1 files changed, 64 insertions, 0 deletions
diff --git a/src/main/java/gregtech/api/net/GTPacketUpdateItem.java b/src/main/java/gregtech/api/net/GTPacketUpdateItem.java
new file mode 100644
index 0000000000..54846cdcc9
--- /dev/null
+++ b/src/main/java/gregtech/api/net/GTPacketUpdateItem.java
@@ -0,0 +1,64 @@
+package gregtech.api.net;
+
+import net.minecraft.entity.player.EntityPlayerMP;
+import net.minecraft.item.ItemStack;
+import net.minecraft.nbt.NBTTagCompound;
+import net.minecraft.network.INetHandler;
+import net.minecraft.network.NetHandlerPlayServer;
+import net.minecraft.world.IBlockAccess;
+
+import com.google.common.io.ByteArrayDataInput;
+
+import cpw.mods.fml.common.network.ByteBufUtils;
+import gregtech.api.interfaces.INetworkUpdatableItem;
+import gregtech.api.util.ISerializableObject;
+import io.netty.buffer.ByteBuf;
+
+/**
+ * Client -> Server: send arbitrary data to server and update the currently held item.
+ */
+public class GTPacketUpdateItem extends GTPacketNew {
+
+    private NBTTagCompound tag;
+    private EntityPlayerMP mPlayer;
+
+    public GTPacketUpdateItem() {
+        super(true);
+    }
+
+    public GTPacketUpdateItem(NBTTagCompound tag) {
+        super(false);
+        this.tag = tag;
+    }
+
+    @Override
+    public byte getPacketID() {
+        return GTPacketTypes.UPDATE_ITEM.id;
+    }
+
+    @Override
+    public void setINetHandler(INetHandler aHandler) {
+        if (aHandler instanceof NetHandlerPlayServer) {
+            mPlayer = ((NetHandlerPlayServer) aHandler).playerEntity;
+        }
+    }
+
+    @Override
+    public void encode(ByteBuf aOut) {
+        ByteBufUtils.writeTag(aOut, tag);
+    }
+
+    @Override
+    public GTPacketNew decode(ByteArrayDataInput aData) {
+        return new GTPacketUpdateItem(ISerializableObject.readCompoundTagFromGreggyByteBuf(aData));
+    }
+
+    @Override
+    public void process(IBlockAccess aWorld) {
+        if (mPlayer == null) return;
+        ItemStack stack = mPlayer.inventory.getCurrentItem();
+        if (stack != null && stack.getItem() instanceof INetworkUpdatableItem) {
+            ((INetworkUpdatableItem) stack.getItem()).receive(stack, mPlayer, tag);
+        }
+    }
+}