Added packet handlers, guis, etc required to handle the routing nodes. Added the ability to have a different filter for each direction.

src/main/java/WayofTime/bloodmagic/network/BloodMagicPacketHandler.java

@@ -16,6 +16,7 @@ public class BloodMagicPacketHandler
     public static void init()
     {
         INSTANCE.registerMessage(ChatUtil.PacketNoSpamChat.Handler.class, ChatUtil.PacketNoSpamChat.class, 0, Side.CLIENT);
+        INSTANCE.registerMessage(ItemRouterButtonPacketProcessor.class, ItemRouterButtonPacketProcessor.class, 1, Side.SERVER);
     }
 
     public static void sendToAllAround(IMessage message, TileEntity te, int range)

src/main/java/WayofTime/bloodmagic/network/ItemRouterButtonPacketProcessor.java

@@ -0,0 +1,73 @@
+package WayofTime.bloodmagic.network;
+
+import io.netty.buffer.ByteBuf;
+import net.minecraft.network.PacketBuffer;
+import net.minecraft.tileentity.TileEntity;
+import net.minecraft.util.BlockPos;
+import net.minecraft.world.World;
+import net.minecraftforge.common.DimensionManager;
+import net.minecraftforge.fml.common.network.simpleimpl.IMessage;
+import net.minecraftforge.fml.common.network.simpleimpl.IMessageHandler;
+import net.minecraftforge.fml.common.network.simpleimpl.MessageContext;
+import net.minecraftforge.fml.relauncher.Side;
+import WayofTime.bloodmagic.tile.routing.TileFilteredRoutingNode;
+
+public class ItemRouterButtonPacketProcessor implements IMessage, IMessageHandler<ItemRouterButtonPacketProcessor, IMessage>
+{
+    private int buttonPress;
+    private int dimension;
+    private BlockPos pos;
+
+    public ItemRouterButtonPacketProcessor()
+    {
+
+    }
+
+    public ItemRouterButtonPacketProcessor(int buttonPress, BlockPos pos, World world)
+    {
+        this.buttonPress = buttonPress;
+        this.pos = pos;
+        this.dimension = world.provider.getDimensionId();
+    }
+
+    @Override
+    public void fromBytes(ByteBuf buffer)
+    {
+        PacketBuffer buff = new PacketBuffer(buffer);
+        dimension = buff.readInt();
+        pos = buff.readBlockPos();
+        buttonPress = buff.readInt();
+    }
+
+    @Override
+    public void toBytes(ByteBuf buffer)
+    {
+        PacketBuffer buff = new PacketBuffer(buffer);
+        buff.writeInt(dimension);
+        buff.writeBlockPos(pos);
+        buff.writeInt(buttonPress);
+    }
+
+    @Override
+    public IMessage onMessage(ItemRouterButtonPacketProcessor message, MessageContext ctx)
+    {
+        if (ctx.side == Side.SERVER)
+        {
+            message.onMessageFromClient();
+        }
+        return null;
+    }
+
+    public void onMessageFromClient()
+    {
+        World world = DimensionManager.getWorld(dimension);
+        if (world != null)
+        {
+            TileEntity tile = world.getTileEntity(pos);
+            if (tile instanceof TileFilteredRoutingNode)
+            {
+                ((TileFilteredRoutingNode) tile).swapFilters(buttonPress);
+            }
+        }
+    }
+}