Fishing? (protocol question regarding start and stop of item usage)

[Simran-B]

Hi everyone,

there's a popular AFK fish & XP farm design which exploits the game mechanics pretty clever to fully automate fishing.

In short: it uses some redstone, an iron door and a noteblock so that all you need is a mouse down event for the RMB (use item) while aiming at the right spot. Due to the clever design, the durability of the fishing rod is not unnecessarily diminished, but only reels in whatever you caught in the moment you catch it. The catch is collected by a hopper and stuffed into a chest.

This works very nicely in the normal game client with an enchanted fishing rod (especially Mending is required to make it last infinitely). I wrote a little script in AutoIt to send the required mouse down event, because taping down the physical mouse button seemed pretty stupid to me.

Now, I really wonder how this could be ported to MC console client. I went through the protocol description and found Use Entity which seems to be relevant here. There are no begin and end flags however. For entering a mine cart etc., it is a single action, but bows and fishing rods kinda have multiple states.

For instance, the bow charges up in power in three intervals. Because there doesn't seem to be anything in the protocol for that, does it mean this is handled on the client side completely? Wouldn't it allow cheaters to always shoot with maximum power without properly charging the bow (effectively firing more rapidly while dealing maximal damage)?

Coming back to the fishing scenario, I'd like to know if the fish farm design would be completely irrelevant for a console client. Does it only trick the regular game client to automatically catch fish? Or is there a "bite" event coming from the server and another packet that tells you what you caught? I can't imagine that this happens on client side, as it would be really easy to manipulate to catch whatever you want, like a /give command.

So, if there's no way to directly translate the mouse down event to network packets, how else could this be implemented? Is there an easy way to intercept MC traffic to analyze fish farming with the game client? (Couldn't get Wireshark with Npcap and its Loopback Adapter to work for a local MC serve so far)

[ORelio]

Hi,

Sorry about the delay for such a detailed issue. MCC cannot click and interact with entities at the moment, and will probably not soon unless someone very motivated wants to implement all the prerequisites:

• Handle entities
• Handle inventories (#205)
• Handle right click (#171)

The bow seems to be handled in Player digging packet.

So long story short, Yes, this can be implemented in MCC, but it requires much work beforehand.

[ReinforceZwei]

Hello,

Just want to announce that I have figured out how to fish with MCC (including use an item, detect if a fish is caught) Here is a little prove screenshot:

But there are a lots of problems still need to be solved. Such as how to know if the fishing hook was owned by the client player so that we don't react to other player's fishing hook, where the water are located, etc...

[Mhowser]

I know this is Java, but this is how Wurst does it https://github.com/Wurst-Imperium/Wurst7/blob/master/src/main/java/net/wurstclient/hacks/AutoFishHack.java

[ORelio]

Since the AutoFish bot is now implemented, I'll close this issue 😉