ACE3/addons/missionmodules/functions/fnc_moduleAmbianceSound.sqf

/*
 * Author: Glowbal
 * Plays synchronized ambiance sounds while the module is alive.
 *
 * Arguments:
 * 0: Logic <LOGIC>
 * 1: Units <ARRAY>
 * 2: Activated <BOOL>
 *
 * Return Value:
 * Nothing
 *
 * Example:
 * N/A
 *
 * Public: No
 */

#include "script_component.hpp"

private ["_logic", "_units", "_activated","_ambianceSounds", "_soundFiles", "_minimalDistance","_maximalDistance", "_minimalDistance", "_maxDelayBetweenSounds", "_allUnits", "_newPos", "_targetUnit", "_soundToPlay", "_soundPath", "_unparsedSounds", "_list", "_splittedList", "_nilCheckPassedList"];
_logic = [_this,0,objNull,[objNull]] call BIS_fnc_param;
_units = [_this,1,[],[[]]] call BIS_fnc_param;
_activated = [_this,2,true,[true]] call BIS_fnc_param;

// We only play this on the locality of the logic, since the sounds are broadcasted across the network
if (_activated && local _logic) then {
    _ambianceSounds = [];
    _unparsedSounds = _logic getVariable ["soundFiles", ""];
    _minimalDistance = (_logic getVariable ["minimalDistance", 400]) max 1;
    _maximalDistance = (_logic getVariable ["maximalDistance", 10]) max _minimalDistance;
    _minDelayBetweensounds = (_logic getVariable ["minimalDelay", 10]) max 1;
    _maxDelayBetweenSounds = (_logic getVariable ["maximalDelay", 170]) max _minDelayBetweensounds;
    _volume = (_logic getVariable ["soundVolume", 30]) max 1;
    _followPlayers = _logic getVariable ["followPlayers", false];

    _splittedList = [_unparsedSounds, ","] call BIS_fnc_splitString;

    _nilCheckPassedList = "";
    {
        _x = [_x] call EFUNC(common,stringRemoveWhiteSpace);
        _splittedList set [_forEachIndex, _x];
    }forEach _splittedList;

    _soundPath = [(str missionConfigFile), 0, -15] call BIS_fnc_trimString;
    {
        if (isClass (missionConfigFile >> "CfgSounds" >> _x)) then {
            _ambianceSounds pushBack (_soundPath + (getArray(missionConfigFile >> "CfgSounds" >> _x >> "sound") select 0));
        } else {
            if (isClass (configFile >> "CfgSounds" >> _x)) then {
                _ambianceSounds pushBack ((getArray(configFile >> "CfgSounds" >> _x >> "sound") select 0));
            };
        };
    }forEach _splittedList;

    if (count _ambianceSounds == 0) exitWith {};
    {
        if !([".", _x, true] call BIS_fnc_inString) then {
            _ambianceSounds set [_forEachIndex, _x + ".wss"];
        };
    }forEach _ambianceSounds;

    [{
        private ["_args", "_logic", "_ambianceSounds", "_minimalDistance", "_maximalDistance", "_minDelayBetweensounds", "_maxDelayBetweenSounds", "_volume", "_followPlayers","_lastTimePlayed", "_newPos"];
        _args = _this select 0;
        _logic = _args select 0;
        _minDelayBetweensounds = _args select 4;
        _maxDelayBetweenSounds = _args select 5;
        _lastTimePlayed = _args select 8;

        if (!alive _logic) exitWith {
            [(_this select 1)] call cba_fnc_removePerFrameHandler;
        };

        if (time - _lastTimePlayed >= ((_minDelayBetweensounds + random(_maxDelayBetweenSounds)) min _maxDelayBetweenSounds)) then {
            _ambianceSounds = _args select 1;
            _minimalDistance = _args select 2;
            _maximalDistance = _args select 3;

            _volume = _args select 6;
            _followPlayers = _args select 7;

            // Find all players in session.
            _allUnits = if (isMultiplayer) then {playableUnits} else {[ACE_player]};

            // Check if there are enough players to even start playing this sound.
            if (count _allUnits > 0) then {

                // Select a target unit at random.
                _targetUnit = _allUnits select (round(random((count _allUnits)-1)));

                // find the position from which we are going to play this sound from.
                _newPos = (getPos _targetUnit);
                if (!_followPlayers) then {
                    _newPos = getPos _logic;
                };

                // Randomize this position.
                if (random(1) >= 0.5) then {
                    if (random(1) >= 0.5) then {
                        _newPos set [0, (_newPos select 0) + (_minimalDistance + random(_maximalDistance))];
                    } else {
                        _newPos set [0, (_newPos select 0) - (_minimalDistance + random(_maximalDistance))];
                    };
                } else {
                    if (random(1) >= 0.5) then {
                        _newPos set [1, (_newPos select 1) + (_minimalDistance + random(_maximalDistance))];
                    } else {
                        _newPos set [1, (_newPos select 1) - (_minimalDistance + random(_maximalDistance))];
                    };
                };

                // If no unit is to close to this position, we will play the sound.
                if ({(_newPos distance _x < (_minimalDistance / 2))}count _allUnits == 0) then {
                    playSound3D [_ambianceSounds select (round(random((count _ambianceSounds)-1))), ObjNull,  false, _newPos, _volume, 1, 1000];
                    _args set [8, time];
                };
            };
        };
    }, 0.1, [_logic, _ambianceSounds, _minimalDistance, _maximalDistance, _minDelayBetweensounds, _maxDelayBetweenSounds, _volume, _followPlayers, time] ] call cba_fnc_addPerFrameHandler;
};

true;