Added to classes actor, monsters and player the method can_pass_through(),

which returns true for a grid that the monster or player can pass trhough.
Also added new monster type "rock worm" to demonstrate a monster which
can pass through solid walls.


git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@2459 c06c8d41-db1a-0410-9941-cceddc491573

1 files changed, 16 insertions, 1 deletions

diff --git a/crawl-ref/source/player.cc b/crawl-ref/source/player.cc
index 02266afb2a..6d7e083a11 100644
--- a/crawl-ref/source/player.cc
+++ b/crawl-ref/source/player.cc
@@ -169,7 +169,7 @@ bool move_player_to_grid( int x, int y, bool stepped, bool allow_shift,
     const dungeon_feature_type new_grid = grd[x][y];
 
     // really must be clear
-    ASSERT( !grid_is_solid( new_grid ) );
+    ASSERT( you.can_pass_through( new_grid ) );
 
     // if (grid_is_solid( new_grid ))
     //     return (false);
@@ -5406,6 +5406,21 @@ bool player::floundering() const
     return in_water() && !can_swim();
 }
 
+bool player::can_pass_through(const dungeon_feature_type grid) const
+{
+    return !grid_is_solid(grid);
+}
+
+bool player::can_pass_through(const int _x, const int _y) const
+{
+    return can_pass_through(grd[_x][_y]);
+}
+
+bool player::can_pass_through(const coord_def &c) const
+{
+    return can_pass_through(grd(c));
+}
+
 size_type player::body_size(int psize, bool base) const
 {
     size_type ret = (base) ? SIZE_CHARACTER : transform_size( psize );