dragons will now attack if player goes near its hoard

src/enemy.cc

@@ -3,6 +3,7 @@
 #include "constants.h"
 #include "player.h"
 #include "level.h"
+#include "enemies/dragon.h"
 
 enemy_base::enemy_base(RNG *rng, const feature enabled_features,
                        const enum race &nrace, const position &pos,
@@ -17,6 +18,10 @@ int enemy_base::get_room_num() const {
 long_result enemy_base::act(level *lvl, character *pc, bool hostile) {
         if (is_adjacent(pos, pc->get_pos()) && hostile)
                 return attack(pc);
+        else if (race == DRAGON &&
+                 is_adjacent(static_cast<dragon * >(this)->get_guards(),
+                             pc->get_pos()))
+                return attack(pc);
 
         if (enabled_features & FEATURE_ENEMIES_CHASE && hostile &&
             distance_sqr(pos, pc->get_pos()) <= DIST_THRESHOLD_SQR) {