Clean up dancing_weapon().

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@5594 c06c8d41-db1a-0410-9941-cceddc491573

1 files changed, 85 insertions, 0 deletions

diff --git a/crawl-ref/source/spells2.cc b/crawl-ref/source/spells2.cc
index b3809f28e0..e50002258d 100644
--- a/crawl-ref/source/spells2.cc
+++ b/crawl-ref/source/spells2.cc
@@ -39,6 +39,7 @@
 #include "itemname.h"
 #include "itemprop.h"
 #include "items.h"
+#include "it_use2.h"
 #include "message.h"
 #include "misc.h"
 #include "monplace.h"
@@ -2340,6 +2341,90 @@ bool cast_conjure_ball_lightning(int pow, bool god_gift)
     return (success);
 }
 
+bool dancing_weapon(int pow, bool god_gift, bool force_hostile,
+                    bool quiet_failure)
+{
+    bool success = true;
+
+    const int dur = std::min(2 + (random2(pow) / 5), 6);
+
+    const int wpn = you.equip[EQ_WEAPON];
+
+    // See if wielded item is appropriate.
+    if (wpn == -1
+        || you.inv[wpn].base_type != OBJ_WEAPONS
+        || is_range_weapon(you.inv[wpn])
+        || is_fixed_artefact(you.inv[wpn]))
+    {
+        success = false;
+    }
+
+    // See if we can get an mitm for the dancing weapon.
+    const int i = get_item_slot();
+
+    if (i == NON_ITEM)
+        success = false;
+
+    int monster;
+
+    if (success)
+    {
+        // Cursed weapons become hostile.
+        const bool friendly = (!force_hostile && !item_cursed(you.inv[wpn]));
+
+        monster =
+            create_monster(
+                mgen_data(MONS_DANCING_WEAPON,
+                          friendly ? BEH_FRIENDLY : BEH_HOSTILE,
+                          dur, you.pos(),
+                          friendly ? you.pet_target : MHITYOU,
+                          god_gift ? MF_GOD_GIFT : 0));
+
+        if (monster == -1)
+            success = false;
+    }
+
+    if (!success)
+    {
+        destroy_item(i);
+
+        if (!quiet_failure)
+        {
+            if (wpn != -1)
+                mpr("Your weapon vibrates crazily for a second.");
+            else
+                msg::stream << "Your " << your_hand(true) << " twitch."
+                            << std::endl;
+        }
+
+        return (false);
+    }
+
+    // We are successful.  Unwield the weapon, removing any wield effects.
+    unwield_item();
+
+    // Copy the unwielded item.
+    mitm[i] = you.inv[wpn];
+    mitm[i].quantity = 1;
+    mitm[i].x = 0;
+    mitm[i].y = 0;
+    mitm[i].link = NON_ITEM;
+
+    // Mark the weapon as thrown, so that we'll autograb it when the
+    // tango's done.
+    mitm[i].flags |= ISFLAG_THROWN;
+
+    mprf("%s dances into the air!", you.inv[wpn].name(DESC_CAP_YOUR).c_str());
+
+    you.inv[wpn].quantity = 0;
+
+    menv[monster].inv[MSLOT_WEAPON] = i;
+    menv[monster].colour = mitm[i].colour;
+    burden_change();
+
+    return (true);
+}
+
 // Makhleb or Kikubaaqudgha sends a demonic buddy (or enemy) for a
 // follower.
 bool summon_demon_type(monster_type mon, int pow, bool god_gift)