Make return values use defines

src/mthrowu.c

@@ -704,13 +704,13 @@ struct monst *mtmp, *mtarg;
         mtmp->weapon_check = NEED_RANGED_WEAPON;
         /* mon_wield_item resets weapon_check as appropriate */
         if (mon_wield_item(mtmp) != 0)
-            return 0;
+            return MM_MISS;
     }
 
     /* Pick a weapon */
     otmp = select_rwep(mtmp);
     if (!otmp)
-        return 0;
+        return MM_MISS;
     ispole = is_pole(otmp);
 
     x = mtmp->mx;
@@ -725,17 +725,17 @@ struct monst *mtmp, *mtarg;
             if (ammo_and_launcher(otmp, mwep)
                 && dist2(mtmp->mx, mtmp->my, mtarg->mx, mtarg->my)
                    > PET_MISSILE_RANGE2)
-                return 0; /* Out of range */
+                return MM_MISS; /* Out of range */
             /* Set target monster */
             g.mtarget = mtarg;
             g.marcher = mtmp;
             monshoot(mtmp, otmp, mwep); /* multishot shooting or throwing */
             g.marcher = g.mtarget = (struct monst *) 0;
             nomul(0);
-            return 1;
+            return MM_HIT;
         }
     }
-    return 0;
+    return MM_MISS;
 }
 
 /* monster spits substance at monster */
@@ -750,7 +750,7 @@ struct attack *mattk;
         if (!Deaf)
             pline("A dry rattle comes from %s throat.",
                   s_suffix(mon_nam(mtmp)));
-        return 0;
+        return MM_MISS;
     }
     if (m_lined_up(mtarg, mtmp)) {
         switch (mattk->adtyp) {
@@ -784,10 +784,10 @@ struct attack *mattk;
                     dog->hungrytime -= 5;
             }
 
-            return 1;
+            return MM_HIT;
         }
     }
-    return 0;
+    return MM_MISS;
 }
 
 /* monster breathes at monster (ranged) */
@@ -807,7 +807,7 @@ struct attack  *mattk;
                 else
                     You_hear("a cough.");
             }
-            return 0;
+            return MM_MISS;
         }
         if (!mtmp->mspec_used && rn2(3)) {
             if ((typ >= AD_MAGM) && (typ <= AD_ACID)) {
@@ -836,9 +836,9 @@ struct attack  *mattk;
                 }
             } else impossible("Breath weapon %d used", typ-1);
         } else
-            return 0;
+            return MM_MISS;
     }
-    return 1;
+    return MM_HIT;
 }