Clean up "Sticks to Snakes", too.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@5587 c06c8d41-db1a-0410-9941-cceddc491573

1 files changed, 120 insertions, 0 deletions

diff --git a/crawl-ref/source/spells2.cc b/crawl-ref/source/spells2.cc
index 5de9a1070b..79f433a300 100644
--- a/crawl-ref/source/spells2.cc
+++ b/crawl-ref/source/spells2.cc
@@ -35,6 +35,7 @@
 #include "directn.h"
 #include "dungeon.h"
 #include "effects.h"
+#include "invent.h"
 #include "itemname.h"
 #include "itemprop.h"
 #include "items.h"
@@ -1541,6 +1542,125 @@ bool cast_summon_small_mammals(int pow, bool god_gift)
     return (success);
 }
 
+bool cast_sticks_to_snakes(int pow, bool god_gift)
+{
+    monster_type mon = MONS_PROGRAM_BUG;
+    int count = 0;
+    int max = 1 + random2(1 + you.skills[SK_TRANSMIGRATION]) / 4;
+    int dur = std::min(3 + random2(pow) / 20, 5);
+    const int weapon = you.equip[EQ_WEAPON];
+
+    if (weapon == -1)
+    {
+        msg::stream << "Your " << your_hand(true) << " feel slithery!"
+                    << std::endl;
+        return (false);
+    }
+
+    // Don't enchant sticks marked with {!D}.
+    if (!check_warning_inscriptions(you.inv[ weapon ], OPER_DESTROY))
+    {
+        mprf("%s feel%s slithery for a moment!",
+             you.inv[weapon].name(DESC_CAP_YOUR).c_str(),
+             you.inv[weapon].quantity > 1 ? "s" : "");
+        return (false);
+    }
+
+    const beh_type beha = item_cursed(you.inv[ weapon ]) ? BEH_HOSTILE
+                                                         : BEH_FRIENDLY;
+    const unsigned short hitting = (beha == BEH_HOSTILE) ? MHITYOU
+                                                         : you.pet_target;
+
+    if ((you.inv[weapon].base_type == OBJ_MISSILES
+         && (you.inv[weapon].sub_type == MI_ARROW)))
+    {
+        if (you.inv[weapon].quantity < max)
+            max = you.inv[weapon].quantity;
+
+        for (int i = 0; i <= max; i++)
+        {
+            if (one_chance_in(5 - std::min(4, div_rand_round(pow * 2, 25)))
+                || get_ammo_brand(you.inv[weapon]) == SPMSL_POISONED)
+            {
+                mon = random2(100) < pow / 3 ? MONS_BROWN_SNAKE : MONS_SNAKE;
+            }
+            else
+            {
+                mon = MONS_SMALL_SNAKE;
+            }
+
+            if (create_monster(
+                    mgen_data(mon, beha, dur,
+                              you.pos(), hitting,
+                              god_gift ? MF_GOD_GIFT : 0)) != -1)
+            {
+                count++;
+            }
+        }
+    }
+
+    if (you.inv[ weapon ].base_type == OBJ_WEAPONS
+        && (you.inv[ weapon ].sub_type == WPN_CLUB
+            || you.inv[ weapon ].sub_type == WPN_SPEAR
+            || you.inv[ weapon ].sub_type == WPN_QUARTERSTAFF
+            || you.inv[ weapon ].sub_type == WPN_SCYTHE
+            || you.inv[ weapon ].sub_type == WPN_GIANT_CLUB
+            || you.inv[ weapon ].sub_type == WPN_GIANT_SPIKED_CLUB
+            || you.inv[ weapon ].sub_type == WPN_BOW
+            || you.inv[ weapon ].sub_type == WPN_LONGBOW
+            || you.inv[ weapon ].sub_type == WPN_ANKUS
+            || you.inv[ weapon ].sub_type == WPN_HALBERD
+            || you.inv[ weapon ].sub_type == WPN_GLAIVE
+            || you.inv[ weapon ].sub_type == WPN_BLOWGUN))
+    {
+        // Upsizing Snakes to Brown Snakes as the base class for using
+        // the really big sticks (so bonus applies really only to trolls,
+        // ogres, and most importantly ogre magi).  Still it's unlikely
+        // any character is strong enough to bother lugging a few of
+        // these around.  -- bwr
+        if (item_mass(you.inv[weapon]) < 300)
+            mon = MONS_SNAKE;
+        else
+            mon = MONS_BROWN_SNAKE;
+
+        if (pow > 20 && one_chance_in(3))
+            mon = MONS_BROWN_SNAKE;
+
+        if (pow > 40 && one_chance_in(3))
+            mon = MONS_YELLOW_SNAKE;
+
+        if (pow > 70 && one_chance_in(3))
+            mon = MONS_BLACK_SNAKE;
+
+        if (pow > 90 && one_chance_in(3))
+            mon = MONS_GREY_SNAKE;
+
+        if (create_monster(
+                mgen_data(mon, beha, dur,
+                          you.pos(), hitting,
+                          god_gift ? MF_GOD_GIFT : 0)) != -1)
+        {
+            count++;
+        }
+    }
+
+    if (count > you.inv[you.equip[EQ_WEAPON]].quantity)
+        count = you.inv[you.equip[EQ_WEAPON]].quantity;
+
+    if (count > 0)
+    {
+        dec_inv_item_quantity(you.equip[EQ_WEAPON], count);
+
+        mprf("You create %s snake%s!",
+             count > 1 ? "some" : "a", count > 1 ? "s" : "");
+        return (true);
+    }
+
+    msg::stream << "Your " << your_hand(true) << " feel slithery!"
+                << std::endl;
+    return (false);
+}
+
 bool cast_summon_scorpions(int pow, bool god_gift)
 {
     bool success = false;