From 5c7064085c546eeeaecb43267806c0058345f865 Mon Sep 17 00:00:00 2001
From: haranp <haranp@c06c8d41-db1a-0410-9941-cceddc491573>
Date: Mon, 4 Aug 2008 16:42:54 +0000
Subject: Fix 2037105: amulet of controlled flight not autoIDing.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@6773 c06c8d41-db1a-0410-9941-cceddc491573
---
 crawl-ref/source/it_use2.cc | 13 +++++++++++++
 crawl-ref/source/player.cc  | 46 ++++++++++++++++++++++-----------------------
 crawl-ref/source/player.h   |  2 ++
 3 files changed, 38 insertions(+), 23 deletions(-)

diff --git a/crawl-ref/source/it_use2.cc b/crawl-ref/source/it_use2.cc
index 542e9adbf1..d0d2a67ef9 100644
--- a/crawl-ref/source/it_use2.cc
+++ b/crawl-ref/source/it_use2.cc
@@ -188,6 +188,19 @@ bool potion_effect( potion_type pot_eff, int pow, bool was_known )
         if (!player_is_airborne())
             mpr("You gently float upwards from the floor.");
 
+        // Amulets can auto-ID.
+        // FIXME: should also happen when putting on/removing amulet
+        // while levitating.
+        if (!you.duration[DUR_LEVITATION]
+            && wearing_amulet(AMU_CONTROLLED_FLIGHT)
+            && !extrinsic_amulet_effect(AMU_CONTROLLED_FLIGHT))
+        {
+            item_def& amu(you.inv[you.equip[EQ_AMULET]]);
+            set_ident_type(amu.base_type, amu.sub_type, ID_KNOWN_TYPE);
+            set_ident_flags(amu, ISFLAG_KNOW_PROPERTIES);
+            mprf("You are wearing: %s", amu.name(DESC_INVENTORY_EQUIP).c_str());
+        }
+
         you.duration[DUR_LEVITATION] += 25 + random2(pow);
 
         if (you.duration[DUR_LEVITATION] > 100)
diff --git a/crawl-ref/source/player.cc b/crawl-ref/source/player.cc
index f2d4c89162..b3187aa42a 100644
--- a/crawl-ref/source/player.cc
+++ b/crawl-ref/source/player.cc
@@ -4212,37 +4212,37 @@ int player_mental_clarity(bool calc_unid, bool items)
     return ((ret > 3) ? 3 : ret);
 }
 
-bool wearing_amulet(jewellery_type amulet, bool calc_unid)
+// Returns whether the player has the effect of the amulet
+// from a non-amulet source.
+bool extrinsic_amulet_effect(jewellery_type amulet)
 {
-    if (amulet == AMU_CONTROLLED_FLIGHT
-        && (you.duration[DUR_CONTROLLED_FLIGHT]
-            || player_genus(GENPC_DRACONIAN)
-            || you.attribute[ATTR_TRANSFORMATION] == TRAN_DRAGON
-            || you.attribute[ATTR_TRANSFORMATION] == TRAN_BAT))
+    switch ( amulet )
     {
-        return (true);
+    case AMU_CONTROLLED_FLIGHT:
+        return (you.duration[DUR_CONTROLLED_FLIGHT]
+                || player_genus(GENPC_DRACONIAN)
+                || you.attribute[ATTR_TRANSFORMATION] == TRAN_DRAGON
+                || you.attribute[ATTR_TRANSFORMATION] == TRAN_BAT);
+    case AMU_CLARITY:
+        return (player_mutation_level(MUT_CLARITY) > 0);
+    case AMU_RESIST_CORROSION:
+    case AMU_CONSERVATION:
+        return (player_equip_ego_type(EQ_CLOAK, SPARM_PRESERVATION) > 0);
+    default:
+        return false;
     }
+}
 
-    if (amulet == AMU_CLARITY && player_mutation_level(MUT_CLARITY))
+bool wearing_amulet(jewellery_type amulet, bool calc_unid)
+{
+    if ( extrinsic_amulet_effect(amulet) )
         return (true);
-
-    if (amulet == AMU_RESIST_CORROSION || amulet == AMU_CONSERVATION)
-    {
-        // XXX: this is hackish {dlb}
-        if (player_equip_ego_type( EQ_CLOAK, SPARM_PRESERVATION ))
-            return (true);
-    }
-
+    
     if (you.equip[EQ_AMULET] == -1)
         return (false);
 
-    if (you.inv[you.equip[EQ_AMULET]].sub_type == amulet
-        && ( calc_unid || item_type_known(you.inv[you.equip[EQ_AMULET]]) ))
-    {
-        return (true);
-    }
-
-    return (false);
+    const item_def& amu(you.inv[you.equip[EQ_AMULET]]);
+    return (amu.sub_type == amulet && (calc_unid || item_type_known(amu)));
 }
 
 bool player_is_airborne(void)
diff --git a/crawl-ref/source/player.h b/crawl-ref/source/player.h
index 7103018c47..6cef3c124f 100644
--- a/crawl-ref/source/player.h
+++ b/crawl-ref/source/player.h
@@ -75,6 +75,8 @@ int player_wielded_item();
  * called from: ability - acr - fight - food - it_use2 - item_use - items -
  *              misc - mutation - ouch
  * *********************************************************************** */
+
+bool extrinsic_amulet_effect(jewellery_type amulet);
 bool wearing_amulet(jewellery_type which_am, bool calc_unid = true);
 
 
-- 
cgit v1.2.3-54-g00ecf