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SoundManager.cpp
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SoundManager.cpp
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/*
* Copyright (C) 2013 Me and My Shadow
*
* This file is part of Me and My Shadow.
*
* Me and My Shadow 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.
*
* Me and My Shadow 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 Me and My Shadow. If not, see <http://www.gnu.org/licenses/>.
*/
#include "SoundManager.h"
#include "TreeStorageNode.h"
#include "POASerializer.h"
#include "FileManager.h"
#include "Functions.h"
#include <stdio.h>
#include <fstream>
#include <iostream>
#include <algorithm>
using namespace std;
SoundManager::SoundManager(){
Mix_ChannelFinished(channelFinishedHook);
}
SoundManager::~SoundManager(){
//We call destroy().
destroy();
}
void SoundManager::destroy(){
//Loop through the imageCollection and free them.
std::map<std::string,Mix_Chunk*>::iterator i;
for(i=sounds.begin();i!=sounds.end();++i){
if(i->second!=NULL){
Mix_FreeChunk(i->second);
}
}
//And clear the collection.
sounds.clear();
}
void SoundManager::loadSound(const std::string &file,const std::string &name){
//Make sure the name isn't in use already.
Mix_Chunk* sfx=sounds[name];
if(sfx!=NULL){
cerr<<"WARNING: There's already a sound registered for: "<<name<<endl;
return;
}
//Now load the sound file.
sfx=Mix_LoadWAV(file.c_str());
if(sfx==NULL)
cerr<<"ERROR: Can't load sound file "<<file<<", "<<SDL_GetError()<<endl;
sounds[name]=sfx;
}
void SoundManager::playSound(const std::string &name,const int concurrent,const bool force){
//Make sure sound is enabled.
if(!getSettings()->getBoolValue("sound"))
return;
//Check if the music is in the collection.
Mix_Chunk* sfx=sounds[name];
if(sfx==NULL){
cerr<<"WARNING: No such sound registered: "<<name<<endl;
return;
}
//Check if there's a limit to the number of times the sfx should be played at the same time.
if(concurrent!=-1){
//There is so check the number of currently playing.
int currentPlaying=0;
for(int i=0;i<MIX_CHANNELS;i++){
if(playing[i]==name)
currentPlaying++;
}
//Check if there are too many of the same effect playing.
if(currentPlaying>=concurrent)
return;
}
//Try to play the sfx on a free channel.
int channel=Mix_PlayChannel(-1,sfx,0);
//Check if there was an error.
if(channel==-1){
if(force){
//We need to clear a channel for the sfx since it has to be played.
//FIXME: Always clear the first channel?
Mix_HaltChannel(0);
channel=Mix_PlayChannel(0,sfx,0);
if(channel==-1)
cerr<<"WARNING: Unable to forcefully play sound '"<<name<<"'!"<<endl;
}else{
cerr<<"WARNING: Unable to play sound '"<<name<<"', out of channels."<<endl;
}
}else{
playing[channel]=name;
}
}
void SoundManager::channelFinished(int channel){
playing[channel].clear();
}

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