chunk marking/loading!!

src/main.rs

@@ -21,9 +21,9 @@ pub(crate) mod prefabs;
 pub(crate) mod transform;
 pub(crate) mod settings;
 
-use rendering::{Rederer, RenderTarget, BackgroundColor, clear_background};
+use rendering::{Renderer, RenderTarget, BackgroundColor, clear_background};
 use player::spawn_player;
-use world::{ChunkStorage, loading::load_world_around_player};
+use world::{ChunkStorage, ChunkMeshStorage, loading::load_world_around_player};
 use prefabs::load_prefabs;
 use settings::GameSettings;
 
@@ -56,14 +56,13 @@ fn main() {
   let world = World::new();
 
   //Add systems and uniques, Init and load things
-  world.add_unique_non_send_sync(
-    Rederer::init(&event_loop)
-  );
-  load_prefabs(&world);
+  world.add_unique_non_send_sync(Renderer::init(&event_loop));
   world.add_unique(ChunkStorage::new());
+  world.add_unique_non_send_sync(ChunkMeshStorage::new());
   world.add_unique(BackgroundColor(vec3(0.5, 0.5, 1.)));
   world.add_unique(DeltaTime(Duration::default()));
   world.add_unique(GameSettings::default());
+  load_prefabs(&world);
 
   //Register workloads
   world.add_workload(startup);
@@ -102,7 +101,7 @@ fn main() {
 
         //Start rendering (maybe use custom views for this?)
         let mut target = {
-          let renderer = world.borrow::<NonSendSync<UniqueView<Rederer>>>().unwrap();
+          let renderer = world.borrow::<NonSendSync<UniqueView<Renderer>>>().unwrap();
           renderer.display.draw()
         };
         target.clear_color_and_depth((0., 0., 0., 1.), 1.);

src/prefabs.rs

@@ -1,7 +1,7 @@
 use shipyard::{World, NonSendSync, UniqueView, Unique};
 use glium::{texture::SrgbTexture2dArray, Program};
 use strum::EnumIter;
-use crate::rendering::Rederer;
+use crate::rendering::Renderer;
 
 mod texture;
 mod shaders;
@@ -57,7 +57,7 @@ pub struct BlockTexturesPrefab(SrgbTexture2dArray);
 pub struct ChunkShaderPrefab(Program);
 
 pub fn load_prefabs(world: &World) {
-  let renderer = world.borrow::<NonSendSync<UniqueView<Rederer>>>().unwrap();
+  let renderer = world.borrow::<NonSendSync<UniqueView<Renderer>>>().unwrap();
   world.add_unique_non_send_sync(BlockTexturesPrefab(
     load_texture2darray_prefab::<BlockTextures, _>(
       "./assets/blocks/".into(), 

src/rendering.rs

@@ -16,10 +16,10 @@ pub struct RenderTarget(pub glium::Frame);
 pub struct BackgroundColor(pub Vec3);
 
 #[derive(Unique)]
-pub struct Rederer {
+pub struct Renderer {
   pub display: Display
 }
-impl Rederer {
+impl Renderer {
   pub fn init(event_loop: &EventLoop<()>) -> Self {
     log::info!("initializing display");
     let wb = WindowBuilder::new()

src/world.rs

@@ -58,6 +58,7 @@ impl<'a> ChunksNeighbors<'a> {
 }
 
 #[derive(Default, Unique)]
+#[track(Modification)]
 pub struct ChunkStorage {
   pub chunks: HashMap<IVec3, Chunk>
 }
@@ -101,9 +102,11 @@ impl ChunkStorage {
   }
 }
 
+
+#[derive(Default, Unique)]
 pub struct ChunkMeshStorage {
-  meshes: HashMap<u64, ChunkMesh, BuildNoHashHasher<u64>>,
-  index: u64,
+  meshes: HashMap<usize, ChunkMesh, BuildNoHashHasher<usize>>,
+  index: usize,
 }
 impl ChunkMeshStorage {
   pub fn new() -> Self {
@@ -112,17 +115,17 @@ impl ChunkMeshStorage {
       index: 0,
     }
   }
-  pub fn insert(&mut self, mesh: ChunkMesh) -> u64 {
+  pub fn insert(&mut self, mesh: ChunkMesh) -> usize {
     let index = self.index;
     self.meshes.insert_unique_unchecked(index, mesh);
     self.index += 1;
     index
   }
-  pub fn update(&mut self, key: u64, mesh: ChunkMesh) -> Result<()> {
+  pub fn update(&mut self, key: usize, mesh: ChunkMesh) -> Result<()> {
     *self.meshes.get_mut(&key).context("Chunk doesn't exist")? = mesh;
     Ok(())
   }
-  pub fn remove(&mut self, key: u64) -> Result<()> {
+  pub fn remove(&mut self, key: usize) -> Result<()> {
     self.meshes.remove(&key).context("Chunk doesn't exist")?;
     Ok(())
   }

src/world/chunk.rs

@@ -21,9 +21,10 @@ pub struct ChunkMesh {
   pub index_buffer: IndexBuffer<u32>,
 }
 
-#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord)]
+#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Default)]
 pub enum ChunkState {
   ToUnload,  //desired only
+  #[default]
   Nothing,
   Loading,   //current only
   Loaded,
@@ -39,3 +40,14 @@ pub struct Chunk {
   pub current_state: ChunkState,
   pub desired_state: ChunkState,
 }
+impl Chunk {
+  pub fn new(position: IVec3) -> Self {
+    Self {
+      position,
+      block_data: None,
+      mesh_index: None,
+      current_state: Default::default(),
+      desired_state: Default::default(),
+    }
+  }
+}

src/world/loading.rs

@@ -1,31 +1,32 @@
 use glam::ivec3;
-use shipyard::{View, UniqueView, UniqueViewMut, IntoIter, Workload, IntoWorkload};
+use shipyard::{View, UniqueView, UniqueViewMut, IntoIter, Workload, IntoWorkload, NonSendSync};
 use crate::{player::LocalPlayer, transform::Transform, settings::GameSettings};
-use super::{ChunkStorage, chunk::{ChunkState, CHUNK_SIZE}};
+use super::{ChunkStorage, chunk::{Chunk, ChunkState, CHUNK_SIZE}, ChunkMeshStorage};
 
 pub fn load_world_around_player() -> Workload {
   (
-    mark_chunks,
+    update_chunks_if_player_moved,
+    unload_marked_chunks
   ).into_workload()
 }
 
-pub fn mark_chunks(
+pub fn update_chunks_if_player_moved(
   v_settings: UniqueView<GameSettings>,
   v_local_player: View<LocalPlayer>,
   v_transform: View<Transform>,
   mut vm_world: UniqueViewMut<ChunkStorage>,
 ) {
-  //Read game settings
-  let load_distance = (v_settings.render_distance + 1) as i32;
-  
-  //Check if a player moved
+  //Check if the player actually moved
   let Some((_, transform)) = (&v_local_player, v_transform.inserted_or_modified()).iter().next() else {
     return
   };
 
+  //Read game settings
+  let load_distance = (v_settings.render_distance + 1) as i32;
+
   //If it did, get it's position and current chunk
-  let position = transform.0.to_scale_rotation_translation().2;
-  let at_chunk = position.as_ivec3() / CHUNK_SIZE as i32;
+  let player_position = transform.0.to_scale_rotation_translation().2;
+  let player_at_chunk = player_position.as_ivec3() / CHUNK_SIZE as i32;
 
   //Then, mark *ALL* chunks with ToUnload
   for (_, chunk) in &mut vm_world.chunks {
@@ -37,19 +38,46 @@ pub fn mark_chunks(
     for y in -load_distance..=load_distance {
       for z in -load_distance..=load_distance {
         let chunk_pos_offset = ivec3(x, y, z);
+        let chunk_pos = player_at_chunk + chunk_pos_offset;
         let is_border = {
           chunk_pos_offset.x.abs() == load_distance ||
           chunk_pos_offset.y.abs() == load_distance ||
           chunk_pos_offset.z.abs() == load_distance
         };
+        //If chunk doesn't exist create it
+        let chunk = match vm_world.chunks.get_mut(&chunk_pos) {
+          Some(chunk) => chunk,
+          None => {
+            let chunk = Chunk::new(chunk_pos);
+            vm_world.chunks.insert_unique_unchecked(chunk_pos, chunk);
+            vm_world.chunks.get_mut(&chunk_pos).unwrap()
+          }
+        };
         let desired = match is_border {
           true  => ChunkState::Loaded,
           false => ChunkState::Rendered,
         };
+        chunk.desired_state = desired;
+      }
     }
   }
 }
 
-  //TODO
-  todo!()
+fn unload_marked_chunks(
+  mut vm_world: UniqueViewMut<ChunkStorage>,
+  mut vm_meshes: NonSendSync<UniqueViewMut<ChunkMeshStorage>>
+) {
+  if !vm_world.is_modified() {
+    return
+  }
+  vm_world.chunks.retain(|_, chunk| {
+    if chunk.desired_state == ChunkState::ToUnload {
+      if let Some(mesh_index) = chunk.mesh_index {
+        vm_meshes.remove(mesh_index).unwrap();
+      }
+      false
+    } else {
+      true
+    }
+  })
 }