Incorporate the systems registry to make it easier to add/remove systems.

src/game/registry.hpp

@@ -0,0 +1,82 @@
+#pragma once
+
+#include <functional>
+#include "game/components.hpp"
+
+namespace System {
+  using MovingFunc = std::function<void(components::Position& move_to)>;
+  using CombatFunc = std::function<void(int attack_id)>;
+  using RenderFunc = std::function<void()>;
+  using UpdateFunc = std::function<void()>;
+  using UseItemFunc = std::function<void(const std::string& slot_name)>;
+  using PickupFunc = std::function<void()>;
+
+  struct Registry {
+    std::vector<MovingFunc> $moving;
+    std::vector<CombatFunc> $combat;
+    std::vector<RenderFunc> $render;
+    std::vector<UpdateFunc> $update;
+    std::vector<UseItemFunc> $use_item;
+    std::vector<PickupFunc> $pickup;
+
+    void addMoving(MovingFunc action) {
+      $moving.emplace_back(action);
+    }
+
+    void addCombat(CombatFunc action) {
+      $combat.emplace_back(action);
+    }
+
+    void addRender(RenderFunc action) {
+      $render.emplace_back(action);
+    }
+
+    void addUpdate(UpdateFunc action) {
+      $update.emplace_back(action);
+    }
+
+    void addUseItem(UseItemFunc action) {
+      $use_item.emplace_back(action);
+    }
+
+    void addPickup(PickupFunc action) {
+      $pickup.emplace_back(action);
+    }
+
+    void runMoving(components::Position move_to) {
+      for(auto func : $moving) {
+        func(move_to);
+      }
+    }
+
+    void runCombat(int attack_id) {
+      for(auto func : $combat) {
+        func(attack_id);
+      }
+    }
+
+    void runRender() {
+      for(auto func : $render) {
+        func();
+      }
+    }
+
+    void runUpdate() {
+      for(auto func : $update) {
+        func();
+      }
+    }
+
+    void runUseItem(const std::string& slot_name) {
+      for(auto func : $use_item) {
+        func(slot_name);
+      }
+    }
+
+    void runPickup() {
+      for(auto func : $pickup) {
+        func();
+      }
+    }
+  };
+}

src/game/systems.cpp

@@ -682,3 +682,18 @@ void System::spawn_attack(World& world, int attack_id, DinkyECS::Entity enemy) {
 
   drop_item(effect_id);
 }
+
+void System::init(Registry& reg) {
+  reg.addRender(System::clear_attack);
+  reg.addUseItem(System::use_item);
+  reg.addMoving(System::move_player);
+  reg.addCombat(System::combat);
+  reg.addPickup(System::pickup);
+  reg.addUpdate(System::generate_paths);
+  reg.addUpdate(System::enemy_ai_initialize);
+  reg.addUpdate(System::enemy_pathing);
+  reg.addUpdate(System::motion);
+  reg.addUpdate(System::collision);
+  reg.addUpdate(System::lighting);
+  reg.addUpdate(System::death);
+}

src/game/systems.hpp

@@ -4,6 +4,7 @@
 #include "game/map.hpp"
 #include "algos/spatialmap.hpp"
 #include "game/level.hpp"
+#include "game/registry.hpp"
 
 namespace System {
   using namespace components;
@@ -70,4 +71,5 @@ namespace System {
 
   void clear_attack();
   void spawn_attack(World& world, int attack_id, DinkyECS::Entity enemy);
+  void init(Registry& reg);
 }

src/gui/fsm.cpp

@@ -27,6 +27,8 @@ namespace gui {
       $window.setVerticalSyncEnabled(VSYNC);
       if(FRAME_LIMIT) $window.setFramerateLimit(FRAME_LIMIT);
       $window.setPosition({0,0});
+      // BUG: I don't like this here
+      System::init($systems);
     }
 
   void FSM::event(Event ev, std::any data) {
@@ -67,7 +69,7 @@ namespace gui {
   void FSM::MOVING(Event ) {
     // this should be an optional that returns a point
     if(auto move_to = $main_ui.play_move()) {
-      System::move_player(*move_to);
+      $systems.runMoving(*move_to);
       run_systems();
       $main_ui.dirty();
       state(State::IDLE);
@@ -79,7 +81,7 @@ namespace gui {
     switch(ev) {
       case TICK: {
         dbc::log("!!!!!! FIX System::combat(0) doesn't use any weapons, only first");
-        System::combat(0);
+        $systems.runCombat(0);
         run_systems();
         state(State::IN_COMBAT);
        } break;
@@ -88,7 +90,7 @@ namespace gui {
         break;
       case ATTACK: {
         int attack_id = std::any_cast<int>(data);
-        System::combat(attack_id);
+        $systems.runCombat(attack_id);
         run_systems();
        } break;
       default:
@@ -193,7 +195,7 @@ namespace gui {
         auto gui_id = std::any_cast<guecs::Entity>(data);
         auto& slot_name = $status_ui.$gui.name_for(gui_id);
 
-        System::use_item(slot_name);
+        $systems.runUseItem(slot_name);
         $status_ui.update();
        } break;
       case MOUSE_CLICK:
@@ -203,7 +205,7 @@ namespace gui {
           mouse_action({1 << guecs::ModBit::hover});
        } break;
       case AIM_CLICK:
-        System::pickup();
+        $systems.runPickup();
         break;
       default:
         break; // ignore everything else
@@ -418,7 +420,7 @@ namespace gui {
       $boss_scene->render($window);
     } else {
       // this clears any attack animations, like fire
-      System::clear_attack();
+      $systems.runRender();
       // BUG: this is the render for this class, and where I add an update
       draw_gui();
     }
@@ -427,13 +429,7 @@ namespace gui {
   }
 
   void FSM::run_systems() {
-    System::generate_paths();
-    System::enemy_ai_initialize();
-    System::enemy_pathing();
-    System::motion();
-    System::collision();
-    System::lighting();
-    System::death();
+    $systems.runUpdate();
   }
 
   bool FSM::active() {

src/gui/fsm.hpp

@@ -14,6 +14,7 @@
 #include "gui/dnd_loot.hpp"
 #include "storyboard/ui.hpp"
 #include "events.hpp"
+#include "game/registry.hpp"
 
 namespace gui {
   enum class State {
@@ -46,6 +47,7 @@ namespace gui {
       LootUI $loot_ui;
       gui::routing::Router $router;
       DNDLoot $dnd_loot;
+      System::Registry $systems;
 
       FSM();