Have a basic understanding of what to do for the boss fight arena, but now want to start over fresh.

boss/ui.hpp

@@ -0,0 +1,20 @@
+#pragma once
+#include "dinkyecs.hpp"
+#include <memory>
+#include <SFML/Graphics/RenderWindow.hpp>
+#include <guecs/ui.hpp>
+
+namespace boss {
+  using std::shared_ptr;
+  using namespace DinkyECS;
+
+  struct UI {
+
+    UI(shared_ptr<World> world, Entity boss_id);
+
+    void init();
+    void render(sf::RenderWindow& window);
+    bool mouse(float x, float y, guecs::Modifiers mods);
+    bool boss_dead();
+  };
+}