/**
* @file dg_scripts.h
* Header file for script structures, constants, and function prototypes for 
* dg_scripts.c
* 
* Part of the core tbaMUD source code distribution, which is a derivative
* of, and continuation of, CircleMUD.
* 
* This source code, which was not part of the CircleMUD legacy code,
* was created by the following people:                                      
* $Author: Mark A. Heilpern/egreen/Welcor $                              
* $Date: 2004/10/11 12:07:00$                                            
* $Revision: 1.0.14 $                                                    
*/
#ifndef _DG_SCRIPTS_H_
#define _DG_SCRIPTS_H_

#include "utils.h" /* To make sure ACMD is defined */

#define    MOB_TRIGGER   0
#define    OBJ_TRIGGER   1
#define    WLD_TRIGGER   2

/* unless you change this, Puff casts all your dg spells */
#define DG_CASTER_PROXY 1
/* spells cast by objects and rooms use this level */
#define DG_SPELL_LEVEL  25

/* Define this if you don't want wear/remove triggers to fire when a player 
 * is saved. */
#define NO_EXTRANEOUS_TRIGGERS

/* %actor.room% behaviour :
 * Until pl 7 %actor.room% returned a room vnum. Working with this number in 
 * scripts was unnecessarily hard, especially in those situations one needed 
 * the id of the room, the items in it, etc. As a result of this, the output
 * has been changed (as of pl 8) to a room variable.i This means old scripts 
 * will need a minor adjustment;
 *
 * Before:
 * if %actor.room%==3001
 *   %echo% You are at the main temple.
 *
 * After:
 * eval room %actor.room%
 * if %room.vnum%==3001
 *   %echo% You are at the main temple.
 *
 * If you wish to continue using the old style, comment out the line below.
 * - Welcor */
#define ACTOR_ROOM_IS_UID 1

/* mob trigger types */
#define MTRIG_GLOBAL           (1 << 0)      /* check even if zone empty   */
#define MTRIG_RANDOM           (1 << 1)      /* checked randomly           */
#define MTRIG_COMMAND          (1 << 2)	     /* character types a command  */
#define MTRIG_SPEECH           (1 << 3)	     /* a char says a word/phrase  */
#define MTRIG_ACT              (1 << 4)      /* word or phrase sent to act */
#define MTRIG_DEATH            (1 << 5)      /* character dies             */
#define MTRIG_GREET            (1 << 6)      /* something enters room seen */
#define MTRIG_GREET_ALL        (1 << 7)      /* anything enters room       */
#define MTRIG_ENTRY            (1 << 8)      /* the mob enters a room      */
#define MTRIG_RECEIVE          (1 << 9)      /* character is given obj     */
#define MTRIG_FIGHT            (1 << 10)     /* each pulse while fighting  */
#define MTRIG_HITPRCNT         (1 << 11)     /* fighting and below some hp */
#define MTRIG_BRIBE	       (1 << 12)     /* coins are given to mob     */
#define MTRIG_LOAD             (1 << 13)     /* the mob is loaded          */
#define MTRIG_MEMORY           (1 << 14)     /* mob see's someone remembered */
#define MTRIG_CAST             (1 << 15)     /* mob targetted by spell     */
#define MTRIG_LEAVE            (1 << 16)     /* someone leaves room seen   */
#define MTRIG_DOOR             (1 << 17)     /* door manipulated in room   */

#define MTRIG_TIME             (1 << 19)     /* trigger based on game hour */

/* obj trigger types */
#define OTRIG_GLOBAL           (1 << 0)	     /* unused                     */
#define OTRIG_RANDOM           (1 << 1)	     /* checked randomly           */
#define OTRIG_COMMAND          (1 << 2)      /* character types a command  */

#define OTRIG_TIMER            (1 << 5)     /* item's timer expires       */
#define OTRIG_GET              (1 << 6)     /* item is picked up          */
#define OTRIG_DROP             (1 << 7)     /* character trys to drop obj */
#define OTRIG_GIVE             (1 << 8)     /* character trys to give obj */
#define OTRIG_WEAR             (1 << 9)     /* character trys to wear obj */
#define OTRIG_REMOVE           (1 << 11)    /* character trys to remove obj */

#define OTRIG_LOAD             (1 << 13)    /* the object is loaded        */

#define OTRIG_CAST             (1 << 15)    /* object targetted by spell   */
#define OTRIG_LEAVE            (1 << 16)    /* someone leaves room seen    */

#define OTRIG_CONSUME          (1 << 18)    /* char tries to eat/drink obj */
#define OTRIG_TIME             (1 << 19)     /* trigger based on game hour */

/* wld trigger types */
#define WTRIG_GLOBAL           (1 << 0)      /* check even if zone empty   */
#define WTRIG_RANDOM           (1 << 1)	     /* checked randomly           */
#define WTRIG_COMMAND          (1 << 2)	     /* character types a command  */
#define WTRIG_SPEECH           (1 << 3)      /* a char says word/phrase    */

#define WTRIG_RESET            (1 << 5)      /* zone has been reset        */
#define WTRIG_ENTER            (1 << 6)	     /* character enters room      */
#define WTRIG_DROP             (1 << 7)      /* something dropped in room  */

#define WTRIG_CAST             (1 << 15)     /* spell cast in room */
#define WTRIG_LEAVE            (1 << 16)     /* character leaves the room */
#define WTRIG_DOOR             (1 << 17)     /* door manipulated in room  */

#define WTRIG_TIME             (1 << 19)     /* trigger based on game hour */
/* obj command trigger types */
#define OCMD_EQUIP             (1 << 0)	     /* obj must be in char's equip */
#define OCMD_INVEN             (1 << 1)	     /* obj must be in char's inven */
#define OCMD_ROOM              (1 << 2)	     /* obj must be in char's room  */

/* obj consume trigger commands */
#define OCMD_EAT    1
#define OCMD_DRINK  2
#define OCMD_QUAFF  3

#define TRIG_NEW                0	     /* trigger starts from top  */
#define TRIG_RESTART            1	     /* trigger restarting       */

/* These are slightly off of PULSE_MOBILE so everything isnt happening at the 
 * same time. */
#define PULSE_DG_SCRIPT         (13 RL_SEC)

#define MAX_SCRIPT_DEPTH      10          /* maximum depth triggers can
					     recurse into each other */

#define SCRIPT_ERROR_CODE     -9999999   /* this shouldn't happen too often */

/* one line of the trigger */
struct cmdlist_element {
  char *cmd;				/* one line of a trigger */
  struct cmdlist_element *original;
  struct cmdlist_element *next;
};

struct trig_var_data {
  char *name;				/* name of variable  */
  char *value;				/* value of variable */
  long context;				/* 0: global context */

  struct trig_var_data *next;
};

/** structure for triggers */
struct trig_data {
    IDXTYPE nr;                         /**< trigger's rnum                  */
    byte attach_type;                   /**< mob/obj/wld intentions          */
    byte data_type;                     /**< type of game_data for trig      */
    char *name;                         /**< name of trigger                 */
    long trigger_type;                  /**< type of trigger (for bitvector) */
    struct cmdlist_element *cmdlist;    /**< top of command list             */
    struct cmdlist_element *curr_state;	/**< ptr to current line of trigger  */
    int narg;                           /**< numerical argument              */
    char *arglist;                      /**< argument list                   */
    int depth;                          /**< depth into nest ifs/whiles/etc  */
    int loops;                          /**< loop iteration counter          */
    struct event *wait_event;           /**< event to pause the trigger  */
    ubyte purged;                       /**< trigger is set to be purged     */
    struct trig_var_data *var_list;	    /**< list of local vars for trigger  */

    struct trig_data *next;
    struct trig_data *next_in_world;    /**< next in the global trigger list */
};

/** a complete script (composed of several triggers) */
struct script_data {
  long types;                        /**< bitvector of trigger types */
  struct trig_data *trig_list;       /**< list of triggers           */
  struct trig_var_data *global_vars; /**< list of global variables   */
  ubyte purged;                      /**< script is set to be purged */
  long context;                      /**< current context for statics */

  struct script_data *next;          /**< used for purged_scripts    */
};

/* The event data for the wait command */
struct wait_event_data {
  struct trig_data *trigger;
  void *go;
  int type;
};

/* used for actor memory triggers */
struct script_memory {
  long id;        /* id of who to remember */
  char *cmd;        /* command, or NULL for generic */
  struct script_memory *next;
};

/* typedefs that the dg functions rely on */
typedef struct index_data index_data;
typedef struct room_data room_data;
typedef struct obj_data obj_data;
typedef struct trig_data trig_data;
typedef struct char_data char_data;


/* function prototypes from dg_triggers.c */
char *one_phrase(char *arg, char *first_arg);
int is_substring(char *sub, char *string);
int word_check(char *str, char *wordlist);

void act_mtrigger(const char_data *ch, char *str,
	char_data *actor, char_data *victim, obj_data *object, obj_data *target, char *arg);
void speech_mtrigger(char_data *actor, char *str);
void speech_wtrigger(char_data *actor, char *str);
void greet_memory_mtrigger(char_data *ch);
int greet_mtrigger(char_data *actor, int dir);
int entry_mtrigger(char_data *ch);
void entry_memory_mtrigger(char_data *ch);
int enter_wtrigger(room_data *room, char_data *actor, int dir);
int drop_otrigger(obj_data *obj, char_data *actor);
void timer_otrigger(obj_data *obj);
int get_otrigger(obj_data *obj, char_data *actor);
int drop_wtrigger(obj_data *obj, char_data *actor);
int give_otrigger(obj_data *obj, char_data *actor,
         char_data *victim);
int receive_mtrigger(char_data *ch, char_data *actor,
         obj_data *obj);
void bribe_mtrigger(char_data *ch, char_data *actor,
         int amount);
int wear_otrigger(obj_data *obj, char_data *actor, int where);
int remove_otrigger(obj_data *obj, char_data *actor);

int cmd_otrig(obj_data *obj, char_data *actor, char *cmd,
              char *argument, int type);
int command_mtrigger(char_data *actor, char *cmd, char *argument);
int command_otrigger(char_data *actor, char *cmd, char *argument);
int command_wtrigger(char_data *actor, char *cmd, char *argument);

int death_mtrigger(char_data *ch, char_data *actor);
void fight_mtrigger(char_data *ch);
void hitprcnt_mtrigger(char_data *ch);

void random_mtrigger(char_data *ch);
void random_otrigger(obj_data *obj);
void random_wtrigger(room_data *ch);
void reset_wtrigger(room_data *ch);

void load_mtrigger(char_data *ch);
void load_otrigger(obj_data *obj);

int cast_mtrigger(char_data *actor, char_data *ch, int spellnum);
int cast_otrigger(char_data *actor, obj_data *obj, int spellnum);
int cast_wtrigger(char_data *actor, char_data *vict, obj_data *obj, int spellnum);

int leave_mtrigger(char_data *actor, int dir);
int leave_wtrigger(room_data *room, char_data *actor, int dir);
int leave_otrigger(room_data *room, char_data *actor, int dir);

int door_mtrigger(char_data *actor, int subcmd, int dir);
int door_wtrigger(char_data *actor, int subcmd, int dir);

int consume_otrigger(obj_data *obj, char_data *actor, int cmd);

void time_mtrigger(char_data *ch);
void time_otrigger(obj_data *obj);
void time_wtrigger(room_data *room);

/* function prototypes from dg_scripts.c */
ACMD(do_attach) ;
ACMD(do_detach);
ACMD(do_vdelete);
ACMD(do_tstat);
char *str_str(char *cs, char *ct);
int find_eq_pos_script(char *arg);
int can_wear_on_pos(struct obj_data *obj, int pos);
struct char_data *find_char(long n);
char_data *get_char(char *name);
char_data *get_char_near_obj(obj_data *obj, char *name);
char_data *get_char_in_room(room_data *room, char *name);
obj_data *get_obj_near_obj(obj_data *obj, char *name);
obj_data *get_obj(char *name);
room_data *get_room(char *name);
char_data *get_char_by_obj(obj_data *obj, char *name);
char_data *get_char_by_room(room_data *room, char *name);
obj_data *get_obj_by_obj(obj_data *obj, char *name);
obj_data *get_obj_in_room(room_data *room, char *name);
obj_data *get_obj_by_room(room_data *room, char *name);
int trgvar_in_room(room_vnum vnum);
obj_data *get_obj_in_list(char *name, obj_data *list);
obj_data *get_object_in_equip(char_data * ch, char *name);
void script_trigger_check(void);
void check_time_triggers(void);
void find_uid_name(char *uid, char *name, size_t nlen);
void do_sstat_room(struct char_data * ch, room_data *r);
void do_sstat_object(char_data *ch, obj_data *j);
void do_sstat_character(char_data *ch, char_data *k);
void add_trigger(struct script_data *sc, trig_data *t, int loc);
void script_vlog(const char *format, va_list args);
void script_log(const char *format, ...) __attribute__ ((format (printf, 1, 2)));
char *matching_quote(char *p);
struct room_data *dg_room_of_obj(struct obj_data *obj);
bool check_flags_by_name_ar(int *array, int numflags, char *search, const char *namelist[]);
void read_saved_vars_ascii(FILE *file, struct char_data *ch, int count);
void save_char_vars_ascii(FILE *file, struct char_data *ch);
int perform_set_dg_var(struct char_data *ch, struct char_data *vict, char *val_arg);
int trig_is_attached(struct script_data *sc, int trig_num);

/* To maintain strict-aliasing we'll have to do this trick with a union */
/* Thanks to Chris Gilbert for reminding me that there are other options. */
int script_driver(void *go_adress, trig_data *trig, int type, int mode);
trig_rnum real_trigger(trig_vnum vnum);
void process_eval(void *go, struct script_data *sc, trig_data *trig,
                 int type, char *cmd);
void read_saved_vars(struct char_data *ch);
void save_char_vars(struct char_data *ch);
void init_lookup_table(void);
void add_to_lookup_table(long uid, void *c);
void remove_from_lookup_table(long uid);

/* from dg_db_scripts.c */
void parse_trigger(FILE *trig_f, int nr);
trig_data *read_trigger(int nr);
void trig_data_copy(trig_data *this_data, const trig_data *trg);
void dg_read_trigger(FILE *fp, void *proto, int type);
void dg_obj_trigger(char *line, struct obj_data *obj);
void assign_triggers(void *i, int type);

/* From dg_variables.c */
void add_var(struct trig_var_data **var_list, const char *name, const char *value, long id);
int item_in_list(char *item, obj_data *list);
char *skill_percent(struct char_data *ch, char *skill);
int char_has_item(char *item, struct char_data *ch);
void var_subst(void *go, struct script_data *sc, trig_data *trig,
               int type, char *line, char *buf);
int text_processed(char *field, char *subfield, struct trig_var_data *vd,
                   char *str, size_t slen);
void find_replacement(void *go, struct script_data *sc, trig_data *trig,
                int type, char *var, char *field, char *subfield, char *str, size_t slen);

/* From dg_handler.c */
void free_var_el(struct trig_var_data *var);
void free_varlist(struct trig_var_data *vd);
int remove_var(struct trig_var_data **var_list, char *name);
void free_trigger(trig_data *trig);
void extract_trigger(struct trig_data *trig);
void extract_script(void *thing, int type);
void extract_script_mem(struct script_memory *sc);
void free_proto_script(void *thing, int type);
void copy_proto_script(void *source, void *dest, int type);
void delete_variables(const char *charname);
void update_wait_events(struct room_data *to, struct room_data *from);

/* from dg_comm.c */
char *any_one_name(char *argument, char *first_arg);
void sub_write(char *arg, char_data *ch, byte find_invis, int targets);
void send_to_zone(char *messg, zone_rnum zone);

/* from dg_misc.c */
void do_dg_cast(void *go, struct script_data *sc, trig_data *trig,
    int type, char *cmd);
void do_dg_affect(void *go, struct script_data *sc, trig_data *trig,
    int type, char *cmd);
void send_char_pos(struct char_data *ch, int dam);
int valid_dg_target(char_data *ch, int bitvector);
void script_damage(char_data *vict, int dam);

/* from dg_mobcmd.c */
ACMD(do_masound);
ACMD(do_mat);
ACMD(do_mdamage);
ACMD(do_mdoor);
ACMD(do_mecho);
ACMD(do_mechoaround);
ACMD(do_mfollow);
ACMD(do_mforce);
ACMD(do_mforget);
ACMD(do_mgoto);
ACMD(do_mhunt);
ACMD(do_mjunk);
ACMD(do_mkill);
ACMD(do_mload);
ACMD(do_mpurge);
ACMD(do_mrecho);
ACMD(do_mremember);
ACMD(do_msend);
ACMD(do_mteleport);
ACMD(do_mtransform);
ACMD(do_mzoneecho);

/* from dg_olc.c... thinking these should be moved to oasis.h */
void trigedit_save(struct descriptor_data *d);
void trigedit_string_cleanup(struct descriptor_data *d, int terminator);
int format_script(struct descriptor_data *d);
void trigedit_setup_existing(struct descriptor_data *d, int rtrg_num);

/* from dg_objcmd.c */
room_rnum obj_room(obj_data *obj);
void obj_command_interpreter(obj_data *obj, char *argument);

/* from dg_wldcmd.c */
void wld_command_interpreter(room_data *room, char *argument);

/* defines for valid_dg_target */
#define DG_ALLOW_GODS (1<<0)

/* Macros for scripts */
#define UID_CHAR   '}'
#define GET_TRIG_NAME(t)          ((t)->name)
#define GET_TRIG_RNUM(t)          ((t)->nr)
#define GET_TRIG_VNUM(t)	  (trig_index[(t)->nr]->vnum)
#define GET_TRIG_TYPE(t)          ((t)->trigger_type)
#define GET_TRIG_DATA_TYPE(t)	  ((t)->data_type)
#define GET_TRIG_NARG(t)          ((t)->narg)
#define GET_TRIG_ARG(t)           ((t)->arglist)
#define GET_TRIG_VARS(t)	  ((t)->var_list)
#define GET_TRIG_WAIT(t)	  ((t)->wait_event)
#define GET_TRIG_DEPTH(t)         ((t)->depth)
#define GET_TRIG_LOOPS(t)         ((t)->loops)

/* player id's: 0 to MOB_ID_BASE - 1
 * mob id's: MOB_ID_BASE to ROOM_ID_BASE - 1
 * room id's: ROOM_ID_BASE to OBJ_ID_BASE - 1
 * object id's: OBJ_ID_BASE and higher */
#define MOB_ID_BASE	  50000  /* 50000 player IDNUMS should suffice */
#define ROOM_ID_BASE    1050000 /* 1000000 Mobs */
#define OBJ_ID_BASE     1300000 /* 250000 Rooms */

#define SCRIPT(o)		  ((o)->script)
#define SCRIPT_MEM(c)             ((c)->memory)

#define SCRIPT_TYPES(s)		  ((s)->types)
#define TRIGGERS(s)		  ((s)->trig_list)

#define GET_SHORT(ch)    ((ch)->player.short_descr)

#define SCRIPT_CHECK(go, type)   (SCRIPT(go) && \
				  IS_SET(SCRIPT_TYPES(SCRIPT(go)), type))
#define TRIGGER_CHECK(t, type)   (IS_SET(GET_TRIG_TYPE(t), type) && \
				  !GET_TRIG_DEPTH(t))

#define ADD_UID_VAR(buf, trig, go, name, context) do { \
		         sprintf(buf, "%c%ld", UID_CHAR, GET_ID(go)); \
                         add_var(&GET_TRIG_VARS(trig), name, buf, context); } while (0)

#endif /* _DG_SCRIPTS_H_ */
