Added new Sleep component

v3/src/physics/matter-js/components/Sleep.js

@@ -0,0 +1,61 @@
+var MatterEvents = require('../lib/core/Events');
+var PhysicsEvent = require('../events/');
+
+var Sleep = {
+
+    setSleepThreshold: function (value)
+    {
+        if (value === undefined) { value = 60; }
+
+        this.body.sleepThreshold = value;
+
+        return this;
+    },
+
+    setSleepEvents: function (start, end)
+    {
+        this.setSleepStartEvent(start);
+        this.setSleepEndEvent(end);
+
+        return this;
+    },
+
+    setSleepStartEvent: function (value)
+    {
+        if (value)
+        {
+            var worldEvents = this.world.events;
+
+            MatterEvents.on(this.body, 'sleepStart', function (event) {
+                worldEvents.dispatch(new PhysicsEvent.SLEEP_START(event, this));
+            });
+        }
+        else
+        {
+            MatterEvents.off(this.body, 'sleepStart');
+        }
+
+        return this;
+    },
+
+    setSleepEndEvent: function (value)
+    {
+        if (value)
+        {
+            var worldEvents = this.world.events;
+
+            MatterEvents.on(this.body, 'sleepEnd', function (event) {
+                worldEvents.dispatch(new PhysicsEvent.SLEEP_END(event, this));
+            });
+        }
+        else
+        {
+            MatterEvents.off(this.body, 'sleepEnd');
+        }
+
+        return this;
+    }
+
+};
+
+module.exports = Sleep;

v3/src/physics/matter-js/components/index.js

@@ -9,6 +9,7 @@ module.exports = {
     Mass: require('./Mass'),
     Static: require('./Static'),
     Sensor: require('./Sensor'),
+    Sleep: require('./Sleep'),
     Transform: require('./Transform'),
     Velocity: require('./Velocity')