Method checkReactionFire

src/Battlescape/TileEngine.cpp:775–816

* Checks if a sniper from the opposing faction sees this unit. The unit with the highest reaction score will be compared with the current unit's reaction score. * If it's higher, a shot is fired when enough time units, a weapon and ammo are available. * @param unit The unit to check reaction fire upon. * @return True if reaction fire took place. */

 * @return True if reaction fire took place.
 */
bool TileEngine::checkReactionFire(BattleUnit *unit)
{
	// reaction fire only triggered when the actioning unit is of the currently playing side, and is still on the map (alive)
	if (unit->getFaction() != _save->getSide() || unit->getTile() == 0)
	{
		return false;
	}

	std::vector<BattleUnit *> spotters = getSpottingUnits(unit);
	bool result = false;

	// not mind controlled, or controlled by the player
	if (unit->getFaction() == unit->getOriginalFaction()
		|| unit->getFaction() != FACTION_HOSTILE)
	{
		// get the first man up to bat.
		BattleUnit *reactor = getReactor(spotters, unit);
		// start iterating through the possible reactors until the current unit is the one with the highest score.
		while (reactor != unit)
		{
			if (!tryReactionSnap(reactor, unit))
			{
				// can't make a reaction snapshot for whatever reason, boot this guy from the vector.
				for (std::vector<BattleUnit *>::iterator i = spotters.begin(); i != spotters.end(); ++i)
				{
					if (*i == reactor)
					{
						spotters.erase(i);
						break;
					}
				}
				// avoid setting result to true, but carry on, just cause one unit can't react doesn't mean the rest of the units in the vector (if any) can't
				reactor = getReactor(spotters, unit);
				continue;
			}
			// nice shot, kid. don't get cocky.
			reactor = getReactor(spotters, unit);
			result = true;
		}
	}
	return result;
}

/**
 * Creates a vector of units that can spot this unit.