[nostalgia] Make core::shutdown return void and add GBA implementation

src/nostalgia/core/context.hpp

@@ -56,7 +56,7 @@ class Context {
 	                                 const ox::FileAddress &tilesheetPath,
 	                                 const ox::FileAddress &palettePath) noexcept;
 	friend ox::Error run(Context *ctx) noexcept;
-	friend ox::Error shutdown(Context *ctx) noexcept;
+	friend void shutdown(Context *ctx) noexcept;
 	friend ox::Result<ox::UniquePtr<Context>> init(ox::UniquePtr<ox::FileSystem> fs, const char *appName) noexcept;
 	friend ox::String getClipboardText(Context *ctx) noexcept;
 	friend uint64_t ticksMs(Context *ctx) noexcept;
@@ -82,6 +82,8 @@ class Context {
 		AssetManager assetManager;
 		int uninterruptedRefreshes = 3;
 		ox::UniquePtr<BaseClipboardObject> clipboard;
+#else
+		bool running = true;
 #endif
 	protected:
 #ifndef OX_BARE_METAL

src/nostalgia/core/core.hpp

@@ -26,6 +26,6 @@ ox::Error run(Context *ctx) noexcept;
 [[nodiscard]]
 uint64_t ticksMs(Context *ctx) noexcept;
 
-ox::Error shutdown(Context *ctx) noexcept;
+void shutdown(Context *ctx) noexcept;
 
 }

src/nostalgia/core/gba/core.arm.cpp

@@ -20,7 +20,7 @@ UpdateHandler g_updateHandler = nullptr;
 
 ox::Error run(Context *ctx) noexcept {
 	g_wakeupTime = 0;
-	while (1) {
+	while (ctx->running) {
 		if (g_wakeupTime <= g_timerMs && g_updateHandler) {
 			auto sleepTime = g_updateHandler(ctx);
 			if (sleepTime >= 0) {

src/nostalgia/core/gba/core.cpp

@@ -59,4 +59,8 @@ bool buttonDown(Context*, Key k) noexcept {
 	return !(REG_GAMEPAD & (1 << static_cast<int>(k)));
 }
 
+void shutdown(Context *ctx) noexcept {
+	ctx->running = false;
+}
+
 }

src/nostalgia/core/glfw/core.cpp

@@ -79,10 +79,9 @@ bool buttonDown(Context *ctx, Key key) noexcept {
 	return (id->keysDown >> static_cast<int>(key)) & 1;
 }
 
-ox::Error shutdown(Context *ctx) noexcept {
+void shutdown(Context *ctx) noexcept {
 	const auto id = ctx->windowerData<GlfwImplData>();
 	glfwSetWindowShouldClose(id->window, true);
-	return OxError(0);
 }
 
 }