From 7c90eb6da1606bc8f87d805f1d5aecf76c1e5cdc Mon Sep 17 00:00:00 2001
From: "Zed A. Shaw" <zed.shaw@gmail.com>
Date: Sun, 4 May 2025 23:40:06 -0400
Subject: [PATCH] GUECS now doesn't have the facts feature from DinkyECS and
 instead you refer to the whole area with gui.MAIN. This is an entity that's
 at 0 and represents the whole grid.  Background is placed there.

---
 boss_fight_ui.cpp |  2 +-
 combat_ui.cpp     |  2 +-
 guecs.cpp         | 10 ++--------
 guecs.hpp         | 30 ++----------------------------
 status_ui.cpp     |  2 +-
 5 files changed, 7 insertions(+), 39 deletions(-)

diff --git a/boss_fight_ui.cpp b/boss_fight_ui.cpp
index 95a4e0f..ad676ce 100644
--- a/boss_fight_ui.cpp
+++ b/boss_fight_ui.cpp
@@ -54,7 +54,7 @@ namespace gui {
 
     $boss_background = textures::get(boss.background);
     $boss_background.sprite->setPosition({BOSS_VIEW_X, BOSS_VIEW_Y});
-    $status.set_the<Background>({$status.$parser});
+    $status.set<Background>($status.MAIN, {$status.$parser});
 
     if(boss.stage) {
       $boss_has_stage = true;
diff --git a/combat_ui.cpp b/combat_ui.cpp
index 5e91b75..c96bb0b 100644
--- a/combat_ui.cpp
+++ b/combat_ui.cpp
@@ -37,7 +37,7 @@ namespace gui {
   }
 
   void CombatUI::init() {
-    $gui.set_the<Background>({$gui.$parser, ColorValue::DARK_MID});
+    $gui.set<Background>($gui.MAIN, {$gui.$parser, ColorValue::DARK_MID});
     auto& the_belt = $level.world->get_the<ritual::Belt>();
 
     for(int slot = 0; slot < the_belt.max_slots; slot++) {
diff --git a/guecs.cpp b/guecs.cpp
index dd23518..22dba4b 100644
--- a/guecs.cpp
+++ b/guecs.cpp
@@ -182,11 +182,6 @@ namespace guecs {
   }
 
   void UI::init() {
-    if(has_the<Background>()) {
-      auto& bg = get_the<Background>();
-      bg.init();
-    }
-
     query<Background>([](auto, auto& bg) {
         bg.init();
     });
@@ -232,9 +227,8 @@ namespace guecs {
   }
 
   void UI::render(sf::RenderWindow& window) {
-    if(has_the<Background>()) {
-      auto& bg = get_the<Background>();
-      window.draw(*bg.shape);
+    if(auto bg = get_if<Background>(MAIN)) {
+      window.draw(*(bg->shape));
     }
 
     query<Effect>([&](auto, auto& shader) {
diff --git a/guecs.hpp b/guecs.hpp
index eddb32d..cce73e8 100644
--- a/guecs.hpp
+++ b/guecs.hpp
@@ -150,11 +150,10 @@ namespace guecs {
 
   class UI {
     public:
-      unsigned long entity_count = 0;
+      Entity MAIN = 0;
+      unsigned long entity_count = 1;
       std::unordered_map<std::type_index, EntityMap> $components;
-      std::unordered_map<std::type_index, std::any> $facts;
       std::unordered_map<std::type_index, std::any> $component_storages;
-
       std::unordered_map<string, Entity> $name_ents;
       shared_ptr<sf::Font> $font = nullptr;
       lel::Parser $parser;
@@ -212,31 +211,6 @@ namespace guecs {
           return $components[std::type_index(typeid(Comp))];
         }
 
-
-      template <typename Comp>
-        bool has_the() {
-          auto comp_id = std::type_index(typeid(Comp));
-          return $facts.contains(comp_id);
-        }
-
-      template <typename Comp>
-        void set_the(Comp val) {
-          $facts.insert_or_assign(std::type_index(typeid(Comp)), val);
-        }
-
-      template <typename Comp>
-        Comp &get_the() {
-          auto comp_id = std::type_index(typeid(Comp));
-          dbc::check($facts.contains(comp_id),
-              fmt::format("!!!! ATTEMPT to access world fact that hasn't "
-                "been set yet: {}",
-                typeid(Comp).name()));
-
-          // use .at to get std::out_of_range if fact not set
-          std::any &res = $facts.at(comp_id);
-          return std::any_cast<Comp &>(res);
-        }
-
       template <typename Comp>
         void set(Entity ent, Comp val) {
           EntityMap &map = entity_map_for<Comp>();
diff --git a/status_ui.cpp b/status_ui.cpp
index 85c1b38..eedbfed 100644
--- a/status_ui.cpp
+++ b/status_ui.cpp
@@ -31,7 +31,7 @@ namespace gui {
   }
 
   void StatusUI::init() {
-    $gui.set_the<Background>({$gui.$parser});
+    $gui.set<Background>($gui.MAIN, {$gui.$parser});
 
     for(auto& [name, cell] : $gui.cells()) {
       if(name == "log_view") {