Inventory system is mostly working and I can pick up everything and use it.

assets/items.json

@@ -4,7 +4,7 @@
     "name": "Crappy Torch",
     "foreground": [24, 205, 189],
     "background": [230, 20, 120],
-    "description": "Zombie ipsum reversus ab viral inferno, nam rick grimes malum cerebro. De carne lumbering animata corpora quaeritis. Summus brains sit​​, morbo vel maleficia? De apocalypsi gorger omero undead survivor dictum mauris. Hi mindless mortuis soulless creaturas, imo evil stalking monstra adventus resi dentevil vultus comedat cerebella viventium.",
+    "description": "A torch that barely lights the way.  You wonder if it'd be better to not see the person who murders you.",
     "display": "\u0f08"
   },
   "SWORD_RUSTY": {
@@ -12,7 +12,7 @@
     "name": "Rusty Junk Sword",
     "foreground": [24, 205, 189],
     "background": [24, 205, 189],
-    "description": "Shoreditch pickled readymade tousled tumeric. Chicharrones same jawn irony woke echo park jianbing artisan ethical praxis grailed portland. Banjo solarpunk yes plz, offal Brooklyn beard bushwick letterpress celiac sartorial.",
+    "description": "A sword left to rot in a deep hole where it acquired a patina of dirt and tetanus. You aren't sure if it's more deadly for you to hold it or for the people you stab with it.",
     "display":"\u1e37"
   },
   "CHEST_SMALL": {
@@ -21,7 +21,7 @@
     "foreground": [24, 205, 189],
     "background": [24, 205, 189],
     "display":"\uaaea",
-    "description": "Tote bag sustainable crucifix gentrify kombucha. Try-hard single-origin coffee meh pork belly cliche aesthetic scenester disrupt banjo af."
+    "description": "A small chest of gold.  You wonder who would leave something like this around."
   },
   "WALL_TORCH": {
     "id": "WALL_TORCH",

gui.cpp

@@ -31,14 +31,14 @@ using namespace ftxui;
 using namespace components;
 
 void InventoryUI::create_render() {
-  auto inventory_render = Renderer([&] {
+  MenuOption option;
+  $inventory_box = Menu(&$menu_list, &$selected, option);
+
+  $inventory_render = Renderer([&] {
     auto &player = $world.get_the<Player>();
     auto &inventory = $world.get<Inventory>(player.entity);
     update_menu_list(inventory);
 
-    MenuOption option;
-    $inventory_box = Menu(&$menu_list, &$selected, option);
-
     return hbox({
         $inventory_box->Render() | frame | size(WIDTH, EQUAL, 35) | yflex_grow,
         separator() | yflex_grow,
@@ -48,26 +48,22 @@ void InventoryUI::create_render() {
     }) | border | flex;
   });
 
-  set_renderer(inventory_render);
+  set_renderer($inventory_render);
+  add($inventory_box);
 }
 
 void InventoryUI::update_menu_list(Inventory& inventory) {
-  // BUG: probably need to have a dirty marker on inventory
-  // so we don't update this all the damn time
   $menu_list.clear();
-  int i = 0; // SOOOOO BADDDDD
-  for(auto& [key, val] : inventory.items) {
+  for(size_t i = 0; i < inventory.count(); i++) {
+    auto& item = inventory.get(i);
     $menu_list.push_back(fmt::format("{} {} ({})",
-          string(val.data["display"]),
-          string(val.data["name"]),
-          val.count));
+          string(item.data["display"]),
+          string(item.data["name"]),
+          item.count));
 
-    // GARBAGE HOT
-    if($selected == i) {
-      $item_text = val.data["description"];
+    if($selected == int(i)) {
+      $item_text = item.data["description"];
     }
-
-    i++;
   }
 }
 

gui.hpp

@@ -53,6 +53,7 @@ class InventoryUI : public Panel {
 
   int $selected = 0;
   Component $inventory_box;
+  Component $inventory_render;
   Component $inventory_table;
   DinkyECS::World& $world;
   std::vector<std::string> $menu_list;

inventory.cpp

@@ -2,31 +2,31 @@
 
 
 namespace components {
-  void Inventory::add(InventoryItem item) {
-    std::string id = item.data["id"];
-
-    if(items.contains(id)) {
-      auto &slot = items[id];
-      slot.count += item.count;
-    } else {
-      items[id] = item;
+  void Inventory::add(InventoryItem new_item) {
+    for(auto &slot : items) {
+      if(new_item.data["id"] == slot.data["id"]) {
+        slot.count += new_item.count;
+        return;
       }
     }
 
-  InventoryItem& Inventory::get(std::string id) {
-    dbc::check(items.contains(id), fmt::format("item id {} is not in inventory", id));
-    return items[id];
+    items.push_back(new_item);
   }
 
-  bool Inventory::decrease(std::string id, int count) {
-    dbc::check(items.contains(id), fmt::format("item id {} is not in inventory", id));
-    auto &slot = items[id];
+  InventoryItem& Inventory::get(size_t at) {
+    dbc::check(at < items.size(), fmt::format("inventory index {} too big", at));
+    return items[at];
+  }
+
+  bool Inventory::decrease(size_t at, int count) {
+    dbc::check(at < items.size(), fmt::format("inventory index {} too big", at));
+    auto &slot = items[at];
     slot.count -= count;
     return slot.count > 0;
   }
 
-  void Inventory::remove_all(std::string id) {
-    dbc::check(items.contains(id), fmt::format("item id {} is not in inventory", id));
-    items.erase(id);
+  void Inventory::erase_item(size_t at) {
+    dbc::check(at < items.size(), fmt::format("inventory index {} too big", at));
+    items.erase(items.begin() + at);
   }
 }

inventory.hpp

@@ -16,16 +16,16 @@ namespace components {
   struct Inventory {
     int gold;
     LightSource light;
-    std::unordered_map<std::string, InventoryItem> items;
+    std::vector<InventoryItem> items;
 
     size_t count() { return items.size(); }
 
     void add(InventoryItem item);
 
-    bool decrease(std::string id, int count);
+    bool decrease(size_t at, int count);
 
-    InventoryItem& get(std::string id);
+    InventoryItem& get(size_t at);
 
-    void remove_all(std::string id);
+    void erase_item(size_t at);
   };
 }

main.cpp

@@ -34,7 +34,7 @@ void configure_world(DinkyECS::World &world, Map &game_map) {
   world.set<Motion>(player.entity, {0, 0});
   world.set<Combat>(player.entity, {100, 10});
   world.set<Tile>(player.entity, {config.enemies["PLAYER_TILE"]["display"]});
-  world.set<LightSource>(player.entity, {70,1.0});
+  world.set<LightSource>(player.entity, {50,1.0});
   world.set<Inventory>(player.entity, {5});
 
   auto sword = world.entity();
@@ -44,6 +44,13 @@ void configure_world(DinkyECS::World &world, Map &game_map) {
   world.set<InventoryItem>(sword, {1, config.items["SWORD_RUSTY"]});
   world.set<Weapon>(sword, {20});
 
+  auto torch = world.entity();
+  pos = game_map.place_entity(2);
+  world.set<Position>(torch, {pos.x+1, pos.y+1});
+  world.set<Tile>(torch, {config.items["TORCH_BAD"]["display"]});
+  world.set<InventoryItem>(torch, {1, config.items["TORCH_BAD"]});
+  world.set<LightSource>(torch, {70,2.0f});
+
   auto enemy = world.entity();
   world.set<Position>(enemy, {game_map.place_entity(1)});
   world.set<Motion>(enemy, {0,0});
@@ -61,6 +68,7 @@ void configure_world(DinkyECS::World &world, Map &game_map) {
   world.set<Position>(gold, {game_map.place_entity(3)});
   world.set<Loot>(gold, {100});
   world.set<Tile>(gold, {config.items["CHEST_SMALL"]["display"]});
+  world.set<InventoryItem>(gold, {1, config.items["CHEST_SMALL"]});
 
   auto wall_torch = world.entity();
   world.set<Position>(wall_torch, {game_map.place_entity(4)});

systems.cpp

@@ -150,6 +150,10 @@ void System::collision(DinkyECS::World &world, Player &player) {
           auto &weapon = world.get<Weapon>(entity);
           player_combat.damage = weapon.damage;
           world.remove<Weapon>(entity);
+        } else if(world.has<Loot>(entity)) {
+          auto &loot = world.get<Loot>(entity);
+          inventory.gold += loot.amount;
+          world.remove<Loot>(entity);
         }
 
         collider.remove(item_pos.location);

tests/inventory.cpp

@@ -37,7 +37,7 @@ TEST_CASE("basic inventory test", "[inventory]") {
   System::pickup(world, player, sword);
   REQUIRE(inventory.count() == 1);
   // get the item and confirm there is 1
-  auto &item1 = inventory.get("SWORD_RUSTY");
+  auto &item1 = inventory.get(0);
   REQUIRE(item1.count == 1);
 
   System::pickup(world, player, sword);
@@ -46,16 +46,16 @@ TEST_CASE("basic inventory test", "[inventory]") {
   REQUIRE(inventory.count() == 1);
   REQUIRE(item1.count == 4);
 
-  inventory.decrease("SWORD_RUSTY", 1);
+  inventory.decrease(0, 1);
   REQUIRE(item1.count == 3);
 
-  inventory.decrease("SWORD_RUSTY", 2);
+  inventory.decrease(0, 2);
   REQUIRE(item1.count == 1);
 
-  bool active = inventory.decrease("SWORD_RUSTY", 1);
+  bool active = inventory.decrease(0, 1);
   REQUIRE(item1.count == 0);
   REQUIRE(active == false);
 
-  inventory.remove_all("SWORD_RUSTY");
+  inventory.erase_item(0);
   REQUIRE(inventory.count() == 0);
 }