feat: initial commit

src/main.cpp

@@ -0,0 +1,89 @@
+#include <SFML/Graphics.hpp>
+#include <SFML/Graphics/RectangleShape.hpp>
+#include <SFML/System/Clock.hpp>
+#include <SFML/System/String.hpp>
+#include <SFML/System/Vector2.hpp>
+#include <SFML/Window/Cursor.hpp>
+#include <SFML/Window/Mouse.hpp>
+#include <SFML/Window/Window.hpp>
+
+constexpr int DEBUG_REFRESH_RATE_IN_MS = 250;
+constexpr bool VSYNC = true;
+constexpr int WIDTH = 1920;
+constexpr int HEIGHT = 1080;
+
+void updateShapePosition(sf::RectangleShape &shape, sf::RenderWindow &window) {
+  if (!window.hasFocus())
+    return;
+
+  auto shapeSize = shape.getSize();
+  auto mousePos = sf::Mouse::getPosition(window);
+
+  shape.setPosition(
+      sf::Vector2f(mousePos.x - shapeSize.x / 2, window.getSize().y - 50));
+}
+
+std::string getDebugText(double elapsedMilliseconds) {
+  if (elapsedMilliseconds <= 0)
+    return "";
+
+  return "V-SYNC: " + std::string(VSYNC ? "On" : "Off") +
+         "\nFrametime: " + std::to_string(elapsedMilliseconds) +
+         "\nFPS: " + std::to_string((int)(1000 / elapsedMilliseconds));
+}
+
+int main() {
+  sf::RenderWindow window(sf::VideoMode({WIDTH, HEIGHT}), "Whatever SFML");
+  window.setVerticalSyncEnabled(VSYNC);
+
+  sf::RectangleShape shape(sf::Vector2f(200, 25));
+  shape.setFillColor(sf::Color(100, 250, 50));
+  shape.setPosition(sf::Vector2f(0, HEIGHT - 50));
+
+  sf::Clock clock;
+
+  sf::Font font;
+  if (!font.openFromFile("assets/Consolas.ttf"))
+    return 0;
+
+  sf::Text text(font);
+  text.setString(getDebugText(0));
+
+  sf::View view;
+  view.setSize(sf::Vector2f(WIDTH, HEIGHT));
+  view.setCenter(sf::Vector2f((float)WIDTH / 2, (float)HEIGHT / 2));
+
+  double lastTextUpdateElapsedMs = 0;
+
+  while (window.isOpen()) {
+    while (const std::optional event = window.pollEvent()) {
+      if (event->is<sf::Event::Closed>()) {
+        window.close();
+        return 0;
+      } else if (event->is<sf::Event::Resized>()) {
+        auto size = window.getSize();
+        view.setSize(sf::Vector2f(size.x, size.y));
+        view.setCenter(sf::Vector2f((float)size.x / 2, (float)size.y / 2));
+      }
+    }
+
+    window.clear();
+    updateShapePosition(shape, window);
+    window.setView(view);
+    window.draw(shape);
+    window.draw(text);
+    window.display();
+
+    double elapsedMilliseconds =
+        (double)clock.restart().asMicroseconds() / 1000;
+
+    lastTextUpdateElapsedMs += elapsedMilliseconds;
+
+    if (lastTextUpdateElapsedMs > DEBUG_REFRESH_RATE_IN_MS) {
+      text.setString(getDebugText(elapsedMilliseconds));
+      lastTextUpdateElapsedMs = 0;
+    }
+  }
+
+  return 0;
+}