[greentarch]

Use IsPlayerInRangeOfPoint
You just need fire station coordinates (/save or /rs ingame)

e.g

pawn Код:

CMD:call911( playerid, params[ ] ) // Example command
{
    // Your commands go here, e.g :
    SendClientMessage( playerid, -1, "You have called 911. Paramedics on building will hear your call. Please wait for respond." );
    // Other things ...
    
    // Now, add this (loop to check players inside 911 building)
    for ( new i, j = GetMaxPlayers( ); i < j; ++ i )
    {
        if ( !IsPlayerConnected( i ) )
            continue;
            
        if ( !IsPlayerInRangeOfPoint( i, 10.0, POSITION_X, POSITION_Y, POSITION_Z ) ) // Change this positions
            continue;
            
        // Passed all checks, play audio stream
        PlayAudioStreamForPlayer( i, "http://example_audio/911.wav" ); // Change to your audio stream
    }
    return true;
}