Setup a Ticker to fill in for the parts of java's FrameParticipant we might want.

git-svn-id: svn+ssh://src.earth.threerings.net/nenya/trunk@975 ed5b42cb-e716-0410-a449-f6a68f950b19

src/as/com/threerings/miso/client/Tickable.as

@@ -0,0 +1,25 @@
+// Nenya library - tools for developing networked games
+// Copyright (C) 2002-2010 Three Rings Design, Inc., All Rights Reserved
+// http://www.threerings.net/code/nenya/
+//
+// This library is free software; you can redistribute it and/or modify it
+// under the terms of the GNU Lesser General Public License as published
+// by the Free Software Foundation; either version 2.1 of the License, or
+// (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+package com.threerings.miso.client {
+    
+public interface Tickable
+{
+    function tick (tickStamp :int) :void;
+}
+}

src/as/com/threerings/miso/client/Ticker.as

@@ -0,0 +1,71 @@
+// Nenya library - tools for developing networked games
+// Copyright (C) 2002-2010 Three Rings Design, Inc., All Rights Reserved
+// http://www.threerings.net/code/nenya/
+//
+// This library is free software; you can redistribute it and/or modify it
+// under the terms of the GNU Lesser General Public License as published
+// by the Free Software Foundation; either version 2.1 of the License, or
+// (at your option) any later version.
+//
+// This library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+
+package com.threerings.miso.client {
+    
+import flash.utils.getTimer;
+
+import flash.events.TimerEvent;
+import flash.utils.Timer;
+
+/**
+ * Registers objects that wish to be sent a tick() call once per frame.
+ */
+public class Ticker
+{
+    public function start () :void
+    {
+        _t.addEventListener(TimerEvent.TIMER, handleTimer);
+        _t.start();
+    }
+
+    public function stop () :void
+    {
+        _t.removeEventListener(TimerEvent.TIMER, handleTimer);
+        _t.stop();
+        
+    }
+
+    public function handleTimer (event :TimerEvent) :void
+    {
+        tick(getTimer());
+    }
+
+    protected function tick (tickStamp :int) :void
+    {
+        for each (var tickable :Tickable in _tickables) {
+            tickable.tick(tickStamp);
+        }
+    }
+
+    public function registerTickable (tickable :Tickable) :void
+    {
+        _tickables.push(tickable);
+    }
+
+    public function removeTickable (tickable :Tickable) :void
+    {
+        _tickables.remove(tickable);
+    }
+
+    protected var _tickables :Array = [];
+
+    /** A timer that will fire every "frame". */
+    protected var _t :Timer = new Timer(1);
+}
+}

src/as/com/threerings/miso/util/MisoContext.as

@@ -18,6 +18,7 @@
 
 package com.threerings.miso.util {
 
+import com.threerings.miso.client.Ticker;
 import com.threerings.miso.tile.MisoTileManager;
 
 /**
@@ -31,5 +32,10 @@ public interface MisoContext
      * for the lifetime of the application.
      */
     function getTileManager () :MisoTileManager;
+
+    /**
+     * Returns a reference to the ticker, which gives regular heartbeat "ticks" every frame.
+     */
+    function getTicker () :Ticker;
 }
 }