From b5dc3b231dc5d4da765c13585a5d77fa85397b51 Mon Sep 17 00:00:00 2001
From: liabru <liabru@brm.io>
Date: Thu, 30 Nov 2017 00:16:03 +0000
Subject: [PATCH] release 0.14.0

---
 CHANGELOG.md        |  22 +++
 bower.json          |   2 +-
 build/matter.js     | 329 ++++++++++++++++++++++++++------------------
 build/matter.min.js |  95 ++++++-------
 package.json        |   2 +-
 5 files changed, 266 insertions(+), 184 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 7eeb0a4..52dcb0a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,25 @@
+<a name="0.14.0"></a>
+# 0.14.0 (2017-11-30)
+
+* added .eslintignore ([2279e15](https://github.com/liabru/matter-js/commit/2279e15))
+* added examples build task ([6108a31](https://github.com/liabru/matter-js/commit/6108a31))
+* added missing docs for Matter.World aliases ([841bf97](https://github.com/liabru/matter-js/commit/841bf97))
+* added Query.collides, closes #478 ([6593a72](https://github.com/liabru/matter-js/commit/6593a72)), closes [#478](https://github.com/liabru/matter-js/issues/478)
+* change examples to render using a fixed resolution ([0895d81](https://github.com/liabru/matter-js/commit/0895d81))
+* Do not warn on missing render.element if the canvas is already parented (because it was passed in at ([a529ec9](https://github.com/liabru/matter-js/commit/a529ec9))
+* fix `point` argument of Body.scale, closes #428 ([894c1ef](https://github.com/liabru/matter-js/commit/894c1ef)), closes [#428](https://github.com/liabru/matter-js/issues/428)
+* fix Body.scale for compound bodies ([50a89d0](https://github.com/liabru/matter-js/commit/50a89d0))
+* fix centroid for static compound bodies, closes #483 ([ece66e6](https://github.com/liabru/matter-js/commit/ece66e6)), closes [#483](https://github.com/liabru/matter-js/issues/483)
+* fix Common.isElement, closes #501, closes #507, closes #459, closes #468, closes #517 ([18a0845](https://github.com/liabru/matter-js/commit/18a0845)), closes [#501](https://github.com/liabru/matter-js/issues/501) [#507](https://github.com/liabru/matter-js/issues/507) [#459](https://github.com/liabru/matter-js/issues/459) [#468](https://github.com/liabru/matter-js/issues/468) [#517](https://github.com/liabru/matter-js/issues/517)
+* fix inertia change in Body.setMass, closes #378 ([f7d1877](https://github.com/liabru/matter-js/commit/f7d1877)), closes [#378](https://github.com/liabru/matter-js/issues/378)
+* fix Vertices.chamfer radius argument, closes #467 ([3bceef4](https://github.com/liabru/matter-js/commit/3bceef4)), closes [#467](https://github.com/liabru/matter-js/issues/467)
+* improved docs for constraints on compound bodies, closes #442 ([3307760](https://github.com/liabru/matter-js/commit/3307760)), closes [#442](https://github.com/liabru/matter-js/issues/442)
+* moved all private functions to module namespaces ([64be5a5](https://github.com/liabru/matter-js/commit/64be5a5))
+* moved private Matter.Engine functions on to namespace, closes #523 ([9eae36f](https://github.com/liabru/matter-js/commit/9eae36f)), closes [#523](https://github.com/liabru/matter-js/issues/523)
+* remove spelling mistake ([e5c4b47](https://github.com/liabru/matter-js/commit/e5c4b47))
+
+
+
 <a name="0.13.0"></a>
 # 0.13.0 (2017-07-06)
 
diff --git a/bower.json b/bower.json
index f8f28c8..af70370 100644
--- a/bower.json
+++ b/bower.json
@@ -1,6 +1,6 @@
 {
   "name": "Matter",
-  "version": "0.13.0",
+  "version": "0.14.0",
   "homepage": "https://github.com/liabru/matter-js",
   "authors": [
     "Liam Brummitt <liam@brm.io> (http://brm.io/)"
diff --git a/build/matter.js b/build/matter.js
index 31f13cf..7d6a498 100644
--- a/build/matter.js
+++ b/build/matter.js
@@ -1,5 +1,5 @@
 /**
-* matter-js 0.13.0 by @liabru 2017-07-06
+* matter-js 0.14.0 by @liabru 2017-11-30
 * http://brm.io/matter-js/
 * License MIT
 */
@@ -306,19 +306,23 @@ var Axes = _dereq_('../geometry/Axes');
     };
 
     /**
-     * Sets the mass of the body. Inverse mass and density are automatically updated to reflect the change.
+     * Sets the mass of the body. Inverse mass, density and inertia are automatically updated to reflect the change.
      * @method setMass
      * @param {body} body
      * @param {number} mass
      */
     Body.setMass = function(body, mass) {
+        var moment = body.inertia / (body.mass / 6);
+        body.inertia = moment * (mass / 6);
+        body.inverseInertia = 1 / body.inertia;
+
         body.mass = mass;
         body.inverseMass = 1 / body.mass;
         body.density = body.mass / body.area;
     };
 
     /**
-     * Sets the density of the body. Mass is automatically updated to reflect the change.
+     * Sets the density of the body. Mass and inertia are automatically updated to reflect the change.
      * @method setDensity
      * @param {body} body
      * @param {number} density
@@ -426,7 +430,7 @@ var Axes = _dereq_('../geometry/Axes');
         }
 
         // sum the properties of all compound parts of the parent body
-        var total = _totalProperties(body);
+        var total = Body._totalProperties(body);
 
         body.area = total.area;
         body.parent = body;
@@ -552,29 +556,50 @@ var Axes = _dereq_('../geometry/Axes');
      * @param {vector} [point]
      */
     Body.scale = function(body, scaleX, scaleY, point) {
+        var totalArea = 0,
+            totalInertia = 0;
+
+        point = point || body.position;
+
         for (var i = 0; i < body.parts.length; i++) {
             var part = body.parts[i];
 
             // scale vertices
-            Vertices.scale(part.vertices, scaleX, scaleY, body.position);
+            Vertices.scale(part.vertices, scaleX, scaleY, point);
 
             // update properties
             part.axes = Axes.fromVertices(part.vertices);
+            part.area = Vertices.area(part.vertices);
+            Body.setMass(part, body.density * part.area);
 
-            if (!body.isStatic) {
-                part.area = Vertices.area(part.vertices);
-                Body.setMass(part, body.density * part.area);
+            // update inertia (requires vertices to be at origin)
+            Vertices.translate(part.vertices, { x: -part.position.x, y: -part.position.y });
+            Body.setInertia(part, Body._inertiaScale * Vertices.inertia(part.vertices, part.mass));
+            Vertices.translate(part.vertices, { x: part.position.x, y: part.position.y });
 
-                // update inertia (requires vertices to be at origin)
-                Vertices.translate(part.vertices, { x: -part.position.x, y: -part.position.y });
-                Body.setInertia(part, Vertices.inertia(part.vertices, part.mass));
-                Vertices.translate(part.vertices, { x: part.position.x, y: part.position.y });
+            if (i > 0) {
+                totalArea += part.area;
+                totalInertia += part.inertia;
             }
 
+            // scale position
+            part.position.x = point.x + (part.position.x - point.x) * scaleX;
+            part.position.y = point.y + (part.position.y - point.y) * scaleY;
+
             // update bounds
             Bounds.update(part.bounds, part.vertices, body.velocity);
         }
 
+        // handle parent body
+        if (body.parts.length > 1) {
+            body.area = totalArea;
+
+            if (!body.isStatic) {
+                Body.setMass(body, body.density * totalArea);
+                Body.setInertia(body, totalInertia);
+            }
+        }
+
         // handle circles
         if (body.circleRadius) { 
             if (scaleX === scaleY) {
@@ -584,13 +609,6 @@ var Axes = _dereq_('../geometry/Axes');
                 body.circleRadius = null;
             }
         }
-
-        if (!body.isStatic) {
-            var total = _totalProperties(body);
-            body.area = total.area;
-            Body.setMass(body, total.mass);
-            Body.setInertia(body, total.inertia);
-        }
     };
 
     /**
@@ -671,7 +689,7 @@ var Axes = _dereq_('../geometry/Axes');
      * @param {body} body
      * @return {}
      */
-    var _totalProperties = function(body) {
+    Body._totalProperties = function(body) {
         // from equations at:
         // https://ecourses.ou.edu/cgi-bin/ebook.cgi?doc=&topic=st&chap_sec=07.2&page=theory
         // http://output.to/sideway/default.asp?qno=121100087
@@ -685,16 +703,16 @@ var Axes = _dereq_('../geometry/Axes');
 
         // sum the properties of all compound parts of the parent body
         for (var i = body.parts.length === 1 ? 0 : 1; i < body.parts.length; i++) {
-            var part = body.parts[i];
-            properties.mass += part.mass;
+            var part = body.parts[i],
+                mass = part.mass !== Infinity ? part.mass : 1;
+
+            properties.mass += mass;
             properties.area += part.area;
             properties.inertia += part.inertia;
-            properties.centre = Vector.add(properties.centre, 
-                                           Vector.mult(part.position, part.mass !== Infinity ? part.mass : 1));
+            properties.centre = Vector.add(properties.centre, Vector.mult(part.position, mass));
         }
 
-        properties.centre = Vector.div(properties.centre, 
-                                       properties.mass !== Infinity ? properties.mass : body.parts.length);
+        properties.centre = Vector.div(properties.centre, properties.mass);
 
         return properties;
     };
@@ -1989,6 +2007,23 @@ var Common = _dereq_('../core/Common');
     // World is a Composite body
     // see src/module/Outro.js for these aliases:
     
+    /**
+     * An alias for Composite.add
+     * @method add
+     * @param {world} world
+     * @param {} object
+     * @return {composite} The original world with the objects added
+     */
+
+    /**
+     * An alias for Composite.remove
+     * @method remove
+     * @param {world} world
+     * @param {} object
+     * @param {boolean} [deep=false]
+     * @return {composite} The original world with the objects removed
+     */
+
     /**
      * An alias for Composite.clear
      * @method clear
@@ -1997,7 +2032,7 @@ var Common = _dereq_('../core/Common');
      */
 
     /**
-     * An alias for Composite.add
+     * An alias for Composite.addComposite
      * @method addComposite
      * @param {world} world
      * @param {composite} composite
@@ -2238,7 +2273,7 @@ var Common = _dereq_('../core/Common');
                 || body.bounds.max.y < world.bounds.min.y || body.bounds.min.y > world.bounds.max.y)
                 continue;
 
-            var newRegion = _getRegion(grid, body);
+            var newRegion = Grid._getRegion(grid, body);
 
             // if the body has changed grid region
             if (!body.region || newRegion.id !== body.region.id || forceUpdate) {
@@ -2247,13 +2282,13 @@ var Common = _dereq_('../core/Common');
                 if (!body.region || forceUpdate)
                     body.region = newRegion;
 
-                var union = _regionUnion(newRegion, body.region);
+                var union = Grid._regionUnion(newRegion, body.region);
 
                 // update grid buckets affected by region change
                 // iterate over the union of both regions
                 for (col = union.startCol; col <= union.endCol; col++) {
                     for (row = union.startRow; row <= union.endRow; row++) {
-                        bucketId = _getBucketId(col, row);
+                        bucketId = Grid._getBucketId(col, row);
                         bucket = buckets[bucketId];
 
                         var isInsideNewRegion = (col >= newRegion.startCol && col <= newRegion.endCol
@@ -2266,15 +2301,15 @@ var Common = _dereq_('../core/Common');
                         if (!isInsideNewRegion && isInsideOldRegion) {
                             if (isInsideOldRegion) {
                                 if (bucket)
-                                    _bucketRemoveBody(grid, bucket, body);
+                                    Grid._bucketRemoveBody(grid, bucket, body);
                             }
                         }
 
                         // add to new region buckets
                         if (body.region === newRegion || (isInsideNewRegion && !isInsideOldRegion) || forceUpdate) {
                             if (!bucket)
-                                bucket = _createBucket(buckets, bucketId);
-                            _bucketAddBody(grid, bucket, body);
+                                bucket = Grid._createBucket(buckets, bucketId);
+                            Grid._bucketAddBody(grid, bucket, body);
                         }
                     }
                 }
@@ -2289,7 +2324,7 @@ var Common = _dereq_('../core/Common');
 
         // update pairs list only if pairs changed (i.e. a body changed region)
         if (gridChanged)
-            grid.pairsList = _createActivePairsList(grid);
+            grid.pairsList = Grid._createActivePairsList(grid);
     };
 
     /**
@@ -2311,13 +2346,13 @@ var Common = _dereq_('../core/Common');
      * @param {} regionB
      * @return {} region
      */
-    var _regionUnion = function(regionA, regionB) {
+    Grid._regionUnion = function(regionA, regionB) {
         var startCol = Math.min(regionA.startCol, regionB.startCol),
             endCol = Math.max(regionA.endCol, regionB.endCol),
             startRow = Math.min(regionA.startRow, regionB.startRow),
             endRow = Math.max(regionA.endRow, regionB.endRow);
 
-        return _createRegion(startCol, endCol, startRow, endRow);
+        return Grid._createRegion(startCol, endCol, startRow, endRow);
     };
 
     /**
@@ -2328,14 +2363,14 @@ var Common = _dereq_('../core/Common');
      * @param {} body
      * @return {} region
      */
-    var _getRegion = function(grid, body) {
+    Grid._getRegion = function(grid, body) {
         var bounds = body.bounds,
             startCol = Math.floor(bounds.min.x / grid.bucketWidth),
             endCol = Math.floor(bounds.max.x / grid.bucketWidth),
             startRow = Math.floor(bounds.min.y / grid.bucketHeight),
             endRow = Math.floor(bounds.max.y / grid.bucketHeight);
 
-        return _createRegion(startCol, endCol, startRow, endRow);
+        return Grid._createRegion(startCol, endCol, startRow, endRow);
     };
 
     /**
@@ -2348,7 +2383,7 @@ var Common = _dereq_('../core/Common');
      * @param {} endRow
      * @return {} region
      */
-    var _createRegion = function(startCol, endCol, startRow, endRow) {
+    Grid._createRegion = function(startCol, endCol, startRow, endRow) {
         return { 
             id: startCol + ',' + endCol + ',' + startRow + ',' + endRow,
             startCol: startCol, 
@@ -2366,7 +2401,7 @@ var Common = _dereq_('../core/Common');
      * @param {} row
      * @return {string} bucket id
      */
-    var _getBucketId = function(column, row) {
+    Grid._getBucketId = function(column, row) {
         return 'C' + column + 'R' + row;
     };
 
@@ -2378,7 +2413,7 @@ var Common = _dereq_('../core/Common');
      * @param {} bucketId
      * @return {} bucket
      */
-    var _createBucket = function(buckets, bucketId) {
+    Grid._createBucket = function(buckets, bucketId) {
         var bucket = buckets[bucketId] = [];
         return bucket;
     };
@@ -2391,7 +2426,7 @@ var Common = _dereq_('../core/Common');
      * @param {} bucket
      * @param {} body
      */
-    var _bucketAddBody = function(grid, bucket, body) {
+    Grid._bucketAddBody = function(grid, bucket, body) {
         // add new pairs
         for (var i = 0; i < bucket.length; i++) {
             var bodyB = bucket[i];
@@ -2423,7 +2458,7 @@ var Common = _dereq_('../core/Common');
      * @param {} bucket
      * @param {} body
      */
-    var _bucketRemoveBody = function(grid, bucket, body) {
+    Grid._bucketRemoveBody = function(grid, bucket, body) {
         // remove from bucket
         bucket.splice(Common.indexOf(bucket, body), 1);
 
@@ -2447,7 +2482,7 @@ var Common = _dereq_('../core/Common');
      * @param {} grid
      * @return [] pairs
      */
-    var _createActivePairsList = function(grid) {
+    Grid._createActivePairsList = function(grid) {
         var pairKeys,
             pair,
             pairs = [];
@@ -2617,7 +2652,7 @@ var Common = _dereq_('../core/Common');
 
 (function() {
     
-    var _pairMaxIdleLife = 1000;
+    Pairs._pairMaxIdleLife = 1000;
 
     /**
      * Creates a new pairs structure.
@@ -2728,7 +2763,7 @@ var Common = _dereq_('../core/Common');
             }
 
             // if pair is inactive for too long, mark it to be removed
-            if (timestamp - pair.timeUpdated > _pairMaxIdleLife) {
+            if (timestamp - pair.timeUpdated > Pairs._pairMaxIdleLife) {
                 indexesToRemove.push(i);
             }
         }
@@ -2780,6 +2815,38 @@ var Vertices = _dereq_('../geometry/Vertices');
 
 (function() {
 
+    /**
+     * Returns a list of collisions between `body` and `bodies`.
+     * @method collides
+     * @param {body} body
+     * @param {body[]} bodies
+     * @return {object[]} Collisions
+     */
+    Query.collides = function(body, bodies) {
+        var collisions = [];
+
+        for (var i = 0; i < bodies.length; i++) {
+            var bodyA = bodies[i];
+            
+            if (Bounds.overlaps(bodyA.bounds, body.bounds)) {
+                for (var j = bodyA.parts.length === 1 ? 0 : 1; j < bodyA.parts.length; j++) {
+                    var part = bodyA.parts[j];
+
+                    if (Bounds.overlaps(part.bounds, body.bounds)) {
+                        var collision = SAT.collides(part, body);
+
+                        if (collision.collided) {
+                            collisions.push(collision);
+                            break;
+                        }
+                    }
+                }
+            }
+        }
+
+        return collisions;
+    };
+
     /**
      * Casts a ray segment against a set of bodies and returns all collisions, ray width is optional. Intersection points are not provided.
      * @method ray
@@ -2797,25 +2864,11 @@ var Vertices = _dereq_('../geometry/Vertices');
             rayX = (endPoint.x + startPoint.x) * 0.5,
             rayY = (endPoint.y + startPoint.y) * 0.5,
             ray = Bodies.rectangle(rayX, rayY, rayLength, rayWidth, { angle: rayAngle }),
-            collisions = [];
+            collisions = Query.collides(ray, bodies);
 
-        for (var i = 0; i < bodies.length; i++) {
-            var bodyA = bodies[i];
-            
-            if (Bounds.overlaps(bodyA.bounds, ray.bounds)) {
-                for (var j = bodyA.parts.length === 1 ? 0 : 1; j < bodyA.parts.length; j++) {
-                    var part = bodyA.parts[j];
-
-                    if (Bounds.overlaps(part.bounds, ray.bounds)) {
-                        var collision = SAT.collides(part, ray);
-                        if (collision.collided) {
-                            collision.body = collision.bodyA = collision.bodyB = bodyA;
-                            collisions.push(collision);
-                            break;
-                        }
-                    }
-                }
-            }
+        for (var i = 0; i < collisions.length; i += 1) {
+            var collision = collisions[i];
+            collision.body = collision.bodyB = collision.bodyA;            
         }
 
         return collisions;
@@ -3276,7 +3329,7 @@ var Vector = _dereq_('../geometry/Vector');
                 axisBodyB = axisBodyA === bodyA ? bodyB : bodyA,
                 axes = [axisBodyA.axes[previousCollision.axisNumber]];
 
-            minOverlap = _overlapAxes(axisBodyA.vertices, axisBodyB.vertices, axes);
+            minOverlap = SAT._overlapAxes(axisBodyA.vertices, axisBodyB.vertices, axes);
             collision.reused = true;
 
             if (minOverlap.overlap <= 0) {
@@ -3286,14 +3339,14 @@ var Vector = _dereq_('../geometry/Vector');
         } else {
             // if we can't reuse a result, perform a full SAT test
 
-            overlapAB = _overlapAxes(bodyA.vertices, bodyB.vertices, bodyA.axes);
+            overlapAB = SAT._overlapAxes(bodyA.vertices, bodyB.vertices, bodyA.axes);
 
             if (overlapAB.overlap <= 0) {
                 collision.collided = false;
                 return collision;
             }
 
-            overlapBA = _overlapAxes(bodyB.vertices, bodyA.vertices, bodyB.axes);
+            overlapBA = SAT._overlapAxes(bodyB.vertices, bodyA.vertices, bodyB.axes);
 
             if (overlapBA.overlap <= 0) {
                 collision.collided = false;
@@ -3342,7 +3395,7 @@ var Vector = _dereq_('../geometry/Vector');
         collision.penetration.y = collision.normal.y * collision.depth; 
 
         // find support points, there is always either exactly one or two
-        var verticesB = _findSupports(bodyA, bodyB, collision.normal),
+        var verticesB = SAT._findSupports(bodyA, bodyB, collision.normal),
             supports = [];
 
         // find the supports from bodyB that are inside bodyA
@@ -3354,7 +3407,7 @@ var Vector = _dereq_('../geometry/Vector');
 
         // find the supports from bodyA that are inside bodyB
         if (supports.length < 2) {
-            var verticesA = _findSupports(bodyB, bodyA, Vector.neg(collision.normal));
+            var verticesA = SAT._findSupports(bodyB, bodyA, Vector.neg(collision.normal));
                 
             if (Vertices.contains(bodyB.vertices, verticesA[0]))
                 supports.push(verticesA[0]);
@@ -3381,7 +3434,7 @@ var Vector = _dereq_('../geometry/Vector');
      * @param {} axes
      * @return result
      */
-    var _overlapAxes = function(verticesA, verticesB, axes) {
+    SAT._overlapAxes = function(verticesA, verticesB, axes) {
         var projectionA = Vector._temp[0], 
             projectionB = Vector._temp[1],
             result = { overlap: Number.MAX_VALUE },
@@ -3391,8 +3444,8 @@ var Vector = _dereq_('../geometry/Vector');
         for (var i = 0; i < axes.length; i++) {
             axis = axes[i];
 
-            _projectToAxis(projectionA, verticesA, axis);
-            _projectToAxis(projectionB, verticesB, axis);
+            SAT._projectToAxis(projectionA, verticesA, axis);
+            SAT._projectToAxis(projectionB, verticesB, axis);
 
             overlap = Math.min(projectionA.max - projectionB.min, projectionB.max - projectionA.min);
 
@@ -3419,7 +3472,7 @@ var Vector = _dereq_('../geometry/Vector');
      * @param {} vertices
      * @param {} axis
      */
-    var _projectToAxis = function(projection, vertices, axis) {
+    SAT._projectToAxis = function(projection, vertices, axis) {
         var min = Vector.dot(vertices[0], axis),
             max = min;
 
@@ -3446,7 +3499,7 @@ var Vector = _dereq_('../geometry/Vector');
      * @param {} normal
      * @return [vector]
      */
-    var _findSupports = function(bodyA, bodyB, normal) {
+    SAT._findSupports = function(bodyA, bodyB, normal) {
         var nearestDistance = Number.MAX_VALUE,
             vertexToBody = Vector._temp[0],
             vertices = bodyB.vertices,
@@ -3524,6 +3577,7 @@ var Common = _dereq_('../core/Common');
      * All properties have default values, and many are pre-calculated automatically based on other properties.
      * To simulate a revolute constraint (or pin joint) set `length: 0` and a high `stiffness` value (e.g. `0.7` or above).
      * If the constraint is unstable, try lowering the `stiffness` value and / or increasing `engine.constraintIterations`.
+     * For compound bodies, constraints must be applied to the parent body (not one of its parts).
      * See the properties section below for detailed information on what you can pass via the `options` object.
      * @method create
      * @param {} options
@@ -4025,7 +4079,7 @@ var Bounds = _dereq_('../geometry/Bounds');
         Events.on(engine, 'beforeUpdate', function() {
             var allBodies = Composite.allBodies(engine.world);
             MouseConstraint.update(mouseConstraint, allBodies);
-            _triggerEvents(mouseConstraint);
+            MouseConstraint._triggerEvents(mouseConstraint);
         });
 
         return mouseConstraint;
@@ -4084,7 +4138,7 @@ var Bounds = _dereq_('../geometry/Bounds');
      * @private
      * @param {mouse} mouseConstraint
      */
-    var _triggerEvents = function(mouseConstraint) {
+    MouseConstraint._triggerEvents = function(mouseConstraint) {
         var mouse = mouseConstraint.mouse,
             mouseEvents = mouse.sourceEvents;
 
@@ -4388,7 +4442,11 @@ module.exports = Common;
      * @return {boolean} True if the object is a HTMLElement, otherwise false
      */
     Common.isElement = function(obj) {
-        return obj instanceof HTMLElement;
+        if (typeof HTMLElement !== 'undefined') {
+            return obj instanceof HTMLElement;
+        }
+
+        return !!(obj.nodeType && obj.nodeName);
     };
 
     /**
@@ -4631,14 +4689,14 @@ module.exports = Common;
 
         for (var node in graph) {
             if (!visited[node] && !temp[node]) {
-                _topologicalSort(node, visited, temp, graph, result);
+                Common._topologicalSort(node, visited, temp, graph, result);
             }
         }
 
         return result;
     };
 
-    var _topologicalSort = function(node, visited, temp, graph, result) {
+    Common._topologicalSort = function(node, visited, temp, graph, result) {
         var neighbors = graph[node] || [];
         temp[node] = true;
 
@@ -4651,7 +4709,7 @@ module.exports = Common;
             }
 
             if (!visited[neighbor]) {
-                _topologicalSort(neighbor, visited, temp, graph, result);
+                Common._topologicalSort(neighbor, visited, temp, graph, result);
             }
         }
 
@@ -4885,10 +4943,10 @@ var Body = _dereq_('../body/Body');
             Sleeping.update(allBodies, timing.timeScale);
 
         // applies gravity to all bodies
-        _bodiesApplyGravity(allBodies, world.gravity);
+        Engine._bodiesApplyGravity(allBodies, world.gravity);
 
         // update all body position and rotation by integration
-        _bodiesUpdate(allBodies, delta, timing.timeScale, correction, world.bounds);
+        Engine._bodiesUpdate(allBodies, delta, timing.timeScale, correction, world.bounds);
 
         // update all constraints (first pass)
         Constraint.preSolveAll(allBodies);
@@ -4962,7 +5020,7 @@ var Body = _dereq_('../body/Body');
 
 
         // clear force buffers
-        _bodiesClearForces(allBodies);
+        Engine._bodiesClearForces(allBodies);
 
         Events.trigger(engine, 'afterUpdate', event);
 
@@ -5013,11 +5071,11 @@ var Body = _dereq_('../body/Body');
 
     /**
      * Zeroes the `body.force` and `body.torque` force buffers.
-     * @method bodiesClearForces
+     * @method _bodiesClearForces
      * @private
      * @param {body[]} bodies
      */
-    var _bodiesClearForces = function(bodies) {
+    Engine._bodiesClearForces = function(bodies) {
         for (var i = 0; i < bodies.length; i++) {
             var body = bodies[i];
 
@@ -5030,12 +5088,12 @@ var Body = _dereq_('../body/Body');
 
     /**
      * Applys a mass dependant force to all given bodies.
-     * @method bodiesApplyGravity
+     * @method _bodiesApplyGravity
      * @private
      * @param {body[]} bodies
      * @param {vector} gravity
      */
-    var _bodiesApplyGravity = function(bodies, gravity) {
+    Engine._bodiesApplyGravity = function(bodies, gravity) {
         var gravityScale = typeof gravity.scale !== 'undefined' ? gravity.scale : 0.001;
 
         if ((gravity.x === 0 && gravity.y === 0) || gravityScale === 0) {
@@ -5056,7 +5114,7 @@ var Body = _dereq_('../body/Body');
 
     /**
      * Applys `Body.update` to all given `bodies`.
-     * @method updateAll
+     * @method _bodiesUpdate
      * @private
      * @param {body[]} bodies
      * @param {number} deltaTime 
@@ -5066,7 +5124,7 @@ var Body = _dereq_('../body/Body');
      * The Verlet correction factor (deltaTime / lastDeltaTime)
      * @param {bounds} worldBounds
      */
-    var _bodiesUpdate = function(bodies, deltaTime, timeScale, correction, worldBounds) {
+    Engine._bodiesUpdate = function(bodies, deltaTime, timeScale, correction, worldBounds) {
         for (var i = 0; i < bodies.length; i++) {
             var body = bodies[i];
 
@@ -5386,7 +5444,7 @@ var Common = _dereq_('./Common');
      * @readOnly
      * @type {String}
      */
-    Matter.version = '0.13.0';
+    Matter.version = '0.14.0';
 
     /**
      * A list of plugin dependencies to be installed. These are normally set and installed through `Matter.use`.
@@ -5493,7 +5551,7 @@ var Common = _dereq_('../core/Common');
         };
         
         mouse.mousemove = function(event) { 
-            var position = _getRelativeMousePosition(event, mouse.element, mouse.pixelRatio),
+            var position = Mouse._getRelativeMousePosition(event, mouse.element, mouse.pixelRatio),
                 touches = event.changedTouches;
 
             if (touches) {
@@ -5509,7 +5567,7 @@ var Common = _dereq_('../core/Common');
         };
         
         mouse.mousedown = function(event) {
-            var position = _getRelativeMousePosition(event, mouse.element, mouse.pixelRatio),
+            var position = Mouse._getRelativeMousePosition(event, mouse.element, mouse.pixelRatio),
                 touches = event.changedTouches;
 
             if (touches) {
@@ -5529,7 +5587,7 @@ var Common = _dereq_('../core/Common');
         };
         
         mouse.mouseup = function(event) {
-            var position = _getRelativeMousePosition(event, mouse.element, mouse.pixelRatio),
+            var position = Mouse._getRelativeMousePosition(event, mouse.element, mouse.pixelRatio),
                 touches = event.changedTouches;
 
             if (touches) {
@@ -5625,7 +5683,7 @@ var Common = _dereq_('../core/Common');
      * @param {number} pixelRatio
      * @return {}
      */
-    var _getRelativeMousePosition = function(event, element, pixelRatio) {
+    Mouse._getRelativeMousePosition = function(event, element, pixelRatio) {
         var elementBounds = element.getBoundingClientRect(),
             rootNode = (document.documentElement || document.body.parentNode || document.body),
             scrollX = (window.pageXOffset !== undefined) ? window.pageXOffset : rootNode.scrollLeft,
@@ -7410,7 +7468,7 @@ var Bounds = _dereq_('../geometry/Bounds');
         };
 
         // ensure path is absolute
-        _svgPathToAbsolute(path);
+        Svg._svgPathToAbsolute(path);
 
         // get total length
         total = path.getTotalLength();
@@ -7462,7 +7520,7 @@ var Bounds = _dereq_('../geometry/Bounds');
         return points;
     };
 
-    var _svgPathToAbsolute = function(path) {
+    Svg._svgPathToAbsolute = function(path) {
         // http://phrogz.net/convert-svg-path-to-all-absolute-commands
         // Copyright (c) Gavin Kistner
         // http://phrogz.net/js/_ReuseLicense.txt
@@ -8042,10 +8100,11 @@ var Common = _dereq_('../core/Common');
      * @param {number} qualityMax
      */
     Vertices.chamfer = function(vertices, radius, quality, qualityMin, qualityMax) {
-        radius = radius || [8];
-
-        if (!radius.length)
+        if (typeof radius === 'number') {
             radius = [radius];
+        } else {
+            radius = radius || [8];
+        }
 
         // quality defaults to -1, which is auto
         quality = (typeof quality !== 'undefined') ? quality : -1;
@@ -8291,16 +8350,16 @@ var Vector = _dereq_('../geometry/Vector');
 var Mouse = _dereq_('../core/Mouse');
 
 (function() {
-    
+
     var _requestAnimationFrame,
         _cancelAnimationFrame;
 
     if (typeof window !== 'undefined') {
         _requestAnimationFrame = window.requestAnimationFrame || window.webkitRequestAnimationFrame
-                                      || window.mozRequestAnimationFrame || window.msRequestAnimationFrame 
+                                      || window.mozRequestAnimationFrame || window.msRequestAnimationFrame
                                       || function(callback){ window.setTimeout(function() { callback(Common.now()); }, 1000 / 60); };
-   
-        _cancelAnimationFrame = window.cancelAnimationFrame || window.mozCancelAnimationFrame 
+
+        _cancelAnimationFrame = window.cancelAnimationFrame || window.mozCancelAnimationFrame
                                       || window.webkitCancelAnimationFrame || window.msCancelAnimationFrame;
     }
 
@@ -8361,12 +8420,12 @@ var Mouse = _dereq_('../core/Mouse');
         render.context = render.canvas.getContext('2d');
         render.textures = {};
 
-        render.bounds = render.bounds || { 
-            min: { 
+        render.bounds = render.bounds || {
+            min: {
                 x: 0,
                 y: 0
-            }, 
-            max: { 
+            },
+            max: {
                 x: render.canvas.width,
                 y: render.canvas.height
             }
@@ -8378,7 +8437,7 @@ var Mouse = _dereq_('../core/Mouse');
 
         if (Common.isElement(render.element)) {
             render.element.appendChild(render.canvas);
-        } else {
+        } else if (!render.canvas.parentNode) {
             Common.log('Render.create: options.element was undefined, render.canvas was created but not appended', 'warn');
         }
 
@@ -8460,19 +8519,19 @@ var Mouse = _dereq_('../core/Mouse');
         for (var i = 0; i < objects.length; i += 1) {
             var object = objects[i],
                 min = object.bounds ? object.bounds.min : (object.min || object.position || object),
-                max = object.bounds ? object.bounds.max : (object.max || object.position || object); 
+                max = object.bounds ? object.bounds.max : (object.max || object.position || object);
 
-            if (min && max) { 
-                if (min.x < bounds.min.x) 
+            if (min && max) {
+                if (min.x < bounds.min.x)
                     bounds.min.x = min.x;
-                    
-                if (max.x > bounds.max.x) 
+
+                if (max.x > bounds.max.x)
                     bounds.max.x = max.x;
 
-                if (min.y < bounds.min.y) 
+                if (min.y < bounds.min.y)
                     bounds.min.y = min.y;
 
-                if (max.y > bounds.max.y) 
+                if (max.y > bounds.max.y)
                     bounds.max.y = max.y;
             }
         }
@@ -8647,7 +8706,7 @@ var Mouse = _dereq_('../core/Mouse');
 
         if (options.showAxes || options.showAngleIndicator)
             Render.bodyAxes(render, bodies, context);
-        
+
         if (options.showPositions)
             Render.bodyPositions(render, bodies, context);
 
@@ -8806,7 +8865,7 @@ var Mouse = _dereq_('../core/Mouse');
             }
         }
     };
-    
+
     /**
      * Description
      * @private
@@ -8898,20 +8957,20 @@ var Mouse = _dereq_('../core/Mouse');
                     var sprite = part.render.sprite,
                         texture = _getTexture(render, sprite.texture);
 
-                    c.translate(part.position.x, part.position.y); 
+                    c.translate(part.position.x, part.position.y);
                     c.rotate(part.angle);
 
                     c.drawImage(
                         texture,
-                        texture.width * -sprite.xOffset * sprite.xScale, 
-                        texture.height * -sprite.yOffset * sprite.yScale, 
-                        texture.width * sprite.xScale, 
+                        texture.width * -sprite.xOffset * sprite.xScale,
+                        texture.height * -sprite.yOffset * sprite.yScale,
+                        texture.width * sprite.xScale,
                         texture.height * sprite.yScale
                     );
 
                     // revert translation, hopefully faster than save / restore
                     c.rotate(-part.angle);
-                    c.translate(-part.position.x, -part.position.y); 
+                    c.translate(-part.position.x, -part.position.y);
                 } else {
                     // part polygon
                     if (part.circleRadius) {
@@ -8932,7 +8991,7 @@ var Mouse = _dereq_('../core/Mouse');
                                 c.moveTo(part.vertices[(j + 1) % part.vertices.length].x, part.vertices[(j + 1) % part.vertices.length].y);
                             }
                         }
-                        
+
                         c.lineTo(part.vertices[0].x, part.vertices[0].y);
                         c.closePath();
                     }
@@ -9002,7 +9061,7 @@ var Mouse = _dereq_('../core/Mouse');
                         c.moveTo(part.vertices[(j + 1) % part.vertices.length].x, part.vertices[(j + 1) % part.vertices.length].y);
                     }
                 }
-                
+
                 c.lineTo(part.vertices[0].x, part.vertices[0].y);
             }
         }
@@ -9042,7 +9101,7 @@ var Mouse = _dereq_('../core/Mouse');
             for (j = 1; j < body.vertices.length; j++) {
                 c.lineTo(body.vertices[j].x, body.vertices[j].y);
             }
-            
+
             c.lineTo(body.vertices[0].x, body.vertices[0].y);
         }
 
@@ -9170,7 +9229,7 @@ var Mouse = _dereq_('../core/Mouse');
                     for (k = 0; k < part.axes.length; k++) {
                         // render a single axis indicator
                         c.moveTo(part.position.x, part.position.y);
-                        c.lineTo((part.vertices[0].x + part.vertices[part.vertices.length-1].x) / 2, 
+                        c.lineTo((part.vertices[0].x + part.vertices[part.vertices.length-1].x) / 2,
                                  (part.vertices[0].y + part.vertices[part.vertices.length-1].y) / 2);
                     }
                 }
@@ -9345,7 +9404,7 @@ var Mouse = _dereq_('../core/Mouse');
         c.fill();
 
         c.beginPath();
-            
+
         // render collision normals
         for (i = 0; i < pairs.length; i++) {
             pair = pairs[i];
@@ -9363,7 +9422,7 @@ var Mouse = _dereq_('../core/Mouse');
                     normalPosX = (pair.activeContacts[0].vertex.x + pair.activeContacts[1].vertex.x) / 2;
                     normalPosY = (pair.activeContacts[0].vertex.y + pair.activeContacts[1].vertex.y) / 2;
                 }
-                
+
                 if (collision.bodyB === collision.supports[0].body || collision.bodyA.isStatic === true) {
                     c.moveTo(normalPosX - collision.normal.x * 8, normalPosY - collision.normal.y * 8);
                 } else {
@@ -9470,9 +9529,9 @@ var Mouse = _dereq_('../core/Mouse');
                 continue;
 
             var region = bucketId.split(/C|R/);
-            c.rect(0.5 + parseInt(region[1], 10) * grid.bucketWidth, 
-                    0.5 + parseInt(region[2], 10) * grid.bucketHeight, 
-                    grid.bucketWidth, 
+            c.rect(0.5 + parseInt(region[1], 10) * grid.bucketWidth,
+                    0.5 + parseInt(region[2], 10) * grid.bucketHeight,
+                    grid.bucketWidth,
                     grid.bucketHeight);
         }
 
@@ -9499,7 +9558,7 @@ var Mouse = _dereq_('../core/Mouse');
                 boundsHeight = render.bounds.max.y - render.bounds.min.y,
                 boundsScaleX = boundsWidth / render.options.width,
                 boundsScaleY = boundsHeight / render.options.height;
-            
+
             context.scale(1 / boundsScaleX, 1 / boundsScaleY);
             context.translate(-render.bounds.min.x, -render.bounds.min.y);
         }
@@ -9519,7 +9578,7 @@ var Mouse = _dereq_('../core/Mouse');
                 // render body selections
                 bounds = item.bounds;
                 context.beginPath();
-                context.rect(Math.floor(bounds.min.x - 3), Math.floor(bounds.min.y - 3), 
+                context.rect(Math.floor(bounds.min.x - 3), Math.floor(bounds.min.y - 3),
                              Math.floor(bounds.max.x - bounds.min.x + 6), Math.floor(bounds.max.y - bounds.min.y + 6));
                 context.closePath();
                 context.stroke();
@@ -9553,7 +9612,7 @@ var Mouse = _dereq_('../core/Mouse');
             context.fillStyle = 'rgba(255,165,0,0.1)';
             bounds = inspector.selectBounds;
             context.beginPath();
-            context.rect(Math.floor(bounds.min.x), Math.floor(bounds.min.y), 
+            context.rect(Math.floor(bounds.min.x), Math.floor(bounds.min.y),
                          Math.floor(bounds.max.x - bounds.min.x), Math.floor(bounds.max.y - bounds.min.y));
             context.closePath();
             context.stroke();
@@ -9731,7 +9790,7 @@ var Mouse = _dereq_('../core/Mouse');
      */
 
     /**
-     * A `Bounds` object that specifies the drawing view region. 
+     * A `Bounds` object that specifies the drawing view region.
      * Rendering will be automatically transformed and scaled to fit within the canvas size (`render.options.width` and `render.options.height`).
      * This allows for creating views that can pan or zoom around the scene.
      * You must also set `render.options.hasBounds` to `true` to enable bounded rendering.
diff --git a/build/matter.min.js b/build/matter.min.js
index a90a2dd..0f57f65 100644
--- a/build/matter.min.js
+++ b/build/matter.min.js
@@ -1,5 +1,5 @@
 /**
-* matter-js 0.13.0 by @liabru 2017-07-06
+* matter-js 0.14.0 by @liabru 2017-11-30
 * http://brm.io/matter-js/
 * License MIT
 */
@@ -7,44 +7,45 @@
 o._nextNonCollidingGroupId=-1,o._nextCategory=1,o.create=function(t){var n={id:a.nextId(),type:"body",label:"Body",parts:[],plugin:{},angle:0,vertices:i.fromPath("L 0 0 L 40 0 L 40 40 L 0 40"),position:{x:0,y:0},force:{x:0,y:0},torque:0,positionImpulse:{x:0,y:0},constraintImpulse:{x:0,y:0,angle:0},totalContacts:0,speed:0,angularSpeed:0,velocity:{x:0,y:0},angularVelocity:0,isSensor:!1,isStatic:!1,isSleeping:!1,motion:0,sleepThreshold:60,density:.001,restitution:0,friction:.1,frictionStatic:.5,frictionAir:.01,collisionFilter:{category:1,mask:4294967295,group:0},slop:.05,timeScale:1,render:{visible:!0,opacity:1,sprite:{xScale:1,yScale:1,xOffset:0,yOffset:0},lineWidth:0}},o=a.extend(n,t);return e(o,t),o},o.nextGroup=function(e){return e?o._nextNonCollidingGroupId--:o._nextCollidingGroupId++},o.nextCategory=function(){return o._nextCategory=o._nextCategory<<1,o._nextCategory};var e=function(e,t){t=t||{},o.set(e,{bounds:e.bounds||l.create(e.vertices),positionPrev:e.positionPrev||r.clone(e.position),
 anglePrev:e.anglePrev||e.angle,vertices:e.vertices,parts:e.parts||[e],isStatic:e.isStatic,isSleeping:e.isSleeping,parent:e.parent||e}),i.rotate(e.vertices,e.angle,e.position),c.rotate(e.axes,e.angle),l.update(e.bounds,e.vertices,e.velocity),o.set(e,{axes:t.axes||e.axes,area:t.area||e.area,mass:t.mass||e.mass,inertia:t.inertia||e.inertia});var n=e.isStatic?"#2e2b44":a.choose(["#006BA6","#0496FF","#FFBC42","#D81159","#8F2D56"]),s="#000";e.render.fillStyle=e.render.fillStyle||n,e.render.strokeStyle=e.render.strokeStyle||s,e.render.sprite.xOffset+=-(e.bounds.min.x-e.position.x)/(e.bounds.max.x-e.bounds.min.x),e.render.sprite.yOffset+=-(e.bounds.min.y-e.position.y)/(e.bounds.max.y-e.bounds.min.y)};o.set=function(e,t,n){var i;"string"==typeof t&&(i=t,t={},t[i]=n);for(i in t)if(n=t[i],t.hasOwnProperty(i))switch(i){case"isStatic":o.setStatic(e,n);break;case"isSleeping":s.set(e,n);break;case"mass":o.setMass(e,n);break;case"density":o.setDensity(e,n);break;case"inertia":o.setInertia(e,n);break;case"vertices":
 o.setVertices(e,n);break;case"position":o.setPosition(e,n);break;case"angle":o.setAngle(e,n);break;case"velocity":o.setVelocity(e,n);break;case"angularVelocity":o.setAngularVelocity(e,n);break;case"parts":o.setParts(e,n);break;default:e[i]=n}},o.setStatic=function(e,t){for(var n=0;n<e.parts.length;n++){var o=e.parts[n];o.isStatic=t,t?(o._original={restitution:o.restitution,friction:o.friction,mass:o.mass,inertia:o.inertia,density:o.density,inverseMass:o.inverseMass,inverseInertia:o.inverseInertia},o.restitution=0,o.friction=1,o.mass=o.inertia=o.density=1/0,o.inverseMass=o.inverseInertia=0,o.positionPrev.x=o.position.x,o.positionPrev.y=o.position.y,o.anglePrev=o.angle,o.angularVelocity=0,o.speed=0,o.angularSpeed=0,o.motion=0):o._original&&(o.restitution=o._original.restitution,o.friction=o._original.friction,o.mass=o._original.mass,o.inertia=o._original.inertia,o.density=o._original.density,o.inverseMass=o._original.inverseMass,o.inverseInertia=o._original.inverseInertia,delete o._original);
-}},o.setMass=function(e,t){e.mass=t,e.inverseMass=1/e.mass,e.density=e.mass/e.area},o.setDensity=function(e,t){o.setMass(e,t*e.area),e.density=t},o.setInertia=function(e,t){e.inertia=t,e.inverseInertia=1/e.inertia},o.setVertices=function(e,t){t[0].body===e?e.vertices=t:e.vertices=i.create(t,e),e.axes=c.fromVertices(e.vertices),e.area=i.area(e.vertices),o.setMass(e,e.density*e.area);var n=i.centre(e.vertices);i.translate(e.vertices,n,-1),o.setInertia(e,o._inertiaScale*i.inertia(e.vertices,e.mass)),i.translate(e.vertices,e.position),l.update(e.bounds,e.vertices,e.velocity)},o.setParts=function(e,n,r){var s;for(n=n.slice(0),e.parts.length=0,e.parts.push(e),e.parent=e,s=0;s<n.length;s++){var a=n[s];a!==e&&(a.parent=e,e.parts.push(a))}if(1!==e.parts.length){if(r="undefined"==typeof r||r){var l=[];for(s=0;s<n.length;s++)l=l.concat(n[s].vertices);i.clockwiseSort(l);var c=i.hull(l),d=i.centre(c);o.setVertices(e,c),i.translate(e.vertices,d)}var u=t(e);e.area=u.area,e.parent=e,e.position.x=u.centre.x,
-e.position.y=u.centre.y,e.positionPrev.x=u.centre.x,e.positionPrev.y=u.centre.y,o.setMass(e,u.mass),o.setInertia(e,u.inertia),o.setPosition(e,u.centre)}},o.setPosition=function(e,t){var n=r.sub(t,e.position);e.positionPrev.x+=n.x,e.positionPrev.y+=n.y;for(var o=0;o<e.parts.length;o++){var s=e.parts[o];s.position.x+=n.x,s.position.y+=n.y,i.translate(s.vertices,n),l.update(s.bounds,s.vertices,e.velocity)}},o.setAngle=function(e,t){var n=t-e.angle;e.anglePrev+=n;for(var o=0;o<e.parts.length;o++){var s=e.parts[o];s.angle+=n,i.rotate(s.vertices,n,e.position),c.rotate(s.axes,n),l.update(s.bounds,s.vertices,e.velocity),o>0&&r.rotateAbout(s.position,n,e.position,s.position)}},o.setVelocity=function(e,t){e.positionPrev.x=e.position.x-t.x,e.positionPrev.y=e.position.y-t.y,e.velocity.x=t.x,e.velocity.y=t.y,e.speed=r.magnitude(e.velocity)},o.setAngularVelocity=function(e,t){e.anglePrev=e.angle-t,e.angularVelocity=t,e.angularSpeed=Math.abs(e.angularVelocity)},o.translate=function(e,t){o.setPosition(e,r.add(e.position,t));
-},o.rotate=function(e,t,n){if(n){var i=Math.cos(t),r=Math.sin(t),s=e.position.x-n.x,a=e.position.y-n.y;o.setPosition(e,{x:n.x+(s*i-a*r),y:n.y+(s*r+a*i)}),o.setAngle(e,e.angle+t)}else o.setAngle(e,e.angle+t)},o.scale=function(e,n,r,s){for(var a=0;a<e.parts.length;a++){var d=e.parts[a];i.scale(d.vertices,n,r,e.position),d.axes=c.fromVertices(d.vertices),e.isStatic||(d.area=i.area(d.vertices),o.setMass(d,e.density*d.area),i.translate(d.vertices,{x:-d.position.x,y:-d.position.y}),o.setInertia(d,i.inertia(d.vertices,d.mass)),i.translate(d.vertices,{x:d.position.x,y:d.position.y})),l.update(d.bounds,d.vertices,e.velocity)}if(e.circleRadius&&(n===r?e.circleRadius*=n:e.circleRadius=null),!e.isStatic){var u=t(e);e.area=u.area,o.setMass(e,u.mass),o.setInertia(e,u.inertia)}},o.update=function(e,t,n,o){var s=Math.pow(t*n*e.timeScale,2),a=1-e.frictionAir*n*e.timeScale,d=e.position.x-e.positionPrev.x,u=e.position.y-e.positionPrev.y;e.velocity.x=d*a*o+e.force.x/e.mass*s,e.velocity.y=u*a*o+e.force.y/e.mass*s,
-e.positionPrev.x=e.position.x,e.positionPrev.y=e.position.y,e.position.x+=e.velocity.x,e.position.y+=e.velocity.y,e.angularVelocity=(e.angle-e.anglePrev)*a*o+e.torque/e.inertia*s,e.anglePrev=e.angle,e.angle+=e.angularVelocity,e.speed=r.magnitude(e.velocity),e.angularSpeed=Math.abs(e.angularVelocity);for(var p=0;p<e.parts.length;p++){var f=e.parts[p];i.translate(f.vertices,e.velocity),p>0&&(f.position.x+=e.velocity.x,f.position.y+=e.velocity.y),0!==e.angularVelocity&&(i.rotate(f.vertices,e.angularVelocity,e.position),c.rotate(f.axes,e.angularVelocity),p>0&&r.rotateAbout(f.position,e.angularVelocity,e.position,f.position)),l.update(f.bounds,f.vertices,e.velocity)}},o.applyForce=function(e,t,n){e.force.x+=n.x,e.force.y+=n.y;var o={x:t.x-e.position.x,y:t.y-e.position.y};e.torque+=o.x*n.y-o.y*n.x};var t=function(e){for(var t={mass:0,area:0,inertia:0,centre:{x:0,y:0}},n=1===e.parts.length?0:1;n<e.parts.length;n++){var o=e.parts[n];t.mass+=o.mass,t.area+=o.area,t.inertia+=o.inertia,t.centre=r.add(t.centre,r.mult(o.position,o.mass!==1/0?o.mass:1));
-}return t.centre=r.div(t.centre,t.mass!==1/0?t.mass:e.parts.length),t}}()},{"../core/Common":14,"../core/Sleeping":22,"../geometry/Axes":25,"../geometry/Bounds":26,"../geometry/Vector":28,"../geometry/Vertices":29,"../render/Render":31}],2:[function(e,t,n){var o={};t.exports=o;var i=e("../core/Events"),r=e("../core/Common"),s=e("./Body");!function(){o.create=function(e){return r.extend({id:r.nextId(),type:"composite",parent:null,isModified:!1,bodies:[],constraints:[],composites:[],label:"Composite",plugin:{}},e)},o.setModified=function(e,t,n,i){if(e.isModified=t,n&&e.parent&&o.setModified(e.parent,t,n,i),i)for(var r=0;r<e.composites.length;r++){var s=e.composites[r];o.setModified(s,t,n,i)}},o.add=function(e,t){var n=[].concat(t);i.trigger(e,"beforeAdd",{object:t});for(var s=0;s<n.length;s++){var a=n[s];switch(a.type){case"body":if(a.parent!==a){r.warn("Composite.add: skipped adding a compound body part (you must add its parent instead)");break}o.addBody(e,a);break;case"constraint":o.addConstraint(e,a);
-break;case"composite":o.addComposite(e,a);break;case"mouseConstraint":o.addConstraint(e,a.constraint)}}return i.trigger(e,"afterAdd",{object:t}),e},o.remove=function(e,t,n){var r=[].concat(t);i.trigger(e,"beforeRemove",{object:t});for(var s=0;s<r.length;s++){var a=r[s];switch(a.type){case"body":o.removeBody(e,a,n);break;case"constraint":o.removeConstraint(e,a,n);break;case"composite":o.removeComposite(e,a,n);break;case"mouseConstraint":o.removeConstraint(e,a.constraint)}}return i.trigger(e,"afterRemove",{object:t}),e},o.addComposite=function(e,t){return e.composites.push(t),t.parent=e,o.setModified(e,!0,!0,!1),e},o.removeComposite=function(e,t,n){var i=r.indexOf(e.composites,t);if(i!==-1&&(o.removeCompositeAt(e,i),o.setModified(e,!0,!0,!1)),n)for(var s=0;s<e.composites.length;s++)o.removeComposite(e.composites[s],t,!0);return e},o.removeCompositeAt=function(e,t){return e.composites.splice(t,1),o.setModified(e,!0,!0,!1),e},o.addBody=function(e,t){return e.bodies.push(t),o.setModified(e,!0,!0,!1),
-e},o.removeBody=function(e,t,n){var i=r.indexOf(e.bodies,t);if(i!==-1&&(o.removeBodyAt(e,i),o.setModified(e,!0,!0,!1)),n)for(var s=0;s<e.composites.length;s++)o.removeBody(e.composites[s],t,!0);return e},o.removeBodyAt=function(e,t){return e.bodies.splice(t,1),o.setModified(e,!0,!0,!1),e},o.addConstraint=function(e,t){return e.constraints.push(t),o.setModified(e,!0,!0,!1),e},o.removeConstraint=function(e,t,n){var i=r.indexOf(e.constraints,t);if(i!==-1&&o.removeConstraintAt(e,i),n)for(var s=0;s<e.composites.length;s++)o.removeConstraint(e.composites[s],t,!0);return e},o.removeConstraintAt=function(e,t){return e.constraints.splice(t,1),o.setModified(e,!0,!0,!1),e},o.clear=function(e,t,n){if(n)for(var i=0;i<e.composites.length;i++)o.clear(e.composites[i],t,!0);return t?e.bodies=e.bodies.filter(function(e){return e.isStatic}):e.bodies.length=0,e.constraints.length=0,e.composites.length=0,o.setModified(e,!0,!0,!1),e},o.allBodies=function(e){for(var t=[].concat(e.bodies),n=0;n<e.composites.length;n++)t=t.concat(o.allBodies(e.composites[n]));
-return t},o.allConstraints=function(e){for(var t=[].concat(e.constraints),n=0;n<e.composites.length;n++)t=t.concat(o.allConstraints(e.composites[n]));return t},o.allComposites=function(e){for(var t=[].concat(e.composites),n=0;n<e.composites.length;n++)t=t.concat(o.allComposites(e.composites[n]));return t},o.get=function(e,t,n){var i,r;switch(n){case"body":i=o.allBodies(e);break;case"constraint":i=o.allConstraints(e);break;case"composite":i=o.allComposites(e).concat(e)}return i?(r=i.filter(function(e){return e.id.toString()===t.toString()}),0===r.length?null:r[0]):null},o.move=function(e,t,n){return o.remove(e,t),o.add(n,t),e},o.rebase=function(e){for(var t=o.allBodies(e).concat(o.allConstraints(e)).concat(o.allComposites(e)),n=0;n<t.length;n++)t[n].id=r.nextId();return o.setModified(e,!0,!0,!1),e},o.translate=function(e,t,n){for(var i=n?o.allBodies(e):e.bodies,r=0;r<i.length;r++)s.translate(i[r],t);return o.setModified(e,!0,!0,!1),e},o.rotate=function(e,t,n,i){for(var r=Math.cos(t),a=Math.sin(t),l=i?o.allBodies(e):e.bodies,c=0;c<l.length;c++){
-var d=l[c],u=d.position.x-n.x,p=d.position.y-n.y;s.setPosition(d,{x:n.x+(u*r-p*a),y:n.y+(u*a+p*r)}),s.rotate(d,t)}return o.setModified(e,!0,!0,!1),e},o.scale=function(e,t,n,i,r){for(var a=r?o.allBodies(e):e.bodies,l=0;l<a.length;l++){var c=a[l],d=c.position.x-i.x,u=c.position.y-i.y;s.setPosition(c,{x:i.x+d*t,y:i.y+u*n}),s.scale(c,t,n)}return o.setModified(e,!0,!0,!1),e},o.bounds=function(e){for(var t=Matter.Composite.allBodies(e),n=[],o=0;o<t.length;o+=1){var i=t[o];n.push(i.bounds.min,i.bounds.max)}return Matter.Bounds.create(n)}}()},{"../core/Common":14,"../core/Events":16,"./Body":1}],3:[function(e,t,n){var o={};t.exports=o;var i=e("./Composite"),r=(e("../constraint/Constraint"),e("../core/Common"));!function(){o.create=function(e){var t=i.create(),n={label:"World",gravity:{x:0,y:1,scale:.001},bounds:{min:{x:-(1/0),y:-(1/0)},max:{x:1/0,y:1/0}}};return r.extend(t,n,e)}}()},{"../constraint/Constraint":12,"../core/Common":14,"./Composite":2}],4:[function(e,t,n){var o={};t.exports=o,function(){
-o.create=function(e){return{id:o.id(e),vertex:e,normalImpulse:0,tangentImpulse:0}},o.id=function(e){return e.body.id+"_"+e.index}}()},{}],5:[function(e,t,n){var o={};t.exports=o;var i=e("./SAT"),r=e("./Pair"),s=e("../geometry/Bounds");!function(){o.collisions=function(e,t){for(var n=[],a=t.pairs.table,l=0;l<e.length;l++){var c=e[l][0],d=e[l][1];if((!c.isStatic&&!c.isSleeping||!d.isStatic&&!d.isSleeping)&&o.canCollide(c.collisionFilter,d.collisionFilter)&&s.overlaps(c.bounds,d.bounds))for(var u=c.parts.length>1?1:0;u<c.parts.length;u++)for(var p=c.parts[u],f=d.parts.length>1?1:0;f<d.parts.length;f++){var m=d.parts[f];if(p===c&&m===d||s.overlaps(p.bounds,m.bounds)){var v,y=r.id(p,m),g=a[y];v=g&&g.isActive?g.collision:null;var x=i.collides(p,m,v);x.collided&&n.push(x)}}}return n},o.canCollide=function(e,t){return e.group===t.group&&0!==e.group?e.group>0:0!==(e.mask&t.category)&&0!==(t.mask&e.category)}}()},{"../geometry/Bounds":26,"./Pair":7,"./SAT":11}],6:[function(e,t,n){var o={};t.exports=o;
-var i=e("./Pair"),r=e("./Detector"),s=e("../core/Common");!function(){o.create=function(e){var t={controller:o,detector:r.collisions,buckets:{},pairs:{},pairsList:[],bucketWidth:48,bucketHeight:48};return s.extend(t,e)},o.update=function(n,o,i,r){var s,p,f,m,v,y=i.world,g=n.buckets,x=!1;for(s=0;s<o.length;s++){var h=o[s];if((!h.isSleeping||r)&&!(h.bounds.max.x<y.bounds.min.x||h.bounds.min.x>y.bounds.max.x||h.bounds.max.y<y.bounds.min.y||h.bounds.min.y>y.bounds.max.y)){var b=t(n,h);if(!h.region||b.id!==h.region.id||r){h.region&&!r||(h.region=b);var w=e(b,h.region);for(p=w.startCol;p<=w.endCol;p++)for(f=w.startRow;f<=w.endRow;f++){v=a(p,f),m=g[v];var S=p>=b.startCol&&p<=b.endCol&&f>=b.startRow&&f<=b.endRow,C=p>=h.region.startCol&&p<=h.region.endCol&&f>=h.region.startRow&&f<=h.region.endRow;!S&&C&&C&&m&&d(n,m,h),(h.region===b||S&&!C||r)&&(m||(m=l(g,v)),c(n,m,h))}h.region=b,x=!0}}}x&&(n.pairsList=u(n))},o.clear=function(e){e.buckets={},e.pairs={},e.pairsList=[]};var e=function(e,t){var o=Math.min(e.startCol,t.startCol),i=Math.max(e.endCol,t.endCol),r=Math.min(e.startRow,t.startRow),s=Math.max(e.endRow,t.endRow);
-return n(o,i,r,s)},t=function(e,t){var o=t.bounds,i=Math.floor(o.min.x/e.bucketWidth),r=Math.floor(o.max.x/e.bucketWidth),s=Math.floor(o.min.y/e.bucketHeight),a=Math.floor(o.max.y/e.bucketHeight);return n(i,r,s,a)},n=function(e,t,n,o){return{id:e+","+t+","+n+","+o,startCol:e,endCol:t,startRow:n,endRow:o}},a=function(e,t){return"C"+e+"R"+t},l=function(e,t){var n=e[t]=[];return n},c=function(e,t,n){for(var o=0;o<t.length;o++){var r=t[o];if(!(n.id===r.id||n.isStatic&&r.isStatic)){var s=i.id(n,r),a=e.pairs[s];a?a[2]+=1:e.pairs[s]=[n,r,1]}}t.push(n)},d=function(e,t,n){t.splice(s.indexOf(t,n),1);for(var o=0;o<t.length;o++){var r=t[o],a=i.id(n,r),l=e.pairs[a];l&&(l[2]-=1)}},u=function(e){var t,n,o=[];t=s.keys(e.pairs);for(var i=0;i<t.length;i++)n=e.pairs[t[i]],n[2]>0?o.push(n):delete e.pairs[t[i]];return o}}()},{"../core/Common":14,"./Detector":5,"./Pair":7}],7:[function(e,t,n){var o={};t.exports=o;var i=e("./Contact");!function(){o.create=function(e,t){var n=e.bodyA,i=e.bodyB,r=e.parentA,s=e.parentB,a={
-id:o.id(n,i),bodyA:n,bodyB:i,contacts:{},activeContacts:[],separation:0,isActive:!0,isSensor:n.isSensor||i.isSensor,timeCreated:t,timeUpdated:t,inverseMass:r.inverseMass+s.inverseMass,friction:Math.min(r.friction,s.friction),frictionStatic:Math.max(r.frictionStatic,s.frictionStatic),restitution:Math.max(r.restitution,s.restitution),slop:Math.max(r.slop,s.slop)};return o.update(a,e,t),a},o.update=function(e,t,n){var r=e.contacts,s=t.supports,a=e.activeContacts,l=t.parentA,c=t.parentB;if(e.collision=t,e.inverseMass=l.inverseMass+c.inverseMass,e.friction=Math.min(l.friction,c.friction),e.frictionStatic=Math.max(l.frictionStatic,c.frictionStatic),e.restitution=Math.max(l.restitution,c.restitution),e.slop=Math.max(l.slop,c.slop),a.length=0,t.collided){for(var d=0;d<s.length;d++){var u=s[d],p=i.id(u),f=r[p];f?a.push(f):a.push(r[p]=i.create(u))}e.separation=t.depth,o.setActive(e,!0,n)}else e.isActive===!0&&o.setActive(e,!1,n)},o.setActive=function(e,t,n){t?(e.isActive=!0,e.timeUpdated=n):(e.isActive=!1,
-e.activeContacts.length=0)},o.id=function(e,t){return e.id<t.id?"A"+e.id+"B"+t.id:"A"+t.id+"B"+e.id}}()},{"./Contact":4}],8:[function(e,t,n){var o={};t.exports=o;var i=e("./Pair"),r=e("../core/Common");!function(){var e=1e3;o.create=function(e){return r.extend({table:{},list:[],collisionStart:[],collisionActive:[],collisionEnd:[]},e)},o.update=function(e,t,n){var o,s,a,l,c=e.list,d=e.table,u=e.collisionStart,p=e.collisionEnd,f=e.collisionActive,m=[];for(u.length=0,p.length=0,f.length=0,l=0;l<t.length;l++)o=t[l],o.collided&&(s=i.id(o.bodyA,o.bodyB),m.push(s),a=d[s],a?(a.isActive?f.push(a):u.push(a),i.update(a,o,n)):(a=i.create(o,n),d[s]=a,u.push(a),c.push(a)));for(l=0;l<c.length;l++)a=c[l],a.isActive&&r.indexOf(m,a.id)===-1&&(i.setActive(a,!1,n),p.push(a))},o.removeOld=function(t,n){var o,i,r,s,a=t.list,l=t.table,c=[];for(s=0;s<a.length;s++)o=a[s],i=o.collision,i.bodyA.isSleeping||i.bodyB.isSleeping?o.timeUpdated=n:n-o.timeUpdated>e&&c.push(s);for(s=0;s<c.length;s++)r=c[s]-s,o=a[r],delete l[o.id],
-a.splice(r,1)},o.clear=function(e){return e.table={},e.list.length=0,e.collisionStart.length=0,e.collisionActive.length=0,e.collisionEnd.length=0,e}}()},{"../core/Common":14,"./Pair":7}],9:[function(e,t,n){var o={};t.exports=o;var i=e("../geometry/Vector"),r=e("./SAT"),s=e("../geometry/Bounds"),a=e("../factory/Bodies"),l=e("../geometry/Vertices");!function(){o.ray=function(e,t,n,o){o=o||1e-100;for(var l=i.angle(t,n),c=i.magnitude(i.sub(t,n)),d=.5*(n.x+t.x),u=.5*(n.y+t.y),p=a.rectangle(d,u,c,o,{angle:l}),f=[],m=0;m<e.length;m++){var v=e[m];if(s.overlaps(v.bounds,p.bounds))for(var y=1===v.parts.length?0:1;y<v.parts.length;y++){var g=v.parts[y];if(s.overlaps(g.bounds,p.bounds)){var x=r.collides(g,p);if(x.collided){x.body=x.bodyA=x.bodyB=v,f.push(x);break}}}}return f},o.region=function(e,t,n){for(var o=[],i=0;i<e.length;i++){var r=e[i],a=s.overlaps(r.bounds,t);(a&&!n||!a&&n)&&o.push(r)}return o},o.point=function(e,t){for(var n=[],o=0;o<e.length;o++){var i=e[o];if(s.contains(i.bounds,t))for(var r=1===i.parts.length?0:1;r<i.parts.length;r++){
-var a=i.parts[r];if(s.contains(a.bounds,t)&&l.contains(a.vertices,t)){n.push(i);break}}}return n}}()},{"../factory/Bodies":23,"../geometry/Bounds":26,"../geometry/Vector":28,"../geometry/Vertices":29,"./SAT":11}],10:[function(e,t,n){var o={};t.exports=o;var i=e("../geometry/Vertices"),r=e("../geometry/Vector"),s=e("../core/Common"),a=e("../geometry/Bounds");!function(){o._restingThresh=4,o._restingThreshTangent=6,o._positionDampen=.9,o._positionWarming=.8,o._frictionNormalMultiplier=5,o.preSolvePosition=function(e){var t,n,o;for(t=0;t<e.length;t++)n=e[t],n.isActive&&(o=n.activeContacts.length,n.collision.parentA.totalContacts+=o,n.collision.parentB.totalContacts+=o)},o.solvePosition=function(e,t){var n,i,s,a,l,c,d,u,p,f=r._temp[0],m=r._temp[1],v=r._temp[2],y=r._temp[3];for(n=0;n<e.length;n++)i=e[n],i.isActive&&!i.isSensor&&(s=i.collision,a=s.parentA,l=s.parentB,c=s.normal,d=r.sub(r.add(l.positionImpulse,l.position,f),r.add(a.positionImpulse,r.sub(l.position,s.penetration,m),v),y),i.separation=r.dot(c,d));
-for(n=0;n<e.length;n++)i=e[n],i.isActive&&!i.isSensor&&(s=i.collision,a=s.parentA,l=s.parentB,c=s.normal,p=(i.separation-i.slop)*t,(a.isStatic||l.isStatic)&&(p*=2),a.isStatic||a.isSleeping||(u=o._positionDampen/a.totalContacts,a.positionImpulse.x+=c.x*p*u,a.positionImpulse.y+=c.y*p*u),l.isStatic||l.isSleeping||(u=o._positionDampen/l.totalContacts,l.positionImpulse.x-=c.x*p*u,l.positionImpulse.y-=c.y*p*u))},o.postSolvePosition=function(e){for(var t=0;t<e.length;t++){var n=e[t];if(n.totalContacts=0,0!==n.positionImpulse.x||0!==n.positionImpulse.y){for(var s=0;s<n.parts.length;s++){var l=n.parts[s];i.translate(l.vertices,n.positionImpulse),a.update(l.bounds,l.vertices,n.velocity),l.position.x+=n.positionImpulse.x,l.position.y+=n.positionImpulse.y}n.positionPrev.x+=n.positionImpulse.x,n.positionPrev.y+=n.positionImpulse.y,r.dot(n.positionImpulse,n.velocity)<0?(n.positionImpulse.x=0,n.positionImpulse.y=0):(n.positionImpulse.x*=o._positionWarming,n.positionImpulse.y*=o._positionWarming)}}},o.preSolveVelocity=function(e){
-var t,n,o,i,s,a,l,c,d,u,p,f,m,v,y=r._temp[0],g=r._temp[1];for(t=0;t<e.length;t++)if(o=e[t],o.isActive&&!o.isSensor)for(i=o.activeContacts,s=o.collision,a=s.parentA,l=s.parentB,c=s.normal,d=s.tangent,n=0;n<i.length;n++)u=i[n],p=u.vertex,f=u.normalImpulse,m=u.tangentImpulse,0===f&&0===m||(y.x=c.x*f+d.x*m,y.y=c.y*f+d.y*m,a.isStatic||a.isSleeping||(v=r.sub(p,a.position,g),a.positionPrev.x+=y.x*a.inverseMass,a.positionPrev.y+=y.y*a.inverseMass,a.anglePrev+=r.cross(v,y)*a.inverseInertia),l.isStatic||l.isSleeping||(v=r.sub(p,l.position,g),l.positionPrev.x-=y.x*l.inverseMass,l.positionPrev.y-=y.y*l.inverseMass,l.anglePrev-=r.cross(v,y)*l.inverseInertia))},o.solveVelocity=function(e,t){for(var n=t*t,i=r._temp[0],a=r._temp[1],l=r._temp[2],c=r._temp[3],d=r._temp[4],u=r._temp[5],p=0;p<e.length;p++){var f=e[p];if(f.isActive&&!f.isSensor){var m=f.collision,v=m.parentA,y=m.parentB,g=m.normal,x=m.tangent,h=f.activeContacts,b=1/h.length;v.velocity.x=v.position.x-v.positionPrev.x,v.velocity.y=v.position.y-v.positionPrev.y,
-y.velocity.x=y.position.x-y.positionPrev.x,y.velocity.y=y.position.y-y.positionPrev.y,v.angularVelocity=v.angle-v.anglePrev,y.angularVelocity=y.angle-y.anglePrev;for(var w=0;w<h.length;w++){var S=h[w],C=S.vertex,A=r.sub(C,v.position,a),P=r.sub(C,y.position,l),B=r.add(v.velocity,r.mult(r.perp(A),v.angularVelocity),c),M=r.add(y.velocity,r.mult(r.perp(P),y.angularVelocity),d),k=r.sub(B,M,u),I=r.dot(g,k),T=r.dot(x,k),V=Math.abs(T),_=s.sign(T),R=(1+f.restitution)*I,E=s.clamp(f.separation+I,0,1)*o._frictionNormalMultiplier,L=T,F=1/0;V>f.friction*f.frictionStatic*E*n&&(F=V,L=s.clamp(f.friction*_*n,-F,F));var O=r.cross(A,g),q=r.cross(P,g),W=b/(v.inverseMass+y.inverseMass+v.inverseInertia*O*O+y.inverseInertia*q*q);if(R*=W,L*=W,I<0&&I*I>o._restingThresh*n)S.normalImpulse=0;else{var D=S.normalImpulse;S.normalImpulse=Math.min(S.normalImpulse+R,0),R=S.normalImpulse-D}if(T*T>o._restingThreshTangent*n)S.tangentImpulse=0;else{var N=S.tangentImpulse;S.tangentImpulse=s.clamp(S.tangentImpulse+L,-F,F),L=S.tangentImpulse-N;
-}i.x=g.x*R+x.x*L,i.y=g.y*R+x.y*L,v.isStatic||v.isSleeping||(v.positionPrev.x+=i.x*v.inverseMass,v.positionPrev.y+=i.y*v.inverseMass,v.anglePrev+=r.cross(A,i)*v.inverseInertia),y.isStatic||y.isSleeping||(y.positionPrev.x-=i.x*y.inverseMass,y.positionPrev.y-=i.y*y.inverseMass,y.anglePrev-=r.cross(P,i)*y.inverseInertia)}}}}}()},{"../core/Common":14,"../geometry/Bounds":26,"../geometry/Vector":28,"../geometry/Vertices":29}],11:[function(e,t,n){var o={};t.exports=o;var i=e("../geometry/Vertices"),r=e("../geometry/Vector");!function(){o.collides=function(t,o,s){var a,l,c,d,u=!1;if(s){var p=t.parent,f=o.parent,m=p.speed*p.speed+p.angularSpeed*p.angularSpeed+f.speed*f.speed+f.angularSpeed*f.angularSpeed;u=s&&s.collided&&m<.2,d=s}else d={collided:!1,bodyA:t,bodyB:o};if(s&&u){var v=d.axisBody,y=v===t?o:t,g=[v.axes[s.axisNumber]];if(c=e(v.vertices,y.vertices,g),d.reused=!0,c.overlap<=0)return d.collided=!1,d}else{if(a=e(t.vertices,o.vertices,t.axes),a.overlap<=0)return d.collided=!1,d;if(l=e(o.vertices,t.vertices,o.axes),
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-c;i<c.overlap&&(c.overlap=i,c.axis=s,c.axisNumber=d)}return c},t=function(e,t,n){for(var o=r.dot(t[0],n),i=o,s=1;s<t.length;s+=1){var a=r.dot(t[s],n);a>i?i=a:a<o&&(o=a)}e.min=o,e.max=i},n=function(e,t,n){for(var o,i,s,a,l=Number.MAX_VALUE,c=r._temp[0],d=t.vertices,u=e.position,p=0;p<d.length;p++)i=d[p],c.x=i.x-u.x,c.y=i.y-u.y,o=-r.dot(n,c),o<l&&(l=o,s=i);var f=s.index-1>=0?s.index-1:d.length-1;i=d[f],c.x=i.x-u.x,c.y=i.y-u.y,l=-r.dot(n,c),a=i;var m=(s.index+1)%d.length;return i=d[m],c.x=i.x-u.x,c.y=i.y-u.y,o=-r.dot(n,c),o<l&&(a=i),[s,a]}}()},{"../geometry/Vector":28,"../geometry/Vertices":29}],12:[function(e,t,n){var o={};t.exports=o;var i=e("../geometry/Vertices"),r=e("../geometry/Vector"),s=e("../core/Sleeping"),a=e("../geometry/Bounds"),l=e("../geometry/Axes"),c=e("../core/Common");!function(){o._warming=.4,o._torqueDampen=1,o._minLength=1e-6,o.create=function(e){var t=e;t.bodyA&&!t.pointA&&(t.pointA={x:0,y:0}),t.bodyB&&!t.pointB&&(t.pointB={x:0,y:0});var n=t.bodyA?r.add(t.bodyA.position,t.pointA):t.pointA,o=t.bodyB?r.add(t.bodyB.position,t.pointB):t.pointB,i=r.magnitude(r.sub(n,o));
-t.length="undefined"!=typeof t.length?t.length:i,t.id=t.id||c.nextId(),t.label=t.label||"Constraint",t.type="constraint",t.stiffness=t.stiffness||(t.length>0?1:.7),t.damping=t.damping||0,t.angularStiffness=t.angularStiffness||0,t.angleA=t.bodyA?t.bodyA.angle:t.angleA,t.angleB=t.bodyB?t.bodyB.angle:t.angleB,t.plugin={};var s={visible:!0,lineWidth:2,strokeStyle:"#ffffff",type:"line",anchors:!0};return 0===t.length&&t.stiffness>.1?(s.type="pin",s.anchors=!1):t.stiffness<.9&&(s.type="spring"),t.render=c.extend(s,t.render),t},o.preSolveAll=function(e){for(var t=0;t<e.length;t+=1){var n=e[t],o=n.constraintImpulse;n.isStatic||0===o.x&&0===o.y&&0===o.angle||(n.position.x+=o.x,n.position.y+=o.y,n.angle+=o.angle)}},o.solveAll=function(e,t){for(var n=0;n<e.length;n+=1){var i=e[n],r=!i.bodyA||i.bodyA&&i.bodyA.isStatic,s=!i.bodyB||i.bodyB&&i.bodyB.isStatic;(r||s)&&o.solve(e[n],t)}for(n=0;n<e.length;n+=1)i=e[n],r=!i.bodyA||i.bodyA&&i.bodyA.isStatic,s=!i.bodyB||i.bodyB&&i.bodyB.isStatic,r||s||o.solve(e[n],t);
-},o.solve=function(e,t){var n=e.bodyA,i=e.bodyB,s=e.pointA,a=e.pointB;if(n||i){n&&!n.isStatic&&(r.rotate(s,n.angle-e.angleA,s),e.angleA=n.angle),i&&!i.isStatic&&(r.rotate(a,i.angle-e.angleB,a),e.angleB=i.angle);var l=s,c=a;if(n&&(l=r.add(n.position,s)),i&&(c=r.add(i.position,a)),l&&c){var d=r.sub(l,c),u=r.magnitude(d);u<o._minLength&&(u=o._minLength);var p,f,m,v,y,g=(u-e.length)/u,x=e.stiffness<1?e.stiffness*t:e.stiffness,h=r.mult(d,g*x),b=(n?n.inverseMass:0)+(i?i.inverseMass:0),w=(n?n.inverseInertia:0)+(i?i.inverseInertia:0),S=b+w;if(e.damping){var C=r.create();m=r.div(d,u),y=r.sub(i&&r.sub(i.position,i.positionPrev)||C,n&&r.sub(n.position,n.positionPrev)||C),v=r.dot(m,y)}n&&!n.isStatic&&(f=n.inverseMass/b,n.constraintImpulse.x-=h.x*f,n.constraintImpulse.y-=h.y*f,n.position.x-=h.x*f,n.position.y-=h.y*f,e.damping&&(n.positionPrev.x-=e.damping*m.x*v*f,n.positionPrev.y-=e.damping*m.y*v*f),p=r.cross(s,h)/S*o._torqueDampen*n.inverseInertia*(1-e.angularStiffness),n.constraintImpulse.angle-=p,
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-plugin:{},timing:{timestamp:0,timeScale:1},broadphase:{controller:c}},o=f.extend(n,t);if(e||o.render){var r={element:e,controller:a};o.render=f.extend(r,o.render)}return o.render&&o.render.controller&&(o.render=o.render.controller.create(o.render)),o.render&&(o.render.engine=o),o.world=t.world||i.create(o.world),o.pairs=l.create(),o.broadphase=o.broadphase.controller.create(o.broadphase),o.metrics=o.metrics||{extended:!1},o},o.update=function(o,i,a){i=i||1e3/60,a=a||1;var c,f=o.world,m=o.timing,v=o.broadphase,y=[];m.timestamp+=i*m.timeScale;var g={timestamp:m.timestamp};d.trigger(o,"beforeUpdate",g);var x=u.allBodies(f),h=u.allConstraints(f);for(o.enableSleeping&&r.update(x,m.timeScale),t(x,f.gravity),n(x,i,m.timeScale,a,f.bounds),p.preSolveAll(x),c=0;c<o.constraintIterations;c++)p.solveAll(h,m.timeScale);p.postSolveAll(x),v.controller?(f.isModified&&v.controller.clear(v),v.controller.update(v,x,o,f.isModified),y=v.pairsList):y=x,f.isModified&&u.setModified(f,!1,!1,!0);var b=v.detector(y,o),w=o.pairs,S=m.timestamp;
-for(l.update(w,b,S),l.removeOld(w,S),o.enableSleeping&&r.afterCollisions(w.list,m.timeScale),w.collisionStart.length>0&&d.trigger(o,"collisionStart",{pairs:w.collisionStart}),s.preSolvePosition(w.list),c=0;c<o.positionIterations;c++)s.solvePosition(w.list,m.timeScale);for(s.postSolvePosition(x),p.preSolveAll(x),c=0;c<o.constraintIterations;c++)p.solveAll(h,m.timeScale);for(p.postSolveAll(x),s.preSolveVelocity(w.list),c=0;c<o.velocityIterations;c++)s.solveVelocity(w.list,m.timeScale);return w.collisionActive.length>0&&d.trigger(o,"collisionActive",{pairs:w.collisionActive}),w.collisionEnd.length>0&&d.trigger(o,"collisionEnd",{pairs:w.collisionEnd}),e(x),d.trigger(o,"afterUpdate",g),o},o.merge=function(e,t){if(f.extend(e,t),t.world){e.world=t.world,o.clear(e);for(var n=u.allBodies(e.world),i=0;i<n.length;i++){var s=n[i];r.set(s,!1),s.id=f.nextId()}}},o.clear=function(e){var t=e.world;l.clear(e.pairs);var n=e.broadphase;if(n.controller){var o=u.allBodies(t);n.controller.clear(n),n.controller.update(n,o,e,!0);
-}};var e=function(e){for(var t=0;t<e.length;t++){var n=e[t];n.force.x=0,n.force.y=0,n.torque=0}},t=function(e,t){var n="undefined"!=typeof t.scale?t.scale:.001;if((0!==t.x||0!==t.y)&&0!==n)for(var o=0;o<e.length;o++){var i=e[o];i.isStatic||i.isSleeping||(i.force.y+=i.mass*t.y*n,i.force.x+=i.mass*t.x*n)}},n=function(e,t,n,o,i){for(var r=0;r<e.length;r++){var s=e[r];s.isStatic||s.isSleeping||m.update(s,t,n,o)}}}()},{"../body/Body":1,"../body/Composite":2,"../body/World":3,"../collision/Grid":6,"../collision/Pairs":8,"../collision/Resolver":10,"../constraint/Constraint":12,"../render/Render":31,"./Common":14,"./Events":16,"./Metrics":18,"./Sleeping":22}],16:[function(e,t,n){var o={};t.exports=o;var i=e("./Common");!function(){o.on=function(e,t,n){for(var o,i=t.split(" "),r=0;r<i.length;r++)o=i[r],e.events=e.events||{},e.events[o]=e.events[o]||[],e.events[o].push(n);return n},o.off=function(e,t,n){if(!t)return void(e.events={});"function"==typeof t&&(n=t,t=i.keys(e.events).join(" "));for(var o=t.split(" "),r=0;r<o.length;r++){
-var s=e.events[o[r]],a=[];if(n&&s)for(var l=0;l<s.length;l++)s[l]!==n&&a.push(s[l]);e.events[o[r]]=a}},o.trigger=function(e,t,n){var o,r,s,a;if(e.events){n||(n={}),o=t.split(" ");for(var l=0;l<o.length;l++)if(r=o[l],s=e.events[r]){a=i.clone(n,!1),a.name=r,a.source=e;for(var c=0;c<s.length;c++)s[c].apply(e,[a])}}}}()},{"./Common":14}],17:[function(e,t,n){var o={};t.exports=o;var i=e("./Plugin"),r=e("./Common");!function(){o.name="matter-js",o.version="0.13.0",o.uses=[],o.used=[],o.use=function(){i.use(o,Array.prototype.slice.call(arguments))},o.before=function(e,t){return e=e.replace(/^Matter./,""),r.chainPathBefore(o,e,t)},o.after=function(e,t){return e=e.replace(/^Matter./,""),r.chainPathAfter(o,e,t)}}()},{"./Common":14,"./Plugin":20}],18:[function(e,t,n){},{"../body/Composite":2,"./Common":14}],19:[function(e,t,n){var o={};t.exports=o;var i=e("../core/Common");!function(){o.create=function(t){var n={};return t||i.log("Mouse.create: element was undefined, defaulting to document.body","warn"),
-n.element=t||document.body,n.absolute={x:0,y:0},n.position={x:0,y:0},n.mousedownPosition={x:0,y:0},n.mouseupPosition={x:0,y:0},n.offset={x:0,y:0},n.scale={x:1,y:1},n.wheelDelta=0,n.button=-1,n.pixelRatio=n.element.getAttribute("data-pixel-ratio")||1,n.sourceEvents={mousemove:null,mousedown:null,mouseup:null,mousewheel:null},n.mousemove=function(t){var o=e(t,n.element,n.pixelRatio),i=t.changedTouches;i&&(n.button=0,t.preventDefault()),n.absolute.x=o.x,n.absolute.y=o.y,n.position.x=n.absolute.x*n.scale.x+n.offset.x,n.position.y=n.absolute.y*n.scale.y+n.offset.y,n.sourceEvents.mousemove=t},n.mousedown=function(t){var o=e(t,n.element,n.pixelRatio),i=t.changedTouches;i?(n.button=0,t.preventDefault()):n.button=t.button,n.absolute.x=o.x,n.absolute.y=o.y,n.position.x=n.absolute.x*n.scale.x+n.offset.x,n.position.y=n.absolute.y*n.scale.y+n.offset.y,n.mousedownPosition.x=n.position.x,n.mousedownPosition.y=n.position.y,n.sourceEvents.mousedown=t},n.mouseup=function(t){var o=e(t,n.element,n.pixelRatio),i=t.changedTouches;
-i&&t.preventDefault(),n.button=-1,n.absolute.x=o.x,n.absolute.y=o.y,n.position.x=n.absolute.x*n.scale.x+n.offset.x,n.position.y=n.absolute.y*n.scale.y+n.offset.y,n.mouseupPosition.x=n.position.x,n.mouseupPosition.y=n.position.y,n.sourceEvents.mouseup=t},n.mousewheel=function(e){n.wheelDelta=Math.max(-1,Math.min(1,e.wheelDelta||-e.detail)),e.preventDefault()},o.setElement(n,n.element),n},o.setElement=function(e,t){e.element=t,t.addEventListener("mousemove",e.mousemove),t.addEventListener("mousedown",e.mousedown),t.addEventListener("mouseup",e.mouseup),t.addEventListener("mousewheel",e.mousewheel),t.addEventListener("DOMMouseScroll",e.mousewheel),t.addEventListener("touchmove",e.mousemove),t.addEventListener("touchstart",e.mousedown),t.addEventListener("touchend",e.mouseup)},o.clearSourceEvents=function(e){e.sourceEvents.mousemove=null,e.sourceEvents.mousedown=null,e.sourceEvents.mouseup=null,e.sourceEvents.mousewheel=null,e.wheelDelta=0},o.setOffset=function(e,t){e.offset.x=t.x,e.offset.y=t.y,
-e.position.x=e.absolute.x*e.scale.x+e.offset.x,e.position.y=e.absolute.y*e.scale.y+e.offset.y},o.setScale=function(e,t){e.scale.x=t.x,e.scale.y=t.y,e.position.x=e.absolute.x*e.scale.x+e.offset.x,e.position.y=e.absolute.y*e.scale.y+e.offset.y};var e=function(e,t,n){var o,i,r=t.getBoundingClientRect(),s=document.documentElement||document.body.parentNode||document.body,a=void 0!==window.pageXOffset?window.pageXOffset:s.scrollLeft,l=void 0!==window.pageYOffset?window.pageYOffset:s.scrollTop,c=e.changedTouches;return c?(o=c[0].pageX-r.left-a,i=c[0].pageY-r.top-l):(o=e.pageX-r.left-a,i=e.pageY-r.top-l),{x:o/(t.clientWidth/(t.width||t.clientWidth)*n),y:i/(t.clientHeight/(t.height||t.clientHeight)*n)}}}()},{"../core/Common":14}],20:[function(e,t,n){var o={};t.exports=o;var i=e("./Common");!function(){o._registry={},o.register=function(e){if(o.isPlugin(e)||i.warn("Plugin.register:",o.toString(e),"does not implement all required fields."),e.name in o._registry){var t=o._registry[e.name],n=o.versionParse(e.version).number,r=o.versionParse(t.version).number;
+}},o.setMass=function(e,t){var n=e.inertia/(e.mass/6);e.inertia=n*(t/6),e.inverseInertia=1/e.inertia,e.mass=t,e.inverseMass=1/e.mass,e.density=e.mass/e.area},o.setDensity=function(e,t){o.setMass(e,t*e.area),e.density=t},o.setInertia=function(e,t){e.inertia=t,e.inverseInertia=1/e.inertia},o.setVertices=function(e,t){t[0].body===e?e.vertices=t:e.vertices=i.create(t,e),e.axes=c.fromVertices(e.vertices),e.area=i.area(e.vertices),o.setMass(e,e.density*e.area);var n=i.centre(e.vertices);i.translate(e.vertices,n,-1),o.setInertia(e,o._inertiaScale*i.inertia(e.vertices,e.mass)),i.translate(e.vertices,e.position),l.update(e.bounds,e.vertices,e.velocity)},o.setParts=function(e,t,n){var r;for(t=t.slice(0),e.parts.length=0,e.parts.push(e),e.parent=e,r=0;r<t.length;r++){var s=t[r];s!==e&&(s.parent=e,e.parts.push(s))}if(1!==e.parts.length){if(n="undefined"==typeof n||n){var a=[];for(r=0;r<t.length;r++)a=a.concat(t[r].vertices);i.clockwiseSort(a);var l=i.hull(a),c=i.centre(l);o.setVertices(e,l),i.translate(e.vertices,c);
+}var d=o._totalProperties(e);e.area=d.area,e.parent=e,e.position.x=d.centre.x,e.position.y=d.centre.y,e.positionPrev.x=d.centre.x,e.positionPrev.y=d.centre.y,o.setMass(e,d.mass),o.setInertia(e,d.inertia),o.setPosition(e,d.centre)}},o.setPosition=function(e,t){var n=r.sub(t,e.position);e.positionPrev.x+=n.x,e.positionPrev.y+=n.y;for(var o=0;o<e.parts.length;o++){var s=e.parts[o];s.position.x+=n.x,s.position.y+=n.y,i.translate(s.vertices,n),l.update(s.bounds,s.vertices,e.velocity)}},o.setAngle=function(e,t){var n=t-e.angle;e.anglePrev+=n;for(var o=0;o<e.parts.length;o++){var s=e.parts[o];s.angle+=n,i.rotate(s.vertices,n,e.position),c.rotate(s.axes,n),l.update(s.bounds,s.vertices,e.velocity),o>0&&r.rotateAbout(s.position,n,e.position,s.position)}},o.setVelocity=function(e,t){e.positionPrev.x=e.position.x-t.x,e.positionPrev.y=e.position.y-t.y,e.velocity.x=t.x,e.velocity.y=t.y,e.speed=r.magnitude(e.velocity)},o.setAngularVelocity=function(e,t){e.anglePrev=e.angle-t,e.angularVelocity=t,e.angularSpeed=Math.abs(e.angularVelocity);
+},o.translate=function(e,t){o.setPosition(e,r.add(e.position,t))},o.rotate=function(e,t,n){if(n){var i=Math.cos(t),r=Math.sin(t),s=e.position.x-n.x,a=e.position.y-n.y;o.setPosition(e,{x:n.x+(s*i-a*r),y:n.y+(s*r+a*i)}),o.setAngle(e,e.angle+t)}else o.setAngle(e,e.angle+t)},o.scale=function(e,t,n,r){var s=0,a=0;r=r||e.position;for(var d=0;d<e.parts.length;d++){var u=e.parts[d];i.scale(u.vertices,t,n,r),u.axes=c.fromVertices(u.vertices),u.area=i.area(u.vertices),o.setMass(u,e.density*u.area),i.translate(u.vertices,{x:-u.position.x,y:-u.position.y}),o.setInertia(u,o._inertiaScale*i.inertia(u.vertices,u.mass)),i.translate(u.vertices,{x:u.position.x,y:u.position.y}),d>0&&(s+=u.area,a+=u.inertia),u.position.x=r.x+(u.position.x-r.x)*t,u.position.y=r.y+(u.position.y-r.y)*n,l.update(u.bounds,u.vertices,e.velocity)}e.parts.length>1&&(e.area=s,e.isStatic||(o.setMass(e,e.density*s),o.setInertia(e,a))),e.circleRadius&&(t===n?e.circleRadius*=t:e.circleRadius=null)},o.update=function(e,t,n,o){var s=Math.pow(t*n*e.timeScale,2),a=1-e.frictionAir*n*e.timeScale,d=e.position.x-e.positionPrev.x,u=e.position.y-e.positionPrev.y;
+e.velocity.x=d*a*o+e.force.x/e.mass*s,e.velocity.y=u*a*o+e.force.y/e.mass*s,e.positionPrev.x=e.position.x,e.positionPrev.y=e.position.y,e.position.x+=e.velocity.x,e.position.y+=e.velocity.y,e.angularVelocity=(e.angle-e.anglePrev)*a*o+e.torque/e.inertia*s,e.anglePrev=e.angle,e.angle+=e.angularVelocity,e.speed=r.magnitude(e.velocity),e.angularSpeed=Math.abs(e.angularVelocity);for(var p=0;p<e.parts.length;p++){var f=e.parts[p];i.translate(f.vertices,e.velocity),p>0&&(f.position.x+=e.velocity.x,f.position.y+=e.velocity.y),0!==e.angularVelocity&&(i.rotate(f.vertices,e.angularVelocity,e.position),c.rotate(f.axes,e.angularVelocity),p>0&&r.rotateAbout(f.position,e.angularVelocity,e.position,f.position)),l.update(f.bounds,f.vertices,e.velocity)}},o.applyForce=function(e,t,n){e.force.x+=n.x,e.force.y+=n.y;var o={x:t.x-e.position.x,y:t.y-e.position.y};e.torque+=o.x*n.y-o.y*n.x},o._totalProperties=function(e){for(var t={mass:0,area:0,inertia:0,centre:{x:0,y:0}},n=1===e.parts.length?0:1;n<e.parts.length;n++){
+var o=e.parts[n],i=o.mass!==1/0?o.mass:1;t.mass+=i,t.area+=o.area,t.inertia+=o.inertia,t.centre=r.add(t.centre,r.mult(o.position,i))}return t.centre=r.div(t.centre,t.mass),t}}()},{"../core/Common":14,"../core/Sleeping":22,"../geometry/Axes":25,"../geometry/Bounds":26,"../geometry/Vector":28,"../geometry/Vertices":29,"../render/Render":31}],2:[function(e,t,n){var o={};t.exports=o;var i=e("../core/Events"),r=e("../core/Common"),s=e("./Body");!function(){o.create=function(e){return r.extend({id:r.nextId(),type:"composite",parent:null,isModified:!1,bodies:[],constraints:[],composites:[],label:"Composite",plugin:{}},e)},o.setModified=function(e,t,n,i){if(e.isModified=t,n&&e.parent&&o.setModified(e.parent,t,n,i),i)for(var r=0;r<e.composites.length;r++){var s=e.composites[r];o.setModified(s,t,n,i)}},o.add=function(e,t){var n=[].concat(t);i.trigger(e,"beforeAdd",{object:t});for(var s=0;s<n.length;s++){var a=n[s];switch(a.type){case"body":if(a.parent!==a){r.warn("Composite.add: skipped adding a compound body part (you must add its parent instead)");
+break}o.addBody(e,a);break;case"constraint":o.addConstraint(e,a);break;case"composite":o.addComposite(e,a);break;case"mouseConstraint":o.addConstraint(e,a.constraint)}}return i.trigger(e,"afterAdd",{object:t}),e},o.remove=function(e,t,n){var r=[].concat(t);i.trigger(e,"beforeRemove",{object:t});for(var s=0;s<r.length;s++){var a=r[s];switch(a.type){case"body":o.removeBody(e,a,n);break;case"constraint":o.removeConstraint(e,a,n);break;case"composite":o.removeComposite(e,a,n);break;case"mouseConstraint":o.removeConstraint(e,a.constraint)}}return i.trigger(e,"afterRemove",{object:t}),e},o.addComposite=function(e,t){return e.composites.push(t),t.parent=e,o.setModified(e,!0,!0,!1),e},o.removeComposite=function(e,t,n){var i=r.indexOf(e.composites,t);if(i!==-1&&(o.removeCompositeAt(e,i),o.setModified(e,!0,!0,!1)),n)for(var s=0;s<e.composites.length;s++)o.removeComposite(e.composites[s],t,!0);return e},o.removeCompositeAt=function(e,t){return e.composites.splice(t,1),o.setModified(e,!0,!0,!1),e},
+o.addBody=function(e,t){return e.bodies.push(t),o.setModified(e,!0,!0,!1),e},o.removeBody=function(e,t,n){var i=r.indexOf(e.bodies,t);if(i!==-1&&(o.removeBodyAt(e,i),o.setModified(e,!0,!0,!1)),n)for(var s=0;s<e.composites.length;s++)o.removeBody(e.composites[s],t,!0);return e},o.removeBodyAt=function(e,t){return e.bodies.splice(t,1),o.setModified(e,!0,!0,!1),e},o.addConstraint=function(e,t){return e.constraints.push(t),o.setModified(e,!0,!0,!1),e},o.removeConstraint=function(e,t,n){var i=r.indexOf(e.constraints,t);if(i!==-1&&o.removeConstraintAt(e,i),n)for(var s=0;s<e.composites.length;s++)o.removeConstraint(e.composites[s],t,!0);return e},o.removeConstraintAt=function(e,t){return e.constraints.splice(t,1),o.setModified(e,!0,!0,!1),e},o.clear=function(e,t,n){if(n)for(var i=0;i<e.composites.length;i++)o.clear(e.composites[i],t,!0);return t?e.bodies=e.bodies.filter(function(e){return e.isStatic}):e.bodies.length=0,e.constraints.length=0,e.composites.length=0,o.setModified(e,!0,!0,!1),e},o.allBodies=function(e){
+for(var t=[].concat(e.bodies),n=0;n<e.composites.length;n++)t=t.concat(o.allBodies(e.composites[n]));return t},o.allConstraints=function(e){for(var t=[].concat(e.constraints),n=0;n<e.composites.length;n++)t=t.concat(o.allConstraints(e.composites[n]));return t},o.allComposites=function(e){for(var t=[].concat(e.composites),n=0;n<e.composites.length;n++)t=t.concat(o.allComposites(e.composites[n]));return t},o.get=function(e,t,n){var i,r;switch(n){case"body":i=o.allBodies(e);break;case"constraint":i=o.allConstraints(e);break;case"composite":i=o.allComposites(e).concat(e)}return i?(r=i.filter(function(e){return e.id.toString()===t.toString()}),0===r.length?null:r[0]):null},o.move=function(e,t,n){return o.remove(e,t),o.add(n,t),e},o.rebase=function(e){for(var t=o.allBodies(e).concat(o.allConstraints(e)).concat(o.allComposites(e)),n=0;n<t.length;n++)t[n].id=r.nextId();return o.setModified(e,!0,!0,!1),e},o.translate=function(e,t,n){for(var i=n?o.allBodies(e):e.bodies,r=0;r<i.length;r++)s.translate(i[r],t);
+return o.setModified(e,!0,!0,!1),e},o.rotate=function(e,t,n,i){for(var r=Math.cos(t),a=Math.sin(t),l=i?o.allBodies(e):e.bodies,c=0;c<l.length;c++){var d=l[c],u=d.position.x-n.x,p=d.position.y-n.y;s.setPosition(d,{x:n.x+(u*r-p*a),y:n.y+(u*a+p*r)}),s.rotate(d,t)}return o.setModified(e,!0,!0,!1),e},o.scale=function(e,t,n,i,r){for(var a=r?o.allBodies(e):e.bodies,l=0;l<a.length;l++){var c=a[l],d=c.position.x-i.x,u=c.position.y-i.y;s.setPosition(c,{x:i.x+d*t,y:i.y+u*n}),s.scale(c,t,n)}return o.setModified(e,!0,!0,!1),e},o.bounds=function(e){for(var t=Matter.Composite.allBodies(e),n=[],o=0;o<t.length;o+=1){var i=t[o];n.push(i.bounds.min,i.bounds.max)}return Matter.Bounds.create(n)}}()},{"../core/Common":14,"../core/Events":16,"./Body":1}],3:[function(e,t,n){var o={};t.exports=o;var i=e("./Composite"),r=(e("../constraint/Constraint"),e("../core/Common"));!function(){o.create=function(e){var t=i.create(),n={label:"World",gravity:{x:0,y:1,scale:.001},bounds:{min:{x:-(1/0),y:-(1/0)},max:{x:1/0,y:1/0
+}}};return r.extend(t,n,e)}}()},{"../constraint/Constraint":12,"../core/Common":14,"./Composite":2}],4:[function(e,t,n){var o={};t.exports=o,function(){o.create=function(e){return{id:o.id(e),vertex:e,normalImpulse:0,tangentImpulse:0}},o.id=function(e){return e.body.id+"_"+e.index}}()},{}],5:[function(e,t,n){var o={};t.exports=o;var i=e("./SAT"),r=e("./Pair"),s=e("../geometry/Bounds");!function(){o.collisions=function(e,t){for(var n=[],a=t.pairs.table,l=0;l<e.length;l++){var c=e[l][0],d=e[l][1];if((!c.isStatic&&!c.isSleeping||!d.isStatic&&!d.isSleeping)&&o.canCollide(c.collisionFilter,d.collisionFilter)&&s.overlaps(c.bounds,d.bounds))for(var u=c.parts.length>1?1:0;u<c.parts.length;u++)for(var p=c.parts[u],f=d.parts.length>1?1:0;f<d.parts.length;f++){var m=d.parts[f];if(p===c&&m===d||s.overlaps(p.bounds,m.bounds)){var v,y=r.id(p,m),g=a[y];v=g&&g.isActive?g.collision:null;var x=i.collides(p,m,v);x.collided&&n.push(x)}}}return n},o.canCollide=function(e,t){return e.group===t.group&&0!==e.group?e.group>0:0!==(e.mask&t.category)&&0!==(t.mask&e.category);
+}}()},{"../geometry/Bounds":26,"./Pair":7,"./SAT":11}],6:[function(e,t,n){var o={};t.exports=o;var i=e("./Pair"),r=e("./Detector"),s=e("../core/Common");!function(){o.create=function(e){var t={controller:o,detector:r.collisions,buckets:{},pairs:{},pairsList:[],bucketWidth:48,bucketHeight:48};return s.extend(t,e)},o.update=function(e,t,n,i){var r,s,a,l,c,d=n.world,u=e.buckets,p=!1;for(r=0;r<t.length;r++){var f=t[r];if((!f.isSleeping||i)&&!(f.bounds.max.x<d.bounds.min.x||f.bounds.min.x>d.bounds.max.x||f.bounds.max.y<d.bounds.min.y||f.bounds.min.y>d.bounds.max.y)){var m=o._getRegion(e,f);if(!f.region||m.id!==f.region.id||i){f.region&&!i||(f.region=m);var v=o._regionUnion(m,f.region);for(s=v.startCol;s<=v.endCol;s++)for(a=v.startRow;a<=v.endRow;a++){c=o._getBucketId(s,a),l=u[c];var y=s>=m.startCol&&s<=m.endCol&&a>=m.startRow&&a<=m.endRow,g=s>=f.region.startCol&&s<=f.region.endCol&&a>=f.region.startRow&&a<=f.region.endRow;!y&&g&&g&&l&&o._bucketRemoveBody(e,l,f),(f.region===m||y&&!g||i)&&(l||(l=o._createBucket(u,c)),
+o._bucketAddBody(e,l,f))}f.region=m,p=!0}}}p&&(e.pairsList=o._createActivePairsList(e))},o.clear=function(e){e.buckets={},e.pairs={},e.pairsList=[]},o._regionUnion=function(e,t){var n=Math.min(e.startCol,t.startCol),i=Math.max(e.endCol,t.endCol),r=Math.min(e.startRow,t.startRow),s=Math.max(e.endRow,t.endRow);return o._createRegion(n,i,r,s)},o._getRegion=function(e,t){var n=t.bounds,i=Math.floor(n.min.x/e.bucketWidth),r=Math.floor(n.max.x/e.bucketWidth),s=Math.floor(n.min.y/e.bucketHeight),a=Math.floor(n.max.y/e.bucketHeight);return o._createRegion(i,r,s,a)},o._createRegion=function(e,t,n,o){return{id:e+","+t+","+n+","+o,startCol:e,endCol:t,startRow:n,endRow:o}},o._getBucketId=function(e,t){return"C"+e+"R"+t},o._createBucket=function(e,t){var n=e[t]=[];return n},o._bucketAddBody=function(e,t,n){for(var o=0;o<t.length;o++){var r=t[o];if(!(n.id===r.id||n.isStatic&&r.isStatic)){var s=i.id(n,r),a=e.pairs[s];a?a[2]+=1:e.pairs[s]=[n,r,1]}}t.push(n)},o._bucketRemoveBody=function(e,t,n){t.splice(s.indexOf(t,n),1);
+for(var o=0;o<t.length;o++){var r=t[o],a=i.id(n,r),l=e.pairs[a];l&&(l[2]-=1)}},o._createActivePairsList=function(e){var t,n,o=[];t=s.keys(e.pairs);for(var i=0;i<t.length;i++)n=e.pairs[t[i]],n[2]>0?o.push(n):delete e.pairs[t[i]];return o}}()},{"../core/Common":14,"./Detector":5,"./Pair":7}],7:[function(e,t,n){var o={};t.exports=o;var i=e("./Contact");!function(){o.create=function(e,t){var n=e.bodyA,i=e.bodyB,r=e.parentA,s=e.parentB,a={id:o.id(n,i),bodyA:n,bodyB:i,contacts:{},activeContacts:[],separation:0,isActive:!0,isSensor:n.isSensor||i.isSensor,timeCreated:t,timeUpdated:t,inverseMass:r.inverseMass+s.inverseMass,friction:Math.min(r.friction,s.friction),frictionStatic:Math.max(r.frictionStatic,s.frictionStatic),restitution:Math.max(r.restitution,s.restitution),slop:Math.max(r.slop,s.slop)};return o.update(a,e,t),a},o.update=function(e,t,n){var r=e.contacts,s=t.supports,a=e.activeContacts,l=t.parentA,c=t.parentB;if(e.collision=t,e.inverseMass=l.inverseMass+c.inverseMass,e.friction=Math.min(l.friction,c.friction),
+e.frictionStatic=Math.max(l.frictionStatic,c.frictionStatic),e.restitution=Math.max(l.restitution,c.restitution),e.slop=Math.max(l.slop,c.slop),a.length=0,t.collided){for(var d=0;d<s.length;d++){var u=s[d],p=i.id(u),f=r[p];f?a.push(f):a.push(r[p]=i.create(u))}e.separation=t.depth,o.setActive(e,!0,n)}else e.isActive===!0&&o.setActive(e,!1,n)},o.setActive=function(e,t,n){t?(e.isActive=!0,e.timeUpdated=n):(e.isActive=!1,e.activeContacts.length=0)},o.id=function(e,t){return e.id<t.id?"A"+e.id+"B"+t.id:"A"+t.id+"B"+e.id}}()},{"./Contact":4}],8:[function(e,t,n){var o={};t.exports=o;var i=e("./Pair"),r=e("../core/Common");!function(){o._pairMaxIdleLife=1e3,o.create=function(e){return r.extend({table:{},list:[],collisionStart:[],collisionActive:[],collisionEnd:[]},e)},o.update=function(e,t,n){var o,s,a,l,c=e.list,d=e.table,u=e.collisionStart,p=e.collisionEnd,f=e.collisionActive,m=[];for(u.length=0,p.length=0,f.length=0,l=0;l<t.length;l++)o=t[l],o.collided&&(s=i.id(o.bodyA,o.bodyB),m.push(s),a=d[s],
+a?(a.isActive?f.push(a):u.push(a),i.update(a,o,n)):(a=i.create(o,n),d[s]=a,u.push(a),c.push(a)));for(l=0;l<c.length;l++)a=c[l],a.isActive&&r.indexOf(m,a.id)===-1&&(i.setActive(a,!1,n),p.push(a))},o.removeOld=function(e,t){var n,i,r,s,a=e.list,l=e.table,c=[];for(s=0;s<a.length;s++)n=a[s],i=n.collision,i.bodyA.isSleeping||i.bodyB.isSleeping?n.timeUpdated=t:t-n.timeUpdated>o._pairMaxIdleLife&&c.push(s);for(s=0;s<c.length;s++)r=c[s]-s,n=a[r],delete l[n.id],a.splice(r,1)},o.clear=function(e){return e.table={},e.list.length=0,e.collisionStart.length=0,e.collisionActive.length=0,e.collisionEnd.length=0,e}}()},{"../core/Common":14,"./Pair":7}],9:[function(e,t,n){var o={};t.exports=o;var i=e("../geometry/Vector"),r=e("./SAT"),s=e("../geometry/Bounds"),a=e("../factory/Bodies"),l=e("../geometry/Vertices");!function(){o.collides=function(e,t){for(var n=[],o=0;o<t.length;o++){var i=t[o];if(s.overlaps(i.bounds,e.bounds))for(var a=1===i.parts.length?0:1;a<i.parts.length;a++){var l=i.parts[a];if(s.overlaps(l.bounds,e.bounds)){
+var c=r.collides(l,e);if(c.collided){n.push(c);break}}}}return n},o.ray=function(e,t,n,r){r=r||1e-100;for(var s=i.angle(t,n),l=i.magnitude(i.sub(t,n)),c=.5*(n.x+t.x),d=.5*(n.y+t.y),u=a.rectangle(c,d,l,r,{angle:s}),p=o.collides(u,e),f=0;f<p.length;f+=1){var m=p[f];m.body=m.bodyB=m.bodyA}return p},o.region=function(e,t,n){for(var o=[],i=0;i<e.length;i++){var r=e[i],a=s.overlaps(r.bounds,t);(a&&!n||!a&&n)&&o.push(r)}return o},o.point=function(e,t){for(var n=[],o=0;o<e.length;o++){var i=e[o];if(s.contains(i.bounds,t))for(var r=1===i.parts.length?0:1;r<i.parts.length;r++){var a=i.parts[r];if(s.contains(a.bounds,t)&&l.contains(a.vertices,t)){n.push(i);break}}}return n}}()},{"../factory/Bodies":23,"../geometry/Bounds":26,"../geometry/Vector":28,"../geometry/Vertices":29,"./SAT":11}],10:[function(e,t,n){var o={};t.exports=o;var i=e("../geometry/Vertices"),r=e("../geometry/Vector"),s=e("../core/Common"),a=e("../geometry/Bounds");!function(){o._restingThresh=4,o._restingThreshTangent=6,o._positionDampen=.9,
+o._positionWarming=.8,o._frictionNormalMultiplier=5,o.preSolvePosition=function(e){var t,n,o;for(t=0;t<e.length;t++)n=e[t],n.isActive&&(o=n.activeContacts.length,n.collision.parentA.totalContacts+=o,n.collision.parentB.totalContacts+=o)},o.solvePosition=function(e,t){var n,i,s,a,l,c,d,u,p,f=r._temp[0],m=r._temp[1],v=r._temp[2],y=r._temp[3];for(n=0;n<e.length;n++)i=e[n],i.isActive&&!i.isSensor&&(s=i.collision,a=s.parentA,l=s.parentB,c=s.normal,d=r.sub(r.add(l.positionImpulse,l.position,f),r.add(a.positionImpulse,r.sub(l.position,s.penetration,m),v),y),i.separation=r.dot(c,d));for(n=0;n<e.length;n++)i=e[n],i.isActive&&!i.isSensor&&(s=i.collision,a=s.parentA,l=s.parentB,c=s.normal,p=(i.separation-i.slop)*t,(a.isStatic||l.isStatic)&&(p*=2),a.isStatic||a.isSleeping||(u=o._positionDampen/a.totalContacts,a.positionImpulse.x+=c.x*p*u,a.positionImpulse.y+=c.y*p*u),l.isStatic||l.isSleeping||(u=o._positionDampen/l.totalContacts,l.positionImpulse.x-=c.x*p*u,l.positionImpulse.y-=c.y*p*u))},o.postSolvePosition=function(e){
+for(var t=0;t<e.length;t++){var n=e[t];if(n.totalContacts=0,0!==n.positionImpulse.x||0!==n.positionImpulse.y){for(var s=0;s<n.parts.length;s++){var l=n.parts[s];i.translate(l.vertices,n.positionImpulse),a.update(l.bounds,l.vertices,n.velocity),l.position.x+=n.positionImpulse.x,l.position.y+=n.positionImpulse.y}n.positionPrev.x+=n.positionImpulse.x,n.positionPrev.y+=n.positionImpulse.y,r.dot(n.positionImpulse,n.velocity)<0?(n.positionImpulse.x=0,n.positionImpulse.y=0):(n.positionImpulse.x*=o._positionWarming,n.positionImpulse.y*=o._positionWarming)}}},o.preSolveVelocity=function(e){var t,n,o,i,s,a,l,c,d,u,p,f,m,v,y=r._temp[0],g=r._temp[1];for(t=0;t<e.length;t++)if(o=e[t],o.isActive&&!o.isSensor)for(i=o.activeContacts,s=o.collision,a=s.parentA,l=s.parentB,c=s.normal,d=s.tangent,n=0;n<i.length;n++)u=i[n],p=u.vertex,f=u.normalImpulse,m=u.tangentImpulse,0===f&&0===m||(y.x=c.x*f+d.x*m,y.y=c.y*f+d.y*m,a.isStatic||a.isSleeping||(v=r.sub(p,a.position,g),a.positionPrev.x+=y.x*a.inverseMass,a.positionPrev.y+=y.y*a.inverseMass,
+a.anglePrev+=r.cross(v,y)*a.inverseInertia),l.isStatic||l.isSleeping||(v=r.sub(p,l.position,g),l.positionPrev.x-=y.x*l.inverseMass,l.positionPrev.y-=y.y*l.inverseMass,l.anglePrev-=r.cross(v,y)*l.inverseInertia))},o.solveVelocity=function(e,t){for(var n=t*t,i=r._temp[0],a=r._temp[1],l=r._temp[2],c=r._temp[3],d=r._temp[4],u=r._temp[5],p=0;p<e.length;p++){var f=e[p];if(f.isActive&&!f.isSensor){var m=f.collision,v=m.parentA,y=m.parentB,g=m.normal,x=m.tangent,h=f.activeContacts,b=1/h.length;v.velocity.x=v.position.x-v.positionPrev.x,v.velocity.y=v.position.y-v.positionPrev.y,y.velocity.x=y.position.x-y.positionPrev.x,y.velocity.y=y.position.y-y.positionPrev.y,v.angularVelocity=v.angle-v.anglePrev,y.angularVelocity=y.angle-y.anglePrev;for(var w=0;w<h.length;w++){var S=h[w],C=S.vertex,A=r.sub(C,v.position,a),P=r.sub(C,y.position,l),B=r.add(v.velocity,r.mult(r.perp(A),v.angularVelocity),c),M=r.add(y.velocity,r.mult(r.perp(P),y.angularVelocity),d),k=r.sub(B,M,u),I=r.dot(g,k),_=r.dot(x,k),T=Math.abs(_),R=s.sign(_),V=(1+f.restitution)*I,E=s.clamp(f.separation+I,0,1)*o._frictionNormalMultiplier,L=_,F=1/0;
+T>f.friction*f.frictionStatic*E*n&&(F=T,L=s.clamp(f.friction*R*n,-F,F));var O=r.cross(A,g),q=r.cross(P,g),W=b/(v.inverseMass+y.inverseMass+v.inverseInertia*O*O+y.inverseInertia*q*q);if(V*=W,L*=W,I<0&&I*I>o._restingThresh*n)S.normalImpulse=0;else{var D=S.normalImpulse;S.normalImpulse=Math.min(S.normalImpulse+V,0),V=S.normalImpulse-D}if(_*_>o._restingThreshTangent*n)S.tangentImpulse=0;else{var N=S.tangentImpulse;S.tangentImpulse=s.clamp(S.tangentImpulse+L,-F,F),L=S.tangentImpulse-N}i.x=g.x*V+x.x*L,i.y=g.y*V+x.y*L,v.isStatic||v.isSleeping||(v.positionPrev.x+=i.x*v.inverseMass,v.positionPrev.y+=i.y*v.inverseMass,v.anglePrev+=r.cross(A,i)*v.inverseInertia),y.isStatic||y.isSleeping||(y.positionPrev.x-=i.x*y.inverseMass,y.positionPrev.y-=i.y*y.inverseMass,y.anglePrev-=r.cross(P,i)*y.inverseInertia)}}}}}()},{"../core/Common":14,"../geometry/Bounds":26,"../geometry/Vector":28,"../geometry/Vertices":29}],11:[function(e,t,n){var o={};t.exports=o;var i=e("../geometry/Vertices"),r=e("../geometry/Vector");
+!function(){o.collides=function(e,t,n){var s,a,l,c,d=!1;if(n){var u=e.parent,p=t.parent,f=u.speed*u.speed+u.angularSpeed*u.angularSpeed+p.speed*p.speed+p.angularSpeed*p.angularSpeed;d=n&&n.collided&&f<.2,c=n}else c={collided:!1,bodyA:e,bodyB:t};if(n&&d){var m=c.axisBody,v=m===e?t:e,y=[m.axes[n.axisNumber]];if(l=o._overlapAxes(m.vertices,v.vertices,y),c.reused=!0,l.overlap<=0)return c.collided=!1,c}else{if(s=o._overlapAxes(e.vertices,t.vertices,e.axes),s.overlap<=0)return c.collided=!1,c;if(a=o._overlapAxes(t.vertices,e.vertices,t.axes),a.overlap<=0)return c.collided=!1,c;s.overlap<a.overlap?(l=s,c.axisBody=e):(l=a,c.axisBody=t),c.axisNumber=l.axisNumber}c.bodyA=e.id<t.id?e:t,c.bodyB=e.id<t.id?t:e,c.collided=!0,c.depth=l.overlap,c.parentA=c.bodyA.parent,c.parentB=c.bodyB.parent,e=c.bodyA,t=c.bodyB,r.dot(l.axis,r.sub(t.position,e.position))<0?c.normal={x:l.axis.x,y:l.axis.y}:c.normal={x:-l.axis.x,y:-l.axis.y},c.tangent=r.perp(c.normal),c.penetration=c.penetration||{},c.penetration.x=c.normal.x*c.depth,
+c.penetration.y=c.normal.y*c.depth;var g=o._findSupports(e,t,c.normal),x=[];if(i.contains(e.vertices,g[0])&&x.push(g[0]),i.contains(e.vertices,g[1])&&x.push(g[1]),x.length<2){var h=o._findSupports(t,e,r.neg(c.normal));i.contains(t.vertices,h[0])&&x.push(h[0]),x.length<2&&i.contains(t.vertices,h[1])&&x.push(h[1])}return x.length<1&&(x=[g[0]]),c.supports=x,c},o._overlapAxes=function(e,t,n){for(var i,s,a=r._temp[0],l=r._temp[1],c={overlap:Number.MAX_VALUE},d=0;d<n.length;d++){if(s=n[d],o._projectToAxis(a,e,s),o._projectToAxis(l,t,s),i=Math.min(a.max-l.min,l.max-a.min),i<=0)return c.overlap=i,c;i<c.overlap&&(c.overlap=i,c.axis=s,c.axisNumber=d)}return c},o._projectToAxis=function(e,t,n){for(var o=r.dot(t[0],n),i=o,s=1;s<t.length;s+=1){var a=r.dot(t[s],n);a>i?i=a:a<o&&(o=a)}e.min=o,e.max=i},o._findSupports=function(e,t,n){for(var o,i,s,a,l=Number.MAX_VALUE,c=r._temp[0],d=t.vertices,u=e.position,p=0;p<d.length;p++)i=d[p],c.x=i.x-u.x,c.y=i.y-u.y,o=-r.dot(n,c),o<l&&(l=o,s=i);var f=s.index-1>=0?s.index-1:d.length-1;
+i=d[f],c.x=i.x-u.x,c.y=i.y-u.y,l=-r.dot(n,c),a=i;var m=(s.index+1)%d.length;return i=d[m],c.x=i.x-u.x,c.y=i.y-u.y,o=-r.dot(n,c),o<l&&(a=i),[s,a]}}()},{"../geometry/Vector":28,"../geometry/Vertices":29}],12:[function(e,t,n){var o={};t.exports=o;var i=e("../geometry/Vertices"),r=e("../geometry/Vector"),s=e("../core/Sleeping"),a=e("../geometry/Bounds"),l=e("../geometry/Axes"),c=e("../core/Common");!function(){o._warming=.4,o._torqueDampen=1,o._minLength=1e-6,o.create=function(e){var t=e;t.bodyA&&!t.pointA&&(t.pointA={x:0,y:0}),t.bodyB&&!t.pointB&&(t.pointB={x:0,y:0});var n=t.bodyA?r.add(t.bodyA.position,t.pointA):t.pointA,o=t.bodyB?r.add(t.bodyB.position,t.pointB):t.pointB,i=r.magnitude(r.sub(n,o));t.length="undefined"!=typeof t.length?t.length:i,t.id=t.id||c.nextId(),t.label=t.label||"Constraint",t.type="constraint",t.stiffness=t.stiffness||(t.length>0?1:.7),t.damping=t.damping||0,t.angularStiffness=t.angularStiffness||0,t.angleA=t.bodyA?t.bodyA.angle:t.angleA,t.angleB=t.bodyB?t.bodyB.angle:t.angleB,
+t.plugin={};var s={visible:!0,lineWidth:2,strokeStyle:"#ffffff",type:"line",anchors:!0};return 0===t.length&&t.stiffness>.1?(s.type="pin",s.anchors=!1):t.stiffness<.9&&(s.type="spring"),t.render=c.extend(s,t.render),t},o.preSolveAll=function(e){for(var t=0;t<e.length;t+=1){var n=e[t],o=n.constraintImpulse;n.isStatic||0===o.x&&0===o.y&&0===o.angle||(n.position.x+=o.x,n.position.y+=o.y,n.angle+=o.angle)}},o.solveAll=function(e,t){for(var n=0;n<e.length;n+=1){var i=e[n],r=!i.bodyA||i.bodyA&&i.bodyA.isStatic,s=!i.bodyB||i.bodyB&&i.bodyB.isStatic;(r||s)&&o.solve(e[n],t)}for(n=0;n<e.length;n+=1)i=e[n],r=!i.bodyA||i.bodyA&&i.bodyA.isStatic,s=!i.bodyB||i.bodyB&&i.bodyB.isStatic,r||s||o.solve(e[n],t)},o.solve=function(e,t){var n=e.bodyA,i=e.bodyB,s=e.pointA,a=e.pointB;if(n||i){n&&!n.isStatic&&(r.rotate(s,n.angle-e.angleA,s),e.angleA=n.angle),i&&!i.isStatic&&(r.rotate(a,i.angle-e.angleB,a),e.angleB=i.angle);var l=s,c=a;if(n&&(l=r.add(n.position,s)),i&&(c=r.add(i.position,a)),l&&c){var d=r.sub(l,c),u=r.magnitude(d);
+u<o._minLength&&(u=o._minLength);var p,f,m,v,y,g=(u-e.length)/u,x=e.stiffness<1?e.stiffness*t:e.stiffness,h=r.mult(d,g*x),b=(n?n.inverseMass:0)+(i?i.inverseMass:0),w=(n?n.inverseInertia:0)+(i?i.inverseInertia:0),S=b+w;if(e.damping){var C=r.create();m=r.div(d,u),y=r.sub(i&&r.sub(i.position,i.positionPrev)||C,n&&r.sub(n.position,n.positionPrev)||C),v=r.dot(m,y)}n&&!n.isStatic&&(f=n.inverseMass/b,n.constraintImpulse.x-=h.x*f,n.constraintImpulse.y-=h.y*f,n.position.x-=h.x*f,n.position.y-=h.y*f,e.damping&&(n.positionPrev.x-=e.damping*m.x*v*f,n.positionPrev.y-=e.damping*m.y*v*f),p=r.cross(s,h)/S*o._torqueDampen*n.inverseInertia*(1-e.angularStiffness),n.constraintImpulse.angle-=p,n.angle-=p),i&&!i.isStatic&&(f=i.inverseMass/b,i.constraintImpulse.x+=h.x*f,i.constraintImpulse.y+=h.y*f,i.position.x+=h.x*f,i.position.y+=h.y*f,e.damping&&(i.positionPrev.x+=e.damping*m.x*v*f,i.positionPrev.y+=e.damping*m.y*v*f),p=r.cross(a,h)/S*o._torqueDampen*i.inverseInertia*(1-e.angularStiffness),i.constraintImpulse.angle+=p,
+i.angle+=p)}}},o.postSolveAll=function(e){for(var t=0;t<e.length;t++){var n=e[t],c=n.constraintImpulse;if(!(n.isStatic||0===c.x&&0===c.y&&0===c.angle)){s.set(n,!1);for(var d=0;d<n.parts.length;d++){var u=n.parts[d];i.translate(u.vertices,c),d>0&&(u.position.x+=c.x,u.position.y+=c.y),0!==c.angle&&(i.rotate(u.vertices,c.angle,n.position),l.rotate(u.axes,c.angle),d>0&&r.rotateAbout(u.position,c.angle,n.position,u.position)),a.update(u.bounds,u.vertices,n.velocity)}c.angle*=o._warming,c.x*=o._warming,c.y*=o._warming}}}}()},{"../core/Common":14,"../core/Sleeping":22,"../geometry/Axes":25,"../geometry/Bounds":26,"../geometry/Vector":28,"../geometry/Vertices":29}],13:[function(e,t,n){var o={};t.exports=o;var i=e("../geometry/Vertices"),r=e("../core/Sleeping"),s=e("../core/Mouse"),a=e("../core/Events"),l=e("../collision/Detector"),c=e("./Constraint"),d=e("../body/Composite"),u=e("../core/Common"),p=e("../geometry/Bounds");!function(){o.create=function(e,t){var n=(e?e.mouse:null)||(t?t.mouse:null);
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+o.pointA=n.position,o.bodyB=e.body=s,o.pointB={x:n.position.x-s.position.x,y:n.position.y-s.position.y},o.angleB=s.angle,r.set(s,!1),a.trigger(e,"startdrag",{mouse:n,body:s});break}}}else o.bodyB=e.body=null,o.pointB=null,s&&a.trigger(e,"enddrag",{mouse:n,body:s})},o._triggerEvents=function(e){var t=e.mouse,n=t.sourceEvents;n.mousemove&&a.trigger(e,"mousemove",{mouse:t}),n.mousedown&&a.trigger(e,"mousedown",{mouse:t}),n.mouseup&&a.trigger(e,"mouseup",{mouse:t}),s.clearSourceEvents(t)}}()},{"../body/Composite":2,"../collision/Detector":5,"../core/Common":14,"../core/Events":16,"../core/Mouse":19,"../core/Sleeping":22,"../geometry/Bounds":26,"../geometry/Vertices":29,"./Constraint":12}],14:[function(e,t,n){var o={};t.exports=o,function(){o._nextId=0,o._seed=0,o._nowStartTime=+new Date,o.extend=function(e,t){var n,i;"boolean"==typeof t?(n=2,i=t):(n=1,i=!0);for(var r=n;r<arguments.length;r++){var s=arguments[r];if(s)for(var a in s)i&&s[a]&&s[a].constructor===Object?e[a]&&e[a].constructor!==Object?e[a]=s[a]:(e[a]=e[a]||{},
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+},o.warn=function(){console&&o.logLevel>0&&o.logLevel<=3&&console.warn.apply(console,["matter-js:"].concat(Array.prototype.slice.call(arguments)))},o.nextId=function(){return o._nextId++},o.indexOf=function(e,t){if(e.indexOf)return e.indexOf(t);for(var n=0;n<e.length;n++)if(e[n]===t)return n;return-1},o.map=function(e,t){if(e.map)return e.map(t);for(var n=[],o=0;o<e.length;o+=1)n.push(t(e[o]));return n},o.topologicalSort=function(e){var t=[],n=[],i=[];for(var r in e)n[r]||i[r]||o._topologicalSort(r,n,i,e,t);return t},o._topologicalSort=function(e,t,n,i,r){var s=i[e]||[];n[e]=!0;for(var a=0;a<s.length;a+=1){var l=s[a];n[l]||t[l]||o._topologicalSort(l,t,n,i,r)}n[e]=!1,t[e]=!0,r.push(e)},o.chain=function(){for(var e=[],t=0;t<arguments.length;t+=1){var n=arguments[t];n._chained?e.push.apply(e,n._chained):e.push(n)}var o=function(){for(var t,n=new Array(arguments.length),o=0,i=arguments.length;o<i;o++)n[o]=arguments[o];for(o=0;o<e.length;o+=1){var r=e[o].apply(t,n);"undefined"!=typeof r&&(t=r);
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+o.render&&(o.render.engine=o),o.world=t.world||i.create(o.world),o.pairs=l.create(),o.broadphase=o.broadphase.controller.create(o.broadphase),o.metrics=o.metrics||{extended:!1},o},o.update=function(e,t,n){t=t||1e3/60,n=n||1;var i,a=e.world,c=e.timing,f=e.broadphase,m=[];c.timestamp+=t*c.timeScale;var v={timestamp:c.timestamp};d.trigger(e,"beforeUpdate",v);var y=u.allBodies(a),g=u.allConstraints(a);for(e.enableSleeping&&r.update(y,c.timeScale),o._bodiesApplyGravity(y,a.gravity),o._bodiesUpdate(y,t,c.timeScale,n,a.bounds),p.preSolveAll(y),i=0;i<e.constraintIterations;i++)p.solveAll(g,c.timeScale);p.postSolveAll(y),f.controller?(a.isModified&&f.controller.clear(f),f.controller.update(f,y,e,a.isModified),m=f.pairsList):m=y,a.isModified&&u.setModified(a,!1,!1,!0);var x=f.detector(m,e),h=e.pairs,b=c.timestamp;for(l.update(h,x,b),l.removeOld(h,b),e.enableSleeping&&r.afterCollisions(h.list,c.timeScale),h.collisionStart.length>0&&d.trigger(e,"collisionStart",{pairs:h.collisionStart}),s.preSolvePosition(h.list),
+i=0;i<e.positionIterations;i++)s.solvePosition(h.list,c.timeScale);for(s.postSolvePosition(y),p.preSolveAll(y),i=0;i<e.constraintIterations;i++)p.solveAll(g,c.timeScale);for(p.postSolveAll(y),s.preSolveVelocity(h.list),i=0;i<e.velocityIterations;i++)s.solveVelocity(h.list,c.timeScale);return h.collisionActive.length>0&&d.trigger(e,"collisionActive",{pairs:h.collisionActive}),h.collisionEnd.length>0&&d.trigger(e,"collisionEnd",{pairs:h.collisionEnd}),o._bodiesClearForces(y),d.trigger(e,"afterUpdate",v),e},o.merge=function(e,t){if(f.extend(e,t),t.world){e.world=t.world,o.clear(e);for(var n=u.allBodies(e.world),i=0;i<n.length;i++){var s=n[i];r.set(s,!1),s.id=f.nextId()}}},o.clear=function(e){var t=e.world;l.clear(e.pairs);var n=e.broadphase;if(n.controller){var o=u.allBodies(t);n.controller.clear(n),n.controller.update(n,o,e,!0)}},o._bodiesClearForces=function(e){for(var t=0;t<e.length;t++){var n=e[t];n.force.x=0,n.force.y=0,n.torque=0}},o._bodiesApplyGravity=function(e,t){var n="undefined"!=typeof t.scale?t.scale:.001;
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diff --git a/package.json b/package.json
index 08ac0eb..705c288 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "matter-js",
-  "version": "0.13.0",
+  "version": "0.14.0",
   "license": "MIT",
   "homepage": "http://brm.io/matter-js/",
   "author": "Liam Brummitt <liam@brm.io> (http://brm.io/)",