ACE3/addons/cookoff/functions/fnc_detonateAmmunition.sqf

#include "..\script_component.hpp"
/*
 * Author: Glowbal
 * Detonates ammunition from a vehicle until no ammo left
 *
 * Arguments:
 * 0: vehicle <OBJECT>
 * 1: Ammo Array <ARRAY>
 * - 0: Magazine Classname <STRING>
 * - 1: Ammo Count <NUMBER>
 * 2: Total Ammo Count <NUMBER>
 *
 * Return Value:
 * None
 *
 * Example:
 * [_vehicle, magazinesAmmo _vehicle] call ace_cookoff_fnc_detonateAmmunition
 *
 * Public: No
 */

params ["_vehicle", "_magazines", "_totalAmmo"];

if (GVAR(enable) == 0) exitWith {};
if !(GVAR(enableAmmoCookoff)) exitWith {};

if (isNull _vehicle) exitWith {}; // vehicle got deleted
if (_magazines isEqualTo []) exitWith {}; // nothing to detonate anymore
if (underwater _vehicle) exitWith {};

private _magazineIndex = floor random(count _magazines);
private _magazine = _magazines select _magazineIndex;
_magazine params ["_magazineClassname", "_amountOfMagazines"];

if (_amountOfMagazines < 0) exitWith {
    ERROR_1("mag with no ammo - %1",_magazine);
};
private _removed = _amountOfMagazines min floor(1 + random(6 / GVAR(ammoCookoffDuration)));

_amountOfMagazines = _amountOfMagazines - _removed;
if (_amountOfMagazines <= 0) then {
    _magazines deleteAt _magazineIndex;
} else {
    _magazine set [1, _amountOfMagazines]; // clear out the magazine
};
private _timeBetweenAmmoDetonation = (((random 10) / (sqrt _totalAmmo)) min MAX_TIME_BETWEEN_AMMO_DET) max 0.1;
TRACE_2("",_totalAmmo,_timeBetweenAmmoDetonation);
_totalAmmo = _totalAmmo - _removed;

private _ammo = getText (configFile >> "CfgMagazines" >> _magazineClassname >> "ammo");
private _ammoCfg = configFile >> "CfgAmmo" >> _ammo;

private _speedOfAmmo = getNumber (configFile >> "CfgMagazines" >> _magazineClassname >> "initSpeed");
private _simType = getText (_ammoCfg >> "simulation");

private _effect2pos = _vehicle selectionPosition "destructionEffect2";

private _spawnProjectile = {
    params ["_vehicle", "_ammo", "_speed", "_flyAway"];

    private _spawnPos = _vehicle modelToWorld [-0.2 + (random 0.4), -0.2 + (random 0.4), random 3];
    if (_spawnPos select 2 < 0) then {
        _spawnPos set [2, 0];
    };

    private _projectile = createVehicle [_ammo, _spawnPos, [], 0, "CAN_COLLIDE"];
    if (_flyAway) then {
        private _vectorAmmo = [(-1 + (random 2)), (-1 + (random 2)), -0.2 + (random 1)];
        private _velVec = _vectorAmmo vectorMultiply _speed;
        _projectile setVectorDir _velVec;
        _projectile setVelocity _velVec;
    } else {
        _projectile setDamage 1;
    };

    _projectile;
};

private _speed = random (_speedOfAmmo / 10) max 1;
_simType = toLower _simType;
switch (_simType) do {
    case ("shotbullet"): {
        [QGVAR(playCookoffSound), [_vehicle, _simType]] call CBA_fnc_globalEvent;
        if (random 1 < 0.6) then {
            [_vehicle, _ammo, _speed, true] call _spawnProjectile;
        };
    };
    case ("shotshell"): {
        [QGVAR(playCookoffSound), [_vehicle, _simType]] call CBA_fnc_globalEvent;
        if (random 1 < 0.15) then {
            [_vehicle, _ammo, _speed, true] call _spawnProjectile;
        };
    };
    case ("shotgrenade"): {
        if (random 1 < 0.9) then {
            _speed = 0;
        };
        [_vehicle, _ammo, _speed, random 1 < 0.5] call _spawnProjectile;
    };
    case ("shotrocket");
    case ("shotmissile");
    case ("shotsubmunitions"): {
        if (random 1 < 0.1) then {
            [QGVAR(playCookoffSound), [_vehicle, _simType]] call CBA_fnc_globalEvent;
            [_vehicle, _ammo, _speed, random 1 < 0.3] call _spawnProjectile;
        } else {
            createvehicle ["ACE_ammoExplosionLarge", (_vehicle modelToWorld _effect2pos), [], 0 , "CAN_COLLIDE"];
        };
    };
    case ("shotmine");
    case ("shotdirectionalbomb"): {
        if (random 1 < 0.5) then {
            // Not all explosives detonate on destruction, some have scripted alternatives
            private _scripted = getNumber (_ammoCfg >> "triggerWhenDestroyed") == 1;
            if !(_scripted) then {
                _ammo = getText (_ammoCfg >> "ace_explosives_Explosive");
            };
            // If a scripted alternative doesn't exist use generic explosion
            if (_ammo != "") then {
                [_vehicle, _ammo, 0, false] call _spawnProjectile;
            } else {
                createvehicle ["SmallSecondary", (_vehicle modelToWorld _effect2pos), [], 0 , "CAN_COLLIDE"];
            };
        };
    };
    case ("shotilluminating"): {
        if (random 1 < 0.15) then {
            [_vehicle, _ammo, _speed, random 1 < 0.3] call _spawnProjectile;
        };
    };
};
[FUNC(detonateAmmunition), [_vehicle, _magazines, _totalAmmo], _timeBetweenAmmoDetonation] call CBA_fnc_waitAndExecute;