Now have a simple camera system that I can configure in json for different motion effects.

camera.cpp

@@ -0,0 +1,56 @@
+#include "camera.hpp"
+#include <fmt/core.h>
+#include "animation.hpp"
+#include <unordered_map>
+#include "components.hpp"
+#include "config.hpp"
+
+namespace cinematic {
+  using components::Animation, std::string;
+
+  struct CameraManager {
+    std::unordered_map<string, Animation> animations;
+  };
+
+  static CameraManager MGR;
+  static bool initialized = false;
+
+  void init() {
+    if(!initialized) {
+      auto cameras = settings::get("cameras");
+      for(auto &[name, data] : cameras.json().items()) {
+        auto anim = components::convert<Animation>(data);
+        MGR.animations.try_emplace(name, anim);
+      }
+
+      initialized = true;
+    }
+  }
+
+  Camera::Camera() :
+    anim(MGR.animations.at("pan"))
+  {
+  }
+
+  void Camera::resize(sf::Vector2f to) {
+    size = to;
+  }
+
+  void Camera::style(const std::string &name) {
+    anim = MGR.animations.at(name);
+  }
+
+  void Camera::move(sf::RenderTexture& target, sf::Vector2f pos) {
+    sf::View zoom;
+    anim.apply(zoom, pos, size);
+    target.setView(zoom);
+  }
+
+  bool Camera::playing() {
+    return anim.playing;
+  }
+
+  void Camera::play() {
+    anim.play();
+  }
+}