Now have a body damage UI to show damage to each body part.

src/gui/body_ui.hpp

@@ -0,0 +1,18 @@
+#pragma once
+#include "constants.hpp"
+#include <deque>
+#include "graphics/textures.hpp"
+#include <guecs/ui.hpp>
+#include "gui/guecstra.hpp"
+
+namespace gui {
+  class BodyUI {
+    public:
+      guecs::UI $gui{};
+
+      void init(size_t x, size_t y, size_t width, size_t height);
+      void render(sf::RenderWindow &window);
+      void update();
+      bool mouse(float x, float y, guecs::Modifiers mods);
+  };
+}