chunk structure

src/world/chunk.rs

@@ -1 +1,41 @@
-pub struct Chunk;
+use glam::IVec3;
+use glium::{VertexBuffer, IndexBuffer};
+use super::block::Block;
+
+pub const CHUNK_SIZE: usize = 32;
+
+type ChunkBlockData = Box<[[[Block; CHUNK_SIZE]; CHUNK_SIZE]; CHUNK_SIZE]>;
+
+pub struct ChunkData {
+  pub blocks: ChunkBlockData,
+  pub has_renderable_blocks: bool,
+}
+impl ChunkData {
+  pub fn update_metadata(&mut self) {
+    todo!()
+  }
+}
+
+pub struct ChunkMesh {
+  pub is_dirty: bool,
+  pub vertex_buffer: VertexBuffer<ChunkVertex>,
+  pub index_buffer: IndexBuffer<u32>,
+}
+
+#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord)]
+pub enum ChunkState {
+  ToUnload,  //desired only
+  Nothing,
+  Loading, //current only
+  Loaded,
+  Meshing, //current only
+  Rendered
+}
+
+pub struct Chunk {
+  pub position: IVec3,
+  pub block_data: Option<ChunkData>,
+  pub mesh: Option<ChunkMesh>,
+  pub current_state: ChunkState,
+  pub desired_state: ChunkState,
+}