multi-threaded generation

Cargo.lock

@@ -2022,7 +2022,7 @@ dependencies = [
  "vec_map",
  "wasm-bindgen",
  "web-sys",
- "windows 0.48.0",
+ "windows 0.54.0",
 ]
 
 [[package]]
@@ -3070,6 +3070,7 @@ dependencies = [
  "camera_system",
  "iyes_perf_ui",
  "noise 0.8.2",
+ "rayon",
  "world_generation",
 ]
 
@@ -3309,6 +3310,26 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "60a357793950651c4ed0f3f52338f53b2f809f32d83a07f72909fa13e4c6c1e3"
 
+[[package]]
+name = "rayon"
+version = "1.10.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b418a60154510ca1a002a752ca9714984e21e4241e804d32555251faf8b78ffa"
+dependencies = [
+ "either",
+ "rayon-core",
+]
+
+[[package]]
+name = "rayon-core"
+version = "1.12.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1465873a3dfdaa8ae7cb14b4383657caab0b3e8a0aa9ae8e04b044854c8dfce2"
+dependencies = [
+ "crossbeam-deque",
+ "crossbeam-utils",
+]
+
 [[package]]
 name = "rectangle-pack"
 version = "0.4.2"
@@ -4538,6 +4559,7 @@ dependencies = [
  "asset_loader",
  "bevy",
  "noise 0.9.0",
+ "rayon",
  "serde",
  "serde_json",
 ]