Add additional type of orientation to ArcPath - NONE - which keeps us from reorienting sprites following the path.

git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@3780 542714f4-19e9-0310-aa3c-eee0fc999fb1

src/java/com/threerings/media/util/ArcPath.java

@@ -45,6 +45,11 @@ public class ArcPath extends TimedPath
      * follow this path. */
     public static final int FINE = 1;
 
+    /** An orientation indicating that the pathable should not be oriented
+     * as it moves along the path.
+     */
+    public static final int NONE = 2;
+
     /**
      * Creates an arc path that will animate a pathable from the specified
      * starting position along an ellipse defined by the supplied
@@ -130,6 +135,8 @@ public class ArcPath extends TimedPath
         // determine where we should be along the path
         computePosition(_center, _xradius, _yradius, angle, _tpos);
 
+        // Skip this if we are not reorienting as we follow the path.
+        if (_orient != NONE) {
             // compute the pathable's new orientation
             double theta = angle + ((_delta > 0) ? Math.PI/2 : -Math.PI/2);
             int orient;
@@ -148,17 +155,18 @@ public class ArcPath extends TimedPath
                 break;
             }
 
-        // update the pathable's location if it moved
-        if (pable.getX() != _tpos.x || pable.getY() != _tpos.y) {
-            pable.setLocation(_tpos.x, _tpos.y);
-            modified = true;
-        }
-
             // update the pathable's orientation if it changed
             if (pable.getOrientation() != orient) {
                 pable.setOrientation(orient);
                 modified = true;
             }
+        }            
+         
+        // update the pathable's location if it moved
+        if (pable.getX() != _tpos.x || pable.getY() != _tpos.y) {
+            pable.setLocation(_tpos.x, _tpos.y);
+            modified = true;
+        }
                 
         // if we completed our path, let the sprite know
         if (angle == _sangle + _delta) {