Fix build failure, fix squids velocity

src/main/java/me/libraryaddict/disguise/utilities/packets/packethandlers/PacketHandlerVelocity.java

@@ -28,5 +28,9 @@ public class PacketHandlerVelocity implements IPacketHandler {
         }
 
         packets.clear();
+
+        PacketContainer packet = new PacketContainer(PacketType.Play.Server.ENTITY_VELOCITY);
+        packet.getIntegers().write(0, entity.getEntityId());
+        packets.addPacket(packet);
     }
 }

src/main/java/me/libraryaddict/disguise/utilities/packets/packetlisteners/PacketListenerEntityDestroy.java

@@ -0,0 +1,62 @@
+package me.libraryaddict.disguise.utilities.packets.packetlisteners;
+
+import com.comphenix.protocol.PacketType;
+import com.comphenix.protocol.events.PacketAdapter;
+import com.comphenix.protocol.events.PacketEvent;
+import me.libraryaddict.disguise.DisguiseAPI;
+import me.libraryaddict.disguise.disguisetypes.Disguise;
+import me.libraryaddict.disguise.utilities.DisguiseUtilities;
+import org.bukkit.plugin.Plugin;
+
+import java.util.Arrays;
+
+/**
+ * Created by libraryaddict on 3/05/2020.
+ */
+public class PacketListenerEntityDestroy extends PacketAdapter {
+    public PacketListenerEntityDestroy(Plugin plugin) {
+        super(plugin, PacketType.Play.Server.ENTITY_DESTROY);
+    }
+
+    @Override
+    public void onPacketSending(PacketEvent event) {
+        int[] entityIds = event.getPacket().getIntegerArrays().read(0);
+        int[] newEntityIds = entityIds;
+
+        for (int entityId : entityIds) {
+            if (entityId == DisguiseAPI.getSelfDisguiseId()) {
+                return;
+            }
+
+            Disguise disguise = DisguiseUtilities.getDisguise(event.getPlayer(), entityId);
+
+            if (disguise == null) {
+                continue;
+            }
+
+            int len = disguise.getMultiNameLength();
+
+            if (len == 0) {
+                continue;
+            }
+
+            // If this packet has already been processed
+            if (entityIds.length == newEntityIds.length &&
+                    Arrays.stream(entityIds).anyMatch(id -> id == disguise.getArmorstandIds()[0])) {
+                return;
+            }
+
+            newEntityIds = Arrays.copyOf(entityIds, entityIds.length + len);
+
+            for (int a = 0; a < len; a++) {
+                newEntityIds[newEntityIds.length - (a + 1)] = disguise.getArmorstandIds()[a];
+            }
+        }
+
+        if (entityIds.length == newEntityIds.length) {
+            return;
+        }
+
+        event.getPacket().getIntegerArrays().write(0, newEntityIds);
+    }
+}