Initial ideas

src/game/depth_renderer.cpp

@@ -0,0 +1,14 @@
+#include "depth_renderer.hpp"
+
+void DepthRenderer::addGameObject(const std::shared_ptr<GameObject>& gameObject)
+{
+    // TODO: Subscribe to depth changes!
+    gameObjects.insert(gameObject);
+}
+
+void DepthRenderer::render(const std::shared_ptr<sf::RenderWindow> &window) const
+{
+    for (const auto& gameObject : gameObjects) {
+        gameObject->draw(window.get());
+    }
+}

src/game/depth_renderer.hpp

@@ -0,0 +1,24 @@
+#ifndef HOLESOME_DEPTH_RENDERER_HPP
+#define HOLESOME_DEPTH_RENDERER_HPP
+
+
+#include <set>
+#include "game_object.h"
+
+auto compareGameObjectDepth = [](const std::shared_ptr<GameObject>& a, const std::shared_ptr<GameObject>& b) { return a->coordinates->isometric().depth < b->coordinates->isometric().depth; };
+
+class DepthRenderer
+{
+public:
+    DepthRenderer() = default;
+
+    void addGameObject(const std::shared_ptr<GameObject>& gameObject);
+
+    void render(const std::shared_ptr<sf::RenderWindow>& window) const;
+
+private:
+    std::multiset<std::shared_ptr<GameObject>, decltype(compareGameObjectDepth)> gameObjects;
+};
+
+
+#endif //HOLESOME_DEPTH_RENDERER_HPP