Extract chunk block generation out to it's own function

src/voxel/world.rs

@@ -22,17 +22,26 @@ impl Chunk {
             self.blocks.len(),
             (chunk_dims.x * chunk_dims.y * chunk_dims.z) as usize
         );
+
+        let block = &self.blocks[block_idx];
+        if !block.is_empty() {
+            block.to_owned()
+        } else {
+            self.gen_block(pos, block_idx, noise_dims);
+            self.blocks[block_idx].to_owned()
+        }
+    }
+
+    fn gen_block(&mut self, block_pos: glam::UVec3, block_idx: usize, noise_dims: glam::UVec3) {
         let block = &mut self.blocks[block_idx];
 
-        if block.is_empty() {
         // Extract relevant noise values from the chunk
         let mut noise_vals = Vec::new();
-
         let mut block_sign = 0.0;
         for z in 0..2 {
             for y in 0..2 {
                 for x in 0..2 {
-                        let noise_pos = glam::uvec3(x, y, z) + pos;
+                    let noise_pos = glam::uvec3(x, y, z) + block_pos;
                     let noise_idx = math::to_1d_index(noise_pos, noise_dims);
                     let val = self.noise[noise_idx];
                     noise_vals.push(val);
@@ -70,9 +79,6 @@ impl Chunk {
             }
         }
     }
-
-        block.to_owned()
-    }
 }
 
 #[derive(Debug, Clone, Copy)]