From ecf62977838522f6031245dc0467d828a6199aeb Mon Sep 17 00:00:00 2001
From: Phr00t <phr00t@gmail.com>
Date: Mon, 19 May 2014 13:46:35 -0400
Subject: [PATCH] stack to deque

---
 .../src/main/java/com/jme3/bullet/PhysicsSpace.java        | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/jme3-bullet/src/main/java/com/jme3/bullet/PhysicsSpace.java b/jme3-bullet/src/main/java/com/jme3/bullet/PhysicsSpace.java
index 1109a92c6..fb7fe1b31 100644
--- a/jme3-bullet/src/main/java/com/jme3/bullet/PhysicsSpace.java
+++ b/jme3-bullet/src/main/java/com/jme3/bullet/PhysicsSpace.java
@@ -46,14 +46,13 @@ import com.jme3.math.Transform;
 import com.jme3.math.Vector3f;
 import com.jme3.scene.Node;
 import com.jme3.scene.Spatial;
-import com.jme3.util.SafeArrayList;
+import java.util.ArrayDeque;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Iterator;
 import java.util.LinkedList;
 import java.util.List;
 import java.util.Map;
-import java.util.Stack;
 import java.util.concurrent.Callable;
 import java.util.concurrent.ConcurrentHashMap;
 import java.util.concurrent.ConcurrentLinkedQueue;
@@ -95,7 +94,7 @@ public class PhysicsSpace {
     private Map<Long, PhysicsJoint> physicsJoints = new ConcurrentHashMap<Long, PhysicsJoint>();
     private Map<Long, PhysicsVehicle> physicsVehicles = new ConcurrentHashMap<Long, PhysicsVehicle>();
     private ArrayList<PhysicsCollisionListener> collisionListeners = new ArrayList<PhysicsCollisionListener>();
-    private Stack<PhysicsCollisionEvent> collisionEvents = new Stack<PhysicsCollisionEvent>();
+    private ArrayDeque<PhysicsCollisionEvent> collisionEvents = new ArrayDeque<PhysicsCollisionEvent>();
     private Map<Integer, PhysicsCollisionGroupListener> collisionGroupListeners = new ConcurrentHashMap<Integer, PhysicsCollisionGroupListener>();
     private ConcurrentLinkedQueue<PhysicsTickListener> tickListeners = new ConcurrentLinkedQueue<PhysicsTickListener>();
     private PhysicsCollisionEventFactory eventFactory = new PhysicsCollisionEventFactory();
@@ -365,7 +364,7 @@ public class PhysicsSpace {
     public void distributeEvents() {
         //add collision callbacks
         int clistsize = collisionListeners.size();
-        while( collisionEvents.empty() == false ) {
+        while( collisionEvents.isEmpty() == false ) {
             PhysicsCollisionEvent physicsCollisionEvent = collisionEvents.pop();
             for(int i=0;i<clistsize;i++) {
                 collisionListeners.get(i).collision(physicsCollisionEvent);