implement resource manager

1 files changed, 26 insertions, 0 deletions

diff --git a/src/crepe/ResourceManager.hpp b/src/crepe/ResourceManager.hpp
new file mode 100644
index 0000000..8270bc5
--- /dev/null
+++ b/src/crepe/ResourceManager.hpp
@@ -0,0 +1,26 @@
+#pragma once
+
+#include <format>
+
+#include "ResourceManager.h"
+
+namespace crepe {
+
+template <typename T>
+T & ResourceManager::get(const Asset & asset) {
+	using namespace std;
+	static_assert(is_base_of<Resource, T>::value, "cache must recieve a derivative class of Resource");
+
+	CacheEntry & entry = this->get_entry(asset);
+	if (entry.resource == nullptr)
+		entry.resource = make_unique<T>(asset);
+
+	T * concrete_resource = dynamic_cast<T *>(entry.resource.get());
+	if (concrete_resource == nullptr)
+		throw runtime_error(format("ResourceManager: mismatch between requested type and actual type of resource ({})", asset.get_path()));
+
+	return *concrete_resource;
+}
+
+}
+