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Source:NetHack 3.3.0/mthrowu.c

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Below is the full text to mthrowu.c from the source code of NetHack 3.3.0. To link to a particular line, write [[NetHack 3.3.0/mthrowu.c#line123]], for example.

Warning! This is the source code from an old release. For the latest release, see Source code

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1.    /*	SCCS Id: @(#)mthrowu.c	3.3	1999/08/16	*/
2.    /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
3.    /* NetHack may be freely redistributed.  See license for details. */
4.    
5.    #include "hack.h"
6.    
7.    STATIC_DCL int FDECL(drop_throw,(struct obj *,BOOLEAN_P,int,int));
8.    
9.    #define URETREATING(x,y) (distmin(u.ux,u.uy,x,y) > distmin(u.ux0,u.uy0,x,y))
10.   
11.   #define POLE_LIM 5	/* How far monsters can use pole-weapons */
12.   
13.   #ifndef OVLB
14.   
15.   STATIC_DCL const char *breathwep[];
16.   
17.   #else /* OVLB */
18.   
19.   /*
20.    * Keep consistent with breath weapons in zap.c, and AD_* in monattk.h.
21.    */
22.   STATIC_OVL NEARDATA const char *breathwep[] = {
23.   				"fragments",
24.   				"fire",
25.   				"frost",
26.   				"sleep gas",
27.   				"a disintegration blast",
28.   				"lightning",
29.   				"poison gas",
30.   				"acid",
31.   				"strange breath #8",
32.   				"strange breath #9"
33.   };
34.   
35.   
36.   int
37.   thitu(tlev, dam, obj, name)	/* u is hit by sth, but not a monster */
38.   	register int tlev, dam;
39.   	struct obj *obj;
40.   	register const char *name;
41.   {
42.   	const char *onm = (obj && obj_is_pname(obj)) ? the(name) :
43.   			    (obj && obj->quan > 1) ? name : an(name);
44.   	boolean is_acid = (obj && obj->otyp == ACID_VENOM);
45.   
46.   	if(u.uac + tlev <= rnd(20)) {
47.   		if(Blind || !flags.verbose) pline("It misses.");
48.   		else You("are almost hit by %s!", onm);
49.   		return(0);
50.   	} else {
51.   		if(Blind || !flags.verbose) You("are hit!");
52.   		else You("are hit by %s!", onm);
53.   
54.   		if (obj && objects[obj->otyp].oc_material == SILVER
55.   				&& hates_silver(youmonst.data)) {
56.   			dam += rnd(20);
57.   			pline_The("silver sears your flesh!");
58.   			exercise(A_CON, FALSE);
59.   		}
60.   		if (is_acid && Acid_resistance)
61.   			pline("It doesn't seem to hurt you.");
62.   		else {
63.   			if (is_acid) pline("It burns!");
64.   			if (Half_physical_damage) dam = (dam+1) / 2;
65.   			losehp(dam, name, (obj && obj_is_pname(obj)) ?
66.   			       KILLED_BY : KILLED_BY_AN);
67.   			exercise(A_STR, FALSE);
68.   		}
69.   		return(1);
70.   	}
71.   }
72.   
73.   /* Be sure this corresponds with what happens to player-thrown objects in
74.    * dothrow.c (for consistency). --KAA
75.    * Returns 0 if object still exists (not destroyed).
76.    */
77.   
78.   STATIC_OVL int
79.   drop_throw(obj, ohit, x, y)
80.   register struct obj *obj;
81.   boolean ohit;
82.   int x,y;
83.   {
84.   	int retvalu = 1;
85.   	int create;
86.   	struct monst *mtmp;
87.   	struct trap *t;
88.   
89.   	if (obj->otyp == CREAM_PIE || obj->oclass == VENOM_CLASS ||
90.   		    (ohit && obj->otyp == EGG))
91.   		create = 0;
92.   	else if (ohit && (is_multigen(obj) || obj->otyp == ROCK))
93.   		create = !rn2(3);
94.   	else create = 1;
95.   
96.   	if (create && !((mtmp = m_at(x, y)) && (mtmp->mtrapped) &&
97.   			(t = t_at(x, y)) && ((t->ttyp == PIT) ||
98.   			(t->ttyp == SPIKED_PIT)))) {
99.   		int objgone = 0;
100.  
101.  		if (down_gate(x, y) != -1)
102.  			objgone = ship_object(obj, x, y, FALSE);
103.  		if (!objgone) {
104.  			if (!flooreffects(obj,x,y,"fall")) { /* don't double-dip on damage */
105.  			    place_object(obj, x, y);
106.  			    stackobj(obj);
107.  			    retvalu = 0;
108.  			}
109.  		}
110.  	} else obfree(obj, (struct obj*) 0);
111.  	return retvalu;
112.  }
113.  
114.  #endif /* OVLB */
115.  #ifdef OVL1
116.  
117.  /* an object launched by someone/thing other than player attacks a monster;
118.     return 1 if the object has stopped moving (hit or its range used up) */
119.  int
120.  ohitmon(mtmp, otmp, range, verbose)
121.  struct monst *mtmp;	/* accidental target */
122.  struct obj *otmp;	/* missile; might be destroyed by drop_throw */
123.  int range;		/* how much farther will object travel if it misses */
124.  			/* Use -1 to signify to keep going even after hit, */
125.  			/* unless its gone (used for rolling_boulder_traps) */
126.  boolean verbose;  /* give message(s) even when you can't see what happened */
127.  {
128.  	int damage, tmp;
129.  	boolean vis, ismimic;
130.  	int objgone = 1;
131.  
132.  	ismimic = mtmp->m_ap_type && mtmp->m_ap_type != M_AP_MONSTER;
133.  	vis = cansee(bhitpos.x, bhitpos.y);
134.  
135.  	tmp = 5 + find_mac(mtmp) + omon_adj(mtmp, otmp, FALSE);
136.  	if (tmp < rnd(20)) {
137.  	    if (!ismimic) {
138.  		if (vis) miss(distant_name(otmp, xname), mtmp);
139.  		else if (verbose) pline("It is missed.");
140.  	    }
141.  	    if (!range) { /* Last position; object drops */
142.  		(void) drop_throw(otmp, 0, mtmp->mx, mtmp->my);
143.  		return 1;
144.  	    }
145.  	} else if (otmp->oclass == POTION_CLASS) {
146.  	    if (ismimic) seemimic(mtmp);
147.  	    mtmp->msleeping = 0;
148.  	    if (vis) otmp->dknown = 1;
149.  	    potionhit(mtmp, otmp, FALSE);
150.  	    return 1;
151.  	} else {
152.  	    damage = dmgval(otmp, mtmp);
153.  	    if (otmp->otyp == ACID_VENOM && resists_acid(mtmp))
154.  		damage = 0;
155.  	    if (ismimic) seemimic(mtmp);
156.  	    mtmp->msleeping = 0;
157.  	    if (vis) hit(distant_name(otmp,xname), mtmp, exclam(damage));
158.  	    else if (verbose) pline("It is hit%s", exclam(damage));
159.  
160.  	    if (otmp->opoisoned) {
161.  		if (resists_poison(mtmp)) {
162.  		    if (vis) pline_The("poison doesn't seem to affect %s.",
163.  				   mon_nam(mtmp));
164.  		} else {
165.  		    if (rn2(30)) {
166.  			damage += rnd(6);
167.  		    } else {
168.  			if (vis) pline_The("poison was deadly...");
169.  			damage = mtmp->mhp;
170.  		    }
171.  		}
172.  	    }
173.  	    if (objects[otmp->otyp].oc_material == SILVER &&
174.  		    hates_silver(mtmp->data)) {
175.  		if (vis) pline_The("silver sears %s flesh!",
176.  				s_suffix(mon_nam(mtmp)));
177.  		else if (verbose) pline("Its flesh is seared!");
178.  	    }
179.  	    if (otmp->otyp == ACID_VENOM && cansee(mtmp->mx,mtmp->my)) {
180.  		if (resists_acid(mtmp)) {
181.  		    if (vis || verbose)
182.  			pline("%s is unaffected.", Monnam(mtmp));
183.  		    damage = 0;
184.  		} else {
185.  		    if (vis) pline_The("acid burns %s!", mon_nam(mtmp));
186.  		    else if (verbose) pline("It is burned!");
187.  		}
188.  	    }
189.  	    mtmp->mhp -= damage;
190.  	    if (mtmp->mhp < 1) {
191.  		if (vis || verbose)
192.  		    pline("%s is %s!", Monnam(mtmp),
193.  			(nonliving(mtmp->data) || !vis)
194.  			? "destroyed" : "killed");
195.  		mondied(mtmp);
196.  	    }
197.  
198.  	    if ((otmp->otyp == CREAM_PIE || otmp->otyp == BLINDING_VENOM) &&
199.  		   haseyes(mtmp->data)) {
200.  		/* note: resists_blnd() doesn't apply here */
201.  		if (vis) pline("%s is blinded by %s.",
202.  				Monnam(mtmp), the(xname(otmp)));
203.  		mtmp->mcansee = 0;
204.  		tmp = (int)mtmp->mblinded + rnd(25) + 20;
205.  		if (tmp > 127) tmp = 127;
206.  		mtmp->mblinded = tmp;
207.  	    }
208.  
209.  	    objgone = drop_throw(otmp, 1, bhitpos.x, bhitpos.y);
210.  	    if (!objgone && range == -1) {  /* special case */
211.  		    obj_extract_self(otmp); /* free it for motion again */
212.  		    return 0;
213.  	    }
214.  	    return 1;
215.  	}
216.  	return 0;
217.  }
218.  
219.  void
220.  m_throw(mon, x, y, dx, dy, range, obj)
221.  	register struct monst *mon;
222.  	register int x,y,dx,dy,range;		/* direction and range */
223.  	register struct obj *obj;
224.  {
225.  	register struct monst *mtmp;
226.  	struct obj *singleobj;
227.  	char sym = obj->oclass;
228.  	int hitu, blindinc = 0;
229.  
230.  	bhitpos.x = x;
231.  	bhitpos.y = y;
232.  
233.  	if (obj->quan == 1L) {
234.  	    /*
235.  	     * Remove object from minvent.  This cannot be done later on;
236.  	     * what if the player dies before then, leaving the monster
237.  	     * with 0 daggers?  (This caused the infamous 2^32-1 orcish
238.  	     * dagger bug).
239.  	     *
240.  	     * VENOM is not in minvent - it should already be OBJ_FREE.
241.  	     * The extract below does nothing.
242.  	     */
243.  
244.  	    /* not possibly_unwield, which checks the object's */
245.  	    /* location, not its existence */
246.  	    if (MON_WEP(mon) == obj) {
247.  		    obj->owornmask &= ~W_WEP;
248.  		    MON_NOWEP(mon);
249.  	    }
250.  	    obj_extract_self(obj);
251.  	    singleobj = obj;
252.  	    obj = (struct obj *) 0;
253.  	} else {
254.  	    singleobj = splitobj(obj, obj->quan - 1L);
255.  	    obj_extract_self(singleobj);
256.  	}
257.  
258.  	singleobj->owornmask = 0; /* threw one of multiple weapons in hand? */
259.  
260.  	if (singleobj->cursed && (dx || dy) && !rn2(7)) {
261.  	    if(canseemon(mon) && flags.verbose) {
262.  		if(is_ammo(singleobj))
263.  		    pline("%s misfires!", Monnam(mon));
264.  		else
265.  		    pline("%s slips as %s throws it!",
266.  			  The(xname(singleobj)), mon_nam(mon));
267.  	    }
268.  	    dx = rn2(3)-1;
269.  	    dy = rn2(3)-1;
270.  	    /* pre-check validity of new direction */
271.  	    if((!dx && !dy)
272.  	       || !isok(bhitpos.x+dx,bhitpos.y+dy)
273.  	       /* missile hits the wall */
274.  	       || IS_ROCK(levl[bhitpos.x+dx][bhitpos.y+dy].typ)) {
275.  		(void) drop_throw(singleobj, 0, bhitpos.x, bhitpos.y);
276.  		return;
277.  	    }
278.  	}
279.  
280.  	/* Note: drop_throw may destroy singleobj.  Since obj must be destroyed
281.  	 * early to avoid the dagger bug, anyone who modifies this code should
282.  	 * be careful not to use either one after it's been freed.
283.  	 */
284.  	if (sym) tmp_at(DISP_FLASH, obj_to_glyph(singleobj));
285.  	while(range-- > 0) { /* Actually the loop is always exited by break */
286.  		bhitpos.x += dx;
287.  		bhitpos.y += dy;
288.  		if ((mtmp = m_at(bhitpos.x, bhitpos.y)) != 0) {
289.  		    if (ohitmon(mtmp, singleobj, range, TRUE))
290.  			break;
291.  		} else if (bhitpos.x == u.ux && bhitpos.y == u.uy) {
292.  		    if (multi) nomul(0);
293.  
294.  		    if (singleobj->oclass == GEM_CLASS &&
295.  			    singleobj->otyp <= LAST_GEM+9 /* 9 glass colors */
296.  			    && is_unicorn(youmonst.data)) {
297.  			if (singleobj->otyp > LAST_GEM) {
298.  			    You("catch the %s.", xname(singleobj));
299.  			    You("are not interested in %s junk.",
300.  				s_suffix(mon_nam(mon)));
301.  			    makeknown(singleobj->otyp);
302.  			    dropy(singleobj);
303.  			} else {
304.  			    You("accept %s gift in the spirit in which it was intended.",
305.  				s_suffix(mon_nam(mon)));
306.  			    (void)hold_another_object(singleobj,
307.  				"You catch, but drop, %s.", xname(singleobj),
308.  				"You catch:");
309.  			}
310.  			break;
311.  		    }
312.  		    if (singleobj->oclass == POTION_CLASS) {
313.  			if (!Blind) singleobj->dknown = 1;
314.  			potionhit(&youmonst, singleobj, FALSE);
315.  			break;
316.  		    }
317.  		    switch(singleobj->otyp) {
318.  			int dam, hitv;
319.  			case EGG:
320.  			    if (!touch_petrifies(&mons[singleobj->corpsenm])) {
321.  				impossible("monster throwing egg type %d",
322.  					singleobj->corpsenm);
323.  				hitu = 0;
324.  				break;
325.  			    }
326.  			    /* fall through */
327.  			case CREAM_PIE:
328.  			case BLINDING_VENOM:
329.  			    hitu = thitu(8, 0, singleobj, xname(singleobj));
330.  			    break;
331.  			default:
332.  			    dam = dmgval(singleobj, &youmonst);
333.  			    hitv = 3 - distmin(u.ux,u.uy, mon->mx,mon->my);
334.  			    if (hitv < -4) hitv = -4;
335.  			    if (is_elf(mon->data) &&
336.  				objects[singleobj->otyp].oc_skill == P_BOW) {
337.  				hitv++;
338.  				if (MON_WEP(mon) &&
339.  				    MON_WEP(mon)->otyp == ELVEN_BOW)
340.  				    hitv++;
341.  				if(singleobj->otyp == ELVEN_ARROW) dam++;
342.  			    }
343.  			    if (bigmonst(youmonst.data)) hitv++;
344.  			    hitv += 8+singleobj->spe;
345.  
346.  			    if (dam < 1) dam = 1;
347.  			    hitu = thitu(hitv, dam,
348.  				    singleobj, xname(singleobj));
349.  		    }
350.  		    if (hitu && singleobj->opoisoned) {
351.  			char *singlename = xname(singleobj);
352.  			poisoned(singlename, A_STR, singlename, 10);
353.  		    }
354.  		    if(hitu && (singleobj->otyp == CREAM_PIE ||
355.  				 singleobj->otyp == BLINDING_VENOM)) {
356.  			blindinc = rnd(25);
357.  			if(singleobj->otyp == CREAM_PIE) {
358.  			    if(!Blind) pline("Yecch!  You've been creamed.");
359.  			    else	pline("There's %s sticky all over your %s.",
360.  					    something,
361.  					    body_part(FACE));
362.  			} else {	/* venom in the eyes */
363.  			    if(ublindf) /* nothing */ ;
364.  			    else if(!Blind) pline_The("venom blinds you.");
365.  			    else Your("%s sting.", makeplural(body_part(EYE)));
366.  			}
367.  		    }
368.  		    if (hitu && singleobj->otyp == EGG) {
369.  			if (!Stone_resistance
370.  				&& !(poly_when_stoned(youmonst.data) &&
371.  				    polymon(PM_STONE_GOLEM)))
372.  			    Stoned = 5;
373.  		    }
374.  		    stop_occupation();
375.  		    if (hitu || !range) {
376.  			(void) drop_throw(singleobj, hitu, u.ux, u.uy);
377.  			break;
378.  		    }
379.  		} else if (!range	/* reached end of path */
380.  			/* missile hits edge of screen */
381.  			|| !isok(bhitpos.x+dx,bhitpos.y+dy)
382.  			/* missile hits the wall */
383.  			|| IS_ROCK(levl[bhitpos.x+dx][bhitpos.y+dy].typ)
384.  #ifdef SINKS
385.  			/* Thrown objects "sink" */
386.  			|| IS_SINK(levl[bhitpos.x][bhitpos.y].typ)
387.  #endif
388.  								) {
389.  		    (void) drop_throw(singleobj, 0, bhitpos.x, bhitpos.y);
390.  		    break;
391.  		}
392.  		tmp_at(bhitpos.x, bhitpos.y);
393.  		delay_output();
394.  	}
395.  	tmp_at(bhitpos.x, bhitpos.y);
396.  	delay_output();
397.  	tmp_at(DISP_END, 0);
398.  	/* blindfolds, towels, & lenses keep substances out of your eyes */
399.  	if (blindinc && !ublindf) {
400.  		u.ucreamed += blindinc;
401.  		make_blinded(Blinded + blindinc,FALSE);
402.  	}
403.  }
404.  
405.  #endif /* OVL1 */
406.  #ifdef OVLB
407.  
408.  /* Remove an item from the monster's inventory and destroy it. */
409.  void
410.  m_useup(mon, obj)
411.  struct monst *mon;
412.  struct obj *obj;
413.  {
414.  	if (obj->quan > 1L) {
415.  		obj->quan--;
416.  	} else {
417.  		obj_extract_self(obj);
418.  		possibly_unwield(mon);
419.  		if (obj->owornmask) {
420.  		    mon->misc_worn_check &= ~obj->owornmask;
421.  		    update_mon_intrinsics(mon, obj, FALSE);
422.  		}
423.  		dealloc_obj(obj);
424.  	}
425.  }
426.  
427.  #endif /* OVLB */
428.  #ifdef OVL1
429.  
430.  void
431.  thrwmu(mtmp)	/* monster throws item at you */
432.  register struct monst *mtmp;
433.  {
434.  	struct obj *otmp;
435.  	register xchar x, y;
436.  	boolean ispole;
437.  	schar skill;
438.  	int multishot = 1;
439.  
440.  
441.  	/* Rearranged beginning so monsters can use polearms not in a line */
442.  	    if (mtmp->weapon_check == NEED_WEAPON || !MON_WEP(mtmp)) {
443.  		mtmp->weapon_check = NEED_RANGED_WEAPON;
444.  		/* mon_wield_item resets weapon_check as appropriate */
445.  		if(mon_wield_item(mtmp) != 0) return;
446.  	    }
447.  
448.  	/* Pick a weapon */
449.  	    otmp = select_rwep(mtmp);
450.  	if (!otmp) return;
451.  	ispole = is_pole(otmp);
452.  	skill = objects[otmp->otyp].oc_skill;
453.  
454.  	if(ispole || lined_up(mtmp)) {
455.  		/* If you are coming toward the monster, the monster
456.  		 * should try to soften you up with missiles.  If you are
457.  		 * going away, you are probably hurt or running.  Give
458.  		 * chase, but if you are getting too far away, throw.
459.  		 */
460.  		x = mtmp->mx;
461.  		y = mtmp->my;
462.  		if(ispole || !URETREATING(x,y) ||
463.  		   !rn2(BOLT_LIM-distmin(x,y,mtmp->mux,mtmp->muy)))
464.  		{
465.  		    const char *verb = "throws";
466.  
467.  		    if (otmp->otyp == ARROW
468.  			|| otmp->otyp == ELVEN_ARROW
469.  			|| otmp->otyp == ORCISH_ARROW
470.  			|| otmp->otyp == YA
471.  			|| otmp->otyp == CROSSBOW_BOLT) verb = "shoots";
472.  			if (ispole) {
473.  				if (dist2(mtmp->mx, mtmp->my, mtmp->mux, mtmp->muy) <=
474.  						POLE_LIM && couldsee(mtmp->mx, mtmp->my))
475.  					verb = "thrusts";
476.  				else return; /* Out of range, or intervening wall */
477.  			}
478.  
479.  		    if (canseemon(mtmp)) {
480.  			pline("%s %s %s!", Monnam(mtmp), verb,
481.  			      obj_is_pname(otmp) ?
482.  			      the(singular(otmp, xname)) :
483.  			      an(singular(otmp, xname)));
484.  		    }
485.  
486.  			/* Use a pole */
487.  			if (ispole) {
488.  				int dam = dmgval(otmp, &youmonst);
489.  				int hitv = 3 - distmin(u.ux,u.uy, mtmp->mx,mtmp->my);
490.  
491.  				if (hitv < -4) hitv = -4;
492.  				if (bigmonst(youmonst.data)) hitv++;
493.  				hitv += 8 + otmp->spe;
494.  				if (dam < 1) dam = 1;
495.  				(void) thitu(hitv, dam, otmp, xname(otmp));
496.  
497.  				return;
498.  			}
499.  
500.  		    /* Multishot calculations */
501.  		    if (((ammo_and_launcher(otmp, MON_WEP(mtmp)) && skill != -P_SLING) ||
502.  				skill == P_DAGGER || skill == P_DART ||
503.  				skill == P_SHURIKEN) && !mtmp->mconf) {
504.  			/* Assumes lords are skilled, princes are expert */
505.  			if (is_lord(mtmp->data)) multishot++;
506.  			if (is_prince(mtmp->data)) multishot += 2;
507.  
508.  			switch (monsndx(mtmp->data)) {
509.  			case PM_RANGER:
510.  			    multishot++;
511.  			    break;
512.  			case PM_ROGUE:
513.  			    if (skill == P_DAGGER) multishot++;
514.  			    break;
515.  			case PM_SAMURAI:
516.  			    if (otmp->otyp == YA && MON_WEP(mtmp) &&
517.  			    		MON_WEP(mtmp)->otyp == YUMI) multishot++;
518.  			    break;
519.  			default:
520.  			    if (is_elf(mtmp->data) && otmp->otyp == ELVEN_ARROW &&
521.  					MON_WEP(mtmp) && MON_WEP(mtmp)->otyp == ELVEN_BOW)
522.  				multishot++;
523.  			    break;
524.  			}
525.  		    }
526.  		    if (otmp->quan < multishot) multishot = (int)otmp->quan;
527.  		    if (multishot < 1) multishot = 1;
528.  		    else multishot = rnd(multishot);
529.  		    while (multishot-- > 0)
530.  			m_throw(mtmp, mtmp->mx, mtmp->my, sgn(tbx), sgn(tby),
531.  					distmin(mtmp->mx,mtmp->my,mtmp->mux,mtmp->muy), otmp);
532.  		    nomul(0);
533.  		    return;
534.  		}
535.  	}
536.  }
537.  
538.  #endif /* OVL1 */
539.  #ifdef OVLB
540.  
541.  int
542.  spitmu(mtmp, mattk)		/* monster spits substance at you */
543.  register struct monst *mtmp;
544.  register struct attack *mattk;
545.  {
546.  	register struct obj *otmp;
547.  
548.  	if(mtmp->mcan) {
549.  
550.  	    if(flags.soundok)
551.  		pline("A dry rattle comes from %s throat.",
552.  		                      s_suffix(mon_nam(mtmp)));
553.  	    return 0;
554.  	}
555.  	if(lined_up(mtmp)) {
556.  		switch (mattk->adtyp) {
557.  		    case AD_BLND:
558.  		    case AD_DRST:
559.  			otmp = mksobj(BLINDING_VENOM, TRUE, FALSE);
560.  			break;
561.  		    default:
562.  			impossible("bad attack type in spitmu");
563.  				/* fall through */
564.  		    case AD_ACID:
565.  			otmp = mksobj(ACID_VENOM, TRUE, FALSE);
566.  			break;
567.  		}
568.  		if(!rn2(BOLT_LIM-distmin(mtmp->mx,mtmp->my,mtmp->mux,mtmp->muy))) {
569.  		    if (canseemon(mtmp))
570.  			pline("%s spits venom!", Monnam(mtmp));
571.  		    m_throw(mtmp, mtmp->mx, mtmp->my, sgn(tbx), sgn(tby),
572.  			distmin(mtmp->mx,mtmp->my,mtmp->mux,mtmp->muy), otmp);
573.  		    nomul(0);
574.  		    return 0;
575.  		}
576.  	}
577.  	return 0;
578.  }
579.  
580.  #endif /* OVLB */
581.  #ifdef OVL1
582.  
583.  int
584.  breamu(mtmp, mattk)			/* monster breathes at you (ranged) */
585.  	register struct monst *mtmp;
586.  	register struct attack  *mattk;
587.  {
588.  	/* if new breath types are added, change AD_ACID to max type */
589.  	int typ = (mattk->adtyp == AD_RBRE) ? rnd(AD_ACID) : mattk->adtyp ;
590.  
591.  	if(lined_up(mtmp)) {
592.  
593.  	    if(mtmp->mcan) {
594.  		if(flags.soundok) {
595.  		    if(canseemon(mtmp))
596.  			pline("%s coughs.", Monnam(mtmp));
597.  		    else
598.  			You_hear("a cough.");
599.  		}
600.  		return(0);
601.  	    }
602.  	    if(!mtmp->mspec_used && rn2(3)) {
603.  
604.  		if((typ >= AD_MAGM) && (typ <= AD_ACID)) {
605.  
606.  		    if(canseemon(mtmp))
607.  			pline("%s breathes %s!", Monnam(mtmp),
608.  			      breathwep[typ-1]);
609.  		    buzz((int) (-20 - (typ-1)), (int)mattk->damn,
610.  			 mtmp->mx, mtmp->my, sgn(tbx), sgn(tby));
611.  		    nomul(0);
612.  		    /* breath runs out sometimes. Also, give monster some
613.  		     * cunning; don't breath if the player fell asleep.
614.  		     */
615.  		    if(!rn2(3))
616.  			mtmp->mspec_used = 10+rn2(20);
617.  		    if(typ == AD_SLEE && !Sleep_resistance)
618.  			mtmp->mspec_used += rnd(20);
619.  		} else impossible("Breath weapon %d used", typ-1);
620.  	    }
621.  	}
622.  	return(1);
623.  }
624.  
625.  boolean
626.  linedup(ax, ay, bx, by)
627.  register xchar ax, ay, bx, by;
628.  {
629.  	tbx = ax - bx;	/* These two values are set for use */
630.  	tby = ay - by;	/* after successful return.	    */
631.  
632.  	/* sometimes displacement makes a monster think that you're at its
633.  	   own location; prevent it from throwing and zapping in that case */
634.  	if (!tbx && !tby) return FALSE;
635.  
636.  	if((!tbx || !tby || abs(tbx) == abs(tby)) /* straight line or diagonal */
637.  	   && distmin(tbx, tby, 0, 0) < BOLT_LIM) {
638.  	    if(ax == u.ux && ay == u.uy) return((boolean)(couldsee(bx,by)));
639.  	    else if(clear_path(ax,ay,bx,by)) return TRUE;
640.  	}
641.  	return FALSE;
642.  }
643.  
644.  boolean
645.  lined_up(mtmp)		/* is mtmp in position to use ranged attack? */
646.  	register struct monst *mtmp;
647.  {
648.  	return(linedup(mtmp->mux,mtmp->muy,mtmp->mx,mtmp->my));
649.  }
650.  
651.  #endif /* OVL1 */
652.  #ifdef OVL0
653.  
654.  /* Check if a monster is carrying a particular item.
655.   */
656.  struct obj *
657.  m_carrying(mtmp, type)
658.  struct monst *mtmp;
659.  int type;
660.  {
661.  	register struct obj *otmp;
662.  
663.  	for(otmp = mtmp->minvent; otmp; otmp = otmp->nobj)
664.  		if(otmp->otyp == type)
665.  			return(otmp);
666.  	return((struct obj *) 0);
667.  }
668.  
669.  #endif /* OVL0 */
670.  
671.  /*mthrowu.c*/

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