added Example.attractors

demo/index.html

@@ -61,6 +61,7 @@ <h1>Matter.js Demo</h1>
                     <option value="avalanche">Avalanche</option>
                     <option value="softBody">Basic Soft Bodies</option>
                     <option value="cloth">Cloth</option>
+                    <option value="attractors">Attractors (Plugin)</option>
                     <option value="events">Events</option>
                     <option value="collisionFiltering">Collision Filtering</option>
                     <option value="sensors">Sensors</option>

demo/js/Demo.js

@@ -56,12 +56,6 @@
         var demo = Demo.create();
         Matter.Demo._demo = demo;
 
-        Matter.use(
-            'matter-plugin-fake',
-            'matter-plugin-2',
-            window.MatterPlugin
-        );
-
         // get container element for the canvas
         demo.container = document.getElementById('canvas-container');
 

examples/attractors.js

@@ -0,0 +1,52 @@
+(function() {
+
+    var World = Matter.World,
+        Bodies = Matter.Bodies,
+        Body = Matter.Body,
+        Common = Matter.Common;
+
+    Example.attractors = function(demo) {
+        var engine = demo.engine,
+            world = engine.world;
+
+        Matter.use(
+            'matter-gravity', 
+            'matter-world-wrap'
+        );
+
+        world.bounds = {
+            min: { x: 0, y: 0 },
+            max: { x: 800, y: 600 }
+        };
+
+        world.bodies = [];
+        world.gravity.scale = 0;
+
+        var G = 0.001;
+
+        for (var i = 0; i < 200; i += 1) {
+            var body = Bodies.circle(
+                Common.random(10, 790), 
+                Common.random(10, 590),
+                Common.random(4, 10),
+                {
+                    mass: Common.random(10, 20),
+                    gravity: G,
+                    frictionAir: 0
+                }
+            );
+
+            Body.setVelocity(body, { 
+                x: Common.random(-2, 2), 
+                y: Common.random(-2, 2)
+            });
+
+            World.add(world, body);
+        }
+
+        var renderOptions = demo.render.options;
+        renderOptions.showAngleIndicator = false;
+        renderOptions.showPositions = true;
+    };
+
+})();