/*
    daemon.c - functions for dealing with things that happen in the future
 
    UltraRogue: The Ultimate Adventure in the Dungeons of Doom
    Copyright (C) 1985, 1986, 1992, 1993, 1995 Herb Chong
    All rights reserved.

    Based on "Advanced Rogue"
    Copyright (C) 1984, 1985 Michael Morgan, Ken Dalka
    All rights reserved.

    Based on "Rogue: Exploring the Dungeons of Doom"
    Copyright (C) 1980, 1981 Michael Toy, Ken Arnold and Glenn Wichman
    All rights reserved.

    See the file LICENSE.TXT for full copyright and licensing information.
*/

/*
        Needs to be rewritten again to work on a per creature basis.
        Either each monster will have a list of effect, or each
        fuse will take a creature pointer and multiple entries
        for each fuse will be allowed. I tend to want to attach
        the effects to the creature.
*/

#include "rogue.h"

int demoncnt;

struct daemon daemons[DAEMON_MAX] =
{
    { DAEMON_NULL,       NULL         },
    { DAEMON_DOCTOR,     doctor       },
    { DAEMON_ROLLWAND,   rollwand     },
    { DAEMON_STOMACH,    stomach      },
    { DAEMON_RUNNERS,    runners      }
};

struct fuse fuses[FUSE_MAX] =
{
    { FUSE_NULL,         NULL         },
    { FUSE_SWANDER,      swander      },
    { FUSE_UNCONFUSE,    unconfuse    },
    { FUSE_UNSCENT,      unscent      },
    { FUSE_SCENT,        scent        },
    { FUSE_UNHEAR,       unhear       },
    { FUSE_HEAR,         hear         },
    { FUSE_UNSEE,        unsee        },
    { FUSE_UNSTINK,      unstink      },
    { FUSE_UNCLRHEAD,    unclrhead    },
    { FUSE_UNPHASE,      unphase      },
    { FUSE_SIGHT,        sight        },
    { FUSE_RES_STRENGTH, res_strength },
    { FUSE_NOHASTE,      nohaste      },
    { FUSE_NOSLOW,       noslow       },
    { FUSE_SUFFOCATE,    suffocate    },
    { FUSE_CURE_DISEASE, cure_disease },
    { FUSE_UNITCH,       un_itch      },
    { FUSE_APPEAR,       appear       },
    { FUSE_UNELECTRIFY,  unelectrify  },
    { FUSE_UNBHERO,      unbhero      },
    { FUSE_UNSHERO,      unshero      },
    { FUSE_UNXRAY,       NULL         },
    { FUSE_UNDISGUISE,   undisguise   },
    { FUSE_SHERO,        shero        },
    { FUSE_WGHTCHK,      wghtchk      },
    { FUSE_UNSUMMON,     unsummon     },
    { FUSE_UNGAZE,       ungaze       },
    { FUSE_UNCOLD,       uncold       },
    { FUSE_UNHOT,        unhot        },
    { FUSE_UNFLY,        unfly        },
    { FUSE_UNBREATHE,    unbreathe    },
    { FUSE_UNREGEN,      unregen      },
    { FUSE_UNSUPEREAT,   unsupereat   },
    { FUSE_UNSHIELD,     unshield     },
    { FUSE_UNMSHIELD,    unmshield    },
    { FUSE_UNTRUESEE,    untruesee    }
};

/*
    d_slot()
        Find an empty slot in the daemon/fuse list
*/

struct delayed_action *
d_slot(void)
{
    int i;
    struct delayed_action *dev;

    for (i = 0, dev = d_list; i < MAXDAEMONS; i++, dev++)
        if (dev->d_type == EMPTY)
            return(dev);

    return(NULL);
}


/*
     find_slot()
         Find a particular slot in the table
*/

struct delayed_action *
find_slot(int type, int id)
{
    int i;
    struct delayed_action *dev;

    for (i = 0, dev = d_list; i < MAXDAEMONS; i++, dev++)
        if ( (dev->d_type == type) && (id == dev->d_id) )
            return(dev);

    return(NULL);
}


/*
    daemon()
        Start a daemon, takes a function.
*/

void
start_daemon(int id, void *arg, int whendo)
{
    struct delayed_action *dev;

    dev = d_slot();

    if (dev != NULL)
    {
        dev->d_type = DAEMON;
        dev->d_when = whendo;
        dev->d_id = id;
        dev->d_arg = arg;
        dev->d_time = 1;
        demoncnt += 1;  /* update count */
    }
}


/*
    kill_daemon()
        Remove a daemon from the list
*/

void
kill_daemon(int id)
{
    struct delayed_action *dev;

    if ((dev = find_slot(DAEMON, id)) == NULL)
        return;

    /* Take it out of the list */

    dev->d_type = EMPTY;
    demoncnt -= 1;      /* update count */

    return;
}


/*
    do_daemons()
        Run all the daemons that are active with the current flag,
        passing the argument to the function.
*/

void
do_daemons(int now)
{
    struct delayed_action *dev;

    /* Loop through the devil list */

    for (dev = d_list; dev < &d_list[MAXDAEMONS]; dev++)
        /* Executing each one, giving it the proper arguments */
        if ( (dev->d_when == now) && (dev->d_type == DAEMON))
        {
            if ((dev->d_id < 1) || (dev->d_id >= DAEMON_MAX))
                printf("Bad daemon id %d\n", dev->d_id);
            else if (daemons[dev->d_id].func == NULL)
                printf("No action for daemon %d!!!\n", dev->d_id);
            else
            {
                daemon_arg arg;
				
                arg.varg = dev->d_arg;
                daemons[dev->d_id].func(&arg);
            }
        }

}


/*
    fuse()
        Start a fuse to go off in a certain number of turns
*/

void
light_fuse(int id, void *arg, int time, int whendo)
{
    struct delayed_action   *wire;

    wire = d_slot();

    if (wire != NULL)
    {
        wire->d_type = FUSE;
        wire->d_when = whendo;
        wire->d_id   = id;
        wire->d_arg  = arg;
        wire->d_time = time;
        demoncnt += 1;  /* update count */
    }
}


/*
    lengthen()
        Increase the time until a fuse goes off
*/

void
lengthen_fuse(int id, int xtime)
{
    struct delayed_action *wire;

    if ((wire = find_slot(FUSE,id)) == NULL)
        return;

    wire->d_time += xtime;

    return;
}


/*
    extinguish()
        Put out a fuse
*/

void
extinguish_fuse(int id)
{
    struct delayed_action   *wire;

    if ((wire = find_slot(FUSE,id)) == NULL)
        return;

    wire->d_type = EMPTY;
    demoncnt -= 1;

    return;
}


/*
    do_fuses()
        Decrement counters and start needed fuses
*/

void
do_fuses(int now)
{
    struct delayed_action   *wire;

    /* Step though the list */

    for (wire = d_list; wire < &d_list[MAXDAEMONS]; wire++)
    {
        /*
         * Decrementing counters and starting things we want.  We
         * also need to remove the fuse from the list once it has
         * gone off.
         */

        if( (wire->d_type == FUSE) && (wire->d_when == now) )
        {
            if (--wire->d_time <= 0)
            {
                if (wire->d_id < 0 || wire->d_id >= FUSE_MAX)
                    printf("Bad fuse id %d\n", wire->d_id);
                else if (fuses[wire->d_id].func == NULL)
                    printf("No action for fuse %d!\n", wire->d_id);
                else
                {
                    fuse_arg arg;

                    arg.varg = wire->d_arg;
                    fuses[wire->d_id].func(&arg);
                }
                wire->d_type = EMPTY;
                demoncnt -= 1;
            }
        }

    }

    return;
}


/*
    activity()
        Show wizard number of demaons and memory blocks used
*/

void
activity(void)
{
    msg("Daemons = %d : Memory Items = %d ", demoncnt, total);
    return;
}

/*
    waste_time()
        Do nothing but let other things happen
*/

void
waste_time(void)
{
    if (inwhgt)     /* if from wghtchk then done */
        return;

    do_daemons(BEFORE);
    do_fuses(BEFORE);
    do_daemons(AFTER);
    do_fuses(AFTER);
}