silver vs poly'd hero (trunk only)

<Someone> reported that thitu() was adding d20 damage for silver object
hitting silver-hating hero even though all the callers were using dmgval()
which also does that, resulting in doubled silver bonus/penalty.  This
fixes that (including for boomerangs thrown by player, which weren't using
dmgval(), to handle a hyptothetical silver boomerang).  While testing it,
I noticed that there was no "the silver sears your flesh" message when a
monster hit you with a wielded silver weapon, so this fixes that too.
(How did we miss that?  And how did <Someone>? :-)

doc/fixes35.0

@@ -134,6 +134,8 @@ eating gold in front of the vault guard will make the guard angry
 calculate engulf time differently for non-digestion attacks than for digestion
 preform autopickup and/or report on objects at the spot when a failed #untrap
 	attempt causes the hero to move onto a trap's location
+thrown silver weapon hitting silver-hating poly'd hero got double silver damage
+wielded silver weapon hitting silver-hating poly'd hero lacked silver message
 
 
 Platform- and/or Interface-Specific Fixes

include/extern.h

@@ -2507,7 +2507,7 @@ E void FDECL(hit, (const char *,struct monst *,const char *));
 E void FDECL(miss, (const char *,struct monst *));
 E struct monst *FDECL(bhit, (int,int,int,int,int (*)(MONST_P,OBJ_P),
 			     int (*)(OBJ_P,OBJ_P),struct obj **));
-E struct monst *FDECL(boomhit, (int,int));
+E struct monst *FDECL(boomhit, (struct obj *,int,int));
 E int FDECL(burn_floor_paper, (int,int,BOOLEAN_P,BOOLEAN_P));
 E void FDECL(buzz, (int,int,XCHAR_P,XCHAR_P,int,int));
 E void FDECL(melt_ice, (XCHAR_P,XCHAR_P,const char *));

src/dothrow.c

@@ -1,4 +1,4 @@
-/*	SCCS Id: @(#)dothrow.c	3.5	2005/12/02	*/
+/*	SCCS Id: @(#)dothrow.c	3.5	2006/04/05	*/
 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
 /* NetHack may be freely redistributed.  See license for details. */
 
@@ -949,7 +949,7 @@ boolean twoweap; /* used to restore twoweapon mode if wielded weapon returns */
 	} else if(obj->otyp == BOOMERANG && !Underwater) {
 		if(Is_airlevel(&u.uz) || Levitation)
 		    hurtle(-u.dx, -u.dy, 1, TRUE);
-		mon = boomhit(u.dx, u.dy);
+		mon = boomhit(obj, u.dx, u.dy);
 		if(mon == &youmonst) {		/* the thing was caught */
 			exercise(A_DEX, TRUE);
 			obj = addinv(obj);

src/mhitu.c

@@ -940,6 +940,9 @@ hitmu(mtmp, mattk)
 				artifact_hit(mtmp, &youmonst, otmp, &dmg,dieroll)))
 			     hitmsg(mtmp, mattk);
 			if (!dmg) break;
+			if (objects[otmp->otyp].oc_material == SILVER &&
+				hates_silver(youmonst.data))
+			    pline_The("silver sears your flesh!");
 			if (u.mh > 1 && u.mh > ((u.uac>0) ? dmg : dmg+u.uac) &&
 				   objects[otmp->otyp].oc_material == IRON &&
 					(u.umonnum==PM_BLACK_PUDDING

src/mthrowu.c

@@ -65,7 +65,7 @@ const char *name;	/* if null, then format `obj' */
 
 		if (obj && objects[obj->otyp].oc_material == SILVER
 				&& hates_silver(youmonst.data)) {
-			dam += rnd(20);
+			/* extra damage already applied by dmgval() */
 			pline_The("silver sears your flesh!");
 			exercise(A_CON, FALSE);
 		}

src/zap.c

@@ -1,4 +1,4 @@
-/*	SCCS Id: @(#)zap.c	3.5	2006/01/30	*/
+/*	SCCS Id: @(#)zap.c	3.5	2006/04/05	*/
 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
 /* NetHack may be freely redistributed.  See license for details. */
 
@@ -3010,7 +3010,8 @@ struct obj **pobj;			/* object tossed/used, set to NULL
 }
 
 struct monst *
-boomhit(dx, dy)
+boomhit(obj, dx, dy)
+struct obj *obj;
 int dx, dy;
 {
 	register int i, ct;
@@ -3045,8 +3046,9 @@ int dx, dy;
 		if(bhitpos.x == u.ux && bhitpos.y == u.uy) { /* ct == 9 */
 			if(Fumbling || rn2(20) >= ACURR(A_DEX)) {
 				/* we hit ourselves */
-				(void) thitu(10, rnd(10), (struct obj *)0,
-					"boomerang");
+				(void) thitu(10 + obj->spe,
+					     dmgval(obj, &youmonst),
+					     obj, "boomerang");
 				break;
 			} else {	/* we catch it */
 				tmp_at(DISP_END, 0);