extern struct dchrstr bigcity_dchr;
#define IS_BIG_CITY(type) (dchr[(type)].d_pkg == UPKG)
+#define IS_BRIDGE_HEAD(type) \
+ ((type) == SCT_BHEAD || (type) == SCT_HIWAY || (type) == SCT_BTOWER)
+
/* Minimal efficiency of sectors that can be knocked down (bridges) */
#define SCT_MINEFF 20