void Explode()
{
int layerMask = LayerMask.GetMask("block");
Collider2D[] colliders = Physics2D.OverlapCircleAll(transform.position, explodeRadius, layerMask);
foreach (Collider2D col in colliders)
{
blocks block = col.GetComponent <blocks>();
if (block == null)
{
Destroy(gameObject);
}
else
{
block.DestroyBlock();
}
}
}
