more achievement tracking

The code that checked for and complained about having more than one
'prize' object on the mines' end or sokoban end level uses static
counters and would complain if you used #wizmakemap to recreate the
level.  (Or if a game got far enough that either of those levels was
created and then started over--I'm not sure what state support for
that has reached.)  So re-init those counters each time any special
level gets created; that's sufficient for what they track.

I also changed several variables in sp_lev.c from global to file
scope since they aren't used anywhere else.

src/sp_lev.c

@@ -1,4 +1,4 @@
-/* NetHack 3.6	sp_lev.c	$NHDT-Date: 1508827593 2017/10/24 06:46:33 $  $NHDT-Branch: NetHack-3.6.0 $:$NHDT-Revision: 1.89 $ */
+/* NetHack 3.6	sp_lev.c	$NHDT-Date: 1508879840 2017/10/24 21:17:20 $  $NHDT-Branch: NetHack-3.6.0 $:$NHDT-Revision: 1.90 $ */
 /*      Copyright (c) 1989 by Jean-Christophe Collet */
 /* NetHack may be freely redistributed.  See license for details. */
 
@@ -198,13 +198,14 @@ static NEARDATA char xsize, ysize;
 char *lev_message = 0;
 lev_region *lregions = 0;
 int num_lregions = 0;
-boolean splev_init_present = FALSE;
-boolean icedpools = FALSE;
 
-struct obj *container_obj[MAX_CONTAINMENT];
+static boolean splev_init_present = FALSE;
-int container_idx = 0;
+static boolean icedpools = FALSE;
+static int mines_prize_count = 0, soko_prize_count = 0; /* achievements */
 
-struct monst *invent_carrying_monster = NULL;
+static struct obj *container_obj[MAX_CONTAINMENT];
+static int container_idx = 0;
+static struct monst *invent_carrying_monster = NULL;
 
 #define SPLEV_STACK_RESERVE 128
 
@@ -1944,7 +1945,6 @@ struct mkroom *croom;
 
     if (o->id != -1) {
         static const char prize_warning[] = "multiple prizes on %s level";
-        static int mcount = 0, scount = 0;
 
         /* if this is a specific item of the right type and it is being
            created on the right level, flag it as the designated item
@@ -1954,17 +1954,17 @@ struct mkroom *croom;
         if (Is_mineend_level(&u.uz)) {
             if (otmp->otyp == iflags.mines_prize_type) {
                 otmp->record_achieve_special = MINES_PRIZE;
-                if (++mcount > 1)
+                if (++mines_prize_count > 1)
                     impossible(prize_warning, "mines end");
             }
         } else if (Is_sokoend_level(&u.uz)) {
             if (otmp->otyp == iflags.soko_prize_type1) {
                 otmp->record_achieve_special = SOKO_PRIZE1;
-                if (++scount > 1)
+                if (++soko_prize_count > 1)
                     impossible(prize_warning, "sokoban end");
             } else if (otmp->otyp == iflags.soko_prize_type2) {
                 otmp->record_achieve_special = SOKO_PRIZE2;
-                if (++scount > 1)
+                if (++soko_prize_count > 1)
                     impossible(prize_warning, "sokoban end");
             }
         }
@@ -5201,7 +5201,7 @@ sp_lev *lvl;
     long room_stack = 0;
     unsigned long max_execution = SPCODER_MAX_RUNTIME;
     struct sp_coder *coder =
-        (struct sp_coder *) alloc(sizeof(struct sp_coder));
+        (struct sp_coder *) alloc(sizeof (struct sp_coder));
 
     coder->frame = frame_new(0);
     coder->stack = NULL;
@@ -5215,9 +5215,14 @@ sp_lev *lvl;
 
     splev_init_present = FALSE;
     icedpools = FALSE;
+    /* achievement tracking; static init would suffice except we need to
+       reset if #wizmakemap is used to recreate mines' end or sokoban end;
+       once either level is created, these values can be forgotten */
+    mines_prize_count = soko_prize_count = 0;
 
     if (wizard) {
         char *met = nh_getenv("SPCODER_MAX_RUNTIME");
+
         if (met && met[0] == '1')
             max_execution = (1 << 30) - 1;
     }