1 files changed, 41 insertions, 0 deletions
diff --git a/NET/worlds/scape/StartupSensor.java b/NET/worlds/scape/StartupSensor.java
new file mode 100644
index 0000000..08f8e87
--- /dev/null
+++ b/NET/worlds/scape/StartupSensor.java
@@ -0,0 +1,41 @@
+package NET.worlds.scape;
+
+import java.io.IOException;
+
+public class StartupSensor extends Sensor implements FrameHandler {
+   private boolean hasTriggered = false;
+   private static Object classCookie = new Object();
+
+   @Override
+   public void addAction(Action o) {
+      this.hasTriggered = false;
+      super.addAction(o);
+   }
+
+   @Override
+   public boolean handle(FrameEvent e) {
+      if (!this.hasTriggered) {
+         this.hasTriggered = true;
+         this.trigger(e);
+      }
+
+      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();
+      }
+   }
+}