Adding "unknown stair" marker for tiles.

git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@3420 c06c8d41-db1a-0410-9941-cceddc491573

4 files changed, 17 insertions, 0 deletions

diff --git a/crawl-ref/source/rltiles/dc-misc.txt b/crawl-ref/source/rltiles/dc-misc.txt
index e9bc3b1a14..91f6a68ca4 100644
--- a/crawl-ref/source/rltiles/dc-misc.txt
+++ b/crawl-ref/source/rltiles/dc-misc.txt
@@ -74,6 +74,7 @@ error ERROR
 travel_exclusion TRAVEL_EXCLUSION

 %rim 1

 todo TODO

+new_stair NEW_STAIR

 %rim 0

 

 char20 CHAR00

diff --git a/crawl-ref/source/rltiles/dc-misc/new_stair.bmp b/crawl-ref/source/rltiles/dc-misc/new_stair.bmp
new file mode 100644
index 0000000000..c877a7e62d
--- /dev/null
+++ b/crawl-ref/source/rltiles/dc-misc/new_stair.bmp
diff --git a/crawl-ref/source/tile1.cc b/crawl-ref/source/tile1.cc
index bfab0ddc9f..25c7352cc6 100644
--- a/crawl-ref/source/tile1.cc
+++ b/crawl-ref/source/tile1.cc
@@ -3605,6 +3605,13 @@ void tile_draw_floor()
                         object = (int)grid_secret_door_appearance(gc.x, gc.y);
 
                     tile_dngn[gc.x][gc.y] = tileidx_feature(object);
+
+                    if (is_travelable_stair((dungeon_feature_type)object) &&
+                        !travel_cache.know_stair(gc))
+                    {
+                        tile_dngn[gc.x][gc.y] |= TILE_FLAG_NEW_STAIR;
+                    }
+
                     gv_now[gc.x][gc.y] = object;
                 }
                 bg = tile_dngn[gc.x][gc.y];
diff --git a/crawl-ref/source/tile2.cc b/crawl-ref/source/tile2.cc
index 46977c7a68..2228dccd1e 100644
--- a/crawl-ref/source/tile2.cc
+++ b/crawl-ref/source/tile2.cc
@@ -773,6 +773,15 @@ void tcache_compose_normal(int ix, int *fg, int *bg)
         status_shift += 5;
     }
 
+    // Don't let the "new stair" icon cover up any existing icons, but
+    // draw it otherwise.
+    if (bg0 & TILE_FLAG_NEW_STAIR && status_shift == 0)
+    {
+        tcache_overlay(tc_img, ix, TILE_NEW_STAIR,
+            TREGION_0_NORMAL, &c, NULL);
+    }
+
+
     if (bg0 & TILE_FLAG_UNSEEN)
     {
         tcache_overlay(tc_img, ix, TILE_MESH, TREGION_0_NORMAL, &c, NULL);