In mod loader you have this code:

ModLoader.clientSendPacket(new Packet250CustomPayload("Cars", var7));

 

But what do i use in Minecraft Forge??

Can you show the class in which this line of code is in? That makes it much easier to resolve and help you.

Here's the code I have.  It's not more involved, there's just some error handling.

 

	    	ByteArrayOutputStream bt = new ByteArrayOutputStream();
    	DataOutputStream out = new DataOutputStream(bt);
    	try {
    		out.writeInt(1);
    		out.writeInt(x);
    		out.writeInt(y);
    		out.writeInt(z);
    		Packet250CustomPayload packet = new Packet250CustomPayload("Mosaic", bt.toByteArray());
    		PacketDispatcher.sendPacketToServer(packet);  //the line you're asking about
    	} catch (IOException ex) {
    		System.out.println("couldnt send packet!");
    	}

Thanks!

 

And this is the line of code

    public void sendPacketwithID(byte[] var1)

    {

        ArrayList var2 = new ArrayList();

        int var3 = Integer.valueOf(this.entityId).intValue();

        var2.add(Byte.valueOf((byte)0));

        var2.add(Byte.valueOf((byte)(var3 & 255)));

        var2.add(Byte.valueOf((byte)(var3 >> 8 & 255)));

        var2.add(Byte.valueOf((byte)(var3 >> 16 & 255)));

        var2.add(Byte.valueOf((byte)(var3 >> 24 & 255)));

        byte[] var7 = var1;

        int var8 = var1.length;

 

        for (int var9 = 0; var9 < var8; ++var9)

        {

            byte var10 = var7[var9];

            var2.add(Byte.valueOf(var10));

        }

 

        var7 = new byte[var2.size()];

 

        for (var8 = 0; var8 < var2.size(); ++var8)

        {

            var7[var8] = ((Byte)var2.get(var8)).byteValue();

        }

 

        Packet250CustomPayload packet = new Packet250CustomPayload("Cars", var7);

 

    }