X-Git-Url: https://plomlompom.com/repos/?a=blobdiff_plain;f=src%2Fmap.h;h=a1d607ac2d7f0a2cffc949f111be42d9079a8b43;hb=2dccba703435158681552b8a8aefccab79eb13f3;hp=c5ceb9429c98b4f8d60a98784204e7b44289f420;hpb=8e2ccd2e08bf2a08049c6c04ea24d79d161b4945;p=plomrogue

diff --git a/src/map.h b/src/map.h
index c5ceb94..a1d607a 100644
--- a/src/map.h
+++ b/src/map.h
@@ -1,17 +1,47 @@
+/* map.h
+ *
+ * Struct for the game map and routines to create and scroll on it.
+ */
+
 #ifndef MAP_H
 #define MAP_H
 
-#include "yx_uint16.h"
+#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);
+
+/* Center map on player. */
+extern void map_center();
 
-struct Player;
+/* Check if coordinate pos on (or beyond) map is accessible to map object
+ * movement.
+ */
+extern uint8_t is_passable(struct Map * map, struct yx_uint16 pos);
 
-struct Map {
-  struct yx_uint16 size;
-  struct yx_uint16 offset;
-  char * cells; };
 
-extern struct Map init_map ();
-extern void map_scroll (struct Map *, char, struct yx_uint16);
-extern void map_center_player (struct Map *, struct Player *, struct yx_uint16);
 
 #endif