Another legacy DMcG demo for DIS. Entity moves in a square using SRM to

DIS coordinates

examples/DisDemo/build.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<!-- You may freely edit this file. See commented blocks below for -->
+<!-- some examples of how to customize the build. -->
+<!-- (If you delete it and reopen the project it will be recreated.) -->
+<!-- By default, only the Clean and Build commands use this build script. -->
+<!-- Commands such as Run, Debug, and Test only use this build script if -->
+<!-- the Compile on Save feature is turned off for the project. -->
+<!-- You can turn off the Compile on Save (or Deploy on Save) setting -->
+<!-- in the project's Project Properties dialog box.-->
+<project name="DisDemo" default="default" basedir=".">
+    <description>Builds, tests, and runs the project DisDemo.</description>
+    <import file="nbproject/build-impl.xml"/>
+    <!--
+
+    There exist several targets which are by default empty and which can be 
+    used for execution of your tasks. These targets are usually executed 
+    before and after some main targets. They are: 
+
+      -pre-init:                 called before initialization of project properties
+      -post-init:                called after initialization of project properties
+      -pre-compile:              called before javac compilation
+      -post-compile:             called after javac compilation
+      -pre-compile-single:       called before javac compilation of single file
+      -post-compile-single:      called after javac compilation of single file
+      -pre-compile-test:         called before javac compilation of JUnit tests
+      -post-compile-test:        called after javac compilation of JUnit tests
+      -pre-compile-test-single:  called before javac compilation of single JUnit test
+      -post-compile-test-single: called after javac compilation of single JUunit test
+      -pre-jar:                  called before JAR building
+      -post-jar:                 called after JAR building
+      -post-clean:               called after cleaning build products
+
+    (Targets beginning with '-' are not intended to be called on their own.)
+
+    Example of inserting an obfuscator after compilation could look like this:
+
+        <target name="-post-compile">
+            <obfuscate>
+                <fileset dir="${build.classes.dir}"/>
+            </obfuscate>
+        </target>
+
+    For list of available properties check the imported 
+    nbproject/build-impl.xml file. 
+
+
+    Another way to customize the build is by overriding existing main targets.
+    The targets of interest are: 
+
+      -init-macrodef-javac:     defines macro for javac compilation
+      -init-macrodef-junit:     defines macro for junit execution
+      -init-macrodef-debug:     defines macro for class debugging
+      -init-macrodef-java:      defines macro for class execution
+      -do-jar:                  JAR building
+      run:                      execution of project 
+      -javadoc-build:           Javadoc generation
+      test-report:              JUnit report generation
+
+    An example of overriding the target for project execution could look like this:
+
+        <target name="run" depends="DisDemo-impl.jar">
+            <exec dir="bin" executable="launcher.exe">
+                <arg file="${dist.jar}"/>
+            </exec>
+        </target>
+
+    Notice that the overridden target depends on the jar target and not only on 
+    the compile target as the regular run target does. Again, for a list of available 
+    properties which you can use, check the target you are overriding in the
+    nbproject/build-impl.xml file. 
+
+    -->
+</project>

examples/DisDemo/manifest.mf

+Manifest-Version: 1.0
+X-COMMENT: Main-Class will be added automatically by build
+

examples/DisDemo/nbproject/genfiles.properties

+build.xml.data.CRC32=8b7a865d
+build.xml.script.CRC32=c9a6c7e2
+build.xml.stylesheet.CRC32=f85dc8f2@1.95.0.48
+# This file is used by a NetBeans-based IDE to track changes in generated files such as build-impl.xml.
+# Do not edit this file. You may delete it but then the IDE will never regenerate such files for you.
+nbproject/build-impl.xml.data.CRC32=8b7a865d
+nbproject/build-impl.xml.script.CRC32=e64b9551
+nbproject/build-impl.xml.stylesheet.CRC32=f89f7d21@1.95.0.48

examples/DisDemo/nbproject/project.properties

+annotation.processing.enabled=true
+annotation.processing.enabled.in.editor=true
+annotation.processing.processors.list=
+annotation.processing.run.all.processors=true
+annotation.processing.source.output=${build.generated.sources.dir}/ap-source-output
+application.title=DisDemo
+application.vendor=mcgredo
+build.classes.dir=${build.dir}/classes
+build.classes.excludes=**/*.java,**/*.form
+# This directory is removed when the project is cleaned:
+build.dir=build
+build.generated.dir=${build.dir}/generated
+build.generated.sources.dir=${build.dir}/generated-sources
+# Only compile against the classpath explicitly listed here:
+build.sysclasspath=ignore
+build.test.classes.dir=${build.dir}/test/classes
+build.test.results.dir=${build.dir}/test/results
+# Uncomment to specify the preferred debugger connection transport:
+#debug.transport=dt_socket
+debug.classpath=\
+    ${run.classpath}
+debug.modulepath=\
+    ${run.modulepath}
+debug.test.classpath=\
+    ${run.test.classpath}
+debug.test.modulepath=\
+    ${run.test.modulepath}
+# Files in build.classes.dir which should be excluded from distribution jar
+dist.archive.excludes=
+# This directory is removed when the project is cleaned:
+dist.dir=dist
+dist.jar=${dist.dir}/DisDemo.jar
+dist.javadoc.dir=${dist.dir}/javadoc
+endorsed.classpath=
+excludes=
+file.reference.open-dis7-enumerations-classes.jar=lib/open-dis7-enumerations-classes.jar
+file.reference.open-dis7-pdus-classes.jar=lib/open-dis7-pdus-classes.jar
+file.reference.srm-4.4.0.jar=lib/srm-4.4.0.jar
+includes=**
+jar.compress=false
+javac.classpath=\
+    ${file.reference.open-dis7-enumerations-classes.jar}:\
+    ${file.reference.open-dis7-pdus-classes.jar}
+# Space-separated list of extra javac options
+javac.compilerargs=-Xlint:unchecked
+javac.deprecation=true
+javac.external.vm=false
+javac.modulepath=
+javac.processormodulepath=
+javac.processorpath=\
+    ${javac.classpath}
+javac.source=11
+javac.target=11
+javac.test.classpath=\
+    ${javac.classpath}:\
+    ${build.classes.dir}
+javac.test.modulepath=\
+    ${javac.modulepath}
+javac.test.processorpath=\
+    ${javac.test.classpath}
+javadoc.additionalparam=
+javadoc.author=true
+javadoc.encoding=${source.encoding}
+javadoc.html5=false
+javadoc.noindex=false
+javadoc.nonavbar=false
+javadoc.notree=false
+javadoc.private=false
+javadoc.splitindex=true
+javadoc.use=true
+javadoc.version=false
+javadoc.windowtitle=DIS Square Box Demo
+jlink.launcher=false
+jlink.launcher.name=DisDemo
+main.class=disdemo.DisDemo
+manifest.file=manifest.mf
+meta.inf.dir=${src.dir}/META-INF
+mkdist.disabled=false
+platform.active=default_platform
+project.license=MOVES
+run.classpath=\
+    ${javac.classpath}:\
+    ${build.classes.dir}:\
+    ${file.reference.srm-4.4.0.jar}
+# Space-separated list of JVM arguments used when running the project.
+# You may also define separate properties like run-sys-prop.name=value instead of -Dname=value.
+# To set system properties for unit tests define test-sys-prop.name=value:
+run.jvmargs=
+run.modulepath=\
+    ${javac.modulepath}
+run.test.classpath=\
+    ${javac.test.classpath}:\
+    ${build.test.classes.dir}
+run.test.modulepath=\
+    ${javac.test.modulepath}
+source.encoding=UTF-8
+src.dir=src
+test.src.dir=test

examples/DisDemo/nbproject/project.xml

+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://www.netbeans.org/ns/project/1">
+    <type>org.netbeans.modules.java.j2seproject</type>
+    <configuration>
+        <data xmlns="http://www.netbeans.org/ns/j2se-project/3">
+            <name>DisDemo</name>
+            <source-roots>
+                <root id="src.dir"/>
+            </source-roots>
+            <test-roots>
+                <root id="test.src.dir"/>
+            </test-roots>
+        </data>
+    </configuration>
+</project>

examples/DisDemo/src/disdemo/DisDemo.java

+package disdemo;
+
+import edu.nps.moves.dis7.enumerations.Country;
+import edu.nps.moves.dis7.enumerations.EntityKind;
+import edu.nps.moves.dis7.enumerations.ForceID;
+import edu.nps.moves.dis7.enumerations.PlatformDomain;
+import edu.nps.moves.dis7.pdus.DisTime;
+import edu.nps.moves.dis7.pdus.Domain;
+import edu.nps.moves.dis7.pdus.EntityStatePdu;
+import edu.nps.moves.dis7.pdus.Vector3Double;
+import edu.nps.moves.spatial.*;
+
+import java.io.IOException;
+import java.net.*;
+import java.nio.ByteBuffer;
+import java.util.*;
+
+/**
+ *
+ * @author DMcG
+ */
+public class DisDemo {
+
+    /**
+     * @param args the command line arguments
+     * @throws java.lang.Exception
+     */
+    public static void main(String[] args) throws Exception 
+    {
+        EntityStatePdu espdu = new EntityStatePdu();
+        
+        // Create a new coordinate system at the give latitude, longitude, and altitude
+        RangeCoordinates rangeCoordinates = new RangeCoordinates(31.435, 45.223, 17.0);
+        
+        // Convert from the coodinate system with the origin above to DIS coordinates
+        Vector3Double disCoordinates = rangeCoordinates.DISCoordFromLocalFlat(0, 0, 0);
+        espdu.setEntityLocation(disCoordinates);
+        
+        // Set various fields--entityID, entity type, etc.
+        espdu.setExerciseID((byte)1);
+        
+        espdu.getEntityID().setSiteID(17);
+        espdu.getEntityID().setApplicationID(42);
+        espdu.getEntityID().setEntityID(104);
+        
+        espdu.getEntityType().setEntityKind(EntityKind.PLATFORM); // platform
+        espdu.getEntityType().setDomain(Domain.inst(PlatformDomain.LAND)); // land
+        espdu.getEntityType().setCategory((short)2);
+        espdu.getEntityType().setSubCategory(1);
+        espdu.getEntityType().setSpecific((short)1);
+        espdu.getEntityType().setCountry(Country.UNITED_STATES_OF_AMERICA_USA);
+        
+        espdu.getMarking().setCharacters("lulz".getBytes());
+        espdu.setForceId(ForceID.FRIENDLY);
+        
+        try (DatagramSocket socket = new DatagramSocket(3001))
+        {
+           
+           // We set the starting position to (0,0,0) in the local coordinate
+           // system, which is equivalent to the (lat, lon, alt) set above as
+           // the origin, which also corresponds to some DIS geocentric point.
+           // All three coordinate system points correspond to the same point
+           // in space.
+           Vector3Double startPosition = new Vector3Double();
+           startPosition.setX(0.0);
+           startPosition.setY(0.0);
+           startPosition.setZ(0.0);
+           
+           // Our mover is told to start at (0,0,0) in the local coordinate system
+           EntityMoverSquare mover = new EntityMoverSquare(startPosition);
+           
+           List<InetAddress> allBcasts = getBroadcastAddresses();
+           Vector3Double currentPosition, currentPositionDisCoords;
+           ByteBuffer buffer;
+           DatagramPacket packet;
+               
+           // Do some movement for a while
+           for(int idx = 0; idx < 500; idx++)
+           {
+               mover.step();
+               
+               // get the current position of the enity in the local coordinate system
+               currentPosition = mover.getPosition();
+               
+               // Convert that point to the DIS geocentric coordinate system
+               currentPositionDisCoords = rangeCoordinates.DISCoordFromLocalFlat(currentPosition.getX(), currentPosition.getY(), currentPosition.getZ());
+               
+               // Set entity position in the espdu
+               espdu.setEntityLocation(currentPositionDisCoords);
+               
+               // Marshall it, send it
+               espdu.setTimestamp(new DisTime().getDisRelativeTimestamp());
+               buffer = ByteBuffer.wrap(espdu.marshal());
+               
+               for(InetAddress aBcast: allBcasts)
+               {
+                packet = new DatagramPacket(buffer.array(), buffer.array().length, aBcast, 3000);
+                socket.send(packet);
+               }
+              
+               Thread.sleep(1000);
+               System.out.println("sent " + idx);
+           }
+        }
+        catch(IOException | InterruptedException e)
+        {
+            System.err.println(e);
+        }
+        
+    }
+    
+    public static List<InetAddress> getBroadcastAddresses()
+    {
+        List<InetAddress> broadcastAddresses = new ArrayList<>();
+
+        try
+        {
+            Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
+            while (interfaces.hasMoreElements()) 
+            {
+                NetworkInterface networkInterface = interfaces.nextElement();
+                if (networkInterface.isLoopback())
+                    continue;    // Don't want to broadcast to the loopback interface
+
+                for (InterfaceAddress interfaceAddress : networkInterface.getInterfaceAddresses()) 
+                {
+                    InetAddress broadcast = interfaceAddress.getBroadcast();
+                    if (broadcast == null)
+                        continue;
+
+                    // Use the address
+                    broadcastAddresses.add(broadcast);
+                }
+            }
+        }
+        catch(SocketException e)
+        {
+            System.err.println(e);
+        }
+
+        return broadcastAddresses;
+    }
+    
+}

examples/DisDemo/src/disdemo/EntityMover.java

+package disdemo;
+
+import edu.nps.moves.dis7.pdus.*;
+
+/**
+ * Abstract superclass for moving entities. Initialized with a starting
+ * position (IN LOCAL COORDINATES). Step() performs one quanta of moving
+ * the thing around. After movement you can retrieve the new position with
+ * getPosition(), convert it to global DIS coordinates, and be on your way.
+ * 
+ * @author DMcG
+ */
+public abstract class EntityMover 
+{
+    Vector3Double position;
+    
+    public EntityMover(Vector3Double startPosition)
+    {
+        this.position = startPosition;
+    }
+    
+    public abstract void step();
+    
+    public Vector3Double getPosition()
+    {
+        return position;
+    }
+    
+}

examples/DisDemo/src/disdemo/EntityMoverSquare.java

+package disdemo;
+
+import edu.nps.moves.dis7.pdus.*;
+
+/**
+ * Logic for moving something around in a square using a local coordinate system,
+ * ENU. East is positive X, north is positive Y, positive Z is "up". 
+ * 
+ * @author DMcG
+ */
+public class EntityMoverSquare extends EntityMover
+{
+    /** How much an entity moves every quanta */
+    public static final int STEP_SIZE = 1;
+    /** How big the square we move around is */
+    public static final int SQUARE_SIZE = 50;  // size of a side to the square, in meters
+    /** Directions we can travel. */
+    public enum Direction{NORTH, EAST, SOUTH, WEST};
+    
+    public Direction currentDirection;
+    
+    public EntityMoverSquare(Vector3Double position)
+    {
+        super(position);
+        this.currentDirection = Direction.NORTH;
+    }
+    
+    @Override
+    public void step()
+    {
+        switch(currentDirection)
+        {
+            case NORTH:
+                position.setY( position.getY() + STEP_SIZE);
+                if(position.getY() >= SQUARE_SIZE)
+                {
+                    currentDirection = Direction.EAST;
+                }
+                break;
+                
+            case EAST:
+                position.setX( position.getX() + STEP_SIZE);
+                if(position.getX() >= SQUARE_SIZE)
+                {
+                    currentDirection = Direction.SOUTH;
+                }
+                break;
+                
+            case SOUTH: 
+                position.setY( position.getY() - STEP_SIZE);
+                if(position.getY() <= 0.0)
+                {
+                    currentDirection = Direction.WEST;
+                }
+                break;
+                
+                
+            case WEST:
+                
+                position.setX( position.getX() - STEP_SIZE);
+                if(position.getX() <= 0.0)
+                {
+                    currentDirection = Direction.NORTH;
+                }
+                break;
+                
+            default:
+                System.out.println("Unrecognized direction");
+        }
+        
+        System.out.println("Current position: " + position.getX() + ", " + position.getY() + ", " + position.getZ());
+        
+    }
+
+}