for now always returns false as it should not be used
*
* @return the result
*/
public boolean isSupportedByType(Action arg0, String arg1) {
return true;
}

line 351:

/**
 * Check if an action is supported by an entity, is not used so returns true
 * 
 * @param action
 *            , the action
 * @param entity
 *            , the entity
 */
public boolean isSupportedByEntity(Action action, String entity) {
    return true;
}

line 264:

/**
 * Check if a certain state transition is valid, always returns true for now.
 * 
 * @param oldState
 *            , the old state of the environment
 * @param newState
 *            , the new state of the environment
 */
@Override
public boolean isStateTransitionValid(EnvironmentState oldState, EnvironmentState newState) {
    return true;
}

stepper NullPointerException

internal error occured while running stepper
java.lang.NullPointerException
at repast.simphony.engine.controller.DefaultController.runCleanup(DefaultController.java:287)
at repast.simphony.engine.controller.DefaultController.runCleanup(DefaultController.java:435)
at nl.tudelft.bw4t.server.BW4TRunner.cleanUpRun(BW4TRunner.java:114)
at nl.tudelft.bw4t.server.Stepper.run(Stepper.java:56)
at java.lang.Thread.run(Unknown Source)

Scenario Editor: ConfigurationPanel:isDefault()

TODO: check if the bot list is empty (since that is default too)

Client/Server: Reconnecting

At the moment the system will not try to reconnect to the server if the connection fails, it should probably be implemented that the connection can be re-estabilshed. This is especially interresting once more clients connect to the same server and some may be on an unstable connection.
At the moment it is only observed, for example, when the computer is put into sleep mode and reactivated. The originally connected robots will remain on the server.

Scenario Editor: EntityPanelTest unfinished tests

add assertions to tests:
nl.tudelft.bw4t.scenariogui.editor.gui.panel.EntityPanelTest

• testModifyBot()
• testModifyEPartner()

Server: Block:getColor()

Can it be refactored to only exist in the visualization?

Bots in the view do not move when attached to goal

the percepts are not sent to the gui... fix it!

Complexity reduction needed in AbstractRobot.java

Complexity in the following functions in AbstractRobot.java should be reduced:

• public synchronized void move()
• public MoveType checkZoneAccess(Zone startzone, Zone endzone, Door door)
• public void drop()

Server: Block Placing

In nl.tudelft.bw4t.server.repast.MapLoader#makeBlocks():
we may want to check if there is enough space at all for the requested number of blocks. If not, we will hang in the next loop. determine all the extra blocks: the extra sequence blocks and more

Server: Robot Battery

Should negative values be allowed for the max charge, discharge and current?