music_process.h

/* 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 ULTIMA8_AUDIO_MUSICPROCESS_H
#define ULTIMA8_AUDIO_MUSICPROCESS_H

#include "ultima/ultima8/kernel/process.h"
#include "ultima/ultima8/usecode/intrinsics.h"
#include "ultima/ultima8/misc/classtype.h"

namespace Ultima {
namespace Ultima8 {

class Debugger;
class MidiPlayer;

class MusicProcess : public Process {
    friend class Debugger;

protected:
    virtual void playMusic_internal(int track) = 0;

    static MusicProcess *_theMusicProcess;

public:
    MusicProcess();
    ~MusicProcess() override;

    ENABLE_RUNTIME_CLASSTYPE()

    
    static MusicProcess *get_instance() {
        return _theMusicProcess;
    }

    virtual void playMusic(int track) = 0;
    virtual void playCombatMusic(int track) = 0;
    virtual void queueMusic(int track) = 0;
    virtual void unqueueMusic() = 0;
    virtual void restoreMusic() = 0;

    virtual void fadeMusic(uint16 length) = 0;
    virtual bool isFading() = 0;

    virtual void saveTrackState() = 0;
    virtual void restoreTrackState() = 0;

    virtual bool isPlaying() = 0;

    virtual void pauseMusic() = 0;
    virtual void unpauseMusic() = 0;

    INTRINSIC(I_playMusic);
    INTRINSIC(I_stopMusic);
    INTRINSIC(I_pauseMusic);
    INTRINSIC(I_unpauseMusic);

};

} // End of namespace Ultima8
} // End of namespace Ultima

#endif