Brought over a bunch of code from the roguelike and now will use it to generate a random map.

inventory.cpp

@@ -0,0 +1,42 @@
+#include "inventory.hpp"
+
+
+namespace components {
+  void Inventory::add(InventoryItem new_item) {
+    for(auto &slot : items) {
+      if(new_item.data["id"] == slot.data["id"]) {
+        slot.count += new_item.count;
+        return;
+      }
+    }
+
+    items.push_back(new_item);
+  }
+
+  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::erase_item(size_t at) {
+    dbc::check(at < items.size(), fmt::format("inventory index {} too big", at));
+    items.erase(items.begin() + at);
+  }
+
+  int Inventory::item_index(std::string id) {
+    for(size_t i = 0; i < items.size(); i++) {
+      if(items[i].data["id"] == id) {
+        return i;
+      }
+    }
+
+    return -1;
+  }
+}