--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rogue3/fight.c	Tue Oct 13 13:33:34 2009 +0000
@@ -0,0 +1,737 @@
+/*
+ * All the fighting gets done here
+ *
+ * @(#)fight.c	3.28 (Berkeley) 6/15/81
+ *
+ * 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 <string.h>
+#include <stdlib.h>
+#include "rogue.h"
+
+int e_levels[] = {
+    10,20,40,80,160,320,640,1280,2560,5120,10240,20480,
+    40920, 81920, 163840, 327680, 655360, 1310720, 2621440, 0 };
+
+/*
+ * fight:
+ *	The player attacks the monster.
+ */
+
+int
+fight(coord *mp, int mn, struct object *weap, int thrown)
+{
+    struct thing *tp;
+    struct linked_list *item;
+    int did_hit = TRUE;
+
+    /*
+     * Find the monster we want to fight
+     */
+    if ((item = find_mons(mp->y, mp->x)) == NULL)
+    {
+	debug("Fight what @ %d,%d", mp->y, mp->x);
+	return(0);
+    }
+    tp = (struct thing *) ldata(item);
+    /*
+     * Since we are fighting, things are not quiet so no healing takes
+     * place.
+     */
+    quiet = 0;
+    runto(mp, &hero);
+    /*
+     * Let him know it was really a mimic (if it was one).
+     */
+    if (tp->t_type == 'M' && tp->t_disguise != 'M' && off(player, ISBLIND))
+    {
+	msg("Wait! That's a mimic!");
+	tp->t_disguise = 'M';
+	did_hit = thrown;
+    }
+    if (did_hit)
+    {
+	char *mname;
+
+	did_hit = FALSE;
+	if (on(player, ISBLIND))
+	    mname = "it";
+	else
+	    mname = monsters[mn-'A'].m_name;
+	if (roll_em(&pstats, &tp->t_stats, weap, thrown))
+	{
+	    did_hit = TRUE;
+	    if (thrown)
+		thunk(weap, mname);
+	    else
+		hit(NULL, mname);
+	    if (on(player, CANHUH))
+	    {
+		msg("Your hands stop glowing red");
+		msg("The %s appears confused.", mname);
+		tp->t_flags |= ISHUH;
+		player.t_flags &= ~CANHUH;
+	    }
+	    if (tp->t_stats.s_hpt <= 0)
+		killed(item, TRUE);
+	}
+	else
+	    if (thrown)
+		bounce(weap, mname);
+	    else
+		miss(NULL, mname);
+    }
+    count = 0;
+    return did_hit;
+}
+
+/*
+ * attack:
+ *	The monster attacks the player
+ */
+
+int
+attack(struct thing *mp)
+{
+    char *mname;
+
+    /*
+     * Since this is an attack, stop running and any healing that was
+     * going on at the time.
+     */
+    running = FALSE;
+    quiet = 0;
+    if (mp->t_type == 'M' && off(player, ISBLIND))
+	mp->t_disguise = 'M';
+    if (on(player, ISBLIND))
+	mname = "it";
+    else
+	mname = monsters[mp->t_type-'A'].m_name;
+    if (roll_em(&mp->t_stats, &pstats, NULL, FALSE))
+    {
+	if (mp->t_type != 'E')
+	    hit(mname, NULL);
+	if (pstats.s_hpt <= 0)
+	    death(mp->t_type);	/* Bye bye life ... */
+	if (off(*mp, ISCANC))
+	    switch (mp->t_type)
+	    {
+		case 'R':
+		    /*
+		     * If a rust monster hits, you lose armor
+		     */
+		    if (cur_armor != NULL && cur_armor->o_ac < 9)
+		    {
+			if (!terse)
+			    msg("Your armor appears to be weaker now. Oh my!");
+			else
+			    msg("Your armor weakens");
+			cur_armor->o_ac++;
+		    }
+		when 'E':
+		    /*
+		     * The gaze of the floating eye hypnotizes you
+		     */
+		    if (on(player, ISBLIND))
+			break;
+		    if (!no_command)
+		    {
+			addmsg("You are transfixed");
+			if (!terse)
+			    addmsg(" by the gaze of the floating eye.");
+			endmsg();
+		    }
+		    no_command += rnd(2)+2;
+		    if (no_command > 100 && food_left <= 0)
+		    	death('E');
+		when 'A':
+		    /*
+		     * Ants have poisonous bites
+		     */
+		    if (!save(VS_POISON))
+			if (!ISWEARING(R_SUSTSTR))
+			{
+			    chg_str(-1);
+			    if (!terse)
+				msg("You feel a sting in your arm and now feel weaker");
+			    else
+				msg("A sting has weakened you");
+			}
+			else
+			    if (!terse)
+				msg("A sting momentarily weakens you");
+			    else
+				msg("Sting has no effect");
+		when 'W':
+		    /*
+		     * Wraiths might drain energy levels
+		     */
+		    if (rnd(100) < 15)
+		    {
+			int fewer;
+
+			if (pstats.s_exp == 0)
+			    death('W');		/* All levels gone */
+			msg("You suddenly feel weaker.");
+			if (--pstats.s_lvl == 0)
+			{
+			    pstats.s_exp = 0;
+			    pstats.s_lvl = 1;
+			}
+			else
+			    pstats.s_exp = e_levels[pstats.s_lvl-1]+1;
+			fewer = roll(1, 10);
+			pstats.s_hpt -= fewer;
+			max_hp -= fewer;
+			if (pstats.s_hpt < 1)
+			    pstats.s_hpt = 1;
+			if (max_hp < 1)
+			    death('W');
+		    }
+		when 'F':
+		    /*
+		     * Violet fungi stops the poor guy from moving
+		     */
+		    player.t_flags |= ISHELD;
+		    sprintf(monsters['F'-'A'].m_stats.s_dmg,"%dd1",++fung_hit);
+		when 'L':
+		{
+		    /*
+		     * Leperachaun steals some gold
+		     */
+		    int lastpurse;
+
+		    lastpurse = purse;
+		    purse -= GOLDCALC;
+		    if (!save(VS_MAGIC))
+			purse -= GOLDCALC + GOLDCALC + GOLDCALC + GOLDCALC;
+		    if (purse < 0)
+			purse = 0;
+		    if (purse != lastpurse)
+			msg("Your purse feels lighter");
+		    remove_monster(&mp->t_pos, find_mons(mp->t_pos.y, mp->t_pos.x));
+		    mp = NULL;
+		}
+		when 'N':
+		{
+		    struct linked_list *list, *steal;
+		    struct object *obj;
+		    int nobj;
+
+		    /*
+		     * Nymph's steal a magic item, look through the pack
+		     * and pick out one we like.
+		     */
+		    steal = NULL;
+		    for (nobj = 0, list = pack; list != NULL; list = next(list))
+		    {
+			obj = (struct object *) ldata(list);
+			if (obj != cur_armor && 
+                            obj != cur_weapon &&
+                            obj != cur_ring[LEFT] &&
+                            obj != cur_ring[RIGHT] && /* Nymph bug fix */
+			    is_magic(obj) && 
+                            rnd(++nobj) == 0)
+				steal = list;
+		    }
+		    if (steal != NULL)
+		    {
+			struct object *sobj;
+
+			sobj = (struct object *) ldata(steal);
+			remove_monster(&mp->t_pos, find_mons(mp->t_pos.y, mp->t_pos.x));
+			mp = NULL;
+			if (sobj->o_count > 1 && sobj->o_group == 0)
+			{
+			    int oc;
+
+			    oc = sobj->o_count;
+			    sobj->o_count = 1;
+			    msg("She stole %s!", inv_name(sobj, TRUE));
+			    sobj->o_count = oc - 1;
+			}
+			else
+			{
+			    msg("She stole %s!", inv_name(sobj, TRUE));
+			    detach(pack, steal);
+			    discard(steal);
+			}
+			inpack--;
+		    }
+		}
+		otherwise:
+		    break;
+	    }
+    }
+    else if (mp->t_type != 'E')
+    {
+	if (mp->t_type == 'F')
+	{
+	    pstats.s_hpt -= fung_hit;
+	    if (pstats.s_hpt <= 0)
+		death(mp->t_type);	/* Bye bye life ... */
+	}
+	miss(mname, NULL);
+    }
+    /*
+     * Check to see if this is a regenerating monster and let it heal if
+     * it is.
+     */
+    if ((mp != NULL) && (on(*mp, ISREGEN) && rnd(100) < 33))
+	mp->t_stats.s_hpt++;
+    if (fight_flush)
+    {
+	flush_type();	/* flush typeahead */
+    }
+    count = 0;
+    status();
+
+    if (mp == NULL)
+        return(-1);
+    else
+        return(0);
+}
+
+/*
+ * swing:
+ *	returns true if the swing hits
+ */
+
+int
+swing(int at_lvl, int op_arm, int wplus)
+{
+    int res = rnd(20)+1;
+    int need = (21-at_lvl)-op_arm;
+
+    return (res+wplus >= need);
+}
+
+/*
+ * check_level:
+ *	Check to see if the guy has gone up a level.
+ */
+
+void
+check_level()
+{
+    int i, add;
+
+    for (i = 0; e_levels[i] != 0; i++)
+	if (e_levels[i] > pstats.s_exp)
+	    break;
+    i++;
+    if (i > pstats.s_lvl)
+    {
+	add = roll(i-pstats.s_lvl,10);
+	max_hp += add;
+	if ((pstats.s_hpt += add) > max_hp)
+	    pstats.s_hpt = max_hp;
+	msg("Welcome to level %d", i);
+    }
+    pstats.s_lvl = i;
+}
+
+/*
+ * roll_em:
+ *	Roll several attacks
+ */
+
+int
+roll_em(struct stats *att, struct stats *def, struct object *weap, int hurl)
+{
+    char *cp;
+    int ndice, nsides, def_arm;
+    int did_hit = FALSE;
+    int prop_hplus, prop_dplus;
+
+    prop_hplus = prop_dplus = 0;
+    if (weap == NULL)
+	cp = att->s_dmg;
+    else if (hurl)
+	if ((weap->o_flags&ISMISL) && cur_weapon != NULL &&
+	  cur_weapon->o_which == weap->o_launch)
+	{
+	    cp = weap->o_hurldmg;
+	    prop_hplus = cur_weapon->o_hplus;
+	    prop_dplus = cur_weapon->o_dplus;
+	}
+	else
+	    cp = (weap->o_flags&ISMISL ? weap->o_damage : weap->o_hurldmg);
+    else
+    {
+	cp = weap->o_damage;
+	/*
+	 * Drain a staff of striking
+	 */
+	if (weap->o_type == STICK && weap->o_which == WS_HIT
+	    && weap->o_charges == 0)
+		{
+		    strcpy(weap->o_damage,"0d0");
+		    weap->o_hplus = weap->o_dplus = 0;
+		}
+    }
+    for (;;)
+    {
+	int damage;
+	int hplus = prop_hplus + (weap == NULL ? 0 : weap->o_hplus);
+	int dplus = prop_dplus + (weap == NULL ? 0 : weap->o_dplus);
+
+	if (weap == cur_weapon)
+	{
+	    if (ISRING(LEFT, R_ADDDAM))
+		dplus += cur_ring[LEFT]->o_ac;
+	    else if (ISRING(LEFT, R_ADDHIT))
+		hplus += cur_ring[LEFT]->o_ac;
+	    if (ISRING(RIGHT, R_ADDDAM))
+		dplus += cur_ring[RIGHT]->o_ac;
+	    else if (ISRING(RIGHT, R_ADDHIT))
+		hplus += cur_ring[RIGHT]->o_ac;
+	}
+	ndice = atoi(cp);
+	if ((cp = strchr(cp, 'd')) == NULL)
+	    break;
+	nsides = atoi(++cp);
+	if (def == &pstats)
+	{
+	    if (cur_armor != NULL)
+		def_arm = cur_armor->o_ac;
+	    else
+		def_arm = def->s_arm;
+	    if (ISRING(LEFT, R_PROTECT))
+		def_arm -= cur_ring[LEFT]->o_ac;
+	    else if (ISRING(RIGHT, R_PROTECT))
+		def_arm -= cur_ring[RIGHT]->o_ac;
+	}
+	else
+	    def_arm = def->s_arm;
+	if (swing(att->s_lvl, def_arm, hplus+str_plus(&att->s_str)))
+	{
+	    int proll;
+
+	    proll = roll(ndice, nsides);
+	    if (ndice + nsides > 0 && proll < 1)
+		debug("Damage for %dd%d came out %d.", ndice, nsides, proll);
+	    damage = dplus + proll + add_dam(&att->s_str);
+	    def->s_hpt -= max(0, damage);
+	    did_hit = TRUE;
+	}
+	if ((cp = strchr(cp, '/')) == NULL)
+	    break;
+	cp++;
+    }
+    return did_hit;
+}
+
+/*
+ * prname:
+ *	The print name of a combatant
+ */
+
+char *
+prname(who, upper)
+char *who;
+int upper;
+{
+    static char tbuf[80];
+
+    *tbuf = '\0';
+    if (who == 0)
+	strcpy(tbuf, "you"); 
+    else if (on(player, ISBLIND))
+	strcpy(tbuf, "it");
+    else
+    {
+	strcpy(tbuf, "the ");
+	strcat(tbuf, who);
+    }
+    if (upper)
+	*tbuf = toupper(*tbuf);
+    return tbuf;
+}
+
+/*
+ * hit:
+ *	Print a message to indicate a succesful hit
+ */
+
+void
+hit(char *er, char *ee)
+{
+    char *s = "";
+
+    addmsg(prname(er, TRUE));
+    if (terse)
+	s = " hit.";
+    else
+	switch (rnd(4))
+	{
+	    case 0: s = " scored an excellent hit on ";
+	    when 1: s = " hit ";
+	    when 2: s = (er == 0 ? " have injured " : " has injured ");
+	    when 3: s = (er == 0 ? " swing and hit " : " swings and hits ");
+	}
+    addmsg(s);
+    if (!terse)
+	addmsg(prname(ee, FALSE));
+    endmsg();
+}
+
+/*
+ * miss:
+ *	Print a message to indicate a poor swing
+ */
+
+void
+miss(char *er, char *ee)
+{
+    char *s = "";
+
+    addmsg(prname(er, TRUE));
+    switch (terse ? 0 : rnd(4))
+    {
+	case 0: s = (er == 0 ? " miss" : " misses");
+	when 1: s = (er == 0 ? " swing and miss" : " swings and misses");
+	when 2: s = (er == 0 ? " barely miss" : " barely misses");
+	when 3: s = (er == 0 ? " don't hit" : " doesn't hit");
+    }
+    addmsg(s);
+    if (!terse)
+	addmsg(" %s", prname(ee, FALSE));
+    endmsg();
+}
+
+/*
+ * save_throw:
+ *	See if a creature save against something
+ */
+int
+save_throw(int which, struct thing *tp)
+{
+    int need;
+
+    need = 14 + which - tp->t_stats.s_lvl / 2;
+    return (roll(1, 20) >= need);
+}
+
+/*
+ * save:
+ *	See if he saves against various nasty things
+ */
+
+int
+save(int which)
+{
+    return save_throw(which, &player);
+}
+
+/*
+ * str_plus:
+ *	compute bonus/penalties for strength on the "to hit" roll
+ */
+
+int
+str_plus(str_t *str)
+{
+    if (str->st_str == 18)
+    {
+	if (str->st_add == 100)
+	    return 3;
+	if (str->st_add > 50)
+	    return 2;
+    }
+    if (str->st_str >= 17)
+	return 1;
+    if (str->st_str > 6)
+	return 0;
+    return str->st_str - 7;
+}
+
+/*
+ * add_dam:
+ *	compute additional damage done for exceptionally high or low strength
+ */
+
+ int
+ add_dam(str_t *str)
+ {
+    if (str->st_str == 18)
+    {
+	if (str->st_add == 100)
+	    return 6;
+	if (str->st_add > 90)
+	    return 5;
+	if (str->st_add > 75)
+	    return 4;
+	if (str->st_add != 0)
+	    return 3;
+	return 2;
+    }
+    if (str->st_str > 15)
+	return 1;
+    if (str->st_str > 6)
+	return 0;
+    return str->st_str - 7;
+}
+
+/*
+ * raise_level:
+ *	The guy just magically went up a level.
+ */
+
+void
+raise_level()
+{
+    pstats.s_exp = e_levels[pstats.s_lvl-1] + 1L;
+    check_level();
+}
+
+/*
+ * thunk:
+ *	A missile hits a monster
+ */
+
+void
+thunk(struct object *weap, char *mname)
+{
+    if (weap->o_type == WEAPON)
+	msg("The %s hits the %s", w_names[weap->o_which], mname);
+    else
+	msg("You hit the %s.", mname);
+}
+
+/*
+ * bounce:
+ *	A missile misses a monster
+ */
+
+void
+bounce(struct object *weap, char *mname)
+{
+    if (weap->o_type == WEAPON)
+	msg("The %s misses the %s", w_names[weap->o_which], mname);
+    else
+	msg("You missed the %s.", mname);
+}
+
+/*
+ * remove a monster from the screen
+ */
+void
+remove_monster(coord *mp, struct linked_list *item)
+{
+    mvwaddch(mw, mp->y, mp->x, ' ');
+    mvwaddch(cw, mp->y, mp->x, ((struct thing *) ldata(item))->t_oldch);
+    detach(mlist, item);
+    discard(item);
+}
+
+/*
+ * is_magic:
+ *	Returns true if an object radiates magic
+ */
+
+int
+is_magic(struct object *obj)
+{
+    switch (obj->o_type)
+    {
+	case ARMOR:
+	    return obj->o_ac != a_class[obj->o_which];
+	when WEAPON:
+	    return obj->o_hplus != 0 || obj->o_dplus != 0;
+	when POTION:
+	case SCROLL:
+	case STICK:
+	case RING:
+	case AMULET:
+	    return TRUE;
+    }
+    return FALSE;
+}
+
+/*
+ * killed:
+ *	Called to put a monster to death
+ */
+
+void
+killed(struct linked_list *item, int pr)
+{
+    struct thing *tp;
+    struct linked_list *pitem, *nexti;
+
+    tp = (struct thing *) ldata(item);
+    if (pr)
+    {
+	addmsg(terse ? "Defeated " : "You have defeated ");
+	if (on(player, ISBLIND))
+	    msg("it.");
+	else
+	{
+	    if (!terse)
+		addmsg("the ");
+	    msg("%s.", monsters[tp->t_type-'A'].m_name);
+	}
+    }
+    pstats.s_exp += tp->t_stats.s_exp;
+    /*
+     * Do adjustments if he went up a level
+     */
+    check_level();
+    /*
+     * If the monster was a violet fungi, un-hold him
+     */
+    switch (tp->t_type)
+    {
+	case 'F':
+	    player.t_flags &= ~ISHELD;
+	    fung_hit = 0;
+	    strcpy(monsters['F'-'A'].m_stats.s_dmg, "000d0");
+	when 'L':
+	{
+	    struct room *rp;
+
+	    if ((rp = roomin(&tp->t_pos)) == NULL)
+		break;
+	    if (rp->r_goldval != 0 || fallpos(&tp->t_pos,&rp->r_gold,FALSE))
+	    {
+		rp->r_goldval += GOLDCALC;
+		if (save(VS_MAGIC))
+		    rp->r_goldval += GOLDCALC + GOLDCALC
+				   + GOLDCALC + GOLDCALC;
+		mvwaddch(stdscr, rp->r_gold.y, rp->r_gold.x, GOLD);
+		if (!(rp->r_flags & ISDARK))
+		{
+		    light(&hero);
+		    mvwaddch(cw, hero.y, hero.x, PLAYER);
+		}
+	    }
+	}
+    }
+    /*
+     * Empty the monsters pack
+     */
+    pitem = tp->t_pack;
+    while (pitem != NULL)
+    {
+	struct object *obj;
+
+	nexti = next(tp->t_pack);
+	obj = (struct object *) ldata(pitem);
+	obj->o_pos = tp->t_pos;
+	detach(tp->t_pack, pitem);
+	fall(pitem, FALSE);
+	pitem = nexti;
+    }
+    /*
+     * Get rid of the monster.
+     */
+    remove_monster(&tp->t_pos, item);
+}