+#include "yx_uint16.h" /* for yx_uint16 and dir enums */
+struct Win;
+
+
+
+struct Map
+{
+ struct yx_uint16 size; /* map's height/width in number of cells */
+ char * cells; /* sequence of bytes encoding map cells */
+};
+
+
+
+/* Initialize an island map as 64 x 64 cells of "~" cells representing water and
+ * "." cells representing land. The shape of the island is generated randomly by
+ * starting with a sea containing one land cell in the middle and then going
+ * into a cycle of repeatedly selecting a random cell on the map and
+ * transforming it into a land cell if it is horizontally or vertically neighbor
+ * to one; the cycle ends when a land cell is due to be created right at the
+ * border of the map.
+ */
+extern struct Map init_map();
+
+
+
+/* Try to change the view center of map into directino described by "d" (north
+ * = "N", east = "E" etc.).
+ */
+extern void map_scroll(char d);
+
+