Introduce GetItemBLevel

Source/items.cpp

@@ -1484,6 +1484,20 @@ void ItemRndDur(Item &item)
 		item._iDurability = GenerateRnd(item._iMaxDur / 2) + (item._iMaxDur / 4) + 1;
 }
 
+int GetItemBLevel(int lvl, item_misc_id miscId, bool onlygood, bool uper15)
+{
+	int iblvl = -1;
+	if (GenerateRnd(100) <= 10
+	    || GenerateRnd(100) <= lvl
+	    || onlygood
+	    || IsAnyOf(miscId, IMISC_STAFF, IMISC_RING, IMISC_AMULET)) {
+		iblvl = lvl;
+	}
+	if (uper15)
+		iblvl = lvl + 4;
+	return iblvl;
+}
+
 void SetupAllItems(const Player &player, Item &item, _item_indexes idx, int iseed, int lvl, int uper, bool onlygood, bool recreate, bool pregen)
 {
 	item._iSeed = iseed;
@@ -1502,23 +1516,7 @@ void SetupAllItems(const Player &player, Item &item, _item_indexes idx, int isee
 		item._iCreateInfo |= CF_UPER1;
 
 	if (item._iMiscId != IMISC_UNIQUE) {
-		int iblvl = -1;
-		if (GenerateRnd(100) <= 10 || GenerateRnd(100) <= lvl) {
-			iblvl = lvl;
-		}
-		if (iblvl == -1 && item._iMiscId == IMISC_STAFF) {
-			iblvl = lvl;
-		}
-		if (iblvl == -1 && item._iMiscId == IMISC_RING) {
-			iblvl = lvl;
-		}
-		if (iblvl == -1 && item._iMiscId == IMISC_AMULET) {
-			iblvl = lvl;
-		}
-		if (onlygood)
-			iblvl = lvl;
-		if (uper == 15)
-			iblvl = lvl + 4;
+		int iblvl = GetItemBLevel(lvl, item._iMiscId, onlygood, uper == 15);
 		if (iblvl != -1) {
 			_unique_items uid = CheckUnique(item, iblvl, uper, recreate);
 			if (uid == UITEM_INVALID) {