1 files changed, 68 insertions, 0 deletions
diff --git a/src/game/shared/world/item_registry.cc b/src/game/shared/world/item_registry.cc
new file mode 100644
index 0000000..d89abe9
--- /dev/null
+++ b/src/game/shared/world/item_registry.cc
@@ -0,0 +1,68 @@
+#include "shared/pch.hh"
+
+#include "shared/world/item_registry.hh"
+
+#include "core/math/crc64.hh"
+
+#include "shared/world/voxel_registry.hh"
+
+static std::uint64_t registry_checksum = 0U;
+std::unordered_map<std::string, item_id> world::item_registry::names = {};
+std::vector<std::unique_ptr<world::Item>> world::item_registry::items = {};
+
+static void recalculate_checksum(void)
+{
+    registry_checksum = 0U;
+
+    for(const auto& item : world::item_registry::items) {
+        registry_checksum = item->get_checksum(registry_checksum);
+    }
+}
+
+world::Item* world::item_registry::register_item(const ItemBuilder& builder)
+{
+    assert(builder.get_name().size());
+    assert(nullptr == find(builder.get_name()));
+
+    const auto id = static_cast<item_id>(1 + items.size());
+
+    std::unique_ptr<Item> item(builder.build(id));
+    names.emplace(std::string(builder.get_name()), id);
+    items.push_back(std::move(item));
+
+    recalculate_checksum();
+
+    return items.back().get();
+}
+
+world::Item* world::item_registry::find(std::string_view name)
+{
+    const auto it = names.find(std::string(name));
+
+    if(it == names.end()) {
+        return nullptr;
+    }
+
+    return items[it->second - 1].get();
+}
+
+world::Item* world::item_registry::find(const item_id item)
+{
+    if(item == NULL_ITEM_ID || item > items.size()) {
+        return nullptr;
+    }
+
+    return items[item - 1].get();
+}
+
+void world::item_registry::purge(void)
+{
+    registry_checksum = 0U;
+    items.clear();
+    names.clear();
+}
+
+std::uint64_t world::item_registry::get_checksum(void)
+{
+    return registry_checksum;
+}