A bit more source refactoring.

sfmlbackend.cpp

@@ -0,0 +1,171 @@
+#include "imgui.h"
+#include "imgui-SFML.h"
+#define _USE_MATH_DEFINES
+#include <math.h>
+#include <fmt/core.h>
+#include <SFML/Graphics/Texture.hpp>
+#include <SFML/Graphics/RectangleShape.hpp>
+#include <SFML/Graphics/CircleShape.hpp>
+#include <SFML/Graphics/Text.hpp>
+#include <SFML/Audio.hpp>
+#include <SFML/Window/Event.hpp>
+#include "sfmlbackend.hpp"
+
+using namespace ImGui;
+using std::string;
+
+void SFMLBackend::ImGui_setup() {
+  bool res = SFML::Init(window);
+  fmt::println("IMGUI returned {}", res);
+}
+
+void SFMLBackend::ImGui_update() {
+  sf::Vector2u size = window.getSize();
+
+  SFML::Update(window, deltaClock.restart());
+
+  SetNextWindowPos(ImVec2(0, 0));
+  SetNextWindowSize(ImVec2(size.x, size.y));
+
+  Begin("Build Status", &window_active_out);
+
+  TextColored(ImVec4(1,1,0,1), "Build Log");
+  BeginChild("Scrolling");
+  for(string &line : log) {
+    TextWrapped(line.c_str());
+  }
+  EndChild();
+  End();
+}
+
+void SFMLBackend::Window_update() {
+    if(show_build_log) {
+      SFML::Render(window);
+    }
+    window.display();
+}
+
+void SFMLBackend::handle_events() {
+  sf::Event event;
+
+  // is this a main event loop
+  while (window.pollEvent(event)) {
+    if(show_build_log) {
+      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::Escape)) {
+          if(show_build_log) {
+            window_active_out = false;
+          } else {
+            window.close();
+          }
+        } else if(sf::Keyboard::isKeyPressed(sf::Keyboard::Space)) {
+          window_active_out = !window_active_out;
+        }
+        break;
+      default:
+        // do nothing
+        break;
+    }
+  }
+}
+
+sf::Vector2f translate(int x, int y) {
+  float step_x = X_DIM / TEXT_SIZE;
+  float step_y = (Y_DIM - 12) / TEXT_SIZE;
+
+  sf::Vector2f position{step_x * x, step_y * y * 2};
+
+  return position;
+}
+
+
+void SFMLBackend::write_text(int x, int y, string content) {
+  sf::Vector2f position = translate(x,y);
+  sf::Text text;
+  text.setFont(font);
+  text.setString(content);
+  text.setCharacterSize(TEXT_SIZE);
+  text.setFillColor(sf::Color(100, 250, 50));
+  text.setPosition(position);
+  window.draw(text);
+}
+
+void SFMLBackend::update_entities() {
+  window.clear();
+
+  sf::RectangleShape face_box(translate(X_ROWS/4, Y_LINES/2));
+  face_box.setPosition(translate(X_ROWS/3+2,2));
+  face_box.setOutlineColor(sf::Color(50, 200, 25));
+  face_box.setOutlineThickness(10);
+  face_box.setFillColor(sf::Color(200, 250, 200));
+  window.draw(face_box);
+
+  constexpr int hp_box_len = 44;
+
+  int current_hp = (float(game.hit_points) / float(game.starting_hp)) * float(hp_box_len);
+
+  sf::RectangleShape hp_bar(translate(current_hp,2));
+  hp_bar.setPosition(translate(2,21));
+  hp_bar.setFillColor(sf::Color(100, 250, 50));
+  window.draw(hp_bar);
+
+  sf::RectangleShape hp_box(translate(hp_box_len,2));
+  hp_box.setPosition(translate(2,21));
+  hp_box.setOutlineColor(sf::Color(100, 200, 50));
+  hp_box.setOutlineThickness(10);
+  hp_box.setFillColor(sf::Color::Transparent);
+  window.draw(hp_box);
+
+  string status = fmt::format("HP {} Rounds {}  Streaks {}  Deaths XXX", game.hit_points, game.rounds, game.streak);
+  write_text(2, 18, status);
+
+  if(show_build_log) {
+    ImGui_update();
+  }
+  Window_update();
+
+  show_build_log = window_active_out;
+}
+
+SFMLBackend::SFMLBackend(GameEngine &g) : window(sf::VideoMode(X_DIM, Y_DIM), "Turing's Tarpit", sf::Style::None, settings), game(g)
+{
+
+}
+
+void SFMLBackend::update_log(std::vector<string> &lines) {
+  log.clear();
+  for(string &line : lines) {
+    log.push_back(line);
+  }
+}
+
+void SFMLBackend::startup() {
+  fmt::print("Setting up a window for you...\n");
+  settings.antialiasingLevel = 8;
+
+  if(!font.loadFromFile("./assets/text.ttf")) {
+    fmt::println("Cannot load font.");
+  }
+
+  window.setPosition({.x=0,.y=0});
+
+  window.setFramerateLimit(FPS);
+  window.setVerticalSyncEnabled(true);
+  ImGui_setup();
+}
+
+bool SFMLBackend::is_open() {
+  return window.isOpen();
+}
+
+void SFMLBackend::shutdown() {
+  SFML::Shutdown();
+}