From dabef55e82441bbe279952912e9824333b39952b Mon Sep 17 00:00:00 2001
From: ethanjwilliams <ethanjwilliams@localhost>
Date: Tue, 27 Aug 2024 13:34:19 -0700
Subject: [PATCH] Williams - Homework 3
---
.../Williams/ExampleSimulationProgram.java | 105 ++++--------------
.../homework3/Williams/README.md | 12 +-
2 files changed, 23 insertions(+), 94 deletions(-)
diff --git a/assignments/src/MV3500Cohort2024JulySeptember/homework3/Williams/ExampleSimulationProgram.java b/assignments/src/MV3500Cohort2024JulySeptember/homework3/Williams/ExampleSimulationProgram.java
index a428dd2d01..66628a8cc3 100644
--- a/assignments/src/MV3500Cohort2024JulySeptember/homework3/Williams/ExampleSimulationProgram.java
+++ b/assignments/src/MV3500Cohort2024JulySeptember/homework3/Williams/ExampleSimulationProgram.java
@@ -8,7 +8,6 @@
*/
package MV3500Cohort2024JulySeptember.homework3.Williams;
-
import edu.nps.moves.dis7.entities.swe.platform.surface._001Poseidon;
import edu.nps.moves.dis7.entities.swe.platform.surface._002Triton;
import edu.nps.moves.dis7.enumerations.*;
@@ -25,9 +24,9 @@ import java.util.logging.Logger;
* tasks of interest, and then reporting activity via PDUs to the network.
* Default program initialization includes PDU recording turned on by default.
*
- * Homework 3 Networking choices:
+ * Homework 3 networking choices:
* This simulation uses UDP multicast for efficient distribution of PDUs to
- * multiple participants, which is suitable for large-scale simulations where
+ * multiple participants, which is great for large-scale simulations where
* state updates need to reach all networked participants. UDP is chosen over
* TCP due to its lower latency, which is essential for real-time simulations.
*
@@ -39,65 +38,38 @@ import java.util.logging.Logger;
*/
public class ExampleSimulationProgram
{
- /* **************************** infrastructure code, modification is seldom needed ************************* */
-
private String descriptor = this.getClass().getSimpleName();
- /** DIS channel defined by network address/port combination includes multiple utility capabilities */
protected DisChannel disChannel;
- /** Factory object used to create new PDU instances */
protected PduFactory pduFactory;
- /** seconds per loop for real-time or simulation execution */
- private double simulationTimeStepDuration = 1.0; // seconds TODO encapsulate
- /** initial simulation time in seconds */
+ private double simulationTimeStepDuration = 1.0;
double simulationTimeInitial = 0.0;
- /** current simulation time in seconds */
double simulationTimeSeconds = simulationTimeInitial;
- /** Maximum number of simulation loops */
int MAX_LOOP_COUNT = 4;
String narrativeMessage1 = new String();
String narrativeMessage2 = new String();
String narrativeMessage3 = new String();
- /** EntityID settings for entity 1 */
protected EntityID entityID_1 = new EntityID();
- /** EntityID settings for entity 2 */
protected EntityID entityID_2 = new EntityID();
- /** ESPDU for entity 1 */
protected EntityStatePdu entityStatePdu_1;
- /** ESPDU for entity 2 */
protected EntityStatePdu entityStatePdu_2;
- /** FirePdu for entity 1 first weapon (if any) */
protected FirePdu firePdu_1a;
- /** FirePdu for entity 1 second weapon (if any) */
protected FirePdu firePdu_1b;
- /** MunitionDescriptor for these weapons */
protected MunitionDescriptor munitionDescriptor1;
- /**
- * Constructor to create an instance of this class.
- * Design goal: additional built-in initialization conveniences can go here
- * to keep your efforts focused on the runSimulation() method.
- */
public ExampleSimulationProgram()
{
initialize();
}
- /**
- * Constructor to create an instance of this class.
- * @param newDescriptor describes this program, useful for logging and debugging
- */
+
public ExampleSimulationProgram(String newDescriptor)
{
descriptor = newDescriptor;
initialize();
}
- /**
- * Utility Constructor that allows your example simulation program to override default network address and port
- * @param address network address to use
- * @param port corresponding network port to use
- */
+
public ExampleSimulationProgram(String address, int port)
{
disChannel.setNetworkAddress(address);
@@ -108,9 +80,6 @@ public class ExampleSimulationProgram
initialize();
}
- /** Initialize channel setup for OpenDis7 and report a test PDU
- * @see initializeDisChannel
- * @see initializeSimulationEntities */
private void initialize()
{
initializeDisChannel();
@@ -122,7 +91,6 @@ public class ExampleSimulationProgram
disChannel.sendCommentPdu(simulationTimeSeconds, DisChannel.COMMENTPDU_SIMULATION_TIMESTEP, timeStepMessage);
}
- /** Initialize channel setup for OpenDis7 and report a test PDU */
private void initializeDisChannel()
{
if (disChannel == null)
@@ -143,8 +111,6 @@ public class ExampleSimulationProgram
disChannel.getPduRecorder().setVerbose(true);
}
- /** Initialize simulation entities.
- */
public void initializeSimulationEntities()
{
if (pduFactory == null)
@@ -155,30 +121,31 @@ public class ExampleSimulationProgram
firePdu_1b = pduFactory.makeFirePdu();
munitionDescriptor1 = new MunitionDescriptor();
- // Define participants
- entityID_1.setSiteID(1).setApplicationID(2).setEntityID(3);
+ entityID_1.setSiteID((int)(Math.random() * 100))
+ .setApplicationID((int)(Math.random() * 100))
+ .setEntityID((int)(Math.random() * 100));
disChannel.addEntity(entityID_1);
- entityID_2.setSiteID(1).setApplicationID(2).setEntityID(4);
+ entityID_2.setSiteID((int)(Math.random() * 100))
+ .setApplicationID((int)(Math.random() * 100))
+ .setEntityID((int)(Math.random() * 100));
disChannel.addEntity(entityID_2);
entityStatePdu_1.setEntityID(entityID_1);
entityStatePdu_1.setForceId(ForceID.FRIENDLY);
entityStatePdu_1.setEntityType(new _001Poseidon());
- entityStatePdu_1.setMarking("Entity #53");
+ entityStatePdu_1.setMarking("Ethan's Poseidon #1");
entityStatePdu_2.setEntityID(entityID_2);
entityStatePdu_2.setForceId(ForceID.OPPOSING);
entityStatePdu_2.setEntityType(new _002Triton());
- entityStatePdu_2.setMarking("Entity #2");
+ entityStatePdu_2.setMarking("Ethan's Triton #2");
munitionDescriptor1.setQuantity(1);
firePdu_1a.setDescriptor(munitionDescriptor1).setRange(1000.0f);
+
}
- /**
- * This runSimulationLoops() method is customizable for running new simulations.
- */
@SuppressWarnings("SleepWhileInLoop")
public void runSimulationLoops ()
{
@@ -195,13 +162,14 @@ public class ExampleSimulationProgram
{
simulationLoopCount++;
- entityStatePdu_1.getEntityLocation().setX(entityStatePdu_1.getEntityLocation().getX() + 1.0);
-
+ entityStatePdu_1.getEntityLocation().setX(entityStatePdu_1.getEntityLocation().getX() + (Math.random() * 2));
+
System.out.println ("... My simulation just did something...");
System.out.flush();
- narrativeMessage1 = "MV3500 ExampleSimulationProgram";
- narrativeMessage2 = "runSimulation() loop " + simulationLoopCount;
+ narrativeMessage1 = "Ethan's Custom Simulation Program";
+ narrativeMessage2 = "Loop " + simulationLoopCount + " - MV3500 Custom Version";
+ narrativeMessage3 = "Simulation developed by Ethan Williams";
if (simulationLoopCount > MAX_LOOP_COUNT)
{
@@ -242,14 +210,6 @@ public class ExampleSimulationProgram
}
}
- /**
- * Send EntityState, Fire, Comment PDUs for this loop.
- * @param simTimeSeconds simulation time in seconds
- * @param entityStatePdu the ESPDU to send
- * @param firePdu the FirePDU to send
- * @param commentType enumeration value describing purpose of the narrative comment PDU
- * @param comments String array of narrative comments
- */
public void sendAllPdusForLoopTimestep(double simTimeSeconds,
EntityStatePdu entityStatePdu,
FirePdu firePdu,
@@ -265,10 +225,6 @@ public class ExampleSimulationProgram
disChannel.sendCommentPdu(simTimeSeconds, commentType, comments);
}
- /**
- * Initial execution via main() method: handle args array of command-line initialization (CLI) arguments here
- * @param args command-line parameters: network address and port
- */
protected void handleArguments (String[] args)
{
if (args.length == 2)
@@ -285,47 +241,26 @@ public class ExampleSimulationProgram
}
}
- /**
- * Get simple descriptor for this network interface, used in trace statements
- * @return simple descriptor name
- */
public String getDescriptor() {
return descriptor;
}
- /**
- * Set new simple descriptor for this network interface, used in trace statements
- * @param newDescriptor simple descriptor name for this interface
- */
public void setDescriptor(String newDescriptor) {
if (newDescriptor == null)
newDescriptor = "";
this.descriptor = newDescriptor;
}
- /**
- * parameter accessor method
- * @return the simulationTimeStepDuration in seconds
- */
public double getSimulationTimeStepDuration() {
return simulationTimeStepDuration;
}
- /**
- * parameter accessor method
- * @param timeStepDurationSeconds the simulationTimeStepDuration in seconds to set
- */
public void setSimulationTimeStepDuration(double timeStepDurationSeconds) {
this.simulationTimeStepDuration = timeStepDurationSeconds;
}
- /** Locally instantiable copy of program, can be subclassed. */
protected static ExampleSimulationProgram thisProgram;
- /**
- * Main method is first executed when a program instance is loaded.
- * @param args command-line parameters: network address and port.
- */
public static void main(String[] args)
{
thisProgram = new ExampleSimulationProgram("test constructor");
@@ -342,4 +277,4 @@ public class ExampleSimulationProgram
System.exit(0);
}
-}
\ No newline at end of file
+}
diff --git a/assignments/src/MV3500Cohort2024JulySeptember/homework3/Williams/README.md b/assignments/src/MV3500Cohort2024JulySeptember/homework3/Williams/README.md
index a1c26dac94..e5281d6ca4 100644
--- a/assignments/src/MV3500Cohort2024JulySeptember/homework3/Williams/README.md
+++ b/assignments/src/MV3500Cohort2024JulySeptember/homework3/Williams/README.md
@@ -1,9 +1,3 @@
-For Homework 3, I modified the OpenDIS ExampleSimulationProgram to enhance its functionality
-by experimenting with entity enumeration values and adjusting the network communication setup.
-On the networking side, I configured the program to use UDP multicast for distribution of the PDUs across
-multiple participants in the simulation. I did this to attempt to create the
-low-latency communication needed in large-scale simulations, where UDP's minimal overhead is
-advantageous, and multicast ensures that updates reach all clients at the same time. I also
-enabled verbose logging to facilitate debugging. Additionally, I adjusted
-the simulation loop to increment Entity 1’s position in each iteration, simulating movement, and set
-the loop to run for a maximum of 10 iterations.
\ No newline at end of file
+For Homework 3, I customized the Example Simulation Program by randomizing the entity IDs
+and I also introduced randomized movement patterns for the entities during the simulation loop.
+These changes make the simulation more realistic and ensuring variability in each run.
\ No newline at end of file
--
GitLab