Added weapon factory block, refactored recipes

kryonet/src/io/anuke/kryonet/KryoClient.java

@@ -136,6 +136,7 @@ public class KryoClient implements ClientProvider{
         for(Class<?> c : types){
             client.getKryo().register(c);
         }
+        KryoRegistrator.register(client.getKryo());
     }
 
     @Override

kryonet/src/io/anuke/kryonet/KryoRegistrator.java

@@ -0,0 +1,38 @@
+package io.anuke.kryonet;
+
+import com.esotericsoftware.kryo.Kryo;
+import com.esotericsoftware.kryo.Serializer;
+import com.esotericsoftware.kryo.io.Input;
+import com.esotericsoftware.kryo.io.Output;
+import io.anuke.mindustry.resource.Mech;
+import io.anuke.mindustry.resource.Upgrade;
+import io.anuke.mindustry.resource.Weapon;
+
+public class KryoRegistrator {
+
+    public static void register(Kryo kryo){
+        kryo.register(Weapon.class, new Serializer<Weapon>() {
+            @Override
+            public void write(Kryo kryo, Output output, Weapon object) {
+                output.writeByte(object.id);
+            }
+
+            @Override
+            public Weapon read(Kryo kryo, Input input, Class type) {
+                return (Weapon)Upgrade.getByID(input.readByte());
+            }
+        });
+
+        kryo.register(Mech.class, new Serializer<Mech>() {
+            @Override
+            public void write(Kryo kryo, Output output, Mech object) {
+                output.writeByte(object.id);
+            }
+
+            @Override
+            public Mech read(Kryo kryo, Input input, Class type) {
+                return (Mech)Upgrade.getByID(input.readByte());
+            }
+        });
+    }
+}

kryonet/src/io/anuke/kryonet/KryoServer.java

@@ -190,6 +190,7 @@ public class KryoServer implements ServerProvider {
         for(Class<?> c : types){
             server.getKryo().register(c);
         }
+        KryoRegistrator.register(server.getKryo());
     }
 
     @Override