1 files changed, 49 insertions, 0 deletions
diff --git a/NET/worlds/scape/DiffRoomSensor.java b/NET/worlds/scape/DiffRoomSensor.java
new file mode 100644
index 0000000..141b76e
--- /dev/null
+++ b/NET/worlds/scape/DiffRoomSensor.java
@@ -0,0 +1,49 @@
+package NET.worlds.scape;
+
+import java.io.IOException;
+
+public class DiffRoomSensor extends Sensor implements FrameHandler {
+   private Room lastCamRoom;
+   private static Object classCookie = new Object();
+
+   @Override
+   public void detach() {
+      this.lastCamRoom = null;
+      super.detach();
+   }
+
+   @Override
+   public boolean handle(FrameEvent e) {
+      Object owner = this.getOwner();
+      if (owner != null && owner instanceof WObject) {
+         WObject o = (WObject)owner;
+         Room thisRoom = o.getRoom();
+         Room thisCamRoom = Pilot.getActiveRoom();
+         if (thisCamRoom != thisRoom && this.lastCamRoom == thisRoom) {
+            this.trigger(e);
+         }
+
+         this.lastCamRoom = thisCamRoom;
+         return true;
+      } else {
+         return true;
+      }
+   }
+
+   @Override
+   public void saveState(Saver s) throws IOException {
+      s.saveVersion(0, classCookie);
+      super.saveState(s);
+   }
+
+   @Override
+   public void restoreState(Restorer r) throws IOException, TooNewException {
+      switch (r.restoreVersion(classCookie)) {
+         case 0:
+            super.restoreState(r);
+            return;
+         default:
+            throw new TooNewException();
+      }
+   }
+}