private void OnUpgrade()
{
var gradeAttributes = upgradable.GetCurGradeAttributes();
var prevGrade = upgradable.GetPreviousGradeAttributes();
shadowSprite.SetActive(true);
fixable.SetUp(gradeAttributes.healthPoints, prevGrade.requiredWoods, prevGrade.requiredRocks);
wallCollider.enabled = true;
sr.sprite = upgradable.CompleteSprite;
}
