Merge pull request 'Major Rewrite' (#1) from world_manager-impl into master

Reviewed-on: #1

LICENSE

@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2026 FastVoxel contributors
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

@@ -0,0 +1,384 @@
+# FastVoxel
+
+<p align="center">
+  <img src="./logo-cropped.svg" alt="FastVoxel logo" width="180" />
+</p>
+
+**FastVoxel** is a **Voxel Engine** for Godot written as a Rust GDExtension. The goal is basically: generate chunks quickly, keep voxel storage lightweight, and build meshes at runtime for blocky worlds with textured materials.
+
+This repo contains the engine/GDExtension side of the project.
+
+It's currently being refactored constantly, so some internal structure may change, but the main ideas and APIs are stable enough to explain here. (or Are They?)
+
+## Highlights
+
+- Rust-based Godot 4 GDExtension
+- chunked voxel mesh pipeline
+- bit-packed voxel storage (solid / air)
+- procedural terrain using `fastnoise-lite`
+- chunk streaming around the player
+- runtime cube meshing with texture atlas support
+- Godot editor resources for config + voxel registry
+
+## Soon:
+
+- Multi-Threaded chunk meshing and world generation using a `Work Stealing` Thread pool with divide‑and‑conquer parallelism.
+
+## Screenshots
+
+<p align="center">
+  <img src="docs/screenshots/colors.png" alt="Albedo Vertex color" width="960" />
+</p>
+
+<p align="center">
+  <img src="docs/screenshots/heightmap-noise.png" alt="Heightmap Surface Noise" width="960" />
+</p>
+
+<p align="center">
+  <img src="docs/screenshots/normal-map.png" alt="Albedo Texture + Normal map" width="960" />
+</p>
+
+Right now the repo only contains branding assets. I haven't added gameplay screenshots yet.
+
+If you want to add screenshots that show directly on the README, the easiest thing is to just drop images somewhere like:
+
+```
+docs/screenshots/WHATEVER.png
+```
+
+Then embed them in the README like:
+
+```md
+![WHATEVER](docs/screenshots/WHATEVER.png)
+```
+
+## What FastVoxel Actually Does
+
+The engine generates a voxel world using chunk columns.
+
+Rough pipeline looks like this:
+
+1. A `SurfaceGenerator` decides if a voxel is solid or not.
+2. A `ChunkColumn` holds a vertical stack of chunks.
+3. Each `Chunk` stores voxel occupancy in a compact bit-packed format.
+4. A `Mesher` converts visible voxel faces into triangle meshes.
+5. A `Renderer` turns those meshes into Godot `MeshInstance3D` nodes.
+6. A world node updates loaded terrain as the player moves around.
+
+The idea is to keep generation, storage, and meshing fairly modular so different strategies can be swapped in later.
+
+## What FastVoxel "Doesn't" do
+
+1. The engine doesn't use compute shaders or any kind of GPU accelerated meshing algorithem.
+2. The engine doesn't bake per-vertex AO on greedy mesher (because it complicates things and I'm running on two brain cells at the moment)
+3. The engine doesn't cull the neighboring faces because it has no access to the data of adjacent chunks. (I'm working on it).
+
+## Core Concepts
+
+### Chunked world layout
+
+Terrain is divided into columns of chunks.
+
+Current defaults:
+
+- `CHUNK_SIZE = 32`
+- each chunk = `32 × 32 × 32` voxels
+- columns stack multiple chunks vertically like a hamburger
+- chunk loading/unloading happens around the player based on render distance
+
+Relevant files:
+
+- `src/chunk/chunk.rs`
+- `src/chunk/column.rs`
+- `src/chunk/chunk_manager.rs`
+
+### Bit-packed voxel storage
+
+Instead of storing a struct per voxel, chunks store occupancy using packed `u32` blocks. since a voxel is represented by a single **bit**, a single `u32` can store the state of `32 voxels`.
+
+right now a voxel is basically:
+
+- `0` -> air
+- `1` -> solid
+
+This keeps memory usage low and makes lookups very cheap.
+
+For a 32 × 32 × 32 chunk, each horizontal row of 32 voxels fits into a single u32. Which means a layer of the chunk requires 32 u32s, and the entire chunk can be stored as a 32 × 32 array of u32s. Each u32 corresponds to one row of voxels along the X axis.
+
+This compact memory layout works well for terrain meshing stage, where the main concern is to quickly check whether voxels are empty or solid. because we use a single bit to represent a voxel instead of a full struct or enum or whatever, the implementation is 32× more memory efficient (no sh- sherlock).
+
+Material differences are currently handled at the meshing/registry layer instead of inside the voxel storage itself.
+
+### Surface generation
+
+The default generator is `SimpleSurfaceGenerator`.
+
+It uses `fastnoise-lite` to create a heightmap and then fills voxels from the bottom up to that height.
+
+Important files:
+
+- `src/generation/generator.rs`
+- `src/generation/simple_heightmap.rs`
+
+The generation system is trait-based so other terrain approaches can be plugged in later.
+
+### Meshing
+
+There are a few different meshing implementations right now.
+
+- `CullingMesher` – basic visible-face meshing
+- `TexturedMesher` – cube meshing with texture atlas support
+- `BinaryGreedyMesher` – more optimization-focused experiment
+
+Relevant files:
+
+- `src/meshing/mesher.rs`
+- `src/meshing/textured_mesher.rs`
+- `src/meshing/binary_greedy_mesher.rs`
+
+The textured mesher is currently the most useful one if you're aiming for something Minecraft-like since it supports per-face UV lookup via a voxel registry.
+
+### Godot integration
+
+The engine exposes a few classes/resources to Godot via GDExtension.
+
+Main ones:
+
+- `WorldConfig` – terrain + generation settings
+- `VoxelRegistry` – describes voxel types and atlas tiles
+- `World` – runtime node responsible for generation and updates
+- `WorldPlugin` – editor-side plugin hooks
+
+Files:
+
+- `src/editor/world_config.rs`
+- `src/editor/voxel_registry.rs`
+- `src/editor/world_node.rs`
+- `src/editor/world_plugin.rs`
+
+## Project Structure
+
+```
+src/
+├── chunk/       # chunk data, columns, chunk manager, mesh buffers
+├── editor/      # Godot resources, world node, editor plugin
+├── generation/  # generator traits + procedural terrain generation
+├── meshing/     # meshing strategies
+├── rendering/   # converting mesh data to Godot meshes
+├── terrain/     # higher-level terrain experiments / refactor work
+└── voxel/       # voxel registry + earlier voxel abstractions
+```
+
+## Build and Install
+
+### Requirements
+
+You need:
+
+- Rust toolchain
+- a Godot 4 project set up for GDExtension
+- optionally a sibling Godot project if you want to use the provided `build.sh`
+
+### Build the extension
+
+```
+cargo build --release
+```
+
+### Helper build script
+
+There's a small `build.sh` script that builds the Rust library and copies it into a Godot project.
+
+By default it expects a project at:
+
+```
+../minekoloft
+```
+
+It copies the Linux shared library to:
+
+```
+../minekoloft/addons/fastvoxel/bin/linux
+```
+
+Run it with:
+
+```
+./build.sh
+```
+
+If your Godot project is somewhere else, just edit the `GODOT_PROJECT` path in the script.
+
+## Using It in Godot
+
+Typical workflow looks like this:
+
+1. build the Rust extension
+2. copy/install the addon into your Godot project
+3. create a `WorldConfig` resource
+4. create a `VoxelRegistry` resource
+5. add a `World` node to a scene
+6. assign the config and registry in the inspector
+7. trigger terrain generation
+8. call the update method each frame with the player position
+
+### WorldConfig
+
+`WorldConfig` stores generation settings like:
+
+- `chunk_size`
+- `render_distance`
+- `worker_threads`
+- `seed`
+- `frequency`
+- `terrain_height`
+
+Default values in the code are roughly:
+
+- chunk size: `Vector3i(32, 32, 32)`
+- render distance: `8`
+- worker threads: `4`
+- seed: `1234`
+- frequency: `0.03`
+- terrain height: `6`
+
+These are just meant for quick test worlds.
+
+### VoxelRegistry
+
+`VoxelRegistry` is a Godot `Resource` containing voxel model definitions.
+
+Each `VoxelModel` can specify:
+
+- voxel type
+- atlas size
+- tile index for each cube face
+
+Faces supported:
+
+- left
+- right
+- bottom
+- top
+- back
+- front
+
+The mesher uses this to assign UVs when building meshes.
+
+### Runtime API
+
+The intended `World` node API currently includes:
+
+- `generate_terrain()`
+- `regenerate_terrain()`
+- `clear_terrain()`
+- `update_from_gdscript(player_world_pos: Vector3)`
+
+Example usage in GDScript:
+
+```gdscript
+@onready var world = $World
+@onready var player = $Player
+
+func _ready() -> void:
+    world.generate_terrain()
+
+func _process(_delta: float) -> void:
+    world.update_from_gdscript(player.global_position)
+```
+
+## Engine-Level API Notes
+
+### Generation trait
+
+Terrain generation is abstracted behind `SurfaceGenerator`.
+
+```rust
+pub trait SurfaceGenerator: Send + Sync {
+    fn generate(&self, column: &mut ChunkColumn);
+    fn sample_voxel(&self, pos: Vector3i) -> bool;
+}
+```
+
+This makes it easier to experiment with:
+
+- different noise algorithms
+- caves
+- biome systems
+- deterministic seeds
+- threaded generation later on
+
+### Mesher trait
+
+Meshing also uses a trait interface.
+
+```rust
+pub trait Mesher: Send + Sync {
+    fn generate_mesh(&self, chunk: &Chunk, mesh: &mut ChunkMesh);
+    fn generate_mesh_with_registry(
+        &self,
+        chunk: &Chunk,
+        registry: &VoxelRegistry,
+        mesh: &mut ChunkMesh,
+    );
+    fn get_name(&self) -> &str;
+}
+```
+
+Some meshers only need occupancy data, while others need material/registry info.
+
+Keeping this separated makes it easier to experiment with meshing strategies without touching world management code.
+
+### ChunkManager
+
+`ChunkManager` is responsible for most of the runtime work:
+
+- managing chunk column lifetimes
+- generating terrain around the player
+- unloading distant chunks
+- triggering meshing
+- submitting meshes to the renderer
+- handing mesh instances back to the scene tree
+
+So it basically sits between generation, meshing, and rendering.
+
+## Current State
+
+The project is mid-development and some systems are being refactored (mainly around the world/terrain layers).
+
+But the overall direction is pretty clear:
+
+- compact chunk storage
+- trait-based generation
+- pluggable meshing
+- Godot editor resources
+- runtime chunk streaming
+
+## Why This README Exists
+
+Mostly so the repo has an actual front page explaining:
+
+- what the project is
+- how it works
+- how to build it
+- where to start reading the code
+
+Wiki pages tend to be less visible when someone first lands on the repository.
+
+## Possible Future Work
+
+Some things likely coming next:
+
+- finishing the current terrain/world refactor
+- adding real gameplay screenshots or gifs
+- stabilizing the Godot-facing API
+- multithreaded chunk generation **(GOD HELP)**
+- more voxel/material data in storage
+- improved greedy meshing and cross-chunk face handling
+- a small example Godot project using the addon
+
+## License
+
+This project is licensed under the MIT License.
+
+See the `LICENSE` file for the full text.

build.sh

@@ -17,7 +17,7 @@ TMP="$DEST_LINUX/lib${LIB_NAME}.so.tmp"
 cp "target/release/lib${LIB_NAME}.so" "$TMP"
 mv "$TMP" "$DEST_LINUX/lib${LIB_NAME}.so"
 
-# Optional: Cross‑compile for Windows (if needed)
+# Optional: Cross compile for Windows (if needed)
 # Uncomment the following lines if you have the Windows target installed
 # echo "Building for Windows (cross-compile)..."
 # cargo build --release --target x86_64-pc-windows-gnu

src/chunk/chunk.rs

@@ -2,11 +2,12 @@ use godot::prelude::*;
 
 pub const CHUNK_SIZE: i32 = 32;
 pub const ARR_SIZE: usize = CHUNK_SIZE.pow(3) as usize;
+
 // 32x32x32 = 32768 bits, stored in u32s (32 bits each) = 1024 u32s
 pub const BITPACKED_SIZE: usize = ARR_SIZE / 32;
 
 #[derive(Debug)]
-pub struct Chunk {
+pub struct SubChunk {
     // Bitpacked voxel data: 0 = air, 1 = solid
     pub voxels: Vec<u32>,
     // WORLD COORDINATES
@@ -14,10 +15,10 @@ pub struct Chunk {
     modified: bool,
 }
 
-impl Chunk {
+impl SubChunk {
     /// pos_z and pos_x are `world` coordinates of the chunk, inside the world
     pub fn new(world_pos_x: f64, world_pos_y: f64, world_pos_z: f64) -> Self {
-        Chunk {
+        SubChunk {
             voxels: vec![0u32; BITPACKED_SIZE],
             world_position: (world_pos_x, world_pos_y, world_pos_z),
             modified: false,
@@ -30,7 +31,7 @@ impl Chunk {
     //         as usize
     // }
     #[inline(always)]
-    fn get_voxel_index(local: Vector3i, chunk_size: Vector3i) -> usize {
+    fn get_voxel_index(local: Vector3i) -> usize {
         ((local.x << 10) | (local.y << 5) | local.z) as usize
     }
 
@@ -52,7 +53,7 @@ impl Chunk {
             local_pos
         );
 
-        let index = Self::get_voxel_index(local_pos, chunk_size);
+        let index = Self::get_voxel_index(local_pos);
         debug_assert!(
             index < BITPACKED_SIZE,
             "Voxel index {:?} out of chunk bounds",
@@ -71,7 +72,7 @@ impl Chunk {
             "Voxel position {:?} out of chunk bounds",
             voxel_pos
         );
-        let index = Self::get_voxel_index(voxel_pos, chunk_size);
+        let index = Self::get_voxel_index(voxel_pos);
 
         let word_index = index >> 5;
         let bit_index = index & 31;

src/chunk/chunk_manager.rs

@@ -3,17 +3,16 @@ use godot::classes::class_macros::private::virtuals::Os::{Vector3, Vector3i};
 use godot::global::godot_print;
 use godot::obj::Gd;
 
-use crate::chunk::{Chunk, ChunkColumn, ChunkMesh};
+use crate::chunk::{Chunk, ChunkMesh, SubChunk};
 use crate::editor::voxel_registry::VoxelRegistry;
-use crate::generation::SimpleSurfaceGenerator;
-use crate::generation::generator::SurfaceGenerator;
+use crate::generation::generator::TerrainGenerator;
 use crate::meshing::Mesher;
 use crate::rendering::Renderer;
 use std::collections::HashMap;
 use std::time::Instant;
 
 pub struct ChunkManager {
-    pub chunk_columns: HashMap<(i32, i32), ChunkColumn>,
+    pub chunk_columns: HashMap<(i32, i32), Chunk>,
     pub renderer: Renderer,
     pub last_player_chunk: (i32, i32),
 
@@ -43,7 +42,7 @@ impl ChunkManager {
         player_world_pos: Vector3,
         render_distance: i32,
         registry: &VoxelRegistry,
-        surface_generator: &dyn SurfaceGenerator,
+        surface_generator: &dyn TerrainGenerator,
         mesher: &dyn Mesher,
     ) -> bool {
         let player_chunk_index_x = (player_world_pos.x as i32).div_euclid(self.chunk_size.x);
@@ -91,7 +90,7 @@ impl ChunkManager {
         center_z: i32,
         distance: i32,
         registry: &VoxelRegistry,
-        generator: &dyn SurfaceGenerator,
+        generator: &dyn TerrainGenerator,
         mesher: &dyn Mesher,
     ) {
         use std::collections::HashSet;
@@ -129,21 +128,21 @@ impl ChunkManager {
         index_x: i32,
         index_z: i32,
         registry: &VoxelRegistry,
-        generator: &dyn SurfaceGenerator,
+        generator: &dyn TerrainGenerator,
         mesher: &dyn Mesher,
     ) {
-        let mut column = ChunkColumn::new(index_x, index_z, self.chunk_size);
+        let mut column = Chunk::new(index_x, index_z, self.chunk_size);
 
         let start = Instant::now();
 
-        generator.generate(&mut column);
+        generator.sample_chunk(&mut column);
 
         let generate_elapsed = start.elapsed().as_micros();
         godot_print!("Generation took: {}μs", generate_elapsed);
 
         // Mesh and render each chunk
         for i in 0..self.terrain_height {
-            if let Some(chunk) = column.get_chunk(i as usize) {
+            if let Some(chunk) = column.get_sub_chunk(i as usize) {
                 self.mesh_and_render_chunk(chunk, mesher, registry);
             }
         }
@@ -154,7 +153,7 @@ impl ChunkManager {
 
     fn mesh_and_render_chunk(
         &mut self,
-        chunk: &Chunk,
+        chunk: &SubChunk,
         mesher: &dyn Mesher,
         registry: &VoxelRegistry,
     ) {

src/chunk/column.rs

@@ -1,26 +1,31 @@
 use godot::classes::class_macros::private::virtuals::Os::Vector3i;
 
-use super::chunk::{CHUNK_SIZE, Chunk};
+use super::chunk::{CHUNK_SIZE, SubChunk};
 
 pub const CHUNKS_PER_COLUMN: usize = 8;
 
-pub struct ChunkColumn {
-    pub chunks: [Option<Chunk>; CHUNKS_PER_COLUMN],
+pub struct ChunkPos {
+    pub x: i64,
+    pub y: i64,
+}
+
+pub struct Chunk {
+    pub sub_chunks: [Option<SubChunk>; CHUNKS_PER_COLUMN],
     pub world_position: (i32, i32), // XZ
     pub chunk_size: Vector3i,
 }
 
-impl ChunkColumn {
+impl Chunk {
     pub fn new(x: i32, z: i32, chunk_size: Vector3i) -> Self {
-        ChunkColumn {
-            chunks: [None, None, None, None, None, None, None, None],
+        Chunk {
+            sub_chunks: [None, None, None, None, None, None, None, None],
             world_position: (x, z),
             chunk_size,
         }
     }
 
     #[inline]
-    pub fn get_chunk_index(chunk_size_y: i32, world_y: i32) -> usize {
+    pub fn get_sub_chunk_index(chunk_size_y: i32, world_y: i32) -> usize {
         (world_y / chunk_size_y) as usize
     }
 
@@ -34,31 +39,31 @@ impl ChunkColumn {
         (chunk_index * chunk_size_y) + local_y
     }
 
-    pub fn get_or_create_chunk(&mut self, chunk_y_index: i32) -> &mut Chunk {
-        if self.chunks[chunk_y_index as usize].is_none() {
+    pub fn get_or_create_sub_chunk(&mut self, chunk_y_index: i32) -> &mut SubChunk {
+        if self.sub_chunks[chunk_y_index as usize].is_none() {
             let (world_x, world_z) = self.world_position;
-            self.chunks[chunk_y_index as usize] = Some(Chunk::new(
+            self.sub_chunks[chunk_y_index as usize] = Some(SubChunk::new(
                 world_x as f64,
                 (chunk_y_index) as f64,
                 world_z as f64,
             ));
         }
-        self.chunks[chunk_y_index as usize].as_mut().unwrap()
+        self.sub_chunks[chunk_y_index as usize].as_mut().unwrap()
     }
 
-    pub fn get_chunk(&self, chunk_y_index: usize) -> Option<&Chunk> {
-        self.chunks[chunk_y_index].as_ref()
+    pub fn get_sub_chunk(&self, chunk_y_index: usize) -> Option<&SubChunk> {
+        self.sub_chunks[chunk_y_index].as_ref()
     }
 
-    pub fn get_chunk_mut(&mut self, chunk_y_index: usize) -> Option<&mut Chunk> {
-        self.chunks[chunk_y_index].as_mut()
+    pub fn get_sub_chunk_mut(&mut self, chunk_y_index: usize) -> Option<&mut SubChunk> {
+        self.sub_chunks[chunk_y_index].as_mut()
     }
 
     pub fn set_voxel(&mut self, world_pos: Vector3i, is_solid: bool) -> bool {
-        let chunk_index = Self::get_chunk_index(self.chunk_size.y, world_pos.y);
+        let chunk_index = Self::get_sub_chunk_index(self.chunk_size.y, world_pos.y);
         if chunk_index < CHUNKS_PER_COLUMN {
             let size = self.chunk_size;
-            let chunk = self.get_or_create_chunk(chunk_index as i32);
+            let chunk = self.get_or_create_sub_chunk(chunk_index as i32);
 
             let local_x = world_pos.x.rem_euclid(size.x);
             let local_y = Self::get_local_y(size.y, world_pos.y);
@@ -72,8 +77,8 @@ impl ChunkColumn {
     }
 
     pub fn get_voxel(&self, world_pos: Vector3i) -> bool {
-        let chunk_index = Self::get_chunk_index(self.chunk_size.y, world_pos.y);
-        if let Some(chunk) = self.get_chunk(chunk_index) {
+        let chunk_index = Self::get_sub_chunk_index(self.chunk_size.y, world_pos.y);
+        if let Some(chunk) = self.get_sub_chunk(chunk_index) {
             let local_x = world_pos.x.rem_euclid(CHUNK_SIZE);
             let local_y = Self::get_local_y(self.chunk_size.y, world_pos.y);
             let local_z = world_pos.z.rem_euclid(CHUNK_SIZE);

src/chunk/mod.rs

@@ -3,7 +3,7 @@ pub mod chunk_manager;
 pub mod column;
 pub mod mesh;
 
-pub use chunk::Chunk;
+pub use chunk::SubChunk;
 pub use chunk_manager::ChunkManager;
-pub use column::ChunkColumn;
+pub use column::Chunk;
 pub use mesh::ChunkMesh;

src/editor/mod.rs

@@ -1,4 +1,7 @@
-pub mod editor;
 pub mod voxel_registry;
+pub mod world_config;
+pub mod world_generator;
+pub mod world_node;
+pub mod world_plugin;
 
 pub use voxel_registry::VoxelRegistry;

src/editor/voxel_registry.rs

@@ -7,7 +7,7 @@ use godot::{
     prelude::{Export, GodotClass, GodotConvert, Var},
 };
 
-#[derive(GodotConvert, Var, Export, Debug, Clone, Copy)]
+#[derive(GodotConvert, Var, Export, Debug, Clone, Copy, PartialEq)]
 #[godot(via = i64)]
 pub enum VoxelType {
     Empty,
@@ -58,26 +58,17 @@ pub struct VoxelModel {
 impl VoxelModel {
     #[inline]
     pub fn is_solid(&self) -> bool {
-        match self.voxel_type {
-            VoxelType::Empty => false,
-            _ => true,
-        }
+        self.voxel_type != VoxelType::Empty
     }
 
     #[inline]
     pub fn is_empty(&self) -> bool {
-        match self.voxel_type {
-            VoxelType::Empty => true,
-            _ => false,
-        }
+        self.voxel_type == VoxelType::Empty
     }
 
     #[inline]
     pub fn is_cube(&self) -> bool {
-        match self.voxel_type {
-            VoxelType::Cube => true,
-            _ => false,
-        }
+        self.voxel_type == VoxelType::Cube
     }
 
     #[inline]

src/editor/world_config.rs

@@ -0,0 +1,44 @@
+use godot::{
+    classes::{IResource, Resource},
+    obj::{Base, Gd},
+    prelude::{GodotClass, godot_api},
+};
+
+use crate::editor::world_generator::WorldGeneratorResource;
+
+#[derive(GodotClass)]
+#[class(base=Resource)]
+pub struct WorldConfig {
+    base: Base<Resource>,
+
+    // ===== WORLD GROUP =====
+    #[export_group(name = "World")]
+    #[export(range = (2.0,64.0))]
+    render_distance: u8,
+
+    #[export(range = (1.0, 64.0, 1.0))]
+    worker_threads: u8,
+
+    // ===== GENERATION GROUP =====
+    #[export_group(name = "Generation")]
+    #[export]
+    generator: Option<Gd<WorldGeneratorResource>>,
+
+    #[export(range = (1.0, 10.0))]
+    surface_height: u8,
+}
+
+#[godot_api]
+impl IResource for WorldConfig {
+    fn init(base: Base<Resource>) -> Self {
+        // DEFAULT Values
+        Self {
+            base,
+            render_distance: 8,
+            worker_threads: 8,
+            generator: None,
+            // noise: None,
+            surface_height: 6,
+        }
+    }
+}

src/editor/world_generator.rs

@@ -0,0 +1,154 @@
+use godot::{
+    classes::{FastNoiseLite, Resource},
+    obj::{Base, Gd},
+    prelude::{Export, GodotClass, GodotConvert, Var},
+};
+
+use crate::runtime::types::IntoRuntime;
+use fastnoise_lite::FastNoiseLite as RustNoise;
+
+#[derive(GodotConvert, Var, Export, Debug, Clone, Copy, PartialEq)]
+#[godot(via = i64)]
+pub enum WorldGeneratorType {
+    Noise2D,
+    Noise3D,
+    Graph,
+    Flat,
+}
+
+impl Default for WorldGeneratorType {
+    fn default() -> Self {
+        WorldGeneratorType::Noise2D
+    }
+}
+
+#[derive(GodotClass, Debug)]
+#[class(init, base=Resource)]
+pub struct WorldGeneratorResource {
+    #[base]
+    base: Base<Resource>,
+
+    #[export]
+    pub noise2d: Option<Gd<FastNoiseLite>>,
+}
+impl WorldGeneratorResource {
+    fn convert_noise_type(
+        ty: godot::classes::fast_noise_lite::NoiseType,
+    ) -> fastnoise_lite::NoiseType {
+        use fastnoise_lite::NoiseType as R;
+        use godot::classes::fast_noise_lite::NoiseType as G;
+
+        match ty {
+            G::SIMPLEX => R::OpenSimplex2,
+            G::SIMPLEX_SMOOTH => R::OpenSimplex2S,
+            G::PERLIN => R::Perlin,
+            G::VALUE => R::Value,
+            G::VALUE_CUBIC => R::ValueCubic,
+            G::CELLULAR => R::Cellular,
+            _ => R::OpenSimplex2S, // reasonable default
+        }
+    }
+
+    fn convert_fractal_type(
+        ft: godot::classes::fast_noise_lite::FractalType,
+        dft: godot::classes::fast_noise_lite::DomainWarpFractalType,
+    ) -> fastnoise_lite::FractalType {
+        use fastnoise_lite::FractalType as R;
+        use godot::classes::fast_noise_lite::DomainWarpFractalType as D;
+        use godot::classes::fast_noise_lite::FractalType as G;
+
+        // Priority: domain-warp fractals first
+        let domain_fractal = match dft {
+            D::PROGRESSIVE => Some(R::DomainWarpProgressive),
+            D::INDEPENDENT => Some(R::DomainWarpIndependent),
+            D::NONE => None,
+            _ => None,
+        };
+
+        if let Some(df) = domain_fractal {
+            return df;
+        }
+
+        // Then normal fractals
+        match ft {
+            G::NONE => R::None,
+            G::FBM => R::FBm,
+            G::RIDGED => R::Ridged,
+            G::PING_PONG => R::PingPong,
+            _ => R::None,
+        }
+    }
+    fn convert_cellular_distance_function(
+        fnc: godot::classes::fast_noise_lite::CellularDistanceFunction,
+    ) -> fastnoise_lite::CellularDistanceFunction {
+        use fastnoise_lite::CellularDistanceFunction as R;
+        use godot::classes::fast_noise_lite::CellularDistanceFunction as G;
+
+        match fnc {
+            G::EUCLIDEAN => R::Euclidean,
+            G::EUCLIDEAN_SQUARED => R::EuclideanSq,
+            G::MANHATTAN => R::Manhattan,
+            G::HYBRID => R::Hybrid,
+            _ => R::Euclidean,
+        }
+    }
+    fn convert_cellular_return_type(
+        ret: godot::classes::fast_noise_lite::CellularReturnType,
+    ) -> fastnoise_lite::CellularReturnType {
+        use fastnoise_lite::CellularReturnType as R;
+        use godot::classes::fast_noise_lite::CellularReturnType as G;
+
+        match ret {
+            G::CELL_VALUE => R::CellValue,
+            G::DISTANCE => R::Distance,
+            G::DISTANCE2 => R::Distance2,
+            G::DISTANCE2_ADD => R::Distance2Add,
+            G::DISTANCE2_SUB => R::Distance2Sub,
+            G::DISTANCE2_MUL => R::Distance2Mul,
+            G::DISTANCE2_DIV => R::Distance2Div,
+            _ => R::CellValue,
+        }
+    }
+    fn convert_domain_warp_type(
+        warp: godot::classes::fast_noise_lite::DomainWarpType,
+    ) -> fastnoise_lite::DomainWarpType {
+        use fastnoise_lite::DomainWarpType as R;
+        use godot::classes::fast_noise_lite::DomainWarpType as G;
+
+        match warp {
+            G::SIMPLEX => R::OpenSimplex2,
+            G::SIMPLEX_REDUCED => R::OpenSimplex2Reduced,
+            G::BASIC_GRID => R::BasicGrid,
+            _ => R::OpenSimplex2,
+        }
+    }
+}
+
+impl IntoRuntime<RustNoise> for WorldGeneratorResource {
+    fn into_runtime(&self) -> RustNoise {
+        match &self.noise2d {
+            Some(noise) => {
+                let mut rn = RustNoise::new();
+                rn.set_seed(Some(noise.get_seed()));
+                rn.set_frequency(Some(noise.get_frequency()));
+                rn.set_noise_type(Some(Self::convert_noise_type(noise.get_noise_type())));
+                rn.set_fractal_type(Some(Self::convert_fractal_type(
+                    noise.get_fractal_type(),
+                    noise.get_domain_warp_fractal_type(),
+                )));
+                rn.set_cellular_distance_function(Some(Self::convert_cellular_distance_function(
+                    noise.get_cellular_distance_function(),
+                )));
+                rn.set_cellular_return_type(Some(Self::convert_cellular_return_type(
+                    noise.get_cellular_return_type(),
+                )));
+                rn.set_domain_warp_type(Some(Self::convert_domain_warp_type(
+                    noise.get_domain_warp_type(),
+                )));
+
+                return rn;
+            }
+            None => return RustNoise::new(),
+        }
+    }
+}

src/editor/world_node.rs

@@ -0,0 +1,153 @@
+use godot::classes::INode3D;
+use godot::prelude::*;
+
+use crate::editor::VoxelRegistry;
+use crate::editor::world_config::WorldConfig;
+use crate::runtime::Runtime;
+
+#[derive(GodotClass)]
+#[class(base=Node3D,tool)]
+pub struct World {
+    base: Base<Node3D>,
+
+    #[export_group(name = "Config")]
+
+    /// World generation and rendering settings
+    #[export]
+    config: Option<Gd<WorldConfig>>,
+
+    #[export_group(name = "Voxel Registry")]
+    #[export]
+    registry: Option<Gd<VoxelRegistry>>,
+
+    state: WorldState,
+}
+
+pub enum WorldState {
+    Uninitialized,
+    Ready { runtime: Runtime },
+}
+
+#[godot_api]
+impl INode3D for World {
+    fn init(base: Base<Node3D>) -> Self {
+        godot_print!("🧊 FastVoxel Init...");
+        Self {
+            base,
+            config: None,
+            registry: None,
+            state: WorldState::Uninitialized,
+        }
+    }
+
+    fn process(&mut self, _delta: f64) {
+        // self.add_pending_mesh_instances_to_scene();
+    }
+
+    fn ready(&mut self) {
+        self.initialize_runtime();
+    }
+}
+
+impl World {
+    fn initialize_runtime(&mut self) {
+        match (&self.registry, &self.config) {
+            (Some(reg), Some(cfg)) => {
+                let cfg_ref = cfg.bind();
+                let reg_ref = reg.bind();
+                let runtime = Runtime::new(cfg_ref, reg_ref);
+                self.state = WorldState::Ready { runtime };
+            }
+            _ => {
+                godot_error!("World: missing resources (config or registry).");
+                self.state = WorldState::Uninitialized;
+            }
+        }
+    }
+}
+
+/***
+ * Public API is below here. function that can be called by GDScript
+ * or other gdextensions in-order to manage and do all sorts of things
+***/
+#[godot_api]
+impl World {
+    #[func]
+    fn generate_world(&mut self, center_pos: Vector3i) {}
+    // #[func]
+    // fn generate_terrain(&mut self) {
+    //     match &self.registry {
+    //         None => {
+    //             godot_print!("No Voxel registry is provided to the world.")
+    //         }
+    //         Some(registry) => {
+    //             let distance = self.render_distance as i32;
+    //             let library_ref = registry.bind();
+
+    //             for index_x in -distance..=distance {
+    //                 for index_z in -distance..=distance {
+    //                     self.chunk_manager.generate_chunk_column(
+    //                         index_x,
+    //                         index_z,
+    //                         &library_ref,
+    //                         self.surface_generator.as_ref(),
+    //                         self.mesher.as_ref(),
+    //                     );
+    //                 }
+    //             }
+    //             godot_print!("Textured terrain regenerated!");
+    //         }
+    //     }
+    // }
+
+    // #[func]
+    // fn regenerate_terrain(&mut self) {
+    //     godot_print!("Regenerating terrain...");
+
+    //     self.chunk_manager.clear();
+
+    //     // Create textured mesher
+    //     self.mesher = Box::new(TexturedMesher::new());
+
+    //     self.generate_terrain();
+    // }
+
+    // #[func]
+    // fn clear_terrain(&mut self) {
+    //     godot_print!("Clearing Terrain...");
+
+    //     self.chunk_manager.clear();
+
+    //     self.chunk_manager.pending_mesh_instances.clear();
+    //     self.chunk_manager.renderer.clear_and_destroy();
+    // }
+
+    // #[func]
+    // fn update_from_gdscript(&mut self, player_world_pos: Vector3) {
+    //     match &self.registry {
+    //         None => return,
+    //         Some(registry) => {
+    //             let registry_ref = registry.bind();
+    //             self.chunk_manager.update_around_player(
+    //                 player_world_pos,
+    //                 self.render_distance as i32,
+    //                 &registry_ref,
+    //                 self.surface_generator.as_ref(),
+    //                 self.mesher.as_ref(),
+    //             );
+    //         }
+    //     }
+    // }
+
+    // fn add_pending_mesh_instances_to_scene(&mut self) {
+    //     let mesh_instances = self.chunk_manager.take_pending_mesh_instances();
+    //     if mesh_instances.is_empty() {
+    //         return;
+    //     }
+    //     let mut base = self.base_mut();
+
+    //     for mesh_instance in mesh_instances {
+    //         base.add_child(&mesh_instance.upcast::<Node3D>());
+    //     }
+    // }
+}

src/editor/world_plugin.rs

@@ -8,7 +8,7 @@ use godot::classes::Texture2D;
 use godot::classes::editor_plugin::CustomControlContainer;
 use godot::prelude::*;
 
-use crate::world::World;
+use crate::editor::world_node::World;
 
 #[derive(GodotClass)]
 #[class(init, base=EditorPlugin, tool)]
@@ -93,6 +93,11 @@ impl IEditorPlugin for WorldPlugin {
 
         // --- Build the dropdown menu ---
         let mut popup = menu_button.get_popup(); // Returns a PopupMenu
+        popup
+            .as_mut()
+            .expect("no popup")
+            .add_check_item("Follow Editor Camera");
+        popup.as_mut().expect("no popup").add_separator();
         popup.as_mut().expect("no popup").add_item("Rebuild World"); // item text, id
         popup.as_mut().expect("no popup").add_item("Clear World");
         popup.as_mut().expect("no popup").add_item("Reload Chunks");

src/generation/generator.rs

@@ -1,15 +1,6 @@
-use godot::classes::class_macros::private::virtuals::Os::Vector3i;
+use crate::chunk::Chunk;
 
-use crate::chunk::{Chunk, ChunkColumn, column};
-
-pub trait WorldGenerator: Send + Sync {
-    fn generate_chunk(&self, chunk: &mut Chunk);
-    fn get_base_height(&self, x: f32, z: f32) -> f32;
-    fn should_be_solid(&self, density: f32, relative_height: f32) -> bool;
-    fn get_name(&self) -> &str;
-}
-
-pub trait SurfaceGenerator: Send + Sync {
-    fn generate(&self, column: &mut ChunkColumn);
-    fn sample_voxel(&self, pos: Vector3i) -> bool;
+pub trait TerrainGenerator: Send + Sync {
+    fn sample_chunk(&self, column: &mut Chunk);
+    fn sample_height(&self, x: f32, z: f32) -> f32;
 }

src/generation/mod.rs

@@ -1,5 +1,4 @@
 pub mod generator;
 pub mod simple_heightmap;
 
-pub use generator::WorldGenerator;
 pub use simple_heightmap::SimpleSurfaceGenerator;

src/generation/simple_heightmap.rs

@@ -1,16 +1,15 @@
 use fastnoise_lite::{FastNoiseLite, FractalType};
-use godot::{classes::class_macros::private::virtuals::Os::Vector3i, global::pow};
+use godot::classes::class_macros::private::virtuals::Os::Vector3i;
 
-use crate::{chunk::ChunkColumn, generation::generator::SurfaceGenerator};
+use crate::chunk::{Chunk, chunk::CHUNK_SIZE};
 
 pub struct SimpleSurfaceGenerator {
     noise: FastNoiseLite,
     surface_height: u32,
-    chunk_size: Vector3i,
 }
 
 impl SimpleSurfaceGenerator {
-    pub fn new(seed: i32, frequency: f32, surface_height: u32, chunk_size: Vector3i) -> Self {
+    pub fn new(seed: i32, frequency: f32, surface_height: u32) -> Self {
         let mut noise = FastNoiseLite::new();
         noise.frequency = frequency;
         noise.noise_type = fastnoise_lite::NoiseType::OpenSimplex2;
@@ -20,7 +19,6 @@ impl SimpleSurfaceGenerator {
         Self {
             noise,
             surface_height,
-            chunk_size,
         }
     }
 
@@ -30,20 +28,20 @@ impl SimpleSurfaceGenerator {
     }
 }
 
-impl SurfaceGenerator for SimpleSurfaceGenerator {
-    fn generate(&self, column: &mut ChunkColumn) {
-        let size_x = self.chunk_size.x;
-        let size_z = self.chunk_size.z;
+impl SimpleSurfaceGenerator {
+    fn generate(&self, column: &mut Chunk) {
+        let size_x = CHUNK_SIZE;
+        let size_z = CHUNK_SIZE;
 
         let base_x = column.world_position.0 * size_x;
         let base_z = column.world_position.1 * size_z;
 
         let freq = 1.0 / 32.0;
 
-        let column_height = self.chunk_size.y * self.surface_height as i32;
+        let column_height = CHUNK_SIZE * self.surface_height as i32;
 
-        for x in 0..self.chunk_size.x {
-            for z in 0..self.chunk_size.z {
+        for x in 0..CHUNK_SIZE {
+            for z in 0..CHUNK_SIZE {
                 // world coordinates of this column
                 let world_x = base_x + x;
                 let world_z = base_z + z;
@@ -71,7 +69,7 @@ impl SurfaceGenerator for SimpleSurfaceGenerator {
 
         let noise = Self::normalize_value(noise);
 
-        let column_height = self.chunk_size.y * self.surface_height as i32;
+        let column_height = CHUNK_SIZE * self.surface_height as i32;
         let height = (noise.powi(2) * column_height as f32) as i32;
 
         pos.y <= height

src/lib.rs

@@ -1,13 +1,13 @@
 use godot::prelude::*;
 
 mod voxel;
-mod world;
 
 mod chunk;
 mod editor;
 mod generation;
 mod meshing;
 mod rendering;
+mod runtime;
 
 struct FastVoxel;
 

src/meshing/binary_greedy_mesher.rs

@@ -1,5 +1,5 @@
 use crate::chunk::chunk::CHUNK_SIZE;
-use crate::chunk::{Chunk, ChunkMesh};
+use crate::chunk::{SubChunk, ChunkMesh};
 use crate::editor::voxel_registry::VoxelRegistry;
 use crate::meshing::Mesher;
 use godot::prelude::*;
@@ -20,7 +20,7 @@ impl BinaryGreedyMesher {
         Self
     }
 
-    pub fn generate_mesh(&self, chunk: &Chunk, mesh: &mut ChunkMesh) {
+    pub fn generate_mesh(&self, chunk: &SubChunk, mesh: &mut ChunkMesh) {
         mesh.vertices.clear();
         mesh.normals.clear();
         mesh.indices.clear();
@@ -34,7 +34,7 @@ impl BinaryGreedyMesher {
         self.mesh_face(chunk, mesh, 5); // +Z (forward)
     }
 
-    fn mesh_face(&self, chunk: &Chunk, mesh: &mut ChunkMesh, face_dir: usize) {
+    fn mesh_face(&self, chunk: &SubChunk, mesh: &mut ChunkMesh, face_dir: usize) {
         let size = CHUNK_SIZE as usize;
 
         // For each slice perpendicular to the face direction
@@ -191,7 +191,7 @@ impl BinaryGreedyMesher {
         quad: GreedyQuad,
         face_dir: usize,
         axis: usize,
-        chunk: &Chunk,
+        chunk: &SubChunk,
     ) {
         let base_idx = mesh.vertices.len() as i32;
 
@@ -297,13 +297,13 @@ impl BinaryGreedyMesher {
 }
 
 impl Mesher for BinaryGreedyMesher {
-    fn generate_mesh(&self, chunk: &Chunk, mesh: &mut ChunkMesh) {
+    fn generate_mesh(&self, chunk: &SubChunk, mesh: &mut ChunkMesh) {
         self.generate_mesh(chunk, mesh);
     }
 
     fn generate_mesh_with_registry(
         &self,
-        chunk: &Chunk,
+        chunk: &SubChunk,
         _registry: &VoxelRegistry,
         mesh: &mut ChunkMesh,
     ) {

src/meshing/mesher.rs

@@ -1,12 +1,12 @@
-use crate::chunk::{Chunk, ChunkMesh};
+use crate::chunk::{ChunkMesh, SubChunk};
 use crate::editor::voxel_registry::VoxelRegistry;
 use godot::prelude::*;
 
 pub trait Mesher: Send + Sync {
-    fn generate_mesh(&self, chunk: &Chunk, mesh: &mut ChunkMesh);
+    fn generate_mesh(&self, chunk: &SubChunk, mesh: &mut ChunkMesh);
     fn generate_mesh_with_registry(
         &self,
-        chunk: &Chunk,
+        chunk: &SubChunk,
         registry: &VoxelRegistry,
         mesh: &mut ChunkMesh,
     );
@@ -24,7 +24,7 @@ impl CullingMesher {
 impl Mesher for CullingMesher {
     fn generate_mesh_with_registry(
         &self,
-        chunk: &Chunk,
+        chunk: &SubChunk,
         registry: &VoxelRegistry,
         mesh: &mut ChunkMesh,
     ) {
@@ -32,7 +32,7 @@ impl Mesher for CullingMesher {
         self.generate_mesh(chunk, mesh);
     }
 
-    fn generate_mesh(&self, chunk: &Chunk, mesh: &mut ChunkMesh) {
+    fn generate_mesh(&self, chunk: &SubChunk, mesh: &mut ChunkMesh) {
         mesh.clear();
 
         // Simple CullingMesher - generate a quad for each solid voxel face
@@ -72,7 +72,7 @@ impl CullingMesher {
         z: i32,
         voxel: bool,
         mesh: &mut ChunkMesh,
-        chunk: &Chunk,
+        chunk: &SubChunk,
     ) {
         let color = Color {
             r: 255.0,

src/meshing/textured_mesher.rs

@@ -1,5 +1,5 @@
 use crate::chunk::chunk::CHUNK_SIZE;
-use crate::chunk::{Chunk, ChunkMesh};
+use crate::chunk::{SubChunk, ChunkMesh};
 use crate::editor::voxel_registry::{VoxelModel, VoxelRegistry};
 use crate::meshing::Mesher;
 use godot::prelude::*;
@@ -74,7 +74,7 @@ impl TexturedMesher {
         ]
     }
     #[inline(always)]
-    fn is_face_visible(chunk: &Chunk, x: usize, y: usize, z: usize, face: usize) -> bool {
+    fn is_face_visible(chunk: &SubChunk, x: usize, y: usize, z: usize, face: usize) -> bool {
         // Convert to i32 for neighbor calculation
         let (nx, ny, nz) = match face {
             0 => (x as i32 - 1, y as i32, z as i32), // LEFT
@@ -108,7 +108,7 @@ impl TexturedMesher {
         z: usize,
         model: &VoxelModel, // Already borrowed, no binding needed
         mesh: &mut ChunkMesh,
-        chunk: &Chunk,
+        chunk: &SubChunk,
     ) {
         let pos = Vector3::new(x as f32, y as f32, z as f32);
 
@@ -168,13 +168,13 @@ impl TexturedMesher {
 }
 
 impl Mesher for TexturedMesher {
-    fn generate_mesh(&self, chunk: &Chunk, mesh: &mut ChunkMesh) {
+    fn generate_mesh(&self, chunk: &SubChunk, mesh: &mut ChunkMesh) {
         panic!("TexturedMesher requires a VoxelRegistry. Use generate_mesh_with_registry instead.");
     }
 
     fn generate_mesh_with_registry(
         &self,
-        chunk: &Chunk,
+        chunk: &SubChunk,
         registry: &VoxelRegistry,
         mesh: &mut ChunkMesh,
     ) {

src/rendering/renderer.rs

@@ -1,6 +1,6 @@
 use std::collections::HashMap;
 
-use crate::chunk::{Chunk, ChunkMesh};
+use crate::chunk::{ChunkMesh, SubChunk};
 use godot::{
     classes::{
         ArrayMesh, Material, MeshInstance3D, ResourceLoader, StandardMaterial3D,
@@ -40,7 +40,7 @@ impl Renderer {
             .and_then(|resource| resource.try_cast::<Material>().ok())
     }
 
-    pub fn render_chunk(&mut self, chunk: &Chunk, mesh: &ChunkMesh) -> Gd<MeshInstance3D> {
+    pub fn render_chunk(&mut self, chunk: &SubChunk, mesh: &ChunkMesh) -> Gd<MeshInstance3D> {
         let chunk_key = chunk.world_position;
         let chunk_key_i32 = (chunk_key.0 as i32, chunk_key.1 as i32, chunk_key.2 as i32);
 
@@ -137,7 +137,11 @@ impl Renderer {
         mesh_instance
     }
 
-    pub fn render_chunk_with_uvs(&mut self, chunk: &Chunk, mesh: &ChunkMesh) -> Gd<MeshInstance3D> {
+    pub fn render_chunk_with_uvs(
+        &mut self,
+        chunk: &SubChunk,
+        mesh: &ChunkMesh,
+    ) -> Gd<MeshInstance3D> {
         let chunk_key = chunk.world_position;
         let chunk_key_i32 = (chunk_key.0 as i32, chunk_key.1 as i32, chunk_key.2 as i32);
 

src/runtime/mod.rs

@@ -0,0 +1,5 @@
+pub mod runtime;
+pub mod types;
+
+pub use runtime::Runtime;
+pub use runtime::*;

src/runtime/runtime.rs

@@ -0,0 +1,34 @@
+use std::collections::HashMap;
+
+use crate::{chunk::Chunk, runtime::types::WorldConfig};
+
+pub struct Runtime {
+    chunks: HashMap<(i32, i32), Chunk>,
+    // renderer: Renderer,
+}
+
+impl Runtime {
+    pub fn new(config: WorldConfig, registry: VoxelRegistry) -> Self {
+        // Terrain Size calculation
+        let width = config.render_distance * 2 + 1;
+        let height = config.surface_height as u8;
+        let capacity = (width * width * height) as usize;
+
+        Self {
+            /***
+             * The render distance defines a square area around the player in chunks.
+             *
+             * Example:
+             * With a render distance of 8, the player stands on the "center" chunk.
+             * There are 8 chunks in extended in each direction (left/right and forward/backward),
+             * forming a (8 * 2 + 1) = 17 chunk wide grid.
+             *
+             * Total chunks = (render_distance * 2 + 1).pow(2) * height
+             *
+             * We preallocate this capacity to minimize HashMap reallocations as the
+             * visible terrain around the player is populated.
+             ***/
+            chunks: HashMap::<(i32, i32), Chunk>::with_capacity(capacity),
+        }
+    }
+}

src/runtime/types.rs

@@ -0,0 +1,17 @@
+use crate::generation::generator::TerrainGenerator;
+
+pub trait IntoRuntime<T> {
+    fn into_runtime(&self) -> T;
+}
+
+pub struct WorldConfig {
+    // ===== WORLD GROUP =====
+    pub render_distance: u8,
+
+    pub worker_threads: u8,
+
+    pub surface_height: u8,
+
+    // ===== GENERATION GROUP =====
+    generator: Box<dyn TerrainGenerator>,
+}

src/world.rs

@@ -1,197 +0,0 @@
-use godot::classes::{INode3D, VoxelGi};
-use godot::prelude::*;
-
-use crate::chunk::ChunkManager;
-use crate::editor::VoxelRegistry;
-use crate::generation::SimpleSurfaceGenerator;
-use crate::generation::generator::SurfaceGenerator;
-use crate::meshing::binary_greedy_mesher::BinaryGreedyMesher;
-use crate::meshing::{Mesher, TexturedMesher};
-
-#[derive(GodotClass)]
-#[class(base=Node3D,tool)]
-pub struct World {
-    base: Base<Node3D>,
-
-    // ===== RENDERING GROUP =====
-    #[export_group(name = "Rendering")]
-    #[export]
-    chunk_size: Vector3i,
-
-    #[export(range = (2.0,64.0))]
-    render_distance: u8,
-
-    // ===== GENERATION GROUP =====
-    #[export_group(name = "Generation")]
-    #[export]
-    world_seed: i32,
-
-    #[export(range = (0.01, 4.0, 0.01))]
-    noise_frequency: f32,
-
-    #[export(range = (1.0, 10.0))]
-    terrain_height: u32,
-
-    #[export(range = (1.0, 64.0, 1.0))]
-    workder_threads: u8,
-
-    #[export_group(name = "Voxel Registry")]
-    #[export]
-    registry: Option<Gd<VoxelRegistry>>,
-
-    #[export_group(name = "GI")]
-    #[export]
-    voxelgi_node: Option<Gd<VoxelGi>>,
-
-    // World data (temporary)
-    chunk_manager: ChunkManager,
-    surface_generator: Box<dyn SurfaceGenerator>,
-    mesher: Box<dyn Mesher>,
-}
-
-#[godot_api]
-impl INode3D for World {
-    fn init(base: Base<Node3D>) -> Self {
-        godot_print!("🧊 Hello from FastVoxel");
-
-        let surface_generator = Box::new(SimpleSurfaceGenerator::new(
-            1234,
-            0.3,
-            6,
-            Vector3i {
-                x: 32,
-                y: 32,
-                z: 32,
-            },
-        ));
-
-        let mesher = Box::new(TexturedMesher::new());
-        let chunk_manager = ChunkManager::new();
-
-        Self {
-            render_distance: 8,
-            chunk_size: Vector3i::new(16, 16, 16),
-            world_seed: 1234,
-            noise_frequency: 0.03,
-            terrain_height: 8,
-            base,
-            surface_generator,
-            mesher,
-            chunk_manager,
-            workder_threads: 4,
-            registry: None,
-            voxelgi_node: None,
-        }
-    }
-
-    fn process(&mut self, _delta: f64) {
-        self.add_pending_mesh_instances_to_scene();
-    }
-
-    fn ready(&mut self) {
-        if self.registry.is_none() {
-            godot_error!(
-                "VoxelRegistry not assigned! Please assign a VoxelRegistry resource in the editor."
-            );
-            return;
-        }
-
-        if self.voxelgi_node.is_none() {
-            godot_error!("VoxelGI Node is not selected.");
-            return;
-        }
-
-        let surface_generator = Box::new(SimpleSurfaceGenerator::new(
-            self.world_seed,
-            self.noise_frequency,
-            self.terrain_height,
-            self.chunk_size,
-        ));
-        self.surface_generator = surface_generator;
-        self.chunk_manager.chunk_size = self.chunk_size;
-        self.chunk_manager.terrain_height = self.terrain_height;
-
-        self.regenerate_terrain();
-        godot_print!("World ready! building GI...");
-    }
-}
-
-#[godot_api]
-impl World {
-    #[func]
-    fn generate_terrain(&mut self) {
-        match &self.registry {
-            None => {
-                godot_print!("No Voxel registry is provided to the world.")
-            }
-            Some(registry) => {
-                let distance = self.render_distance as i32;
-                let library_ref = registry.bind();
-
-                for index_x in -distance..=distance {
-                    for index_z in -distance..=distance {
-                        self.chunk_manager.generate_chunk_column(
-                            index_x,
-                            index_z,
-                            &library_ref,
-                            self.surface_generator.as_ref(),
-                            self.mesher.as_ref(),
-                        );
-                    }
-                }
-                godot_print!("Textured terrain regenerated!");
-            }
-        }
-    }
-
-    #[func]
-    fn regenerate_terrain(&mut self) {
-        godot_print!("Regenerating terrain...");
-
-        self.chunk_manager.clear();
-
-        // Create textured mesher
-        self.mesher = Box::new(TexturedMesher::new());
-
-        self.generate_terrain();
-    }
-
-    #[func]
-    fn clear_terrain(&mut self) {
-        godot_print!("Clearing Terrain...");
-
-        self.chunk_manager.clear();
-
-        self.chunk_manager.pending_mesh_instances.clear();
-        self.chunk_manager.renderer.clear_and_destroy();
-    }
-
-    #[func]
-    fn update_from_gdscript(&mut self, player_world_pos: Vector3) {
-        match &self.registry {
-            None => return,
-            Some(registry) => {
-                let registry_ref = registry.bind();
-                self.chunk_manager.update_around_player(
-                    player_world_pos,
-                    self.render_distance as i32,
-                    &registry_ref,
-                    self.surface_generator.as_ref(),
-                    self.mesher.as_ref(),
-                );
-            }
-        }
-    }
-
-    fn add_pending_mesh_instances_to_scene(&mut self) {
-        let mesh_instances = self.chunk_manager.take_pending_mesh_instances();
-        if mesh_instances.is_empty() {
-            return;
-        }
-        let mut base = self.base_mut();
-
-        for mesh_instance in mesh_instances {
-            base.add_child(&mesh_instance.upcast::<Node3D>());
-        }
-    }
-}

src/world/world_manager.rs

@@ -1,3 +0,0 @@
-pub struct WorldManager {
-    chunks: HashMap<(i32, i32), Chunk>,
-}