Pumpkin/pumpkin-protocol/README.md
2024-08-02 11:09:33 +02:00

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### Pumpkin Protocol
Contains all Serverbound(Client->Server) and Clientbound(Server->Client) Packets.
Packets in the Pumpkin protocol are organized by functionality and state.
`server`: Contains definitions for serverbound packets.
`client`: Contains definitions for clientbound packets.
### States:
**Handshake**: Always the first packet being send from the Client. This begins also determins the next state, usally to indicate if the player thans perform a Status Request, Join the Server or wants to be transfered.
**Status**: Indicates the Client wants to see a Status response (MOTD).
**Login**: The Login sequence. Indicates the Client wants to join to the Server
**Config**: A sequence of Configuration packets beining mostly send from the Server to the Client. (Features, Resource Pack, Server Links...)
**Play**: The final state which indicate the Player is now ready to Join in also used to handle all other Gameplay packets.
### How to add a Packet ?
You can find all Minecraft Java packets at https://wiki.vg/Protocol. There you also can see in which [State](State) they are.
You also can see all the information the Packets has which we can either Write or Read depending if its Serverbound or Clientbound
#### Adding a Serverbound Packet
Serverbound Packets do use the trait `ServerPacket` which has an packet id (use hex) and can read incoming Client packets.
https://wiki.vg/Protocol gives you the Packet structure which you can than read. Feel free to orientate on already existing Packets.
Please use a name structure like `SPacketName` for the struct, The 'S' representing its Serverbound.
Registering: Don't forget to register the Packet. All Packets before the Player is created so before the Play state. Are using the `ClientPacketProcessor` which calls the packet at `Client::handle_packet` (both in the pumpkin crate)
#### Adding a Clientbound Packet
Clientbound Packets do use the trait `ClientPacket` which has an packet id (use hex) and can write outgoining Server packets.
https://wiki.vg/Protocol gives you the Packet structure which you can than write. Feel free to orientate on already existing Packets.
Please use a name structure like `CPacketName` for the struct, The 'C' representing its Clientbound.
You don't need to register the Packet anywhere, You should just be able now to send it via `Client::send_packet` this will get a result. You should kick the client when an important Packet could't been send. Otherwise
just log an warn.