#include <iostream>
#include <string>
#include "AudioObject.h"

namespace audio
{
	AudioObject::AudioObject(std::string audioFile)
	{
		audioFile_ = audioFile;
		SourcePos[0]=0;
		SourcePos[1]=0;
		SourcePos[2]=0;

		 SourceVel[0]=0;
		 SourceVel[1]=0;
		 SourceVel[2]=0;

		 ListenerPos[0]=0;
		 ListenerPos[1]=0;
		 ListenerPos[2]=0;

		 ListenerVel[0]=0;
		 ListenerVel[1]=0;
		 ListenerVel[2]=0;

		 ListenerOri[0]=0;
		 ListenerOri[1]=0;
		 ListenerOri[2]=-1;
		 ListenerOri[3]=0;
		 ListenerOri[4]=1;
		 ListenerOri[5]=0;


		// Initialize OpenAL and clear the error bit.
	
		alutInit(NULL, 0);
		alGetError();
	
		// Load the wav data.
	
		if(LoadALData() == AL_FALSE)
		{
		    printf("Error loading sound data.");
			
		}

		SetListenerValues();
		std::cout << "Play sone ambient background sound";
	}
	
	AudioObject::~AudioObject()
	{	
		KillALData();
	}
	
	ALboolean AudioObject::LoadALData()
	{
		ALenum format;
		ALsizei size;
		ALvoid* data;
		ALsizei freq;
		ALboolean loop;
	
	
		alGenBuffers(1, &Buffer);
	
		if(alGetError() != AL_NO_ERROR)
			return AL_FALSE;
	
		alutLoadWAVFile((ALbyte*)audioFile_.c_str(), &format, &data, &size, &freq, &loop);
		alBufferData(Buffer, format, data, size, freq);
		alutUnloadWAV(format, data, size, freq);
	
		alGenSources(1, &Source);
	
		if(alGetError() != AL_NO_ERROR)
			return AL_FALSE;
	
		alSourcei (Source, AL_BUFFER,   Buffer   );
		alSourcef (Source, AL_PITCH,    1.0      );
		alSourcef (Source, AL_GAIN,     1.0      );
		alSourcefv(Source, AL_POSITION, SourcePos);
		alSourcefv(Source, AL_VELOCITY, SourceVel);
		alSourcei (Source, AL_LOOPING,  loop     );
	
		if(alGetError() == AL_NO_ERROR)
			return AL_TRUE;
	
	
		return AL_FALSE;
	}	

	void AudioObject::SetListenerValues()
	{
		alListenerfv(AL_POSITION,    ListenerPos);
		alListenerfv(AL_VELOCITY,    ListenerVel);
		alListenerfv(AL_ORIENTATION, ListenerOri);
	}
	
	void AudioObject::KillALData()
	{
		alDeleteBuffers(1, &Buffer);
		alDeleteSources(1, &Source);
		alutExit();
	}

	void AudioObject::play()
	{
		alSourcePlay(Source);
	
	}
}