Server: Add ENEMY_FOV option (default: off) to force FOV on enemies.

[plomrogue] / src / server / io.c

diff --git a/src/server/io.c b/src/server/io.c
index 81251c1e4ff34612d7e1f9ecf6a964d23f8373bf..7fbb511055b2e30842a24b713bcfb5502dbf42ae 100644 (file)
--- a/src/server/io.c
+++ b/src/server/io.c
@@ -5,10 +5,10 @@
 #include <errno.h> /* global errno */
 #include <limits.h> /* PIPE_BUF */
 #include <stddef.h> /* size_t, NULL */
-#include <stdint.h> /* uint8_t, uint32_t */
+#include <stdint.h> /* uint8_t, uint16_t, uint32_t */
 #include <stdio.h> /* defines EOF, FILE, sprintf() */
 #include <stdlib.h> /* free() */
-#include <string.h> /* strlen(), memcpy() */
+#include <string.h> /* strlen(), memcpy(), memset() */
 #include <sys/types.h> /* time_t */
 #include <time.h> /* time(), nanosleep() */
 #include "../common/readwrite.h" /* try_fopen(), try_fclose_unlink_rename(),
@@ -16,7 +16,8 @@
                                   */
 #include "../common/try_malloc.h" /* try_malloc() */
 #include "cleanup.h" /* set_cleanup_flag() */
-#include "field_of_view.h" /* build_visible_map() */
+#include "field_of_view.h" /* VISIBLE, build_fov_map() */
+#include "map.h" /* yx_to_map_pos() */
 #include "map_objects.h" /* structs MapObj, MapObjDef, get_map_obj_def() */
 #include "world.h" /* global world  */
 
@@ -45,10 +46,15 @@ static void write_value_as_line(uint32_t value, FILE * file);
 /* Write to "file" player's inventory, one item name per line. End in "%\n". */
 static void write_inventory(struct MapObj * player, FILE * file);
 
-/* Write to "file" game map as visible to the player, build_visible_map()-drawn.
+/* Return map cells sequence as visible to the "player", with invisible cells as
+ * whitespace. Super-impose over visible map cells map objects positioned there.
+ */
+static char * build_visible_map(struct MapObj * player);
+
+/* Write to "file" game map as visible to "player", build_visible_map()-drawn.
  * Write one row per \n-delimited line.
  */
-static void write_map(FILE * file);
+static void write_map(struct MapObj * player, FILE * file);
 
 
 
@@ -138,7 +144,7 @@ static void update_worldstate_file()
     write_value_as_line(player->pos.x, file);
     write_value_as_line(world.map.size.y, file);
     write_value_as_line(world.map.size.x, file);
-    write_map(file);
+    write_map(player, file);
     if (world.log)
     {
         try_fwrite(world.log, strlen(world.log), 1, file, f_name);
@@ -188,10 +194,49 @@ static void write_inventory(struct MapObj * player, FILE * file)
 
 
 
-static void write_map(FILE * file)
+static char * build_visible_map(struct MapObj * player)
+{
+    char * f_name = "build_visible_map()";
+    uint8_t * fov_map = build_fov_map(player);
+    uint32_t map_size = world.map.size.y * world.map.size.x;
+    char * visible_map = try_malloc(map_size, f_name);
+    memset(visible_map, ' ', map_size);
+    uint16_t pos_i;
+    for (pos_i = 0; pos_i < map_size; pos_i++)
+    {
+        if (fov_map[pos_i] & VISIBLE)
+        {
+            visible_map[pos_i] = world.map.cells[pos_i];
+        }
+    }
+    struct MapObj * o;
+    struct MapObjDef * d;
+    char c;
+    uint8_t i;
+    for (i = 0; i < 2; i++)
+    {
+        for (o = world.map_objs; o != 0; o = o->next)
+        {
+            if (   fov_map[yx_to_map_pos(&o->pos)] & VISIBLE
+                && (   (0 == i && 0 == o->lifepoints)
+                    || (1 == i && 0 < o->lifepoints)))
+            {
+                d = get_map_object_def(o->type);
+                c = d->char_on_map;
+                visible_map[yx_to_map_pos(&o->pos)] = c;
+            }
+        }
+    }
+    free(fov_map);
+    return visible_map;
+}
+
+
+
+static void write_map(struct MapObj * player, FILE * file)
 {
     char * f_name = "write_map()";
-    char * visible_map = build_visible_map();
+    char * visible_map = build_visible_map(player);
     uint16_t x, y;
     for (y = 0; y < world.map.size.y; y++)
     {