mirror of https://github.com/axmolengine/axmol.git
536 lines
14 KiB
C++
536 lines
14 KiB
C++
/****************************************************************************
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Copyright (c) 2010 cocos2d-x.org
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http://www.cocos2d-x.org
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#include <map>
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#include <string>
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#include <vector>
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#include <stdio.h>
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#include <unistd.h>
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#include <AL/al.h>
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#include <AL/alc.h>
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#include <AL/alut.h>
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#include "OpenALDecoder.h"
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#include "SimpleAudioEngine.h"
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#ifdef ENABLE_MPG123
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#include <mpg123.h>
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#endif
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USING_NS_CC;
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using namespace std;
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namespace CocosDenshion
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{
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struct soundData {
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ALuint buffer;
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ALuint source;
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bool isLooped;
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float pitch;
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float pan;
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float gain;
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};
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typedef map<string, soundData *> EffectsMap;
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EffectsMap s_effects;
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typedef enum {
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PLAYING,
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STOPPED,
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PAUSED,
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} playStatus;
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static float s_volume = 1.0f;
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static float s_effectVolume = 1.0f;
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struct backgroundMusicData {
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ALuint buffer;
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ALuint source;
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};
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typedef map<string, backgroundMusicData *> BackgroundMusicsMap;
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BackgroundMusicsMap s_backgroundMusics;
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static ALuint s_backgroundSource = AL_NONE;
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static SimpleAudioEngine *s_engine = 0;
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static int checkALError(const char *funcName)
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{
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int err = alGetError();
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if (err != AL_NO_ERROR)
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{
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switch (err)
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{
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case AL_INVALID_NAME:
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fprintf(stderr, "AL_INVALID_NAME in %s\n", funcName);
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break;
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case AL_INVALID_ENUM:
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fprintf(stderr, "AL_INVALID_ENUM in %s\n", funcName);
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break;
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case AL_INVALID_VALUE:
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fprintf(stderr, "AL_INVALID_VALUE in %s\n", funcName);
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break;
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case AL_INVALID_OPERATION:
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fprintf(stderr, "AL_INVALID_OPERATION in %s\n", funcName);
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break;
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case AL_OUT_OF_MEMORY:
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fprintf(stderr, "AL_OUT_OF_MEMORY in %s\n", funcName);
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break;
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}
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}
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return err;
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}
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static void stopBackground(bool bReleaseData)
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{
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alSourceStop(s_backgroundSource);
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if (bReleaseData)
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{
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for (BackgroundMusicsMap::iterator it = s_backgroundMusics.begin(); it != s_backgroundMusics.end(); ++it)
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{
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if (it->second->source == s_backgroundSource)
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{
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alDeleteBuffers(1, &it->second->buffer);
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checkALError("stopBackground:alDeleteBuffers");
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alDeleteSources(1, &it->second->source);
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checkALError("stopBackground:alDeleteSources");
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delete it->second;
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s_backgroundMusics.erase(it);
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break;
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}
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}
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}
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s_backgroundSource = AL_NONE;
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}
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static void setBackgroundVolume(float volume)
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{
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alSourcef(s_backgroundSource, AL_GAIN, volume);
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}
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SimpleAudioEngine::SimpleAudioEngine()
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{
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alutInit(0, 0);
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#ifdef ENABLE_MPG123
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mpg123_init();
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#endif
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checkALError("SimpleAudioEngine:alutInit");
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OpenALDecoder::installDecoders();
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}
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SimpleAudioEngine::~SimpleAudioEngine()
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{
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#ifdef ENABLE_MPG123
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mpg123_exit();
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#endif
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alutExit();
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}
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SimpleAudioEngine* SimpleAudioEngine::sharedEngine()
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{
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if (!s_engine)
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s_engine = new SimpleAudioEngine();
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return s_engine;
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}
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void SimpleAudioEngine::end()
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{
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checkALError("end:init");
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// clear all the sounds
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EffectsMap::const_iterator end = s_effects.end();
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for (EffectsMap::iterator it = s_effects.begin(); it != end; it++)
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{
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alSourceStop(it->second->source);
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checkALError("end:alSourceStop");
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alDeleteBuffers(1, &it->second->buffer);
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checkALError("end:alDeleteBuffers");
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alDeleteSources(1, &it->second->source);
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checkALError("end:alDeleteSources");
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delete it->second;
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}
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s_effects.clear();
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// and the background too
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stopBackground(true);
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for (BackgroundMusicsMap::iterator it = s_backgroundMusics.begin(); it != s_backgroundMusics.end(); ++it)
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{
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alSourceStop(it->second->source);
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checkALError("end:alSourceStop");
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alDeleteBuffers(1, &it->second->buffer);
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checkALError("end:alDeleteBuffers");
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alDeleteSources(1, &it->second->source);
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checkALError("end:alDeleteSources");
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delete it->second;
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}
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s_backgroundMusics.clear();
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}
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//
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// background audio
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//
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void SimpleAudioEngine::preloadBackgroundMusic(const char* pszFilePath)
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{
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// Changing file path to full path
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std::string fullPath = FileUtils::getInstance()->fullPathForFilename(pszFilePath);
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BackgroundMusicsMap::const_iterator it = s_backgroundMusics.find(fullPath);
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if (it == s_backgroundMusics.end())
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{
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ALuint buffer = AL_NONE;
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bool success = false;
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OpenALFile file;
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file.debugName = pszFilePath;
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file.file = fopen(fullPath.c_str(), "rb");
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if (!file.file) {
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fprintf(stderr, "Cannot read file: '%s'\n", fullPath.data());
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return;
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}
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const std::vector<OpenALDecoder *> &decoders = OpenALDecoder::getDecoders();
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for (size_t i = 0, n = decoders.size(); !success && i < n; ++i)
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success = decoders[i]->decode(file, buffer);
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file.clear();
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ALuint source = AL_NONE;
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alGenSources(1, &source);
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checkALError("preloadBackgroundMusic:alGenSources");
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alSourcei(source, AL_BUFFER, buffer);
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checkALError("preloadBackgroundMusic:alSourcei");
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backgroundMusicData* data = new backgroundMusicData();
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data->buffer = buffer;
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data->source = source;
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s_backgroundMusics.insert(BackgroundMusicsMap::value_type(fullPath, data));
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}
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}
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void SimpleAudioEngine::playBackgroundMusic(const char* pszFilePath, bool bLoop)
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{
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if (s_backgroundSource != AL_NONE)
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stopBackgroundMusic(false);
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// Changing file path to full path
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std::string fullPath = FileUtils::getInstance()->fullPathForFilename(pszFilePath);
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BackgroundMusicsMap::const_iterator it = s_backgroundMusics.find(fullPath);
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if (it == s_backgroundMusics.end())
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{
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preloadBackgroundMusic(fullPath.c_str());
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it = s_backgroundMusics.find(fullPath);
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}
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if (it != s_backgroundMusics.end())
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{
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s_backgroundSource = it->second->source;
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alSourcei(s_backgroundSource, AL_LOOPING, bLoop ? AL_TRUE : AL_FALSE);
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alSourcePlay(s_backgroundSource);
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checkALError("playBackgroundMusic:alSourcePlay");
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}
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}
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void SimpleAudioEngine::stopBackgroundMusic(bool bReleaseData)
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{
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ALint state;
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alGetSourcei(s_backgroundSource, AL_SOURCE_STATE, &state);
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if (state == AL_PLAYING)
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stopBackground(bReleaseData);
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}
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void SimpleAudioEngine::pauseBackgroundMusic()
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{
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ALint state;
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alGetSourcei(s_backgroundSource, AL_SOURCE_STATE, &state);
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if (state == AL_PLAYING)
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alSourcePause(s_backgroundSource);
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checkALError("pauseBackgroundMusic:alSourcePause");
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}
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void SimpleAudioEngine::resumeBackgroundMusic()
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{
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ALint state;
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alGetSourcei(s_backgroundSource, AL_SOURCE_STATE, &state);
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if (state == AL_PAUSED)
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alSourcePlay(s_backgroundSource);
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checkALError("resumeBackgroundMusic:alSourcePlay");
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}
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void SimpleAudioEngine::rewindBackgroundMusic()
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{
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ALint state;
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alGetSourcei(s_backgroundSource, AL_SOURCE_STATE, &state);
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alSourceRewind(s_backgroundSource);
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if (state == AL_PLAYING)
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{
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alSourcePlay(s_backgroundSource);
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}
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else if (state == AL_PAUSED)
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{
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alSourcePlay(s_backgroundSource);
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alSourcePause(s_backgroundSource);
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}
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checkALError("rewindBackgroundMusic:alSourceRewind");
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}
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bool SimpleAudioEngine::willPlayBackgroundMusic()
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{
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return true;
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}
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bool SimpleAudioEngine::isBackgroundMusicPlaying()
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{
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ALint play_status;
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alGetSourcei(s_backgroundSource, AL_SOURCE_STATE, &play_status);
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return (play_status == AL_PLAYING);
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}
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float SimpleAudioEngine::getBackgroundMusicVolume()
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{
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return s_volume;
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}
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void SimpleAudioEngine::setBackgroundMusicVolume(float volume)
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{
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if (s_volume != volume && volume >= -0.0001 && volume <= 1.0001)
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{
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s_volume = volume;
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setBackgroundVolume(volume);
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}
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}
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//
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// Effect audio (using OpenAL)
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//
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float SimpleAudioEngine::getEffectsVolume()
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{
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return s_effectVolume;
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}
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void SimpleAudioEngine::setEffectsVolume(float volume)
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{
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if (volume != s_effectVolume)
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{
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EffectsMap::const_iterator end = s_effects.end();
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for (EffectsMap::const_iterator it = s_effects.begin(); it != end; it++)
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{
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alSourcef(it->second->source, AL_GAIN, volume * it->second->gain);
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}
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s_effectVolume = volume;
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}
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}
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unsigned int SimpleAudioEngine::playEffect(const char* pszFilePath, bool bLoop,
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float pitch, float pan, float gain)
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{
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std::string fullPath = FileUtils::getInstance()->fullPathForFilename(pszFilePath);
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EffectsMap::iterator iter = s_effects.find(fullPath);
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if (iter == s_effects.end())
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{
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preloadEffect(fullPath.c_str());
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// let's try again
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iter = s_effects.find(fullPath);
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if (iter == s_effects.end())
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{
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fprintf(stderr, "could not find play sound %s\n", fullPath.c_str());
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return -1;
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}
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}
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checkALError("playEffect:init");
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soundData &d = *iter->second;
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d.isLooped = bLoop;
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d.pitch = pitch;
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d.pan = pan;
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d.gain = gain;
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alSourcei(d.source, AL_LOOPING, d.isLooped ? AL_TRUE : AL_FALSE);
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alSourcef(d.source, AL_GAIN, s_effectVolume * d.gain);
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alSourcef(d.source, AL_PITCH, d.pitch);
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float sourcePosAL[] = {d.pan, 0.0f, 0.0f};//Set position - just using left and right panning
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alSourcefv(d.source, AL_POSITION, sourcePosAL);
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alSourcePlay(d.source);
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checkALError("playEffect:alSourcePlay");
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return d.source;
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}
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void SimpleAudioEngine::stopEffect(unsigned int nSoundId)
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{
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alSourceStop(nSoundId);
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checkALError("stopEffect:alSourceStop");
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}
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void SimpleAudioEngine::preloadEffect(const char* pszFilePath)
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{
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// Changing file path to full path
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std::string fullPath = FileUtils::getInstance()->fullPathForFilename(pszFilePath);
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EffectsMap::iterator iter = s_effects.find(fullPath);
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// check if we have this already
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if (iter == s_effects.end())
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{
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ALuint buffer = AL_NONE;
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ALuint source = AL_NONE;
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soundData *data = new soundData;
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checkALError("preloadEffect:init");
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OpenALFile file;
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file.debugName = pszFilePath;
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file.file = fopen(fullPath.c_str(), "rb");
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if (!file.file) {
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fprintf(stderr, "Cannot read file: '%s'\n", fullPath.data());
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return;
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}
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bool success = false;
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const std::vector<OpenALDecoder *> &decoders = OpenALDecoder::getDecoders();
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for (size_t i = 0, n = decoders.size(); !success && i < n; ++i)
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success = decoders[i]->decode(file, buffer);
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file.clear();
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alGenSources(1, &source);
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if (checkALError("preloadEffect:alGenSources") != AL_NO_ERROR)
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{
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alDeleteBuffers(1, &buffer);
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return;
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}
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alSourcei(source, AL_BUFFER, buffer);
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checkALError("preloadEffect:alSourcei");
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data->isLooped = false;
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data->buffer = buffer;
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data->source = source;
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data->pitch = 1.0;
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data->pan = 0.0;
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data->gain = 1.0;
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s_effects.insert(EffectsMap::value_type(fullPath, data));
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}
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}
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void SimpleAudioEngine::unloadEffect(const char* pszFilePath)
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{
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// Changing file path to full path
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std::string fullPath = FileUtils::getInstance()->fullPathForFilename(pszFilePath);
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EffectsMap::iterator iter = s_effects.find(fullPath);
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if (iter != s_effects.end())
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{
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checkALError("unloadEffect:init");
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alSourceStop(iter->second->source);
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checkALError("unloadEffect:alSourceStop");
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alDeleteSources(1, &iter->second->source);
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checkALError("unloadEffect:DeletSources");
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alDeleteBuffers(1, &iter->second->buffer);
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checkALError("unloadEffect:alDeleteBuffers");
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delete iter->second;
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s_effects.erase(iter);
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}
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}
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void SimpleAudioEngine::pauseEffect(unsigned int nSoundId)
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{
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ALint state;
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alGetSourcei(nSoundId, AL_SOURCE_STATE, &state);
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if (state == AL_PLAYING)
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alSourcePause(nSoundId);
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checkALError("pauseEffect:alSourcePause");
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}
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void SimpleAudioEngine::pauseAllEffects()
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{
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EffectsMap::iterator iter = s_effects.begin();
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ALint state;
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while (iter != s_effects.end())
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{
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alGetSourcei(iter->second->source, AL_SOURCE_STATE, &state);
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if (state == AL_PLAYING)
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alSourcePause(iter->second->source);
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checkALError("pauseAllEffects:alSourcePause");
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++iter;
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}
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}
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void SimpleAudioEngine::resumeEffect(unsigned int nSoundId)
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{
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ALint state;
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alGetSourcei(nSoundId, AL_SOURCE_STATE, &state);
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if (state == AL_PAUSED)
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alSourcePlay(nSoundId);
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checkALError("resumeEffect:alSourcePlay");
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}
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void SimpleAudioEngine::resumeAllEffects()
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{
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EffectsMap::iterator iter = s_effects.begin();
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ALint state;
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while (iter != s_effects.end())
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{
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alGetSourcei(iter->second->source, AL_SOURCE_STATE, &state);
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if (state == AL_PAUSED)
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alSourcePlay(iter->second->source);
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checkALError("resumeAllEffects:alSourcePlay");
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++iter;
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}
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}
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void SimpleAudioEngine::stopAllEffects()
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{
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EffectsMap::iterator iter = s_effects.begin();
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if (iter != s_effects.end())
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{
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checkALError("stopAllEffects:init");
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alSourceStop(iter->second->source);
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checkALError("stopAllEffects:alSourceStop");
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}
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}
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}
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