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engines/queen/resource.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 QUEEN_RESOURCE_H
+#define QUEEN_RESOURCE_H
+
+#include "common/file.h"
+#include "common/str-array.h"
+#include "common/language.h"
+#include "common/platform.h"
+#include "queen/defs.h"
+#include "queen/version.h"
+
+namespace Queen {
+
+struct ResourceEntry {
+	char filename[13];
+	uint8 bundle;
+	uint32 offset;
+	uint32 size;
+};
+
+class Resource {
+public:
+
+	Resource();
+	~Resource();
+
+	//! loads a binary file
+	uint8 *loadFile(const char *filename, uint32 skipBytes = 0, uint32 *size = NULL);
+
+	//! loads a text file
+	void loadTextFile(const char *filename, Common::StringArray &stringList);
+
+	//! returns true if the file is present in the resource
+	bool fileExists(const char *filename) const { return resourceEntry(filename) != NULL; }
+
+	//! returns a reference to a sound file
+	Common::File *findSound(const char *filename, uint32 *size);
+
+	bool isDemo() const { return (_version.features & GF_DEMO) != 0; }
+	bool isInterview() const { return (_version.features & GF_INTERVIEW) != 0; }
+	bool isFloppy() const { return (_version.features & GF_FLOPPY) != 0; }
+	bool isCD() const { return (_version.features & GF_TALKIE) != 0; }
+
+	//! returns compression type for audio files
+	uint8 getCompression() const { return _version.compression; }
+
+	//! returns JAS version string (contains language, platform and version information)
+	const char *getJASVersion() const { return _version.str; }
+
+	//! returns the language of the game
+	Common::Language getLanguage() const { return _version.language; }
+
+	Common::Platform getPlatform() const { return _version.platform; }
+
+	enum {
+		JAS_VERSION_OFFSET_DEMO = 0x119A8,
+		JAS_VERSION_OFFSET_INTV	= 0xCF8,
+		JAS_VERSION_OFFSET_PC	= 0x12484
+	};
+
+protected:
+
+	Common::File _resourceFile;
+
+	int _currentResourceFileNum;
+
+	DetectedGameVersion _version;
+
+	//! number of entries in resource table
+	uint32 _resourceEntries;
+
+	ResourceEntry *_resourceTable;
+
+	//! verify the version of the selected game
+	void checkJASVersion();
+
+	//! returns a reference to the ReseourceEntry for the specified filename
+	ResourceEntry *resourceEntry(const char *filename) const;
+
+	//! seeks resource file to specific bundle and file offset
+	void seekResourceFile(int num, uint32 offset);
+
+	//! extract the resource table for the specified game version
+	void readTableFile(uint8 version, uint32 offset);
+
+	//! read the resource table from the specified file
+	void readTableEntries(Common::File *file);
+
+	//! resource table filename (queen.tbl)
+	static const char *const _tableFilename;
+
+	//! resource table for english floppy version
+	static ResourceEntry _resourceTablePEM10[];
+};
+
+} // End of namespace Queen
+
+#endif