Refactored the GUECS system to have its own namespace then got Meter to work.

guecs.hpp

@@ -0,0 +1,91 @@
+#pragma once
+#include "color.hpp"
+#include "dinkyecs.hpp"
+#include "lel.hpp"
+#include <string>
+#include <memory>
+#include <SFML/Graphics.hpp>
+#include "texture.hpp"
+
+namespace guecs {
+  using std::shared_ptr, std::make_shared;
+
+  struct Textual {
+    std::string label;
+    shared_ptr<sf::Font> font = nullptr;
+    shared_ptr<sf::Text> text = nullptr;
+
+    void init(lel::Cell &cell, shared_ptr<sf::Font> font_ptr) {
+      font = font_ptr;
+      text = make_shared<sf::Text>(*font, label);
+
+      auto bounds = text->getLocalBounds();
+      auto text_cell = lel::center(bounds.size.x, bounds.size.y, cell);
+      // this stupid / 2 is because SFML renders from baseline rather than from the claimed bounding box
+      text->setPosition({float(text_cell.x), float(text_cell.y) - text_cell.h / 2});
+    }
+  };
+
+  struct Clickable {
+    int event = 0;
+  };
+
+  struct Sprite {
+    std::string name;
+    std::shared_ptr<sf::Sprite> sprite = nullptr;
+    std::shared_ptr<sf::Texture> texture = nullptr;
+  };
+
+  struct Rectangle {
+    shared_ptr<sf::RectangleShape> shape = nullptr;
+
+    void init(lel::Cell& cell) {
+      sf::Vector2f size{(float)cell.w, (float)cell.h};
+      if(shape == nullptr) shape = make_shared<sf::RectangleShape>(size);
+      shape->setPosition({float(cell.x + 3), float(cell.y + 3)});
+      shape->setSize({float(cell.w - 6), float(cell.h - 6)});
+      shape->setFillColor(ColorValue::DARK_MID);
+      shape->setOutlineColor(ColorValue::MID);
+      shape->setOutlineThickness(1);
+    }
+  };
+
+  struct Meter {
+    float percent = 1.0f;
+    Rectangle bar;
+
+    void init(lel::Cell& cell) {
+      bar.init(cell);
+    }
+  };
+
+  struct CellName {
+    std::string name;
+  };
+
+  class UI {
+    public:
+      DinkyECS::World $world;
+      shared_ptr<sf::Font> $font = nullptr;
+      lel::Parser $parser;
+      std::string $grid = "";
+
+      UI();
+
+      void position(int x, int y, int width, int height);
+      void layout(std::string grid);
+      DinkyECS::Entity entity(std::string name);
+
+      inline lel::CellMap& cells() {
+        return $parser.cells;
+      }
+
+      inline DinkyECS::World& world() {
+        return $world;
+      }
+
+      void init(TexturePack& textures);
+      void render(sf::RenderWindow& window);
+      void mouse(sf::RenderWindow &window);
+  };
+}