class LaserEyes 
{
	[SerializedField] private TetrisGrid _tetrisGrid;
	private ParticalSystem _particalSystem;
	
	onEnebled 
	{
		_tetrisGrid.LeninEyesSwitched += OnLeninEyesSwitched;
	}

	onDisabled 
	{
		_tetrisGrid.LeninEyesSwitched -= OnLeninEyesSwitched ;
	}

	Start
	{
		_particalSystem = GetComponent<ParticalSystem>();
	}

	OnLeninSwitched (bool switched)
	{
		if(switched)
			_particalSystem.Play();
		else
			_particalSystem.Stop();
	}
}

class TetrisGrid 
{	
	private ControllableFigure _controllableFigure;

	onEnebled 
	{
		_controllableFigure.LeftBorderCrossed += OnLeftBorderCrossed;
	}

	onDisabled 
	{
		_controllableFigure.LeftBorderCrossed -= OnLeftBorderCrossed;
	}

	...
	StartFigure
	{
		var figure = ... 
		...
		_controllableFigure = figure;	
	}

	...
	OnleftBorderCrossed(bool crossed)
	{
		Invoke?.LeninEyesSwitched(crossed)
	}
}

class ContorollableFigure 
{
	...
	{
		Invoke?.LeftBorderCrossed(bool);
	}
	...
}