Swarm (#36)

* make azalea-pathfinder dir

* start writing d* lite impl

* more work on d* lite

* work more on implementing d* lite

* full d* lite impl

* updated edges

* add next() function

* add NoPathError

* why does dstar lite not work

* fix d* lite implementation

* make the test actually check the coords

* replace while loop with if statement

* fix clippy complaints

* make W only have to be PartialOrd

* fix PartialOrd issues

* implement mtd* lite

* add a test to mtd* lite

* remove normal d* lite

* make heuristic only take in one arg

* add `success` function

* Update README.md

* evil black magic to make .entity not need dimension

* start adding moves

* slightly improve the vec3/position situation

new macro that implements all the useful functions

* moves stuff

* make it compile

* update deps in az-pathfinder

* make it compile again

* more pathfinding stuff

* add Bot::look_at

* replace EntityMut and EntityRef with just Entity

* block pos pathfinding stuff

* rename movedirection to walkdirection

* execute path every tick

* advance path

* change az-pf version

* make azalea_client keep plugin state

* fix Plugins::get

* why does it think there is air

* start debugging incorrect air

* update some From methods to use rem_euclid

* start adding swarm

* fix deadlock

i still don't understand why it was happening but the solution was to keep the Client::player lock for shorter so it didn't overlap with the Client::dimension lock

* make lookat actually work probably

* fix going too fast

* Update main.rs

* make a thing immutable

* direction_looking_at

* fix rotations

* import swarm in an example

* fix stuff from merge

* remove azalea_pathfinder import

* delete azalea-pathfinder crate

already in azalea::pathfinder module

* swarms

* start working on shared dimensions

* Shared worlds work

* start adding Swarm::add_account

* add_account works

* change "client" to "bot" in some places

* Fix issues from merge

* Update world.rs

* add SwarmEvent::Disconnect(Account)

* almost add SwarmEvent::Chat and new plugin system

it panics rn

* make plugins have to provide the State associated type

* improve comments

* make fn build slightly cleaner

* fix SwarmEvent::Chat

* change a println in bot/main.rs

* Client::shutdown -> disconnect

* polish

fix clippy warnings + improve some docs a bit

* fix shared worlds*

*there's a bug that entities and bots will have their positions exaggerated because the relative movement packet is applied for every entity once per bot

* i am being trolled by rust

for some reason some stuff is really slow for literally no reason and it makes no sense i am going insane

* make world an RwLock again

* remove debug messages

* fix skipping event ticks

unfortunately now sending events is `.send().await?` instead of just `.send()`

* fix deadlock + warnings

* turns out my floor_mod impl was wrong

and i32::rem_euclid has the correct behavior LOL

* still errors with lots of bots

* make swarm iter & fix new chunks not loading

* improve docs

* start fixing tests

* fix all the tests

except the examples i don't know how to exclude them from the tests

* improve docs some more

1 files changed, 8 insertions, 141 deletions

diff --git a/azalea/src/lib.rs b/azalea/src/lib.rs
index 89754409..7c9c660b 100755..100644
--- a/azalea/src/lib.rs
+++ b/azalea/src/lib.rs
@@ -75,152 +75,19 @@
 //!
 //! [`azalea_client`]: https://crates.io/crates/azalea-client
 
+#![feature(trait_upcasting)]
+#![feature(async_closure)]
+#![allow(incomplete_features)]
+
 mod bot;
 pub mod pathfinder;
 pub mod prelude;
+mod start;
+mod swarm;
 
 pub use azalea_client::*;
 pub use azalea_core::{BlockPos, Vec3};
-use azalea_protocol::ServerAddress;
-use std::{future::Future, sync::Arc};
-use thiserror::Error;
+pub use start::{start, Options};
+pub use swarm::*;
 
 pub type HandleFn<Fut, S> = fn(Client, Event, S) -> Fut;
-
-/// The options that are passed to [`azalea::start`].
-///
-/// [`azalea::start`]: fn.start.html
-pub struct Options<S, A, Fut>
-where
-    A: TryInto<ServerAddress>,
-    Fut: Future<Output = Result<(), anyhow::Error>>,
-{
-    /// The address of the server that we're connecting to. This can be a
-    /// `&str`, [`ServerAddress`], or anything that implements
-    /// `TryInto<ServerAddress>`.
-    ///
-    /// [`ServerAddress`]: azalea_protocol::ServerAddress
-    pub address: A,
-    /// The account that's going to join the server.
-    pub account: Account,
-    /// The plugins that are going to be used. Plugins are external crates that
-    /// add extra functionality to Azalea. You should use the [`plugins`] macro
-    /// for this field.
-    ///
-    /// ```rust,no_run
-    /// plugins![azalea_pathfinder::Plugin::default()]
-    /// ```
-    pub plugins: Plugins,
-    /// A struct that contains the data that you want your bot to remember
-    /// across events.
-    ///
-    /// # Examples
-    ///
-    /// ```rust
-    /// use parking_lot::Mutex;
-    /// use std::sync::Arc;
-    ///
-    /// #[derive(Default, Clone)]
-    /// struct State {
-    ///     farming: Arc<Mutex<bool>>,
-    /// }
-    /// ```
-    pub state: S,
-    /// The function that's called whenever we get an event.
-    ///
-    /// # Examples
-    ///
-    /// ```rust
-    /// use azalea::prelude::*;
-    ///
-    /// async fn handle(bot: Client, event: Event, state: State) -> anyhow::Result<()> {
-    ///     Ok(())
-    /// }
-    /// ```
-    pub handle: HandleFn<Fut, S>,
-}
-
-#[derive(Error, Debug)]
-pub enum Error {
-    #[error("Invalid address")]
-    InvalidAddress,
-    #[error("Join error: {0}")]
-    Join(#[from] azalea_client::JoinError),
-}
-
-/// Join a server and start handling events. This function will run forever until
-/// it gets disconnected from the server.
-///
-/// # Examples
-///
-/// ```rust,no_run
-/// let error = azalea::start(azalea::Options {
-///     account,
-///     address: "localhost",
-///     state: State::default(),
-///     plugins: plugins![azalea_pathfinder::Plugin::default()],
-///     handle,
-/// }).await;
-/// ```
-pub async fn start<
-    S: Send + Sync + Clone + 'static,
-    A: Send + TryInto<ServerAddress>,
-    Fut: Future<Output = Result<(), anyhow::Error>> + Send + 'static,
->(
-    options: Options<S, A, Fut>,
-) -> Result<(), Error> {
-    let address = match options.address.try_into() {
-        Ok(address) => address,
-        Err(_) => return Err(Error::InvalidAddress),
-    };
-
-    let (mut bot, mut rx) = Client::join(&options.account, address).await?;
-
-    let mut plugins = options.plugins;
-    plugins.add(bot::Plugin::default());
-    plugins.add(pathfinder::Plugin::default());
-    bot.plugins = Arc::new(plugins);
-
-    let state = options.state;
-
-    while let Some(event) = rx.recv().await {
-        let cloned_plugins = (*bot.plugins).clone();
-        for plugin in cloned_plugins.into_iter() {
-            tokio::spawn(plugin.handle(event.clone(), bot.clone()));
-        }
-
-        tokio::spawn(bot::Plugin::handle(
-            Box::new(bot.plugins.get::<bot::Plugin>().unwrap().clone()),
-            event.clone(),
-            bot.clone(),
-        ));
-        tokio::spawn(pathfinder::Plugin::handle(
-            Box::new(bot.plugins.get::<pathfinder::Plugin>().unwrap().clone()),
-            event.clone(),
-            bot.clone(),
-        ));
-
-        tokio::spawn((options.handle)(bot.clone(), event.clone(), state.clone()));
-    }
-
-    Ok(())
-}
-
-/// A helper macro that generates a [`Plugins`] struct from a list of objects
-/// that implement [`Plugin`].
-///
-/// ```rust,no_run
-/// plugins![azalea_pathfinder::Plugin::default()];
-/// ```
-#[macro_export]
-macro_rules! plugins {
-    ($($plugin:expr),*) => {
-        {
-            let mut plugins = azalea::Plugins::new();
-            $(
-                plugins.add($plugin);
-            )*
-            plugins
-        }
-    };
-}