From 7261dbb462b6160197c43b4aebbbd5d3165f2a3d Mon Sep 17 00:00:00 2001
From: jmoenig <jens@moenig.org>
Date: Thu, 23 Jul 2020 00:27:32 +0200
Subject: [PATCH] fixed mouseDown events for touch devices

---
 HISTORY.md     |  3 +++
 snap.html      |  2 +-
 src/morphic.js | 12 +++++++-----
 3 files changed, 11 insertions(+), 6 deletions(-)

diff --git a/HISTORY.md b/HISTORY.md
index dc378611..c9f69afb 100755
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -2,6 +2,9 @@
 
 ## in development:
 
+### 2020-07-23
+* morphic: fixed mouseDown events for touch devices
+
 ### 2020-07-22
 * morphic, blocks, gui: tweaked block-fading mouse-over
 * blocks, threads: tweaked context visualizations to be alpha-independent
diff --git a/snap.html b/snap.html
index c9c5c913..98d98674 100755
--- a/snap.html
+++ b/snap.html
@@ -4,7 +4,7 @@
         <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
         <title>Snap! Build Your Own Blocks 6.0.1 - dev -</title>
         <link rel="icon" href="src/favicon.ico">
-        <script src="src/morphic.js?version=2020-07-22"></script>
+        <script src="src/morphic.js?version=2020-07-23"></script>
         <script src="src/symbols.js?version=2020-07-21"></script>
         <script src="src/widgets.js?version=2020-07-21"></script>
         <script src="src/blocks.js?version=2020-07-22"></script>
diff --git a/src/morphic.js b/src/morphic.js
index 7eb28ca8..f442cc1b 100644
--- a/src/morphic.js
+++ b/src/morphic.js
@@ -1280,7 +1280,7 @@
 
 /*global window, HTMLCanvasElement, FileReader, Audio, FileList, Map*/
 
-var morphicVersion = '2020-July-22';
+var morphicVersion = '2020-July-23';
 var modules = {}; // keep track of additional loaded modules
 var useBlurredShadows = true;
 
@@ -11284,10 +11284,12 @@ HandMorph.prototype.processMouseDown = function (event) {
         posInDocument = getDocumentPositionOf(this.world.worldCanvas);
 
     // update my position, in case I've just been initialized
-    this.setPosition(new Point(
-        event.pageX - posInDocument.x,
-        event.pageY - posInDocument.y
-    ));
+    if (event.pageX) {
+        this.setPosition(new Point(
+            event.pageX - posInDocument.x,
+            event.pageY - posInDocument.y
+        ));
+    }
 
     // process the actual event
     this.destroyTemporaries();