From 158c40425e8b8ae50559b7d1aca88d34dc47054f Mon Sep 17 00:00:00 2001
From: Joshua Heiland <thezenman@gmail.com>
Date: Mon, 18 Apr 2016 12:56:50 -0700
Subject: [PATCH] Engine uses provided world; fixes issue #230

---
 src/core/Engine.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/core/Engine.js b/src/core/Engine.js
index b549f66..40df471 100644
--- a/src/core/Engine.js
+++ b/src/core/Engine.js
@@ -72,7 +72,7 @@ var Body = require('../body/Body');
             engine.render = engine.render.controller.create(engine.render);
         }
 
-        engine.world = World.create(engine.world);
+        engine.world = options.world || World.create(engine.world);
         engine.pairs = Pairs.create();
         engine.broadphase = engine.broadphase.controller.create(engine.broadphase);
         engine.metrics = engine.metrics || { extended: false };