Fix .gitignore

.gitignore

@@ -81,8 +81,8 @@ mc-source-code/DecompilerMC/
 mc-source-code/src/
 mc-source-code/target/
 
-plugins/
+plugins/*
-world/
+world/*
 
 # project's binary configurations
 configuration.toml

pumpkin/src/world/mod.rs

@@ -0,0 +1,293 @@
+use std::{
+    collections::HashMap,
+    ops::DerefMut,
+    sync::{Arc, Mutex, MutexGuard},
+};
+
+use mio::Token;
+use num_traits::ToPrimitive;
+use pumpkin_entity::{entity_type::EntityType, EntityId};
+use pumpkin_protocol::{
+    client::play::{
+        CCenterChunk, CChunkData, CGameEvent, CLogin, CPlayerAbilities, CPlayerInfoUpdate,
+        CRemoveEntities, CRemovePlayerInfo, CSetEntityMetadata, CSpawnEntity, Metadata,
+        PlayerAction,
+    },
+    uuid::UUID,
+    ClientPacket, VarInt,
+};
+use pumpkin_world::{level::Level, radial_chunk_iterator::RadialIterator};
+use tokio::sync::mpsc;
+
+use crate::{config::BasicConfiguration, entity::player::Player};
+
+pub struct World {
+    pub level: Arc<Mutex<Level>>,
+    pub current_players: HashMap<Arc<Token>, Arc<Mutex<Player>>>,
+    // entities, players...
+}
+
+impl World {
+    pub fn load(level: Level) -> Self {
+        Self {
+            level: Arc::new(Mutex::new(level)),
+            current_players: HashMap::new(),
+        }
+    }
+
+    /// Sends a Packet to all Players, Expect some players. Because we can't lock them twice
+    pub fn broadcast_packet<P>(&self, expect: &[&Arc<Token>], packet: &P)
+    where
+        P: ClientPacket,
+    {
+        for (_, player) in self
+            .current_players
+            .iter()
+            .filter(|c| !expect.contains(&c.0))
+        {
+            let mut player = player.lock().unwrap();
+            player.client.send_packet(packet);
+        }
+    }
+
+    pub async fn spawn_player(
+        &mut self,
+        base_config: &BasicConfiguration,
+        player: Arc<Mutex<Player>>,
+    ) {
+        let mut player = player.lock().unwrap();
+        let player = player.deref_mut();
+        // This code follows the vanilla packet order
+        let entity_id = player.entity_id();
+        let gamemode = player.gamemode;
+        log::debug!("spawning player, entity id {}", entity_id);
+
+        // login packet for our new player
+        player.client.send_packet(&CLogin::new(
+            entity_id,
+            base_config.hardcore,
+            &["minecraft:overworld"],
+            base_config.max_players.into(),
+            base_config.view_distance.into(), //  TODO: view distance
+            base_config.simulation_distance.into(), // TODO: sim view dinstance
+            false,
+            false,
+            false,
+            0.into(),
+            "minecraft:overworld",
+            0, // seed
+            gamemode.to_u8().unwrap(),
+            base_config.default_gamemode.to_i8().unwrap(),
+            false,
+            false,
+            None,
+            0.into(),
+            false,
+        ));
+        dbg!("sending abilities");
+        // player abilities
+        // TODO: this is for debug purpose, remove later
+        player
+            .client
+            .send_packet(&CPlayerAbilities::new(0x02, 0.1, 0.1));
+
+        // teleport
+        let x = 10.0;
+        let y = 120.0;
+        let z = 10.0;
+        let yaw = 10.0;
+        let pitch = 10.0;
+        player.teleport(x, y, z, 10.0, 10.0);
+        let gameprofile = &player.gameprofile;
+        // first send info update to our new player, So he can see his Skin
+        // also send his info to everyone else
+        player.client.send_packet(&CPlayerInfoUpdate::new(
+            0x01 | 0x08,
+            &[pumpkin_protocol::client::play::Player {
+                uuid: gameprofile.id,
+                actions: vec![
+                    PlayerAction::AddPlayer {
+                        name: gameprofile.name.clone(),
+                        properties: gameprofile.properties.clone(),
+                    },
+                    PlayerAction::UpdateListed(true),
+                ],
+            }],
+        ));
+        self.broadcast_packet(
+            &[&player.client.token],
+            &CPlayerInfoUpdate::new(
+                0x01 | 0x08,
+                &[pumpkin_protocol::client::play::Player {
+                    uuid: gameprofile.id,
+                    actions: vec![
+                        PlayerAction::AddPlayer {
+                            name: gameprofile.name.clone(),
+                            properties: gameprofile.properties.clone(),
+                        },
+                        PlayerAction::UpdateListed(true),
+                    ],
+                }],
+            ),
+        );
+
+        // here we send all the infos of already joined players
+        let mut entries = Vec::new();
+        for (_, playerr) in self
+            .current_players
+            .iter()
+            .filter(|c| c.0 != &player.client.token)
+        {
+            let playerr = playerr.as_ref().lock().unwrap();
+            let gameprofile = &playerr.gameprofile;
+            entries.push(pumpkin_protocol::client::play::Player {
+                uuid: gameprofile.id,
+                actions: vec![
+                    PlayerAction::AddPlayer {
+                        name: gameprofile.name.clone(),
+                        properties: gameprofile.properties.clone(),
+                    },
+                    PlayerAction::UpdateListed(true),
+                ],
+            })
+        }
+        player
+            .client
+            .send_packet(&CPlayerInfoUpdate::new(0x01 | 0x08, &entries));
+
+        // Start waiting for level chunks
+        player.client.send_packet(&CGameEvent::new(13, 0.0));
+
+        let gameprofile = &player.gameprofile;
+
+        // spawn player for every client
+        self.broadcast_packet(
+            &[&player.client.token],
+            // TODO: add velo
+            &CSpawnEntity::new(
+                entity_id.into(),
+                UUID(gameprofile.id),
+                (EntityType::Player as i32).into(),
+                x,
+                y,
+                z,
+                pitch,
+                yaw,
+                yaw,
+                0.into(),
+                0.0,
+                0.0,
+                0.0,
+            ),
+        );
+        // spawn players for our client
+        let token = player.client.token.clone();
+        for (_, existing_player) in self.current_players.iter().filter(|c| c.0 != &token) {
+            let existing_player = existing_player.as_ref().lock().unwrap();
+            let entity = &existing_player.entity;
+            let gameprofile = &existing_player.gameprofile;
+            player.client.send_packet(&CSpawnEntity::new(
+                existing_player.entity_id().into(),
+                UUID(gameprofile.id),
+                (EntityType::Player as i32).into(),
+                entity.x,
+                entity.y,
+                entity.z,
+                entity.yaw,
+                entity.pitch,
+                entity.pitch,
+                0.into(),
+                0.0,
+                0.0,
+                0.0,
+            ))
+        }
+        // entity meta data
+        // set skin parts
+        if let Some(config) = player.client.config.as_ref() {
+            let packet = CSetEntityMetadata::new(
+                entity_id.into(),
+                Metadata::new(17, VarInt(0), config.skin_parts),
+            );
+            player.client.send_packet(&packet);
+            self.broadcast_packet(&[&player.client.token], &packet)
+        }
+
+        self.spawn_test_chunk(player, base_config.view_distance as u32)
+            .await;
+    }
+
+    async fn spawn_test_chunk(&self, player: &mut Player, distance: u32) {
+        let inst = std::time::Instant::now();
+        let (sender, mut chunk_receiver) = mpsc::channel(distance as usize);
+
+        let chunks: Vec<_> = RadialIterator::new(distance).collect();
+        let level = self.level.clone();
+        tokio::spawn(async move {
+            level.lock().unwrap().fetch_chunks(&chunks, sender);
+        });
+
+        player.client.send_packet(&CCenterChunk {
+            chunk_x: 0.into(),
+            chunk_z: 0.into(),
+        });
+
+        while let Some(chunk_data) = chunk_receiver.recv().await {
+            // dbg!(chunk_pos);
+            let chunk_data = match chunk_data {
+                Ok(d) => d,
+                Err(_) => continue,
+            };
+            #[cfg(debug_assertions)]
+            if chunk_data.position == (0, 0).into() {
+                use pumpkin_protocol::bytebuf::ByteBuffer;
+                let mut test = ByteBuffer::empty();
+                CChunkData(&chunk_data).write(&mut test);
+                let len = test.buf().len();
+                log::debug!(
+                    "Chunk packet size: {}B {}KB {}MB",
+                    len,
+                    len / 1024,
+                    len / (1024 * 1024)
+                );
+            }
+            player.client.send_packet(&CChunkData(&chunk_data));
+        }
+        let t = inst.elapsed();
+        dbg!("DONE", t);
+    }
+
+    /// TODO: This definitly should be in world
+    pub fn get_by_entityid(&self, from: &Player, id: EntityId) -> Option<MutexGuard<Player>> {
+        for (_, player) in self
+            .current_players
+            .iter()
+            .filter(|c| c.0 != &from.client.token)
+        {
+            let player = player.lock().unwrap();
+            if player.entity_id() == id {
+                return Some(player);
+            }
+        }
+        None
+    }
+
+    pub fn add_player(&mut self, token: Arc<Token>, player: Arc<Mutex<Player>>) {
+        self.current_players.insert(token, player);
+    }
+
+    pub fn remove_player(&mut self, player: &Player) {
+        self.current_players.remove(&player.client.token).unwrap();
+        // despawn the player
+        // todo: put this into the entitiy struct
+        let id = player.entity_id();
+        let uuid = player.gameprofile.id;
+        dbg!("1");
+        self.broadcast_packet(
+            &[&player.client.token],
+            &CRemovePlayerInfo::new(1.into(), &[UUID(uuid)]),
+        );
+        dbg!("2");
+        self.broadcast_packet(&[&player.client.token], &CRemoveEntities::new(&[id.into()]))
+    }
+}