public async Task <AttackResult> Attack(IEntity target, IEntity injurant, HitMethod hitMethod)
{
// TODO check distance
var attackResult = await _hitStrategy.HitCalculateAsync(
GrainFactory.GetEntity(this).AsImmutable(),
target.AsImmutable(),
injurant.AsImmutable(),
hitMethod);
return(attackResult.IsEmpty ? AttackResult.Miss() : AttackResult.Hit(attackResult));
}