Function GetFishStartPosition

TombEngine/Objects/TR3/Entity/FishSwarm.cpp:215–239

	}

	static Vector3 GetFishStartPosition(const ItemInfo& item)
	{
		constexpr auto BUFFER					= BLOCK(0.1f);
		constexpr auto SPHEROID_SEMI_MAJOR_AXIS = Vector3(BLOCK(2), BLOCK(1), BLOCK(5));

		auto pos = Random::GeneratePointInSpheroid(item.StartPose.Position.ToVector3(), EulerAngles::Identity, SPHEROID_SEMI_MAJOR_AXIS);

		// Get point collision.
		auto pointColl = GetPointCollision(pos, item.RoomNumber);

		// 1) Test for water room.
		if (!TestEnvironment(ENV_FLAG_WATER, pointColl.GetRoomNumber()))
			return Vector3::Zero;

		// 2) Assess point collision.
		if (pos.y >= (pointColl.GetFloorHeight() - BUFFER) ||
			pos.y <= (pointColl.GetWaterTopHeight() + BUFFER) ||
			pointColl.GetSector().IsWall(item.Pose.Position.x + BUFFER, item.Pose.Position.z + BUFFER) ||
			pointColl.GetSector().IsWall(item.Pose.Position.x - BUFFER, item.Pose.Position.z - BUFFER))
		{
			return Vector3::Zero;
		}

		return pos;
	}

	void UpdateFishSwarm()
	{