2 files changed, 59 insertions, 0 deletions
diff --git a/src/main/java/gregtech/api/net/GT_Packet.java b/src/main/java/gregtech/api/net/GT_Packet.java
index 4bf435ca0c..48cc171d61 100644
--- a/src/main/java/gregtech/api/net/GT_Packet.java
+++ b/src/main/java/gregtech/api/net/GT_Packet.java
@@ -2,6 +2,7 @@ package gregtech.api.net;
 
 import com.google.common.io.ByteArrayDataInput;
 import io.netty.buffer.ByteBuf;
+import net.minecraft.network.INetHandler;
 import net.minecraft.world.IBlockAccess;
 
 /**
@@ -46,4 +47,9 @@ public abstract class GT_Packet {
      * @param aWorld null if message is received on server side, the client world if message is received on client side
      */
     public abstract void process(IBlockAccess aWorld);
+
+    /**
+     * This will be called just before {@link #process(IBlockAccess)} to inform the handler about the source and type of connection
+     */
+    public void setINetHandler(INetHandler aHandler) {}
 }
diff --git a/src/main/java/gregtech/api/net/GT_Packet_ClientPreference.java b/src/main/java/gregtech/api/net/GT_Packet_ClientPreference.java
new file mode 100644
index 0000000000..a97cfb207b
--- /dev/null
+++ b/src/main/java/gregtech/api/net/GT_Packet_ClientPreference.java
@@ -0,0 +1,53 @@
+package gregtech.api.net;
+
+import com.google.common.io.ByteArrayDataInput;
+import gregtech.GT_Mod;
+import gregtech.api.util.GT_ClientPreference;
+import io.netty.buffer.ByteBuf;
+import net.minecraft.entity.player.EntityPlayerMP;
+import net.minecraft.network.INetHandler;
+import net.minecraft.network.NetHandlerPlayServer;
+import net.minecraft.world.IBlockAccess;
+
+public class GT_Packet_ClientPreference extends GT_Packet_New {
+    private GT_ClientPreference mPreference;
+    private EntityPlayerMP mPlayer;
+
+    public GT_Packet_ClientPreference() {
+        super(true);
+    }
+
+    public GT_Packet_ClientPreference(GT_ClientPreference mPreference) {
+        super(false);
+        this.mPreference = mPreference;
+    }
+
+    @Override
+    public byte getPacketID() {
+        return 9;
+    }
+
+    @Override
+    public void setINetHandler(INetHandler aHandler) {
+        if (aHandler instanceof NetHandlerPlayServer) {
+            mPlayer = ((NetHandlerPlayServer) aHandler).playerEntity;
+        }
+    }
+
+    @Override
+    public void process(IBlockAccess aWorld) {
+        if (mPlayer != null)
+            GT_Mod.gregtechproxy.setClientPreference(mPlayer.getUniqueID(), mPreference);
+    }
+
+    @Override
+    public void encode(ByteBuf aOut) {
+        aOut.writeBoolean(mPreference.isSingleBlockInitialFilterEnabled());
+        aOut.writeBoolean(mPreference.isInputBusInitialFilterEnabled());
+    }
+
+    @Override
+    public GT_Packet_New decode(ByteArrayDataInput aData) {
+        return new GT_Packet_ClientPreference(new GT_ClientPreference(aData.readBoolean(), aData.readBoolean()));
+    }
+}