diff --git a/src/main.rs b/src/main.rs
index 96b4ff4..197f346 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,20 +1,10 @@
 mod rgba;
 mod trekstor;
 
-use embedded_graphics::{prelude::*, primitives::*};
-use evdev::KeyCode;
-
 use crate::trekstor::Trekstor;
 
-struct AppState {
-    x: i32,
-    y: i32,
-}
-
 fn main() {
-    let app_state = AppState { x: 0, y: 0 };
-
-    let mut trekstor = Trekstor::new(60, app_state);
+    let mut trekstor = Trekstor::new(30);
 
     trekstor.update();
 
diff --git a/src/trekstor.rs b/src/trekstor.rs
index ebd874a..dccae9c 100644
--- a/src/trekstor.rs
+++ b/src/trekstor.rs
@@ -13,8 +13,6 @@ use crate::rgba::Rgba;
 use self::input::InputState;
 use self::screen::Screen;
 
-type UpdateFn<S> = fn(&mut Context, &mut S) -> bool;
-
 mod input;
 mod screen;
 
@@ -23,8 +21,7 @@ pub struct Context {
     pub input: InputState,
 }
 
-pub struct Trekstor<S> {
-    state: S,
+pub struct Trekstor {
     ctx: Context,
     window: Rc<MinimalSoftwareWindow>,
     // buffer: Vec<Rgba8Pixel>,
@@ -33,14 +30,13 @@ pub struct Trekstor<S> {
     update_timestep: Duration,
 }
 
-impl<S> Trekstor<S> {
-    pub fn new(update_fps: i32, state: S) -> Self {
+impl Trekstor {
+    pub fn new(update_fps: i32) -> Self {
         let screen = Screen::new();
         let input = InputState::new(&screen);
         let window = MinimalSoftwareWindow::new(RepaintBufferType::ReusedBuffer);
 
         Self {
-            state,
             ctx: Context { screen, input },
             window,
             // buffer: Vec::new(),
@@ -95,13 +91,14 @@ impl<S> Trekstor<S> {
             }
 
             self.window.draw_if_needed(|renderer| {
+                dbg!("Rendering");
                 renderer.render(&mut buffer1, self.ctx.screen.width() as usize);
-            });
 
-            self.ctx
-                .screen
-                .fill_contiguous(&self.ctx.screen.rect(), buffer1)
-                .unwrap();
+                self.ctx
+                    .screen
+                    .fill_contiguous(&self.ctx.screen.rect(), buffer1)
+                    .ok();
+            });
 
             self.ctx.screen.flush();
             self.ctx.input.finish();
@@ -109,7 +106,7 @@ impl<S> Trekstor<S> {
     }
 }
 
-impl<S> Platform for Trekstor<S> {
+impl Platform for Trekstor {
     fn create_window_adapter(
         &self,
     ) -> Result<Rc<dyn slint::platform::WindowAdapter>, slint::PlatformError> {