Reduced multithreaded conveyor corruption, improved interpolation

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

@@ -25,7 +25,7 @@ import java.io.IOException;
 import static io.anuke.mindustry.Vars.*;
 
 public class Net{
-	public static final int version = 19;
+	public static final int version = 20;
 
 	private static boolean server;
 	private static boolean active;

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

@@ -508,15 +508,15 @@ public class Packets {
 
         @Override
         public void write(ByteBuffer buffer) {
-            buffer.putInt(position);
-            buffer.put(rotation);
+            buffer.putInt((rotation) | (position << 2));
             buffer.put(itemid);
         }
 
         @Override
         public void read(ByteBuffer buffer) {
-            position = buffer.getInt();
-            rotation = buffer.get();
+            int i = buffer.getInt();
+            rotation = (byte)(i & 0x3);
+            position = i >> 2;
             itemid = buffer.get();
         }
     }