private void Start()
{
Damagable damagable = GetComponent <Damagable>();
BlockLevel level = FindObjectOfType <BlockLevel>();
Audible audible = GetComponent <Audible>();
damagable.RegisterOnKilled((d) => audible.playSound());
damagable.RegisterOnKilled((d) => level.removeBlock(d));
Animatable animatable = GetComponent <Animatable>();
damagable.RegisterOnDamaged((healthRemaining) => animatable.changeSprite(healthRemaining));
}