Function ShockwaveRingControl

TombEngine/Objects/Effects/Boss.cpp:108–132

NOTE: Ring and explosion wave rotate and scale by default.

	// NOTE: Ring and explosion wave rotate and scale by default.
	void ShockwaveRingControl(int itemNumber)
	{
		auto& item = g_Level.Items[itemNumber];

		// Entity life.
		if (item.ItemFlags[0] > 0)
			item.ItemFlags[0]--;

		if (item.ItemFlags[0] <= 0)
		{
			auto colorEnd = Vector4(item.Model.Color.x - 0.1f, item.Model.Color.y - 0.1f, item.Model.Color.z - 0.1f, item.Model.Color.w);
			item.Model.Color = Vector4::Lerp(item.Model.Color, colorEnd, 0.35f);

			if (item.Model.Color.x <= 0.0f &&
				item.Model.Color.y <= 0.0f &&
				item.Model.Color.z <= 0.0f)
			{
				RemoveActiveItem(itemNumber);
				KillItem(itemNumber);
			}
		}

		item.Model.Mutators[0].Scale += Vector3::One;
		UpdateItemRoom(itemNumber);
	}

	void ShockwaveExplosionControl(int itemNumber)
	{