Try to avoid repeats when acquiring already seen weapons/armour.

Weapons: both type and brand is handled, separately.  This means,
    once you've seen any lajatang, there is no more any bonus to
    get them -- you'll get 5 times as many quarterstaves, brand
    repeat protection comes only within the type.

Armour: currently only brand is handled, type will have to be merged
    with the old code which suffered from no information about stash.

1 files changed, 21 insertions, 0 deletions

diff --git a/crawl-ref/source/makeitem.cc b/crawl-ref/source/makeitem.cc
index bfa26805b1..2312bc5712 100644
--- a/crawl-ref/source/makeitem.cc
+++ b/crawl-ref/source/makeitem.cc
@@ -3293,6 +3293,27 @@ int items(int allow_uniques,       // not just true-false,
     return (p);
 }
 
+void reroll_brand(item_def &item, int item_level)
+{
+    ASSERT(!is_artefact(item));
+    switch(item.base_type)
+    {
+    case OBJ_WEAPONS:
+        item.special = _determine_weapon_brand(item, item_level);
+        break;
+    case OBJ_MISSILES:
+        item.special = _determine_missile_brand(item, item_level);
+        break;
+    case OBJ_ARMOUR:
+        // Robe of the Archmagi has an ugly hack of unknown purpose,
+        // as one of side effects it won't ever generate here.
+        item.special = _determine_armour_ego(item, OBJ_ARMOUR, item_level);
+        break;
+    default:
+        ASSERT(!"can't reroll brands of this type");
+    }
+}
+
 static int _roll_rod_enchant(int item_level)
 {
     int value = 0;