handle destory or derank for buildings

src/engine/gameManager/CombatManager.java

@@ -165,7 +165,7 @@ public enum CombatManager {
                 break;
             case Building:
                 if(attackRange > 15){
-                    float rangeSquared = attackRange * attackRange;
+                    float rangeSquared = (attackRange + target.getBounds().getHalfExtents().x) * (attackRange + target.getBounds().getHalfExtents().x);
                     //float distanceSquared = attacker.loc.distanceSquared(target.loc);
                     if(distanceSquared < rangeSquared) {
                         inRange = true;
@@ -420,7 +420,7 @@ public enum CombatManager {
                 if (AbstractCharacter.IsAbstractCharacter(target))
                     ((AbstractCharacter) target).modifyHealth(-damage, attacker, true);
                 else
-                    ((Building) target).setCurrentHitPoints(target.getCurrentHitpoints() - damage);
+                    ((Building) target).modifyHealth(-damage, attacker);
 
                 int attackAnim = getSwingAnimation(null, null, slot.equals(mbEnums.EquipSlotType.RHELD));
                 if (attacker.charItemManager.getEquipped().get(slot) != null) {