|||||oy

#####R             /----------------------------------------\
#####R            <      spell.pkg functions helper file     >
#####R             \----------------------------------------/

----------------------------------------------------------------------

#####R=== teleport_player_directed ===

#####GDeclaration
    extern void teleport_player_directed(int rad, int dir);

#####GFile
    spells1.c

#####GComment
/*
 * Teleport player, using a distance and a direction as a rough guide.
 *
 * This function is not at all obsessive about correctness.
 * This function allows teleporting into vaults (!)
 */

#####GDescription
Teleport a player up to "rad" grids away roughly in "dir" direction.

#####GParameters
> "rad" must not exceed 200. The distance teleported is a minimum of a
  quarter of "rad".
> "dir" must be from 0 to 9.
  *****fields.txt*0[direction]

----------------------------------------------------------------------

#####R=== teleport_away ===

#####GDeclaration
    extern void teleport_away(int m_idx, int dis);

#####GFile
    spells1.c

#####GComment
/*
 * Teleport a monster, normally up to "dis" grids away.
 *
 * Attempt to move the monster at least "dis/2" grids away.
 *
 * But allow variation to prevent infinite loops.
 */

#####GDescription
Teleport monster indicated by "m_idx" up to "dis" grids away.

#####GParameters
> "m_idx" is the index of the monster in m_list[].
> "dis" must not exceed 200. The distance teleported is a minimum of a
  quarter of "dis".

----------------------------------------------------------------------

#####R=== teleport_player ===

#####GDeclaration
    extern void teleport_player(int dis);

#####GFile
    spells1.c

#####GComment
/*
 * Teleport the player to a location up to "dis" grids away.
 *
 * If no such spaces are readily available, the distance may increase.
 * Try very hard to move the player at least a quarter that distance.
 */

#####GDescription
Teleport player up to "dis" grids away.

#####GParameters
> "dis" must not exceed 200. The distance teleported is a minimum of a
  quarter of "dis".

----------------------------------------------------------------------

#####R=== teleport_player_to ===

#####GDeclaration
    extern void teleport_player_to(int ny, int nx);

#####GFile
    spells1.c

#####GComment
/*
 * Teleport player to a grid near the given location
 *
 * This function is slightly obsessive about correctness.
 * This function allows teleporting into vaults (!)
 */

#####GDescription
Teleport player to a grid near the given location ("ny", "nx"). If
the location is empty, the player goes there, otherwise they go to
a grid as close as possible to the location.

#####GParameters
> "ny" is the y co-ordinate of the location.
> "nx" is the x co-ordinate of the location.

----------------------------------------------------------------------

#####R=== teleport_monster_to ===

#####GDeclaration
    extern void teleport_monster_to(int m_idx, int ny,
        int nx);

#####GFile
    spells1.c

#####GComment
/*
 * Teleport a monster to a grid near the given location
 *
 * This function is slightly obsessive about correctness.
 */

#####GDescription
Teleport monster indicated by "m_idx" to a grid near the given
location ("ny", "nx"). If the location is empty, the monster goes
there, otherwise they go to a grid as close as possible to the
location.

#####GParameters
> "m_idx" is the index of the monster in m_list[].
> "ny" is the y co-ordinate of the location.
> "nx" is the x co-ordinate of the location.

----------------------------------------------------------------------

#####R=== teleport_player_level ===

#####GDeclaration
    extern void teleport_player_level(void);

#####GFile
    spells1.c

#####GComment
/*
 * Teleport the player one level up or down (random when legal)
 */

#####GDescription
Teleport the player one level up or down at random.

----------------------------------------------------------------------

#####R=== recall_player ===

#####GDeclaration
    extern void recall_player(void);

#####GFile
    spells1.c

#####GComment
/*
 * Recall the player to town or dungeon
 */

#####GDescription
Recall the player to town (if in dungeon) or dungeon (if in town).

----------------------------------------------------------------------

#####R=== take_hit ===

#####GDeclaration
    extern void take_hit(int damage, cptr kb_str);

#####GFile
    spells1.c

#####GComment
/*
 * Decreases players hit points and sets death flag if necessary
 *
 * XXX XXX XXX Invulnerability needs to be changed into a "shield"
 *
 * XXX XXX XXX Hack -- this function allows the user to save (or quit)
 * the game when he dies, since the "You die." message is shown before
 * setting the player to "dead".
 */

#####GDescription
Reduce the player's current hit points by "damage" points. If the
player dies, "kb_str" is used to record what the player was killed by
(see high-score table).

#####GParameters
> "damage" is the amount of damage.
> "kb_str" is a string describing what killed the player.

----------------------------------------------------------------------

#####R=== take_sanity_hit ===

#####GDeclaration
    extern void take_sanity_hit(int damage, cptr hit_from);

#####GFile
    spells1.c

#####GComment
/* Decrease player's sanity. This is a copy of the function above. */

#####GDescription
Reduce the player's current sanity points by "damage" points. If the
player dies, "hit_from" is used to record what the player was killed
by (see high-score table).

#####GParameters
> "damage" is the amount of damage.
> "hit_from" is a string describing what killed the player.

----------------------------------------------------------------------

#####R=== project ===

#####GDeclaration
    extern bool project(int who, int rad, int y, int x,
        int dam, int typ, int flg);

#####GFile
    spells1.c

#####GComment
/*
 * Generic "beam"/"bolt"/"ball" projection routine.
 *
 * Input:
 *   who: Index of "source" monster (negative for "player")
 *        jk -- -2 for traps, only used with project_jump
 *   rad: Radius of explosion (0 = beam/bolt, 1 to 9 = ball)
 *   y,x: Target location (or location to travel "towards")
 *   dam: Base damage roll to apply to affected monsters (or player)
 *   typ: Type of damage to apply to monsters (and objects)
 *   flg: Extra bit flags (see PROJECT_xxxx in "defines.h")
 *
 * Return:
 *   TRUE if any "effects" of the projection were observed, else FALSE
 *
 * Allows a monster (or player) to project a beam/bolt/ball of a given kind
 * towards a given location (optionally passing over the heads of interposing
 * monsters), and have it do a given amount of damage to the monsters (and
 * optionally objects) within the given radius of the final location.
 *
 * A "bolt" travels from source to target and affects only the target grid.
 * A "beam" travels from source to target, affecting all grids passed through.
 * A "ball" travels from source to the target, exploding at the target, and
 *   affecting everything within the given radius of the target location.
 *
 * Traditionally, a "bolt" does not affect anything on the ground, and does
 * not pass over the heads of interposing monsters, much like a traditional
 * missile, and will "stop" abruptly at the "target" even if no monster is
 * positioned there, while a "ball", on the other hand, passes over the heads
 * of monsters between the source and target, and affects everything except
 * the source monster which lies within the final radius, while a "beam"
 * affects every monster between the source and target, except for the casting
 * monster (or player), and rarely affects things on the ground.
 *
 * Two special flags allow us to use this function in special ways, the
 * "PROJECT_HIDE" flag allows us to perform "invisible" projections, while
 * the "PROJECT_JUMP" flag allows us to affect a specific grid, without
 * actually projecting from the source monster (or player).
 *
 * The player will only get "experience" for monsters killed by himself
 * Unique monsters can only be destroyed by attacks from the player
 *
 * Only 256 grids can be affected per projection, limiting the effective
 * "radius" of standard ball attacks to nine units (diameter nineteen).
 *
 * One can project in a given "direction" by combining PROJECT_THRU with small
 * offsets to the initial location (see "line_spell()"), or by calculating
 * "virtual targets" far away from the player.
 *
 * One can also use PROJECT_THRU to send a beam/bolt along an angled path,
 * continuing until it actually hits something (useful for "stone to mud").
 *
 * Bolts and Beams explode INSIDE walls, so that they can destroy doors.
 *
 * Balls must explode BEFORE hitting walls, or they would affect monsters
 * on both sides of a wall.  Some bug reports indicate that this is still
 * happening in 2.7.8 for Windows, though it appears to be impossible.
 *
 * We "pre-calculate" the blast area only in part for efficiency.
 * More importantly, this lets us do "explosions" from the "inside" out.
 * This results in a more logical distribution of "blast" treasure.
 * It also produces a better (in my opinion) animation of the explosion.
 * It could be (but is not) used to have the treasure dropped by monsters
 * in the middle of the explosion fall "outwards", and then be damaged by
 * the blast as it spreads outwards towards the treasure drop location.
 *
 * Walls and doors are included in the blast area, so that they can be
 * "burned" or "melted" in later versions.
 *
 * This algorithm is intended to maximise simplicity, not necessarily
 * efficiency, since this function is not a bottleneck in the code.
 *
 * We apply the blast effect from ground zero outwards, in several passes,
 * first affecting features, then objects, then monsters, then the player.
 * This allows walls to be removed before checking the object or monster
 * in the wall, and protects objects which are dropped by monsters killed
 * in the blast, and allows the player to see all affects before he is
 * killed or teleported away.  The semantics of this method are open to
 * various interpretations, but they seem to work well in practice.
 *
 * We process the blast area from ground-zero outwards to allow for better
 * distribution of treasure dropped by monsters, and because it provides a
 * pleasing visual effect at low cost.
 *
 * Note that the damage done by "ball" explosions decreases with distance.
 * This decrease is rapid, grids at radius "dist" take "1/dist" damage.
 *
 * Notice the "napalm" effect of "beam" weapons.  First they "project" to
 * the target, and then the damage "flows" along this beam of destruction.
 * The damage at every grid is the same as at the "centre" of a "ball"
 * explosion, since the "beam" grids are treated as if they ARE at the
 * centre of a "ball" explosion.
 *
 * Currently, specifying "beam" plus "ball" means that locations which are
 * covered by the initial "beam", and also covered by the final "ball", except
 * for the final grid (the epicentre of the ball), will be "hit twice", once
 * by the initial beam, and once by the exploding ball.  For the grid right
 * next to the epicentre, this results in 150% damage being done.  The centre
 * does not have this problem, for the same reason the final grid in a "beam"
 * plus "bolt" does not -- it is explicitly removed.  Simply removing "beam"
 * grids which are covered by the "ball" will NOT work, as then they will
 * receive LESS damage than they should.  Do not combine "beam" with "ball".
 *
 * The array "gy[],gx[]" with current size "grids" is used to hold the
 * collected locations of all grids in the "blast area" plus "beam path".
 *
 * Note the rather complex usage of the "gm[]" array.  First, gm[0] is always
 * zero.  Second, for N>1, gm[N] is always the index (in gy[],gx[]) of the
 * first blast grid (see above) with radius "N" from the blast centre.  Note
 * that only the first gm[1] grids in the blast area thus take full damage.
 * Also, note that gm[rad+1] is always equal to "grids", which is the total
 * number of blast grids.
 *
 * Note that once the projection is complete, (y2,x2) holds the final location
 * of bolts/beams, and the "epicentre" of balls.
 *
 * Note also that "rad" specifies the "inclusive" radius of projection blast,
 * so that a "rad" of "one" actually covers 5 or 9 grids, depending on the
 * implementation of the "distance" function.  Also, a bolt can be properly
 * viewed as a "ball" with a "rad" of "zero".
 *
 * Note that if no "target" is reached before the beam/bolt/ball travels the
 * maximum distance allowed (MAX_RANGE), no "blast" will be induced.  This
 * may be relevant even for bolts, since they have a "1x1" mini-blast.
 *
 * Note that for consistency, we "pretend" that the bolt actually takes "time"
 * to move from point A to point B, even if the player cannot see part of the
 * projection path.  Note that in general, the player will *always* see part
 * of the path, since it either starts at the player or ends on the player.
 *
 * Hack -- we assume that every "projection" is "self-illuminating".
 *
 * Hack -- when only a single monster is affected, we automatically track
 * (and recall) that monster, unless "PROJECT_JUMP" is used.
 *
 * Note that all projections now "explode" at their final destination, even
 * if they were being projected at a more distant destination.  This means
 * that "ball" spells will *always* explode.
 *
 * Note that we must call "handle_stuff()" after affecting terrain features
 * in the blast radius, in case the "illumination" of the grid was changed,
 * and "update_view()" and "update_monsters()" need to be called.
 */

#####GDescription
Generate a beam/bolt/ball starting from "who" with a radius of "rad"
at target grid "y,x" for "damage" points of "typ" damage. The beam/
bolt/ball can have various properties as denoted by "flg".

#####GParameters
> "who" is > 0 (index of monster in m_list[]), < 0 and
  not -100 or -101 (player), -100 or -101 (trap).
> "rad" is 0 for a beam/bolt and 1-9 for a ball.
> "y" is the y co-ordinate of the target grid.
> "x" is the x co-ordinate of the target grid.
> "dam" is the number of points of damage.
> "typ" is the type of damage
  *****fields.txt*0[GF_fields]
> "flg" is the projection effect
  *****fields.txt*0[PROJECT_fields]

----------------------------------------------------------------------

#####R=== corrupt_player ===

#####GDeclaration
    extern void corrupt_player(void);

#####GFile
    spells1.c

#####GComment
(none)

#####GDescription
Swap two of the players stats at random.

----------------------------------------------------------------------

#####R=== grow_trees ===

#####GDeclaration
    extern void grow_trees(int rad);

#####GFile
    spells2.c

#####GComment
/*
 * Grow trees
 */

#####GDescription
Grow up to (("rad" x "rad") + 11) trees around the player.

#####GParameters
> "rad" is the radius of the area where trees may grow.

----------------------------------------------------------------------

#####R=== hp_player ===

#####GDeclaration
    extern bool hp_player(int num);

#####GFile
    spells2.c

#####GComment
/*
 * Increase players hit points, notice effects
 */

#####GDescription
Add "num" points to the player's current hit points. The total can
not exceed the maximum.

#####GParameters
> "num" is the number of points to add.

----------------------------------------------------------------------

#####R=== heal_insanity ===

#####GDeclaration
    extern bool heal_insanity(int val);

#####GFile
    spells2.c

#####GComment
/* Heal insanity. */

#####GDescription
Add "val" points to the player's current sanity points. The total can
not exceed the maximum.

#####GParameters
> "val" is the number of points to add.

----------------------------------------------------------------------

#####R=== warding_glyph ===

#####GDeclaration
    extern void warding_glyph(void);

#####GFile
    spells2.c

#####GComment
/*
 * Leave a "glyph of warding" which prevents monster movement
 */

#####GDescription
Place a glyph at the player's location. The location must be bare.

----------------------------------------------------------------------

#####R=== explosive_rune ===

#####GDeclaration
    extern void explosive_rune(void);

#####GFile
    spells2.c

#####GComment
(none)

#####GDescription
Place a minor glyph (explosive rune) at the player's location. The
location must be bare.

----------------------------------------------------------------------

#####R=== do_dec_stat ===

#####GDeclaration
    extern bool do_dec_stat(int stat, int mode);

#####GFile
    spells2.c

#####GComment
/*
 * Lose a "point"
 */

#####GDescription
Attempt to reduce the player's "stat" statistic by a point.

#####GParameters
> "stat" is the statistic
  *****fields.txt*0[A_fields]
> "mode" is the type of decrease: temporary, normal, or permanent
  *****fields.txt*0[STAT_DEC_fields]

----------------------------------------------------------------------

#####R=== do_res_stat ===

#####GDeclaration
    extern bool do_res_stat(int stat);

#####GFile
    spells2.c

#####GComment
/*
 * Restore lost "points" in a stat
 */

#####GDescription
Restore the player's "stat" statistic.

#####GParameters
> "stat" is the statistic
  *****fields.txt*0[A_fields]

----------------------------------------------------------------------

#####R=== do_inc_stat ===

#####GDeclaration
    extern bool do_inc_stat(int stat);

#####GFile
    spells2.c

#####GComment
/*
 * Gain a "point" in a stat
 */

#####GDescription
Increase the player's "stat" statistic by a point.

#####GParameters
> "stat" is the statistic
  *****fields.txt*0[A_fields]

----------------------------------------------------------------------

#####R=== identify_pack ===

#####GDeclaration
    extern void identify_pack(void);

#####GFile
    spells2.c

#####GComment
/*
 * Identify everything being carried.
 * Done by a potion of "self knowledge".
 */

#####GDescription
Identify all items in the inventory.

----------------------------------------------------------------------

#####R=== remove_curse ===

#####GDeclaration
    extern bool remove_curse(void);

#####GFile
    spells2.c

#####GComment
/*
 * Remove most curses
 */

#####GDescription
Remove all curses except for heavy curses.

----------------------------------------------------------------------

#####R=== remove_all_curse ===

#####GDeclaration
    extern bool remove_all_curse(void);

#####GFile
    spells2.c

#####GComment
/*
 * Remove all curses
 */

#####GDescription
Remove all curses including heavy curses.

----------------------------------------------------------------------

#####R=== restore_level ===

#####GDeclaration
    extern bool restore_level(void);

#####GFile
    spells2.c

#####GComment
/*
 * Restores any drained experience
 */

#####GDescription
Restore all drained experience points (if any).

----------------------------------------------------------------------

#####R=== self_knowledge ===

#####GDeclaration
    extern void self_knowledge(FILE *fff);

#####GFile
    spells2.c

#####GComment
/*
 * self-knowledge... idea from nethack.  Useful for determining powers and
 * resistances of items.  It saves the screen, clears it, then starts listing
 * attributes, a screenful at a time.  (There are a LOT of attributes to
 * list.  It will probably take 2 or 3 screens for a powerful character whose
 * using several artifacts...) -CFT
 *
 * It is now a lot more efficient. -BEN-
 *
 * See also "identify_fully()".
 *
 * XXX XXX XXX Use the "show_file()" method, perhaps.
 */

#####GDescription
Show all attributes including racial powers, mutations, and equipment
effects.

#####GParameters
> "*ffff" points to a file (write info to file) or is NULL (write info
  to screen).

----------------------------------------------------------------------

#####R=== lose_all_info ===

#####GDeclaration
    extern bool lose_all_info(void);

#####GFile
    spells2.c

#####GComment
/*
 * Forget everything
 */

#####GDescription
Forget about objects and the map.

----------------------------------------------------------------------

#####R=== detect_traps ===

#####GDeclaration
    extern bool detect_traps(void);

#####GFile
    spells2.c

#####GComment
/*
 * Detect all traps on current panel
 */

#####GDescription
Detect all traps on current panel.

----------------------------------------------------------------------

#####R=== detect_doors ===

#####GDeclaration
    extern bool detect_doors(void);

#####GFile
    spells2.c

#####GComment
/*
 * Detect all doors on current panel
 */

#####GDescription
Detect all doors on current panel.

----------------------------------------------------------------------

#####R=== detect_stairs ===

#####GDeclaration
    extern bool detect_stairs(void);

#####GFile
    spells2.c

#####GComment
/*
 * Detect all stairs on current panel
 */

#####GDescription
Detect all stairs on current panel.

----------------------------------------------------------------------

#####R=== detect_treasure ===

#####GDeclaration
    extern bool detect_treasure(void);

#####GFile
    spells2.c

#####GComment
/*
 * Detect any treasure on the current panel
 */

#####GDescription
Detect any treasure on the current panel.

----------------------------------------------------------------------

Field: hack_no_detect_message
Value: FALSE

----------------------------------------------------------------------

#####R=== detect_objects_gold ===

#####GDeclaration
    extern bool detect_objects_gold(void);

#####GFile
    spells2.c

#####GComment
/*
 * Detect all "gold" objects on the current panel
 */

#####GDescription
Detect all objects with the TV_GOLD flag.

----------------------------------------------------------------------

#####R=== detect_objects_normal ===

#####GDeclaration
    extern bool detect_objects_normal(void);

#####GFile
    spells2.c

#####GComment
/*
 * Detect all "normal" objects on the current panel
 */

#####GDescription
Detect all objects without the TV_GOLD flag.

----------------------------------------------------------------------

#####R=== detect_objects_magic ===

#####GDeclaration
    extern bool detect_objects_magic(void);

#####GFile
    spells2.c

#####GComment
/*
 * Detect all "magic" objects on the current panel.
 *
 * This will light up all spaces with "magic" items, including artifacts,
 * ego-items, potions, scrolls, books, rods, wands, staves, amulets, rings,
 * and "enchanted" items of the "good" variety.
 *
 * It can probably be argued that this function is now too powerful.
 */

#####GDescription
Detect all "magic" objects which are artefacts, ego items, or have one
of the following flags - TV_AMULET, TV_RING, TV_BATERIE, TV_STAFF,
TV_WAND, TV_ROD, TV_ROD_MAIN, TV_SCROLL, TV_POTION, TV_POTION2,
TV_VALARIN_BOOK, TV_MAGERY_BOOK, TV_SHADOW_BOOK, TV_CHAOS_BOOK,
TV_SPIRIT_BOOK, TV_NETHER_BOOK, TV_DAEMON_BOOK, TV_CRUSADE_BOOK,
TV_SIGALDRY_BOOK, TV_SYMBIOTIC_BOOK, TV_MUSIC_BOOK.

----------------------------------------------------------------------

#####R=== detect_monsters_normal ===

#####GDeclaration
    extern bool detect_monsters_normal(void);

#####GFile
    spells2.c

#####GComment
/*
 * Detect all "normal" monsters on the current panel
 */

#####GDescription
Detect all non-invisible monsters (without RF2_INVISIBLE).

----------------------------------------------------------------------

#####R=== detect_monsters_invis ===

#####GDeclaration
    extern bool detect_monsters_invis(void);

#####GFile
    spells2.c

#####GComment
/*
 * Detect all "invisible" monsters on current panel
 */

#####GDescription
Detect all invisible monsters (with RF2_INVISIBLE).

----------------------------------------------------------------------

#####R=== detect_monsters_evil ===

#####GDeclaration
    extern bool detect_monsters_evil(void);

#####GFile
    spells2.c

#####GComment
/*
 * Detect all "evil" monsters on current panel
 */

#####GDescription
Detect all evil monsters (with RF3_EVIL).

----------------------------------------------------------------------

#####R=== detect_monsters_good ===

#####GDeclaration
    extern bool detect_monsters_good(void);

#####GFile
    spells2.c

#####GComment
/* Detect good monsters */

#####GDescription
Detect all good monsters (with RF3_GOOD).

----------------------------------------------------------------------

#####R=== detect_monsters_xxx ===

#####GDeclaration
    extern bool detect_monsters_xxx(u32b match_flag);

#####GFile
    spells2.c

#####GComment
/*
 * A "generic" detect monsters routine, tagged to flags3
 */

#####GDescription
Detect all monsters with "match_flag" flag.

#####GParameters
> "match_flag" can be any RF3_ flag (see defines.h) but only
  RF3_DEMON, RF3_UNDEAD, RF3_GOOD work.

----------------------------------------------------------------------

#####R=== detect_monsters_string ===

#####GDeclaration
    extern bool detect_monsters_string(cptr);

#####GFile
    spells2.c

#####GComment
/*
 * Detect all (string) monsters on current panel
 */

#####GDescription
Detect all monsters whose default monster character matches a
character pointed to by "cptr".

#####GParameters
> "cptr" is a pointer to a single character, eg 'Z' for hounds. For
  available characters, see the "symbol" field of the graphics (G)
  line of r_info.txt.

----------------------------------------------------------------------

#####R=== detect_monsters_nonliving ===

#####GDeclaration
    extern bool detect_monsters_nonliving(void);

#####GFile
    spells2.c

#####GComment
/*
 * Detect all "nonliving", "undead" or "demonic" monsters on current panel
 */

#####GDescription
Detect all non-living monsters (with RF3_NONLIVING, RF3_UNDEAD, or
RF3_DEMON).

----------------------------------------------------------------------

#####R=== detect_all ===

#####GDeclaration
    extern bool detect_all(void);

#####GFile
    spells2.c

#####GComment
/*
 * Detect everything
 */

#####GDescription
Detects traps, doors, stairs, treasure, gold objects, normal objects,
invisible monsters, normal (visible) monsters.

----------------------------------------------------------------------

#####R=== stair_creation ===

#####GDeclaration
    extern void stair_creation(void);

#####GFile
    spells2.c

#####GComment
/*
 * Create stairs at the player location
 */

#####GDescription
Create stairs at the player location. This is not allowed if the grid
is not empty, the player is not in a dungeon, the player is on a
special level, the player is in an arena or quest. If the player is
in the town or wilderness the stairs will go down. If the player is
on a quest level or at the bottom of a dungeon, the stairs will go up.
Otherwise there is an even chance the stairs will go up or down.

----------------------------------------------------------------------

#####R=== wall_stone ===

#####GDeclaration
    extern bool wall_stone(void);

#####GFile
    spells2.c

#####GComment
(none)

#####GDescription
Create a stone wall on the player's grid. This function uses the
project() function to create the stone wall. Apparently zero can be
used as the "who" parameter for the player. See details for the
project() function elsewhere in this document.

----------------------------------------------------------------------

#####R=== create_artifact ===

#####GDeclaration
    extern bool create_artifact(object_type *o_ptr,
        bool a_scroll, bool get_name);

#####GFile
    randart.c

#####GComment
(none)

#####GDescription
Create an artifact from object "*optr".

#####GParameters
> "*optr* is a pointer to an object
> "a_scroll" is true if the artifact is created by reading a scroll
> "get_name" is true if the artifact is to be named by the player (if
  a_scroll is true) or created randomly (a_scroll is false), or false
  if an inscription is used.

----------------------------------------------------------------------

#####R=== ident_spell ===

#####GDeclaration
    extern bool ident_spell(void);

#####GFile
    spells2.c

#####GComment
/*
 * Identify an object in the inventory (or on the floor)
 * This routine does *not* automatically combine objects.
 * Returns TRUE if something was identified, else FALSE.
 */

#####GDescription
Identify an object in the inventory (or on the floor).

----------------------------------------------------------------------

#####R=== identify_fully ===

#####GDeclaration
    extern bool identify_fully(void);

#####GFile
    spells2.c

#####GComment
/*
 * Fully "identify" an object in the inventory  -BEN-
 * This routine returns TRUE if an item was identified.
 */

#####GDescription
Fully "identify" an object in the inventory (or on the floor).

----------------------------------------------------------------------

#####R=== recharge ===

#####GDeclaration
    extern bool recharge(int num);

#####GFile
    spells2.c

#####GComment
/*
 * Recharge a wand/staff/rod from the pack or on the floor.
 * This function has been rewritten in Oangband. -LM-
 *
 * Mage -- Recharge I --> recharge(90)
 * Mage -- Recharge II --> recharge(150)
 * Mage -- Recharge III --> recharge(220)
 *
 * Priest or Necromancer -- Recharge --> recharge(140)
 *
 * Scroll of recharging --> recharge(130)
 * Scroll of *recharging* --> recharge(200)
 *
 * It is harder to recharge high level, and highly charged wands,
 * staffs, and rods.  The more wands in a stack, the more easily and
 * strongly they recharge.  Staffs, however, each get fewer charges if
 * stacked.
 *
 * XXX XXX XXX Beware of "sliding index errors".
 */

#####GDescription
Recharge an object in the inventory (or on the floor) with "num"
power.

#####GParameters
> "num" is the power used in recharging. It is compared to the
  object's level to determine whether the item is recharged
  successfully or destroyed. If it is recharged, it also determines
  how many charges are added, or how much recharge time is reduced.

----------------------------------------------------------------------

#####R=== aggravate_monsters ===

#####GDeclaration
    extern void aggravate_monsters(int who);

#####GFile
    spells2.c

#####GComment
/*
 * Wake up all monsters, and speed up "los" monsters.
 */

#####GDescription
Aggravate monsters, originating from "who".

#####GParameters
> "who" is the index of monster in m_list[] (1 if it is the player)
  which triggers the aggravation;

----------------------------------------------------------------------

#####R=== genocide ===

#####GDeclaration
    extern bool genocide(bool player_cast);

#####GFile
    spells2.c

#####GComment
(none)

#####GDescription
Genocide a monster race.

#####GParameters
> "player_cast" is true if the player cast the spell so the player can
  take damage.

----------------------------------------------------------------------

#####R=== mass_genocide ===

#####GDeclaration
    extern bool mass_genocide(bool player_cast);

#####GFile
    spells2.c

#####GComment
/*
 * Delete all nearby (non-unique) monsters
 */

#####GDescription
Delete all nearby (non-unique) monsters.

#####GParameters
> "player_cast" is true if the player cast the spell so the player can
  take damage.

----------------------------------------------------------------------

#####R=== probing ===

#####GDeclaration
    extern bool probing(void);

#####GFile
    spells2.c

#####GComment
/*
 * Probe nearby monsters
 */

#####GDescription
Probe all nearby monsters.

----------------------------------------------------------------------

#####R=== banish_evil ===

#####GDeclaration
    extern bool banish_evil(int dist);

#####GFile
    spells2.c

#####GComment
/*
 * Banish evil monsters
 */

#####GDescription
Banish nearby evil monsters doing "dist" points of GF_AWAY_EVIL
damage.

#####GParameters
> "dist" is the amount of damage done to each monster.

----------------------------------------------------------------------

#####R=== dispel_evil ===

#####GDeclaration
    extern bool dispel_evil(int dam);

#####GFile
    spells2.c

#####GComment
/*
 * Dispel evil monsters
 */

#####GDescription
Dispel nearby evil monsters doing "dam" points of GF_DISP_EVIL
damage.

#####GParameters
> "dam" is the number of points of damage.

----------------------------------------------------------------------

#####R=== dispel_good ===

#####GDeclaration
    extern bool dispel_good(int dam);

#####GFile
    spells2.c

#####GComment
/*
 * Dispel good monsters
 */

#####GDescription
Dispel nearby good monsters doing "dam" points of GF_DISP_GOOD
damage.

#####GParameters
> "dam" is the number of points of damage.

----------------------------------------------------------------------

#####R=== dispel_undead ===

#####GDeclaration
    extern bool dispel_undead(int dam);

#####GFile
    spells2.c

#####GComment
/*
 * Dispel undead monsters
 */

#####GDescription
Dispel nearby undead monsters doing "dam" points of GF_DISP_UNDEAD
damage.

#####GParameters
> "dam" is the number of points of damage.

----------------------------------------------------------------------

#####R=== dispel_monsters ===

#####GDeclaration
    extern bool dispel_monsters(int dam);

#####GFile
    spells2.c

#####GComment
/*
 * Dispel all monsters
 */

#####GDescription
Dispel all nearby monsters doing "dam" points of GF_DISP_ALL
damage.

#####GParameters
> "dam" is the number of points of damage.

----------------------------------------------------------------------

#####R=== dispel_living ===

#####GDeclaration
    extern bool dispel_living(int dam);

#####GFile
    spells2.c

#####GComment
/*
 * Dispel 'living' monsters
 */

#####GDescription
Dispel nearby living monsters doing "dam" points of GF_DISP_LIVING
damage.

#####GParameters
> "dam" is the number of points of damage.

----------------------------------------------------------------------

#####R=== dispel_demons ===

#####GDeclaration
    extern bool dispel_demons(int dam);

#####GFile
    spells2.c

#####GComment
/*
 * Dispel demons
 */

#####GDescription
Dispel nearby demon monsters doing "dam" points of GF_DISP_DEMON
damage.

#####GParameters
> "dam" is the number of points of damage.

----------------------------------------------------------------------

#####R=== turn_undead ===

#####GDeclaration
    extern bool turn_undead(void);

#####GFile
    spells2.c

#####GComment
/*
 * Turn undead
 */

#####GDescription
Turn nearby undead monsters doing a point of GF_TURN_UNDEAD damage for
each player level.

----------------------------------------------------------------------

#####R=== wipe ===

#####GDeclaration
    extern void wipe(int y1, int x1, int r);

#####GFile
    spells2.c

#####GComment
/*
 * Wipe -- Empties a part of the dungeon
 */

#####GDescription
Delete monsters and objects from an area of the dungeon centred at
grid "y1,x1" for a radius "r". This does not work on special levels or
quests. The player may be blinded. The player forgets the affected
area and it becomes dark. All grids become floor.

#####GParameters
> "y1" is the y-coordinate of the wipe's origin.
> "x1" is the x-coordinate of the wipe's origin.
> "r" is the radius of the wipe.

----------------------------------------------------------------------

#####R=== destroy_area ===

#####GDeclaration
    extern void destroy_area(int y1, int x1, int r,
        bool full);

#####GFile
    spells2.c

#####GComment
/*
 * The spell of destruction
 *
 * This spell "deletes" monsters (instead of "killing" them).
 *
 * Later we may use one function for both "destruction" and
 * "earthquake" by using the "full" to select "destruction".
 */

#####GDescription
Delete monsters and objects from an area of the dungeon centred at
grid "y1,x1" for a radius "r". This does not work on special levels or
quests. The epicentre is NOT affected. The player may be blinded. The
player forgets the affected area and it becomes dark. The grids can
become granite, quartz, magma, or floor.

#####GParameters
> "y1" is the y-coordinate of the destruction's origin.
> "x1" is the x-coordinate of the destruction's origin.
> "r" is the radius of the destruction.
> "full" is currently unused.

----------------------------------------------------------------------

#####R=== earthquake ===

#####GDeclaration
    extern void earthquake(int cy, int cx, int r);

#####GFile
    spells2.c

#####GComment
/*
 * Induce an "earthquake" of the given radius at the given location.
 *
 * This will turn some walls into floors and some floors into walls.
 *
 * The player will take damage and "jump" into a safe grid if possible,
 * otherwise, he will "tunnel" through the rubble instantaneously.
 *
 * Monsters will take damage, and "jump" into a safe grid if possible,
 * otherwise they will be "buried" in the rubble, disappearing from
 * the level in the same way that they do when genocided.
 *
 * Note that thus the player and monsters (except eaters of walls and
 * passers through walls) will never occupy the same grid as a wall.
 * Note that as of now (2.7.8) no monster may occupy a "wall" grid, even
 * for a single turn, unless that monster can pass_walls or kill_walls.
 * This has allowed massive simplification of the "monster" code.
 */

#####GDescription
Create an earthquake centred on grid "cy,cx" with a radius of "r".
This does not work on quest levels. The epicentre is NOT affected.
Only about 15% of the grids are affected. The player takes 300 points
of damage if they can't be moved to a safe grid, otherwise damage is
from 10 to 40 points. The player forgets the affected area and it
becomes dark. The grids can become granite, quartz, magma, or floor.

#####GParameters
Parameters:
> "cy" is the y-coordinate of the earthquake origin.
> "cx" is the x-coordinate of the earthquake origin.
> "r" is the radius of the earthquake.

----------------------------------------------------------------------

#####R=== map_area ===

#####GDeclaration
    extern void map_area(void);

#####GFile
    cave.c

#####GComment
/*
 * Hack -- map the current panel (plus some) ala "magic mapping"
 */

#####GDescription
Map the current panel plus up to 10 grids up and down, and up to 20
grids left and right.

----------------------------------------------------------------------

#####R=== wiz_lite ===

#####GDeclaration
    extern void wiz_lite(void);

#####GFile
    cave.c

#####GComment
/*
 * Light up the dungeon using "clairvoyance"
 *
 * This function "illuminates" every grid in the dungeon, memorises all
 * "objects", memorises all grids as with magic mapping, and, under the
 * standard option settings (view_perma_grids but not view_torch_grids)
 * memorises all floor grids too.
 *
 * Note that if "view_perma_grids" is not set, we do not memorise floor
 * grids, since this would defeat the purpose of "view_perma_grids", not
 * that anyone seems to play without this option.
 *
 * Note that if "view_torch_grids" is set, we do not memorise floor grids,
 * since this would prevent the use of "view_torch_grids" as a method to
 * keep track of what grids have been observed directly.
 */

#####GDescription
Light up the entire dungeon and show all monsters and objects.

----------------------------------------------------------------------

#####R=== wiz_lite_extra ===

#####GDeclaration
    extern void wiz_lite_extra(void);

#####GFile
    cave.c

#####GComment
(none)

#####GDescription
Light up the entire dungeon and show all monsters and objects. All
squares are lit and remembered.

----------------------------------------------------------------------

#####R=== wiz_dark ===

#####GDeclaration
    extern void wiz_dark(void);

#####GFile
    cave.c

#####GComment
/*
 * Forget the dungeon map (ala "Thinking of Maud...").
 */

#####GDescription
Forget all grids and objects. All grids become dark.

----------------------------------------------------------------------

#####R=== lite_room ===

#####GDeclaration
    extern void lite_room(int y1, int x1);

#####GFile
    spells2.c

#####GComment
/*
 * Illuminate any room containing the given location.
 */

#####GDescription
Light up the room (if any) of grid "y1,x1".

#####GParameters
> "y1" is the y-coordinate of the grid.
> "x1" is the x-coordinate of the grid.

----------------------------------------------------------------------

#####R=== unlite_room ===

#####GDeclaration
    extern void unlite_room(int y1, int x1);

#####GFile
    spells2.c

#####GComment
/*
 * Darken all rooms containing the given location
 */

#####GDescription
Darken all rooms (if any) of grid "y1,x1".

#####GParameters
> "y1" is the y-coordinate of the grid.
> "x1" is the x-coordinate of the grid.

----------------------------------------------------------------------

#####R=== lite_area ===

#####GDeclaration
    extern bool lite_area(int dam, int rad);

#####GFile
    spells2.c

#####GComment
/*
 * Hack -- call light around the player
 * Affect all monsters in the projection radius
 */

#####GDescription
Light up the room (if any) of the player's grid. Monsters take "dam"
points of GF_LITE_WEAK damage if they are within "r" grids of the
player.

#####GParameters
> "dam" is the number of points of damage.
> "rad" is the radius of the effect of the damage.

----------------------------------------------------------------------

#####R=== unlite_area ===

#####GDeclaration
    extern bool unlite_area(int dam, int rad);

#####GFile
    spells2.c

#####GComment
/*
 * Hack -- call darkness around the player
 * Affect all monsters in the projection radius
 */

#####GDescription
Darken the room (if any) of the player's grid. Monsters take "dam"
points of GF_DARK_WEAK damage if they are within "r" grids of the
player.

#####GParameters
> "dam" is the number of points of damage.
> "rad" is the radius of the effect of the damage.

----------------------------------------------------------------------

#####R=== fire_ball_beam ===

#####GDeclaration
    extern bool fire_ball_beam(int typ, int dir, int dam,
        int rad);

#####GFile
    spells2.c

#####GComment
/*
 * Cast a ball-beamed spell
 * Stop if we hit a monster, act as a "ball"
 * Allow "target" mode to pass over monsters
 * Affect grids, objects, and monsters
 */

#####GDescription
Cast a ball-beamed spell of type "typ" in direction "dir" for damage
"dam" points with a radius of "rad" grids.

#####GParameters
> "typ" is the type of damage
  *****fields.txt*0[GF_fields]
> "dir" must be from 0 to 9.
  *****fields.txt*0[direction]
> "dam" is the number of points of damage.
> "rad" is the radius of the effect of the damage (must be <= 16).

----------------------------------------------------------------------

#####R=== fire_ball ===

#####GDeclaration
    extern bool fire_ball(int typ, int dir, int dam, int rad);

#####GFile
    spells2.c

#####GComment
/*
 * Cast a ball spell
 * Stop if we hit a monster, act as a "ball"
 * Allow "target" mode to pass over monsters
 * Affect grids, objects, and monsters
 */

#####GDescription
Cast a ball spell of type "typ" in direction "dir" for "dam" points of
damage. The ball has a radius of "rad" grids.

#####GParameters
> "typ" is the type of damage
  *****fields.txt*0[GF_fields]
> "dir" must be from 0 to 9.
  *****fields.txt*0[direction]
> "dam" is the number of points of damage.
> "rad" is the radius of the effect of the damage (must be <= 16).

----------------------------------------------------------------------

#####R=== fire_bolt ===

#####GDeclaration
    extern bool fire_bolt(int typ, int dir, int dam);

#####GFile
    spells2.c

#####GComment
/*
 * Cast a bolt spell
 * Stop if we hit a monster, as a "bolt"
 * Affect monsters (not grids or objects)
 */

#####GDescription
Cast a bolt spell of type "typ" in direction "dir" for "dam" points of
damage.

#####GParameters
> "typ" is the type of damage
  *****fields.txt*0[GF_fields]
> "dir" must be from 0 to 9
  *****fields.txt*0[direction]
> "dam" is the number of points of damage.

----------------------------------------------------------------------

#####R=== fire_beam ===

#####GDeclaration
    extern bool fire_beam(int typ, int dir, int dam);

#####GFile
    spells2.c

#####GComment
/*
 * Cast a beam spell
 * Pass through monsters, as a "beam"
 * Affect monsters (not grids or objects)
 */

#####GDescription
Cast a beam spell of type "typ" in direction "dir" for "dam" points of
damage.

#####GParameters
> "typ" is the type of damage
  *****fields.txt*0[GF_fields]
> "dir" must be from 0 to 9.
  *****fields.txt*0[direction]
> "dam" is the number of points of damage.

----------------------------------------------------------------------

#####R=== fire_druid_ball ===

#####GDeclaration
    extern bool fire_druid_ball(int typ, int dir, int dam,
        int rad);

#####GFile
    spells2.c

#####GComment
/*
 * Cast a druidic ball spell
 * Stop if we hit a monster, act as a "ball"
 * Allow "target" mode to pass over monsters
 * Affect grids, objects, and monsters
 */

#####GDescription
Cast a ball spell of type "typ" in direction "dir" for "dam" points of
damage. The ball has a radius of "rad" grids. The spell follows a mana
path.

#####GParameters
> "typ" is the type of damage
  *****fields.txt*0[GF_fields]
> "dir" must be from 0 to 9.
  *****fields.txt*0[direction]
> "dam" is the number of points of damage.
> "rad" is the radius of the effect of the damage (must be <= 16).

----------------------------------------------------------------------

#####R=== fire_druid_bolt ===

#####GDeclaration
    extern bool fire_druid_bolt(int typ, int dir, int dam);

#####GFile
    spells2.c

#####GComment
/*
 * Cast a druidic bolt spell
 * Stop if we hit a monster, as a "bolt"
 * Affect monsters (not grids or objects)
 */

#####GDescription
Cast a bolt spell of type "typ" in direction "dir" for "dam" points of
damage. The spell follows a mana path.

#####GParameters
> "typ" is the type of damage
  *****fields.txt*0[GF_fields]
> "dir" must be from 0 to 9.
  *****fields.txt*0[direction]
> "dam" is the number of points of damage.

----------------------------------------------------------------------

#####R=== fire_druid_beam ===

#####GDeclaration
    extern bool fire_druid_beam(int typ, int dir, int dam);

#####GFile
    spells2.c

#####GComment
/*
 * Cast a druidistic beam spell
 * Pass through monsters, as a "beam"
 * Affect monsters (not grids or objects)
 */

#####GDescription
Cast a beam spell of type "typ" in direction "dir" for "dam" points of
damage. The spell follows a mana path.

#####GParameters
> "typ" is the type of damage
  *****fields.txt*0[GF_fields]
> "dir" must be from 0 to 9.
  *****fields.txt*0[direction]
> "dam" is the number of points of damage.

----------------------------------------------------------------------

#####R=== fire_bolt_or_beam ===

#####GDeclaration
    extern bool fire_bolt_or_beam(int prob, int typ, int dir,
        int dam);

#####GFile
    spells2.c

#####GComment
/*
 * Cast a bolt spell, or rarely, a beam spell
 */

#####GDescription
Cast a beam (chance of "prob" in 100) or bolt spell of type "typ" in
direction "dir" for "dam" points of damage.

#####GParameters
> "prob" is the number of times out of 100 that the bolt will actually
  be a beam. Obviously this value should range from 1 to 99 (0 will
  always give a beam, 100 or higher will always give a beam. There are
  separate functions for these cases).
> "typ" is the type of damage
  *****fields.txt*0[GF_fields]
> "dir" must be from 0 to 9.
  *****fields.txt*0[direction]
> "dam" is the number of points of damage.

----------------------------------------------------------------------

#####R=== alchemy ===

#####GDeclaration
    extern bool alchemy(void);

#####GFile
    spells2.c

#####GComment
/* Turns an object into gold, gain some of its value in a shop */

#####GDescription
The player selects an object (and quantity if it applies) from the
inventory or the floor and attempts to turn it into gold. If the
price of the item is < 0 then the player gains nothing (fool's gold),
otherwise the player gets a third of the price in gold. Artifacts are
not affected.

----------------------------------------------------------------------

#####R=== alter_reality ===

#####GDeclaration
    extern void alter_reality(void);

#####GFile
    spells2.c

#####GComment
(none)

#####GDescription
The player leaves the level immediately.

----------------------------------------------------------------------

#####R=== teleport_swap ===

#####GDeclaration
    extern void teleport_swap(int dir);

#####GFile
    spells2.c

#####GComment
(none)

#####GDescription
Player swaps places with target in direction "dir". The target must be
a monster. It will not work if the space-time continuum can not be
disrupted or if the monster resists teleportation.

----------------------------------------------------------------------

#####R=== project_meteor ===

#####GDeclaration
    extern void project_meteor(int radius, int typ, int dam,
        u32b flg);

#####GFile
    spells2.c

#####GComment
/*
 * Apply a "project()" a la meteor shower
 */

#####GDescription
Generate between "rad" and "rad" x 2 ball spells of type "typ" for
"dam" points of damage. The ball can have various properties as
denoted by "flg".

#####GParameters
> "rad" is the minimum number of balls created. "rad" + randint("rad")
  balls are created. Each ball has a radius of 2 grids. Each target
  grid is within 5 grids of the player.
> "typ" is the type of damage
  *****fields.txt*0[GF_fields]
> "dam" is the number of points of damage.
> "flg" is the projection effect
  *****fields.txt*0[PROJECT_fields]

----------------------------------------------------------------------

#####R=== passwall ===

#####GDeclaration
    extern bool passwall(int dir, bool safe);

#####GFile
    spells2.c

#####GComment
/*
 * Send the player shooting through walls in the given direction until
 * they reach a non-wall space, or a monster, or a permanent wall.
 */

#####GDescription
Move the player through walls in direction "dir". if "safe" then the
player can not end up in a wall - if they do, the wall is replaced by
a floor. This does not work in the wilderness, on quest levels, or if
teleport is not allowed. Stopping on monsters or inside vaults is not
allowed.

#####GParameters
> "dir" must be from 0 to 9. It can not be 5.
  *****fields.txt*0[direction]
> "safe" must be true if the player is not to be trapped in a wall
  when the movement is finished.

----------------------------------------------------------------------

#####R=== project_hook ===

#####GDeclaration
    extern bool project_hook(int typ, int dir, int dam,
        int flg);

#####GFile
    spells2.c

#####GComment
/*
 * Hack -- apply a "projection()" in a direction (or at the target)
 */

#####GDescription
Generate a beam/bolt of type "typ" in direction "dir" (or at a target)
for "dam" points of damage. The beam/bolt can have various properties
as denoted by "flg".

#####GParameters
> "typ" is the type of damage
  *****fields.txt*0[GF_fields]
> "dir" must be from 0 to 9. 5 means use the current target.
  *****fields.txt*0[direction]
> "dam" is the number of points of damage.
> "flg" is the projection effect
  *****fields.txt*0[PROJECT_fields]

----------------------------------------------------------------------

#####R=== reset_recall ===

#####GDeclaration
    extern bool reset_recall(void);

#####GFile
    spells2.c

#####GComment
(none)

#####GDescription
Ask the player for a dungeon and appropriate level within the dungeon.
The player can not specify a dungeon they have not gone to yet. If the
player chooses levels 99 or 100, the level is set to 98.

----------------------------------------------------------------------

#####R=== get_aim_dir ===

#####GDeclaration
    extern bool get_aim_dir(int *dp = 0);

#####GFile
    xtra2.c

#####GComment
/*
 * Get an "aiming direction" from the user.
 *
 * The "dir" is loaded with 1,2,3,4,6,7,8,9 for "actual direction", and
 * "0" for "current target", and "-1" for "entry aborted".
 *
 * Note that "Force Target", if set, will pre-empt user interaction,
 * if there is a usable target already set.
 *
 * Note that confusion over-rides any (explicit?) user choice.
 */

#####GDescription
Get an aiming direction from the user and store it in "dp". A target
can be selected. If the player is confused, the direction will be
random.

#####GParameters
> "dp" = player direction.

----------------------------------------------------------------------

#####R=== project_hack ===

#####GDeclaration
    extern bool project_hack(int typ, int dam);

#####GFile
    spells2.c

#####GComment
/*
 * Apply a "project()" directly to all viewable monsters
 *
 * Note that affected monsters are NOT auto-tracked by this usage.
 */

#####GDescription
Generate beam/bolt spells of type "typ" for "dam" points of damage to
all viewable monsters in line of site.

#####GParameters
> "typ" is the type of damage
  *****fields.txt*0[GF_fields]
> "dam" is the number of points of damage.

----------------------------------------------------------------------


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                                                     [[[[[gThis file by Chris Hadgis]