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engines/access/files.h

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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/>.
+ *
+ */
+
+#ifndef ACCESS_FILES_H
+#define ACCESS_FILES_H
+
+#include "common/scummsys.h"
+#include "common/array.h"
+#include "common/file.h"
+#include "graphics/managed_surface.h"
+#include "access/decompress.h"
+
+namespace Access {
+
+class AccessEngine;
+
+struct FileIdent {
+	int _fileNum;
+	int _subfile;
+
+	FileIdent();
+	FileIdent(int fileNum, int subfile) { _fileNum = fileNum; _subfile = subfile; }
+
+	void load(Common::SeekableReadStream &s);
+};
+
+struct CellIdent : FileIdent {
+	byte _cell;
+
+	CellIdent();
+	CellIdent(int cell, int fileNum, int subfile);
+};
+
+class FileManager;
+
+class Resource {
+	friend class FileManager;
+private:
+	Common::File _file;
+	byte *_data;
+public:
+	Common::SeekableReadStream *_stream;
+	int _size;
+
+	Resource();
+	Resource(byte *data, int size);
+	~Resource();
+	byte *data();
+
+	const char *getFileName() const;
+};
+
+class FileManager {
+private:
+	AccessEngine *_vm;
+
+	void openFile(Resource *res, const Common::Path &filename);
+
+	/**
+	 * Handles setting up the resource with a stream for the located resource
+	 */
+	void handleFile(Resource *res);
+
+	/**
+	 * Handles loading a screen surface and palette with decoded resource
+	 */
+	void handleScreen(Graphics::ManagedSurface *dest, Resource *res);
+
+	/**
+	* Open up a sub-file container file
+	*/
+	void setAppended(Resource *file, int fileNum);
+
+	/**
+	* Open up a sub-file resource within an alrady opened container file.
+	*/
+	void gotoAppended(Resource *file, int subfile);
+public:
+	int _fileNumber;
+	Common::Array<uint32> _fileIndex;
+	bool _setPaletteFlag;
+public:
+	FileManager(AccessEngine *vm);
+	~FileManager();
+
+	/**
+	 * Check the existence of a given file
+	 */
+	bool existFile(const Common::Path &filename);
+
+	/**
+	 * Load a given subfile from a container file
+	 */
+	Resource *loadFile(int fileNum, int subfile);
+
+	/**
+	 * Loads a resource specified by a file identifier
+	 */
+	Resource *loadFile(const FileIdent &fileIdent);
+
+	/**
+	 * Load a given file by name
+	 */
+	Resource *loadFile(const Common::Path &filename);
+
+	/**
+	 * Load a given scren from a container file
+	 */
+	void loadScreen(int fileNum, int subfile);
+
+	/**
+	* Load a given screen by name
+	*/
+	void loadScreen(const Common::Path &filename);
+
+	/**
+	 * Load a screen resource onto a designated surface
+	 */
+	void loadScreen(Graphics::ManagedSurface *dest, int fileNum, int subfile);
+};
+
+} // End of namespace Access
+
+#endif /* ACCESS_FILES_H */