From 1bcfd824f28cdc90d65bb91b1f89ede887874703 Mon Sep 17 00:00:00 2001
From: "erwin.coumans" <erwin.coumans@08e121b0-ae19-0410-a57b-3be3395fd4fd>
Date: Wed, 29 Feb 2012 03:56:53 +0000
Subject: [PATCH] object that have no contact response should not activate
 other objects See Issue 592

---
 .../CollisionDispatch/btSimulationIslandManager.cpp         | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/BulletCollision/CollisionDispatch/btSimulationIslandManager.cpp b/src/BulletCollision/CollisionDispatch/btSimulationIslandManager.cpp
index 8b114192b..cc0b2a6d5 100644
--- a/src/BulletCollision/CollisionDispatch/btSimulationIslandManager.cpp
+++ b/src/BulletCollision/CollisionDispatch/btSimulationIslandManager.cpp
@@ -330,11 +330,13 @@ void btSimulationIslandManager::buildIslands(btDispatcher* dispatcher,btCollisio
 			//kinematic objects don't merge islands, but wake up all connected objects
 			if (colObj0->isKinematicObject() && colObj0->getActivationState() != ISLAND_SLEEPING)
 			{
-				colObj1->activate();
+				if (colObj0->hasContactResponse())
+					colObj1->activate();
 			}
 			if (colObj1->isKinematicObject() && colObj1->getActivationState() != ISLAND_SLEEPING)
 			{
-				colObj0->activate();
+				if (colObj1->hasContactResponse())
+					colObj0->activate();
 			}
 			if(m_splitIslands)
 			{