Implement saving on the server-side

kubi-server/src/client.rs

@@ -50,7 +50,7 @@ pub fn sync_client_positions(
     };
 
     //log movement (annoying duh)
-    log::debug!("dbg: player moved id: {} coords: {} quat: {}", message.client_id, position, direction);
+    // log::debug!("dbg: player moved id: {} coords: {} quat: {}", message.client_id, position, direction);
 
     //Apply position to server-side client
     let mut trans = (&mut transforms).get(message.entity_id).unwrap();

kubi-server/src/main.rs

@@ -1,6 +1,6 @@
-use shipyard::{IntoWorkload, Workload, WorkloadModificator, World};
+use shipyard::{IntoWorkload, SystemModificator, Workload, WorkloadModificator, World};
 use std::{thread, time::Duration};
-use kubi_shared::fixed_timestamp::init_fixed_timestamp_storage;
+use kubi_shared::fixed_timestamp::{FixedTimestamp, init_fixed_timestamp_storage};
 
 mod util;
 mod config;
@@ -13,7 +13,7 @@ use config::read_config;
 use server::{bind_server, update_server, log_server_errors};
 use client::{init_client_maps, on_client_disconnect, sync_client_positions};
 use auth::authenticate_players;
-use world::{update_world, init_world};
+use world::{init_world, save::save_modified, update_world};
 
 fn initialize() -> Workload {
   (
@@ -34,7 +34,10 @@ fn update() -> Workload {
       update_world,
       sync_client_positions,
       on_client_disconnect,
-    ).into_workload()
+    ).into_workload(),
+    save_modified
+      .into_workload()
+      .make_fixed(10000, 0),
   ).into_sequential_workload()
 }
 

kubi-server/src/world.rs

@@ -250,7 +250,11 @@ fn process_block_queue(
     let Some(blocks) = &mut chunk.blocks else {
       return true
     };
-    blocks[block_position.x as usize][block_position.y as usize][block_position.z as usize] = item.block_type;
+    let block = &mut blocks[block_position.x as usize][block_position.y as usize][block_position.z as usize];
+    if item.block_type != *block {
+      *block = item.block_type;
+      chunk.data_modified = true;
+    }
     false
   });
   if initial_len != queue.queue.len() {

kubi-server/src/world/chunk.rs

@@ -16,13 +16,16 @@ pub struct Chunk {
   pub state: ChunkState,
   pub blocks: Option<BlockData>,
   pub subscriptions: HashSet<ClientId, BuildNoHashHasher<ClientId>>,
+  pub data_modified: bool,
 }
+
 impl Chunk {
   pub fn new() -> Self {
     Self {
       state: ChunkState::Nothing,
       blocks: None,
       subscriptions: HashSet::with_capacity_and_hasher(4, BuildNoHashHasher::default()),
+      data_modified: false,
     }
   }
 }

kubi-server/src/world/save.rs

@@ -1,7 +1,10 @@
 use kubi_shared::data::{io_thread::IOThreadManager, open_local_save_file};
-use shipyard::{AllStoragesView, UniqueView};
-
+use shipyard::{AllStoragesView, UniqueView, UniqueViewMut};
 use crate::config::ConfigTable;
+use super::{
+  tasks::{ChunkTask, ChunkTaskManager},
+  ChunkManager,
+};
 
 pub fn init_save_file(storages: &AllStoragesView) -> Option<IOThreadManager> {
   let config = storages.borrow::<UniqueView<ConfigTable>>().unwrap();
@@ -14,3 +17,27 @@ pub fn init_save_file(storages: &AllStoragesView) -> Option<IOThreadManager> {
     None
   }
 }
+
+pub fn save_modified(
+  mut chunks: UniqueViewMut<ChunkManager>,
+  ctm: UniqueView<ChunkTaskManager>,
+) {
+  log::info!("Saving...");
+  let mut amount_saved = 0;
+  for (position, chunk) in chunks.chunks.iter_mut() {
+    if chunk.data_modified {
+      let Some(data) = chunk.blocks.clone() else {
+        continue
+      };
+      ctm.run(ChunkTask::SaveChunk {
+        position: *position,
+        data: data,
+      });
+      chunk.data_modified = false;
+      amount_saved += 1;
+    }
+  }
+  if amount_saved > 0 {
+    log::info!("Queued {} chunks for saving", amount_saved);
+  }
+}

kubi-server/src/world/tasks.rs

@@ -12,7 +12,11 @@ pub enum ChunkTask {
   LoadChunk {
     position: IVec3,
     seed: u64,
-  }
+  },
+  SaveChunk {
+    position: IVec3,
+    data: BlockData,
+  },
 }
 
 pub enum ChunkTaskResponse {
@@ -40,12 +44,14 @@ impl ChunkTaskManager {
   }
 
   pub fn run(&self, task: ChunkTask) {
+    match task {
+      ChunkTask::LoadChunk { position: chunk_position, seed } => {
         // 1. Check if the chunk exists in the save file
-    #[allow(irrefutable_let_patterns)]
         if let ChunkTask::LoadChunk { position, .. } = &task {
           if let Some(iota) = &self.iota {
             if iota.chunk_exists(*position) {
               iota.send(IOCommand::LoadChunk { position: *position });
+              return
             }
           }
         }
@@ -53,14 +59,20 @@ impl ChunkTaskManager {
         // 2. Generate the chunk if it doesn't exist
         let sender = self.channel.0.clone();
         self.pool.spawn(move || {
-      sender.send(match task {
-        ChunkTask::LoadChunk { position: chunk_position, seed } => {
+          sender.send({
             //unwrap is fine because abort is not possible
             let (blocks, queue) = generate_world(chunk_position, seed, None).unwrap();
             ChunkTaskResponse::ChunkLoaded { chunk_position, blocks, queue }
-        }
           }).unwrap()
-    })
+        });
+      },
+      ChunkTask::SaveChunk { position, data } => {
+        // Save the chunk to the save file
+        if let Some(iota) = &self.iota {
+          iota.send(IOCommand::SaveChunk { position, data });
+        }
+      },
+    }
   }
 
   pub fn receive(&self) -> Option<ChunkTaskResponse> {

kubi/src/world/queue.rs

@@ -22,6 +22,9 @@ pub fn apply_queued_blocks(
       if event.soft && *block != Block::Air {
         return false
       }
+      if event.block_type == *block {
+        return false
+      }
       *block = event.block_type;
       //mark chunk as dirty
       let (chunk_pos, block_pos) = ChunkStorage::to_chunk_coords(event.position);