Initial commit

engines/m4/adv_r/adv_background.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "m4/adv_r/adv_background.h"
+#include "m4/adv_r/adv_file.h"
+#include "m4/vars.h"
+
+namespace M4 {
+
+void adv_freeCodes() {
+	if (_G(screenCodeBuff)) {
+		delete _G(screenCodeBuff);
+		_G(screenCodeBuff) = nullptr;
+	}
+}
+
+void adv_freeBackground() {
+	if (_G(game_bgBuff)) {
+		delete _G(game_bgBuff);
+		_G(game_bgBuff) = nullptr;
+	}
+}
+
+bool adv_restoreBackground() {
+	RGB8 myPalette[256];
+	SysFile sysFile(_G(currBackgroundFN));
+
+	if (load_background(&sysFile, &_G(game_bgBuff), myPalette)) {
+		sysFile.close();
+		return true;
+	} else {
+		return false;
+	}
+}
+
+bool adv_restoreCodes() {
+	SysFile sysFile(_G(currCodeFN));
+
+	_G(screenCodeBuff) = load_codes(&sysFile);
+	if (_G(screenCodeBuff)) {
+		sysFile.close();
+		return true;
+	} else {
+		return false;
+	}
+
+	return true;
+}
+
+} // End of namespace M4