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

@@ -70,18 +70,67 @@ 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);
+void Handle_events(sf::RenderWindow &window, BoxTest &box) {
+  sf::Event event;
+
+  // is this a main event loop
+  while (window.pollEvent(event)) {
+    ImGui::SFML::ProcessEvent(window, event);
+
+    switch(event.type) {
+
+      case sf::Event::Closed:
+        fmt::print("Exiting...\n");
+        window.close();
+        break;
+      case sf::Event::KeyPressed:
+        if(sf::Keyboard::isKeyPressed(sf::Keyboard::Left)) {
+          b2Vec2 force(-200, 1000);
+          box.body->ApplyForceToCenter(force, true);
+        } else if(sf::Keyboard::isKeyPressed(sf::Keyboard::Right)) {
+          b2Vec2 force(200, 1000);
+          box.body->ApplyForceToCenter(force, true);
+        }
+        break;
+      case sf::Event::MouseButtonPressed:
+        if(sf::Mouse::isButtonPressed(sf::Mouse::Left)) {
+          b2Vec2 force(-200, 1000);
+          box.body->ApplyForceToCenter(force, true);
+          box.body->ApplyTorque(100.0f, true);
+        } else if (sf::Mouse::isButtonPressed(sf::Mouse::Right)) {
+          b2Vec2 force(200, 1000);
+          box.body->ApplyForceToCenter(force, true);
+          box.body->ApplyTorque(-100.0f, true);
+        }
+        break;
+    }
+  }
+}
 
-  // window.setFramerateLimit(60);
-  window.setVerticalSyncEnabled(true);
+sf::Time Update_entities(sf::RenderWindow &window, b2World &world, sf::Clock &clock, sf::Clock &deltaClock, sf::Time &tick, BoxTest &box,  sf::Shape &shape) {
+  sf::Vector2u winSize = window.getSize();
+  float timeStep = 1.0f / 60.0f;
+  int velocityIterations = 6;
+  int positionIterations = 2;
+  sf::Time since = clock.getElapsedTime();
+  sf::Time nextTick = since - tick > sf::seconds(1) ? since : tick;
 
-  ImGui_setup(window);
+  world.Step(timeStep, velocityIterations, positionIterations);
+  b2Vec2 position = box.body->GetPosition();
+  float angle = box.body->GetAngle();
 
+  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);
@@ -90,82 +139,32 @@ int main() {
   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();
 
-  // 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();
+  sf::CircleShape shape = Create_player(window);
 
   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
-    while (window.pollEvent(event)) {
-      ImGui::SFML::ProcessEvent(window, event);
-
-      switch(event.type) {
-
-        case sf::Event::Closed:
-          fmt::print("Exiting...\n");
-          window.close();
-          thread.terminate();
-          break;
-        case sf::Event::KeyPressed:
-          if(sf::Keyboard::isKeyPressed(sf::Keyboard::Left)) {
-            b2Vec2 force(-200, 1000);
-            box.body->ApplyForceToCenter(force, true);
-          } else if(sf::Keyboard::isKeyPressed(sf::Keyboard::Right)) {
-            b2Vec2 force(200, 1000);
-            box.body->ApplyForceToCenter(force, true);
-          }
-          break;
-        case sf::Event::MouseButtonPressed:
-          if(sf::Mouse::isButtonPressed(sf::Mouse::Left)) {
-            b2Vec2 force(-200, 1000);
-            box.body->ApplyForceToCenter(force, true);
-            box.body->ApplyTorque(100.0f, true);
-          } else if (sf::Mouse::isButtonPressed(sf::Mouse::Right)) {
-            b2Vec2 force(200, 1000);
-            box.body->ApplyForceToCenter(force, true);
-            box.body->ApplyTorque(-100.0f, true);
-          }
-          break;
-      }
-    }
-
-
-    // should this move up to the pollEvent loop?
-    sf::Time since = clock.getElapsedTime();
-    if(since - tick > sf::seconds(1)) {
-      tick = since;
-    }
-
-    world.Step(timeStep, velocityIterations, positionIterations);
-    b2Vec2 position = box.body->GetPosition();
-    float angle = box.body->GetAngle();
-
-    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);
+    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();