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engines/titanic/sound/music_room_instrument.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 TITANIC_MUSIC_ROOM_INSTRUMENT_H
+#define TITANIC_MUSIC_ROOM_INSTRUMENT_H
+
+#include "common/array.h"
+#include "titanic/support/string.h"
+
+namespace Titanic {
+
+enum MusicWaveInstrument { MV_PIANO = 0, MV_BASS = 1, MV_BELLS = 2, MV_SNAKE = 3 };
+
+class CProjectItem;
+class CSoundManager;
+class CWaveFile;
+class CGameObject;
+
+class CMusicRoomInstrument {
+	struct CInstrumentWaveFile {
+		CWaveFile *_waveFile;
+		int _value;
+		CInstrumentWaveFile() : _waveFile(nullptr), _value(0) {}
+	};
+private:
+	static bool _pianoToggle;
+	static int _pianoCtr;
+	static int _bassCtr;
+	static byte *_buffer;
+	static double *_array;
+	static int _arrayIndex;
+private:
+	CSoundManager *_soundManager;
+	Common::Array<CInstrumentWaveFile> _items;
+	MusicWaveInstrument _instrument;
+	CProjectItem *_project;
+	CGameObject *_gameObjects[4];
+	int _waveIndex;
+	int _readPos;
+	int _readIncrement;
+	uint _size;
+	uint _count;
+	int _field4C;
+private:
+	/**
+	 * Loads the specified wave file, and returns a CWaveFile instance for it
+	 */
+	CWaveFile *createWaveFile(const CString &name);
+
+	/**
+	 * Sets up an array used for figuring out the sequence in which to
+	 * play the different wave files for each instrument to give the
+	 * music based on the console's settings
+	 */
+	void setupArray(int minVal, int maxVal);
+public:
+	double _insStartTime;
+public:
+	/**
+	 * Handles initialization of static fields
+	 */
+	static void init();
+
+	/**
+	 * Deinitialization of static fields
+	 */
+	static void deinit();
+public:
+	CMusicRoomInstrument(CProjectItem *project, CSoundManager *soundManager, MusicWaveInstrument instrument);
+
+	/**
+	 * Sets the maximum number of allowed files that be defined
+	 */
+	void setFilesCount(uint count);
+
+	/**
+	 * Loads a new file into the list of available entries
+	 */
+	void load(int index, const CString &filename, int v3);
+
+
+	/**
+	 * Starts the music and associated animations
+	 */
+	void start();
+
+	/**
+	 * Stops the music and associated animations
+	 */
+	void stop();
+
+	/**
+	 * Handles regular updates of the instrument, allowing associated
+	 * objects to start animations as the music is played
+	 */
+	void update(int val);
+
+	/**
+	 * Clear the instrument
+	 */
+	void clear();
+
+	/**
+	 * Resets the instrument, and sets the maximum for how much data can
+	 * be read from the wave files during each read action
+	 */
+	void reset(uint total);
+
+	/**
+	 * If there is any wave file currently specified, reads it in
+	 * and merges it into the supplied buffer
+	 */
+	int read(int16 *ptr, uint size);
+
+	/**
+	 * Figure out which wave file to use next
+	 */
+	void chooseWaveFile(int index, int freq);
+};
+
+} // End of namespace Titanic
+
+#endif /* TITANIC_MUSIC_ROOM_INSTRUMENT_H */