First cut of pulling out the relevant parts of my original game to make a little framework.

src/gui/fsm.hpp

@@ -0,0 +1,73 @@
+#pragma once
+
+#include "constants.hpp"
+#include "algos/simplefsm.hpp"
+#include "gui/debug_ui.hpp"
+#include "gui/main_ui.hpp"
+#include "gui/status_ui.hpp"
+#include "gui/loot_ui.hpp"
+#include "gui/map_view.hpp"
+#include "events.hpp"
+#include "gui/event_router.hpp"
+#include "gui/dnd_loot.hpp"
+#include "events.hpp"
+
+namespace gui {
+  enum class State {
+    START=__LINE__,
+    MOVING=__LINE__,
+    IN_COMBAT=__LINE__,
+    COMBAT_ROTATE=__LINE__,
+    ATTACKING=__LINE__,
+    ROTATING=__LINE__,
+    LOOTING=__LINE__,
+    IDLE=__LINE__,
+    END=__LINE__,
+  };
+
+  class FSM : public DeadSimpleFSM<State, game::Event> {
+    public:
+      sf::RenderWindow $window;
+      bool $draw_stats = false;
+      bool autowalking = false;
+      bool $map_open = false;
+      DebugUI $debug_ui;
+      MainUI $main_ui;
+      StatusUI $status_ui{STATUS_UI_X, STATUS_UI_Y, STATUS_UI_WIDTH, STATUS_UI_HEIGHT};
+      MapViewUI $map_ui;
+      LootUI $loot_ui;
+      gui::routing::Router $router;
+      DNDLoot $dnd_loot;
+
+      FSM();
+
+      void event(game::Event ev, std::any data={});
+      void autowalk();
+      void start_autowalk(double rot_speed);
+
+      void START(game::Event ev);
+      void MOVING(game::Event ev);
+      void ATTACKING(game::Event ev, std::any data);
+      void MAPPING(game::Event ev);
+      void ROTATING(game::Event ev);
+      void IDLE(game::Event ev, std::any data);
+      void IN_COMBAT(game::Event ev);
+      void COMBAT_ROTATE(game::Event ev);
+      void LOOTING(game::Event ev, std::any data);
+      void END(game::Event ev);
+
+      void try_move(int dir, bool strafe);
+      sf::Vector2f mouse_position();
+      void mouse_action(guecs::Modifiers mods);
+      void handle_keyboard_mouse();
+      void draw_gui();
+      void update();
+      void render();
+      bool active();
+      void run_systems();
+      void handle_world_events();
+      void next_level();
+      void debug_render();
+      void take_screenshot();
+  };
+}