Function S_PickChannel

code/client/snd_dma.cpp:1093–1160

================= S_PickChannel ================= */

=================
*/
channel_t *S_PickChannel(int entnum, int entchannel)
{
    int			ch_idx;
	channel_t	*ch, *firstToDie;
	qboolean	foundChan = qfalse;

#ifdef USE_OPENAL
	if (s_UseOpenAL)
		return S_OpenALPickChannel(entnum, entchannel);
#endif

	if ( entchannel<0 ) {
		Com_Error (ERR_DROP, "S_PickChannel: entchannel<0");
	}

	// Check for replacement sound, or find the best one to replace

    firstToDie = &s_channels[0];

	for ( int pass = 0; (pass < ((entchannel == CHAN_AUTO || entchannel == CHAN_LESS_ATTEN)?1:2)) && !foundChan; pass++ )
	{
		for (ch_idx = 0, ch = &s_channels[0]; ch_idx < MAX_CHANNELS ; ch_idx++, ch++ )
		{
			if ( entchannel == CHAN_AUTO || entchannel == CHAN_LESS_ATTEN || pass > 0 )
			{//if we're on the second pass, just find the first open chan
				if ( !ch->thesfx )
				{//grab the first open channel
					firstToDie = ch;
					break;
				}

			}
			else if ( ch->entnum == entnum && S_CheckChannelStomp( ch->entchannel, entchannel ) )
			{
				// always override sound from same entity
				if ( s_show->integer == 1 && ch->thesfx ) {
					Com_Printf( S_COLOR_YELLOW"...overrides %s\n", ch->thesfx->sSoundName );
					ch->thesfx = 0;	//just to clear the next error msg
				}
				firstToDie = ch;
				foundChan = qtrue;
				break;
			}

			// don't let anything else override local player sounds
			if ( ch->entnum == listener_number 	&& entnum != listener_number && ch->thesfx) {
				continue;
			}

			// don't override loop sounds
			if ( ch->loopSound ) {
				continue;
			}

			if ( ch->startSample < firstToDie->startSample ) {
				firstToDie = ch;
			}
		}