eliminate static curse variables (gbdream & more)

src/kernel/curse.h

@@ -304,7 +304,7 @@ extern "C" {
         const struct curse *c, int self);
     int curse_cansee(const struct curse *c, const struct faction *viewer, objtype_t typ, const void *obj, int self);
 #define is_cursed(a, id, id2) \
-  curse_active(get_curse(a, ct_find(oldcursename(id))))
+  (a && curse_active(get_curse(a, ct_find(oldcursename(id)))))
 #define get_curseeffect(a, id, id2) \
   curse_geteffect(get_curse(a, ct_find(oldcursename(id))))
 

src/kernel/region.c

@@ -146,24 +146,25 @@ int deathcount(const region * r)
 
 void deathcounts(region * r, int fallen)
 {
-    attrib *a;
-    static const curse_type *ctype = NULL;
+    attrib *a = NULL;
 
     if (fallen == 0)
         return;
-    if (!ctype)
-        ctype = ct_find("holyground");
+    if (r->attribs) {
+        const curse_type *ctype = ct_find("holyground");
         if (ctype && curse_active(get_curse(r->attribs, ctype)))
             return;
-
         a = a_find(r->attribs, &at_deathcount);
-    if (!a)
+    }
+    if (!a) {
         a = a_add(&r->attribs, a_new(&at_deathcount));
+    }
     a->data.i += fallen;
 
-    if (a->data.i <= 0)
+    if (a->data.i <= 0) {
         a_remove(&r->attribs, a);
     }
+}
 
 /* Moveblock wird zur Zeit nicht über Attribute, sondern ein Bitfeld
    r->moveblock gemacht. Sollte umgestellt werden, wenn kompliziertere

src/kernel/unit.c

@@ -863,16 +863,15 @@ bool can_survive(const unit * u, const region * r)
     if ((fval(r->terrain, WALK_INTO) && (u_race(u)->flags & RCF_WALK))
         || (fval(r->terrain, SWIM_INTO) && (u_race(u)->flags & RCF_SWIM))
         || (fval(r->terrain, FLY_INTO) && (u_race(u)->flags & RCF_FLY))) {
-        static const curse_type *ctype = NULL;
 
         if (has_horses(u) && !fval(r->terrain, WALK_INTO))
             return false;
 
-        if (!ctype)
-            ctype = ct_find("holyground");
+        if (r->attribs) {
+            const curse_type *ctype = ct_find("holyground");
             if (fval(u_race(u), RCF_UNDEAD) && curse_active(get_curse(r->attribs, ctype)))
                 return false;
-
+        }
         return true;
     }
     return false;
@@ -1217,13 +1216,11 @@ static int item_modification(const unit * u, skill_t sk, int val)
 static int att_modification(const unit * u, skill_t sk)
 {
     double result = 0;
-    static const curse_type *skillmod_ct, *gbdream_ct, *worse_ct;
+
+    if (u->attribs) {
         curse *c;
-
-    skillmod_ct = ct_find("skillmod");
-    gbdream_ct = ct_find("gbdream");
-    worse_ct = ct_find("worse");
-
+        const curse_type *skillmod_ct = ct_find("skillmod");
+        const curse_type *worse_ct = ct_find("worse");
         c = get_curse(u->attribs, worse_ct);
         if (c != NULL)
             result += curse_geteffect(c);
@@ -1238,11 +1235,13 @@ static int att_modification(const unit * u, skill_t sk)
                 a = a->next;
             }
         }
-
+    }
     /* TODO hier kann nicht mit get/iscursed gearbeitet werden, da nur der
      * jeweils erste vom Typ C_GBDREAM zurueckgegen wird, wir aber alle
      * durchsuchen und aufaddieren muessen */
-    if (gbdream_ct && u->region) {
+    if (u->region && u->region->attribs) {
+        const curse_type *gbdream_ct = ct_find("gbdream");
+        if (gbdream_ct) {
             int bonus = 0, malus = 0;
             attrib *a = a_find(u->region->attribs, &at_curse);
             while (a && a->type == &at_curse) {
@@ -1262,6 +1261,7 @@ static int att_modification(const unit * u, skill_t sk)
             }
             result = result + bonus + malus;
         }
+    }
 
     return (int)result;
 }

src/spells.c

@@ -2012,7 +2012,7 @@ static int sp_treewalkexit(castorder * co)
  */
 static int sp_holyground(castorder * co)
 {
-    static const curse_type *ctype = NULL;
+    const curse_type *ctype = NULL;
     region *r = co_get_region(co);
     unit *mage = co->magician.u;
     int cast_level = co->level;
@@ -2021,9 +2021,7 @@ static int sp_holyground(castorder * co)
     report_spell(mage, r, msg);
     msg_release(msg);
 
-    if (!ctype) {
     ctype = ct_find("holyground");
-    }
     create_curse(mage, &r->attribs, ctype, power * power, 1, zero_effect, 0);
 
     a_removeall(&r->attribs, &at_deathcount);
@@ -3206,15 +3204,14 @@ static int sp_magicboost(castorder * co)
     double power = co->force;
     double effect;
     trigger *tsummon;
-    static const curse_type *ct_auraboost;
-    static const curse_type *ct_magicboost;
+    const curse_type *ct_auraboost;
+    const curse_type *ct_magicboost;
 
-    if (!ct_auraboost) {
     ct_auraboost = ct_find("auraboost");
     ct_magicboost = ct_find("magicboost");
     assert(ct_auraboost != NULL);
     assert(ct_magicboost != NULL);
-    }
+
     /* fehler, wenn schon ein boost */
     if (is_cursed(mage->attribs, C_MBOOST, 0)) {
         report_failure(mage, co->order);

src/study.c

@@ -277,21 +277,20 @@ teach_unit(unit * teacher, unit * student, int nteaching, skill_t sk,
 
 int teach_cmd(unit * u, struct order *ord)
 {
-    static const curse_type *gbdream_ct = NULL;
     plane *pl;
     region *r = u->region;
     skill_t sk_academy = NOSKILL;
     int teaching, i, j, count, academy = 0;
 
-    if (gbdream_ct == 0)
-        gbdream_ct = ct_find("gbdream");
+    if (u->region->attribs) {
+        const curse_type *gbdream_ct = ct_find("gbdream");
         if (gbdream_ct) {
             if (get_curse(u->region->attribs, gbdream_ct)) {
                 ADDMSG(&u->faction->msgs, msg_feedback(u, ord, "gbdream_noteach", ""));
                 return 0;
             }
         }
-
+    }
     if ((u_race(u)->flags & RCF_NOTEACH) || fval(u, UFL_WERE)) {
         cmistake(u, ord, 274, MSG_EVENT);
         return 0;