diff --git a/projects/Assignments/homework2/YamashitaDeMouraEntity.java b/projects/Assignments/homework2/YamashitaDeMouraEntity.java
new file mode 100644
index 0000000000000000000000000000000000000000..4ad6f592bbf1e02c349d4e9e8e0478e8cb0f85b1
--- /dev/null
+++ b/projects/Assignments/homework2/YamashitaDeMouraEntity.java
@@ -0,0 +1,99 @@
+
+/**
+ * MV3500
+ *
+ * Entity
+ *
+ * @author Douglas Yamashita de Moura
+ * @version 20180227
+ *
+ */
+public class YamashitaDeMouraEntity {
+
+ private String name;
+ private float x;
+ private float y;
+ private float z;
+ private float speed;
+
+ public YamashitaDeMouraEntity (String name, float x, float y, float z, float speed) {
+ this.name = name;
+ this.x = x;
+ this.y = y;
+ this.z = z;
+ this.speed = speed;
+ }
+
+ /**
+ * @return the x
+ */
+ public float getX() {
+ return x;
+ }
+
+ /**
+ * @param x the x to set
+ */
+ public void setX(float x) {
+ this.x = x;
+ }
+
+ /**
+ * @return the y
+ */
+ public float getY() {
+ return y;
+ }
+
+ /**
+ * @param y the y to set
+ */
+ public void setY(float y) {
+ this.y = y;
+ }
+
+ /**
+ * @return the z
+ */
+ public float getZ() {
+ return z;
+ }
+
+ /**
+ * @param z the z to set
+ */
+ public void setZ(float z) {
+ this.z = z;
+ }
+
+ /**
+ * @return the name
+ */
+ public String getName() {
+ return name;
+ }
+
+ /**
+ * @param name the name to set
+ */
+ public void setName(String name) {
+ this.name = name;
+ }
+
+ /**
+ * @return the velocity
+ */
+ public float getVelocity() {
+ return speed;
+ }
+
+ /**
+ * @param velocity the velocity to set
+ */
+ public void setVelocity(float velocity) {
+ this.speed = velocity;
+ }
+
+
+
+}
diff --git a/projects/Assignments/homework2/YamashitaDeMouraMulticastReceiver.java b/projects/Assignments/homework2/YamashitaDeMouraMulticastReceiver.java
new file mode 100644
index 0000000000000000000000000000000000000000..8cb018ba6f006609a3668ff1a1b524520598f5b9
--- /dev/null
+++ b/projects/Assignments/homework2/YamashitaDeMouraMulticastReceiver.java
@@ -0,0 +1,77 @@
+
+import java.io.*;
+import java.net.*;
+import java.util.Random;
+
+/**
+ * MV3500
+ *
+ * Multicast Receiver
+ *
+ * @author Douglas Yamashita de Moura
+ * @version 20180227
+ *
+ */
+public class YamashitaDeMouraMulticastReceiver {
+
+ public static final String MULTICAST_ADDRESS = "239.1.2.15";
+ public static final int DESTINATION_PORT = 1717;
+ public static final int TTL = 10;
+
+ public static void main(String[] args)
+ {
+ try
+ {
+ System.setProperty("java.net.preferIPv4Stack", "true");
+ MulticastSocket multicastSocket = new MulticastSocket(DESTINATION_PORT);
+ multicastSocket.setTimeToLive(TTL);
+ InetAddress multicastAddress = InetAddress.getByName(MULTICAST_ADDRESS);
+ System.out.println(multicastAddress);
+ multicastSocket.joinGroup(multicastAddress);
+ int count = 0;
+
+ int randomReceiver = new Random().nextInt(100);
+ System.out.println("=== MULTICAST RECEIVER " + randomReceiver + " ===");
+
+ while(true)
+ {
+ byte[] packetArray = new byte[1500];
+ DatagramPacket packet = new DatagramPacket(packetArray, packetArray.length);
+ multicastSocket.receive(packet);
+ count++;
+ ByteArrayInputStream bais = new ByteArrayInputStream(packet.getData());
+ DataInputStream dis = new DataInputStream(bais);
+ char entity = dis.readChar();
+ String name = "";
+ int nameLength = 0;
+ switch(entity) {
+ case 'A':
+ nameLength = 4;
+ name = "A";
+ break;
+ case 'B':
+ nameLength = 4;
+ name = "B";
+ break;
+ }
+
+ // Read name
+ for (int i = 0; i < nameLength; i++) {
+ name += dis.readChar();
+ }
+
+ // Read Position
+ float xPos = dis.readFloat();
+ float yPos = dis.readFloat();
+ float zPos = dis.readFloat();
+ System.out.println("Entity '" + name + "' with position (" + xPos +
+ ", " + yPos + ", " + zPos +").");
+ System.out.println("Number received: " + count);
+ }
+ }
+ catch(Exception e)
+ {
+ System.out.println(e);
+ }
+ }
+}
diff --git a/projects/Assignments/homework2/YamashitaDeMouraMulticastSender.java b/projects/Assignments/homework2/YamashitaDeMouraMulticastSender.java
new file mode 100644
index 0000000000000000000000000000000000000000..725621ddb603e6c7aa43e7e1e328a681897e1dc2
--- /dev/null
+++ b/projects/Assignments/homework2/YamashitaDeMouraMulticastSender.java
@@ -0,0 +1,85 @@
+
+import java.io.*;
+import java.net.*;
+import java.util.Random;
+
+/**
+ * MV3500
+ *
+ * Multicast Sender
+ *
+ * @author Douglas Yamashita de Moura
+ * @version 20180227
+ *
+ */
+public class YamashitaDeMouraMulticastSender {
+
+ public static final String MULTICAST_ADDRESS = "239.1.2.15";
+ public static final int DESTINATION_PORT = 1717;
+ public static final int TTL = 10;
+
+
+ public static void main(String[] args)
+ {
+ YamashitaDeMouraEntity entityA = new YamashitaDeMouraEntity("Alpha", 0, 0, 0, 2);
+ YamashitaDeMouraEntity entityB = new YamashitaDeMouraEntity("Bravo", 0, 0, 0, 3);
+
+ try
+ {
+ System.setProperty("java.net.preferIPv4Stack", "true");
+
+ MulticastSocket multicastSocket = new MulticastSocket(1718);
+ multicastSocket.setTimeToLive(TTL);
+ InetAddress multicastAddress = InetAddress.getByName(MULTICAST_ADDRESS);
+ System.out.println(multicastAddress);
+ multicastSocket.joinGroup(multicastAddress);
+ ByteArrayOutputStream baos = new ByteArrayOutputStream();
+ DataOutputStream dos = new DataOutputStream(baos);
+
+ Random randomProb = new Random();
+
+ System.out.println("=== MULTICAST SENDER ===");
+
+ for(int idx = 1; idx < 100; idx++)
+ {
+ int prob = randomProb.nextInt(5);
+
+ if(prob < 2) {
+ dos.writeChars(entityA.getName());
+ // Move only in x direction
+ float newPos = entityA.getX()+entityA.getVelocity();
+ entityA.setX(newPos);
+ dos.writeFloat(entityA.getX());
+ dos.writeFloat(entityA.getY());
+ dos.writeFloat(entityA.getZ());
+ System.out.println("Entity '" + entityA.getName() +
+ "' with position (" + entityA.getX() + ", " +
+ entityA.getY() + ", " + entityA.getZ() + ")");
+ } else if (prob < 5) {
+ dos.writeChars(entityB.getName());
+ dos.writeFloat(entityB.getX());
+ // Move only in y direction
+ float newPos = entityB.getY()+entityB.getVelocity();
+ entityB.setY(newPos);
+ dos.writeFloat(entityB.getY());
+ dos.writeFloat(entityB.getZ());
+ System.out.println("Entity '" + entityB.getName() +
+ "' with position (" + entityB.getX() + ", " +
+ entityB.getY() + ", " + entityB.getZ() + ")");
+ }
+
+ byte[] buffer = baos.toByteArray();
+
+ DatagramPacket packet = new DatagramPacket(buffer, buffer.length, multicastAddress, DESTINATION_PORT);
+ multicastSocket.send(packet);
+ baos.reset();
+ Thread.sleep(1000); // Send 100, one per second
+ System.out.println("Sent multicast packet " + idx + " of 100");
+ }
+ }
+ catch(Exception e)
+ {
+ System.out.println(e);
+ }
+ }
+}
diff --git a/projects/Assignments/homework2/YamashitaDeMouraOutput.jpg b/projects/Assignments/homework2/YamashitaDeMouraOutput.jpg
new file mode 100644
index 0000000000000000000000000000000000000000..ea97fa9be246b0dadc110583cbd7032f1bac3886
Binary files /dev/null and b/projects/Assignments/homework2/YamashitaDeMouraOutput.jpg differ