cleaning up castorder, unifying access to target region and caster.

src/bindings/helpers.c

@@ -190,7 +190,8 @@ static int lua_callspell(castorder * co)
 {
   lua_State *L = (lua_State *) global.vm_state;
   const char *fname = co->sp->sname;
-  unit *mage = co->familiar ? co->familiar : co->magician.u;
+  unit *caster = co_get_caster(co);
+  region * r = co_get_region(co);
   int result = -1;
   const char *hashpos = strchr(fname, '#');
   char fbuf[64];
@@ -207,8 +208,8 @@ static int lua_callspell(castorder * co)
   lua_rawget(L, LUA_GLOBALSINDEX);
   if (lua_isfunction(L, 1)) {
     int nparam = 4;
-    tolua_pushusertype(L, co->rt, TOLUA_CAST "region");
-    tolua_pushusertype(L, mage, TOLUA_CAST "unit");
+    tolua_pushusertype(L, r, TOLUA_CAST "region");
+    tolua_pushusertype(L, caster, TOLUA_CAST "unit");
     tolua_pushnumber(L, (lua_Number) co->level);
     tolua_pushnumber(L, (lua_Number) co->force);
     if (co->sp->parameter && co->par->length) {
@@ -232,7 +233,7 @@ static int lua_callspell(castorder * co)
     if (lua_pcall(L, nparam, 1, 0) != 0) {
       const char *error = lua_tostring(L, -1);
       log_error(("spell(%s) calling '%s': %s.\n",
-          unitname(mage), fname, error));
+          unitname(caster), fname, error));
       lua_pop(L, 1);
     } else {
       result = (int)lua_tonumber(L, -1);
@@ -240,7 +241,7 @@ static int lua_callspell(castorder * co)
     }
   } else {
     log_error(("spell(%s) calling '%s': not a function.\n",
-        unitname(mage), fname));
+        unitname(caster), fname));
     lua_pop(L, 1);
   }
 

src/kernel/magic.c

@@ -1365,7 +1365,7 @@ static void patzer(castorder * co)
 static void do_fumble(castorder * co)
 {
   curse *c;
-  region *r = co->rt;
+  region *r = co_get_region(co);
   unit *u = co->magician.u;
   const spell *sp = co->sp;
   int level = co->level;
@@ -1664,7 +1664,7 @@ verify_targets(castorder * co, int *invalid, int *resist, int *success)
 {
   unit *mage = co->magician.u;
   const spell *sp = co->sp;
-  region *target_r = co->rt;
+  region *target_r = co_get_region(co);
   spellparameter *sa = co->par;
   int i;
 
@@ -2040,7 +2040,7 @@ static spellparameter *add_spellparameter(region * target_r, unit * u,
       pword = findparam(param[i++], u->faction->locale);
       switch (pword) {
       case P_REGION:
-        spobj = malloc(sizeof(spllprm));
+        spobj = (spllprm *)malloc(sizeof(spllprm));
         spobj->flag = 0;
         spobj->typ = SPP_REGION;
         spobj->data.r = u->region;
@@ -2095,20 +2095,26 @@ static spellparameter *add_spellparameter(region * target_r, unit * u,
   return par;
 }
 
-/* ------------------------------------------------------------- */
+struct unit * co_get_caster(struct castorder * co) {
+  return co->_familiar ? co->_familiar : co->magician.u;
+}
 
-castorder *new_castorder(void *u, unit * u2, const spell * sp, region * r,
+struct region * co_get_region(struct castorder * co) {
+  return co->_rtarget;
+}
+
+castorder *new_castorder(void *caster, unit * familiar, const spell * sp, region * r,
   int lev, double force, int range, struct order * ord, spellparameter * p)
 {
-  castorder *corder;
+  castorder *corder = (castorder*)calloc(1, sizeof(castorder));
+  unit * u = (unit *)caster;
 
-  corder = (castorder*)calloc(1, sizeof(castorder));
   corder->magician.u = u;
-  corder->familiar = u2;
+  corder->_familiar = familiar;
   corder->sp = sp;
   corder->level = lev;
   corder->force = force;
-  corder->rt = r;
+  corder->_rtarget = r ? r : (familiar ? familiar->region : (u ? u->region : 0));
   corder->distance = range;
   corder->order = copy_order(ord);
   corder->par = p;
@@ -2122,11 +2128,11 @@ castorder *create_castorder(castorder * co, unit *caster, unit * familiar, const
   if (!co) co = (castorder*)calloc(1, sizeof(castorder));
 
   co->magician.u = caster;
-  co->familiar = familiar;
+  co->_familiar = familiar;
   co->sp = sp;
   co->level = lev;
   co->force = force;
-  co->rt = r;
+  co->_rtarget = r ? r : (familiar ? familiar->region : (caster ? caster->region : 0));
   co->distance = range;
   co->order = copy_order(ord);
   co->par = p;
@@ -2834,7 +2840,7 @@ void magic(void)
       boolean fumbled = false;
       unit *u = co->magician.u;
       const spell *sp = co->sp;
-      region *target_r = co->rt;
+      region *target_r = co_get_region(co);
 
       /* reichen die Komponenten nicht, wird der Level reduziert. */
       co->level = eff_spelllevel(u, sp, cast_level, co->distance);

src/kernel/magic.h

@@ -130,17 +130,20 @@ typedef struct sc_mage {
       struct unit *u;
       struct fighter *fig;
     } magician;                 /* Magier (kann vom Typ struct unit oder fighter sein) */
-    struct unit *familiar;      /* Vertrauter, gesetzt, wenn der Spruch durch
+    struct unit *_familiar;     /* Vertrauter, gesetzt, wenn der Spruch durch
                                    den Vertrauten gezaubert wird */
     const struct spell *sp;     /* Spruch */
     int level;                  /* gewünschte Stufe oder Stufe des Magiers */
     double force;               /* Stärke des Zaubers */
-    struct region *rt;          /* Zielregion des Spruchs */
+    struct region *_rtarget;     /* Zielregion des Spruchs */
     int distance;               /* Entfernung zur Zielregion */
     struct order *order;        /* Befehl */
     struct spellparameter *par; /* für weitere Parameter */
   } castorder;
 
+  struct unit * co_get_caster(struct castorder * co);
+  struct region * co_get_region(struct castorder * co);
+
 /* irgendwelche zauber: */
   typedef void (*spell_f) (void *);
 /* normale zauber: */