Server/AI: Explore map for (long-time) unexplored cells.

[plomrogue] / src / server / field_of_view.h

diff --git a/src/server/field_of_view.h b/src/server/field_of_view.h
index ee337eb1d69636d4d95e764c685a94cc02d5e99b..54ffe289d676eba9360c79950d36f94889710dfa 100644 (file)
--- a/src/server/field_of_view.h
+++ b/src/server/field_of_view.h
@@ -1,45 +1,27 @@
 /* src/server/field_of_view.h
+ *
+ * This file is part of PlomRogue. PlomRogue is licensed under the GPL version 3
+ * or any later version. For details on its copyright, license, and warranties,
+ * see the file NOTICE in the root directory of the PlomRogue source package.
  *
  * Generate field of view maps.
  */
 
-
-
 #ifndef FIELD_OF_VIEW_H
 #define FIELD_OF_VIEW_H
 
-#include <stdint.h> /* uint8_t */
-struct MapObj;
-
+#include <stdint.h> /* uint8_t, uint32_t */
+struct Thing;
 
 
-/* States that cells in the fov map may be in. */
-enum fov_cell_states {
-    VISIBLE      = 0x01,
-    HIDDEN       = 0x02,
-    SHADOW_LEFT  = 0x04,
-    SHADOW_RIGHT = 0x08,
-    LIMIT        = 0x10,
-    HIDE_LATER   = 0x20
-};
 
-/* Return overlay of world map wherein all cell positions visible from player's
- * positions have flag VISIBLE set.
- *
- * This is achieved by spiraling out clock-wise from the player position,
- * flagging cells as VISIBLE unless they're already marked as HIDDEN, and, on
- * running into obstacles for view that are not HIDDEN, casting shadows from
- * these, i.e. drawing cells as HIDDEN that would be hidden by said obstacle,
- * before continuing the original spiraling path.
- *
- * Shadowcasting during spiraling is initially lazy, flagging only the shadows'
- * interior cells as HIDDEN and their border cells as HIDE_LATER. Only at the
- * end are all cells flagged HIDE_LATER flagged as HIDDEN. This is to handle
- * cases where obstacles to view sit right at the border of pre-estabilshed
- * shadows, therefore might be ignored if HIDDEN and not cast shadows on their
- * own that may slightly extend beyond the pre-established shadows they border.
+/* Update "t_eye"'s .mem_map memory with what's in its current FOV, and update
+ * and age the .mem_depth_map.
  */
-extern uint8_t * build_fov_map(struct MapObj * eye);
+extern void update_map_memory(struct Thing * t_eye);
+
+/* Build "t"'s field of view. */
+extern void build_fov_map(struct Thing * t);