/*      $NetBSD: misc.c,v 1.21 2011/09/01 07:18:50 plunky Exp $ */

/*
 * misc.c  Phantasia miscellaneous support routines
 */

#include <string.h>
#include "include.h"

static double explevel(double);

/*
 * FUNCTION: move player to new level
 *
 * GLOBAL INPUTS: Player, *stdscr, *Statptr, Stattable[]
 *
 * GLOBAL OUTPUTS: Player, Changed
 *
 * DESCRIPTION:
 *      Use lookup table to increment important statistics when
 *      progressing to new experience level.
 *      Players are rested to maximum as a bonus for making a new
 *      level.
 *      Check for council of wise, and being too big to be king.
 */

static void
movelevel(void)
{
        const struct charstats *statptr; /* for pointing into Stattable */
        double new;             /* new level */
        double inc;             /* increment between new and old levels */

        Changed = TRUE;

        if (Player.p_type == C_EXPER)
                /* roll a type to use for increment */
                statptr = &Stattable[(int)ROLL(C_MAGIC, C_HALFLING - C_MAGIC + 1)];
        else
                statptr = Statptr;

        new = explevel(Player.p_experience);
        inc = new - Player.p_level;
        Player.p_level = new;

        /* add increments to statistics */
        Player.p_strength += statptr->c_strength.increase * inc;
        Player.p_mana += statptr->c_mana.increase * inc;
        Player.p_brains += statptr->c_brains.increase * inc;
        Player.p_magiclvl += statptr->c_magiclvl.increase * inc;
        Player.p_maxenergy += statptr->c_energy.increase * inc;

        /* rest to maximum upon reaching new level */
        Player.p_energy = Player.p_maxenergy + Player.p_shield;

        if (Player.p_crowns > 0 && Player.p_level >= 1000.0) {
                /* no longer able to be king -- turn crowns into cash */
                Player.p_gold += ((double)Player.p_crowns) * 5000.0;
                Player.p_crowns = 0;
        }

        if (Player.p_level >= 3000.0 && Player.p_specialtype < SC_COUNCIL) {
                /* make a member of the council */
                mvaddstr(6, 0, "You have made it to the Council of the Wise.\n");
                addstr("Good Luck on your search for the Holy Grail.\n");

                Player.p_specialtype = SC_COUNCIL;

                /* no rings for council and above */
                Player.p_ring.ring_type = R_NONE;
                Player.p_ring.ring_duration = 0;

                Player.p_lives = 3;     /* three extra lives */
        }

        if (Player.p_level > 9999.0 && Player.p_specialtype != SC_VALAR)
                death("Old age");
}

/*
 * FUNCTION: return a formatted description of location
 *
 * ARGUMENTS:
 *      struct player playerp - pointer to player structure
 *      bool shortflag - set if short form is desired
 *
 * RETURN VALUE: pointer to string containing result
 *
 * GLOBAL INPUTS: Databuf[]
 *
 * DESCRIPTION:
 *      Look at coordinates and return an appropriately formatted
 *      string.
 */

const char *
descrlocation(struct player *playerp, bool shortflag)
{
        double circle;          /* corresponding circle for coordinates */
        int quadrant;           /* quadrant of grid */
        const char *label;      /* pointer to place name */
        static const char *nametable[4][4] =    /* names of places */
        {
                { "Anorien",      "Ithilien",   "Rohan",              "Lorien"         },
                { "Gondor",       "Mordor",     "Dunland",            "Rovanion"       },
                { "South Gondor", "Khand",      "Eriador",            "The Iron Hills" },
                { "Far Harad",    "Near Harad", "The Northern Waste", "Rhun"           }
        };

        if (playerp->p_specialtype == SC_VALAR)
                return (" is in Valhala");
        else if ((circle = CIRCLE(playerp->p_x, playerp->p_y)) >= 1000.0) {
                if (MAX(fabs(playerp->p_x), fabs(playerp->p_y)) > D_BEYOND)
                        label = "The Point of No Return";
                else
                        label = "The Ashen Mountains";
        } else if (circle >= 55)
                label = "Morannon";
        else if (circle >= 35)
                label = "Kennaquahair";
        else if (circle >= 20)
                label = "The Dead Marshes";
        else if (circle >= 9)
                label = "The Outer Waste";
        else if (circle >= 5)
                label = "The Moors Adventurous";
        else {
                if (playerp->p_x == 0.0 && playerp->p_y == 0.0)
                        label = "The Lord's Chamber";
                else {
                        /* this expression is split to prevent compiler loop with some compilers */
                        quadrant = ((playerp->p_x > 0.0) ? 1 : 0);
                        quadrant += ((playerp->p_y >= 0.0) ? 2 : 0);
                        label = nametable[((int)circle) - 1][quadrant];
                }
        }

        if (shortflag)
                sprintf(Databuf, "%.29s", label);
        else
                sprintf(Databuf, " is in %s  (%.0f,%.0f)", label, playerp->p_x, playerp->p_y);

        return (Databuf);
}

/*
 * FUNCTION: do trading post stuff
 *
 * GLOBAL INPUTS: Menu[], Circle, Player, *stdscr, Fileloc, Nobetter[]
 *
 * GLOBAL OUTPUTS: Player
 *
 * DESCRIPTION:
 *      Different trading posts have different items.
 *      Merchants cannot be cheated, but they can be dishonest
 *      themselves.
 *
 *      Shields, swords, and quicksilver are not cumulative.  This is
 *      one major area of complaint, but there are two reasons for this:
 *              1) It becomes MUCH too easy to make very large versions
 *                 of these items.
 *              2) In the real world, one cannot simply weld two swords
 *                 together to make a bigger one.
 *
 *      At one time, it was possible to sell old weapons at half the purchase
 *      price.  This resulted in huge amounts of gold floating around,
 *      and the game lost much of its challenge.
 *
 *      Also, purchasing gems defeats the whole purpose of gold.  Gold
 *      is small change for lower level players.  They really shouldn't
 *      be able to accumulate more than enough gold for a small sword or
 *      a few books.  Higher level players shouldn't even bother to pick
 *      up gold, except maybe to buy mana once in a while.
 */

void
tradingpost(void)
{
        double numitems;        /* number of items to purchase */
        double cost;            /* cost of purchase */
        double blessingcost;    /* cost of blessing */
        int ch;                 /* input */
        int size;               /* size of the trading post */
        int loop;               /* loop counter */
        int cheat = 0;          /* number of times player has tried to cheat */
        bool dishonest = FALSE; /* set when merchant is dishonest */

        Player.p_status = S_TRADING;
        writerecord(&Player, Fileloc);

        clear();
        addstr("You are at a trading post. All purchases must be made with gold.");

        size = sqrt(fabs(Player.p_x / 100)) + 1;
        size = MIN(7, size);

        /* set up cost of blessing */
        blessingcost = 1000.0 * (Player.p_level + 5.0);

        /* print Menu */
        move(7, 0);
        for (loop = 0; loop < size; ++loop) {
                /* print Menu */
                if (loop == 6)
                        cost = blessingcost;
                else
                        cost = Menu[loop].cost;
                printw("(%d) %-12s: %6.0f\n", loop + 1, Menu[loop].item, cost);
        }

        mvprintw(5, 0, "L:Leave  P:Purchase  S:Sell Gems ? ");

        for (;;) {
                adjuststats();  /* truncate any bad values */

                /* print some important statistics */
                mvprintw(1, 0, "Gold:   %9.0f  Gems:  %9.0f  Level:   %6.0f  Charms: %6d\n",
                    Player.p_gold, Player.p_gems, Player.p_level, Player.p_charms);
                printw("Shield: %9.0f  Sword: %9.0f  Quicksilver:%3.0f  Blessed: %s\n",
                    Player.p_shield, Player.p_sword, Player.p_quksilver,
                    (Player.p_blessing ? " True" : "False"));
                printw("Brains: %9.0f  Mana:  %9.0f", Player.p_brains, Player.p_mana);

                move(5, 36);
                ch = getanswer("LPS", FALSE);
                move(15, 0);
                clrtobot();
                switch (ch) {
                case 'L':       /* leave */
                case '\n':
                        altercoordinates(0.0, 0.0, A_NEAR);
                        return;

                case 'P':       /* make purchase */
                        mvaddstr(15, 0, "What what would you like to buy ? ");
                        ch = getanswer(" 1234567", FALSE);
                        move(15, 0);
                        clrtoeol();

                        if (ch - '0' > size)
                                addstr("Sorry, this merchant doesn't have that.");
                        else
                                switch (ch) {
                                case '1':
                                        printw("Mana is one per %.0f gold piece.  How many do you want (%.0f max) ? ",
                                            Menu[0].cost, floor(Player.p_gold / Menu[0].cost));
                                        cost = (numitems = floor(infloat())) * Menu[0].cost;

                                        if (cost > Player.p_gold || numitems < 0)
                                                ++cheat;
                                        else {
                                                cheat = 0;
                                                Player.p_gold -= cost;
                                                if (drandom() < 0.02)
                                                        dishonest = TRUE;
                                                else
                                                        Player.p_mana += numitems;
                                        }
                                        break;

                                case '2':
                                        printw("Shields are %.0f per +1.  How many do you want (%.0f max) ? ",
                                            Menu[1].cost, floor(Player.p_gold / Menu[1].cost));
                                        cost = (numitems = floor(infloat())) * Menu[1].cost;

                                        if (numitems == 0.0)
                                                break;
                                        else if (cost > Player.p_gold || numitems < 0)
                                                ++cheat;
                                        else if (numitems < Player.p_shield)
                                                NOBETTER();
                                        else {
                                                cheat = 0;
                                                Player.p_gold -= cost;
                                                if (drandom() < 0.02)
                                                        dishonest = TRUE;
                                                else
                                                        Player.p_shield = numitems;
                                        }
                                        break;

                                case '3':
                                        printw("A book costs %.0f gp.  How many do you want (%.0f max) ? ",
                                            Menu[2].cost, floor(Player.p_gold / Menu[2].cost));
                                        cost = (numitems = floor(infloat())) * Menu[2].cost;

                                        if (cost > Player.p_gold || numitems < 0)
                                                ++cheat;
                                        else {
                                                cheat = 0;
                                                Player.p_gold -= cost;
                                                if (drandom() < 0.02)
                                                        dishonest = TRUE;
                                                else if (drandom() * numitems > Player.p_level / 10.0 &&
                                                    numitems != 1) {
                                                        printw("\nYou blew your mind!\n");
                                                        Player.p_brains /= 5;
                                                } else {
                                                        Player.p_brains += floor(numitems) * ROLL(20, 8);
                                                }
                                        }
                                        break;

                                case '4':
                                        printw("Swords are %.0f gp per +1.  How many + do you want (%.0f max) ? ",
                                            Menu[3].cost, floor(Player.p_gold / Menu[3].cost));
                                        cost = (numitems = floor(infloat())) * Menu[3].cost;

                                        if (numitems == 0.0)
                                                break;
                                        else if (cost > Player.p_gold || numitems < 0)
                                                ++cheat;
                                        else if (numitems < Player.p_sword)
                                                NOBETTER();
                                        else {
                                                cheat = 0;
                                                Player.p_gold -= cost;
                                                if (drandom() < 0.02)
                                                        dishonest = TRUE;
                                                else
                                                        Player.p_sword = numitems;
                                        }
                                        break;

                                case '5':
                                        printw("A charm costs %.0f gp.  How many do you want (%.0f max) ? ",
                                            Menu[4].cost, floor(Player.p_gold / Menu[4].cost));
                                        cost = (numitems = floor(infloat())) * Menu[4].cost;

                                        if (cost > Player.p_gold || numitems < 0)
                                                ++cheat;
                                        else {
                                                cheat = 0;
                                                Player.p_gold -= cost;
                                                if (drandom() < 0.02)
                                                        dishonest = TRUE;
                                                else
                                                        Player.p_charms += numitems;
                                        }
                                        break;

                                case '6':
                                        printw("Quicksilver is %.0f gp per +1.  How many + do you want (%.0f max) ? ",
                                            Menu[5].cost, floor(Player.p_gold / Menu[5].cost));
                                        cost = (numitems = floor(infloat())) * Menu[5].cost;

                                        if (numitems == 0.0)
                                                break;
                                        else if (cost > Player.p_gold || numitems < 0)
                                                ++cheat;
                                        else if (numitems < Player.p_quksilver)
                                                NOBETTER();
                                        else {
                                                cheat = 0;
                                                Player.p_gold -= cost;
                                                if (drandom() < 0.02)
                                                        dishonest = TRUE;
                                                else
                                                        Player.p_quksilver = numitems;
                                        }
                                        break;

                                case '7':
                                        if (Player.p_blessing) {
                                                addstr("You already have a blessing.");
                                                break;
                                        }

                                        printw("A blessing requires a %.0f gp donation.  Still want one ? ", blessingcost);
                                        ch = getanswer("NY", FALSE);

                                        if (ch == 'Y') {
                                                if (Player.p_gold < blessingcost)
                                                        ++cheat;
                                                else {
                                                        cheat = 0;
                                                        Player.p_gold -= blessingcost;
                                                        if (drandom() < 0.02)
                                                                dishonest = TRUE;
                                                        else
                                                                Player.p_blessing = TRUE;
                                                }
                                        }
                                        break;
                                }
                        break;

                case 'S':       /* sell gems */
                        mvprintw(15, 0, "A gem is worth %.0f gp.  How many do you want to sell (%.0f max) ? ",
                            (double)N_GEMVALUE, Player.p_gems);
                        numitems = floor(infloat());

                        if (numitems > Player.p_gems || numitems < 0)
                                ++cheat;
                        else {
                                cheat = 0;
                                Player.p_gems -= numitems;
                                Player.p_gold += numitems * N_GEMVALUE;
                        }
                }

                if (cheat == 1)
                        mvaddstr(17, 0, "Come on, merchants aren't stupid.  Stop cheating.\n");
                else if (cheat == 2) {
                        mvaddstr(17, 0, "You had your chance.  This merchant happens to be\n");
                        printw("a %.0f level magic user, and you made %s mad!\n",
                            ROLL(Circle * 20.0, 40.0), (drandom() < 0.5) ? "him" : "her");
                        altercoordinates(0.0, 0.0, A_FAR);
                        Player.p_energy /= 2.0;
                        ++Player.p_sin;
                        more(23);
                        return;
                } else if (dishonest) {
                        mvaddstr(17, 0, "The merchant stole your money!");
                        refresh();
                        altercoordinates(Player.p_x - Player.p_x / 10.0,
                            Player.p_y - Player.p_y / 10.0, A_SPECIFIC);
                        sleep(2);
                        return;
                }
        }
}

/*
 * FUNCTION: print out important player statistics
 *
 * GLOBAL INPUTS: Users, Player
 *
 * DESCRIPTION:
 *      Important player statistics are printed on the screen.
 */

void
displaystats(void)
{
        mvprintw(0, 0, "%s%s\n", Player.p_name, descrlocation(&Player, FALSE));
        mvprintw(1, 0, "Level :%7.0f   Energy  :%9.0f(%9.0f)  Mana :%9.0f  Users:%3d\n",
            Player.p_level, Player.p_energy, Player.p_maxenergy + Player.p_shield,
            Player.p_mana, Users);
        mvprintw(2, 0, "Quick :%3.0f(%3.0f)  Strength:%9.0f(%9.0f)  Gold :%9.0f  %s\n",
            Player.p_speed, Player.p_quickness + Player.p_quksilver, Player.p_might,
            Player.p_strength + Player.p_sword, Player.p_gold, descrstatus(&Player));
}

/*
 * FUNCTION: show player items
 *
 * GLOBAL INPUTS: Player
 *
 * DESCRIPTION:
 *      Print out some player statistics of lesser importance.
 */

void
allstatslist(void)
{
        static const char *flags[] =    /* to print value of some bools */
        {
                "False",
                " True"
        };

        mvprintw(8, 0, "Type: %s\n", descrtype(&Player, FALSE));

        mvprintw(10, 0, "Experience: %9.0f", Player.p_experience);
        mvprintw(11, 0, "Brains    : %9.0f", Player.p_brains);
        mvprintw(12, 0, "Magic Lvl : %9.0f", Player.p_magiclvl);
        mvprintw(13, 0, "Sin       : %9.5f", Player.p_sin);
        mvprintw(14, 0, "Poison    : %9.5f", Player.p_poison);
        mvprintw(15, 0, "Gems      : %9.0f", Player.p_gems);
        mvprintw(16, 0, "Age       : %9d", Player.p_age);
        mvprintw(10, 40, "Holy Water: %9d", Player.p_holywater);
        mvprintw(11, 40, "Amulets   : %9d", Player.p_amulets);
        mvprintw(12, 40, "Charms    : %9d", Player.p_charms);
        mvprintw(13, 40, "Crowns    : %9d", Player.p_crowns);
        mvprintw(14, 40, "Shield    : %9.0f", Player.p_shield);
        mvprintw(15, 40, "Sword     : %9.0f", Player.p_sword);
        mvprintw(16, 40, "Quickslver: %9.0f", Player.p_quksilver);

        mvprintw(18, 0, "Blessing: %s   Ring: %s   Virgin: %s   Palantir: %s",
            flags[Player.p_blessing], flags[Player.p_ring.ring_type != R_NONE],
            flags[Player.p_virgin], flags[Player.p_palantir]);
}

/*
 * FUNCTION: return a string specifying player type
 *
 * ARGUMENTS:
 *      struct player playerp - pointer to structure for player
 *      bool shortflag - set if short form is desired
 *
 * RETURN VALUE: pointer to string describing player type
 *
 * GLOBAL INPUTS: Databuf[]
 *
 * GLOBAL OUTPUTS: Databuf[]
 *
 * DESCRIPTION:
 *      Return a string describing the player type.
 *      King, council, valar, supersedes other types.
 *      The first character of the string is '*' if the player
 *      has a crown.
 *      If 'shortflag' is TRUE, return a 3 character string.
 */

const char *
descrtype(struct player *playerp, bool shortflag)
{
        int type;               /* for caluculating result subscript */
        static const char *results[] =  /* description table */
        {
                " Magic User",      " MU",
                " Fighter",         " F ",
                " Elf",             " E ",
                " Dwarf",           " D ",
                " Halfling",        " H ",
                " Experimento",     " EX",
                " Super",           " S ",
                " King",            " K ",
                " Council of Wise", " CW",
                " Ex-Valar",        " EV",
                " Valar",           " V ",
                " ? ",              " ? "
        };

        type = playerp->p_type;

        switch (playerp->p_specialtype) {
        case SC_NONE:
                type = playerp->p_type;
                break;

        case SC_KING:
                type = 7;
                break;

        case SC_COUNCIL:
                type = 8;
                break;

        case SC_EXVALAR:
                type = 9;
                break;

        case SC_VALAR:
                type = 10;
                break;
        }

        type *= 2;              /* calculate offset */

        if (type > 20)
                /* error */
                type = 22;

        if (shortflag)
                /* use short descriptions */
                ++type;

        if (playerp->p_crowns > 0) {
                strcpy(Databuf, results[type]);
                Databuf[0] = '*';
                return (Databuf);
        } else
                return (results[type]);
}

/*
 * FUNCTION: find location in player file of given name
 *
 * ARGUMENTS:
 *      char *name - name of character to look for
 *      struct player *playerp - pointer of structure to fill
 *
 * RETURN VALUE: location of player if found, -1 otherwise
 *
 * GLOBAL INPUTS: Wizard, *Playersfp
 *
 * DESCRIPTION:
 *      Search the player file for the player of the given name.
 *      If player is found, fill structure with player data.
 */

long
findname(const char *name, struct player *playerp)
{
        long loc = 0;   /* location in the file */

        fseek(Playersfp, 0L, SEEK_SET);
        while (fread((char *)playerp, SZ_PLAYERSTRUCT, 1, Playersfp) == 1) {
                if (strcmp(playerp->p_name, name) == 0) {
                        if (playerp->p_status != S_NOTUSED || Wizard)
                                /* found it */
                                return (loc);
                }
                loc += SZ_PLAYERSTRUCT;
        }

        return (-1);
}

/*
 * FUNCTION: find space in the player file for a new character
 *
 * RETURN VALUE: location of free space in file
 *
 * GLOBAL INPUTS: Other, *Playersfp
 *
 * GLOBAL OUTPUTS: Player
 *
 * DESCRIPTION:
 *      Search the player file for an unused entry.  If none are found,
 *      make one at the end of the file.
 */

long
allocrecord(void)
{
        long loc = 0L;  /* location in file */

        fseek(Playersfp, 0L, SEEK_SET);
        while (fread((char *)&Other, SZ_PLAYERSTRUCT, 1, Playersfp) == 1) {
                if (Other.p_status == S_NOTUSED)
                        /* found an empty record */
                        return (loc);
                else
                        loc += SZ_PLAYERSTRUCT;
        }

        /* make a new record */
        initplayer(&Other);
        Player.p_status = S_OFF;
        writerecord(&Other, loc);

        return (loc);
}

/*
 * FUNCTION: free up a record on the player file
 *
 * ARGUMENTS:
 *      struct player playerp - pointer to structure to free
 *      long loc - location in file to free
 *
 * DESCRIPTION:
 *      Mark structure as not used, and update player file.
 */

void
freerecord(struct player *playerp, long loc)
{
        playerp->p_name[0] = CH_MARKDELETE;
        playerp->p_status = S_NOTUSED;
        writerecord(playerp, loc);
}

/*
 * FUNCTION: leave game
 *
 * GLOBAL INPUTS: Player, Fileloc
 *
 * GLOBAL OUTPUTS: Player
 *
 * DESCRIPTION:
 *      Mark player as inactive, and cleanup.
 *      Do not save players below level 1.
 */

void
leavegame(void)
{
        if (Player.p_level < 1.0)
                /* delete character */
                freerecord(&Player, Fileloc);
        else {
                Player.p_status = S_OFF;
                writerecord(&Player, Fileloc);
        }

        cleanup(TRUE);
        /* NOTREACHED */
        exit(1);
}

/*
 * FUNCTION: death routine
 *
 * ARGUMENTS:
 *      char *how - pointer to string describing cause of death
 *
 * GLOBAL INPUTS: Curmonster, Wizard, Player, *stdscr, Fileloc, *Monstfp
 *
 * GLOBAL OUTPUTS: Player
 *
 * DESCRIPTION:
 *      Kill off current player.
 *      Handle rings, and multiple lives.
 *      Print an appropriate message.
 *      Update scoreboard, lastdead, and let other players know about
 *      the demise of their comrade.
 */

void
death(const char *how)
{
        FILE *fp;       /* for updating various files */
        int ch;         /* input */
        static const char *const deathmesg[] =
        /* add more messages here, if desired */
        {
                "You have been wounded beyond repair.  ",
                "You have been disemboweled.  ",
                "You've been mashed, mauled, and spit upon.  (You're dead.)\n",
                "You died!  ",
                "You're a complete failure -- you've died!!\n",
                "You have been dealt a fatal blow!  "
        };

        clear();

        if (strcmp(how, "Stupidity") != 0) {
                if (Player.p_level > 9999.0)
                        /* old age */
                        addstr("Characters must be retired upon reaching level 10000.  Sorry.");
                else if (Player.p_lives > 0) {
                        /* extra lives */
                        addstr("You should be more cautious.  You've been killed.\n");
                        printw("You only have %d more chance(s).\n", --Player.p_lives);
                        more(3);
                        Player.p_energy = Player.p_maxenergy;
                        return;
                } else if (Player.p_specialtype == SC_VALAR) {
                        addstr("You had your chances, but Valar aren't totally\n");
                        addstr("immortal.  You are now left to wither and die . . .\n");
                        more(3);
                        Player.p_brains = Player.p_level / 25.0;
                        Player.p_energy = Player.p_maxenergy /= 5.0;
                        Player.p_quksilver = Player.p_sword = 0.0;
                        Player.p_specialtype = SC_COUNCIL;
                        return;
                } else if (Player.p_ring.ring_inuse &&
                          (Player.p_ring.ring_type == R_DLREG || Player.p_ring.ring_type == R_NAZREG)) {
                        /* good ring in use - saved from death */
                        mvaddstr(4, 0, "Your ring saved you from death!\n");
                        refresh();
                        Player.p_ring.ring_type = R_NONE;
                        Player.p_energy = Player.p_maxenergy / 12.0 + 1.0;
                        if (Player.p_crowns > 0)
                                --Player.p_crowns;
                        return;
                } else if (Player.p_ring.ring_type == R_BAD ||
                           Player.p_ring.ring_type == R_SPOILED) {
                        /* bad ring in possession; name idiot after player */
                        mvaddstr(4, 0,
                                 "Your ring has taken control of you and turned you into a monster!\n");
                        fseek(Monstfp, 13L * SZ_MONSTERSTRUCT, SEEK_SET);
                        fread((char *)&Curmonster, SZ_MONSTERSTRUCT, 1, Monstfp);
                        strcpy(Curmonster.m_name, Player.p_name);
                        fseek(Monstfp, 13L * SZ_MONSTERSTRUCT, SEEK_SET);
                        fwrite((char *)&Curmonster, SZ_MONSTERSTRUCT, 1, Monstfp);
                        fflush(Monstfp);
                }
        }

        enterscore();           /* update score board */

        /* put info in last dead file */
        fp = fopen(_PATH_LASTDEAD, "w");
        fprintf(fp, "%s (%s, run by %s, level %.0f, killed by %s)",
            Player.p_name, descrtype(&Player, TRUE),
            Player.p_login, Player.p_level, how);
        fclose(fp);

        /* let other players know */
        fp = fopen(_PATH_MESS, "w");
        fprintf(fp, "%s was killed by %s.", Player.p_name, how);
        fclose(fp);

        freerecord(&Player, Fileloc);

        clear();
        move(10, 0);
        addstr(deathmesg[(int)ROLL(0.0, (double)sizeof(deathmesg) / sizeof(char *))]);
        addstr("Care to give it another try ? ");
        ch = getanswer("NY", FALSE);

        if (ch == 'Y') {
                cleanup(FALSE);
                execl(_PATH_GAMEPROG, "phantasia", "-s",
                    (Wizard ? "-S" : NULL), NULL);
                exit(0);
                /* NOTREACHED */
        }

        cleanup(TRUE);
        /* NOTREACHED */
}

/*
 * FUNCTION: update structure in player file
 *
 * ARGUMENTS:
 *      struct player *playerp - pointer to structure to write out
 *      long place - location in file to updata
 *
 * GLOBAL INPUTS: *Playersfp
 *
 * DESCRIPTION:
 *      Update location in player file with given structure.
 */

void
writerecord(struct player *playerp, long place)
{
        fseek(Playersfp, place, SEEK_SET);
        fwrite((char *)playerp, SZ_PLAYERSTRUCT, 1, Playersfp);
        fflush(Playersfp);
}

/*
 * FUNCTION: calculate level based upon experience
 *
 * ARGUMENTS:
 *      double experience - experience to calculate experience level from
 *
 * RETURN VALUE: experience level
 *
 * DESCRIPTION:
 *      Experience level is a geometric progression.  This has been finely
 *      tuned over the years, and probably should not be changed.
 */

static double
explevel(double experience)
{
        if (experience < 1.1e7)
                return (floor(pow((experience / 1000.0), 0.4875)));
        else
                return (floor(pow((experience / 1250.0), 0.4865)));
}

/*
 * FUNCTION: truncate trailing blanks off a string
 *
 * ARGUMENTS:
 *      char *string - pointer to null terminated string
 *
 * DESCRIPTION:
 *      Put nul characters in place of spaces at the end of the string.
 */

void
truncstring(char *string)
{
        size_t length;          /* length of string */

        length = strlen(string);
        while (string[--length] == ' ')
                string[length] = '\0';
}

/*
 * FUNCTION: Alter x, y coordinates and set/check location flags
 *
 * ARGUMENTS:
 *      double xnew, ynew - new x, y coordinates
 *      int operation - operation to perform with coordinates
 *
 * GLOBAL INPUTS: Circle, Beyond, Player
 *
 * GLOBAL OUTPUTS: Marsh, Circle, Beyond, Throne, Player, Changed
 *
 * DESCRIPTION:
 *      This module is called whenever the player's coordinates are altered.
 *      If the player is beyond the point of no return, he/she is forced
 *      to stay there.
 */

void
altercoordinates(double xnew, double ynew, int operation)
{
        switch (operation) {
        case A_FORCED:          /* move with no checks */
                break;

        case A_NEAR:            /* pick random coordinates near */
                xnew = Player.p_x + ROLL(1.0, 5.0);
                ynew = Player.p_y - ROLL(1.0, 5.0);
                /* FALLTHROUGH */

        case A_SPECIFIC:        /* just move player */
                if (Beyond && fabs(xnew) < D_BEYOND && fabs(ynew) < D_BEYOND) {
                        /*
                         * cannot move back from point of no return
                         * pick the largest coordinate to remain unchanged
                         */
                        if (fabs(xnew) > fabs(ynew))
                                xnew = SGN(Player.p_x) * MAX(fabs(Player.p_x), D_BEYOND);
                        else
                                ynew = SGN(Player.p_y) * MAX(fabs(Player.p_y), D_BEYOND);
                }
                break;

        case A_FAR:             /* pick random coordinates far */
                xnew = Player.p_x + SGN(Player.p_x) * ROLL(50 * Circle, 250 * Circle);
                ynew = Player.p_y + SGN(Player.p_y) * ROLL(50 * Circle, 250 * Circle);
                break;
        }

        /* now set location flags and adjust coordinates */
        Circle = CIRCLE(Player.p_x = floor(xnew), Player.p_y = floor(ynew));

        /* set up flags based upon location */
        Throne = Marsh = Beyond = FALSE;

        if (Player.p_x == 0.0 && Player.p_y == 0.0)
                Throne = TRUE;
        else if (Circle < 35 && Circle >= 20)
                Marsh = TRUE;
        else if (MAX(fabs(Player.p_x), fabs(Player.p_y)) >= D_BEYOND)
                Beyond = TRUE;

        Changed = TRUE;
}

/*
 * FUNCTION: read a player structure from file
 *
 * ARGUMENTS:
 *      struct player *playerp - pointer to structure to fill
 *      int loc - location of record to read
 *
 * GLOBAL INPUTS: *Playersfp
 *
 * DESCRIPTION:
 *      Read structure information from player file.
 */

void
readrecord(struct player *playerp, long loc)
{
        fseek(Playersfp, loc, SEEK_SET);
        fread((char *)playerp, SZ_PLAYERSTRUCT, 1, Playersfp);
}

/*
 * FUNCTION: adjust player statistics
 *
 * GLOBAL INPUTS: Player, *Statptr
 *
 * GLOBAL OUTPUTS: Circle, Player, Timeout
 *
 * DESCRIPTION:
 *      Handle adjustment and maximums on various player characteristics.
 */

void
adjuststats(void)
{
        double dtemp;           /* for temporary calculations */

        if (explevel(Player.p_experience) > Player.p_level) {
                /* move one or more levels */
                movelevel();
                if (Player.p_level > 5.0)
                        Timeout = TRUE;
        }

        if (Player.p_specialtype == SC_VALAR)
                /* valar */
                Circle = Player.p_level / 5.0;

        /* calculate effective quickness */
        dtemp = ((Player.p_gold + Player.p_gems / 2.0) - 1000.0) / Statptr->c_goldtote
            - Player.p_level;
        dtemp = MAX(0.0, dtemp);        /* gold slows player down */
        Player.p_speed = Player.p_quickness + Player.p_quksilver - dtemp;

        /* calculate effective strength */
        if (Player.p_poison > 0.0) {
                /* poison makes player weaker */
                dtemp = 1.0 - Player.p_poison * Statptr->c_weakness / 800.0;
                dtemp = MAX(0.1, dtemp);
        } else
                dtemp = 1.0;
        Player.p_might = dtemp * Player.p_strength + Player.p_sword;

        /* insure that important things are within limits */
        Player.p_quksilver = MIN(99.0, Player.p_quksilver);
        Player.p_mana = MIN(Player.p_mana,
            Player.p_level * Statptr->c_maxmana + 1000.0);
        Player.p_brains = MIN(Player.p_brains,
            Player.p_level * Statptr->c_maxbrains + 200.0);
        Player.p_charms = MIN(Player.p_charms, Player.p_level + 10.0);

        /*
         * some implementations have problems with floating point compare
         * we work around it with this stuff
         */
        Player.p_gold = floor(Player.p_gold) + 0.1;
        Player.p_gems = floor(Player.p_gems) + 0.1;
        Player.p_mana = floor(Player.p_mana) + 0.1;

        if (Player.p_ring.ring_type != R_NONE) {
                /* do ring things */
                /* rest to max */
                Player.p_energy = Player.p_maxenergy + Player.p_shield;

                if (Player.p_ring.ring_duration <= 0)
                        /* clean up expired rings */
                        switch (Player.p_ring.ring_type) {
                        case R_BAD:     /* ring drives player crazy */
                                Player.p_ring.ring_type = R_SPOILED;
                                Player.p_ring.ring_duration = (short)ROLL(10.0, 25.0);
                                break;

                        case R_NAZREG:  /* ring disappears */
                                Player.p_ring.ring_type = R_NONE;
                                break;

                        case R_SPOILED: /* ring kills player */
                                death("A cursed ring");
                                break;

                        case R_DLREG:   /* this ring doesn't expire */
                                Player.p_ring.ring_duration = 0;
                                break;
                        }
        }

        if (Player.p_age / N_AGE > Player.p_degenerated) {
                /* age player slightly */
                ++Player.p_degenerated;
                if (Player.p_quickness > 23.0)
                        Player.p_quickness *= 0.99;
                Player.p_strength *= 0.97;
                Player.p_brains *= 0.95;
                Player.p_magiclvl *= 0.97;
                Player.p_maxenergy *= 0.95;
                Player.p_quksilver *= 0.95;
                Player.p_sword *= 0.93;
                Player.p_shield *= 0.93;
        }
}

/*
 * FUNCTION: initialize a character
 *
 * ARGUMENTS:
 *      struct player *playerp - pointer to structure to init
 *
 * DESCRIPTION:
 *      Put a bunch of default values in the given structure.
 */

void
initplayer(struct player *playerp)
{
        playerp->p_experience =
            playerp->p_level =
            playerp->p_strength =
            playerp->p_sword =
            playerp->p_might =
            playerp->p_energy =
            playerp->p_maxenergy =
            playerp->p_shield =
            playerp->p_quickness =
            playerp->p_quksilver =
            playerp->p_speed =
            playerp->p_magiclvl =
            playerp->p_mana =
            playerp->p_brains =
            playerp->p_poison =
            playerp->p_gems =
            playerp->p_sin =
            playerp->p_1scratch =
            playerp->p_2scratch = 0.0;

        playerp->p_gold = ROLL(50.0, 75.0) + 0.1;       /* give some gold */

        playerp->p_x = ROLL(-125.0, 251.0);
        playerp->p_y = ROLL(-125.0, 251.0);     /* give random x, y */

        /* clear ring */
        playerp->p_ring.ring_type = R_NONE;
        playerp->p_ring.ring_duration = 0;
        playerp->p_ring.ring_inuse = FALSE;

        playerp->p_age = 0L;

        playerp->p_degenerated = 1;     /* don't degenerate initially */

        playerp->p_type = C_FIGHTER;    /* default */
        playerp->p_specialtype = SC_NONE;
        playerp->p_lives =
            playerp->p_crowns =
            playerp->p_charms =
            playerp->p_amulets =
            playerp->p_holywater =
            playerp->p_lastused = 0;
        playerp->p_status = S_NOTUSED;
        playerp->p_tampered = T_OFF;
        playerp->p_istat = I_OFF;

        playerp->p_palantir =
            playerp->p_blessing =
            playerp->p_virgin =
            playerp->p_blindness = FALSE;

        playerp->p_name[0] =
            playerp->p_password[0] =
            playerp->p_login[0] = '\0';
}

/*
 * FUNCTION: read message from other players
 *
 * GLOBAL INPUTS: *stdscr, Databuf[], *Messagefp
 *
 * DESCRIPTION:
 *      If there is a message from other players, print it.
 */

void
readmessage(void)
{
        move(3, 0);
        clrtoeol();
        fseek(Messagefp, 0L, SEEK_SET);
        if (fgets(Databuf, SZ_DATABUF, Messagefp) != NULL)
                addstr(Databuf);
}

/*
 * FUNCTION: process environment error
 *
 * ARGUMENTS:
 *      char *whichfile - pointer to name of file which caused error
 *
 * GLOBAL INPUTS: errno, *stdscr, printw(), printf(), Windows
 *
 * DESCRIPTION:
 *      Print message about offending file, and exit.
 */

void
error(const char *whichfile)
{
        int (*funcp)(const char *, ...) __printflike(1, 2);

        if (Windows) {
                funcp = (void *)printw;
                clear();
        } else
                funcp = printf;

        (*funcp)("An unrecoverable error has occurred reading %s.  (errno = %d)\n", whichfile, errno);
        (*funcp)("Please run 'setup' to determine the problem.\n");
        cleanup(TRUE);
        /* NOTREACHED */
}

/*
 * FUNCTION: calculate distance between two points
 *
 * ARGUMENTS:
 *      double x1, y1 - x, y coordinates of first point
 *      double x2, y2 - x, y coordinates of second point
 *
 * RETURN VALUE: distance between the two points
 *
 * DESCRIPTION:
 *      This function is provided because someone's hypot() library function
 *      fails if x1 == x2 && y1 == y2.
 */

double
distance(double x_1, double x_2, double y_1, double y_2)
{
        double deltax, deltay;

        deltax = x_1 - x_2;
        deltay = y_1 - y_2;
        return (sqrt(deltax * deltax + deltay * deltay));
}


/*
 * FUNCTION: exit upon trapping an illegal signal
 *
 * ARGUMENTS:
 *      int whichsig - signal which occurred to cause jump to here
 *
 * GLOBAL INPUTS: *stdscr
 *
 * DESCRIPTION:
 *      When an illegal signal is caught, print a message, and cleanup.
 */

void
ill_sig(int whichsig)
{
        clear();
        if (!(whichsig == SIGINT || whichsig == SIGQUIT))
                printw("Error: caught signal # %d.\n", whichsig);
        cleanup(TRUE);
        /* NOTREACHED */
}

/*
 * FUNCTION: return a string describing the player status
 *
 * ARGUMENTS:
 *      struct player playerp - pointer to player structure to describe
 *
 * RETURN VALUE: string describing player's status
 *
 * DESCRIPTION:
 *      Return verbal description of player status.
 *      If player status is S_PLAYING, check for low energy and blindness.
 */

const char *
descrstatus(struct player *playerp)
{
        switch (playerp->p_status) {
        case S_PLAYING:
                if (playerp->p_energy < 0.2 * (playerp->p_maxenergy + playerp->p_shield))
                        return ("Low Energy");
                else if (playerp->p_blindness)
                        return ("Blind");
                else
                        return ("In game");

        case S_CLOAKED:
                return ("Cloaked");

        case S_INBATTLE:
                return ("In Battle");

        case S_MONSTER:
                return ("Encounter");

        case S_TRADING:
                return ("Trading");

        case S_OFF:
                return ("Off");

        case S_HUNGUP:
                return ("Hung up");

        default:
                return ("");
        }
}

/*
 * FUNCTION: collect taxes from current player
 *
 * ARGUMENTS:
 *      double gold - amount of gold to tax
 *      double gems - amount of gems to tax
 *
 * GLOBAL INPUTS: Player
 *
 * GLOBAL OUTPUTS: Player
 *
 * DESCRIPTION:
 *      Pay taxes on gold and gems.  If the player does not have enough
 *      gold to pay taxes on the added gems, convert some gems to gold.
 *      Add taxes to tax data base; add remaining gold and gems to
 *      player's cache.
 */

void
collecttaxes(double gold, double gems)
{
        FILE *fp;               /* to update Goldfile */
        double dtemp;           /* for temporary calculations */
        double taxes;           /* tax liability */

        /* add to cache */
        Player.p_gold += gold;
        Player.p_gems += gems;

        /* calculate tax liability */
        taxes = N_TAXAMOUNT / 100.0 * (N_GEMVALUE * gems + gold);

        if (Player.p_gold < taxes) {
                /* not enough gold to pay taxes, must convert some gems to gold */
                /* number of gems to convert */
                dtemp = floor(taxes / N_GEMVALUE + 1.0);

                if (Player.p_gems >= dtemp) {
                        /* player has enough to convert */
                        Player.p_gems -= dtemp;
                        Player.p_gold += dtemp * N_GEMVALUE;
                } else {
                        /* take everything; this should never happen */
                        Player.p_gold += Player.p_gems * N_GEMVALUE;
                        Player.p_gems = 0.0;
                        taxes = Player.p_gold;
                }
        }

        Player.p_gold -= taxes;

        if ((fp = fopen(_PATH_GOLD, "r+")) != NULL) {
                /* update taxes */
                dtemp = 0.0;
                fread((char *)&dtemp, sizeof(double), 1, fp);
                dtemp += floor(taxes);
                fseek(fp, 0L, SEEK_SET);
                fwrite((char *)&dtemp, sizeof(double), 1, fp);
                fclose(fp);
        }
}