[APP] Refactor: extract main into GameApplication

src/GameApplication.cpp

@@ -0,0 +1,70 @@
+#include "GameApplication.h"
+
+#include <cmath>
+#include <SFML/Graphics.hpp>
+
+GameApplication::GameApplication()
+{
+}
+
+void GameApplication::run()
+{
+    // no aliasing
+    sf::ContextSettings settings;
+    settings.antialiasingLevel = 0;
+
+    // windowed 720p. no resize
+    sf::RenderWindow window(sf::VideoMode(1280, 720), "Game", sf::Style::Close, settings);
+
+    // 60 FPS, no vsync
+    window.setFramerateLimit(60);
+
+    // grass rectangle (goes beyond the bottom of the screen on start to allow camera motion on Y)
+    sf::RectangleShape grass({1280.f, 400.f});
+    grass.setFillColor(sf::Color::Green);
+    grass.setPosition(0.f, 420.f);
+
+    // camera view
+    sf::View view;
+    view.setCenter({1280.f * 0.5f, 720.f * 0.5f});
+    view.setSize({1280.f, 720.f});
+
+    // time management
+    sf::Clock clock;
+    sf::Time time;
+
+    while (window.isOpen())
+    {
+        // Time check
+        sf::Time elapsedTime = clock.restart();
+        time += elapsedTime;
+        if (time.asSeconds() > 1000 * 1000)
+        {
+            time = sf::Time::Zero;
+        }
+
+        // Event handling
+        sf::Event event;
+        while (window.pollEvent(event))
+        {
+            if (event.type == sf::Event::Closed ||
+                (event.type == sf::Event::KeyPressed && event.key.code == sf::Keyboard::Escape))
+            {
+                window.close();
+            }
+        }
+
+        // move camera
+        view.move(0.f, std::sin(time.asSeconds()) * 50.f * elapsedTime.asSeconds());
+
+        // clear sky
+        window.clear(sf::Color::Cyan);
+
+        // show grass with moving camera
+        window.setView(view);
+        window.draw(grass);
+
+        // flip
+        window.display();
+    }
+}

src/GameApplication.h

@@ -0,0 +1,14 @@
+#pragma once
+
+/// Game Application. Handles game loop.
+class GameApplication
+{
+public:
+    GameApplication();
+
+    GameApplication(const GameApplication&) = delete;
+    GameApplication& operator=(const GameApplication&) = delete;
+
+public:
+    void run();
+};

src/main.cpp

@@ -1,67 +1,9 @@
-#include <SFML/Graphics.hpp>
-#include <iostream>
-#include <cmath>
+#include "GameApplication.h"
 
 int main(int argc, char const *argv[])
 {
-    // no aliasing
-    sf::ContextSettings settings;
-    settings.antialiasingLevel = 0;
-
-    // windowed 720p. no resize
-    sf::RenderWindow window(sf::VideoMode(1280, 720), "Game", sf::Style::Close, settings);
-
-    // 60 FPS, no vsync
-    window.setFramerateLimit(60);
-
-    // grass rectangle (goes beyond the bottom of the screen on start to allow camera motion on Y)
-    sf::RectangleShape grass({1280.f, 400.f});
-    grass.setFillColor(sf::Color::Green);
-    grass.setPosition(0.f, 420.f);
-
-    // camera view
-    sf::View view;
-    view.setCenter({1280.f * 0.5f, 720.f * 0.5f});
-    view.setSize({1280.f, 720.f});
-
-    // time management
-    sf::Clock clock;
-    sf::Time time;
-
-    while (window.isOpen())
-    {
-        // Time check
-        sf::Time elapsedTime = clock.restart();
-        time += elapsedTime;
-        if (time.asSeconds() > 1000 * 1000)
-        {
-            time = sf::Time::Zero;
-        }
-
-        // Event handling
-        sf::Event event;
-        while (window.pollEvent(event))
-        {
-            if (event.type == sf::Event::Closed ||
-                (event.type == sf::Event::KeyPressed && event.key.code == sf::Keyboard::Escape))
-            {
-                window.close();
-            }
-        }
-
-        // move camera
-        view.move(0.f, std::sin(time.asSeconds()) * 50.f * elapsedTime.asSeconds());
-
-        // clear sky
-        window.clear(sf::Color::Cyan);
-
-        // show grass with moving camera
-        window.setView(view);
-        window.draw(grass);
-
-        // flip
-        window.display();
-    }
+    GameApplication gameApp;
+    gameApp.run();
 
     return 0;
 }