Method init

src/Battlescape/ProjectileFlyBState.cpp:69–272

* Initializes the sequence: * - checks if the shot is valid, * - calculates the base accuracy. */

 * - calculates the base accuracy.
 */
void ProjectileFlyBState::init()
{
	if (_initialized) return;
	_initialized = true;

	BattleItem *weapon = _action.weapon;
	_projectileItem = 0;

	if (!weapon) // can't shoot without weapon
	{
		_parent->popState();
		return;
	}

	if (!_parent->getSave()->getTile(_action.target)) // invalid target position
	{
		_parent->popState();
		return;
	}

	if (_parent->getPanicHandled() &&
		_action.type != BA_HIT &&
		_action.type != BA_STUN &&
		_action.actor->getTimeUnits() < _action.TU)
	{
		_action.result = "STR_NOT_ENOUGH_TIME_UNITS";
		_parent->popState();
		return;
	}

	_unit = _action.actor;

	_ammo = weapon->getAmmoItem();

	if (_unit->isOut() || _unit->getHealth() == 0 || _unit->getHealth() < _unit->getStunlevel())
	{
		// something went wrong - we can't shoot when dead or unconscious, or if we're about to fall over.
		_parent->popState();
		return;
	}

	// reaction fire
	if (_unit->getFaction() != _parent->getSave()->getSide())
	{
		// no ammo or target is dead: give the time units back and cancel the shot.
		if (_ammo == 0
			|| !_parent->getSave()->getTile(_action.target)->getUnit()
			|| _parent->getSave()->getTile(_action.target)->getUnit()->isOut()
			|| _parent->getSave()->getTile(_action.target)->getUnit() != _parent->getSave()->getSelectedUnit())
		{
			_unit->setTimeUnits(_unit->getTimeUnits() + _unit->getActionTUs(_action.type, _action.weapon));
			_parent->popState();
			return;
		}
	}

	// autoshot will default back to snapshot if it's not possible
	if (weapon->getRules()->getAccuracyAuto() == 0 && _action.type == BA_AUTOSHOT)