/* File: object2.c */

/* Purpose: Object code, part 2 */

/*
 * Copyright (c) 1989 James E. Wilson, Robert A. Koeneke
 *
 * This software may be copied and distributed for educational, research, and
 * not for profit purposes provided that this copyright and statement are
 * included in all such copies.
 */

#include "angband.h"



/*
 * Excise a dungeon object from any stacks
 */
void excise_object_idx(int o_idx)
{
	object_type *j_ptr;

	s16b this_o_idx, next_o_idx;

	s16b prev_o_idx = 0;


	/* Object */
	j_ptr = &o_list[o_idx];

	/* Monster */
	if (j_ptr->held_m_idx)
	{
		monster_type *m_ptr;

		/* Monster */
		m_ptr = &m_list[j_ptr->held_m_idx];

		/* Scan all objects in the grid */
		for (this_o_idx = m_ptr->hold_o_idx; this_o_idx; this_o_idx = next_o_idx)
		{
			object_type *o_ptr;

			/* Acquire object */
			o_ptr = &o_list[this_o_idx];

			/* Acquire next object */
			next_o_idx = o_ptr->next_o_idx;

			/* Done */
			if (this_o_idx == o_idx)
			{
				/* No previous */
				if (prev_o_idx == 0)
				{
					/* Remove from list */
					m_ptr->hold_o_idx = next_o_idx;
				}

				/* Real previous */
				else
				{
					object_type *k_ptr;

					/* Previous object */
					k_ptr = &o_list[prev_o_idx];

					/* Remove from list */
					k_ptr->next_o_idx = next_o_idx;
				}

				/* Forget next pointer */
				o_ptr->next_o_idx = 0;

				/* Done */
				break;
			}

			/* Save prev_o_idx */
			prev_o_idx = this_o_idx;
		}
	}

	/* Dungeon */
	else
	{
		cave_type *c_ptr;

		int y = j_ptr->iy;
		int x = j_ptr->ix;

		/* Grid */
		c_ptr = &cave[y][x];

		/* Scan all objects in the grid */
		for (this_o_idx = c_ptr->o_idx; this_o_idx; this_o_idx = next_o_idx)
		{
			object_type *o_ptr;

			/* Acquire object */
			o_ptr = &o_list[this_o_idx];

			/* Acquire next object */
			next_o_idx = o_ptr->next_o_idx;

			/* Done */
			if (this_o_idx == o_idx)
			{
				/* No previous */
				if (prev_o_idx == 0)
				{
					/* Remove from list */
					c_ptr->o_idx = next_o_idx;
				}

				/* Real previous */
				else
				{
					object_type *k_ptr;

					/* Previous object */
					k_ptr = &o_list[prev_o_idx];

					/* Remove from list */
					k_ptr->next_o_idx = next_o_idx;
				}

				/* Forget next pointer */
				o_ptr->next_o_idx = 0;

				/* Done */
				break;
			}

			/* Save prev_o_idx */
			prev_o_idx = this_o_idx;
		}
	}
}


/*
 * Delete a dungeon object
 *
 * Handle "stacks" of objects correctly.
 */
void delete_object_idx(int o_idx)
{
	object_type *j_ptr;

	/* Excise */
	excise_object_idx(o_idx);

	/* Object */
	j_ptr = &o_list[o_idx];

	/* Dungeon floor */
	if (!(j_ptr->held_m_idx))
	{
		int y, x;

		/* Location */
		y = j_ptr->iy;
		x = j_ptr->ix;

		/* Visual update */
		lite_spot(y, x);
	}

	/* Wipe the object */
	object_wipe(j_ptr);

	/* Count objects */
	o_cnt--;
}


/*
 * Deletes all objects at given location
 */
void delete_object(int y, int x)
{
	cave_type *c_ptr;

	s16b this_o_idx, next_o_idx;


	/* Refuse "illegal" locations */
	if (!in_bounds(y, x)) return;


	/* Grid */
	c_ptr = &cave[y][x];

	/* Scan all objects in the grid */
	for (this_o_idx = c_ptr->o_idx; this_o_idx; this_o_idx = next_o_idx)
	{
		object_type *o_ptr;

		/* Acquire object */
		o_ptr = &o_list[this_o_idx];

		/* Acquire next object */
		next_o_idx = o_ptr->next_o_idx;

		/* Wipe the object */
		object_wipe(o_ptr);

		/* Count objects */
		o_cnt--;
	}

	/* Objects are gone */
	c_ptr->o_idx = 0;

	/* Visual update */
	lite_spot(y, x);
}


/*
 * Move an object from index i1 to index i2 in the object list
 */
static void compact_objects_aux(int i1, int i2)
{
	int i;

	cave_type *c_ptr;

	object_type *o_ptr;


	/* Do nothing */
	if (i1 == i2) return;


	/* Repair objects */
	for (i = 1; i < o_max; i++)
	{
		/* Acquire object */
		o_ptr = &o_list[i];

		/* Skip "dead" objects */
		if (!o_ptr->k_idx) continue;

		/* Repair "next" pointers */
		if (o_ptr->next_o_idx == i1)
		{
			/* Repair */
			o_ptr->next_o_idx = i2;
		}
	}


	/* Acquire object */
	o_ptr = &o_list[i1];


	/* Monster */
	if (o_ptr->held_m_idx)
	{
		monster_type *m_ptr;

		/* Acquire monster */
		m_ptr = &m_list[o_ptr->held_m_idx];

		/* Repair monster */
		if (m_ptr->hold_o_idx == i1)
		{
			/* Repair */
			m_ptr->hold_o_idx = i2;
		}
	}

	/* Dungeon */
	else
	{
		int y, x;

		/* Acquire location */
		y = o_ptr->iy;
		x = o_ptr->ix;

		/* Acquire grid */
		c_ptr = &cave[y][x];

		/* Repair grid */
		if (c_ptr->o_idx == i1)
		{
			/* Repair */
			c_ptr->o_idx = i2;
		}
	}


	/* Structure copy */
	o_list[i2] = o_list[i1];

	/* Wipe the hole */
	object_wipe(o_ptr);
}


/*
 * Compact and Reorder the object list
 *
 * This function can be very dangerous, use with caution!
 *
 * When actually "compacting" objects, we base the saving throw on a
 * combination of object level, distance from player, and current
 * "desperation".
 *
 * After "compacting" (if needed), we "reorder" the objects into a more
 * compact order, and we reset the allocation info, and the "live" array.
 */
void compact_objects(int size)
{
	int i, y, x, num, cnt;

	int cur_lev, cur_dis, chance;


	/* Compact */
	if (size)
	{
		/* Message */
#ifdef JP
msg_print("アイテム情報を圧縮しています...");
#else
		msg_print("Compacting objects...");
#endif


		/* Redraw map */
		p_ptr->redraw |= (PR_MAP);

		/* Window stuff */
		p_ptr->window |= (PW_OVERHEAD | PW_DUNGEON);
	}


	/* Compact at least 'size' objects */
	for (num = 0, cnt = 1; num < size; cnt++)
	{
		/* Get more vicious each iteration */
		cur_lev = 5 * cnt;

		/* Get closer each iteration */
		cur_dis = 5 * (20 - cnt);

		/* Examine the objects */
		for (i = 1; i < o_max; i++)
		{
			object_type *o_ptr = &o_list[i];

			byte obj_level = get_object_level(o_ptr);

			/* Skip dead objects */
			if (!o_ptr->k_idx) continue;

			/* Hack -- High level objects start out "immune" */
			if (obj_level > cur_lev) continue;

			/* Monster */
			if (o_ptr->held_m_idx)
			{
				monster_type *m_ptr;

				/* Acquire monster */
				m_ptr = &m_list[o_ptr->held_m_idx];

				/* Get the location */
				y = m_ptr->fy;
				x = m_ptr->fx;

				/* Monsters protect their objects */
				if (randint0(100) < 90) continue;
			}

			/* Dungeon */
			else
			{
				/* Get the location */
				y = o_ptr->iy;
				x = o_ptr->ix;
			}

			/* Nearby objects start out "immune" */
			if ((cur_dis > 0) && (distance(py, px, y, x) < cur_dis)) continue;

			/* Saving throw */
			chance = 90;

			/* Hack -- only compact artifacts in emergencies */
			if ((artifact_p(o_ptr) || o_ptr->art_name) &&
			    (cnt < 1000)) chance = 100;

			/* Apply the saving throw */
			if (randint0(100) < chance) continue;

			/* Delete the object */
			delete_object_idx(i);

			/* Count it */
			num++;
		}
	}


	/* Excise dead objects (backwards!) */
	for (i = o_max - 1; i >= 1; i--)
	{
		object_type *o_ptr = &o_list[i];

		/* Skip real objects */
		if (o_ptr->k_idx) continue;

		/* Move last object into open hole */
		compact_objects_aux(o_max - 1, i);

		/* Compress "o_max" */
		o_max--;
	}
}


/*
 * Delete all the items when player leaves the level
 *
 * Note -- we do NOT visually reflect these (irrelevant) changes
 *
 * Hack -- we clear the "c_ptr->o_idx" field for every grid,
 * and the "m_ptr->next_o_idx" field for every monster, since
 * we know we are clearing every object.  Technically, we only
 * clear those fields for grids/monsters containing objects,
 * and we clear it once for every such object.
 */
void wipe_o_list(void)
{
	int i;

	/* Delete the existing objects */
	for (i = 1; i < o_max; i++)
	{
		object_type *o_ptr = &o_list[i];

		/* Skip dead objects */
		if (!o_ptr->k_idx) continue;

		/* Mega-Hack -- preserve artifacts */
		if (!character_dungeon || preserve_mode)
		{
			/* Hack -- Preserve unknown artifacts */
			if (artifact_p(o_ptr) && !object_known_p(o_ptr))
			{
				/* Mega-Hack -- Preserve the artifact */
				a_info[o_ptr->name1].cur_num = 0;
			}
		}

		/* Monster */
		if (o_ptr->held_m_idx)
		{
			monster_type *m_ptr;

			/* Monster */
			m_ptr = &m_list[o_ptr->held_m_idx];

			/* Hack -- see above */
			m_ptr->hold_o_idx = 0;
		}

		/* Dungeon */
		else
		{
			cave_type *c_ptr;

			/* Access location */
			int y = o_ptr->iy;
			int x = o_ptr->ix;

			/* Access grid */
			c_ptr = &cave[y][x];

			/* Hack -- see above */
			c_ptr->o_idx = 0;
		}

		/* Wipe the object */
		object_wipe(o_ptr);
	}

	/* Reset "o_max" */
	o_max = 1;

	/* Reset "o_cnt" */
	o_cnt = 0;
}


/*
 * Acquires and returns the index of a "free" object.
 *
 * This routine should almost never fail, but in case it does,
 * we must be sure to handle "failure" of this routine.
 */
s16b o_pop(void)
{
	int i;


	/* Initial allocation */
	if (o_max < max_o_idx)
	{
		/* Get next space */
		i = o_max;

		/* Expand object array */
		o_max++;

		/* Count objects */
		o_cnt++;

		/* Use this object */
		return (i);
	}


	/* Recycle dead objects */
	for (i = 1; i < o_max; i++)
	{
		object_type *o_ptr;

		/* Acquire object */
		o_ptr = &o_list[i];

		/* Skip live objects */
		if (o_ptr->k_idx) continue;

		/* Count objects */
		o_cnt++;

		/* Use this object */
		return (i);
	}


	/* Warn the player (except during dungeon creation) */
#ifdef JP
if (character_dungeon) msg_print("アイテムが多すぎる！");
#else
	if (character_dungeon) msg_print("Too many objects!");
#endif


	/* Oops */
	return (0);
}


/*
 * Apply a "object restriction function" to the "object allocation table"
 */
errr get_obj_num_prep(void)
{
	int i;

	/* Get the entry */
	alloc_entry *table = alloc_kind_table;

	/* Scan the allocation table */
	for (i = 0; i < alloc_kind_size; i++)
	{
		/* Accept objects which pass the restriction, if any */
		if (!get_obj_num_hook || (*get_obj_num_hook)(table[i].index))
		{
			/* Accept this object */
			table[i].prob2 = table[i].prob1;
		}

		/* Do not use this object */
		else
		{
			/* Decline this object */
			table[i].prob2 = 0;
		}
	}

	/* Success */
	return (0);
}


/*
 * Choose an object kind that seems "appropriate" to the given level
 *
 * This function uses the "prob2" field of the "object allocation table",
 * and various local information, to calculate the "prob3" field of the
 * same table, which is then used to choose an "appropriate" object, in
 * a relatively efficient manner.
 *
 * It is (slightly) more likely to acquire an object of the given level
 * than one of a lower level.  This is done by choosing several objects
 * appropriate to the given level and keeping the "hardest" one.
 *
 * Note that if no objects are "appropriate", then this function will
 * fail, and return zero, but this should *almost* never happen.
 */
s16b get_obj_num(int level)
{
	int             i, j, p;
	int             k_idx;
	long            value, total;
	object_kind     *k_ptr;
	alloc_entry     *table = alloc_kind_table;


	/* Boost level */
	if (level > 0)
	{
		/* Occasional "boost" */
		if (one_in_(GREAT_OBJ))
		{
			/* What a bizarre calculation */
			/* level = 1 + (level * MAX_DEPTH / randint1(MAX_DEPTH)); */
			level = level + randint1(20);
		}
	}


	/* Reset total */
	total = 0L;

	/* Process probabilities */
	for (i = 0; i < alloc_kind_size; i++)
	{
		/* Objects are sorted by depth */
		if (table[i].level > level) break;

		/* Default */
		table[i].prob3 = 0;

		/* Access the index */
		k_idx = table[i].index;

		/* Access the actual kind */
		k_ptr = &k_info[k_idx];

		/* Hack -- prevent embedded chests */
		if (opening_chest && (k_ptr->tval == TV_CHEST)) continue;

		/* Accept */
		table[i].prob3 = table[i].prob2;

		/* Total */
		total += table[i].prob3;
	}

	/* No legal objects */
	if (total <= 0) return (0);


	/* Pick an object */
	value = randint0(total);

	/* Find the object */
	for (i = 0; i < alloc_kind_size; i++)
	{
		/* Found the entry */
		if (value < table[i].prob3) break;

		/* Decrement */
		value = value - table[i].prob3;
	}


	/* Power boost */
	p = randint0(100);

	/* Try for a "better" object once (50%) or twice (10%) */
	if (p < 60)
	{
		/* Save old */
		j = i;

		/* Pick a object */
		value = randint0(total);

		/* Find the object */
		for (i = 0; i < alloc_kind_size; i++)
		{
			/* Found the entry */
			if (value < table[i].prob3) break;

			/* Decrement */
			value = value - table[i].prob3;
		}

		/* Keep the "best" one */
		if (table[i].level < table[j].level) i = j;
	}

	/* Try for a "better" object twice (10%) */
	if (p < 10)
	{
		/* Save old */
		j = i;

		/* Pick a object */
		value = randint0(total);

		/* Find the object */
		for (i = 0; i < alloc_kind_size; i++)
		{
			/* Found the entry */
			if (value < table[i].prob3) break;

			/* Decrement */
			value = value - table[i].prob3;
		}

		/* Keep the "best" one */
		if (table[i].level < table[j].level) i = j;
	}


	/* Result */
	return (table[i].index);
}


/*
 * Known is true when the "attributes" of an object are "known".
 * These include tohit, todam, toac, cost, and pval (charges).
 *
 * Note that "knowing" an object gives you everything that an "awareness"
 * gives you, and much more.  In fact, the player is always "aware" of any
 * item of which he has full "knowledge".
 *
 * But having full knowledge of, say, one "wand of wonder", does not, by
 * itself, give you knowledge, or even awareness, of other "wands of wonder".
 * It happens that most "identify" routines (including "buying from a shop")
 * will make the player "aware" of the object as well as fully "know" it.
 *
 * This routine also removes any inscriptions generated by "feelings".
 */
void object_known(object_type *o_ptr)
{
	/* Remove "default inscriptions" */
	o_ptr->feeling = FEEL_NONE;

	/* Clear the "Felt" info */
	o_ptr->ident &= ~(IDENT_SENSE);

	/* Clear the "Empty" info */
	o_ptr->ident &= ~(IDENT_EMPTY);

	/* Now we know about the item */
	o_ptr->ident |= (IDENT_KNOWN);
}


/*
 * The player is now aware of the effects of the given object.
 */
void object_aware(const object_type *o_ptr)
{
	/* Fully aware of the effects */
	k_info[o_ptr->k_idx].aware = TRUE;
}


/*
 * Something has been "sampled"
 */
void object_tried(const object_type *o_ptr)
{
	/* Mark it as tried (even if "aware") */
	k_info[o_ptr->k_idx].tried = TRUE;
}


/*
 * Return the "value" of an "unknown" item
 * Make a guess at the value of non-aware items
 */
static s32b object_value_base(const object_type *o_ptr)
{
	/* Aware item -- use template cost */
	if (object_aware_p(o_ptr)) return (get_object_cost(o_ptr));

	/* Analyze the type */
	switch (o_ptr->tval)
	{

		/* Un-aware Food */
		case TV_FOOD: return (5L);

		/* Un-aware Potions */
		case TV_POTION: return (20L);

		/* Un-aware Scrolls */
		case TV_SCROLL: return (20L);

		/* Un-aware Staffs */
		case TV_STAFF: return (70L);

		/* Un-aware Wands */
		case TV_WAND: return (50L);

		/* Un-aware Rods */
		case TV_ROD: return (90L);

		/* Un-aware Rings */
		case TV_RING: return (45L);

		/* Un-aware Amulets */
		case TV_AMULET: return (45L);

		/* Figurines, relative to monster level */
		case TV_FIGURINE:
			return ((r_info[o_ptr->pval].level) * 50L);
	}

	/* Paranoia -- Oops */
	return (0L);
}


/* Return the value of the flags the object has... */
s32b flag_cost(const object_type * o_ptr, int plusses)
{
	s32b total = 0;
	u32b f1, f2, f3;
	int tmp_cost;
	int count;
	object_kind *k_ptr;

	object_flags(o_ptr, &f1, &f2, &f3);

	/* Remove base flags such as THROW of Daggers */
	k_ptr = &k_info[o_ptr->k_idx];

	f1 &= ~(k_ptr->flags1);
	f2 &= ~(k_ptr->flags2);
	f3 &= ~(k_ptr->flags3);

	/* 元々確定している能力を除く */
	if (o_ptr->name1)
	{
		artifact_type *a_ptr = &a_info[o_ptr->name1];

		f1 &= ~(a_ptr->flags1);
		f2 &= ~(a_ptr->flags2);
		f3 &= ~(a_ptr->flags3);
	}
	else if (o_ptr->name2)
	{
		ego_item_type *e_ptr = &e_info[o_ptr->name2];

		f1 &= ~(e_ptr->flags1);
		f2 &= ~(e_ptr->flags2);
		f3 &= ~(e_ptr->flags3);
	}
	else if (o_ptr->art_name)
	{
		total = 5000;
	}

	if (f1 & TR1_STR) total += (1500 * plusses);
	if (f1 & TR1_INT) total += (1500 * plusses);
	if (f1 & TR1_WIS) total += (1500 * plusses);
	if (f1 & TR1_DEX) total += (1500 * plusses);
	if (f1 & TR1_CON) total += (1500 * plusses);
	if (f1 & TR1_CHR) total += (500 * plusses);
	if (f1 & TR1_MAGIC_MASTERY) total += (1000 * plusses);
	if (f1 & TR1_STEALTH) total += (250 * plusses);
	if (f1 & TR1_SEARCH) total += (100 * plusses);
	if (f1 & TR1_INFRA) total += (150 * plusses);
	if (f1 & TR1_TUNNEL) total += (175 * plusses);
	if ((f1 & TR1_SPEED) && (plusses > 0))
		total += (10000 + (2500 * plusses));
	if ((f1 & TR1_BLOWS) && (plusses > 0))
		total += (10000 + (2500 * plusses));
	if (f3 & TR3_DEC_MANA) total += 10000;

	tmp_cost = 0;
	count = 0;
	if (f1 & TR1_CHAOTIC) {tmp_cost += 5000; count++;}
	if (f1 & TR1_VAMPIRIC) {tmp_cost += 6500; count++;}
	if (f1 & TR1_SLAY_ANIMAL) {tmp_cost += 1800; count++;}
	if (f1 & TR1_SLAY_HUMAN) {tmp_cost += 1800; count++;}
	if (f1 & TR1_SLAY_EVIL) {tmp_cost += 2500; count++;}
	if (f1 & TR1_SLAY_UNDEAD) {tmp_cost += 1800; count++;}
	if (f1 & TR1_SLAY_DEMON) {tmp_cost += 1800; count++;}
	if (f1 & TR1_SLAY_ORC) {tmp_cost += 1500; count++;}
	if (f1 & TR1_SLAY_TROLL) {tmp_cost += 1800; count++;}
	if (f1 & TR1_SLAY_GIANT) {tmp_cost += 1800; count++;}
	if (f1 & TR1_KILL_DRAGON) {tmp_cost += 2800; count++;}
	else if (f1 & TR1_SLAY_DRAGON) {tmp_cost += 1800; count++;}
	if (f1 & TR1_VORPAL) {tmp_cost += 3000; count++;}
	if (f1 & TR1_IMPACT) {tmp_cost += 2500; count++;}
	if (f1 & TR1_BRAND_POIS) {tmp_cost += 3800; count++;}
	if (f1 & TR1_BRAND_ACID) {tmp_cost += 3800; count++;}
	if (f1 & TR1_BRAND_ELEC) {tmp_cost += 3800; count++;}
	if (f1 & TR1_BRAND_FIRE) {tmp_cost += 2500; count++;}
	if (f1 & TR1_BRAND_COLD) {tmp_cost += 2500; count++;}
	total += (tmp_cost * count);

	if (f2 & TR2_SUST_STR) total += 850;
	if (f2 & TR2_SUST_INT) total += 850;
	if (f2 & TR2_SUST_WIS) total += 850;
	if (f2 & TR2_SUST_DEX) total += 850;
	if (f2 & TR2_SUST_CON) total += 850;
	if (f2 & TR2_SUST_CHR) total += 250;
	if (f2 & TR2_XXX1) total += 0;
	if (f2 & TR2_XXX2) total += 0;
	if (f2 & TR2_THROW) total += 5000;
	if (f2 & TR2_FREE_ACT) total += 4500;
	if (f2 & TR2_HOLD_LIFE) total += 8500;

	tmp_cost = 0;
	count = 0;
	if (f2 & TR2_IM_ACID) {tmp_cost += 10000; count += 2;}
	if (f2 & TR2_IM_ELEC) {tmp_cost += 10000; count += 2;}
	if (f2 & TR2_IM_FIRE) {tmp_cost += 10000; count += 2;}
	if (f2 & TR2_IM_COLD) {tmp_cost += 10000; count += 2;}
	if (f2 & TR2_REFLECT) {tmp_cost += 5000; count += 2;}
	if (f2 & TR2_RES_ACID) {tmp_cost += 500; count ++;}
	if (f2 & TR2_RES_ELEC) {tmp_cost += 500; count ++;} 
	if (f2 & TR2_RES_FIRE) {tmp_cost += 500; count ++;}
	if (f2 & TR2_RES_COLD) {tmp_cost += 500; count ++;}
	if (f2 & TR2_RES_POIS) {tmp_cost += 1000; count +=2;}
	if (f2 & TR2_RES_FEAR) {tmp_cost += 1000; count +=2;}
	if (f2 & TR2_RES_LITE) {tmp_cost += 800; count +=2;}
	if (f2 & TR2_RES_DARK) {tmp_cost += 800; count +=2;}
	if (f2 & TR2_RES_BLIND) {tmp_cost += 900; count +=2;}
	if (f2 & TR2_RES_CONF) {tmp_cost += 900; count +=2;}
	if (f2 & TR2_RES_SOUND) {tmp_cost += 900; count +=2;}
	if (f2 & TR2_RES_SHARDS) {tmp_cost += 900; count +=2;}
	if (f2 & TR2_RES_NETHER) {tmp_cost += 900; count +=2;}
	if (f2 & TR2_RES_NEXUS) {tmp_cost += 900; count +=2;}
	if (f2 & TR2_RES_CHAOS) {tmp_cost += 1000; count +=2;}
	if (f2 & TR2_RES_DISEN) {tmp_cost += 2000; count +=2;}
	total += (tmp_cost * count);

	if (f3 & TR3_SH_FIRE) total += 5000;
	if (f3 & TR3_SH_ELEC) total += 5000;
	if (f3 & TR3_SH_COLD) total += 5000;
	if (f3 & TR3_NO_TELE) total += 2500;
	if (f3 & TR3_NO_MAGIC) total += 2500;
	if (f3 & TR3_WRAITH) total += 250000;
	if (f3 & TR3_TY_CURSE) total -= 15000;
	if (f3 & TR3_HIDE_TYPE) total += 0;
	if (f3 & TR3_SHOW_MODS) total += 0;
	if (f3 & TR3_FEATHER) total += 1250;
	if (f3 & TR3_LITE) total += 1250;
	if (f3 & TR3_SEE_INVIS) total += 2000;
	if (f3 & TR3_TELEPATHY) total += 20000;
	if (f3 & TR3_SLOW_DIGEST) total += 750;
	if (f3 & TR3_REGEN) total += 2500;
	if (f3 & TR3_XTRA_MIGHT) total += 2250;
	if (f3 & TR3_XTRA_SHOTS) total += 10000;
	if (f3 & TR3_IGNORE_ACID) total += 100;
	if (f3 & TR3_IGNORE_ELEC) total += 100;
	if (f3 & TR3_IGNORE_FIRE) total += 100;
	if (f3 & TR3_IGNORE_COLD) total += 100;
	if (f3 & TR3_ACTIVATE) total += 100;
	if (f3 & TR3_DRAIN_EXP) total -= 12500;
	if (f3 & TR3_TELEPORT)
	{
		if (o_ptr->ident & IDENT_CURSED)
			total -= 7500;
		else
			total += 250;
	}
	if (f3 & TR3_AGGRAVATE) total -= 10000;
	if (f3 & TR3_BLESSED) total += 750;
	if (f3 & TR3_CURSED) total -= 5000;
	if (f3 & TR3_HEAVY_CURSE) total -= 12500;
	if (f3 & TR3_PERMA_CURSE) total -= 15000;

	/* Also, give some extra for activatable powers... */
	if (o_ptr->art_name && (o_ptr->art_flags3 & TR3_ACTIVATE))
	{
		const activation_type* const act_ptr = find_activation_info(o_ptr);
		if (act_ptr) {
			total += act_ptr->value;
		}
	}

	return total;
}


/*
 * Return the "real" price of a "known" item, not including discounts
 *
 * Wand and staffs get cost for each charge
 *
 * Armor is worth an extra 100 gold per bonus point to armor class.
 *
 * Weapons are worth an extra 100 gold per bonus point (AC,TH,TD).
 *
 * Missiles are only worth 5 gold per bonus point, since they
 * usually appear in groups of 20, and we want the player to get
 * the same amount of cash for any "equivalent" item.  Note that
 * missiles never have any of the "pval" flags, and in fact, they
 * only have a few of the available flags, primarily of the "slay"
 * and "brand" and "ignore" variety.
 *
 * Armor with a negative armor bonus is worthless.
 * Weapons with negative hit+damage bonuses are worthless.
 *
 * Every wearable item with a "pval" bonus is worth extra (see below).
 */
s32b object_value_real(const object_type *o_ptr)
{
	s32b value;

	u32b f1, f2, f3;

	object_kind *k_ptr = &k_info[o_ptr->k_idx];


	/* Hack -- "worthless" items */
	if (!get_object_cost(o_ptr)) return (0L);

	/* Base cost */
	value = get_object_cost(o_ptr);


	/* Extract some flags */
	object_flags(o_ptr, &f1, &f2, &f3);

	/* Artifact */
	if (o_ptr->name1)
	{
		artifact_type *a_ptr = &a_info[o_ptr->name1];

		/* Hack -- "worthless" artifacts */
		if (!a_ptr->cost) return (0L);

		/* Hack -- Use the artifact cost instead */
		value = a_ptr->cost;
		value += flag_cost(o_ptr, o_ptr->pval);
		return (value);
	}

	/* Ego-Item */
	else if (o_ptr->name2)
	{
		ego_item_type *e_ptr = &e_info[o_ptr->name2];

		/* Hack -- "worthless" ego-items */
		if (!e_ptr->cost) return (0L);

		/* Hack -- Reward the ego-item with a bonus */
		value += e_ptr->cost;
		value += flag_cost(o_ptr, o_ptr->pval);
	}
	else if (o_ptr->art_flags1 || o_ptr->art_flags2 || o_ptr->art_flags3)
	{
		value += flag_cost(o_ptr, o_ptr->pval);
	}


	/* Analyze pval bonus */
	switch (o_ptr->tval)
	{
		case TV_SHOT:
		case TV_ARROW:
		case TV_BOLT:
		case TV_BOW:
		case TV_DIGGING:
		case TV_HAFTED:
		case TV_POLEARM:
		case TV_SWORD:
		case TV_BOOTS:
		case TV_GLOVES:
		case TV_HELM:
		case TV_CROWN:
		case TV_SHIELD:
		case TV_CLOAK:
		case TV_SOFT_ARMOR:
		case TV_HARD_ARMOR:
		case TV_DRAG_ARMOR:
		case TV_LITE:
		case TV_AMULET:
		case TV_RING:
		{
			int pval2 = o_ptr->pval * o_ptr->pval;

			/* Hack -- Negative "pval" is always bad */
			if (o_ptr->pval < 0) return (0L);

			/* No pval */
			if (!o_ptr->pval) break;

			/* Give credit for stat bonuses */
			if (f1 & (TR1_STR)) value += (pval2 * 200L);
			if (f1 & (TR1_INT)) value += (pval2 * 200L);
			if (f1 & (TR1_WIS)) value += (pval2 * 200L);
			if (f1 & (TR1_DEX)) value += (pval2 * 200L);
			if (f1 & (TR1_CON)) value += (pval2 * 200L);
			if (f1 & (TR1_CHR)) value += (pval2 * 200L);

			if (f1 & (TR1_MAGIC_MASTERY)) value += (pval2 * 100L);

			/* Give credit for stealth and searching */
			if (f1 & (TR1_STEALTH)) value += (pval2 * 100L);
			if (f1 & (TR1_SEARCH)) value += (pval2 * 100L);

			/* Give credit for infra-vision and tunneling */
			if (f1 & (TR1_INFRA)) value += (o_ptr->pval * 50L);
			if (f1 & (TR1_TUNNEL)) value += (o_ptr->pval * 50L);

			/* Give credit for extra attacks */
			if (f1 & (TR1_BLOWS)) value += (pval2 * 5000L);

			/* Give credit for speed bonus */
			if (f1 & (TR1_SPEED)) value += (o_ptr->pval * 15000L);

			break;
		}
	}


	/* Analyze the item */
	switch (o_ptr->tval)
	{
		/* Wands/Staffs */
		case TV_WAND:
		{
			/* Pay extra for charges, depending on standard number of
			 * charges.  Handle new-style wands correctly. -LM-
			 */
			value += (value * o_ptr->pval / o_ptr->number / (k_ptr->pval * 2));

			/* Done */
			break;
		}
		case TV_STAFF:
		{
			/* Pay extra for charges, depending on standard number of
			 * charges.  -LM-
			 */
			value += (value * o_ptr->pval / (k_ptr->pval * 2));

			/* Done */
			break;
		}

		/* Rings/Amulets */
		case TV_RING:
		case TV_AMULET:
		{
			/* Hack -- negative bonuses are bad */
			if (o_ptr->to_a < 0) return (0L);
			if (o_ptr->to_h < 0) return (0L);
			if (o_ptr->to_d < 0) return (0L);

			/* Give credit for bonuses */
			value += ((o_ptr->to_h + o_ptr->to_d + o_ptr->to_a) * 100L);

			/* Done */
			break;
		}

		/* Armor */
		case TV_BOOTS:
		case TV_GLOVES:
		case TV_CLOAK:
		case TV_CROWN:
		case TV_HELM:
		case TV_SHIELD:
		case TV_SOFT_ARMOR:
		case TV_HARD_ARMOR:
		case TV_DRAG_ARMOR:
		{
			/* Hack -- negative armor bonus */
			if (o_ptr->to_a < 0) return (0L);

			/* Give credit for bonuses */
			value += ((o_ptr->to_h + o_ptr->to_d + o_ptr->to_a) * 100L);

			/* Done */
			break;
		}

		/* Bows/Weapons */
		case TV_BOW:
		case TV_DIGGING:
		case TV_HAFTED:
		case TV_SWORD:
		case TV_POLEARM:
		{
			/* Hack -- negative hit/damage bonuses */
			if (o_ptr->to_h + o_ptr->to_d < 0) return (0L);

			/* Factor in the bonuses */
			value += ((o_ptr->to_h + o_ptr->to_d + o_ptr->to_a) * 100L);

			/* Hack -- Factor in extra damage dice */
			if (o_ptr->tval != TV_BOW)
			{
				if (o_ptr->dd > k_ptr->dd)
					value += (o_ptr->dd - k_ptr->dd) * value;

				if (o_ptr->ds > k_ptr->ds)
					value += (o_ptr->ds - k_ptr->ds) * value;
			}

			/* Done */
			break;
		}

		/* Ammo */
		case TV_SHOT:
		case TV_ARROW:
		case TV_BOLT:
		{
			/* Hack -- negative hit/damage bonuses */
			if (o_ptr->to_h + o_ptr->to_d < 0) return (0L);

			/* Factor in the bonuses */
			value += ((o_ptr->to_h + o_ptr->to_d) * 5L);

			/* Hack -- Factor in extra damage dice */
			if ((o_ptr->dd > k_ptr->dd) && (o_ptr->ds == k_ptr->ds))
			{
				value += (o_ptr->dd - k_ptr->dd) * o_ptr->ds * 5L;
			}

			/* Done */
			break;
		}

		/* Figurines, relative to monster level */
		case TV_FIGURINE:
		{
			value = ((r_info[o_ptr->pval].level) * 50L);
			break;
		}
	}

	/* Return the value */
	return (value);
}


/*
 * Return the price of an item including plusses (and charges)
 *
 * This function returns the "value" of the given item (qty one)
 *
 * Never notice "unknown" bonuses or properties, including "curses",
 * since that would give the player information he did not have.
 *
 * Note that discounted items stay discounted forever, even if
 * the discount is "forgotten" by the player via memory loss.
 */
s32b object_value(const object_type *o_ptr)
{
	s32b value;


	/* Unknown items -- acquire a base value */
	if (object_known_p(o_ptr))
	{
		/* Broken items -- worthless */
		if (broken_p(o_ptr)) return (0L);

		/* Cursed items -- worthless */
		if (cursed_p(o_ptr)) return (0L);

		/* Real value (see above) */
		value = object_value_real(o_ptr);
	}

	/* Known items -- acquire the actual value */
	else
	{
		/* Hack -- Felt broken items */
		if ((o_ptr->ident & (IDENT_SENSE)) && broken_p(o_ptr)) return (0L);

		/* Hack -- Felt cursed items */
		if ((o_ptr->ident & (IDENT_SENSE)) && cursed_p(o_ptr)) return (0L);

		/* Base value (see above) */
		value = object_value_base(o_ptr);
	}


	/* Apply discount (if any) */
	if (o_ptr->discount) value -= (value * o_ptr->discount / 100L);


	/* Return the final value */
	return (value);
}


/*
 * Distribute charges of rods or wands.
 *
 * o_ptr = source item
 * q_ptr = target item, must be of the same type as o_ptr
 * amt   = number of items that are transfered
 */
void distribute_charges(object_type *o_ptr, object_type *q_ptr, int amt)
{
	/*
	 * Hack -- If rods or wands are dropped, the total maximum timeout or
	 * charges need to be allocated between the two stacks.  If all the items
	 * are being dropped, it makes for a neater message to leave the original
	 * stack's pval alone. -LM-
	 */
	if ((o_ptr->tval == TV_WAND) || (o_ptr->tval == TV_ROD))
	{
		q_ptr->pval = o_ptr->pval * amt / o_ptr->number;
		if (amt < o_ptr->number) o_ptr->pval -= q_ptr->pval;

		/* Hack -- Rods also need to have their timeouts distributed.  The
		 * dropped stack will accept all time remaining to charge up to its
		 * maximum.
		 */
		if ((o_ptr->tval == TV_ROD) && (o_ptr->timeout))
		{
			if (q_ptr->pval > o_ptr->timeout)
				q_ptr->timeout = o_ptr->timeout;
			else
				q_ptr->timeout = q_ptr->pval;

			if (amt < o_ptr->number) o_ptr->timeout -= q_ptr->timeout;
		}
	}
}

void reduce_charges(object_type *o_ptr, int amt)
{
	/*
	 * Hack -- If rods or wand are destroyed, the total maximum timeout or
	 * charges of the stack needs to be reduced, unless all the items are
	 * being destroyed. -LM-
	 */
	if (((o_ptr->tval == TV_WAND) || (o_ptr->tval == TV_ROD)) &&
		(amt < o_ptr->number))
	{
		o_ptr->pval -= o_ptr->pval * amt / o_ptr->number;
	}
}


/*
 * Determine if an item can "absorb" a second item
 *
 * See "object_absorb()" for the actual "absorption" code.
 *
 * If permitted, we allow staffs (if they are known to have equal charges
 * and both are either known or confirmed empty) and wands (if both are
 * either known or confirmed empty) and rods (in all cases) to combine.
 * Staffs will unstack (if necessary) when they are used, but wands and
 * rods will only unstack if one is dropped. -LM-
 *
 * If permitted, we allow weapons/armor to stack, if fully "known".
 *
 * Missiles will combine if both stacks have the same "known" status.
 * This is done to make unidentified stacks of missiles useful.
 *
 * Food, potions, scrolls, and "easy know" items always stack.
 *
 * Chests, and activatable items, never stack (for various reasons).
 */

/*
 * A "stack" of items is limited to less than or equal to 99 items (hard-coded).
 */
#define MAX_STACK_SIZE 99


/*
 *  Determine if an item can partly absorb a second item.
 *  Return maximum number of stack.
 */

int object_similar_part(const object_type *o_ptr, const object_type *j_ptr)
{
	/* Default maximum number of stack */
	int max_num = MAX_STACK_SIZE;

	/* Require identical object types */
	if (o_ptr->k_idx != j_ptr->k_idx) return 0;

	/* Analyze the items */
	switch (o_ptr->tval)
	{
		/* Chests and Statues*/
		case TV_CHEST:
		case TV_STATUE:
		{
			/* Never okay */
			return 0;
		}

		/* Figurines and Corpses*/
		case TV_FIGURINE:
		case TV_CORPSE:
		{
			/* Same monster */
			if (o_ptr->pval != j_ptr->pval) return 0;

			/* Assume okay */
			break;
		}

		/* Food and Potions and Scrolls */
		case TV_FOOD:
		case TV_POTION:
		case TV_SCROLL:
		{
			/* Assume okay */
			break;
		}

		/* Staffs */
		case TV_STAFF:
		{
			/* Require either knowledge or known empty for both staffs. */
			if ((!(o_ptr->ident & (IDENT_EMPTY)) &&
				!object_known_p(o_ptr)) ||
				(!(j_ptr->ident & (IDENT_EMPTY)) &&
				!object_known_p(j_ptr))) return 0;

			/* Require identical charges, since staffs are bulky. */
			if (o_ptr->pval != j_ptr->pval) return 0;

			/* Assume okay */
			break;
		}

		/* Wands */
		case TV_WAND:
		{
			/* Require either knowledge or known empty for both wands. */
			if ((!(o_ptr->ident & (IDENT_EMPTY)) &&
				!object_known_p(o_ptr)) ||
				(!(j_ptr->ident & (IDENT_EMPTY)) &&
				!object_known_p(j_ptr))) return 0;

			/* Wand charges combine in O&ZAngband.  */

			/* Assume okay */
			break;
		}

		/* Staffs and Wands and Rods */
		case TV_ROD:
		{
			/* Prevent overflow of timeout */
			max_num = MIN(max_num, MAX_SHORT / k_info[o_ptr->k_idx].pval);

			/* Assume okay */
			break;
		}

		/* Weapons and Armor */
		case TV_BOW:
		case TV_DIGGING:
		case TV_HAFTED:
		case TV_POLEARM:
		case TV_SWORD:
		case TV_BOOTS:
		case TV_GLOVES:
		case TV_HELM:
		case TV_CROWN:
		case TV_SHIELD:
		case TV_CLOAK:
		case TV_SOFT_ARMOR:
		case TV_HARD_ARMOR:
		case TV_DRAG_ARMOR:
		{
			/* Fall through */
		}

		/* Rings, Amulets, Lites */
		case TV_RING:
		case TV_AMULET:
		case TV_LITE:
		{
			/* Require full knowledge of both items */
			if (!object_known_p(o_ptr) || !object_known_p(j_ptr)) return 0;

			/* Fuel */
			if (o_ptr->xtra3 != j_ptr->xtra3) return 0;

			/* Fall through */
		}

		/* Missiles */
		case TV_BOLT:
		case TV_ARROW:
		case TV_SHOT:
		{
			/* Require identical knowledge of both items */
			if (object_known_p(o_ptr) != object_known_p(j_ptr)) return 0;

			/* Require identical "bonuses" */
			if (o_ptr->to_h != j_ptr->to_h) return 0;
			if (o_ptr->to_d != j_ptr->to_d) return 0;
			if (o_ptr->to_a != j_ptr->to_a) return 0;

			/* Require identical "pval" code */
			if (o_ptr->pval != j_ptr->pval) return 0;

			/* Require identical "artifact" names */
			if (o_ptr->name1 != j_ptr->name1) return 0;

			/* Random artifacts never stack */
			if (o_ptr->art_name || j_ptr->art_name) return 0;

			/* Require identical "ego-item" names */
			if (o_ptr->name2 != j_ptr->name2) return 0;

			/* Hack -- Never stack "powerful" items */
			if (o_ptr->xtra1 || j_ptr->xtra1) return 0;

			/* Hack -- Never stack recharging items */
			if (o_ptr->timeout || j_ptr->timeout) return 0;

			/* Require identical "values" */
			if (o_ptr->ac != j_ptr->ac) return 0;
			if (o_ptr->dd != j_ptr->dd) return 0;
			if (o_ptr->ds != j_ptr->ds) return 0;

			/* Probably okay */
			break;
		}

		/* Various */
		default:
		{
			/* Require knowledge */
			if (!object_known_p(o_ptr) || !object_known_p(j_ptr)) return 0;

			/* Probably okay */
			break;
		}
	}

	/* Hack -- Identical art_flags! */
	if ((o_ptr->art_flags1 != j_ptr->art_flags1) ||
	    (o_ptr->art_flags2 != j_ptr->art_flags2) ||
	    (o_ptr->art_flags3 != j_ptr->art_flags3))
		return 0;

	/* Hack -- Require identical "cursed" status */
	if ((o_ptr->ident & (IDENT_CURSED)) != (j_ptr->ident & (IDENT_CURSED))) return 0;

	/* Hack -- Require identical "broken" status */
	if ((o_ptr->ident & (IDENT_BROKEN)) != (j_ptr->ident & (IDENT_BROKEN))) return 0;

	/* Hack -- require semi-matching "inscriptions" */
	if (o_ptr->inscription && j_ptr->inscription &&
	    (o_ptr->inscription != j_ptr->inscription))
		return 0;

	/* Hack -- normally require matching "inscriptions" */
	if (!stack_force_notes && (o_ptr->inscription != j_ptr->inscription)) return 0;

	/* Hack -- normally require matching "discounts" */
	if (!stack_force_costs && (o_ptr->discount != j_ptr->discount)) return 0;

	/* They match, so they must be similar */
	return max_num;
}

/*
 *  Determine if an item can absorb a second item.
 */

bool object_similar(const object_type *o_ptr, const object_type *j_ptr)
{
	int total = o_ptr->number + j_ptr->number;

	/* Are these objects similar? */
	int max_num = object_similar_part(o_ptr, j_ptr);

	/* Return if not similar */
	if (!max_num) return FALSE;

	/* Maximal "stacking" limit */
	if (total > max_num) return FALSE;

	/* They match, so they must be similar */
	return TRUE;
}


/*
 * Allow one item to "absorb" another, assuming they are similar
 */
void object_absorb(object_type *o_ptr, object_type *j_ptr)
{
	int max_num = object_similar_part(o_ptr, j_ptr);
	int total = o_ptr->number + j_ptr->number;
	int diff = (total > max_num) ? total - max_num : 0;

	/* Combine quantity, lose excess items */
	o_ptr->number = (total > max_num) ? max_num : total;

	/* Hack -- blend "known" status */
	if (object_known_p(j_ptr)) object_known(o_ptr);

	/* Hack -- clear "storebought" if only one has it */
	if (((o_ptr->ident & IDENT_STORE) || (j_ptr->ident & IDENT_STORE)) &&
	    (!((o_ptr->ident & IDENT_STORE) && (j_ptr->ident & IDENT_STORE))))
	{
		if (j_ptr->ident & IDENT_STORE) j_ptr->ident &= 0xEF;
		if (o_ptr->ident & IDENT_STORE) o_ptr->ident &= 0xEF;
	}

	/* Hack -- blend "mental" status */
	if (j_ptr->ident & (IDENT_MENTAL)) o_ptr->ident |= (IDENT_MENTAL);

	/* Hack -- blend "inscriptions" */
	if (j_ptr->inscription) o_ptr->inscription = j_ptr->inscription;

	/* Hack -- blend "feelings" */
	if (j_ptr->feeling) o_ptr->feeling = j_ptr->feeling;

	/* Hack -- could average discounts XXX XXX XXX */
	/* Hack -- save largest discount XXX XXX XXX */
	if (o_ptr->discount < j_ptr->discount) o_ptr->discount = j_ptr->discount;

	/* Hack -- if rods are stacking, add the pvals (maximum timeouts) and current timeouts together. -LM- */
	if (o_ptr->tval == TV_ROD)
	{
		o_ptr->pval += j_ptr->pval * (j_ptr->number - diff) / j_ptr->number;
		o_ptr->timeout += j_ptr->timeout * (j_ptr->number - diff) / j_ptr->number;
	}

	/* Hack -- if wands are stacking, combine the charges. -LM- */
	if (o_ptr->tval == TV_WAND)
	{
		o_ptr->pval += j_ptr->pval * (j_ptr->number - diff) / j_ptr->number;
	}
}


/*
 * Find the index of the object_kind with the given tval and sval
 */
s16b lookup_kind(int tval, int sval)
{
	int k;
	int num = 0;
	int bk = 0;

	/* Look for it */
	for (k = 1; k < max_k_idx; k++)
	{
		object_kind *k_ptr = &k_info[k];

		/* Require correct tval */
		if (k_ptr->tval != tval) continue;

		/* Found a match */
		if (k_ptr->sval == sval) return (k);

		/* Ignore illegal items */
		if (sval != SV_ANY) continue;

		/* Apply the randomizer */
		if (!one_in_(++num)) continue;

		/* Use this value */
		bk = k;
	}

	/* Return this choice */
	if (sval == SV_ANY)
	{
		return bk;
	}

	/* Oops */
#ifdef JP
msg_format("アイテムがない (%d,%d)", tval, sval);
#else
	msg_format("No object (%d,%d)", tval, sval);
#endif


	/* Oops */
	return (0);
}


/*
 * Wipe an object clean.
 */
void object_wipe(object_type *o_ptr)
{
	/* Wipe the structure */
	(void) WIPE(o_ptr, object_type);
}


/*
 * Prepare an object based on an existing object
 */
void object_copy(const object_type *o_ptr, object_type *j_ptr)
{
	/* Copy the structure */
	(void)COPY(o_ptr, j_ptr, object_type);
}


/*
 * Prepare an object based on an object kind.
 */
void object_prep(object_type *o_ptr, int k_idx)
{
	object_kind *k_ptr = &k_info[k_idx];

	/* Clear the record */
	object_wipe(o_ptr);

	/* Save the kind index */
	o_ptr->k_idx = k_idx;

	/* Efficiency -- tval/sval */
	o_ptr->tval = k_ptr->tval;
	o_ptr->sval = k_ptr->sval;

	/* Default "pval" */
	o_ptr->pval = k_ptr->pval;

	/* Default number */
	o_ptr->number = 1;

	/* Default weight */
	o_ptr->weight = k_ptr->weight;

	/* Default magic */
	o_ptr->to_h = k_ptr->to_h;
	o_ptr->to_d = k_ptr->to_d;
	o_ptr->to_a = k_ptr->to_a;

	/* Default power */
	o_ptr->ac = k_ptr->ac;
	o_ptr->dd = k_ptr->dd;
	o_ptr->ds = k_ptr->ds;

	/* Hack -- worthless items are always "broken" */
	if (get_object_cost(o_ptr) <= 0) o_ptr->ident |= (IDENT_BROKEN);

	/* Hack -- cursed items are always "cursed" */
	if (k_ptr->flags3 & (TR3_CURSED)) o_ptr->ident |= (IDENT_CURSED);
}


/*
 * Help determine an "enchantment bonus" for an object.
 *
 * To avoid floating point but still provide a smooth distribution of bonuses,
 * we simply round the results of division in such a way as to "average" the
 * correct floating point value.
 *
 * This function has been changed.  It uses "randnor()" to choose values from
 * a normal distribution, whose mean moves from zero towards the max as the
 * level increases, and whose standard deviation is equal to 1/4 of the max,
 * and whose values are forced to lie between zero and the max, inclusive.
 *
 * Since the "level" rarely passes 100 before Morgoth is dead, it is very
 * rare to get the "full" enchantment on an object, even a deep levels.
 *
 * It is always possible (albeit unlikely) to get the "full" enchantment.
 *
 * A sample distribution of values from "m_bonus(10, N)" is shown below:
 *
 *   N       0     1     2     3     4     5     6     7     8     9    10
 * ---    ----  ----  ----  ----  ----  ----  ----  ----  ----  ----  ----
 *   0   66.37 13.01  9.73  5.47  2.89  1.31  0.72  0.26  0.12  0.09  0.03
 *   8   46.85 24.66 12.13  8.13  4.20  2.30  1.05  0.36  0.19  0.08  0.05
 *  16   30.12 27.62 18.52 10.52  6.34  3.52  1.95  0.90  0.31  0.15  0.05
 *  24   22.44 15.62 30.14 12.92  8.55  5.30  2.39  1.63  0.62  0.28  0.11
 *  32   16.23 11.43 23.01 22.31 11.19  7.18  4.46  2.13  1.20  0.45  0.41
 *  40   10.76  8.91 12.80 29.51 16.00  9.69  5.90  3.43  1.47  0.88  0.65
 *  48    7.28  6.81 10.51 18.27 27.57 11.76  7.85  4.99  2.80  1.22  0.94
 *  56    4.41  4.73  8.52 11.96 24.94 19.78 11.06  7.18  3.68  1.96  1.78
 *  64    2.81  3.07  5.65  9.17 13.01 31.57 13.70  9.30  6.04  3.04  2.64
 *  72    1.87  1.99  3.68  7.15 10.56 20.24 25.78 12.17  7.52  4.42  4.62
 *  80    1.02  1.23  2.78  4.75  8.37 12.04 27.61 18.07 10.28  6.52  7.33
 *  88    0.70  0.57  1.56  3.12  6.34 10.06 15.76 30.46 12.58  8.47 10.38
 *  96    0.27  0.60  1.25  2.28  4.30  7.60 10.77 22.52 22.51 11.37 16.53
 * 104    0.22  0.42  0.77  1.36  2.62  5.33  8.93 13.05 29.54 15.23 22.53
 * 112    0.15  0.20  0.56  0.87  2.00  3.83  6.86 10.06 17.89 27.31 30.27
 * 120    0.03  0.11  0.31  0.46  1.31  2.48  4.60  7.78 11.67 25.53 45.72
 * 128    0.02  0.01  0.13  0.33  0.83  1.41  3.24  6.17  9.57 14.22 64.07
 */
static s16b m_bonus(int max, int level)
{
	int bonus, stand, extra, value;


	/* Paranoia -- enforce maximal "level" */
	if (level > MAX_DEPTH - 1) level = MAX_DEPTH - 1;


	/* The "bonus" moves towards the max */
	bonus = ((max * level) / MAX_DEPTH);

	/* Hack -- determine fraction of error */
	extra = ((max * level) % MAX_DEPTH);

	/* Hack -- simulate floating point computations */
	if (randint0(MAX_DEPTH) < extra) bonus++;


	/* The "stand" is equal to one quarter of the max */
	stand = (max / 4);

	/* Hack -- determine fraction of error */
	extra = (max % 4);

	/* Hack -- simulate floating point computations */
	if (randint0(4) < extra) stand++;


	/* Choose an "interesting" value */
	value = randnor(bonus, stand);

	/* Enforce the minimum value */
	if (value < 0) return (0);

	/* Enforce the maximum value */
	if (value > max) return (max);

	/* Result */
	return (value);
}


/*
 * Cheat -- describe a created object for the user
 */
static void object_mention(object_type *o_ptr)
{
	char o_name[MAX_NLEN];

	/* Describe */
	object_desc(o_name, o_ptr, OD_NAME_ONLY | OD_STORE);

	/* Artifact */
	if (artifact_p(o_ptr))
	{
		/* Silly message */
#ifdef JP
msg_format("伝説のアイテム (%s)", o_name);
#else
		msg_format("Artifact (%s)", o_name);
#endif

	}

	/* Random Artifact */
	else if (o_ptr->art_name)
	{
#ifdef JP
msg_print("ランダム・アーティファクト");
#else
		msg_print("Random artifact");
#endif

	}

	/* Ego-item */
	else if (ego_item_p(o_ptr))
	{
		/* Silly message */
#ifdef JP
msg_format("名のあるアイテム (%s)", o_name);
#else
		msg_format("Ego-item (%s)", o_name);
#endif

	}

	/* Normal item */
	else
	{
		/* Silly message */
#ifdef JP
msg_format("アイテム (%s)", o_name);
#else
		msg_format("Object (%s)", o_name);
#endif

	}
}


/*
 * Mega-Hack -- Attempt to create one of the "Special Objects"
 *
 * We are only called from "make_object()", and we assume that
 * "apply_magic()" is called immediately after we return.
 *
 * Note -- see "make_artifact()" and "apply_magic()"
 */
static bool make_artifact_special(object_type *o_ptr)
{
	int i, k_idx;


	/* No artifacts in the town */
	if (!dun_level) return (FALSE);

	/* Check the artifact list (just the "specials") */
	for (i = 0; i < max_a_idx; i++)
	{
		artifact_type *a_ptr = &a_info[i];

		/* Skip "empty" artifacts */
		if (!a_ptr->name) continue;

		/* Skip not special artifacts */
		if (!(a_ptr->gen_flags & TRG_INSTA_ART)) continue;
		   
		/* Cannot make an artifact twice */
		if (a_ptr->cur_num) continue;

		if (a_ptr->gen_flags & TRG_QUESTITEM) continue;

		/* XXX XXX Enforce minimum "depth" (loosely) */
		if (a_ptr->level > dun_level)
		{
			/* Acquire the "out-of-depth factor" */
			int d = (a_ptr->level - dun_level) * 2;

			/* Roll for out-of-depth creation */
			if (randint0(d) != 0) continue;
		}

		/* Artifact "rarity roll" */
		if (randint0(a_ptr->rarity) != 0) continue;

		/* Find the base object */
		k_idx = lookup_kind(a_ptr->tval, a_ptr->sval);

		/* XXX XXX Enforce minimum "object" level (loosely) */
		if (k_info[k_idx].level > object_level)
		{
			/* Acquire the "out-of-depth factor" */
			int d = (k_info[k_idx].level - object_level) * 5;

			/* Roll for out-of-depth creation */
			if (randint0(d) != 0) continue;
		}

		/* Assign the template */
		object_prep(o_ptr, k_idx);

		/* Mega-Hack -- mark the item as an artifact */
		o_ptr->name1 = i;

		/* Success */
		return (TRUE);
	}

	/* Failure */
	return (FALSE);
}


/*
 * Attempt to change an object into an artifact
 *
 * This routine should only be called by "apply_magic()"
 *
 * Note -- see "make_artifact_special()" and "apply_magic()"
 */
static bool make_artifact(object_type *o_ptr)
{
	int i;


	/* No artifacts in the town */
	if (!dun_level) return (FALSE);

	/* Themed object */
	if (get_obj_num_hook) return (FALSE);

	/* Paranoia -- no "plural" artifacts */
	if (o_ptr->number != 1) return (FALSE);

	/* Check the artifact list (skip the "specials") */
	for (i = ART_MIN_NORMAL; i < max_a_idx; i++)
	{
		artifact_type *a_ptr = &a_info[i];

		/* Skip "empty" items */
		if (!a_ptr->name) continue;

		/* Cannot make an artifact twice */
		if (a_ptr->cur_num) continue;

		if (a_ptr->gen_flags & TRG_QUESTITEM) continue;

		/* Must have the correct fields */
		if (a_ptr->tval != o_ptr->tval) continue;
		if (a_ptr->sval != o_ptr->sval) continue;

		/* XXX XXX Enforce minimum "depth" (loosely) */
		if (a_ptr->level > dun_level)
		{
			/* Acquire the "out-of-depth factor" */
			int d = (a_ptr->level - dun_level) * 2;

			/* Roll for out-of-depth creation */
			if (randint0(d) != 0) continue;
		}

		/* We must make the "rarity roll" */
		if (randint0(a_ptr->rarity) != 0) continue;

		/* Hack -- mark the item as an artifact */
		o_ptr->name1 = i;

		/* Hack: Some artifacts get random extra powers */
		random_artifact_resistance(o_ptr, a_ptr);

		/* Success */
		return (TRUE);
	}

	/* Failure */
	return (FALSE);
}


static byte get_random_ego(byte slot, bool good, int level)
{
	int i, value;
	ego_item_type *e_ptr;

	long total = 0L;
	
	for (i = 1; i < max_e_idx; i++)
	{
		e_ptr = &e_info[i];
		
		if (e_ptr->slot == slot && level >= e_ptr->level 
		    && ((good && e_ptr->rating) || (!good && !e_ptr->rating)) )
		{
			if (e_ptr->rarity)
				total += (240 / e_ptr->rarity);
		}
	}

	value = randint1(total);

	for (i = 1; i < max_e_idx; i++)
	{
		e_ptr = &e_info[i];
		
		if (e_ptr->slot == slot  && level >= e_ptr->level
		    && ((good && e_ptr->rating) || (!good && !e_ptr->rating)) )
		{
			if (e_ptr->rarity)
				value -= (240 / e_ptr->rarity);
			if (value <= 0L) break;
		}
	}
	return (byte)i;
}


/*
 * Apply magic to an item known to be a "weapon"
 *
 * Hack -- note special base damage dice boosting
 * Hack -- note special processing for weapon/digger
 */
static void a_m_aux_1(object_type *o_ptr, int level, int power)
{
	int tohit1 = randint1(5) + m_bonus(5, level);
	int todam1 = randint1(5) + m_bonus(5, level);

	int tohit2 = m_bonus(5, level);
	int todam2 = m_bonus(5, level);

	/* Good */
	if (power > 0)
	{
		/* Enchant */
		o_ptr->to_h += tohit1;
		o_ptr->to_d += todam1;

		/* Very good */
		if (power > 1)
		{
			/* Enchant again */
			o_ptr->to_h += tohit2;
			o_ptr->to_d += todam2;
		}
	}

	/* Cursed */
	else if (power < 0)
	{
		/* Penalize */
		o_ptr->to_h -= tohit1;
		o_ptr->to_d -= todam1;

		/* Very cursed */
		if (power < -1)
		{
			/* Penalize again */
			o_ptr->to_h -= tohit2;
			o_ptr->to_d -= todam2;
		}

		/* Cursed (if "bad") */
		if (o_ptr->to_h + o_ptr->to_d < 0) o_ptr->ident |= (IDENT_CURSED);
	}


	/* Analyze type */
	switch (o_ptr->tval)
	{
		case TV_DIGGING:
		{
			/* Very good */
			if (power > 1)
			{
				if (one_in_(40)) {
					create_artifact(o_ptr, FALSE);
					break;
				}

				/* Special Ego-item */
				o_ptr->name2 = get_random_ego(INVEN_DIGGING, TRUE, level);
				
				/* Paranoia */
				if (o_ptr->name2 >= max_e_idx) o_ptr->name2 = EGO_DIGGING;

				switch(o_ptr->name2)
				{
				case EGO_DIGGING:
					if (one_in_(2 + (o_ptr->dd / 2))) o_ptr->dd++;
					break;
				case EGO_DISRUPTION:
					o_ptr->dd++;
					while (one_in_(o_ptr->dd / 2 + 1))
					{
						o_ptr->dd++;
					}
					if (one_in_(5)) o_ptr->art_flags1 |= TR1_IMPACT;
					break;
				}
			}

			/* Very bad */
			else if (power < -1)
			{
				/* Hack -- Horrible digging bonus */
				o_ptr->pval = 0 - (5 + randint1(5));
			}

			/* Bad */
			else if (power < 0)
			{
				/* Hack -- Reverse digging bonus */
				o_ptr->pval = 0 - (o_ptr->pval);
			}

			break;
		}


		case TV_HAFTED:
		case TV_POLEARM:
		case TV_SWORD:
		{
			/* Very Good */
			if (power > 1)
			{
				if (one_in_(40)) {
					create_artifact(o_ptr, FALSE);
					break;
				}
				while (1)
				{
					o_ptr->name2 = get_random_ego(INVEN_WIELD, TRUE, level);
					if (o_ptr->name2 == EGO_SHARPNESS && o_ptr->tval != TV_SWORD)
						continue;
					if (o_ptr->name2 == EGO_EARTHQUAKES && o_ptr->tval != TV_HAFTED)
						continue;
					break;
				}

				switch (o_ptr->name2)
				{
				case EGO_HA:
					if (one_in_(4)) o_ptr->art_flags1 |= TR1_BLOWS;
					break;
				case EGO_DF:
					if (one_in_(3)) o_ptr->art_flags2 |= TR2_RES_POIS;
					if (one_in_(3)) o_ptr->art_flags3 |= TR3_WARNING;
					break;
				case EGO_SLAY_DRAGON:
					if (one_in_(3)) o_ptr->art_flags2 |= TR2_RES_POIS;
					break;
				case EGO_WEST:
					if (one_in_(3)) o_ptr->art_flags2 |= TR2_RES_FEAR;
					break;
				case EGO_SLAYING_WEAPON:
					o_ptr->dd++;
					while (one_in_(o_ptr->dd / 2 + 1))
					{
						o_ptr->dd++;
					}
					if (one_in_(5)) o_ptr->art_flags1 |= TR1_BRAND_POIS;
					break;
				case EGO_PATTERN:
					if (one_in_(3)) o_ptr->art_flags2 |= TR2_HOLD_LIFE;
					if (one_in_(3)) o_ptr->art_flags1 |= TR1_DEX;
					if (one_in_(5)) o_ptr->art_flags2 |= TR2_RES_FEAR;
					break;
				case EGO_SHARPNESS:
					o_ptr->pval = m_bonus(5, level) + 1;
					break;
				case EGO_EARTHQUAKES:
					o_ptr->pval = m_bonus(3, level);
					if (one_in_(3)) o_ptr->art_flags1 |= TR1_BLOWS;
					break;
				}

				/* Hack -- Some Powerful Ego gets extra dice */
				if (o_ptr->name2 == EGO_HA ||
				    o_ptr->name2 == EGO_PATTERN ||
				    o_ptr->name2 == EGO_WEST ||
					o_ptr->name2 == EGO_SHARPNESS)
				{
					if (one_in_(1 + (o_ptr->dd / 2))) o_ptr->dd++;
				}

				/* Hack -- Super-charge the damage dice */
				while (one_in_(10L * o_ptr->dd * o_ptr->ds)) o_ptr->dd++;

				/* Hack -- Lower the damage dice */
				if (o_ptr->dd > 9) o_ptr->dd = 9;
			}

			/* Very cursed */
			else if (power < -1)
			{
				/* Roll for ego-item */
				if ((randint0(MAX_DEPTH) < level) || (power < -2))
				{
					while (1)
					{
						o_ptr->name2 = get_random_ego(INVEN_WIELD, FALSE, level);
						if (o_ptr->name2 == EGO_WEIRD && o_ptr->tval != TV_SWORD)
							continue;
						break;
					}
					switch (o_ptr->name2)
					{
					case EGO_MORGUL:
						if (one_in_(6)) o_ptr->art_flags3 |= TR3_TY_CURSE;
						if (one_in_(1 + (o_ptr->dd / 2))) o_ptr->dd++;
						break;
					case EGO_WEIRD:
						o_ptr->dd++;
						while (one_in_(o_ptr->dd / 2 + 1))
						{
							o_ptr->dd++;
						}
						if (one_in_(4)) o_ptr->art_flags1 |= TR1_BRAND_POIS;
						if (one_in_(4)) o_ptr->art_flags2 |= TR2_RES_NETHER;
						if (one_in_(3)) o_ptr->art_flags3 |= TR3_NO_MAGIC;
						if (one_in_(6)) o_ptr->art_flags3 |= TR3_NO_TELE;
						if (one_in_(6)) o_ptr->art_flags3 |= TR3_TY_CURSE;
					}
				}

				/* Hack -- Some Powerful Ego gets extra dice */
				if (o_ptr->name2 == EGO_MORGUL)
				{
					/* Hack -- Super-charge the damage dice */
					while (one_in_(10L * o_ptr->dd * o_ptr->ds)) o_ptr->dd++;

					/* Hack -- Lower the damage dice */
					if (o_ptr->dd > 9) o_ptr->dd = 9;
				}
			}
			break;
		}


		case TV_BOW:
		{
			/* Very good */
			if (power > 1)
			{
				if (one_in_(20))
				{
					create_artifact(o_ptr, FALSE);
					break;
				}
				o_ptr->name2 = get_random_ego(INVEN_BOW, TRUE, level);
			}

			break;
		}


		case TV_BOLT:
		case TV_ARROW:
		case TV_SHOT:
		{
			/* Very good */
			if (power > 1)
			{
				o_ptr->name2 = get_random_ego(INVEN_AMMO, TRUE, level);

				/* Hack -- super-charge the damage dice */
				while (one_in_(10L * o_ptr->dd * o_ptr->ds)) o_ptr->dd++;

				/* Hack -- restrict the damage dice */
				if (o_ptr->dd > 9) o_ptr->dd = 9;
			}

			/* Very cursed */
			else if (power < -1)
			{
				/* Roll for ego-item */
				if ((randint0(MAX_DEPTH) < level) || (power < -2))
				{
					o_ptr->name2 = get_random_ego(INVEN_AMMO, FALSE, level);
				}
			}

			break;
		}
	}
}


static void dragon_resist(object_type * o_ptr)
{
	do
	{
		if (one_in_(4))
			one_dragon_ele_resistance(o_ptr);
		else
			one_high_resistance(o_ptr);
	}
	while (one_in_(2));
}


/*
 * Apply magic to an item known to be "armor"
 *
 * Hack -- note special processing for crown/helm
 * Hack -- note special processing for robe of permanence
 */
static void a_m_aux_2(object_type *o_ptr, int level, int power)
{
	int toac1 = randint1(5) + m_bonus(5, level);

	int toac2 = m_bonus(5, level);

	/* Good */
	if (power > 0)
	{
		/* Enchant */
		o_ptr->to_a += toac1;

		/* Very good */
		if (power > 1)
		{
			/* Enchant again */
			o_ptr->to_a += toac2;
		}
	}

	/* Cursed */
	else if (power < 0)
	{
		/* Penalize */
		o_ptr->to_a -= toac1;

		/* Very cursed */
		if (power < -1)
		{
			/* Penalize again */
			o_ptr->to_a -= toac2;
		}

		/* Cursed (if "bad") */
		if (o_ptr->to_a < 0) o_ptr->ident |= (IDENT_CURSED);
	}


	/* Analyze type */
	switch (o_ptr->tval)
	{
		case TV_DRAG_ARMOR:
		{
			if (one_in_(50)) create_artifact(o_ptr, FALSE);

			/* Mention the item */
			if (cheat_peek) object_mention(o_ptr);

			break;
		}

		case TV_HARD_ARMOR:
		case TV_SOFT_ARMOR:
		{
			if ((o_ptr->tval == TV_HARD_ARMOR) &&
				(o_ptr->sval == SV_DRAGON_ARMOR))
			{
				/* Mention the item */
				if (cheat_peek) object_mention(o_ptr);
				dragon_resist(o_ptr);

				/* Occationaly permit ego */
				if (!one_in_(3)) break;
			}

			/* Very good */
			if (power > 1)
			{
				/* Hack -- Try for "Robes of the Magi" */
				if ((o_ptr->tval == TV_SOFT_ARMOR) &&
				    (o_ptr->sval == SV_ROBE) &&
				    (randint0(100) < 10))
				{
					o_ptr->name2 = EGO_PERMANENCE;
					break;
				}

				if (one_in_(20))
				{
					create_artifact(o_ptr, FALSE);
					break;
				}
				o_ptr->name2 = get_random_ego(INVEN_BODY, TRUE, level);

				switch (o_ptr->name2)
				{
				case EGO_RESISTANCE:
					if (one_in_(4)) o_ptr->art_flags2 |= TR2_RES_POIS;
					break;
				}
			}

			break;
		}

		case TV_SHIELD:
		{

			if (o_ptr->sval == SV_DRAGON_SHIELD)
			{
				/* Mention the item */
				if (cheat_peek) object_mention(o_ptr);
				dragon_resist(o_ptr);

				/* Occationaly permit ego */
				if (!one_in_(3)) break;
			}

			/* Very good */
			if (power > 1)
			{
				if (one_in_(20))
				{
					create_artifact(o_ptr, FALSE);
					break;
				}
				o_ptr->name2 = get_random_ego(INVEN_ARM, TRUE, level);

				switch (o_ptr->name2)
				{
				case EGO_ENDURANCE:
					if (one_in_(4)) o_ptr->art_flags2 |= TR2_RES_POIS;
					break;
				}
			}
			break;
		}

		case TV_GLOVES:
		{
			if (o_ptr->sval == SV_SET_OF_DRAGON_GLOVES)
			{
				/* Mention the item */
				if (cheat_peek) object_mention(o_ptr);
				dragon_resist(o_ptr);

				/* Occationaly permit ego */
				if (!one_in_(3)) break;
			}

			/* Very good */
			if (power > 1)
			{
				if (one_in_(20))
				{
					create_artifact(o_ptr, FALSE);
					break;
				}
				o_ptr->name2 = get_random_ego(INVEN_HANDS, TRUE, level);
			}

			/* Very cursed */
			else if (power < -1)
			{
				o_ptr->name2 = get_random_ego(INVEN_HANDS, FALSE, level);
			}

			break;
		}

		case TV_BOOTS:
		{
			if (o_ptr->sval == SV_PAIR_OF_DRAGON_BOOTS)
			{
				/* Mention the item */
				if (cheat_peek) object_mention(o_ptr);
				dragon_resist(o_ptr);

				/* Occationaly permit ego */
				if (!one_in_(3)) break;
			}

			/* Very good */
			if (power > 1)
			{
				if (one_in_(20))
				{
					create_artifact(o_ptr, FALSE);
					break;
				}
				o_ptr->name2 = get_random_ego(INVEN_FEET, TRUE, level);

				switch (o_ptr->name2)
				{
				case EGO_LEVITATION:
					if (one_in_(2)) one_high_resistance(o_ptr);
					break;
				}
			}

			/* Very cursed */
			else if (power < -1)
			{
				o_ptr->name2 = get_random_ego(INVEN_FEET, FALSE, level);
			}

			break;
		}

		case TV_CROWN:
		{
			/* Very good */
			if (power > 1)
			{
				if (one_in_(20))
				{
					create_artifact(o_ptr, FALSE);
					break;
				}
				while (1)
				{
					bool ok_flag = TRUE;
					o_ptr->name2 = get_random_ego(INVEN_HEAD, TRUE, level);

					switch (o_ptr->name2)
					{
					case EGO_MAGI:
					case EGO_MIGHT:
					case EGO_TELEPATHY:
					case EGO_LORDLINESS:
						break;
					case EGO_SEEING:
						if (one_in_(3))
						{
							o_ptr->art_flags3 |= TR3_ACTIVATE;
							o_ptr->xtra2 = ACT_DETECT_MONSTERS;
						}
						if (one_in_(3)) o_ptr->art_flags3 |= TR3_TELEPATHY;
						break;
					default:/* not existing crown (wisdom,lite, etc...) */
						ok_flag = FALSE;
					}
					if (ok_flag)
						break; /* while (1) */
				}
				break;
			}

			/* Very cursed */
			else if (power < -1)
			{
				o_ptr->name2 = get_random_ego(INVEN_HEAD, FALSE, level);

				if (o_ptr->name2 == EGO_ANCIENT_CURSE)
				{
					/* Crown of Ancient Curse is always heavy cursed */
					o_ptr->art_flags3 |= TR3_HEAVY_CURSE;

					if (one_in_(3)) o_ptr->art_flags3 |= TR3_TY_CURSE;
				}
			}

			break;
		}

		case TV_HELM:
		{
			if (o_ptr->sval == SV_DRAGON_HELM)
			{
				/* Mention the item */
				if (cheat_peek) object_mention(o_ptr);
				dragon_resist(o_ptr);

				/* Occationaly permit ego */
				if (!one_in_(3)) break;
			}

			/* Very good */
			if (power > 1)
			{
				if (one_in_(20))
				{
					create_artifact(o_ptr, FALSE);
					break;
				}
				while (1)
				{
					bool ok_flag = TRUE;
					o_ptr->name2 = get_random_ego(INVEN_HEAD, TRUE, level);

					switch (o_ptr->name2)
					{
					case EGO_INTELLIGENCE:
					case EGO_WISDOM:
					case EGO_BEAUTY:
						break;
					case EGO_PROTECT_HELM:
						switch(o_ptr->sval)
						{
							case SV_IRON_HELM:
							case SV_STEEL_HELM:
								/* Protect helms have extra high AC */
								o_ptr->to_a += 15;
								break;
							default:
								ok_flag = FALSE;
						}
						break;
					case EGO_SEEING:
						if (one_in_(7))
						{
							o_ptr->art_flags3 |= TR3_ACTIVATE;
							o_ptr->xtra2 = ACT_DETECT_MONSTERS;
						}
						if (one_in_(7)) o_ptr->art_flags3 |= TR3_TELEPATHY;
						break;
					default:/* not existing helm (Magi, Might, etc...)*/
						ok_flag = FALSE;
					}
					if (ok_flag)
						break; /* while (1) */
				}
				break;
			}
			/* Very cursed */
			else if (power < -1)
			{
				do
				{
					o_ptr->name2 = get_random_ego(INVEN_HEAD, FALSE, level);
				}
				while (o_ptr->name2 == EGO_ANCIENT_CURSE);
			}
			break;
		}

		case TV_CLOAK:
		{
			if (o_ptr->sval == SV_ELVEN_CLOAK)
				o_ptr->pval = randint1(4); /* No cursed elven cloaks...? */

			/* Very good */
			if (power > 1)
			{
				if (one_in_(20))
				{
					create_artifact(o_ptr, FALSE);
					break;
				}

				o_ptr->name2 = get_random_ego(INVEN_OUTER, TRUE, level);
			}

			/* Very cursed */
			else if (power < -1)
			{
				o_ptr->name2 = get_random_ego(INVEN_OUTER, FALSE, level);
			}

			break;
		}
	}
}


/*
 * Apply magic to an item known to be a "ring" or "amulet"
 *
 * Hack -- note special "pval boost" code for ring of speed
 * Hack -- note that some items must be cursed (or blessed)
 */
static void a_m_aux_3(object_type *o_ptr, int level, int power)
{
	/* Apply magic (good or bad) according to type */
	switch (o_ptr->tval)
	{
		case TV_RING:
		{
			/* Analyze */
			switch (o_ptr->sval)
			{

				case SV_RING_ATTACKS:
				{
					/* Stat bonus */
#ifdef TINYANGBAND
					o_ptr->pval = 1;
#else
					o_ptr->pval = m_bonus(2, level);
#endif
					if (one_in_(15)) o_ptr->pval++;
					if (o_ptr->pval < 1) o_ptr->pval = 1;

					/* Cursed */
					if (power < 0)
					{
						/* Broken */
						o_ptr->ident |= (IDENT_BROKEN);

						/* Cursed */
						o_ptr->ident |= (IDENT_CURSED);

						/* Reverse pval */
						o_ptr->pval = 0 - (o_ptr->pval);
					}

					break;
				}

				case SV_RING_SHOTS:
				{
					break;
				}

				/* Strength, Constitution, Dexterity, Intelligence */
				case SV_RING_STR:
				case SV_RING_CON:
				case SV_RING_DEX:
				{
					/* Stat bonus */
					o_ptr->pval = 1 + m_bonus(5, level);

					/* Cursed */
					if (power < 0)
					{
						/* Broken */
						o_ptr->ident |= (IDENT_BROKEN);

						/* Cursed */
						o_ptr->ident |= (IDENT_CURSED);

						/* Reverse pval */
						o_ptr->pval = 0 - (o_ptr->pval);
					}

					break;
				}

				/* Ring of Speed! */
				case SV_RING_SPEED:
				{
					/* Base speed (1 to 10) */
					o_ptr->pval = randint1(4) + m_bonus(4, level);

					/* Super-charge the ring */
					while (one_in_(2)) o_ptr->pval++;

					/* Cursed Ring */
					if (power < 0)
					{
						/* Broken */
						o_ptr->ident |= (IDENT_BROKEN);

						/* Cursed */
						o_ptr->ident |= (IDENT_CURSED);

						/* Reverse pval */
						o_ptr->pval = 0 - (o_ptr->pval);

						break;
					}

					/* Mention the item */
					if (cheat_peek) object_mention(o_ptr);

					break;
				}

				case SV_RING_LORDLY:
				{
					do
					{
						one_lordly_high_resistance(o_ptr);
					}
					while (one_in_(4));

					/* Bonus to armor class */
					o_ptr->to_a = rand_range(10, 15) + m_bonus(10, level);
				}
				break;

				/* Searching */
				case SV_RING_SEARCHING:
				{
					/* Bonus to searching */
					o_ptr->pval = 1 + m_bonus(5, level);

					/* Cursed */
					if (power < 0)
					{
						/* Broken */
						o_ptr->ident |= (IDENT_BROKEN);

						/* Cursed */
						o_ptr->ident |= (IDENT_CURSED);

						/* Reverse pval */
						o_ptr->pval = 0 - (o_ptr->pval);
					}

					break;
				}

				/* Flames, Acid, Ice */
				case SV_RING_FLAMES:
				case SV_RING_ACID:
				case SV_RING_ICE:
				case SV_RING_ELEC:
				{
					/* Bonus to armor class */
					o_ptr->to_a = rand_range(5, 10) + m_bonus(5, level);
					break;
				}

				/* Ring of damage */
				case SV_RING_DAMAGE:
				{
					/* Bonus to damage */
					o_ptr->to_d = rand_range(5, 10) + m_bonus(5, level);

					/* Cursed */
					if (power < 0)
					{
						/* Broken */
						o_ptr->ident |= (IDENT_BROKEN);

						/* Cursed */
						o_ptr->ident |= (IDENT_CURSED);

						/* Reverse bonus */
						o_ptr->to_d = 0 - o_ptr->to_d;
					}

					break;
				}

				/* Ring of Accuracy */
				case SV_RING_ACCURACY:
				{
					/* Bonus to hit */
					o_ptr->to_h = rand_range(5, 10) + m_bonus(5, level);

					/* Cursed */
					if (power < 0)
					{
						/* Broken */
						o_ptr->ident |= (IDENT_BROKEN);

						/* Cursed */
						o_ptr->ident |= (IDENT_CURSED);

						/* Reverse tohit */
						o_ptr->to_h = 0 - o_ptr->to_h;
					}

					break;
				}

				/* Ring of Protection */
				case SV_RING_PROTECTION:
				{
					/* Bonus to armor class */
					o_ptr->to_a = rand_range(5, 10) + m_bonus(10, level);

					/* Cursed */
					if (power < 0)
					{
						/* Broken */
						o_ptr->ident |= (IDENT_BROKEN);

						/* Cursed */
						o_ptr->ident |= (IDENT_CURSED);

						/* Reverse toac */
						o_ptr->to_a = 0 - o_ptr->to_a;
					}

					break;
				}

				/* Ring of Slaying */
				case SV_RING_SLAYING:
				{
					/* Bonus to damage and to hit */
					o_ptr->to_d = randint1(5) + m_bonus(8, level);
					o_ptr->to_h = randint1(5) + m_bonus(8, level);

					/* Cursed */
					if (power < 0)
					{
						/* Broken */
						o_ptr->ident |= (IDENT_BROKEN);

						/* Cursed */
						o_ptr->ident |= (IDENT_CURSED);

						/* Reverse bonuses */
						o_ptr->to_h = 0 - o_ptr->to_h;
						o_ptr->to_d = 0 - o_ptr->to_d;
					}

					break;
				}

				/* Ring of Muscle */
				case SV_RING_MUSCLE:
				{
					/* Stat bonus */
					o_ptr->pval = 1 + m_bonus(3, level);

					/* Cursed */
					if (power < 0)
					{
						/* Broken */
						o_ptr->ident |= (IDENT_BROKEN);

						/* Cursed */
						o_ptr->ident |= (IDENT_CURSED);

						/* Reverse pval */
						o_ptr->pval = 0 - (o_ptr->pval);
					}

					break;
				}

			}

			/* Randart ring */
			if (power && (level > 19) && one_in_(300 - level * 2) &&
				!(o_ptr->ident & IDENT_CURSED))
			{
				create_artifact(o_ptr, FALSE);
			}
			break;
		}

		case TV_AMULET:
		{
			/* Analyze */
			switch (o_ptr->sval)
			{
				/* Amulet of wisdom/charisma */
				case SV_AMULET_WISDOM:
				case SV_AMULET_CHARISMA:
				case SV_AMULET_MAGIC_MASTERY:
				{
					o_ptr->pval = 1 + m_bonus(3, level);

					/* Cursed */
					if (power < 0)
					{
						/* Broken */
						o_ptr->ident |= (IDENT_BROKEN);

						/* Cursed */
						o_ptr->ident |= (IDENT_CURSED);

						/* Reverse bonuses */
						o_ptr->pval = 0 - o_ptr->pval;
					}

					break;
				}

				case SV_AMULET_NO_MAGIC: case SV_AMULET_NO_TELE:
				{
					if (power < 0)
					{
						o_ptr->ident |= (IDENT_CURSED);
					}
					break;
				}

				case SV_AMULET_RESISTANCE:
				{
					if (one_in_(3)) one_high_resistance(o_ptr);
					if (one_in_(5)) o_ptr->art_flags2 |= TR2_RES_POIS;
				}
				break;

				/* Amulet of searching */
				case SV_AMULET_SEARCHING:
				{
					o_ptr->pval = randint1(5) + m_bonus(5, level);

					/* Cursed */
					if (power < 0)
					{
						/* Broken */
						o_ptr->ident |= (IDENT_BROKEN);

						/* Cursed */
						o_ptr->ident |= (IDENT_CURSED);

						/* Reverse bonuses */
						o_ptr->pval = 0 - (o_ptr->pval);
					}

					break;
				}

				/* Amulet of the Magi -- never cursed */
				case SV_AMULET_THE_MAGI:
				{
					o_ptr->pval = randint1(5) + m_bonus(5, level);
					o_ptr->to_a = randint1(5) + m_bonus(5, level);

					if (one_in_(3)) o_ptr->art_flags3 |= TR3_SLOW_DIGEST;

					/* Mention the item */
					if (cheat_peek) object_mention(o_ptr);

					break;
				}

				/* Amulet of the Hero -- never cursed */
				case SV_AMULET_THE_HERO:
				{
					o_ptr->pval = randint1(5) + m_bonus(5, level);
					o_ptr->to_a = randint1(5) + m_bonus(5, level);
					o_ptr->to_h = randint1(3) + m_bonus(5, level);
					o_ptr->to_d = randint1(3) + m_bonus(5, level);

					if (one_in_(3)) o_ptr->art_flags3 |= TR3_SLOW_DIGEST;
					if (one_in_(3)) o_ptr->art_flags2 |= TR2_SUST_CON;

					/* Mention the item */
					if (cheat_peek) object_mention(o_ptr);

					break;
				}
			}

			/* Randart amulet */
			if (power && (level > 19) && one_in_(150 - level) &&
				!(o_ptr->ident & IDENT_CURSED))
			{
				create_artifact(o_ptr, FALSE);
			}
			break;
		}
	}
}


/*
 * Apply magic to an item known to be "boring"
 *
 * Hack -- note the special code for various items
 */
static void a_m_aux_4(object_type *o_ptr, int level, int power)
{
	object_kind *k_ptr = &k_info[o_ptr->k_idx];

	/* Unused */
	(void)level;
	(void)power;

	/* Apply magic (good or bad) according to type */
	switch (o_ptr->tval)
	{
		case TV_LITE:
		{
			/* Hack -- Torches -- random fuel */
			if (o_ptr->sval == SV_LITE_TORCH)
			{
				o_ptr->xtra3 = randint1(FUEL_TORCH);
			}

			/* Hack -- Lanterns -- random fuel */
			if (o_ptr->sval == SV_LITE_LANTERN)
			{
				o_ptr->xtra3 = randint1(FUEL_LAMP / 2);
			}

			if (o_ptr->sval == SV_LITE_FEANOR)
			{
				create_artifact(o_ptr, FALSE);
			}

			break;
		}

		case TV_WAND:
		case TV_STAFF:
		{
			if ((o_ptr->tval == TV_STAFF) && (o_ptr->sval == SV_STAFF_WISHING))
			{
				o_ptr->pval = 1;
				if (one_in_(3))
				{
					o_ptr->pval++;
					if (one_in_(9)) o_ptr->pval++;
				}
			}
			else
			{
				/* The wand or staff gets a number of initial charges equal
				 * to between 1/2 (+1) and the full object kind's pval. -LM-
				 */
				o_ptr->pval = k_ptr->pval / 2 + randint1((k_ptr->pval + 1) / 2);
			}

			break;
		}

		case TV_ROD:
		{
			/* Transfer the pval. -LM- */
			o_ptr->pval = k_ptr->pval;
			break;
		}

		case TV_FIGURINE:
		{
			int i;

			monster_race *r_ptr;

			/* Pick a random non-unique monster race */
			while (1)
			{
				i = randint1(max_r_idx - 1);

				r_ptr = &r_info[i];

				/* Prefer less out-of-depth monsters */
				if ((object_level < r_ptr->level) && 
					!one_in_(r_ptr->level - object_level)) continue;

				/* Ignore dead monsters */
				if (!r_ptr->rarity) continue;

				/* No uniques */
				if (r_ptr->flags1 & RF1_UNIQUE) continue;

				break;
			}

			o_ptr->pval = i;

			/* Some figurines are cursed */
			if (one_in_(6)) o_ptr->ident |= IDENT_CURSED;

			if (cheat_peek)
			{
#ifdef JP
msg_format("%sの人形, %s",
#else
				msg_format("Figurine of %s, %s",
#endif

							  r_name + r_ptr->name,
							  !(o_ptr->ident & IDENT_CURSED) ? "" : " {cursed}");
			}

			break;
		}

		case TV_CORPSE:
		{
			int i;
			int check;

			u32b match = 0;

			monster_race *r_ptr;

			if (o_ptr->sval == SV_SKELETON)
			{
				match = RF9_DROP_SKELETON;
			}
			else if (o_ptr->sval == SV_CORPSE)
			{
				match = RF9_DROP_CORPSE;
			}

			/* Pick a random non-unique monster race */
			while (1)
			{
				i = randint1(max_r_idx - 1);

				r_ptr = &r_info[i];

				check = (dun_level < r_ptr->level) ? (r_ptr->level - dun_level) : 0;

				/* Ignore dead monsters */
				if (!r_ptr->rarity) continue;

				/* Ignore corpseless monsters */
				if (!(r_ptr->flags9 & match)) continue;

				/* No uniques */
				if (r_ptr->flags1 & RF1_UNIQUE) continue;

				/* Prefer less out-of-depth monsters */
				if (randint0(check)) continue;

				break;
			}

			o_ptr->pval = i;

			if (cheat_peek)
			{
#ifdef JP
msg_format("%sの死体, 深さ +%d",
#else
				msg_format("Corpse of %s, depth +%d",
#endif

							  r_name + r_ptr->name, check - 1);
			}

			break;
		}

		case TV_STATUE:
		{
			int i;

			monster_race *r_ptr;

			/* Pick a random monster race */
			while (1)
			{
				i = randint1(max_r_idx - 1);

				r_ptr = &r_info[i];

				/* Ignore dead monsters */
				if (!r_ptr->rarity) continue;

				break;
			}

			o_ptr->pval = i;

			if (cheat_peek)
			{
#ifdef JP
msg_format("%sの像", r_name + r_ptr->name);
#else
				msg_format("Statue of %s", r_name + r_ptr->name);
#endif

			}

			break;
		}

		case TV_CHEST:
		{
			byte obj_level = get_object_level(o_ptr);

			/* Hack -- skip ruined chests */
			if (obj_level <= 0) break;

			/* Hack -- pick a "difficulty" */
			o_ptr->pval = randint1(obj_level);

			/* Never exceed "difficulty" of 55 to 59 */
			if (o_ptr->pval > 55) o_ptr->pval = 55 + (byte)randint0(5);

			break;
		}
	}
}


/*
 * Complete the "creation" of an object by applying "magic" to the item
 *
 * This includes not only rolling for random bonuses, but also putting the
 * finishing touches on ego-items and artifacts, giving charges to wands and
 * staffs, giving fuel to lites, and placing traps on chests.
 *
 * In particular, note that "Instant Artifacts", if "created" by an external
 * routine, must pass through this function to complete the actual creation.
 *
 * The base "chance" of the item being "good" increases with the "level"
 * parameter, which is usually derived from the dungeon level, being equal
 * to the level plus 10, up to a maximum of 75.  If "good" is true, then
 * the object is guaranteed to be "good".  If an object is "good", then
 * the chance that the object will be "great" (ego-item or artifact), also
 * increases with the "level", being equal to half the level, plus 5, up to
 * a maximum of 20.  If "great" is true, then the object is guaranteed to be
 * "great".  At dungeon level 65 and below, 15/100 objects are "great".
 *
 * If the object is not "good", there is a chance it will be "cursed", and
 * if it is "cursed", there is a chance it will be "broken".  These chances
 * are related to the "good" / "great" chances above.
 *
 * Otherwise "normal" rings and amulets will be "good" half the time and
 * "cursed" half the time, unless the ring/amulet is always good or cursed.
 *
 * If "okay" is true, and the object is going to be "great", then there is
 * a chance that an artifact will be created.  This is true even if both the
 * "good" and "great" arguments are false.  As a total hack, if "great" is
 * true, then the item gets 3 extra "attempts" to become an artifact.
 */
void apply_magic(object_type *o_ptr, int lev, bool okay, bool good, bool great, bool curse)
{

	int i, rolls, f1, f2, power;

	/* Maximum "level" for various things */
	if (lev > MAX_DEPTH - 1) lev = MAX_DEPTH - 1;


	/* Base chance of being "good" */
	f1 = lev + 10;

	/* Maximal chance of being "good" */
	if (f1 > 75) f1 = 75;

	/* Base chance of being "great" */
	f2 = f1 / 2;

	/* Maximal chance of being "great" */
	if (f2 > 20) f2 = 20;


	/* Assume normal */
	power = 0;

	/* Roll for "good" */
	if (good || magik(f1))
	{
		/* Assume "good" */
		power = 1;

		/* Roll for "great" */
		if (great || magik(f2)) power = 2;
	}

	/* Roll for "cursed" */
	else if (magik(f1))
	{
		/* Assume "cursed" */
		power = -1;

		/* Roll for "broken" */
		if (magik(f2)) power = -2;
	}

	/* Apply curse */
	if (curse)
	{
		/* Assume 'cursed' */
		if (power > 0)
		{
			power = 0 - power;
		}
		/* Everything else gets more badly cursed */
		else
		{
			power--;
		}
	}

	/* Assume no rolls */
	rolls = 0;

	/* Get one roll if excellent */
	if (power >= 2) rolls = 1;

	/* Hack -- Get four rolls if forced great */
	if (great) rolls = 4;

	/* Hack -- Get no rolls if not allowed */
	if (!okay || o_ptr->name1) rolls = 0;

	/* Roll for artifacts if allowed */
	for (i = 0; i < rolls; i++)
	{
		/* Roll for an artifact */
		if (make_artifact(o_ptr)) break;
	}


	/* Hack -- analyze artifacts */
	if (o_ptr->name1)
	{
		artifact_type *a_ptr = &a_info[o_ptr->name1];

		/* Hack -- Mark the artifact as "created" */
		a_ptr->cur_num = 1;

		/* Extract the other fields */
		o_ptr->pval = a_ptr->pval;
		/* o_ptr->xtra2 = a_ptr->activate; */
		o_ptr->ac = a_ptr->ac;
		o_ptr->dd = a_ptr->dd;
		o_ptr->ds = a_ptr->ds;
		o_ptr->to_a = a_ptr->to_a;
		o_ptr->to_h = a_ptr->to_h;
		o_ptr->to_d = a_ptr->to_d;
		o_ptr->weight = a_ptr->weight;

		/* Hack -- extract the "broken" flag */
		if (!a_ptr->cost) o_ptr->ident |= (IDENT_BROKEN);

		/* Hack -- extract the "cursed" flag */
		if (a_ptr->flags3 & TR3_CURSED) o_ptr->ident |= (IDENT_CURSED);

		/* Cheat -- peek at the item */
		if (cheat_peek) object_mention(o_ptr);

		/* Done */
		return;
	}


	/* Apply magic */
	switch (o_ptr->tval)
	{
		case TV_DIGGING:
		case TV_HAFTED:
		case TV_POLEARM:
		case TV_SWORD:
		case TV_BOW:
		case TV_SHOT:
		case TV_ARROW:
		case TV_BOLT:
		{
			if (power) a_m_aux_1(o_ptr, lev, power);
			break;
		}

		case TV_DRAG_ARMOR:
		case TV_HARD_ARMOR:
		case TV_SOFT_ARMOR:
		case TV_SHIELD:
		case TV_HELM:
		case TV_CROWN:
		case TV_CLOAK:
		case TV_GLOVES:
		case TV_BOOTS:
		{
			if (power ||
			     ((o_ptr->tval == TV_HARD_ARMOR) && (o_ptr->sval == SV_DRAGON_ARMOR)) ||
			     ((o_ptr->tval == TV_HELM) && (o_ptr->sval == SV_DRAGON_HELM)) ||
			     ((o_ptr->tval == TV_SHIELD) && (o_ptr->sval == SV_DRAGON_SHIELD)) ||
			     ((o_ptr->tval == TV_GLOVES) && (o_ptr->sval == SV_SET_OF_DRAGON_GLOVES)) ||
			     ((o_ptr->tval == TV_BOOTS) && (o_ptr->sval == SV_PAIR_OF_DRAGON_BOOTS)) ||
			     ((o_ptr->tval == TV_CLOAK) && (o_ptr->sval == SV_ELVEN_CLOAK)))
				a_m_aux_2(o_ptr, lev, power);
			break;
		}

		case TV_RING:
		case TV_AMULET:
		{
			if (!power && (randint0(100) < 50)) power = -1;
			a_m_aux_3(o_ptr, lev, power);
			break;
		}

		default:
		{
			a_m_aux_4(o_ptr, lev, power);
			break;
		}
	}

	/* Hack -- analyze ego-items */
	if (o_ptr->name2)
	{
		ego_item_type *e_ptr = &e_info[o_ptr->name2];

		/* Hack -- acquire "broken" flag */
		if (!e_ptr->cost) o_ptr->ident |= (IDENT_BROKEN);

		/* Hack -- acquire "cursed" flag */
		if (e_ptr->flags3 & (TR3_CURSED)) o_ptr->ident |= (IDENT_CURSED);

		/* Paranoia: reset artifact bias */
		artifact_bias = 0;

		if (e_ptr->gen_flags & (TRG_ONE_SUSTAIN)) one_sustain(o_ptr);
		if (e_ptr->gen_flags & (TRG_XTRA_POWER)) one_ability(o_ptr);
		if (e_ptr->gen_flags & (TRG_XTRA_H_RES)) one_high_resistance(o_ptr);
		if (e_ptr->gen_flags & (TRG_XTRA_E_RES)) one_ele_resistance(o_ptr);
		if (e_ptr->gen_flags & (TRG_XTRA_D_RES)) one_dragon_ele_resistance(o_ptr);
		if (e_ptr->gen_flags & (TRG_XTRA_L_RES)) one_lordly_high_resistance(o_ptr);
		if (e_ptr->gen_flags & (TRG_XTRA_RES)) one_resistance(o_ptr);
		if (e_ptr->gen_flags & (TRG_XTRA_PLUS)) one_plus(o_ptr);
		if (e_ptr->gen_flags & (TRG_XTRA_BRAND)) one_brand(o_ptr);
		if (e_ptr->gen_flags & (TRG_XTRA_SLAY)) one_slay(o_ptr);
		if (e_ptr->gen_flags & (TRG_XTRA_ACT)) { give_activation_power(o_ptr); artifact_bias = 0; }

		/* Hack -- apply extra penalties if needed */
		if (cursed_p(o_ptr) || broken_p(o_ptr))
		{
			/* Hack -- obtain bonuses */
			if (e_ptr->max_to_h) o_ptr->to_h -= randint1(e_ptr->max_to_h);
			if (e_ptr->max_to_d) o_ptr->to_d -= randint1(e_ptr->max_to_d);
			if (e_ptr->max_to_a) o_ptr->to_a -= randint1(e_ptr->max_to_a);

			/* Hack -- obtain pval */
			if (e_ptr->max_pval) o_ptr->pval -= randint1(e_ptr->max_pval);
		}

		/* Hack -- apply extra bonuses if needed */
		else
		{
			/* Hack -- obtain bonuses */
			if (e_ptr->max_to_h)
			{
				if (e_ptr->max_to_h > 127)
					o_ptr->to_h -= randint1(256-e_ptr->max_to_h);
				else o_ptr->to_h += randint1(e_ptr->max_to_h);
			}
			if (e_ptr->max_to_d)
			{
				if (e_ptr->max_to_d > 127)
					o_ptr->to_d -= randint1(256-e_ptr->max_to_d);
				else o_ptr->to_d += randint1(e_ptr->max_to_d);
			}
			if (e_ptr->max_to_a)
			{
				if (e_ptr->max_to_a > 127)
					o_ptr->to_a -= randint1(256-e_ptr->max_to_a);
				else o_ptr->to_a += randint1(e_ptr->max_to_a);
			}

			/* Hack -- obtain pval */
			if (e_ptr->max_pval) o_ptr->pval += randint1(e_ptr->max_pval);

			/* Add activation */
			/* if (e_ptr->activate) o_ptr->xtra2 = e_ptr->activate; */
		}

		/* Hack -- extra powers */
		switch (o_ptr->name2)
		{
			/* Weapon (Holy Avenger) */
			case EGO_HA:
			{
				if (o_ptr->art_flags1 & (TR1_BLOWS))
				{
					o_ptr->pval = 1;
					if (one_in_(3) && ((o_ptr->dd * (o_ptr->ds + 1)) < 15)) o_ptr->pval++;
				}
				break;
			}

			/* Weapon (extra attacks) */
			case EGO_ATTACKS:
			{
				o_ptr->pval = randint1(e_ptr->max_pval * lev / 100 + 1);
				if (o_ptr->pval > 3) o_ptr->pval = 3;
				break;
			}

			/* Weapon (Weird) */
			case EGO_WEIRD:
			{
				/* Weird weapons have positive to-dam */
				o_ptr->to_d = 0 - o_ptr->to_d;
				break;
			}
		}

		/* Hack -- occationally created named ego */
		if (!cursed_p(o_ptr) && !broken_p(o_ptr) && one_in_(10 - (lev / 20)))
		{
			create_named_ego(o_ptr);
		}

		/* Cheat -- describe the item */
		if (cheat_peek) object_mention(o_ptr);

		/* Done */
		return;
	}

	/* Examine real objects */
	if (o_ptr->k_idx)
	{
		object_kind *k_ptr = &k_info[o_ptr->k_idx];

		/* Hack -- acquire "broken" flag */
		if (!get_object_cost(o_ptr)) o_ptr->ident |= (IDENT_BROKEN);

		/* Hack -- acquire "cursed" flag */
		if (k_ptr->flags3 & (TR3_CURSED)) o_ptr->ident |= (IDENT_CURSED);
	}
}


/*
 * Hack -- determine if a template is "good"
 */
static bool kind_is_good(int k_idx)
{
	object_kind *k_ptr = &k_info[k_idx];

	/* Analyze the item type */
	switch (k_ptr->tval)
	{
		/* Armor -- Good unless damaged */
		case TV_HARD_ARMOR:
		case TV_SOFT_ARMOR:
		case TV_DRAG_ARMOR:
		case TV_SHIELD:
		case TV_CLOAK:
		case TV_BOOTS:
		case TV_GLOVES:
		case TV_HELM:
		case TV_CROWN:
		{
			if (k_ptr->to_a < 0) return (FALSE);
			return (TRUE);
		}

		/* Weapons -- Good unless damaged */
		case TV_BOW:
		case TV_SWORD:
		case TV_HAFTED:
		case TV_POLEARM:
		case TV_DIGGING:
		{
			if (k_ptr->to_h < 0) return (FALSE);
			if (k_ptr->to_d < 0) return (FALSE);
			return (TRUE);
		}

		/* Ammo -- Arrows/Bolts are good */
		case TV_BOLT:
		case TV_ARROW:
		{
			return (TRUE);
		}

		/* Books -- High level books are good (except Arcane books) */
		case TV_LIFE_BOOK:
		case TV_SORCERY_BOOK:
		{
			if (k_ptr->sval >= SV_BOOK_MIN_GOOD) return (TRUE);
			return (FALSE);
		}

		/* Rings -- Rings of Speed are good */
		case TV_RING:
		{
			if (k_ptr->sval == SV_RING_SPEED) return (TRUE);
			return (FALSE);
		}

		/* Amulets -- Amulets of the Magi and Resistance are good */
		case TV_AMULET:
		{
			if (k_ptr->sval == SV_AMULET_THE_MAGI) return (TRUE);
			if (k_ptr->sval == SV_AMULET_RESISTANCE) return (TRUE);
			if (k_ptr->sval == SV_AMULET_THE_HERO) return (TRUE);
			return (FALSE);
		}
	}

	/* Assume not good */
	return (FALSE);
}


/*
 * Attempt to make an object (normal or good/great)
 *
 * This routine plays nasty games to generate the "special artifacts".
 *
 * This routine uses "object_level" for the "generation level".
 *
 * We assume that the given object has been "wiped".
 */
bool make_object(object_type *j_ptr, bool good, bool great)
{
	int prob, base;
	byte obj_level;


	/* Chance of "special object" */
	prob = (good ? 10 : 1000);

	/* Base level for the object */
	base = (good ? (object_level + 10) : object_level);


	/* Generate a special object, or a normal object */
	if ((randint0(prob) != 0) || !make_artifact_special(j_ptr))
	{
		int k_idx;

		/* Good objects */
		if (good)
		{
			/* Activate restriction */
			get_obj_num_hook = kind_is_good;

			/* Prepare allocation table */
			get_obj_num_prep();
		}

		/* Pick a random object */
		k_idx = get_obj_num(base);

		/* Good or Themed objects */
		if (get_obj_num_hook)
		{
			/* Clear restriction */
			get_obj_num_hook = NULL;

			/* Prepare allocation table */
			get_obj_num_prep();
		}

		/* Handle failure */
		if (!k_idx) return (FALSE);

		/* Prepare the object */
		object_prep(j_ptr, k_idx);
	}

	/* Apply magic (allow artifacts) */
	apply_magic(j_ptr, object_level, TRUE, good, great, FALSE);

	/* Hack -- generate multiple spikes/missiles */
	switch (j_ptr->tval)
	{
		case TV_SPIKE:
		case TV_SHOT:
		case TV_ARROW:
		case TV_BOLT:
		{
			/* XTRA HACK */
			if (!j_ptr->name1)  j_ptr->number = (byte)damroll(6, 7);
		}
	}

	obj_level = get_object_level(j_ptr);

	/* Notice "okay" out-of-depth objects */
	if (!cursed_p(j_ptr) && !broken_p(j_ptr) &&
	    (obj_level > dun_level))
	{
		/* Cheat -- peek at items */
		if (cheat_peek) object_mention(j_ptr);
	}

	/* Success */
	return (TRUE);
}


/*
 * Attempt to place an object (normal or good/great) at the given location.
 *
 * This routine plays nasty games to generate the "special artifacts".
 *
 * This routine uses "object_level" for the "generation level".
 *
 * This routine requires a clean floor grid destination.
 */
void place_object(int y, int x, bool good, bool great)
{
	s16b o_idx;

	cave_type *c_ptr;

	object_type forge;
	object_type *q_ptr;


	/* Paranoia -- check bounds */
	if (!in_bounds(y, x)) return;

	/* Require clean floor space */
	if (!cave_gen_bold(y, x)) return;


	/* Get local object */
	q_ptr = &forge;

	/* Wipe the object */
	object_wipe(q_ptr);

	/* Make an object (if possible) */
	if (!make_object(q_ptr, good, great)) return;


	/* Make an object */
	o_idx = o_pop();

	/* Success */
	if (o_idx)
	{
		object_type *o_ptr;

		/* Acquire object */
		o_ptr = &o_list[o_idx];

		/* Structure Copy */
		object_copy(o_ptr, q_ptr);

		/* Location */
		o_ptr->iy = y;
		o_ptr->ix = x;

		/* Acquire grid */
		c_ptr = &cave[y][x];

		/* Build a stack */
		o_ptr->next_o_idx = c_ptr->o_idx;

		/* Place the object */
		c_ptr->o_idx = o_idx;

		/* Notice */
		note_spot(y, x);

		/* Redraw */
		lite_spot(y, x);
	}
	else
	{
		/* Hack -- Preserve artifacts */
		if (q_ptr->name1)
		{
			a_info[q_ptr->name1].cur_num = 0;
		}
	}
}


/*
 * Make a treasure object
 *
 * The location must be a legal, clean, floor grid.
 */
bool make_gold(object_type *j_ptr)
{
	int i;

	s32b base;


	/* Hack -- Pick a Treasure variety */
	i = ((randint1(object_level + 2) + 2) / 2) - 1;

	/* Apply "extra" magic */
	if (one_in_(GREAT_OBJ))
	{
		i += randint1(object_level + 1);
	}

	/* Hack -- Creeping Coins only generate "themselves" */
	if (coin_type) i = coin_type;

	/* Do not create "illegal" Treasure Types */
	if (i >= MAX_GOLD) i = MAX_GOLD - 1;

	/* Prepare a gold object */
	object_prep(j_ptr, OBJ_GOLD_LIST + i);

	/* Hack -- Base coin cost */
	base = k_info[OBJ_GOLD_LIST+i].cost;

	/* Determine how much the treasure is "worth" */
	j_ptr->pval = (base + (8L * randint1(base)) + randint1(8));

	/* Success */
	return (TRUE);
}


/*
 * Places a treasure (Gold or Gems) at given location
 *
 * The location must be a legal, clean, floor grid.
 */
void place_gold(int y, int x)
{
	s16b o_idx;

	cave_type *c_ptr;

	object_type forge;
	object_type *q_ptr;


	/* Paranoia -- check bounds */
	if (!in_bounds(y, x)) return;

	/* Require clean floor space */
	if (!cave_clean_bold(y, x)) return;


	/* Get local object */
	q_ptr = &forge;

	/* Wipe the object */
	object_wipe(q_ptr);

	/* Make some gold */
	if (!make_gold(q_ptr)) return;


	/* Make an object */
	o_idx = o_pop();

	/* Success */
	if (o_idx)
	{
		object_type *o_ptr;

		/* Acquire object */
		o_ptr = &o_list[o_idx];

		/* Copy the object */
		object_copy(o_ptr, q_ptr);

		/* Save location */
		o_ptr->iy = y;
		o_ptr->ix = x;

		/* Acquire grid */
		c_ptr = &cave[y][x];

		/* Build a stack */
		o_ptr->next_o_idx = c_ptr->o_idx;

		/* Place the object */
		c_ptr->o_idx = o_idx;

		/* Notice */
		note_spot(y, x);

		/* Redraw */
		lite_spot(y, x);
	}
}


/*
 * Let an object fall to the ground at or near a location.
 *
 * The initial location is assumed to be "in_bounds()".
 *
 * This function takes a parameter "chance".  This is the percentage
 * chance that the item will "disappear" instead of drop.  If the object
 * has been thrown, then this is the chance of disappearance on contact.
 *
 * Hack -- this function uses "chance" to determine if it should produce
 * some form of "description" of the drop event (under the player).
 *
 * We check several locations to see if we can find a location at which
 * the object can combine, stack, or be placed.  Artifacts will try very
 * hard to be placed, including "teleporting" to a useful grid if needed.
 */
s16b drop_near(object_type *j_ptr, int chance, int y, int x)
{
	int i, k, d, s;

	int bs, bn;
	int by, bx;
	int dy, dx;
	int ty, tx;

	s16b o_idx = 0;

	s16b this_o_idx, next_o_idx;

	cave_type *c_ptr;

	char o_name[MAX_NLEN];

	bool flag = FALSE;
	bool done = FALSE;

#ifndef JP
	/* Extract plural */
	bool plural = (j_ptr->number != 1);
#endif

	/* Describe object */
	object_desc(o_name, j_ptr, OD_OMIT_PREFIX | OD_NAME_ONLY);


	/* Handle normal "breakage" */
	if (!(j_ptr->art_name || artifact_p(j_ptr)) && (randint0(100) < chance))
	{
		/* Message */
#ifdef JP
		msg_format("%sは消えた。", o_name);
#else
		msg_format("The %s disappear%s.",
			   o_name, (plural ? "" : "s"));
#endif


		/* Debug */
#ifdef JP
		if (wizard) msg_print("(破損)");
#else
		if (wizard) msg_print("(breakage)");
#endif


		/* Failure */
		return (0);
	}


	/* Score */
	bs = -1;

	/* Picker */
	bn = 0;

	/* Default */
	by = y;
	bx = x;

	/* Scan local grids */
	for (dy = -3; dy <= 3; dy++)
	{
		/* Scan local grids */
		for (dx = -3; dx <= 3; dx++)
		{
			bool comb = FALSE;

			/* Calculate actual distance */
			d = (dy * dy) + (dx * dx);

			/* Ignore distant grids */
			if (d > 10) continue;

			/* Location */
			ty = y + dy;
			tx = x + dx;

			/* Skip illegal grids */
			if (!in_bounds(ty, tx)) continue;

			/* Require line of sight */
			if (!los(y, x, ty, tx)) continue;

			/* Obtain grid */
			c_ptr = &cave[ty][tx];

			/* Require floor space */
			if ((c_ptr->feat != FEAT_FLOOR) &&
			    (c_ptr->feat != FEAT_SHAL_WATER) &&
			    (c_ptr->feat != FEAT_GRASS) &&
			    (c_ptr->feat != FEAT_DIRT) &&
			    (c_ptr->feat != FEAT_SHAL_LAVA) &&
				(c_ptr->feat != FEAT_TREES)) continue;

			/* No objects */
			k = 0;

			/* Scan objects in that grid */
			for (this_o_idx = c_ptr->o_idx; this_o_idx; this_o_idx = next_o_idx)
			{
				object_type *o_ptr;

				/* Acquire object */
				o_ptr = &o_list[this_o_idx];

				/* Acquire next object */
				next_o_idx = o_ptr->next_o_idx;

				/* Check for possible combination */
				if (object_similar(o_ptr, j_ptr)) comb = TRUE;

				/* Count objects */
				k++;
			}

			/* Add new object */
			if (!comb) k++;

			/* Paranoia */
			if (k > 99) continue;

			/* Calculate score */
			s = 1000 - (d + k * 5);

			/* Skip bad values */
			if (s < bs) continue;

			/* New best value */
			if (s > bs) bn = 0;

			/* Apply the randomizer to equivalent values */
			if ((++bn >= 2) && (randint0(bn) != 0)) continue;

			/* Keep score */
			bs = s;

			/* Track it */
			by = ty;
			bx = tx;

			/* Okay */
			flag = TRUE;
		}
	}


	/* Handle lack of space */
	if (!flag && !(artifact_p(j_ptr) || j_ptr->art_name))
	{
		/* Message */
#ifdef JP
		msg_format("%sは消えた。", o_name);
#else
		msg_format("The %s disappear%s.",
			   o_name, (plural ? "" : "s"));
#endif


		/* Debug */
#ifdef JP
if (wizard) msg_print("(床スペースがない)");
#else
		if (wizard) msg_print("(no floor space)");
#endif


		/* Failure */
		return (0);
	}


	/* Find a grid */
	for (i = 0; !flag; i++)
	{
		/* Bounce around */
		if (i < 1000)
		{
			ty = rand_spread(by, 1);
			tx = rand_spread(bx, 1);
		}

		/* Random locations */
		else
		{
			ty = randint0(cur_hgt);
			tx = randint0(cur_wid);
		}

		/* Grid */
		c_ptr = &cave[ty][tx];

		/* Require floor space (or shallow terrain) -KMW- */
		if ((c_ptr->feat != FEAT_FLOOR) &&
		    (c_ptr->feat != FEAT_SHAL_WATER) &&
		    (c_ptr->feat != FEAT_GRASS) &&
		    (c_ptr->feat != FEAT_DIRT) &&
		    (c_ptr->feat != FEAT_SHAL_LAVA)) continue;

		/* Bounce to that location */
		by = ty;
		bx = tx;

		/* Require floor space */
		if (!cave_clean_bold(by, bx)) continue;

		/* Okay */
		flag = TRUE;
	}

	/* Grid */
	c_ptr = &cave[by][bx];

	/* Hack - artifacts will not be affected by terrain */
	if (!(artifact_p(j_ptr) || j_ptr->art_name))
	{
		/* Check to see if the object will burn on contact with lava. */
		if ((c_ptr->feat == FEAT_SHAL_LAVA) &&
		    ((j_ptr->tval == TV_STAFF) ||
		     (j_ptr->tval == TV_SCROLL) ||
		     (j_ptr->tval == TV_WAND)))
		{
			/* only display messages if player throws */
			if (!chance)
			{
				/* Message */
#ifdef JP
				msg_format("%sが熔岩の中で燃えてしまった。",o_name);
#else
				msg_format("The %s%s burns in the lava.",
					o_name, (plural ? "" : "s"));
#endif
				sound(SOUND_BR_FIRE); /* (Sound substitute) No sound for fire */
			}

			/* Debug */
#ifdef JP
			if (wizard) msg_print("(熔岩との接触)");
#else
			if (wizard) msg_print("(contact with lava)");
#endif

			/* Failure */
			return (0);
		}

		/* Check to see if the object will disappear in water. */
		if ((c_ptr->feat == FEAT_SHAL_WATER) && (j_ptr->tval == TV_RING))
		{
			/* only display messages if player throws */
			if (!chance)
			{
				/* Message */
#ifdef JP
 msg_format("%sが消えてしまった。",o_name);
#else
				msg_format("The %s disappear%s.",
					o_name, (plural ? "" : "s"));
#endif

			}

			/* Debug */
#ifdef JP
if (wizard) msg_print("(水との接触)");
#else
			if (wizard) msg_print("(contact with water)");
#endif


			/* Failure */
			return (0);
		}
	}

	/* Scan objects in that grid for combination */
	for (this_o_idx = c_ptr->o_idx; this_o_idx; this_o_idx = next_o_idx)
	{
		object_type *o_ptr;

		/* Acquire object */
		o_ptr = &o_list[this_o_idx];

		/* Acquire next object */
		next_o_idx = o_ptr->next_o_idx;

		/* Check for combination */
		if (object_similar(o_ptr, j_ptr))
		{
			/* Combine the items */
			object_absorb(o_ptr, j_ptr);
			
			/* Point to the stack */
			o_idx = this_o_idx;

			/* Success */
			done = TRUE;

			/* Done */
			break;
		}
	}

	/* Get new object */
	if (!done) o_idx = o_pop();

	/* Failure */
	if (!done && !o_idx)
	{
		/* Message */
#ifdef JP
		msg_format("%sは消えた。", o_name);
#else
		msg_format("The %s disappear%s.",
			   o_name, (plural ? "" : "s"));
#endif


		/* Debug */
#ifdef JP
if (wizard) msg_print("(アイテムが多過ぎる)");
#else
		if (wizard) msg_print("(too many objects)");
#endif


		/* Hack -- Preserve artifacts */
		if (j_ptr->name1)
		{
			a_info[j_ptr->name1].cur_num = 0;
		}

		/* Failure */
		return (0);
	}

	/* Stack */
	if (!done)
	{
		/* Structure copy */
		object_copy(&o_list[o_idx], j_ptr);

		/* Access new object */
		j_ptr = &o_list[o_idx];

		/* Locate */
		j_ptr->iy = by;
		j_ptr->ix = bx;

		/* No monster */
		j_ptr->held_m_idx = 0;

		/* Build a stack */
		j_ptr->next_o_idx = c_ptr->o_idx;

		/* Place the object */
		c_ptr->o_idx = o_idx;

		/* Success */
	}

	/* Note the spot */
	note_spot(by, bx);

	/* Draw the spot */
	lite_spot(by, bx);

	/* Sound */
	sound(SOUND_DROP);

	/* Mega-Hack -- no message if "dropped" by player */
	/* Message when an object falls under the player */
	if (chance && (by == py) && (bx == px))
	{
#ifdef JP
msg_print("何かが足下に転がってきた。");
#else
		msg_print("You feel something roll beneath your feet.");
#endif

	}

	/* XXX XXX XXX */

	/* Result */
	return (o_idx);
}


/*
 * Scatter some "great" objects near the player
 */
void acquirement(int y1, int x1, int num, bool great, bool known)
{
	object_type *i_ptr;
	object_type object_type_body;

	/* Acquirement */
	while (num--)
	{
		/* Get local object */
		i_ptr = &object_type_body;

		/* Wipe the object */
		object_wipe(i_ptr);

		/* Make a good (or great) object (if possible) */
		if (!make_object(i_ptr, TRUE, great)) continue;

		if (known)
		{
			object_aware(i_ptr);
			object_known(i_ptr);
		}

		/* Drop the object */
		(void)drop_near(i_ptr, -1, y1, x1);
	}
}


#define MAX_TRAPS		17

static int trap_num[MAX_TRAPS] =
{
	FEAT_TRAP_TRAPDOOR,
	FEAT_TRAP_PIT,
	FEAT_TRAP_SPIKED_PIT,
	FEAT_TRAP_POISON_PIT,
	FEAT_TRAP_TY_CURSE,
	FEAT_TRAP_TELEPORT,
	FEAT_TRAP_FIRE,
	FEAT_TRAP_ACID,
	FEAT_TRAP_SLOW,
	FEAT_TRAP_LOSE_STR,
	FEAT_TRAP_LOSE_DEX,
	FEAT_TRAP_LOSE_CON,
	FEAT_TRAP_BLIND,
	FEAT_TRAP_CONFUSE,
	FEAT_TRAP_POISON,
	FEAT_TRAP_SLEEP,
	FEAT_TRAP_TRAPS,
};


/*
 * Hack -- instantiate a trap
 *
 * XXX XXX XXX This routine should be redone to reflect trap "level".
 * That is, it does not make sense to have spiked pits at 50 feet.
 * Actually, it is not this routine, but the "trap instantiation"
 * code, which should also check for "trap doors" on quest levels.
 */
void pick_trap(int y, int x)
{
	int feat;

	cave_type *c_ptr = &cave[y][x];

	/* Paranoia */
	if (c_ptr->feat != FEAT_INVIS) return;

	/* Pick a trap */
	while (1)
	{
		/* Hack -- pick a trap */
		feat = trap_num[randint0(MAX_TRAPS)];

		/* Accept non-trapdoors */
		if (feat != FEAT_TRAP_TRAPDOOR) break;

		/* Hack -- no trap doors on special levels */
		if (p_ptr->inside_arena || quest_number(dun_level)) continue;

		/* Hack -- no trap doors on the deepest level */
		if (dun_level >= MAX_DEPTH-1) continue;

		break;
	}

	/* Activate the trap */
	cave_set_feat(y, x, feat);
}


/*
 * Places a random trap at the given location.
 *
 * The location must be a legal, naked, floor grid.
 *
 * Note that all traps start out as "invisible" and "untyped", and then
 * when they are "discovered" (by detecting them or setting them off),
 * the trap is "instantiated" as a visible, "typed", trap.
 */
void place_trap(int y, int x)
{
	/* Paranoia -- verify location */
	if (!in_bounds(y, x)) return;

	/* Require empty, clean, floor grid */
	if (!cave_naked_bold(y, x)) return;

	/* Place an invisible trap */
	cave_set_feat(y, x, FEAT_INVIS);
}


/*
 * Describe the charges on an item in the inventory.
 */
void inven_item_charges(int item)
{
	object_type *o_ptr = &inventory[item];

	/* Require staff/wand */
	if ((o_ptr->tval != TV_STAFF) && (o_ptr->tval != TV_WAND)) return;

	/* Require known item */
	if (!object_known_p(o_ptr)) return;

#ifdef JP
	if (o_ptr->pval <= 0)
	{
		msg_print("もう魔力が残っていない。");
	}
	else
	{
		msg_format("あと %d 回分の魔力が残っている。", o_ptr->pval);
	}
#else
	/* Multiple charges */
	if (o_ptr->pval != 1)
	{
		/* Print a message */
		msg_format("You have %d charges remaining.", o_ptr->pval);
	}

	/* Single charge */
	else
	{
		/* Print a message */
		msg_format("You have %d charge remaining.", o_ptr->pval);
	}
#endif

}


/*
 * Describe an item in the inventory.
 */
void inven_item_describe(int item)
{
	object_type *o_ptr = &inventory[item];
	char        o_name[MAX_NLEN];

	/* Get a description */
	object_desc(o_name, o_ptr, 0);

	/* Print a message */
#ifdef JP
	/* "no more" の場合はこちらで表示する */
	if (o_ptr->number <= 0)
	{
		/*FIRST*//*ここはもう通らないかも*/
		msg_format("もう%sを持っていない。", o_name);
	}
	else
	{
		msg_format("まだ %sを持っている。", o_name);
	}
#else
	msg_format("You have %s.", o_name);
#endif

}


/*
 * Increase the "number" of an item in the inventory
 */
void inven_item_increase(int item, int num)
{
	object_type *o_ptr = &inventory[item];

	/* Apply */
	num += o_ptr->number;

	/* Bounds check */
	if (num > 255) num = 255;
	else if (num < 0) num = 0;

	/* Un-apply */
	num -= o_ptr->number;

	/* Change the number and weight */
	if (num)
	{
		/* Add the number */
		o_ptr->number += num;

		/* Add the weight */
		p_ptr->total_weight += (num * o_ptr->weight);

		/* Recalculate bonuses */
		p_ptr->update |= (PU_BONUS);

		/* Recalculate mana XXX */
		p_ptr->update |= (PU_MANA);

		/* Combine the pack */
		p_ptr->notice |= (PN_COMBINE);

		/* Window stuff */
		p_ptr->window |= (PW_INVEN | PW_EQUIP);
	}
}


/*
 * Erase an inventory slot if it has no more items
 */
void inven_item_optimize(int item)
{
	object_type *o_ptr = &inventory[item];

	/* Only optimize real items */
	if (!o_ptr->k_idx) return;

	/* Only optimize empty items */
	if (o_ptr->number) return;

	/* The item is in the pack */
	if (item < INVEN_WIELD)
	{
		int i;

		/* One less item */
		inven_cnt--;

		/* Slide everything down */
		for (i = item; i < INVEN_PACK; i++)
		{
			/* Structure copy */
			inventory[i] = inventory[i+1];
		}

		/* Erase the "final" slot */
		object_wipe(&inventory[i]);

		/* Window stuff */
		p_ptr->window |= (PW_INVEN);
	}

	/* The item is being wielded */
	else
	{
		/* One less item */
		equip_cnt--;

		/* Erase the empty slot */
		object_wipe(&inventory[item]);

		/* Recalculate bonuses */
		p_ptr->update |= (PU_BONUS);

		/* Recalculate torch */
		p_ptr->update |= (PU_TORCH);

		/* Recalculate mana XXX */
		p_ptr->update |= (PU_MANA);

		/* Window stuff */
		p_ptr->window |= (PW_EQUIP);
	}

	/* Window stuff */
	p_ptr->window |= (PW_SPELL);
}


/*
 * Describe the charges on an item on the floor.
 */
void floor_item_charges(int item)
{
	object_type *o_ptr = &o_list[item];

	/* Require staff/wand */
	if ((o_ptr->tval != TV_STAFF) && (o_ptr->tval != TV_WAND)) return;

	/* Require known item */
	if (!object_known_p(o_ptr)) return;

#ifdef JP
	if (o_ptr->pval <= 0)
	{
		msg_print("この床上のアイテムは、もう魔力が残っていない。");
	}
	else
	{
		msg_format("この床上のアイテムは、あと %d 回分の魔力が残っている。", o_ptr->pval);
	}
#else
	/* Multiple charges */
	if (o_ptr->pval != 1)
	{
		/* Print a message */
		msg_format("There are %d charges remaining.", o_ptr->pval);
	}

	/* Single charge */
	else
	{
		/* Print a message */
		msg_format("There is %d charge remaining.", o_ptr->pval);
	}
#endif

}


/*
 * Describe an item in the inventory.
 */
void floor_item_describe(int item)
{
	object_type *o_ptr = &o_list[item];
	char        o_name[MAX_NLEN];

	/* Get a description */
	object_desc(o_name, o_ptr, 0);

	/* Print a message */
#ifdef JP
	/* "no more" の場合はこちらで表示を分ける */
	if (o_ptr->number <= 0)
	{
		msg_format("床上には、もう%sはない。", o_name);
	}
	else
	{
		msg_format("床上には、まだ %sがある。", o_name);
	}
#else
	msg_format("You see %s.", o_name);
#endif

}


/*
 * Increase the "number" of an item on the floor
 */
void floor_item_increase(int item, int num)
{
	object_type *o_ptr = &o_list[item];

	/* Apply */
	num += o_ptr->number;

	/* Bounds check */
	if (num > 255) num = 255;
	else if (num < 0) num = 0;

	/* Un-apply */
	num -= o_ptr->number;

	/* Change the number */
	o_ptr->number += num;
}


/*
 * Optimize an item on the floor (destroy "empty" items)
 */
void floor_item_optimize(int item)
{
	object_type *o_ptr = &o_list[item];

	/* Paranoia -- be sure it exists */
	if (!o_ptr->k_idx) return;

	/* Only optimize empty items */
	if (o_ptr->number) return;

	/* Delete the object */
	delete_object_idx(item);
}


/*
 * Check if we have space for an item in the pack without overflow
 */
bool inven_carry_okay(const object_type *o_ptr)
{
	int j;

	/* Empty slot? */
	if (inven_cnt < INVEN_PACK) return (TRUE);

	/* Similar slot? */
	for (j = 0; j < INVEN_PACK; j++)
	{
		object_type *j_ptr = &inventory[j];

		/* Skip non-objects */
		if (!j_ptr->k_idx) continue;

		/* Check if the two items can be combined */
		if (object_similar(j_ptr, o_ptr)) return (TRUE);
	}

	/* Nope */
	return (FALSE);
}


bool object_sort_comp(object_type *o_ptr, s32b o_value, object_type *j_ptr)
{
	int o_type, j_type;

	/* Use empty slots */
	if (!j_ptr->k_idx) return TRUE;

	/* Hack -- readable books always come first */
	if ((o_ptr->tval == REALM1_BOOK) &&
	    (j_ptr->tval != REALM1_BOOK)) return TRUE;
	if ((j_ptr->tval == REALM1_BOOK) &&
	    (o_ptr->tval != REALM1_BOOK)) return FALSE;

#if 0
	if ((o_ptr->tval == REALM2_BOOK) &&
	    (j_ptr->tval != REALM2_BOOK)) return TRUE;
	if ((j_ptr->tval == REALM2_BOOK) &&
	    (o_ptr->tval != REALM2_BOOK)) return FALSE;
#endif

	/* Objects sort by decreasing type */
	if (o_ptr->tval > j_ptr->tval) return TRUE;
	if (o_ptr->tval < j_ptr->tval) return FALSE;

	/* Non-aware (flavored) items always come last */
	/* Can happen in the home */
	if (!object_aware_p(o_ptr)) return FALSE;
	if (!object_aware_p(j_ptr)) return TRUE;

	/* Objects sort by increasing sval */
	if (o_ptr->sval < j_ptr->sval) return TRUE;
	if (o_ptr->sval > j_ptr->sval) return FALSE;

	/* Unidentified objects always come last */
	/* Objects in the home can be unknown */
	if (!object_known_p(o_ptr)) return FALSE;
	if (!object_known_p(j_ptr)) return TRUE;

	/* Fixed artifacts, random artifacts and ego items */
	if (artifact_p(o_ptr)) o_type = 3;
	else if (o_ptr->art_name) o_type = 2;
	else if (ego_item_p(o_ptr)) o_type = 1;
	else o_type = 0;

	if (artifact_p(j_ptr)) j_type = 3;
	else if (j_ptr->art_name) j_type = 2;
	else if (ego_item_p(j_ptr)) j_type = 1;
	else j_type = 0;

	if (o_type < j_type) return TRUE;
	if (o_type > j_type) return FALSE;

	switch (o_ptr->tval)
	{
	case TV_FIGURINE:
	case TV_STATUE:
	case TV_CORPSE:
		if (r_info[o_ptr->pval].level < r_info[j_ptr->pval].level) return TRUE;
		if ((r_info[o_ptr->pval].level == r_info[j_ptr->pval].level) && (o_ptr->pval < j_ptr->pval)) return TRUE;
		return FALSE;

	/* Shots sort by slaying bonus */
	case TV_SHOT:
	case TV_ARROW:
	case TV_BOLT:
		{
			int t1 = o_ptr->to_h + o_ptr->to_d;
			int t2 = j_ptr->to_h + j_ptr->to_d;

			if (t1 < t2) return TRUE;
			if (t1 > t2) return FALSE;
		}
		break;

	/* Staffs sort by remaining charges */
	case TV_STAFF:
		if (o_ptr->pval > j_ptr->pval) return TRUE;
		if (o_ptr->pval < j_ptr->pval) return FALSE;
		break;

	/* Hack:  otherwise identical rods sort by
	increasing recharge time --dsb */
	case TV_ROD:
		if (o_ptr->pval < j_ptr->pval) return TRUE;
		if (o_ptr->pval > j_ptr->pval) return FALSE;
		break;
	}

	/* Objects sort by decreasing value */
	return o_value > object_value(j_ptr);
}


/*
 * Add an item to the players inventory, and return the slot used.
 *
 * If the new item can combine with an existing item in the inventory,
 * it will do so, using "object_similar()" and "object_absorb()", else,
 * the item will be placed into the "proper" location in the inventory.
 *
 * This function can be used to "over-fill" the player's pack, but only
 * once, and such an action must trigger the "overflow" code immediately.
 * Note that when the pack is being "over-filled", the new item must be
 * placed into the "overflow" slot, and the "overflow" must take place
 * before the pack is reordered, but (optionally) after the pack is
 * combined.  This may be tricky.  See "dungeon.c" for info.
 *
 * Note that this code must remove any location/stack information
 * from the object once it is placed into the inventory.
 */
s16b inven_carry(object_type *o_ptr)
{
	int i, j, k;
	int n = -1;

	object_type *j_ptr;


	/* Check for combining */
	for (j = 0; j < INVEN_PACK; j++)
	{
		j_ptr = &inventory[j];

		/* Skip non-objects */
		if (!j_ptr->k_idx) continue;

		/* Hack -- track last item */
		n = j;

		/* Check if the two items can be combined */
		if (object_similar(j_ptr, o_ptr))
		{
			/* Combine the items */
			object_absorb(j_ptr, o_ptr);

			/* Increase the weight */
			p_ptr->total_weight += (o_ptr->number * o_ptr->weight);

			/* Recalculate bonuses */
			p_ptr->update |= (PU_BONUS);

			/* Window stuff */
			p_ptr->window |= (PW_INVEN);

			/* Success */
			return (j);
		}
	}


	/* Paranoia */
	if (inven_cnt > INVEN_PACK) return (-1);

	/* Find an empty slot */
	for (j = 0; j <= INVEN_PACK; j++)
	{
		j_ptr = &inventory[j];

		/* Use it if found */
		if (!j_ptr->k_idx) break;
	}

	/* Use that slot */
	i = j;


	/* Reorder the pack */
	if (i < INVEN_PACK)
	{
		/* Get the "value" of the item */
		s32b o_value = object_value(o_ptr);

		/* Scan every occupied slot */
		for (j = 0; j < INVEN_PACK; j++)
		{
			if (object_sort_comp(o_ptr, o_value, &inventory[j])) break;
		}

		/* Use that slot */
		i = j;

		/* Slide objects */
		for (k = n; k >= i; k--)
		{
			/* Hack -- Slide the item */
			object_copy(&inventory[k+1], &inventory[k]);
		}

		/* Wipe the empty slot */
		object_wipe(&inventory[i]);
	}


	/* Copy the item */
	object_copy(&inventory[i], o_ptr);

	/* Access new object */
	j_ptr = &inventory[i];

	/* Forget stack */
	j_ptr->next_o_idx = 0;

	/* Forget monster */
	j_ptr->held_m_idx = 0;

	/* Forget location */
	j_ptr->iy = j_ptr->ix = 0;

	/* Player touches it, and no longer marked */
	j_ptr->marked = OM_TOUCHED;

	/* Increase the weight */
	p_ptr->total_weight += (j_ptr->number * j_ptr->weight);

	/* Count the items */
	inven_cnt++;

	/* Recalculate bonuses */
	p_ptr->update |= (PU_BONUS);

	/* Combine and Reorder pack */
	p_ptr->notice |= (PN_COMBINE | PN_REORDER);

	/* Window stuff */
	p_ptr->window |= (PW_INVEN);

	/* Return the slot */
	return (i);
}


/*
 * Take off (some of) a non-cursed equipment item
 *
 * Note that only one item at a time can be wielded per slot.
 *
 * Note that taking off an item when "full" may cause that item
 * to fall to the ground.
 *
 * Return the inventory slot into which the item is placed.
 */
s16b inven_takeoff(int item, int amt)
{
	int slot;

	object_type forge;
	object_type *q_ptr;

	object_type *o_ptr;

	cptr act;

	char o_name[MAX_NLEN];


	/* Get the item to take off */
	o_ptr = &inventory[item];

	/* Paranoia */
	if (amt <= 0) return (-1);

	/* Verify */
	if (amt > o_ptr->number) amt = o_ptr->number;

	/* Get local object */
	q_ptr = &forge;

	/* Obtain a local object */
	object_copy(q_ptr, o_ptr);

	/* Modify quantity */
	q_ptr->number = amt;

	/* Describe the object */
	object_desc(o_name, q_ptr, 0);

	/* Took off weapon */
	if (item == INVEN_WIELD)
	{
#ifdef JP
		act = "を装備からはずした";
#else
		act = "You were wielding";
#endif
	}

	/* Took off bow */
	else if (item == INVEN_BOW)
	{
#ifdef JP
		act = "を装備からはずした";
#else
		act = "You were holding";
#endif
	}

	/* Took off light */
	else if (item == INVEN_LITE)
	{
#ifdef JP
		act = "を光源からはずした";
#else
		act = "You were holding";
#endif
	}

	/* Took off something */
	else
	{
#ifdef JP
		act = "を装備からはずした";
#else
		act = "You were wearing";
#endif
	}

	/* Modify, Optimize */
	inven_item_increase(item, -amt);
	inven_item_optimize(item);

	/* Carry the object */
	slot = inven_carry(q_ptr);

	/* Message */
#ifdef JP
	msg_format("%s(%c)%s。", o_name, index_to_label(slot), act);
#else
	msg_format("%s %s (%c).", act, o_name, index_to_label(slot));
#endif

	/* Return slot */
	return (slot);
}


/*
 * Drop (some of) a non-cursed inventory/equipment item
 *
 * The object will be dropped "near" the current location
 */
void inven_drop(int item, int amt)
{
	object_type forge;
	object_type *q_ptr;

	object_type *o_ptr;

	char o_name[MAX_NLEN];
	bool is_wield = FALSE;

	/* Access original object */
	o_ptr = &inventory[item];

	/* Error check */
	if (amt <= 0) return;

	/* Not too many */
	if (amt > o_ptr->number) amt = o_ptr->number;


	/* Take off equipment */
	if (item >= INVEN_WIELD)
	{
		/* is main weapon dropped when two-handed */
		if (item == INVEN_WIELD) is_wield = TRUE;

		/* Take off first */
		item = inven_takeoff(item, amt);

		/* Access original object */
		o_ptr = &inventory[item];
	}


	/* Get local object */
	q_ptr = &forge;

	/* Obtain local object */
	object_copy(q_ptr, o_ptr);

	/* Distribute charges of wands or rods */
	distribute_charges(o_ptr, q_ptr, amt);

	/* Modify quantity */
	q_ptr->number = amt;

	/* Describe local object */
	object_desc(o_name, q_ptr, 0);

	/* Message */
#ifdef JP
msg_format("%s(%c)を落とした。", o_name, index_to_label(item));
#else
	msg_format("You drop %s (%c).", o_name, index_to_label(item));
#endif


	/* Drop it near the player */
	(void)drop_near(q_ptr, 0, py, px);

	/* Modify, Describe, Optimize */
	inven_item_increase(item, -amt);
	inven_item_describe(item);
	inven_item_optimize(item);

	/* Swap hands wielding sub weapon */
	if (is_wield && is_two_handed())
	{
		o_ptr = &inventory[INVEN_ARM];
		q_ptr = &inventory[INVEN_WIELD];

		object_copy(q_ptr, o_ptr);
		object_wipe(o_ptr);

		/* Describe local object */
		object_desc(o_name, q_ptr, 0);

#ifdef JP
		msg_format("%sを右手で構えた。", o_name);
#else
		msg_format("You are weilding %s in your right hand.", o_name);
#endif
	}
}


/*
 * Combine items in the pack
 *
 * Note special handling of the "overflow" slot
 */
void combine_pack(void)
{
	int             i, j, k;
	object_type     *o_ptr;
	object_type     *j_ptr;
	bool            flag = FALSE, combined;

	do
	{
		combined = FALSE;

		/* Combine the pack (backwards) */
		for (i = INVEN_PACK; i > 0; i--)
		{
			/* Get the item */
			o_ptr = &inventory[i];

			/* Skip empty items */
			if (!o_ptr->k_idx) continue;

			/* Scan the items above that item */
			for (j = 0; j < i; j++)
			{
				int max_num;

				/* Get the item */
				j_ptr = &inventory[j];

				/* Skip empty items */
				if (!j_ptr->k_idx) continue;

				/*
				 * Get maximum number of the stack if these
				 * are similar, get zero otherwise.
				 */
				max_num = object_similar_part(j_ptr, o_ptr);

				/* Can we (partially) drop "o_ptr" onto "j_ptr"? */
				if (max_num && j_ptr->number < max_num)
				{
					if (o_ptr->number + j_ptr->number <= max_num)
					{
						/* Take note */
						flag = TRUE;

						/* Add together the item counts */
						object_absorb(j_ptr, o_ptr);

						/* One object is gone */
						inven_cnt--;

						/* Slide everything down */
						for (k = i; k < INVEN_PACK; k++)
						{
							/* Structure copy */
							inventory[k] = inventory[k + 1];
						}

						/* Erase the "final" slot */
						object_wipe(&inventory[k]);
					}
					else
					{
						int remain = j_ptr->number + o_ptr->number - max_num;
						int old_num = o_ptr->number;
#if 0
						o_ptr->number -= remain;
#endif
						/* Add together the item counts */
						object_absorb(j_ptr, o_ptr);

						o_ptr->number = remain;

						/* Hack -- if rods are stacking. */
						if (o_ptr->tval == TV_ROD)
						{
							o_ptr->pval = o_ptr->pval * remain / old_num;
							o_ptr->timeout = o_ptr->timeout * remain / old_num;
						}

						/* Hack -- if wands are stacking. */
						if (o_ptr->tval == TV_WAND)
						{
							o_ptr->pval = o_ptr->pval * remain / old_num;
						}
					}

					/* Window stuff */
					p_ptr->window |= (PW_INVEN);

					/* Take note */
					combined = TRUE;

					/* Done */
					break;
				}
			}
		}
	}
	while (combined);

	/* Message */
#ifdef JP
	if (flag) msg_print("ザックの中のアイテムをまとめ直した。");
#else
	if (flag) msg_print("You combine some items in your pack.");
#endif
}


/*
 * Reorder items in the pack
 *
 * Note special handling of the "overflow" slot
 */
void reorder_pack(void)
{
	int             i, j, k;
	s32b            o_value;
	object_type     forge;
	object_type     *q_ptr;
	object_type     *o_ptr;
	bool            flag = FALSE;


	/* Re-order the pack (forwards) */
	for (i = 0; i < INVEN_PACK; i++)
	{
		/* Mega-Hack -- allow "proper" over-flow */
		if ((i == INVEN_PACK) && (inven_cnt == INVEN_PACK)) break;

		/* Get the item */
		o_ptr = &inventory[i];

		/* Skip empty slots */
		if (!o_ptr->k_idx) continue;

		/* Get the "value" of the item */
		o_value = object_value(o_ptr);

		/* Scan every occupied slot */
		for (j = 0; j < INVEN_PACK; j++)
		{
			if (object_sort_comp(o_ptr, o_value, &inventory[j])) break;
		}

		/* Never move down */
		if (j >= i) continue;

		/* Take note */
		flag = TRUE;

		/* Get local object */
		q_ptr = &forge;

		/* Save a copy of the moving item */
		object_copy(q_ptr, &inventory[i]);

		/* Slide the objects */
		for (k = i; k > j; k--)
		{
			/* Slide the item */
			object_copy(&inventory[k], &inventory[k-1]);
		}

		/* Insert the moving item */
		object_copy(&inventory[j], q_ptr);

		/* Window stuff */
		p_ptr->window |= (PW_INVEN);
	}

	/* Message */
#ifdef JP
if (flag) msg_print("ザックの中のアイテムを並べ直した。");
#else
	if (flag) msg_print("You reorder some items in your pack.");
#endif

}


bool can_player_destroy_object(object_type *o_ptr)
{
	/* Non-artifacts can be destroyed */
	if (!artifact_p(o_ptr) && !o_ptr->art_name) return TRUE;

	/* If object is unidentified, makes fake inscription */
	if (!object_known_p(o_ptr))
	{
		/* Hack -- inscribe the artifact */
		o_ptr->feeling = (cursed_p(o_ptr) || broken_p(o_ptr)) ? FEEL_TERRIBLE : FEEL_SPECIAL;

		/* We have "felt" it (again) */
		o_ptr->ident |= (IDENT_SENSE);

		/* Combine the pack */
		p_ptr->notice |= (PN_COMBINE);

		/* Redraw equippy chars */
		p_ptr->redraw |= (PR_EQUIPPY);

		/* Window stuff */
		p_ptr->window |= (PW_INVEN | PW_EQUIP);
	}

	return FALSE;
}


/*
 * Hack -- display an object kind in the current window
 *
 * Include list of usable spells for readible books
 */
void display_koff(int k_idx)
{
	int y;

	object_type forge;
	object_type *q_ptr;

	char o_name[MAX_NLEN];


	/* Erase the window */
	for (y = 0; y < Term->hgt; y++)
	{
		/* Erase the line */
		Term_erase(0, y, 255);
	}

	/* No info */
	if (!k_idx) return;

	/* Get local object */
	q_ptr = &forge;

	/* Prepare the object */
	object_prep(q_ptr, k_idx);

	/* Describe */
	object_desc(o_name, q_ptr, OD_OMIT_PREFIX | OD_NAME_ONLY | OD_STORE);

	/* Mention the object name */
	Term_putstr(0, 0, -1, TERM_WHITE, o_name);

	/* Warriors are illiterate */
	if (!(p_ptr->realm1 || p_ptr->realm2)) return;

	/* Display spells in readible books */
#if 0
	if ((q_ptr->tval == REALM1_BOOK) ||
	    (q_ptr->tval == REALM2_BOOK))
#else
	if (q_ptr->tval == REALM1_BOOK)
#endif
	{
		int     sval;
		int     spell;
		int     num = 0;
		byte    spells[64];


		/* Access the item's sval */
		sval = q_ptr->sval;

		/* Extract spells */
		for (spell = 0; spell < 32; spell++)
		{
			/* Check for this spell */
			if (fake_spell_flags[sval] & (1L << spell))
			{
				/* Collect this spell */
				spells[num++] = spell;
			}
		}

		/* Print spells */
		print_spells(spells, num, 2, 0,
		    (q_ptr->tval == REALM1_BOOK ? p_ptr->realm1 - 1 : p_ptr->realm2 - 1));
	}
}

/* Choose one of items that have warning flag */
object_type *choose_warning_item(void)
{
	int i;
	int choices[INVEN_TOTAL - INVEN_WIELD];
	int number = 0;
	u32b f1, f2, f3;

	/* Paranoia -- Player has no warning ability */
	if (!p_ptr->warning) return NULL;

	/* Search Inventory */
	for (i = INVEN_WIELD; i < INVEN_TOTAL; i++)
	{
		object_flags(&inventory[i], &f1, &f2, &f3);

		if (f3 & (TR3_WARNING)) choices[number++] = i;
	}

	/* Choice one of them */
	return number ? &inventory[choices[randint0(number)]] : NULL;
}

/* Calculate spell damages */
static void spell_damcalc(int typ, int dam, int limit, int *max)
{
	bool complete_immune = FALSE;

	if (limit) dam = (dam > limit) ? limit : dam;

	/* Vulnerability, resistance and immunity */
	switch (typ)
	{
	case GF_ELEC:
		if (p_ptr->immune_elec)
		{
			dam = 0;
			complete_immune = TRUE;
		}
		else
		{
			if (p_ptr->muta & MUT_VULN_ELEM) dam *= 2;
			if (p_ptr->resist_elec) dam = (dam + 2) / 3;
			if (p_ptr->oppose_elec) dam = (dam + 2) / 3;
		}
		break;

	case GF_POIS:
		if (p_ptr->resist_pois) dam = (dam + 2) / 3;
		if (p_ptr->oppose_pois) dam = (dam + 2) / 3;
		break;

	case GF_ACID:
		if (p_ptr->immune_acid)
		{
			dam = 0;
			complete_immune = TRUE;
		}
		else
		{
			if (p_ptr->muta & MUT_VULN_ELEM) dam *= 2;
			if (p_ptr->resist_acid) dam = (dam + 2) / 3;
			if (p_ptr->oppose_acid) dam = (dam + 2) / 3;
		}
		break;

	case GF_COLD:
	case GF_ICE:
		if (p_ptr->immune_cold)
		{
			dam = 0;
			complete_immune = TRUE;
		}
		else
		{
			if (p_ptr->muta & MUT_VULN_ELEM)
				dam *= 2;
			if (p_ptr->resist_cold) dam = (dam + 2) / 3;
			if (p_ptr->oppose_cold) dam = (dam + 2) / 3;
		}
		break;

	case GF_FIRE:
		if (p_ptr->immune_fire)
		{
			dam = 0;
			complete_immune = TRUE;
		}
		else
		{
			if (p_ptr->muta & MUT_VULN_ELEM)
				dam *= 2;
			if (p_ptr->resist_fire) dam = (dam + 2) / 3;
			if (p_ptr->oppose_fire) dam = (dam + 2) / 3;
		}
		break;

	case GF_LITE:
		if (p_ptr->resist_lite) dam = dam * 4 / 7; /* Worst case of 4 / (d6 + 6) */
#if 0
		if (p_ptr->prace == RACE_VAMPIRE)
			dam *= 2;
#endif
		break;

	case GF_DARK:
		/* if ((p_ptr->prace == RACE_VAMPIRE) || p_ptr->wraith_form) */
		if (p_ptr->wraith_form)
		{
			dam = 0;
			complete_immune = TRUE;
		}
		else if (p_ptr->resist_dark) dam = dam * 4 / 7; /* Worst case of 4 / (d6 + 6) */
		break;

	case GF_SHARDS:
		if (p_ptr->resist_shard) dam = dam * 6 / 7; /* Worst case of 6 / (d6 + 6) */
		break;

	case GF_SOUND:
		if (p_ptr->resist_sound) dam = dam * 5 / 7; /* Worst case of 5 / (d6 + 6) */
		break;

	case GF_CONFUSION:
		if (p_ptr->resist_conf) dam = dam * 5 / 7; /* Worst case of 5 / (d6 + 6) */
		break;

	case GF_CHAOS:
		if (p_ptr->resist_chaos) dam = dam * 6 / 7; /* Worst case of 6 / (d6 + 6) */
		break;

	case GF_NETHER:
		if (p_ptr->resist_neth) dam = dam * 6 / 7; /* Worst case of 6 / (d6 + 6) */
		break;

	case GF_DISENCHANT:
		if (p_ptr->resist_disen) dam = dam * 6 / 7; /* Worst case of 6 / (d6 + 6) */
		break;

	case GF_NEXUS:
		if (p_ptr->resist_nexus) dam = dam * 6 / 7; /* Worst case of 6 / (d6 + 6) */
		break;

	case GF_TIME:
		if (p_ptr->muta & MUT_RES_TIME) dam = dam * 4 / 7; /* Worst case of 4 / (d6 + 6) */
		break;

	case GF_GRAVITY:
		if (p_ptr->ffall) dam = (dam * 2) / 3;
		break;

	case GF_ROCKET:
		if (p_ptr->resist_shard) dam /= 2;
		break;

	case GF_NUKE:
		if (p_ptr->resist_pois) dam = (2 * dam + 2) / 5;
		if (p_ptr->oppose_pois) dam = (2 * dam + 2) / 5;
		break;

	case GF_DEATH_RAY:
#if 0
		switch (p_ptr->prace)
		{
		case RACE_VAMPIRE:
			dam = 0;
			complete_immune = TRUE;
			break;
		}
#endif
		break;
	}

	if (p_ptr->wraith_form)
	{
		dam /= 3;
		if (!dam && !complete_immune) dam = 1;
	}

	if (dam > *max) *max = dam;
}

/* Calculate blow damages */
static int blow_damcalc(monster_blow *blow_ptr)
{
	int  dam = blow_ptr->d_dice * blow_ptr->d_side;
	int  dummy_max = 0;
	bool check_wraith_form = TRUE;

	if (blow_ptr->method != RBM_EXPLODE)
	{
		int ac = p_ptr->ac + p_ptr->to_a;

		switch (blow_ptr->effect)
		{
		case RBE_HURT:
		case RBE_SHATTER:
			dam -= (dam * ((ac < 150) ? ac : 150) / 250);
			break;

		case RBE_ACID:
			spell_damcalc(GF_ACID, dam, 0, &dummy_max);
			dam = dummy_max;
			check_wraith_form = FALSE;
			break;

		case RBE_ELEC:
			spell_damcalc(GF_ELEC, dam, 0, &dummy_max);
			dam = dummy_max;
			check_wraith_form = FALSE;
			break;

		case RBE_FIRE:
			spell_damcalc(GF_FIRE, dam, 0, &dummy_max);
			dam = dummy_max;
			check_wraith_form = FALSE;
			break;

		case RBE_COLD:
			spell_damcalc(GF_COLD, dam, 0, &dummy_max);
			dam = dummy_max;
			check_wraith_form = FALSE;
			break;

		case RBE_PARALYZE:
			if (p_ptr->paralyzed && (dam < 1)) dam = 1;
			break;
		}

		if (check_wraith_form)
		{
			if (p_ptr->wraith_form)
			{
				dam /= 3;
				if (!dam) dam = 1;
			}
		}
	}
	else
	{
		dam = (dam + 1) / 2;
		spell_damcalc(mbe_info[blow_ptr->effect].explode_type, dam, 0, &dummy_max);
		dam = dummy_max;
	}

	return dam;
}

#define WARNING_AWARE_RANGE 12

/* Examine a grid (xx,yy) and warn if there are any danger */
bool process_warning(int xx, int yy)
{
	int mx,my;
	cave_type *c_ptr;
	object_type *o_ptr;
	char o_name[MAX_NLEN];

	int dam_max = 0;
	static int old_damage = 0;

	for (mx = xx - WARNING_AWARE_RANGE; mx < xx + WARNING_AWARE_RANGE + 1; mx++)
	{
		for (my = yy - WARNING_AWARE_RANGE; my < yy + WARNING_AWARE_RANGE + 1; my++)
		{
			int dx = (mx > xx) ? (mx - xx) : (xx - mx);
			int dy = (my > yy) ? (my - yy) : (yy - my);

			/* Approximate distance */
			int d = (dy > dx) ? (dy + (dx >> 1)) : (dx + (dy >> 1));

			if (!in_bounds(my, mx) || (d > WARNING_AWARE_RANGE)) continue;

			c_ptr = &cave[my][mx];
			if (c_ptr->m_idx > 0)
			{
				int dam_max0 = 0;
				monster_type *m_ptr = &m_list[c_ptr->m_idx];
				monster_race *r_ptr = &r_info[m_ptr->r_idx];

				if (m_ptr->csleep) continue;
				if (!is_hostile(m_ptr)) continue;

				/* Monster spells (only powerful ones)*/
				if (projectable(my, mx, yy, xx))
				{
					int breath_dam_div3 = m_ptr->hp / 3;
					int breath_dam_div6 = m_ptr->hp / 6;
					int rlev = ((r_ptr->level >= 1) ? r_ptr->level : 1);
					int storm_dam = rlev * 4 + 100;
					u32b f4 = r_ptr->flags4;
					u32b f5 = r_ptr->flags5;
					u32b f6 = r_ptr->flags6;

					/* Breath attacks & rocket */
					if (f4 & RF4_THROW)   spell_damcalc(GF_SHARDS, rlev * 4 + 100, 800, &dam_max0);
					if (f4 & RF4_ROCKET)  spell_damcalc(GF_ROCKET, m_ptr->hp / 4, 800, &dam_max0);
					if (f4 & RF4_BR_ACID) spell_damcalc(GF_ACID, breath_dam_div3, 1200, &dam_max0);
					if (f4 & RF4_BR_ELEC) spell_damcalc(GF_ELEC, breath_dam_div3, 1200, &dam_max0);
					if (f4 & RF4_BR_FIRE) spell_damcalc(GF_FIRE, breath_dam_div3, 1200, &dam_max0);
					if (f4 & RF4_BR_COLD) spell_damcalc(GF_COLD, breath_dam_div3, 1200, &dam_max0);
					if (f4 & RF4_BR_POIS) spell_damcalc(GF_POIS, breath_dam_div3, 800, &dam_max0);
					if (f4 & RF4_BR_NETH) spell_damcalc(GF_NETHER, breath_dam_div6, 500, &dam_max0);
					if (f4 & RF4_BR_LITE) spell_damcalc(GF_LITE, breath_dam_div6, 400, &dam_max0);
					if (f4 & RF4_BR_DARK) spell_damcalc(GF_DARK, breath_dam_div6, 400, &dam_max0);
					if (f4 & RF4_BR_CONF) spell_damcalc(GF_CONFUSION, breath_dam_div6, 400, &dam_max0);
					if (f4 & RF4_BR_SOUN) spell_damcalc(GF_SOUND, breath_dam_div6, 400, &dam_max0);
					if (f4 & RF4_BR_CHAO) spell_damcalc(GF_CHAOS, breath_dam_div6, 500, &dam_max0);
					if (f4 & RF4_BR_DISE) spell_damcalc(GF_DISENCHANT, breath_dam_div6, 500, &dam_max0);
					if (f4 & RF4_BR_NEXU) spell_damcalc(GF_NEXUS, breath_dam_div3, 250, &dam_max0);
					if (f4 & RF4_BR_TIME) spell_damcalc(GF_TIME, breath_dam_div3, 150, &dam_max0);
					if (f4 & RF4_BR_INER) spell_damcalc(GF_INERTIA, breath_dam_div6, 200, &dam_max0);
					if (f4 & RF4_BR_GRAV) spell_damcalc(GF_GRAVITY, breath_dam_div3, 200, &dam_max0);
					if (f4 & RF4_BR_SHAR) spell_damcalc(GF_SHARDS, breath_dam_div6, 400, &dam_max0);
					if (f4 & RF4_BR_PLAS) spell_damcalc(GF_PLASMA, breath_dam_div6, 150, &dam_max0);
					if (f4 & RF4_BR_WALL) spell_damcalc(GF_FORCE, breath_dam_div6, 200, &dam_max0);
					if (f4 & RF4_BR_MANA) spell_damcalc(GF_MANA, breath_dam_div3, 250, &dam_max0);
					if (f4 & RF4_BR_NUKE) spell_damcalc(GF_NUKE, breath_dam_div3, 800, &dam_max0);
					if (f4 & RF4_BR_DISI) spell_damcalc(GF_DISINTEGRATE, breath_dam_div6, 150, &dam_max0);

					/* Spell attacks */
					if (f4 & RF4_BA_LITE) spell_damcalc(GF_LITE, storm_dam, 0, &dam_max0);
					if (f4 & RF4_BA_CHAO) spell_damcalc(GF_CHAOS, rlev * 2 + 100, 0, &dam_max0);
					if (f5 & RF5_BA_MANA) spell_damcalc(GF_MANA, storm_dam, 0, &dam_max0);
					if (f5 & RF5_BA_DARK) spell_damcalc(GF_DARK, storm_dam, 0, &dam_max0);

					/* Hack -- Hand of Doom */
					if (f6 & RF6_HAND_DOOM)
					{
						if (p_ptr->skill_sav < 100)
						{
							int hand_doom_dam = p_ptr->chp * 9 / 10;
							if (p_ptr->wraith_form)
							{
								hand_doom_dam /= 3;
								if (!hand_doom_dam) hand_doom_dam = 1;
							}
							if (hand_doom_dam > dam_max0) dam_max0 = hand_doom_dam;
						}
					}
				}

				/* Monster melee attacks */
				if (!(r_ptr->flags1 & RF1_NEVER_BLOW))
				{
					if (mx <= xx + 1 && mx >= xx - 1 && my <= yy + 1 && my >= yy - 1)
					{
						int m;
						int dam_melee = 0;
						for (m = 0; m < 4; m++)
						{
							/* Skip non-attacks */
							if (!r_ptr->blow[m].method) continue;

							/* Extract the attack info */
							dam_melee += blow_damcalc(&r_ptr->blow[m]);
							if (r_ptr->blow[m].method == RBM_EXPLODE) break;
						}
						if (dam_melee > dam_max0) dam_max0 = dam_melee;
					}
				}

				/* Contribution from this monster */
				dam_max += dam_max0;
			}
		}
	}

	/* Prevent excessive warning */
	if (dam_max > old_damage)
	{
		old_damage = dam_max * 3 / 2;

		if (dam_max > (p_ptr->chp / 2))
		{
			o_ptr = choose_warning_item();
			if (o_ptr) object_desc(o_name, o_ptr, OD_OMIT_PREFIX | OD_NAME_ONLY);
#ifdef JP
			else strcpy(o_name, "体"); /* Warning ability without item */
			msg_format("%sが鋭く震えた！", o_name);
#else
			else strcpy(o_name, "body"); /* Warning ability without item */
			msg_format("Your %s pulsates sharply!", o_name);
#endif
			sound(SOUND_HITPOINT_WARN);
			disturb(0, 0);
			return TRUE;
		}
	}
	else old_damage /= 2;

	c_ptr = &cave[yy][xx];
	if ((c_ptr->feat == FEAT_INVIS) && !one_in_(13))
	{
		o_ptr = choose_warning_item();
		if (o_ptr) object_desc(o_name, o_ptr, OD_OMIT_PREFIX | OD_NAME_ONLY);
#ifdef JP
		else strcpy(o_name, "体"); /* Warning ability without item */
		msg_format("%sが震えた！", o_name);
#else
		else strcpy(o_name, "body"); /* Warning ability without item */
		msg_format("Your %s pulsates!", o_name);
#endif
		sound(SOUND_HITPOINT_WARN);
		disturb(0, 0);
		return TRUE;
	}
	return FALSE;
}
