Fixed build errors

core/src/io/anuke/mindustry/net/NetConnection.java

@@ -6,6 +6,13 @@ public abstract class NetConnection {
     public final int id;
     public final String address;
 
+    /**ID of last snapshot this connection is guaranteed to have recieved.*/
+    public int lastSnapshotID;
+    /**Byte array of last sent snapshot data that is confirmed to be recieved..*/
+    public byte[] lastSnapshot;
+    /**Byte array of last sent snapshot.*/
+    public byte[] lastSentSnapshot;
+
     public NetConnection(int id, String address){
         this.id = id;
         this.address = address;

core/src/io/anuke/mindustry/net/NetEvents.java

@@ -1,5 +1,17 @@
 package io.anuke.mindustry.net;
 
+import io.anuke.annotations.Annotations.Remote;
+import io.anuke.mindustry.entities.Player;
+
 public class NetEvents {
 
+    @Remote(one = true, all = false, unreliable = true)
+    public static void onSnapshot(byte[] snapshot, int snapshotID){
+
+    }
+
+    @Remote(unreliable = true, server = false)
+    public static void onRecievedSnapshot(Player player, int snapshotID){
+        Net.getConnection(player.clientid).lastSnapshotID = snapshotID;
+    }
 }

core/src/io/anuke/mindustry/net/Packets.java

@@ -9,7 +9,7 @@ import io.anuke.mindustry.net.Packet.ImportantPacket;
 import io.anuke.mindustry.net.Packet.UnimportantPacket;
 import io.anuke.ucore.io.ByteBufferOutput;
 import io.anuke.ucore.io.IOUtils;
-import io.anuke.ucore.io.delta.ByteBufferInput;
+import io.anuke.ucore.io.ByteBufferInput;
 
 import java.nio.ByteBuffer;