Experimental sync changes

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

@@ -137,4 +137,11 @@ public class NetEvents {
         packet.itemid = (byte)item.id;
         Net.send(packet, SendMode.udp);
     }
+
+    public static void handleItemAdd(Tile tile, Item item){
+        ItemAddPacket packet = new ItemAddPacket();
+        packet.position = tile.packedPosition();
+        packet.itemid = (byte)item.id;
+        Net.send(packet, SendMode.udp);
+    }
 }

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

@@ -522,4 +522,21 @@ public class Packets {
             itemid = buffer.get();
         }
     }
+
+    public static class ItemAddPacket implements Packet{
+        public int position;
+        public byte itemid;
+
+        @Override
+        public void write(ByteBuffer buffer) {
+            buffer.putInt(position);
+            buffer.put(itemid);
+        }
+
+        @Override
+        public void read(ByteBuffer buffer) {
+            position = buffer.getInt();
+            itemid = buffer.get();
+        }
+    }
 }

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

@@ -38,7 +38,8 @@ public class Registrator {
             CustomMapPacket.class,
             MapAckPacket.class,
             EntitySpawnPacket.class,
-            ItemTransferPacket.class
+            ItemTransferPacket.class,
+            ItemAddPacket.class,
     };
     private static ObjectIntMap<Class<?>> ids = new ObjectIntMap<>();