From e55a98c2a0281419c0cec1fa1ebefbbf09268a32 Mon Sep 17 00:00:00 2001
From: lisyarus <lisyarus@gmail.com>
Date: Thu, 27 Jun 2024 16:51:25 +0300
Subject: [PATCH] Add ecs::accessor::contains(uuid)

---
 libs/ecs/include/psemek/ecs/accessor.hpp | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/libs/ecs/include/psemek/ecs/accessor.hpp b/libs/ecs/include/psemek/ecs/accessor.hpp
index 678b2177..daa681fb 100644
--- a/libs/ecs/include/psemek/ecs/accessor.hpp
+++ b/libs/ecs/include/psemek/ecs/accessor.hpp
@@ -61,6 +61,15 @@ namespace psemek::ecs
 		template <typename Component>
 		bool contains() const;
 
+		/** Check if the entity contains this component type by uuid.
+		 *
+		 *  @param uuid The uuid of the component
+		 *  @return True if the entity contains a component with the specified
+		 *    uuid, false otherwise
+		 *  @pre The accessor is valid
+		 */
+		bool contains(util::uuid const & uuid) const;
+
 	private:
 		detail::table * table_ = nullptr;
 		std::uint32_t row_ = 0;
@@ -120,6 +129,11 @@ namespace psemek::ecs
 		return get_if<Component const>() != nullptr;
 	}
 
+	inline bool accessor::contains(util::uuid const & uuid) const
+	{
+		return table_->column_index(uuid) != std::nullopt;
+	}
+
 	inline accessor::accessor(detail::table * table, std::uint32_t row)
 		: table_(table)
 		, row_(row)