Revert "Remove silver statues."

Don't worry; the whole point of this set of commits is to fix the problems
with them and their companion statues.

This partially reverts commit b4c3b502143418fb4fdb3faaa29a2ef6e9eabce5.
This reverts commit e1156a91a6a0b1bb26c7e7ee63710c3eefbd2739.

1 files changed, 38 insertions, 0 deletions

diff --git a/crawl-ref/source/mon-abil.cc b/crawl-ref/source/mon-abil.cc
index d937e4b0cb..7ee9db409e 100644
--- a/crawl-ref/source/mon-abil.cc
+++ b/crawl-ref/source/mon-abil.cc
@@ -1086,6 +1086,37 @@ static bool _siren_movement_effect(const monster* mons)
     return do_resist;
 }
 
+static bool _silver_statue_effects(monster* mons)
+{
+    actor *foe = mons->get_foe();
+
+    int abjuration_duration = 5;
+
+    // Tone down friendly silver statues for Zotdef.
+    if (mons->attitude == ATT_FRIENDLY && !(foe && foe->is_player())
+        && crawl_state.game_is_zotdef())
+    {
+        if (!one_chance_in(3))
+            return false;
+        abjuration_duration = 1;
+    }
+
+    if (foe && mons->can_see(foe) && !one_chance_in(3))
+    {
+        const string msg = "'s eyes glow " + weird_glowing_colour() + '.';
+        simple_monster_message(mons, msg.c_str(), MSGCH_WARN);
+
+        create_monster(
+            mgen_data(
+                summon_any_demon((coinflip() ? RANDOM_DEMON_COMMON
+                                             : RANDOM_DEMON_LESSER)),
+                SAME_ATTITUDE(mons), mons, abjuration_duration, 0,
+                foe->pos(), mons->foe));
+        return true;
+    }
+    return false;
+}
+
 static bool _orange_statue_effects(monster* mons)
 {
     actor *foe = mons->get_foe();
@@ -3481,6 +3512,13 @@ bool mon_special_ability(monster* mons, bolt & beem)
         used = _orange_statue_effects(mons);
         break;
 
+    case MONS_SILVER_STATUE:
+        if (player_or_mon_in_sanct(mons))
+            break;
+
+        used = _silver_statue_effects(mons);
+        break;
+
     case MONS_BALL_LIGHTNING:
         if (is_sanctuary(mons->pos()))
             break;