Merge in the refactor from earlier.

components.hpp

@@ -1,28 +1,30 @@
 #pragma once
 #include "dinkyecs.hpp"
 
-struct Player {
+namespace Components {
+  struct Player {
     DinkyECS::Entity entity;
-};
+  };
 
-struct Position {
+  struct Position {
     Point location;
-};
+  };
 
-struct Motion {
+  struct Motion {
     int dx;
     int dy;
-};
+  };
 
-struct Combat {
+  struct Combat {
     int hp;
     int damage;
-};
+  };
 
-struct Treasure {
+  struct Treasure {
     int amount;
-};
+  };
 
-struct Tile {
+  struct Tile {
     std::string chr = "!";
-};
+  };
+}

gui.cpp

@@ -26,6 +26,7 @@ using std::string;
 using namespace fmt;
 using namespace std::chrono_literals;
 using namespace ftxui;
+using namespace Components;
 
 std::array<sf::Color, 10> VALUES{
   sf::Color{1, 4, 2},  // black
@@ -96,8 +97,9 @@ void GUI::create_renderer() {
   });
 }
 
-void GUI::handle_events() {
+bool GUI::handle_events() {
   sf::Event event;
+  bool event_happened = false;
 
   while($window.pollEvent(event)) {
     if(event.type == sf::Event::Closed) {
@@ -105,27 +107,31 @@ void GUI::handle_events() {
     } else if(event.type ==  sf::Event::KeyPressed) {
       auto player = $world.get<Player>();
       auto& player_motion = $world.component<Motion>(player.entity);
-      auto& player_position = $world.component<Position>(player.entity);
 
       if(sf::Keyboard::isKeyPressed(sf::Keyboard::Left)) {
         player_motion.dx = -1;
+        event_happened = true;
       } else if(sf::Keyboard::isKeyPressed(sf::Keyboard::Right)) {
         player_motion.dx = 1;
+        event_happened = true;
       } else if(sf::Keyboard::isKeyPressed(sf::Keyboard::Up)) {
         player_motion.dy = -1;
+        event_happened = true;
       } else if(sf::Keyboard::isKeyPressed(sf::Keyboard::Down)) {
         player_motion.dy = 1;
+        event_happened = true;
+      }
+    }
   }
 
-      $game_map.set_target(player_position.location);
+  return event_happened;
-      $game_map.make_paths();
+}
-      // COMPOSE system? You create a bunch of callbacks and then combine them into
+
-      // a single run over the data?
+void GUI::run_systems() {
+  auto player = $world.get<Player>();
   System::enemy_pathing($world, $game_map, player);
   System::motion($world, $game_map);
   System::combat($world, player);
-    }
-  }
 }
 
 void GUI::burn() {
@@ -209,7 +215,10 @@ int GUI::main() {
 
   while($window.isOpen()) {
     render_scene();
-    handle_events();
+
+    if(handle_events()) {
+      run_systems();
+    }
 
     std::this_thread::sleep_for(10ms);
   }

gui.hpp

@@ -46,8 +46,6 @@ class GUI {
   sf::Font $font;
   sf::Text $ui_text;
   sf::Text $map_text;
-  bool $shake_it = false;
-  bool $burn_baby_burn = false;
   std::wstring_convert<std::codecvt_utf8_utf16<wchar_t>> $converter;
   sf::RenderWindow $window;
   Screen $screen;
@@ -63,11 +61,12 @@ public:
   sf::Color color(int val);
   void create_renderer();
   void render_scene();
-  void handle_events();
+  bool handle_events();
   void draw_screen(bool clear=true, float map_off_x=0.0f, float map_off_y=0.0f);
   void shake();
   void burn();
   void configure_world();
+  void run_systems();
 
   int main();
 };

scripts/reset_build.sh

@@ -7,4 +7,5 @@ mkdir subprojects
 mv packagecache ./subprojects/
 mkdir builddir
 cp wraps/*.wrap subprojects/
-meson setup --default-library=static --prefer-static builddir
+# on OSX you can't do this with static
+meson setup builddir

systems.cpp

@@ -5,6 +5,8 @@
 using std::string;
 using namespace fmt;
 
+using namespace Components;
+
 void System::enemy_pathing(DinkyECS::World &world, Map &game_map, Player &player) {
   // move enemies system
   world.system<Position, Motion>([&](const auto &ent, auto &position, auto &motion) {

systems.hpp

@@ -4,6 +4,8 @@
 #include "components.hpp"
 #include <ftxui/dom/canvas.hpp>
 
+using namespace Components;
+
 namespace System {
   void motion(DinkyECS::World &world, Map &game_map);
   void combat(DinkyECS::World &world, Player &player);