Method Update

TombEngine/Game/effects/hair.cpp:40–125

	}

	void HairUnit::Update(const ItemInfo& item, int hairUnitID)
	{
		for (auto& segment : Segments)
			segment.StoreInterpolationData();

		const auto& player = GetLaraInfo(item);

		bool isYoung = (g_GameFlow->GetLevel(CurrentLevel)->GetLaraType() == LaraType::Young);

		// Get world matrix from head bone.
		auto worldMatrix = Matrix::Identity;
		g_Renderer.GetBoneMatrix(item.Index, GetRootMeshID(hairUnitID), &worldMatrix);

		// Apply base offset to world matrix.
		auto relOffset = GetRelBaseOffset(hairUnitID, isYoung);
		worldMatrix = Matrix::CreateTranslation(relOffset) * worldMatrix;

		// Use player's head bone orientation as base.
		auto baseOrient = Geometry::ConvertDirectionToQuat(-Geometry::ConvertQuatToDirection(GetBoneOrientation(item, LM_HEAD))) * item.Pose.Orientation.ToQuaternion();

		// Set position of base segment.
		Segments[0].Position = worldMatrix.Translation();

		if (!IsInitialized)
		{
			// Update segment positions.
			for (int i = 0; i < Segments.size() - 1; i++)
			{
				auto& segment = Segments[i];
				auto& nextSegment = Segments[i + 1];

				// NOTE: Joint offset determines segment length.
				auto jointOffset = GetJointOffset(ObjectID, i, true);

				worldMatrix = Matrix::CreateTranslation(segment.Position);
				worldMatrix = Matrix::CreateFromQuaternion(segment.Orientation) * worldMatrix;
				worldMatrix = Matrix::CreateTranslation(jointOffset) * worldMatrix;

				nextSegment.Position = worldMatrix.Translation();
			}

			IsInitialized = true;
		}
		else
		{
			// Get water height.
			auto pos = item.Pose.Position + Vector3i(GetWaterProbeOffset(item));
			int roomNumber = item.RoomNumber;
			int waterHeight = GetPointCollision(pos, roomNumber).GetWaterTopHeight();

			// Get collision spheres.
			auto spheres = GetSpheres(item);

			// Update segments.
			for (int i = 1; i < Segments.size(); i++)
			{
				auto& segment = Segments[i];
				auto& prevSegment = Segments[i - 1];