Function UpdateFishSwarm

TombEngine/Objects/TR3/Entity/FishSwarm.cpp:241–441

	}

	void UpdateFishSwarm()
	{
		constexpr auto WATER_SURFACE_OFFSET		= CLICK(0.5f);
		constexpr auto FLEE_VEL					= 20.0f;
		constexpr auto TARGET_REACHED_TOLERANCE = BLOCK(0.5f);

		static const auto SPHERE = BoundingSphere(Vector3::Zero, BLOCK(1 / 8.0f));

		if (FishSwarm.empty())
			return;

		const auto& playerItem = *LaraItem;
		const auto& player = GetLaraInfo(playerItem);

		const FishData* closestFishPtr = nullptr;
		float minDistToTarget = FLT_MAX;
		int minDist = INT_MAX;

		int fishID = 0;
		for (auto& fish : FishSwarm)
		{
			if (fish.Life <= 0.0f)
				continue;

			auto& leaderItem = *fish.LeaderItemPtr;

			if (!TriggerActive(&leaderItem))
			{
				// Remove all fishes associated with this item.
				RemoveFishSwarm(leaderItem);

				// Reset ItemFlags.
				if (leaderItem.HitPoints == NOT_TARGETABLE)
					leaderItem.HitPoints = leaderItem.ItemFlags[5];

				leaderItem.Pose.Position = leaderItem.StartPose.Position;
				leaderItem.ItemFlags[5] = 0;
				return;
			}

			fish.StoreInterpolationData();

			// Increase separation distance for each fish.
			float separationDist = FISH_BASE_SEPARATION_DISTANCE + (fishID * 3);
			fishID += 1;

			if (!leaderItem.ItemFlags[2] && fish.TargetItemPtr == fish.LeaderItemPtr)
			{
				if (!fish.IsPatrolling)
				{
					fish.TargetItemPtr->Pose.Position = GetFishStartPosition(leaderItem);

					if (fish.TargetItemPtr->Pose.Position != Vector3::Zero)
						leaderItem.ItemFlags[2] = 1;
				}
			}

			int enemyVel = (fish.TargetItemPtr != fish.LeaderItemPtr) ? 16.0f : 26.0f;