[nostalgia/core] Rename customData functions in Context and move them out of Context

src/nostalgia/core/context.hpp

@@ -25,6 +25,10 @@ class Drawer {
 
 // User Input Output
 class Context {
+	friend constexpr void setApplicationData(Context *ctx, void *applicationData) noexcept;
+	template<typename T>
+	[[nodiscard]]
+	friend constexpr T *applicationData(Context *ctx) noexcept;
 	friend bool bgStatus(Context *ctx, unsigned bg) noexcept;
 	friend common::Size getScreenSize(Context *ctx) noexcept;
 	friend int getScreenHeight(Context *ctx) noexcept;
@@ -60,10 +64,12 @@ class Context {
 		AssetManager assetManager;
 #endif
 	private:
-		void *m_customData = nullptr;
 		void *m_windowerData = nullptr;
 		void *m_rendererData = nullptr;
 
+	protected:
+		void *m_customData = nullptr;
+
 	public:
 		Context() noexcept = default;
 
@@ -71,16 +77,6 @@ class Context {
 		Context(const Context &other) noexcept = delete;
 		Context(const Context &&other) noexcept = delete;
 
-		constexpr void setCustomData(void *customData) noexcept {
-			m_customData = customData;
-		}
-
-		template<typename T>
-		[[nodiscard]]
-		constexpr T *customData() noexcept {
-			return static_cast<T*>(m_customData);
-		}
-
 	protected:
 		template<typename T>
 		[[nodiscard]]
@@ -104,5 +100,15 @@ class Context {
 
 };
 
+constexpr void setApplicationData(Context *ctx, void *applicationData) noexcept {
+	ctx->m_customData = applicationData;
+}
+
+template<typename T>
+[[nodiscard]]
+constexpr T *applicationData(Context *ctx) noexcept {
+	return static_cast<T*>(ctx->m_customData);
+}
+
 }