- place_monster_aux(0, py + 5, px, arena_info[p_ptr->arena_number].r_idx,
- (PM_NO_KAGE | PM_NO_PET));
+ if(!place_monster_aux(0, py + 5, px, arena_info[p_ptr->arena_number].r_idx, (PM_NO_KAGE | PM_NO_PET)))
+ {
+ p_ptr->exit_bldg = TRUE;
+ p_ptr->arena_number++;
+#ifdef JP
+ msg_print("Áê¼ê¤Ï·ç¾ì¤·¤¿¡£¤¢¤Ê¤¿¤ÎÉÔÀᄀ¤À¡£");
+#else
+ msg_print("The enemy is unable appear. You won by default.");
+#endif
+ }
+