Super jank clock in ImGUI to learn the SFML time keeping functions.

sfmldemo/main.cpp

@@ -7,26 +7,50 @@
 #include <SFML/System/Clock.hpp>
 #include <SFML/Window/Event.hpp>
 
-int main() {
-  fmt::print("Setting up a window for you...\n");
-
-  sf::RenderWindow window(sf::VideoMode(1920, 1080), "ImGui + SFML = <3");
-  // window.setFramerateLimit(60);
-  window.setVerticalSyncEnabled(true);
+void ImGui_setup(sf::RenderWindow &window) {
   int res = ImGui::SFML::Init(window);
   if(res == 1) {
     fmt::print("ImGui returned result {}\n", res);
   } else {
     fmt::print("ImGui returned an error code={}\n", res);
-    return -1;
   }
+}
+
+void ImGui_update(sf::RenderWindow &window, sf::Clock &deltaClock, sf::Time &tick) {
+  ImGui::SFML::Update(window, deltaClock.restart());
+  ImGui::ShowDemoWindow();
+  ImGui::Begin("Hello, world!");
+
+  std::string msg = fmt::format("Time: {}\n", tick.asSeconds());
+  ImGui::Button(msg.c_str());
+  ImGui::End();
+}
+
+void Window_update(sf::RenderWindow &window, sf::Shape &shape) {
+    window.clear();
+    window.draw(shape);
+    ImGui::SFML::Render(window);
+    window.display();
+}
+
+int main() {
+  fmt::print("Setting up a window for you...\n");
+
+  sf::RenderWindow window(sf::VideoMode(1920, 1080), "ImGui + SFML = <3");
+  // window.setFramerateLimit(60);
+  window.setVerticalSyncEnabled(true);
+
+  ImGui_setup(window);
 
   sf::CircleShape shape(100.f);
   shape.setFillColor(sf::Color::Green);
-
   sf::Clock deltaClock;
+  sf::Clock clock;
+  sf::Time tick = clock.getElapsedTime();
+
   while (window.isOpen()) {
     sf::Event event;
+
     while (window.pollEvent(event)) {
       ImGui::SFML::ProcessEvent(window, event);
 
@@ -36,18 +60,13 @@ int main() {
       }
     }
 
-    ImGui::SFML::Update(window, deltaClock.restart());
-
-    ImGui::ShowDemoWindow();
-
-    ImGui::Begin("Hello, world!");
-    ImGui::Button("Look at this pretty button");
-    ImGui::End();
+    sf::Time since = clock.getElapsedTime();
+    if(since - tick > sf::seconds(1)) {
+      tick = since;
+    }
 
-    window.clear();
-    window.draw(shape);
-    ImGui::SFML::Render(window);
-    window.display();
+    ImGui_update(window, deltaClock, tick);
+    Window_update(window, shape);
   }
 
   ImGui::SFML::Shutdown();