From 512d9d7ccef97ee63f072fdd226e3868becd5f2d Mon Sep 17 00:00:00 2001
From: jmoenig <jens@moenig.org>
Date: Fri, 26 Apr 2013 10:39:20 +0200
Subject: Ensure unique World stamps

---
 history.txt | 4 ++++
 morphic.js  | 5 ++++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/history.txt b/history.txt
index 53d23e7..7c9c3c0 100755
--- a/history.txt
+++ b/history.txt
@@ -1670,3 +1670,7 @@ ______
 * Morphic: Introducing World.stamp as reference in multi-World setups
 * Widgets: restore multi-dialog restrictions for multi-world setups
 * Translation update for "hide primitives" feature
+
+130426
+------
+* Morphic: ensure unique World stamps
diff --git a/morphic.js b/morphic.js
index 76af43f..e2779e5 100644
--- a/morphic.js
+++ b/morphic.js
@@ -1035,7 +1035,7 @@
 /*global window, HTMLCanvasElement, getMinimumFontHeight, FileReader, Audio,
 FileList, getBlurredShadowSupport*/
 
-var morphicVersion = '2013-April-25';
+var morphicVersion = '2013-April-26';
 var modules = {}; // keep track of additional loaded modules
 var useBlurredShadows = getBlurredShadowSupport(); // check for Chrome-bug
 
@@ -9886,6 +9886,9 @@ WorldMorph.prototype.init = function (aCanvas, fillPage) {
 
     // additional properties:
     this.stamp = Date.now(); // reference in multi-world setups
+    while (this.stamp === Date.now()) {nop(); }
+    this.stamp = Date.now();
+
     this.useFillPage = fillPage;
     if (this.useFillPage === undefined) {
         this.useFillPage = true;
-- 
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