diff --git a/src/ui/app.rs b/src/ui/app.rs
index 979cd87..46f6758 100644
--- a/src/ui/app.rs
+++ b/src/ui/app.rs
@@ -6,48 +6,12 @@ use crate::{
         game::{self, Color::*},
         ray::Rays,
     },
-    ui::{draw, piece},
+    ui::{
+        draw, piece,
+        worker::{ThreadState, WorkerState},
+    },
 };
 
-#[derive(Clone, Debug)]
-pub struct ThreadState(Arc<Mutex<ThreadData>>);
-
-impl Default for ThreadState {
-    fn default() -> Self {
-        Self::new()
-    }
-}
-
-impl ThreadState {
-    fn new() -> Self {
-        Self(Arc::new(Mutex::new(ThreadData::new())))
-    }
-
-    fn get(&self) -> WorkerState {
-        self.0.lock().worker_state
-    }
-
-    fn set_ready(&self, state: game::State) {
-        let mut lock = self.0.lock();
-        lock.worker_state = WorkerState::Ready;
-        lock.new_state = state;
-    }
-
-    fn set_working(&self) {
-        self.0.lock().worker_state = WorkerState::Working;
-    }
-
-    fn set_done(&self) {
-        self.0.lock().worker_state = WorkerState::Done;
-    }
-
-    fn set_and_fetch(&self, worker_state: WorkerState) -> game::State {
-        let mut lock = self.0.lock();
-        lock.worker_state = worker_state;
-        lock.new_state.clone()
-    }
-}
-
 #[derive(Debug, Default)]
 pub struct Konego {
     pub state: game::State,
@@ -78,30 +42,6 @@ impl UIState {
     }
 }
 
-#[repr(u8)]
-#[derive(Copy, Clone, Debug, PartialEq)]
-pub enum WorkerState {
-    Idle,
-    Working,
-    Ready,
-    Done,
-}
-
-#[derive(Debug)]
-pub struct ThreadData {
-    pub new_state: game::State,
-    pub worker_state: WorkerState,
-}
-
-impl ThreadData {
-    fn new() -> Self {
-        Self {
-            new_state: game::State::new(),
-            worker_state: WorkerState::Idle,
-        }
-    }
-}
-
 impl GameLoop for Konego {
     fn new(_c: &mut EngineState) -> Self {
         Rays::build_lut();
diff --git a/src/ui/mod.rs b/src/ui/mod.rs
index 1ca26be..1be72d4 100644
--- a/src/ui/mod.rs
+++ b/src/ui/mod.rs
@@ -1,3 +1,4 @@
 pub mod app;
 pub mod draw;
 pub mod piece;
+pub mod worker;
diff --git a/src/ui/worker.rs b/src/ui/worker.rs
new file mode 100644
index 0000000..c5367ce
--- /dev/null
+++ b/src/ui/worker.rs
@@ -0,0 +1,66 @@
+use crate::core::game;
+
+use std::sync::{Arc, Mutex};
+
+#[repr(u8)]
+#[derive(Copy, Clone, Debug, PartialEq)]
+pub enum WorkerState {
+    Idle,
+    Working,
+    Ready,
+    Done,
+}
+
+#[derive(Debug)]
+pub struct ThreadData {
+    pub new_state: game::State,
+    pub worker_state: WorkerState,
+}
+
+impl ThreadData {
+    fn new() -> Self {
+        Self {
+            new_state: game::State::new(),
+            worker_state: WorkerState::Idle,
+        }
+    }
+}
+
+#[derive(Clone, Debug)]
+pub struct ThreadState(Arc<Mutex<ThreadData>>);
+
+impl Default for ThreadState {
+    fn default() -> Self {
+        Self::new()
+    }
+}
+
+impl ThreadState {
+    pub fn new() -> Self {
+        Self(Arc::new(Mutex::new(ThreadData::new())))
+    }
+
+    pub fn get(&self) -> WorkerState {
+        self.0.lock().unwrap().worker_state
+    }
+
+    pub fn set_ready(&self, state: game::State) {
+        let mut lock = self.0.lock().unwrap();
+        lock.worker_state = WorkerState::Ready;
+        lock.new_state = state;
+    }
+
+    pub fn set_working(&self) {
+        self.0.lock().unwrap().worker_state = WorkerState::Working;
+    }
+
+    pub fn set_done(&self) {
+        self.0.lock().unwrap().worker_state = WorkerState::Done;
+    }
+
+    pub fn set_and_fetch(&self, worker_state: WorkerState) -> game::State {
+        let mut lock = self.0.lock().unwrap();
+        lock.worker_state = worker_state;
+        lock.new_state.clone()
+    }
+}