[nostalgia] Add external palettes to tilesheet system

src/nostalgia/core/sdl/core.cpp

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2016 - 2019 gtalent2@gmail.com
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#include <SDL.h>
+
+#include <nostalgia/core/core.hpp>
+
+namespace nostalgia::core {
+
+ox::Error run() {
+	for (auto running = true; running;) {
+		SDL_Event event;
+		while (SDL_PollEvent(&event)) {
+			switch (event.type) {
+				case SDL_KEYDOWN:
+					if (event.key.keysym.sym == SDLK_q) {
+						running = false;
+					}
+					break;
+				case SDL_QUIT: {
+					running = false;
+					break;
+				}
+			}
+		}
+		SDL_Delay(1);
+	}
+	return OxError(0);
+}
+
+}