From 7934f4cd0344176db50ed597302e82252ddd4300 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jens=20M=C3=B6nig?= <jens@moenig.org>
Date: Fri, 18 Dec 2015 18:24:25 +0100
Subject: [PATCH] =?UTF-8?q?Optimization:=20Don=E2=80=99t=20redraw=20unrota?=
 =?UTF-8?q?teable=20sprites=20on=20TURN?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 history.txt |  4 ++++
 objects.js  | 14 +++++++++-----
 2 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/history.txt b/history.txt
index 5c25f7c4..344795d5 100755
--- a/history.txt
+++ b/history.txt
@@ -2815,3 +2815,7 @@ end - bulk of 151215
 151218
 ------
 * new Arabic translation, yay!! Thanks Tarek Galal!!!
+
+151219
+------
+* Objects: Optimization: Don’t redraw unrotateable sprites on TURN
diff --git a/objects.js b/objects.js
index f6b97385..dd5fe86a 100644
--- a/objects.js
+++ b/objects.js
@@ -125,7 +125,7 @@ PrototypeHatBlockMorph*/
 
 // Global stuff ////////////////////////////////////////////////////////
 
-modules.objects = '2015-December-15';
+modules.objects = '2015-December-19';
 
 var SpriteMorph;
 var StageMorph;
@@ -3533,10 +3533,14 @@ SpriteMorph.prototype.setHeading = function (degrees) {
         turn = dir - this.heading;
 
     // apply to myself
-    this.changed();
-    SpriteMorph.uber.setHeading.call(this, dir);
-    this.silentGotoXY(x, y, true); // just me
-    this.positionTalkBubble();
+    if (this.rotationStyle) { // optimization, only redraw if rotatable
+        this.changed();
+        SpriteMorph.uber.setHeading.call(this, dir);
+        this.silentGotoXY(x, y, true); // just me
+        this.positionTalkBubble();
+    } else {
+        this.heading = parseFloat(degrees) % 360;
+    }
 
     // propagate to my parts
     this.parts.forEach(function (part) {