Now have a simple storyboard system that can display an image and move with the camera to different cells.

storyboard/ui.hpp

@@ -0,0 +1,25 @@
+#pragma once
+#include "constants.hpp"
+#include <guecs/ui.hpp>
+#include "camera.hpp"
+
+namespace storyboard {
+
+  struct UI {
+    guecs::UI $ui;
+    sf::RenderTexture $view_texture;
+    sf::Sprite $view_sprite;
+    cinematic::Camera $camera;
+    std::string $zoom_target;
+    bool zoomed = false;
+
+    UI();
+
+    void init();
+    void render(sf::RenderWindow &window);
+    bool mouse(float x, float y, guecs::Modifiers mods);
+    void zoom(const std::string &cell_name);
+    void reset();
+  };
+
+}