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<hr><h1>ambiant_source.cpp</h1><a href="ambiant__source_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><pre>00001
00007 <font class="comment">/* Copyright, 2000, 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">#error "Deprecated"</font>
00027 <font class="preprocessor"></font>
00028 <font class="preprocessor">#include "<a class="code" href="stdsound_8h.html">stdsound.h</a>"</font>
00029
00030 <font class="preprocessor">#include "<a class="code" href="ambiant__source_8h.html">ambiant_source.h</a>"</font>
00031 <font class="preprocessor">#include "<a class="code" href="sound_8h.html">sound.h</a>"</font>
00032
00033 <font class="keyword">using</font> <font class="keyword">namespace </font>NLMISC;
00034 <font class="keyword">using</font> <font class="keyword">namespace </font>std;
00035
00036
00037 <font class="keyword">namespace </font>NLSOUND {
00038
00039
00040 <font class="comment">// If this flag is defined, one ambiant sound cannot be the next one to itself</font>
<a name="l00041"></a><a class="code" href="ambiant__source_8cpp.html#a0">00041</a> <font class="preprocessor">#define ENVSOUND_DONT_DUPLICATE_AMBIANT</font>
00042 <font class="preprocessor"></font>
00043
00044 <font class="comment">/*</font>
00045 <font class="comment"> * Constructor</font>
00046 <font class="comment"> */</font>
<a name="l00047"></a><a class="code" href="classNLSOUND_1_1CAmbiantSource.html#a0">00047</a> CAmbiantSource::CAmbiantSource() : _Play(false),
00048 _StereoGain(0.0f),
00049 _Sustain(false),
00050 _RandomSoundChosen(false),
00051 _NextSparseSoundTime(0),
00052 _CrossfadeTime(4000),
00053 _SustainTime(8000),
00054 _SparseAvgPeriod(20000)
00055 {
00056 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a1">AMBIANT_CH1</a>].setLooping( <font class="keyword">true</font> );
00057 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a2">AMBIANT_CH2</a>].setLooping( <font class="keyword">true</font> );
00058 <font class="comment">//_StereoChannels[SPARSE_CH].setLooping( false );</font>
00059
00060 srand( (uint32)CTime::getLocalTime() );
00061 }
00062
00063
00064 <font class="comment">/*</font>
00065 <font class="comment"> * Destructor</font>
00066 <font class="comment"> */</font>
<a name="l00067"></a><a class="code" href="classNLSOUND_1_1CAmbiantSource.html#a1">00067</a> CAmbiantSource::~CAmbiantSource()
00068 {
00069 CAudioMixerUser::instance()->removeMySource( &<a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a1">AMBIANT_CH1</a>] );
00070 CAudioMixerUser::instance()->removeMySource( &<a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a2">AMBIANT_CH2</a>] );
00071 CAudioMixerUser::instance()->removeMySource( &<a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a3">SPARSE_CH</a>] );
00072
00073 <font class="comment">// Delete sounds: now done in CAudioMixerUser::~CAudioMixerUser()</font>
00074 <font class="comment">/*vector<CSound*>::iterator ipsnds;</font>
00075 <font class="comment"> for ( ipsnds=_AmbiantSounds.begin(); ipsnds!=_AmbiantSounds.end(); ++ipsnds )</font>
00076 <font class="comment"> {</font>
00077 <font class="comment"> nldebug( "Deleting ambiant sound" );</font>
00078 <font class="comment"> delete (*ipsnds);</font>
00079 <font class="comment"> }</font>
00080 <font class="comment"> for ( ipsnds=_SparseSounds.begin(); ipsnds!=_SparseSounds.end(); ++ipsnds )</font>
00081 <font class="comment"> {</font>
00082 <font class="comment"> nldebug( "Deleting sparse sound" );</font>
00083 <font class="comment"> delete (*ipsnds);</font>
00084 <font class="comment"> }</font>
00085 <font class="comment"> */</font>
00086 }
00087
00088
00089 <font class="comment">/* Init. You can pass a position vector to link to (if the playable has stereo source(s))</font>
00090 <font class="comment"> * When reading from a stream, call init() *after* serial().</font>
00091 <font class="comment"> */</font>
00092 <font class="keywordtype">void</font> CAmbiantSource::initPos( <font class="keyword">const</font> CVector *posvector )
00093 {
00094 <font class="comment">// Initialize ambiant sound channels</font>
00095 <font class="keywordflow">if</font> ( ! <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o3">_AmbiantSounds</a>.empty() )
00096 {
00097 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a1">AMBIANT_CH1</a>].set3DPositionVector( posvector );
00098 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a1">AMBIANT_CH1</a>].setSound( <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#b1">getRandomSound</a>( <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o3">_AmbiantSounds</a> ) );
00099 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a1">AMBIANT_CH1</a>].setGain( 0.0f );
00100 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a1">AMBIANT_CH1</a>].setPriority( <a class="code" href="namespaceNLSOUND.html#a82a13">LowPri</a>);
00101 CAudioMixerUser::instance()->addSource( &<a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a1">AMBIANT_CH1</a>] );
00102 CAudioMixerUser::instance()->giveTrack( &<a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a1">AMBIANT_CH1</a>] );
00103
00104 <font class="keywordflow">if</font> ( <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o3">_AmbiantSounds</a>.size() > 1 )
00105 {
00106 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a2">AMBIANT_CH2</a>].set3DPositionVector( posvector );
00107 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a2">AMBIANT_CH2</a>].setSound( <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#b1">getRandomSound</a>( <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o3">_AmbiantSounds</a> ) );
00108 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a2">AMBIANT_CH2</a>].setGain( 0.0f );
00109 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a2">AMBIANT_CH2</a>].setPriority( <a class="code" href="namespaceNLSOUND.html#a82a13">LowPri</a>);
00110 CAudioMixerUser::instance()->addSource( &<a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a2">AMBIANT_CH2</a>] );
00111 CAudioMixerUser::instance()->giveTrack( &<a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a2">AMBIANT_CH2</a>] );
00112 }
00113 }
00114
00115 <font class="comment">// Initialize sparse sounds channel</font>
00116 <font class="keywordflow">if</font> ( ! <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o4">_SparseSounds</a>.empty() )
00117 {
00118 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a3">SPARSE_CH</a>].set3DPositionVector( posvector );
00119 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a3">SPARSE_CH</a>].setPriority( <a class="code" href="namespaceNLSOUND.html#a82a13">LowPri</a> );
00120 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a3">SPARSE_CH</a>].setSound( <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#b1">getRandomSound</a>( <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o4">_SparseSounds</a> ) );
00121 CAudioMixerUser::instance()->addSource( &<a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a3">SPARSE_CH</a>] );
00122 CAudioMixerUser::instance()->giveTrack( &<a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a3">SPARSE_CH</a>] );
00123 }
00124 }
00125
00126
00127 <font class="comment">/*</font>
00128 <font class="comment"> * Enable (play with high priority) and set general gain, or disable (stop and set low priority).</font>
00129 <font class="comment"> */</font>
<a name="l00130"></a><a class="code" href="classNLSOUND_1_1CAmbiantSource.html#a4">00130</a> <font class="keywordtype">void</font> CAmbiantSource::enable( <font class="keywordtype">bool</font> toplay, <font class="keywordtype">float</font> gain )
00131 {
00132 <font class="comment">// Calc position in cycle</font>
00133 <font class="keywordtype">bool</font> crossfade;
00134 uint32 leadchannel;
00135 <font class="keywordflow">if</font> ( <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o3">_AmbiantSounds</a>.size() > 1 )
00136 {
00137 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#b0">calcPosInCycle</a>( crossfade, leadchannel );
00138 }
00139 <font class="keywordflow">else</font>
00140 {
00141 crossfade = <font class="keyword">false</font>;
00142 leadchannel = <a class="code" href="env__sound__user_8h.html#a1">AMBIANT_CH1</a>;
00143 }
00144
00145 <font class="comment">// Enable/disable</font>
00146 <font class="keywordflow">if</font> ( toplay )
00147 {
00148 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o2">_StereoGain</a> = gain;
00149
00150 <font class="keywordflow">if</font> ( ! <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o0">_Play</a> )
00151 {
00152 <font class="comment">// Start lead channel</font>
00153 <font class="keywordflow">if</font> ( <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[leadchannel].getSound() != NULL )
00154 {
00155 <a class="code" href="debug_8h.html#a0">nldebug</a>( <font class="stringliteral">"AM: Envsound: Switch on channel %u"</font>, leadchannel );
00156 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[leadchannel].setPriority( <a class="code" href="namespaceNLSOUND.html#a82a11">HighPri</a> ) ;
00157 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[leadchannel].play();
00158 }
00159
00160 <font class="comment">// If crossfading, start back channel</font>
00161 <font class="keywordflow">if</font> ( crossfade && (<a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[1-leadchannel].getSound() != NULL) )
00162 {
00163 <a class="code" href="debug_8h.html#a0">nldebug</a>( <font class="stringliteral">"AM: Envsound: Switch on channel %u"</font>, 1-leadchannel );
00164 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[1-leadchannel].setPriority( <a class="code" href="namespaceNLSOUND.html#a82a11">HighPri</a> ) ;
00165 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[1-leadchannel].play();
00166 }
00167
00168 <font class="comment">// Calc when the next spare sound will play</font>
00169 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#b2">calcRandomSparseSoundTime</a>( NULL );
00170
00171 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o0">_Play</a> = <font class="keyword">true</font>;
00172 }
00173 <font class="comment">// The SPARSE_CH is added only when needed</font>
00174 }
00175 <font class="keywordflow">else</font>
00176 {
00177 <font class="keywordflow">if</font> ( _Play )
00178 {
00179 <font class="comment">// Stop lead channel</font>
00180 <font class="keywordflow">if</font> ( <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[leadchannel].getSound() != NULL )
00181 {
00182 <a class="code" href="debug_8h.html#a0">nldebug</a>( <font class="stringliteral">"AM: Envsound: Switch off channel %u"</font>, leadchannel );
00183 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[leadchannel].stop();
00184 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[leadchannel].setPriority( <a class="code" href="namespaceNLSOUND.html#a82a13">LowPri</a> );
00185 }
00186
00187 <font class="comment">// If crossfading, stop back channel</font>
00188 <font class="keywordflow">if</font> ( crossfade && (<a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[1-leadchannel].getSound() != NULL) )
00189 {
00190 <a class="code" href="debug_8h.html#a0">nldebug</a>( <font class="stringliteral">"AM: Envsound: Switch off channel %u"</font>, 1-leadchannel );
00191 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[1-leadchannel].stop();
00192 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[1-leadchannel].setPriority( <a class="code" href="namespaceNLSOUND.html#a82a13">LowPri</a> );
00193 }
00194
00195 <font class="comment">// Stop spare channel, anyway</font>
00196 <font class="keywordflow">if</font> ( <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a3">SPARSE_CH</a>].getSound() != NULL )
00197 {
00198 <a class="code" href="debug_8h.html#a0">nldebug</a>( <font class="stringliteral">"AM: Envsound: Switch off sparse channel"</font> );
00199 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a3">SPARSE_CH</a>].stop();
00200 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a3">SPARSE_CH</a>].setPriority( <a class="code" href="namespaceNLSOUND.html#a82a13">LowPri</a> );
00201 }
00202
00203 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o0">_Play</a> = <font class="keyword">false</font>;
00204 }
00205 }
00206 }
00207
00208
00209 <font class="comment">/*</font>
00210 <font class="comment"> * Calc pos in cycle</font>
00211 <font class="comment"> */</font>
<a name="l00212"></a><a class="code" href="classNLSOUND_1_1CAmbiantSource.html#b0">00212</a> <a class="code" href="namespaceNLMISC.html#a183">TTime</a> CAmbiantSource::calcPosInCycle( <font class="keywordtype">bool</font>& crossfade, uint32& leadchannel )
00213 {
00214 <a class="code" href="namespaceNLMISC.html#a183">TTime</a> pos = CTime::getLocalTime();
00215 uint32 cycletime = <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o9">_CrossfadeTime</a> + <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o10">_SustainTime</a>;
00216 pos = pos % (cycletime*2);
00217
00218 <font class="comment">// Calc which channel will be the lead one</font>
00219 <font class="keywordflow">if</font> ( pos < cycletime )
00220 {
00221 leadchannel = 0;
00222 }
00223 <font class="keywordflow">else</font>
00224 {
00225 leadchannel = 1;
00226 pos = pos - (cycletime);
00227 }
00228
00229 <font class="comment">// Calc if the pos is in the first part (crossfade) or in the other part (sustain)</font>
00230 crossfade = ( pos < <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o9">_CrossfadeTime</a> );
00231
00232 <font class="keywordflow">return</font> pos;
00233 }
00234
00235
00236 <font class="comment">/*</font>
00237 <font class="comment"> * Update the stereo mix (call evenly)</font>
00238 <font class="comment"> */</font>
<a name="l00239"></a><a class="code" href="classNLSOUND_1_1CAmbiantSource.html#a3">00239</a> <font class="keywordtype">void</font> CAmbiantSource::update()
00240 {
00241 <font class="keywordflow">if</font> ( (!<a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o0">_Play</a>) || (<a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o2">_StereoGain</a>==0.0f) )
00242 {
00243 <font class="keywordflow">return</font>;
00244 }
00245
00246 <font class="comment">// Calc pos in cycle</font>
00247 <font class="keywordtype">bool</font> crossfade;
00248 uint32 leadchannel, backchannel=0;
00249 <a class="code" href="namespaceNLMISC.html#a183">TTime</a> posInCycle=0;
00250 <font class="keywordflow">if</font> ( <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o3">_AmbiantSounds</a>.size() > 1 )
00251 {
00252 posInCycle = <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#b0">calcPosInCycle</a>( crossfade, leadchannel );
00253 backchannel = 1 - leadchannel;
00254 }
00255 <font class="keywordflow">else</font>
00256 {
00257 <font class="comment">// If there is less than 2 sounds, no crossfade, always sustain (a single sound must be looping)</font>
00258 crossfade = <font class="keyword">false</font>;
00259 leadchannel = <a class="code" href="env__sound__user_8h.html#a1">AMBIANT_CH1</a>;
00260 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o6">_Sustain</a> = <font class="keyword">true</font>;
00261 }
00262
00263 <font class="comment">// Crossfade the first two sources</font>
00264 <font class="keywordflow">if</font> ( crossfade )
00265 {
00266 <font class="comment">// Attack</font>
00267 <font class="keywordtype">float</font> ratio = (float)posInCycle / (float)<a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o9">_CrossfadeTime</a>;
00268 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[leadchannel].setRelativeGain( ratio*<a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o2">_StereoGain</a> );
00269 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[backchannel].setRelativeGain( (1.0f - ratio)*<a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o2">_StereoGain</a> );
00270
00271 <font class="comment">// Start next sound</font>
00272 <font class="keywordflow">if</font> ( _Sustain )
00273 {
00274 <a class="code" href="debug_8h.html#a0">nldebug</a>( <font class="stringliteral">"AM: EnvSound: Beginning crossfade: channel #%u rising"</font>, leadchannel );
00275 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[leadchannel].setPriority( <a class="code" href="namespaceNLSOUND.html#a82a11">HighPri</a> ) ;
00276 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[leadchannel].play();
00277 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o6">_Sustain</a> = <font class="keyword">false</font>;
00278 }
00279 }
00280 <font class="keywordflow">else</font>
00281 {
00282 <font class="comment">// Set sustain gain (takes into account the possible changes to _StereoGain)</font>
00283 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[leadchannel].setRelativeGain( <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o2">_StereoGain</a> );
00284
00285 <font class="comment">// Prepare next ambiant sound</font>
00286 <font class="keywordflow">if</font> ( ! <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o6">_Sustain</a> )
00287 {
00288 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o6">_Sustain</a> = <font class="keyword">true</font>;
00289 <a class="code" href="namespaceNLSOUND.html#a8">TSoundId</a> nextsound = <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#b1">getRandomSound</a>( <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o3">_AmbiantSounds</a> );
00290 <font class="preprocessor">#ifdef ENVSOUND_DONT_DUPLICATE_AMBIANT</font>
00291 <font class="preprocessor"></font> <a class="code" href="debug_8h.html#a6">nlassert</a>( <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o3">_AmbiantSounds</a>.size() > 1 ); <font class="comment">// or infinite loop</font>
00292 <font class="keywordflow">while</font> ( nextsound == <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[leadchannel].getSound() )
00293 {
00294 <a class="code" href="debug_8h.html#a0">nldebug</a>( <font class="stringliteral">"AM: EnvSound: Avoiding ambiant sound duplication..."</font> );
00295 nextsound = <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#b1">getRandomSound</a>( <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o3">_AmbiantSounds</a> );
00296 }
00297 <font class="preprocessor">#endif</font>
00298 <font class="preprocessor"></font> <a class="code" href="debug_8h.html#a0">nldebug</a>( <font class="stringliteral">"AM: EnvSound: Sustain: channel #1"</font> );
00299 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[backchannel].setRelativeGain( 0.0f );
00300 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[backchannel].stop(); <font class="comment">// we don't set the priority to LowPri</font>
00301 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[backchannel].setSound( nextsound );
00302 }
00303 }
00304
00305 <font class="comment">// Add a short random sound into the third source</font>
00306 <font class="keywordflow">if</font> ( ! <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o4">_SparseSounds</a>.empty() )
00307 {
00308 <font class="comment">// Set sustain gain (takes into account the possible changes to _StereoGain)</font>
00309 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a3">SPARSE_CH</a>].setRelativeGain( <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o2">_StereoGain</a> );
00310
00311 <font class="comment">// Start next sparse sound</font>
00312 <a class="code" href="namespaceNLMISC.html#a183">TTime</a> now = CTime::getLocalTime();
00313 <font class="keywordflow">if</font> ( now > <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o8">_NextSparseSoundTime</a> )
00314 {
00315 <a class="code" href="namespaceNLSOUND.html#a8">TSoundId</a> nextsound = <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#b1">getRandomSound</a>( <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o4">_SparseSounds</a> );
00316 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a3">SPARSE_CH</a>].stop();
00317 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a3">SPARSE_CH</a>].setSound( nextsound );
00318 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a3">SPARSE_CH</a>].setPriority( <a class="code" href="namespaceNLSOUND.html#a82a12">MidPri</a> );
00319 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a3">SPARSE_CH</a>].play();
00320 <a class="code" href="debug_8h.html#a0">nldebug</a>( <font class="stringliteral">"AM: EnvSound: Playing sparse sound"</font> );
00321 <font class="keywordflow">if</font> ( <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a3">SPARSE_CH</a>].getTrack() == NULL )
00322 {
00323 <a class="code" href="debug_8h.html#a0">nldebug</a>( <font class="stringliteral">"AM: Ensound: Switch on sparse channel"</font> );
00324 <a class="code" href="debug_8h.html#a6">nlassert</a>( <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o1">_StereoChannels</a>[<a class="code" href="env__sound__user_8h.html#a3">SPARSE_CH</a>].getSound() != NULL );
00325 }
00326 <font class="comment">// Does not leave the track</font>
00327 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#b2">calcRandomSparseSoundTime</a>( nextsound );
00328 }
00329 }
00330 }
00331
00332
00333 <font class="comment">/*</font>
00334 <font class="comment"> * Select a random sound in a bank</font>
00335 <font class="comment"> */</font>
<a name="l00336"></a><a class="code" href="classNLSOUND_1_1CAmbiantSource.html#b1">00336</a> <a class="code" href="namespaceNLSOUND.html#a8">TSoundId</a> CAmbiantSource::getRandomSound( <font class="keyword">const</font> std::vector<CSound*>& bank )<font class="keyword"> const</font>
00337 <font class="keyword"></font>{
00338 <a class="code" href="debug_8h.html#a6">nlassert</a>( ! bank.empty() );
00339 <font class="comment">// Note: does not work with a very big size (rand()*bank.size() would overflow)</font>
00340 uint32 <a class="code" href="driver__opengl__extension__def_8h.html#a385">r</a> = rand()*bank.size()/(RAND_MAX+1);
00341 <a class="code" href="debug_8h.html#a6">nlassert</a>( <a class="code" href="driver__opengl__extension__def_8h.html#a385">r</a> < bank.size() );
00342 <a class="code" href="debug_8h.html#a0">nldebug</a>( <font class="stringliteral">"AM: EnvSound: Prepared random sound number %u of %u"</font>, <a class="code" href="driver__opengl__extension__def_8h.html#a385">r</a>, bank.size()-1 );
00343
00344 <font class="keywordflow">return</font> bank[<a class="code" href="driver__opengl__extension__def_8h.html#a385">r</a>];
00345 }
00346
00347
00348
00349
00350 <font class="comment">/*</font>
00351 <font class="comment"> * Calculate the next time a sparse sound plays</font>
00352 <font class="comment"> */</font>
<a name="l00353"></a><a class="code" href="classNLSOUND_1_1CAmbiantSource.html#b2">00353</a> <font class="keywordtype">void</font> CAmbiantSource::calcRandomSparseSoundTime( <a class="code" href="namespaceNLSOUND.html#a8">TSoundId</a> currentsparesound )
00354 {
00355 uint32 delay = (uint)((float)rand() * (float)(<a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o11">_SparseAvgPeriod</a>*2) / (float)RAND_MAX);
00356
00357 <font class="comment">// Check the next sound will play after the current one</font>
00358 <font class="keywordflow">if</font> ( currentsparesound != NULL )
00359 {
00360 uint32 soundlength = currentsparesound->getDuration();
00361 <font class="keywordflow">if</font> ( delay <= soundlength )
00362 {
00363 delay = soundlength+1;
00364 }
00365 }
00366
00367 <a class="code" href="debug_8h.html#a0">nldebug</a>( <font class="stringliteral">"AM: EnvSound: Next sparse sound will play in %u ms"</font>, delay );
00368 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o8">_NextSparseSoundTime</a> = CTime::getLocalTime() + delay;
00369 }
00370
00371
00372 <font class="comment">/*</font>
00373 <font class="comment"> * Serialize</font>
00374 <font class="comment"> */</font>
00375 <font class="comment">/*</font>
00376 <font class="comment">void CAmbiantSource::serial( NLMISC::IStream& s )</font>
00377 <font class="comment">{</font>
00378 <font class="comment"> // If you change this, increment the version number in CEnvSoundUser::load() !</font>
00379 <font class="comment"></font>
00380 <font class="comment"> // Constants</font>
00381 <font class="comment"> s.serial( _CrossfadeTime );</font>
00382 <font class="comment"> s.serial( _SustainTime );</font>
00383 <font class="comment"> s.serial( _SparseAvgPeriod );</font>
00384 <font class="comment"></font>
00385 <font class="comment"> // Stereo sound banks (sounds allocated here once per pointer, deleted by CAudioMixerUser::~CAudioMixerUser())</font>
00386 <font class="comment"> s.serialContPtr( _AmbiantSounds );</font>
00387 <font class="comment"> s.serialContPtr( _SparseSounds );</font>
00388 <font class="comment"></font>
00389 <font class="comment"> // Register within the audio mixer for deletion at the end</font>
00390 <font class="comment"> vector<CSound*>::iterator ips;</font>
00391 <font class="comment"> for ( ips=_AmbiantSounds.begin(); ips!=_AmbiantSounds.end(); ++ips )</font>
00392 <font class="comment"> {</font>
00393 <font class="comment"> CAudioMixerUser::instance()->addAmbiantSound( (*ips) );</font>
00394 <font class="comment"> }</font>
00395 <font class="comment"> for ( ips=_SparseSounds.begin(); ips!=_SparseSounds.end(); ++ips )</font>
00396 <font class="comment"> {</font>
00397 <font class="comment"> CAudioMixerUser::instance()->addAmbiantSound( (*ips) );</font>
00398 <font class="comment"> }</font>
00399 <font class="comment">}</font>
00400 <font class="comment"></font>
00401 <font class="comment">*/</font>
00402
00403 <font class="comment">/*</font>
00404 <font class="comment"> * Set properties (EDIT)</font>
00405 <font class="comment"> */</font>
<a name="l00406"></a><a class="code" href="classNLSOUND_1_1CAmbiantSource.html#a6">00406</a> <font class="keywordtype">void</font> CAmbiantSource::setProperties( std::vector<TSoundId>& ambiantsounds,
00407 std::vector<TSoundId>& sparsesounds,
00408 uint32 crossfadeTimeMs, uint32 sustainTimeMs,
00409 uint32 sparseAvgPeriodMs )
00410 {
00411 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o3">_AmbiantSounds</a> = ambiantsounds;
00412 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o4">_SparseSounds</a> = sparsesounds;
00413 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o9">_CrossfadeTime</a> = crossfadeTimeMs;
00414 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o10">_SustainTime</a> = sustainTimeMs;
00415 <a class="code" href="classNLSOUND_1_1CAmbiantSource.html#o11">_SparseAvgPeriod</a> = sparseAvgPeriodMs;
00416 }
00417
00418
00419 } <font class="comment">// NLSOUND</font>
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