1.1 --- a/extensions/sdktools/vsound.cpp	Sat Sep 03 14:11:38 2011 -0400
     1.2 +++ b/extensions/sdktools/vsound.cpp	Sat Sep 03 14:18:08 2011 -0400
     1.3 @@ -782,6 +782,14 @@
     1.4  	return 1;
     1.5  }
     1.6  
     1.7 +static cell_t smn_GetDistGainFromSoundLevel(IPluginContext *pContext, const cell_t *params)
     1.8 +{
     1.9 +	int decibel = params[1];
    1.10 +	float distance = sp_ctof(params[2]);
    1.11 +
    1.12 +	return sp_ftoc(engsound->GetDistGainFromSoundLevel(soundlevel_t)decibel, distance));
    1.13 +}
    1.14 +
    1.15  sp_nativeinfo_t g_SoundNatives[] = 
    1.16  {
    1.17  	{"EmitAmbientSound",		EmitAmbientSound},
    1.18 @@ -795,5 +803,6 @@
    1.19  	{"AddNormalSoundHook",		smn_AddNormalSoundHook},
    1.20  	{"RemoveAmbientSoundHook",	smn_RemoveAmbientSoundHook},
    1.21  	{"RemoveNormalSoundHook",	smn_RemoveNormalSoundHook},
    1.22 +	{"GetDistGainFromSoundLevel", smn_GetDistGainFromSoundLevel},
    1.23  	{NULL,						NULL},
    1.24  };

     2.1 --- a/plugins/include/sdktools_sound.inc	Sat Sep 03 14:11:38 2011 -0400
     2.2 +++ b/plugins/include/sdktools_sound.inc	Sat Sep 03 14:18:08 2011 -0400
     2.3 @@ -257,6 +257,15 @@
     2.4  				 bool:updatePos = true,
     2.5  				 Float:soundtime = 0.0,
     2.6  				 any:...);
     2.7 +				 
     2.8 +/**
     2.9 + *Calculates gain of sound on given distance with given sound level in decibel
    2.10 + *
    2.11 + * @param soundlevel	decibel of sound, like SNDLEVEL_NORMAL or integer value
    2.12 + * @param distance	distance of sound to calculate, not meter or feet, but Source Engine`s normal Coordinate unit
    2.13 + * @return			gain of sound. you can multiply this with original sound`s volume to calculate volume on given distance
    2.14 + */
    2.15 +native Float:GetDistGainFromSoundLevel(soundlevel, Float:distance);
    2.16  
    2.17  /**
    2.18   * Called when an ambient sound is about to be emitted to one or more clients.