eliminate old_race. make the catdragon act like a dragon.

res/eressea/races.xml

@@ -717,7 +717,7 @@
     <attack type="4" damage="1d6"/>
     <attack type="1" damage="1d5"/>
   </race>
-  <race name="catdragon" magres="0.900000" maxaura="1.000000" regaura="1.000000" recruitcost="500000" weight="20000" capacity="10000" speed="1.000000" hp="20" damage="2d40" unarmedattack="0" unarmeddefense="0" defensemodifier="50" fly="yes" walk="yes" teach="no" shapeshift="yes" giveperson="yes" getitem="yes">
+  <race name="catdragon" magres="0.900000" maxaura="1.000000" regaura="1.000000" recruitcost="500000" weight="20000" capacity="10000" speed="1.000000" hp="20" damage="2d40" unarmedattack="0" unarmeddefense="0" defensemodifier="50" fly="yes" walk="yes" teach="no" shapeshift="yes" giveperson="yes" getitem="yes" dragon="yes">
     <ai splitsize="1"/>
     <attack type="4" damage="2d40"/>
     <attack type="4" damage="2d40"/>

src/battle.c

@@ -1037,17 +1037,18 @@ static int rc_specialdamage(const unit *au, const unit *du, const struct weapon_
 {
     const race *ar = u_race(au);
     int m, modifier = 0;
-
-    switch (old_race(ar)) {
-    case RC_HALFLING:
-        if (wtype != NULL && dragonrace(u_race(du))) {
+    if (wtype != NULL) {
+        if (fval(u_race(du), RCF_DRAGON)) {
+            static int cache;
+            static race *rc_halfling;
+            if (rc_changed(&cache)) {
+                rc_halfling = get_race(RC_HALFLING);
+            }
+            if (ar == rc_halfling) {
                 modifier += 5;
             }
-        break;
-    default:
-        break;
         }
-    if (wtype != NULL && wtype->modifiers != NULL) {
+        if (wtype->modifiers != NULL) {
             for (m = 0; wtype->modifiers[m].value; ++m) {
                 /* weapon damage for this weapon, possibly by race */
                 if (wtype->modifiers[m].flags & WMF_DAMAGE) {
@@ -1065,6 +1066,7 @@ static int rc_specialdamage(const unit *au, const unit *du, const struct weapon_
                 }
             }
         }
+    }
     return modifier;
 }
 

src/economy.c

@@ -114,6 +114,8 @@ static void recruit_init(void)
 
 int income(const unit * u)
 {
+    // TODO: make this a property, like race.income, no hard-coding of values
+    if (fval(u_race(u), RCF_DRAGON)) {
         switch (old_race(u_race(u))) {
         case RC_FIREDRAGON:
             return 150 * u->number;
@@ -122,9 +124,11 @@ int income(const unit * u)
         case RC_WYRM:
             return 5000 * u->number;
         default:
-        return 20 * u->number;
+            break;
         }
     }
+    return 20 * u->number;
+}
 
 static void scramble(void *data, unsigned int n, size_t width)
 {

src/guard.c

@@ -67,28 +67,34 @@ void update_guards(void)
 
 unsigned int guard_flags(const unit * u)
 {
+    // TODO: this should be a property of the race, like race.guard_flags
+    static int rc_cache;
+    static race *rc_elf, *rc_ent, *rc_ironkeeper;
+    const race *rc = u_race(u);
     unsigned int flags =
         GUARD_CREWS | GUARD_LANDING | GUARD_TRAVELTHRU | GUARD_TAX;
+    // TODO: configuration, not define
 #if GUARD_DISABLES_PRODUCTION == 1
     flags |= GUARD_PRODUCE;
 #endif
 #if GUARD_DISABLES_RECRUIT == 1
     flags |= GUARD_RECRUIT;
 #endif
-    switch (old_race(u_race(u))) {
-    case RC_ELF:
-        if (u->faction->race != u_race(u))
-            break;
-        /* else fallthrough */
-    case RC_TREEMAN:
+    if (rc_changed(&rc_cache)) {
+        rc_elf = get_race(RC_ELF);
+        rc_ent = get_race(RC_TREEMAN);
+        rc_ironkeeper = get_race(RC_IRONKEEPER);
+    }
+    if (rc == rc_elf) {
+        if (u->faction->race == u_race(u)) {
             flags |= GUARD_TREES;
-        break;
-    case RC_IRONKEEPER:
+        }
+    }
+    else if (rc == rc_ent) {
+        flags |= GUARD_TREES;
+    }
+    else if (rc == rc_ironkeeper) {
         flags = GUARD_MINING;
-        break;
-    default:
-        /* TODO: This should be configuration variables, all of it */
-        break;
     }
     return flags;
 }

src/kernel/race.h

@@ -244,7 +244,7 @@ extern "C" {
 #define omniscient(f) ((f)->race==get_race(RC_ILLUSION) || (f)->race==get_race(RC_TEMPLATE))
 
 #define playerrace(rc) (!fval((rc), RCF_NPC))
-#define dragonrace(rc) ((rc) == get_race(RC_FIREDRAGON) || (rc) == get_race(RC_DRAGON) || (rc) == get_race(RC_WYRM) || (rc) == get_race(RC_BIRTHDAYDRAGON))
+#define dragonrace(rc) (fval(rc, RCF_DRAGON))
 #define humanoidrace(rc) (fval((rc), RCF_UNDEAD) || (rc)==get_race(RC_DRACOID) || playerrace(rc))
 #define illusionaryrace(rc) (fval(rc, RCF_ILLUSIONARY))