Removed the ShadowTile and replaced it with facilities in the BaseTile to

"cover" a tile with an object tile. While a tile is covered, it is
impassable. This allows us to have base tiles under object tile footprints
that are rendered, but not traversable by character sprites.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@944 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/miso/tile/BaseTile.java

@@ -1,5 +1,5 @@
 //
-// $Id: BaseTile.java,v 1.3 2001/11/27 22:17:42 mdb Exp $
+// $Id: BaseTile.java,v 1.4 2002/02/06 17:13:06 mdb Exp $
 
 package com.threerings.miso.tile;
 
@@ -37,7 +37,7 @@ public class BaseTile extends Tile
      */
     public boolean isPassable ()
     {
-        return _passable;
+        return _passable && !_covered;
     }
 
     /**
@@ -49,6 +49,19 @@ public class BaseTile extends Tile
         _passable = passable;
     }
 
+    /**
+     * Sets whether this tile is currently covered by the footprint of an
+     * object tile or not. When it is covered, it can't be walked on by
+     * character sprites.
+     */
+    public void setCovered (boolean covered)
+    {
+        _covered = covered;
+    }
+
     /** Whether the tile is passable. */
     protected boolean _passable = true;
+
+    /** Whether the tile is covered by an object tile. */
+    protected boolean _covered = true;
 }

src/java/com/threerings/miso/tile/ShadowTile.java

@@ -1,39 +0,0 @@
-//
-// $Id: ShadowTile.java,v 1.4 2001/11/27 22:17:42 mdb Exp $
-
-package com.threerings.miso.tile;
-
-import java.awt.Graphics2D;
-import java.awt.Shape;
-
-/**
- * The shadow tile extends base tile to provide an always-impassable tile
- * that has no display image.  Shadow tiles are intended for placement in
- * the footprint of {@link com.threerings.media.tile.ObjectTile} objects.
- */
-public class ShadowTile extends BaseTile
-{
-    /** The scene coordinates of the shadow tile's parent object tile. */
-    public int ox, oy;
-
-    /**
-     * Constructs a shadow tile.
-     */
-    public ShadowTile (int x, int y)
-    {
-        super(null);
-
-        // save the coordinates of our parent object tile
-        ox = x;
-        oy = y;
-
-        // shadow tiles are always impassable
-        _passable = false;
-    }
-
-    // documentation inherited
-    public void paint (Graphics2D gfx, Shape dest)
-    {
-        // paint nothing as we're naught but a measly shadow of a tile
-    }
-}