minetest.git - modified minetest for gpcfs purposes

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/*
Minetest
Copyright (C) 2013 celeron55, Perttu Ahola <celeron55@gmail.com>

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/

#ifndef SOUND_HEADER
#define SOUND_HEADER

#include "irrlichttypes_bloated.h"
#include <string>
#include <set>

class OnDemandSoundFetcher
{
public:
	virtual void fetchSounds(const std::string &name,
			std::set<std::string> &dst_paths,
			std::set<std::string> &dst_datas) = 0;
};

struct SimpleSoundSpec
{
	std::string name;
	float gain;
	SimpleSoundSpec(std::string name="", float gain=1.0):
		name(name),
		gain(gain)
	{}
	bool exists() {return name != "";}
	// Serialization intentionally left out
};

class ISoundManager
{
public:
	virtual ~ISoundManager(){}
	
	// Multiple sounds can be loaded per name; when played, the sound
	// should be chosen randomly from alternatives
	// Return value determines success/failure
	virtual bool loadSoundFile(const std::string &name,
			const std::string &filepath) = 0;
	virtual bool loadSoundData(const std::string &name,
			const std::string &filedata) = 0;

	virtual void updateListener(v3f pos, v3f vel, v3f at, v3f up) = 0;
	virtual void setListenerGain(float gain) = 0;

	// playSound functions return -1 on failure, otherwise a handle to the
	// sound. If name=="", call should be ignored without error.


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