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-rw-r--r--src/crepe/types.h9
1 files changed, 8 insertions, 1 deletions
diff --git a/src/crepe/types.h b/src/crepe/types.h
index 0d459e8..914c76c 100644
--- a/src/crepe/types.h
+++ b/src/crepe/types.h
@@ -1,9 +1,16 @@
#pragma once
#include <cstdint>
+#include <functional>
+#include <vector>
namespace crepe {
+//! GameObject ID
typedef uint32_t game_object_id_t;
-}
+//! vector of reference_wrapper
+template <typename T>
+using RefVector = std::vector<std::reference_wrapper<T>>;
+
+} // namespace crepe