Preparing for more cleaned up design but that'll involve finally learning C++ again since I will want to make a class or struct to hold game state and other things.

sfmldemo/main.cpp

@@ -70,49 +70,8 @@ struct BoxTest Box2d_setup(b2World &world) {
   return box;
 }
 
-int main() {
-  fmt::print("Setting up a window for you...\n");
-  sf::ContextSettings settings;
-  settings.antialiasingLevel = 8;
-
-  sf::RenderWindow window(sf::VideoMode(1920, 1080), "Simple Game Demo", sf::Style::Default, settings);
-
-  // window.setFramerateLimit(60);
-  window.setVerticalSyncEnabled(true);
-
-  ImGui_setup(window);
 
-  sf::CircleShape shape(50.f, 4);
+void Handle_events(sf::RenderWindow &window, BoxTest &box) {
-  sf::Vector2u winSize = window.getSize();
-  shape.setPosition(winSize.x / 2, winSize.y / 2);
-  shape.setOrigin(50.f, 50.f);
-  shape.setFillColor(sf::Color(150, 50, 250));
-  shape.setOutlineThickness(10.f);
-  shape.setOutlineColor(sf::Color(250, 150, 100));
-
-  sf::Clock deltaClock;
-  sf::Clock clock;
-  sf::Time tick = clock.getElapsedTime();
-
-  // very cool, c++11 lambdas doing a 1 second slept thread
-  sf::Thread thread([](){
-    for(int i = 0; i < 10; i++) {
-      fmt::print("I'm a thread. {}\n", i);
-      sf::sleep(sf::seconds(1));
-    }
-  });
-
-  thread.launch();
-
-  b2Vec2 gravity(0.0f, -10.0f);
-  b2World world(gravity);
-  BoxTest box = Box2d_setup(world);
-
-  float timeStep = 1.0f / 60.0f;
-  int velocityIterations = 6;
-  int positionIterations = 2;
-
-  while (window.isOpen()) {
   sf::Event event;
 
   // is this a main event loop
@@ -124,7 +83,6 @@ int main() {
       case sf::Event::Closed:
         fmt::print("Exiting...\n");
         window.close();
-          thread.terminate();
         break;
       case sf::Event::KeyPressed:
         if(sf::Keyboard::isKeyPressed(sf::Keyboard::Left)) {
@@ -148,13 +106,15 @@ int main() {
         break;
     }
   }
+}
 
-
+sf::Time Update_entities(sf::RenderWindow &window, b2World &world, sf::Clock &clock, sf::Clock &deltaClock, sf::Time &tick, BoxTest &box,  sf::Shape &shape) {
-    // should this move up to the pollEvent loop?
+  sf::Vector2u winSize = window.getSize();
+  float timeStep = 1.0f / 60.0f;
+  int velocityIterations = 6;
+  int positionIterations = 2;
   sf::Time since = clock.getElapsedTime();
-    if(since - tick > sf::seconds(1)) {
+  sf::Time nextTick = since - tick > sf::seconds(1) ? since : tick;
-      tick = since;
-    }
 
   world.Step(timeStep, velocityIterations, positionIterations);
   b2Vec2 position = box.body->GetPosition();
@@ -163,9 +123,48 @@ int main() {
   shape.setPosition(position.x * 100.0f, winSize.y - position.y * 100.0f);
   shape.setRotation(angle * 180.0f / M_PI);
 
-
   ImGui_update(window, deltaClock, tick);
   Window_update(window, shape);
+
+  return nextTick;
+}
+
+
+sf::CircleShape Create_player(sf::RenderWindow &window) {
+  sf::CircleShape shape(50.f, 4);
+  sf::Vector2u winSize = window.getSize();
+  shape.setPosition(winSize.x / 2, winSize.y / 2);
+  shape.setOrigin(50.f, 50.f);
+  shape.setFillColor(sf::Color(150, 50, 250));
+  shape.setOutlineThickness(10.f);
+  shape.setOutlineColor(sf::Color(250, 150, 100));
+
+  return shape;
+}
+
+int main() {
+  fmt::print("Setting up a window for you...\n");
+  sf::ContextSettings settings;
+  settings.antialiasingLevel = 8;
+  sf::RenderWindow window(sf::VideoMode(1920, 1080), "Simple Game Demo", sf::Style::Default, settings);
+  window.setFramerateLimit(60);
+  window.setVerticalSyncEnabled(true);
+  ImGui_setup(window);
+
+  sf::Clock deltaClock;
+  sf::Clock clock;
+  sf::Time tick = clock.getElapsedTime();
+
+  sf::CircleShape shape = Create_player(window);
+
+  b2Vec2 gravity(0.0f, -10.0f);
+  b2World world(gravity);
+  BoxTest box = Box2d_setup(world);
+
+  while (window.isOpen()) {
+    Handle_events(window, box);
+    // preparing for refactoring this into a class or struct for everything
+    tick = Update_entities(window, world, clock, deltaClock, tick, box, shape);
   }
 
   ImGui::SFML::Shutdown();