diff --git a/assets/shaders/build_status.frag b/assets/shaders/build_status.frag
index af91d0f..26965a9 100644
--- a/assets/shaders/build_status.frag
+++ b/assets/shaders/build_status.frag
@@ -5,7 +5,7 @@ uniform sampler2D source;
 uniform float u_mouse;
 uniform float value = 0.2;
 uniform bool is_error = false;
-uniform int line_length = 100;
+uniform int speedup = 1;
 
 float random (in vec2 st) {
     return fract(sin(dot(st.xy,
@@ -49,7 +49,7 @@ void main() {
   vec2 st = gl_FragCoord.xy/u_resolution.xy * 3.0;
   vec3 color = vec3(0.0);
 
-  float speed = u_time;
+  float speed = u_time * speedup;
   float value = 0.8;
   vec3 base_tone = is_error ? vec3(1.0, 0.5, 0.5) : vec3(0.5, 1.0, 0.5);
 
diff --git a/coro.hpp b/coro.hpp
deleted file mode 100644
index 5c77063..0000000
--- a/coro.hpp
+++ /dev/null
@@ -1,106 +0,0 @@
-#pragma once
-#include <concepts>
-#include <coroutine>
-#include <exception>
-#include <assert.h>
-
-
-enum TaskStates {
-  STARTED, AWAIT, YIELD,
-  EXCEPTION, RETURN,
-  RETURN_VOID, DEAD
-};
-
-template<typename T>
-struct Task {
-  struct promise_type;
-
-  using handle_type = std::coroutine_handle<promise_type>;
-
-  struct promise_type {
-    T value_;
-    std::exception_ptr exception_;
-    TaskStates state_{STARTED};
-
-    Task get_return_object() {
-      return Task(handle_type::from_promise(*this));
-    }
-
-    std::suspend_always initial_suspend() {
-      state_ = AWAIT;
-      return {};
-    }
-
-    std::suspend_always final_suspend() noexcept {
-      return {};
-    }
-
-    void unhandled_exception() {
-      state_ = EXCEPTION;
-      exception_ = std::current_exception();
-    }
-
-    template<std::convertible_to<T> From> // C++20 concept
-    void return_value(From &&from) {
-      state_ = RETURN;
-      value_ = std::forward<From>(from);
-    }
-
-    template<std::convertible_to<T> From> // C++20 concept
-    std::suspend_always yield_value(From &&from) {
-      state_ = YIELD;
-      value_ = std::forward<From>(from);
-      return {};
-    }
-
-    void return_void() {
-      state_ = RETURN_VOID;
-    }
-  };
-
-  handle_type h_;
-
-  Task() {
-  }
-
-  Task(handle_type h) : h_(h) {
-  }
-
-  Task(const Task &t) : h_(t.h_) {
-  }
-
-  void destroy() {
-    // this should make it safe to clal repeatedly
-    if(h_.promise().state_ != DEAD) {
-      h_.destroy();
-      h_.promise().state_ = DEAD;
-    }
-  }
-
-  T operator()() {
-    assert(!h_.done());
-    call();
-    return std::move(h_.promise().value_);
-  }
-
-  bool done() {
-    return h_.done();
-  }
-
-  TaskStates state() {
-    return h_.promise().state_;
-  }
-
-  private:
-
-  void call() {
-    h_();
-
-    if (h_.promise().exception_) {
-      std::rethrow_exception(h_.promise().exception_);
-    }
-  }
-};
-
-struct Pass : std::suspend_always {
-};
diff --git a/gui.cpp b/gui.cpp
index 0bae0d8..7e5e3bd 100644
--- a/gui.cpp
+++ b/gui.cpp
@@ -78,6 +78,7 @@ void GUI::main_loop() {
 
 void GUI::build_success() {
   $hit_error = false;
+  configure_status_shader(1, $hit_error);
   $gui.show_sprite("face", "build_success");
   sound::stop("building");
   sound::play("build_success");
@@ -86,6 +87,7 @@ void GUI::build_success() {
 
 void GUI::build_failed(bool play_sound, const string &command) {
   $hit_error = true;
+  configure_status_shader(1, $hit_error);
   $gui.show_sprite("face", "build_failed");
   sound::stop("building");
 
@@ -96,9 +98,13 @@ void GUI::build_failed(bool play_sound, const string &command) {
   output(fmt::format("!!! BUILD FAILED. Your command correct? '{}'", command));
 }
 
-void GUI::configure_status_shader(size_t line_length, bool is_error) {
+void GUI::configure_status_shader(int speedup, bool is_error) {
   auto& effect = $gui.get<guecs::Effect>($log);
-  effect.$shader->setUniform("line_length", (int)line_length);
+
+  if(speedup > 0) {
+    effect.$shader->setUniform("speedup", speedup);
+  }
+
   if(!$hit_error && is_error) {
     $hit_error = is_error;
   }
@@ -108,7 +114,7 @@ void GUI::configure_status_shader(size_t line_length, bool is_error) {
 }
 
 void GUI::update_status(GameEngine &game, size_t line_length, bool is_error) {
-  configure_status_shader(line_length, is_error);
+  configure_status_shader(line_length * 0, is_error);
 
   $status = fmt::format(L"HP {}\nRounds {}\nStreaks {}\nDeaths {}",
       game.hit_points, game.rounds,
@@ -119,6 +125,7 @@ void GUI::update_status(GameEngine &game, size_t line_length, bool is_error) {
 }
 
 void GUI::you_died() {
+  configure_status_shader(0, $hit_error);
   $gui.show_sprite("face", "you_died");
   sound::stop("building");
   sound::play("you_died");
@@ -128,6 +135,7 @@ void GUI::you_died() {
 
 void GUI::building() {
   $hit_error = false;
+  configure_status_shader(20, $hit_error);
   $gui.show_sprite("face", "building");
   output("############# START ############");
   output(">>>> Will it Build?");
diff --git a/gui.hpp b/gui.hpp
index d5c2593..8362006 100644
--- a/gui.hpp
+++ b/gui.hpp
@@ -24,7 +24,7 @@ class GUI {
 
   void output(const string msg);
   void update_status(GameEngine &game, size_t line_length, bool is_error);
-  void configure_status_shader(size_t line_length, bool is_error);
+  void configure_status_shader(int speedup, bool is_error);
 
   void startup();
   bool is_open() { return $window.isOpen(); }