Make it possible for other kinds of sprites to know and report their tile

coordinates.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@2004 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/miso/client/IsoSceneView.java

@@ -1,5 +1,5 @@
 //
-// $Id: IsoSceneView.java,v 1.125 2002/11/20 22:16:54 mdb Exp $
+// $Id: IsoSceneView.java,v 1.126 2002/11/28 03:42:17 mdb Exp $
 
 package com.threerings.miso.scene;
 
@@ -385,10 +385,10 @@ public class IsoSceneView implements SceneView
             // if this is a miso character sprite, we can use its cached
             // tile coordinates
             int tx, ty;
-            if (sprite instanceof MisoCharacterSprite) {
-                MisoCharacterSprite mcs = (MisoCharacterSprite)sprite;
-                tx = mcs.getTileX();
-                ty = mcs.getTileY();
+            if (sprite instanceof IsoSprite) {
+                IsoSprite iso = (IsoSprite)sprite;
+                tx = iso.getTileX();
+                ty = iso.getTileY();
 
             } else {
                 // otherwise we have to compute them from the screen

src/java/com/threerings/miso/client/IsoSprite.java

@@ -0,0 +1,21 @@
+//
+// $Id: IsoSprite.java,v 1.1 2002/11/28 03:42:17 mdb Exp $
+
+package com.threerings.miso.scene;
+
+/**
+ * An interface implementable by sprites that know their tile coordinates
+ * in the isometric view.
+ */
+public interface IsoSprite
+{
+    /**
+     * Returns the sprite's location on the x-axis in tile coordinates.
+     */
+    public int getTileX ();
+
+    /**
+     * Returns the sprite's location on the y-axis in tile coordinates.
+     */
+    public int getTileY ();
+}

src/java/com/threerings/miso/client/MisoCharacterSprite.java

@@ -1,5 +1,5 @@
 //
-// $Id: MisoCharacterSprite.java,v 1.5 2002/07/08 21:41:30 mdb Exp $
+// $Id: MisoCharacterSprite.java,v 1.6 2002/11/28 03:42:17 mdb Exp $
 
 package com.threerings.miso.scene;
 
@@ -17,7 +17,7 @@ import com.threerings.miso.tile.BaseTile;
  * will itself keep the sprite coordinates properly up to date.
  */
 public class MisoCharacterSprite extends CharacterSprite
-    implements Traverser
+    implements Traverser, IsoSprite
 {
     // documentation inherited
     public boolean canTraverse (BaseTile tile)
@@ -26,17 +26,13 @@ public class MisoCharacterSprite extends CharacterSprite
 	return tile.isPassable();
     }
 
-    /**
-     * Returns the sprite's location on the x-axis in tile coordinates.
-     */
+    // documentation inherited from interface
     public int getTileX ()
     {
         return _tilex;
     }
 
-    /**
-     * Returns the sprite's location on the y-axis in tile coordinates.
-     */
+    // documentation inherited from interface
     public int getTileY ()
     {
         return _tiley;