Function FireRopeControl

TombEngine/Objects/TR4/Object/FireRope.cpp:94–177

}

void FireRopeControl(short itemNumber)
{
	auto& item = g_Level.Items[itemNumber];

	if (!TriggerActive(&item))
		return;

	int meshCount = Objects[item.ObjectNumber].nmeshes - 1;

	if (!(GlobalCounter & 3))
	{
		auto spheres = item.GetSpheres();
		int prevMeshIndex = item.ItemFlags[FireRopeItemFlags::LowerMesh];

		for (int i = item.ItemFlags[FireRopeItemFlags::LowerMesh]; i < item.ItemFlags[FireRopeItemFlags::UpperMesh]; i++)
		{
			bool oddMesh = (i & 1);

			if (item.MeshBits.Test(i))
			{
				if (oddMesh && prevMeshIndex < spheres.size() && GlobalCounter & 4)
				{
					auto pos = Vector3((spheres[prevMeshIndex].Center + spheres[i].Center) / 2);
					TriggerRopeFlame(pos);
				}
				else if (!(GlobalCounter & 4))
				{
					TriggerRopeFlame(Vector3i(spheres[i].Center));
				}
			}

			if (oddMesh)
				prevMeshIndex++;
		}

		if (item.ItemFlags[FireRopeItemFlags::Timeout])
		{
			if (item.ItemFlags[FireRopeItemFlags::LowerMesh] > 0)
				item.ItemFlags[FireRopeItemFlags::LowerMesh]--;

			if (item.ItemFlags[FireRopeItemFlags::UpperMesh] < meshCount)
				item.ItemFlags[FireRopeItemFlags::UpperMesh]++;
		}
	}

	if (item.ItemFlags[FireRopeItemFlags::Timeout])
	{
		item.ItemFlags[FireRopeItemFlags::Timeout]--;

		if (!item.ItemFlags[FireRopeItemFlags::Timeout])
		{
			item.ItemFlags[FireRopeItemFlags::UpperMesh] =
			item.ItemFlags[FireRopeItemFlags::LowerMesh] = item.ItemFlags[FireRopeItemFlags::StartMesh];

			ExplodeItemNode(&item, item.ItemFlags[FireRopeItemFlags::StartMesh], 0, BODY_DO_EXPLOSION);
		}
	}
	else if (GlobalCounter & 1)