/*
 * Hero movement commands
 *
 * Advanced Rogue
 * Copyright (C) 1984, 1985 Michael Morgan, Ken Dalka and AT&T
 * All rights reserved.
 *
 * Based on "Super-Rogue"
 * Copyright (C) 1984 Robert D. Kindelberger
 * 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.
 */

#include "curses.h"
#include <ctype.h>
#include "rogue.h"

/*
 * Used to hold the new hero position
 */

static coord nh;

static const char Moves[3][3] = {
    { 'y', 'k', 'u' },
    { 'h', '\0', 'l' },
    { 'b', 'j', 'n' }
};

/*
 * be_trapped:
 *	The guy stepped on a trap.... Make him pay.
 */

be_trapped(th, tc)
register struct thing *th;
register coord *tc;
{
    register struct trap *tp;
    register char ch;
    register const char *mname = NULL;
    register bool is_player = (th == &player),
	          can_see;
    register struct linked_list *mitem = NULL;


    /* Can the player see the creature? */
    can_see = (cansee(tc->y, tc->x) && (is_player || !invisible(th)));

    tp = trap_at(tc->y, tc->x);
    /*
     * if he's wearing boots of elvenkind, he won't set off the trap
     * unless its a magic pool (they're not really traps)
     */
    if (is_player					&&
	cur_misc[WEAR_BOOTS] != NULL			&&
	cur_misc[WEAR_BOOTS]->o_which == MM_ELF_BOOTS	&&
	tp->tr_type != POOL)
	    return '\0';

    /*
     * if the creature is flying then it won't set off the trap
     */
     if (on(*th, ISFLY))
	return '\0';

    tp->tr_flags |= ISFOUND;

    if (!is_player) {
	mitem = find_mons(th->t_pos.y, th->t_pos.x);
	mname = monsters[th->t_index].m_name;
    }
    else {
	count = running = FALSE;
	mvwaddch(cw, tp->tr_pos.y, tp->tr_pos.x, tp->tr_type);
    }
    switch (ch = tp->tr_type) {
	case TRAPDOOR:
	    if (is_player) {
		level++;
		pstats.s_hpt -= roll(1, 10);
		msg("You fell into a trap!");
		if (pstats.s_hpt <= 0) death(D_FALL);
		new_level(NORMLEV);
	    }
	    else {
		if (can_see) msg("The %s fell into a trap!", mname);

		/* See if the fall killed the monster */
		if ((th->t_stats.s_hpt -= roll(1, 10)) <= 0) {
		    killed(mitem, FALSE, FALSE);
		}
		else {	/* Just move monster to next level */
		    check_residue(th);

		    /* Erase the monster from the old position */
		    if (isalpha(mvwinch(cw, th->t_pos.y, th->t_pos.x)))
			mvwaddch(cw, th->t_pos.y, th->t_pos.x, th->t_oldch);
		    mvwaddch(mw, th->t_pos.y, th->t_pos.x, ' ');
		    turn_on(*th, ISELSEWHERE);
		    detach(mlist, mitem);
		    attach(tlist, mitem);	/* remember him next level */
		}
	    }
	when BEARTRAP:
	    if (is_stealth(th)) {
		if (is_player) msg("You pass a bear trap.");
		else if (can_see) msg("The %s passes a bear trap.", mname);
	    }
	    else {
		th->t_no_move += BEARTIME;
		if (is_player) msg("You are caught in a bear trap.");
		else if (can_see) msg("The %s is caught in a bear trap.",
					mname);
	    }
	when SLEEPTRAP:
	    if (is_player) {
		msg("A strange white mist envelops you.");
		if (!ISWEARING(R_ALERT)) {
		    msg("You fall asleep.");
		    no_command += SLEEPTIME;
		}
	    }
	    else {
		if (can_see) 
		    msg("A strange white mist envelops the %s.",mname);
		if (on(*th, ISUNDEAD)) {
		    if (can_see) 
			msg("The mist doesn't seem to affect the %s.",mname);
		}
		else {
		    th->t_no_move += SLEEPTIME;
		}
	    }
	when ARROWTRAP:
	    if (swing(th->t_ctype, th->t_stats.s_lvl-1, th->t_stats.s_arm, 1))
	    {
		if (is_player) {
		    msg("Oh no! An arrow shot you.");
		    if ((pstats.s_hpt -= roll(1, 6)) <= 0) {
			msg("The arrow killed you.");
			death(D_ARROW);
		    }
		}
		else {
		    if (can_see) msg("An arrow shot the %s.", mname);
		    if ((th->t_stats.s_hpt -= roll(1, 6)) <= 0) {
			if (can_see) msg("The arrow killed the %s.", mname);
			killed(mitem, FALSE, FALSE);
		    }
		}
	    }
	    else
	    {
		register struct linked_list *item;
		register struct object *arrow;

		if (is_player) msg("An arrow shoots past you.");
		else if (can_see) msg("An arrow shoots by the %s.", mname);
		item = new_item(sizeof *arrow);
		arrow = OBJPTR(item);
		arrow->o_type = WEAPON;
		arrow->contents = NULL;
		arrow->o_which = ARROW;
		arrow->o_hplus = rnd(3) - 1;
		arrow->o_dplus = rnd(3) - 1;
		init_weapon(arrow, ARROW);
		arrow->o_count = 1;
		arrow->o_pos = *tc;
		arrow->o_mark[0] = '\0';
		fall(item, FALSE);
	    }
	when TELTRAP:
	    if (is_player) teleport();
	    else {
		register int rm;
	        struct room *old_room;	/* old room of monster */

		/* 
		 * Erase the monster from the old position 
		 */
		if (isalpha(mvwinch(cw, th->t_pos.y, th->t_pos.x)))
		    mvwaddch(cw, th->t_pos.y, th->t_pos.x, th->t_oldch);
		mvwaddch(mw, th->t_pos.y, th->t_pos.x, ' ');
		/*
		 * check to see if room should go dark
		 */
		if (on(*th, HASFIRE)) {
		    old_room=roomin(&th->t_pos);
		    if (old_room != NULL) {
			register struct linked_list *fire_item;

			for (fire_item = old_room->r_fires; fire_item != NULL;
			     fire_item = next(fire_item)) {
			    if (THINGPTR(fire_item) == th) {
				detach(old_room->r_fires, fire_item);
				destroy_item(fire_item);

				if (old_room->r_fires == NULL) {
				    old_room->r_flags &= ~HASFIRE;
				    if (can_see) light(&hero);
				}
			    }
			}
		    }
		}

		/* Get a new position */
		do {
		    rm = rnd_room();
		    rnd_pos(&rooms[rm], &th->t_pos);
		} until(winat(th->t_pos.y, th->t_pos.x) == FLOOR);

		/* Put it there */
		mvwaddch(mw, th->t_pos.y, th->t_pos.x, th->t_type);
		th->t_oldch = CCHAR( mvwinch(cw, th->t_pos.y, th->t_pos.x) );
		/*
		 * check to see if room that creature appears in should
		 * light up
		 */
	        if (on(*th, HASFIRE)) {
		    register struct linked_list *fire_item;

		    fire_item = creat_item();
		    ldata(fire_item) = (char *) th;
		    attach(rooms[rm].r_fires, fire_item);

		    rooms[rm].r_flags |= HASFIRE;
		    if(cansee(th->t_pos.y, th->t_pos.x) && 
		       next(rooms[rm].r_fires) == NULL)
			light(&hero);
		}
		if (can_see) msg("The %s seems to have disappeared!", mname);
	    }
	when DARTTRAP:
	    if (swing(th->t_ctype, th->t_stats.s_lvl+1, th->t_stats.s_arm, 1)) {
		if (is_player) {
		    msg("A small dart just hit you in the shoulder.");
		    if ((pstats.s_hpt -= roll(1, 4)) <= 0) {
			msg("The dart killed you.");
			death(D_DART);
		    }

		    /* Now the poison */
		    if (!save(VS_POISON, &player, 0)) {
			/* 75% chance it will do point damage - else strength */
			if (rnd(100) < 75) {
			    pstats.s_hpt /= 2;
			    if (pstats.s_hpt == 0) death(D_POISON);
			}
			else if (!ISWEARING(R_SUSABILITY))
				chg_str(-1);
		    }
		}
		else {
		    if (can_see)
			msg("A small dart just hit the %s in the shoulder.",
				mname);
		    if ((th->t_stats.s_hpt -= roll(1,4)) <= 0) {
			if (can_see) msg("The dart killed the %s.", mname);
			killed(mitem, FALSE, FALSE);
		    }
		    if (!save(VS_POISON, th, 0)) {
			th->t_stats.s_hpt /= 2;
			if (th->t_stats.s_hpt <= 0) {
			    if (can_see) msg("The dart killed the %s.", mname);
			    killed(mitem, FALSE, FALSE);
			}
		    }
		}
	    }
	    else {
		if (is_player)
		    msg("A small dart whizzes by your ear and vanishes.");
		else if (can_see)
		    msg("A small dart whizzes by the %s's ear and vanishes.",
			mname);
	    }
        when POOL: {
	    register int i;

	    i = rnd(100);
	    if (is_player) {
		if ((tp->tr_flags & ISGONE)) {
		    if (i < 30) {
			teleport();	   /* teleport away */
			pool_teleport = TRUE;
		    }
		    else if((i < 45) && level > 2) {
			level -= rnd(2) + 1;
			cur_max = level;
			new_level(NORMLEV);
			pool_teleport = TRUE;
			msg("You here a faint groan from below.");
		    }
		    else if(i < 70) {
			level += rnd(4) + 1;
			new_level(NORMLEV);
			pool_teleport = TRUE;
			msg("You find yourself in strange surroundings.");
		    }
		    else if(i > 95) {
			msg("Oh no!!! You drown in the pool!!! --More--");
			wait_for(cw,' ');
			death(D_DROWN);
		    }
		}
	    }
	    else {
		if (i < 60) {
		    if (can_see) {
			/* Drowns */
			if (i < 30) msg("The %s drowned in the pool!", mname);

			/* Teleported to another level */
			else msg("The %s disappeared!", mname);
		    }
		    killed(mitem, FALSE, FALSE);
		}
	    }
	}
    when MAZETRAP:
	if (is_player) {
	    pstats.s_hpt -= roll(1, 10);
	    level++;
	    msg("You fell through a trap door!");
	    if (pstats.s_hpt <= 0) death(D_FALL);
	    new_level(MAZELEV);
	    msg("You are surrounded by twisty passages!");
	}
	else {
	    if (can_see) msg("The %s fell into a trap!", mname);
	    killed(mitem, FALSE, FALSE);
	}
    }

    /* Move the cursor back onto the hero */
    wmove(cw, hero.y, hero.x);

    md_flushinp(); /* flush typeahead */

    return(ch);
}

/*
 * blue_light:
 *	magically light up a room (or level or make it dark)
 */

bool
blue_light(blessed, cursed)
bool blessed, cursed;
{
    register struct room *rp;
    bool ret_val=FALSE;	/* Whether or not affect is known */

    rp = roomin(&hero);	/* What room is hero in? */

    /* Darken the room if the magic is cursed */
    if (cursed) {
	if ((rp == NULL) || !lit_room(rp)) msg(nothing);
	else {
	    rp->r_flags |= ISDARK;
	    if (!lit_room(rp) && (levtype != OUTSIDE || !daytime))
		msg("The %s suddenly goes dark.",
			levtype == OUTSIDE ? "area" : "room");
	    else msg(nothing);
	    ret_val = TRUE;
	}
    }
    else {
	ret_val = TRUE;
	if (rp && !lit_room(rp) &&
	    (levtype != OUTSIDE || !daytime)) {
	    addmsg("The %s is lit", levtype == OUTSIDE ? "area" : "room");
	    if (!terse)
		addmsg(" by a %s blue light.",
		    blessed ? "bright" : "shimmering");
	    endmsg();
	}
	else if (winat(hero.y, hero.x) == PASSAGE)
	    msg("The corridor glows %sand then fades",
		    blessed ? "brightly " : "");
	else {
	    ret_val = FALSE;
	    msg(nothing);
	}
	if (blessed) {
	    register int i;	/* Index through rooms */

	    for (i=0; i<MAXROOMS; i++)
		rooms[i].r_flags &= ~ISDARK;
	}
	else if (rp) rp->r_flags &= ~ISDARK;
    }

    /*
     * Light the room and put the player back up
     */
    light(&hero);
    mvwaddch(cw, hero.y, hero.x, PLAYER);
    return(ret_val);
}

/*
 * corr_move:
 *	Check to see that a move is legal.  If so, return correct character.