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<hr><h1>background_source.cpp</h1><a href="background__source_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001
00007 <font class="comment">/* Copyright, 2001 Nevrax Ltd.</font>
00008 <font class="comment"> *</font>
00009 <font class="comment"> * This file is part of NEVRAX NEL.</font>
00010 <font class="comment"> * NEVRAX NEL is free software; you can redistribute it and/or modify</font>
00011 <font class="comment"> * it under the terms of the GNU General Public License as published by</font>
00012 <font class="comment"> * the Free Software Foundation; either version 2, or (at your option)</font>
00013 <font class="comment"> * any later version.</font>
00014 <font class="comment"></font>
00015 <font class="comment"> * NEVRAX NEL is distributed in the hope that it will be useful, but</font>
00016 <font class="comment"> * WITHOUT ANY WARRANTY; without even the implied warranty of</font>
00017 <font class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</font>
00018 <font class="comment"> * General Public License for more details.</font>
00019 <font class="comment"></font>
00020 <font class="comment"> * You should have received a copy of the GNU General Public License</font>
00021 <font class="comment"> * along with NEVRAX NEL; see the file COPYING. If not, write to the</font>
00022 <font class="comment"> * Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,</font>
00023 <font class="comment"> * MA 02111-1307, USA.</font>
00024 <font class="comment"> */</font>
00025
00026 <font class="preprocessor">#include "<a class="code" href="stdsound_8h.html">stdsound.h</a>"</font>
00027
00028 <font class="preprocessor">#include "<a class="code" href="background__source_8h.html">background_source.h</a>"</font>
00029
00030 <font class="keyword">using</font> <font class="keyword">namespace </font>std;
00031 <font class="keyword">using</font> <font class="keyword">namespace </font>NLMISC;
00032
00033 <font class="keyword">namespace </font>NLSOUND
00034 {
00035
00037 <font class="keyword">const</font> <a class="code" href="namespaceNLMISC.html#a183">TTime</a> <a class="code" href="namespaceNLSOUND.html#a19">ENV_CHK_INTERVAL</a> = 3000;
00038
00039
<a name="l00040"></a><a class="code" href="classNLSOUND_1_1CBackgroundSource.html#a0">00040</a> CBackgroundSource::CBackgroundSource(CBackgroundSound *backgroundSource, <font class="keywordtype">bool</font> spawn, <a class="code" href="namespaceNLSOUND.html#a9">TSpawnEndCallback</a> cb, <font class="keywordtype">void</font> *cbUserParam)
00041 : CSourceCommon(backgroundSource, spawn, cb, cbUserParam)
00042 {
00043 <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o0">_BackgroundSound</a> = backgroundSource;
00044 }
00045
<a name="l00046"></a><a class="code" href="classNLSOUND_1_1CBackgroundSource.html#a1">00046</a> CBackgroundSource::~CBackgroundSource()
00047 {
00048 <font class="keywordflow">if</font> (_Playing)
00049 <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#a5">stop</a>();
00050 }
00051
<a name="l00052"></a><a class="code" href="classNLSOUND_1_1CBackgroundSource.html#a2">00052</a> <font class="keywordtype">void</font> CBackgroundSource::setSound( <a class="code" href="namespaceNLSOUND.html#a8">TSoundId</a> <a class="code" href="driver__opengl__extension__def_8h.html#a356">id</a>, CSoundContext *context)
00053 {
00054 <a class="code" href="debug_8h.html#a6">nlassert</a>(<font class="keyword">false</font>);
00055 }
00056
<a name="l00057"></a><a class="code" href="classNLSOUND_1_1CBackgroundSource.html#a3">00057</a> <a class="code" href="namespaceNLSOUND.html#a8">TSoundId</a> CBackgroundSource::getSound()
00058 {
00059 <font class="keywordflow">return</font> NULL;
00060 }
00061
<a name="l00062"></a><a class="code" href="classNLSOUND_1_1CBackgroundSource.html#a7">00062</a> <font class="keywordtype">void</font> CBackgroundSource::setGain( <font class="keywordtype">float</font> gain )
00063 {
00064 CSourceCommon::setGain(gain);
00065
00066 std::vector<TSubSource>::iterator first(<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.begin()), last(<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.end());
00067 <font class="keywordflow">for</font> (; first != last; ++first)
00068 {
00069 <font class="keywordflow">if</font> (first->Source != 0)
00070 first->Source->setRelativeGain(<a class="code" href="classNLSOUND_1_1CSourceCommon.html#n6">_Gain</a>);
00071 }
00072 }
<a name="l00073"></a><a class="code" href="classNLSOUND_1_1CBackgroundSource.html#a8">00073</a> <font class="keywordtype">void</font> CBackgroundSource::setRelativeGain( <font class="keywordtype">float</font> gain )
00074 {
00075 CSourceCommon::setRelativeGain(gain);
00076
00077 std::vector<TSubSource>::iterator first(<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.begin()), last(<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.end());
00078 <font class="keywordflow">for</font> (; first != last; ++first)
00079 {
00080 <font class="keywordflow">if</font> (first->Source != 0)
00081 first->Source->setRelativeGain(<a class="code" href="classNLSOUND_1_1CSourceCommon.html#n6">_Gain</a>);
00082 }
00083 }
00084
<a name="l00085"></a><a class="code" href="classNLSOUND_1_1CBackgroundSource.html#a9">00085</a> <font class="keywordtype">void</font> CBackgroundSource::setPos( <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a>& pos )
00086 {
00087 CSourceCommon::setPos(pos);
00088
00089 std::vector<TSubSource>::iterator first(<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.begin()), last(<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.end());
00090 <font class="keywordflow">for</font> (; first != last; ++first)
00091 {
00092 <font class="keywordflow">if</font> (first->Source != 0)
00093 first->Source->setPos(pos);
00094 }
00095 }
00096
<a name="l00097"></a><a class="code" href="classNLSOUND_1_1CBackgroundSource.html#a10">00097</a> <font class="keywordtype">void</font> CBackgroundSource::setVelocity( <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a>& vel )
00098 {
00099 CSourceCommon::setVelocity(vel);
00100
00101 std::vector<TSubSource>::iterator first(<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.begin()), last(<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.end());
00102 <font class="keywordflow">for</font> (; first != last; ++first)
00103 {
00104 <font class="keywordflow">if</font> (first->Source != 0)
00105 first->Source->setVelocity(vel);
00106 }
00107 }
<a name="l00108"></a><a class="code" href="classNLSOUND_1_1CBackgroundSource.html#a11">00108</a> <font class="keywordtype">void</font> CBackgroundSource::setDirection( <font class="keyword">const</font> <a class="code" href="classNLMISC_1_1CVector.html">NLMISC::CVector</a>& dir )
00109 {
00110 CSourceCommon::setDirection(dir);
00111
00112 std::vector<TSubSource>::iterator first(<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.begin()), last(<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.end());
00113 <font class="keywordflow">for</font> (; first != last; ++first)
00114 {
00115 <font class="keywordflow">if</font> (first->Source != 0)
00116 first->Source->setDirection(dir);
00117 }
00118 }
00119
00120
00121
<a name="l00122"></a><a class="code" href="classNLSOUND_1_1CBackgroundSource.html#a4">00122</a> <font class="keywordtype">void</font> CBackgroundSource::play()
00123 {
00124 <font class="keywordflow">if</font> (_Playing)
00125 <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#a5">stop</a>();
00126
00127 CAudioMixerUser *mixer = CAudioMixerUser::instance();
00128
00129 <font class="keyword">const</font> vector<CBackgroundSound::TSoundInfo> &sounds = <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o0">_BackgroundSound</a>->getSounds();
00130 vector<CBackgroundSound::TSoundInfo>::const_iterator first(sounds.begin()), last(sounds.end());
00131
00132 <font class="keywordflow">for</font> (; first != last; ++first)
00133 {
00134 TSubSource subSource;
00135 subSource.Source = mixer->createSource(first->SoundName, <font class="keyword">false</font>);
00136 subSource.Filter = first->Filter;
00137 subSource.FadeStart = 0;
00138 subSource.FilterFadeIn = first->FilterFadeIn;
00139 subSource.FilterFadeOut = first->FilterFadeOut;
00140
00141 <font class="keywordflow">if</font> (subSource.Source && <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#c0">checkFilter</a>(subSource.Filter))
00142 {
00143 subSource.Status = <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#u4u0">SUB_STATUS_PLAY</a>;
00144 subSource.Source->setRelativeGain(<a class="code" href="classNLSOUND_1_1CSourceCommon.html#n6">_Gain</a>);
00145 subSource.Source->setPos(<a class="code" href="classNLSOUND_1_1CSourceCommon.html#n3">_Position</a>);
00146 subSource.Source->play();
00147 }
00148 <font class="keywordflow">else</font>
00149 {
00150 subSource.Status = <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#u4u1">SUB_STATUS_STOP</a>;
00151 }
00152
00153 <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.push_back(subSource);
00154 }
00155
00156 <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o2">_LastCheck</a> = <a class="code" href="classNLMISC_1_1CTime.html#d1">NLMISC::CTime::getLocalTime</a>();
00157
00158 <font class="comment">// Set an event for next env checking.</font>
00159 mixer->addEvent(<font class="keyword">this</font>, <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o2">_LastCheck</a>+<a class="code" href="namespaceNLSOUND.html#a19">ENV_CHK_INTERVAL</a>);
00160
00161 CSourceCommon::play();
00162 }
00163
<a name="l00164"></a><a class="code" href="classNLSOUND_1_1CBackgroundSource.html#a5">00164</a> <font class="keywordtype">void</font> CBackgroundSource::stop()
00165 {
00166 <font class="keywordflow">if</font> (_Playing)
00167 {
00168 CAudioMixerUser *mixer = CAudioMixerUser::instance();
00169 mixer->unregisterUpdate(<font class="keyword">this</font>);
00170 mixer->removeEvents(<font class="keyword">this</font>);
00171
00172 <font class="keywordflow">while</font> (!<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.empty())
00173 {
00174 TSubSource &subSource = <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.back();
00175 <font class="keywordflow">if</font> (subSource.Source != NULL)
00176 {
00177 <font class="comment">// subSource.Source->stop();</font>
00178 <font class="comment">//mixer->removeSource(subSource.Source);</font>
00179 <font class="keyword">delete</font> subSource.Source;
00180
00181 }
00182 <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.pop_back();
00183 }
00184 }
00185
00186 CSourceCommon::stop();
00187 }
00188
<a name="l00189"></a><a class="code" href="classNLSOUND_1_1CBackgroundSource.html#c1">00189</a> <font class="keywordtype">void</font> CBackgroundSource::onUpdate()
00190 {
00191 <font class="comment">// this is called for fade in/out.</font>
00192 CAudioMixerUser *mixer = CAudioMixerUser::instance();
00193 <font class="keywordtype">bool</font> doFade = <font class="keyword">false</font>;
00194 <a class="code" href="namespaceNLMISC.html#a183">TTime</a> now = <a class="code" href="classNLMISC_1_1CTime.html#d1">NLMISC::CTime::getLocalTime</a>();
00195 <font class="keywordtype">float</font> gain;
00196
00197 vector<TSubSource>::iterator first(<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.begin()), last(<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.end());
00198 <font class="keywordflow">for</font> (; first != last; ++first)
00199 {
00200 <font class="keywordflow">if</font> (first->Source != NULL)
00201 {
00202 <font class="keywordflow">if</font> (first->Status == <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#u4u3">SUB_STATUS_FADEIN</a>)
00203 {
00204 <font class="keywordflow">if</font> (first->FilterFadeIn > 0)
00205 gain = (now - first->FadeStart) / float(first->FilterFadeIn);
00206 <font class="keywordflow">else</font>
00207 gain = 1.0f;
00208
00209 <font class="keywordflow">if</font> (gain < 1.0f)
00210 {
00211 first->Source->setRelativeGain(gain);
00212 doFade = <font class="keyword">true</font>;
00213 }
00214 <font class="keywordflow">else</font>
00215 {
00216 <font class="comment">// fade end</font>
00217 first->Source->setRelativeGain(1.0f * <a class="code" href="classNLSOUND_1_1CSourceCommon.html#n6">_Gain</a>);
00218 first->Status = <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#u4u0">SUB_STATUS_PLAY</a>;
00219 }
00220 }
00221 <font class="keywordflow">else</font> <font class="keywordflow">if</font> (first->Status == <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#u4u2">SUB_STATUS_FADEOUT</a>)
00222 {
00223 <font class="keywordflow">if</font> (first->FilterFadeOut > 0)
00224 gain = 1.0f - (now - first->FadeStart) / float(first->FilterFadeOut);
00225 <font class="keywordflow">else</font>
00226 gain = 0.0f;
00227 <font class="keywordflow">if</font> (gain > 0.0f)
00228 {
00229 first->Source->setRelativeGain(gain * <a class="code" href="classNLSOUND_1_1CSourceCommon.html#n6">_Gain</a>);
00230 doFade = <font class="keyword">true</font>;
00231 }
00232 <font class="keywordflow">else</font>
00233 {
00234 first->Source->stop();
00235 first->Status = <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#u4u1">SUB_STATUS_STOP</a>;
00236 }
00237 }
00238 }
00239 }
00240
00241 <font class="comment">// any fade to update ?</font>
00242 <font class="keywordflow">if</font> (!doFade)
00243 mixer->unregisterUpdate(<font class="keyword">this</font>);
00244 }
00245
<a name="l00246"></a><a class="code" href="classNLSOUND_1_1CBackgroundSource.html#c2">00246</a> <font class="keywordtype">void</font> CBackgroundSource::onEvent()
00247 {
00248 <font class="comment">// check all sounds and test for start or stop.</font>
00249 CAudioMixerUser *mixer = CAudioMixerUser::instance();
00250
00251 <font class="keywordtype">bool</font> doFade = <font class="keyword">false</font>;
00252 <a class="code" href="namespaceNLMISC.html#a183">TTime</a> now = <a class="code" href="classNLMISC_1_1CTime.html#d1">NLMISC::CTime::getLocalTime</a>();
00253
00254 vector<TSubSource>::iterator first(<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.begin()), last(<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o1">_Sources</a>.end());
00255 <font class="keywordflow">for</font> (; first != last; ++first)
00256 {
00257 <font class="keywordflow">if</font> (first->Source != NULL)
00258 {
00259 <font class="keywordflow">if</font> (<a class="code" href="classNLSOUND_1_1CBackgroundSource.html#c0">checkFilter</a>(first->Filter))
00260 {
00261 <font class="comment">// source ok</font>
00262 <font class="keywordflow">if</font> (first->Status == <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#u4u1">SUB_STATUS_STOP</a>)
00263 {
00264 first->Status = <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#u4u3">SUB_STATUS_FADEIN</a>;
00265 first->Source->setRelativeGain(0.0f);
00266 first->Source->setPos(<a class="code" href="classNLSOUND_1_1CSourceCommon.html#n3">_Position</a>);
00267 first->Source->play();
00268 first->FadeStart = now;
00269 doFade = <font class="keyword">true</font>;
00270 }
00271 <font class="keywordflow">else</font> <font class="keywordflow">if</font> (first->Status == <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#u4u2">SUB_STATUS_FADEOUT</a>)
00272 {
00273 first->Status = <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#u4u3">SUB_STATUS_FADEIN</a>;
00274 <font class="comment">// Replace fade start date to smoosly reverse the fade.</font>
00275 first->FadeStart = now - (first->FadeStart - first->FilterFadeOut);
00276 doFade = <font class="keyword">true</font>;
00277 }
00278 }
00279 <font class="keywordflow">else</font>
00280 {
00281 <font class="comment">// source masked.</font>
00282 <font class="keywordflow">if</font> (first->Status == <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#u4u0">SUB_STATUS_PLAY</a>)
00283 {
00284 first->Status = <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#u4u2">SUB_STATUS_FADEOUT</a>;
00285 first->FadeStart = now;
00286 doFade = <font class="keyword">true</font>;
00287 }
00288 <font class="keywordflow">else</font> <font class="keywordflow">if</font> (first->Status == <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#u4u3">SUB_STATUS_FADEIN</a>)
00289 {
00290 first->Status = <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#u4u2">SUB_STATUS_FADEOUT</a>;
00291 <font class="comment">// Replace fade start date to smoosly reverse the fade.</font>
00292 first->FadeStart = now - (first->FadeStart - first->FilterFadeIn);
00293 doFade = <font class="keyword">true</font>;
00294 }
00295 }
00296 }
00297 }
00298
00299 <font class="keywordflow">if</font> (doFade)
00300 {
00301 <font class="comment">// register for fade in/out</font>
00302 mixer->registerUpdate(<font class="keyword">this</font>);
00303 }
00304
00305 <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o2">_LastCheck</a> = <a class="code" href="classNLMISC_1_1CTime.html#d1">NLMISC::CTime::getLocalTime</a>();
00306
00307 <font class="comment">// set the next event.</font>
00308 mixer->addEvent(<font class="keyword">this</font>, <a class="code" href="classNLSOUND_1_1CBackgroundSource.html#o2">_LastCheck</a> + <a class="code" href="namespaceNLSOUND.html#a19">ENV_CHK_INTERVAL</a>);
00309 }
00310
00311
<a name="l00312"></a><a class="code" href="classNLSOUND_1_1CBackgroundSource.html#c0">00312</a> <font class="keywordtype">bool</font> CBackgroundSource::checkFilter(<font class="keyword">const</font> UAudioMixer::TBackgroundFlags &filter)
00313 {
00314 <font class="comment">// Get the current environnement from the bakgound sound manager.</font>
00315 <font class="keyword">const</font> UAudioMixer::TBackgroundFlags &bg = CAudioMixerUser::instance()->getBackgroundSoundManager()->getBackgroundFlags();
00316
00317 <font class="keywordtype">bool</font> ok = <font class="keyword">true</font>;
00318
00319 <font class="keywordflow">for</font> (uint i=0; i<16; ++i)
00320 ok &= filter.Flags[i] || !bg.Flags[i];
00321
00322 <font class="keywordflow">return</font> ok;
00323 }
00324
00325
00326 } <font class="comment">// NLSOUND</font>
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