Merge branch 'release/2.0.0'2.0.0

2 files changed, 559 insertions, 344 deletions

diff --git a/dist/serpentity.js b/dist/serpentity.js
index 8257ad2..d59bd63 100644
--- a/dist/serpentity.js
+++ b/dist/serpentity.js
@@ -1,282 +1,111 @@
-'use strict';
+(function webpackUniversalModuleDefinition(root, factory) {
+	if(typeof exports === 'object' && typeof module === 'object')
+		module.exports = factory();
+	else if(typeof define === 'function' && define.amd)
+		define([], factory);
+	else if(typeof exports === 'object')
+		exports["Serpentity"] = factory();
+	else
+		root["Serpentity"] = factory();
+})(this, function() {
+return /******/ (function(modules) { // webpackBootstrap
+/******/ 	// The module cache
+/******/ 	var installedModules = {};
+/******/
+/******/ 	// The require function
+/******/ 	function __webpack_require__(moduleId) {
+/******/
+/******/ 		// Check if module is in cache
+/******/ 		if(installedModules[moduleId])
+/******/ 			return installedModules[moduleId].exports;
+/******/
+/******/ 		// Create a new module (and put it into the cache)
+/******/ 		var module = installedModules[moduleId] = {
+/******/ 			i: moduleId,
+/******/ 			l: false,
+/******/ 			exports: {}
+/******/ 		};
+/******/
+/******/ 		// Execute the module function
+/******/ 		modules[moduleId].call(module.exports, module, module.exports, __webpack_require__);
+/******/
+/******/ 		// Flag the module as loaded
+/******/ 		module.l = true;
+/******/
+/******/ 		// Return the exports of the module
+/******/ 		return module.exports;
+/******/ 	}
+/******/
+/******/
+/******/ 	// expose the modules object (__webpack_modules__)
+/******/ 	__webpack_require__.m = modules;
+/******/
+/******/ 	// expose the module cache
+/******/ 	__webpack_require__.c = installedModules;
+/******/
+/******/ 	// identity function for calling harmony imports with the correct context
+/******/ 	__webpack_require__.i = function(value) { return value; };
+/******/
+/******/ 	// define getter function for harmony exports
+/******/ 	__webpack_require__.d = function(exports, name, getter) {
+/******/ 		if(!__webpack_require__.o(exports, name)) {
+/******/ 			Object.defineProperty(exports, name, {
+/******/ 				configurable: false,
+/******/ 				enumerable: true,
+/******/ 				get: getter
+/******/ 			});
+/******/ 		}
+/******/ 	};
+/******/
+/******/ 	// getDefaultExport function for compatibility with non-harmony modules
+/******/ 	__webpack_require__.n = function(module) {
+/******/ 		var getter = module && module.__esModule ?
+/******/ 			function getDefault() { return module['default']; } :
+/******/ 			function getModuleExports() { return module; };
+/******/ 		__webpack_require__.d(getter, 'a', getter);
+/******/ 		return getter;
+/******/ 	};
+/******/
+/******/ 	// Object.prototype.hasOwnProperty.call
+/******/ 	__webpack_require__.o = function(object, property) { return Object.prototype.hasOwnProperty.call(object, property); };
+/******/
+/******/ 	// __webpack_public_path__
+/******/ 	__webpack_require__.p = "";
+/******/
+/******/ 	// Load entry module and return exports
+/******/ 	return __webpack_require__(__webpack_require__.s = 5);
+/******/ })
+/************************************************************************/
+/******/ ([
+/* 0 */
+/***/ (function(module, exports, __webpack_require__) {
 
-/*
-Serpentity is a simple entity framework inspired by Ash.
-
-Usage:
-
-    let Serpentity = require('serpentity');
-
-## Instantiating an engine
-
-    let engine = Serpentity();
-
-Add entities or systems, systems are added with a priority (the smaller
-the number, the earlier it will be called):
-
-    engine.addEntity(entityFactory());
-    engine.addSystem(new GameSystem(), priority);
-
-Update all systems:
-
-    engine.update(dt);
-
-Remove entities or systems:
-
-    engine.removeEntity(entityReference);
-    engine.removeSystem(systemReference);
-
-## Creating Entities
-
-Entities are the basic object of Serpentity, and they do nothing.
-
-    let entity = new Serpentity.Entity();
-
-All the behavior is added through components
-
-## Creating Components
-
-Components define data that we can add to an entity. This data will
-eventually be consumed by "Systems"
-
-    let PositionComponent = class PositionComponent extends Serpentity.Component {
-      constructor (config) {
-        this.x = 0;
-        this.y = 0;
-
-        super(config);
-      }
-    };
-
-You can add components to entities by using the add method:
-
-    entity.addComponent(new PositionComponent());
-
-
-Systems can refer to entities by requesting nodes.
-
-## Working with Nodes
-
-Nodes are sets of components that you define, so your system can require
-entities that always follow the API defined in the node.
-
-    let MovementNode = class MovementNode extends Serpentity.Node;
-    MovementNode.position = PositionComponent;
-    MovementNode.motion = MotionComponent;
-
-You can then request an array of all the nodes representing entities
-that comply with that API
-
-    engine.getNodes(MovementNode);
-
-## Creating Systems
-
-Systems are called on every update, and they use components through nodes.
-
-    let TestSystem = class TestSystem extends Serpentity.System {
-      added (engine){
-        this.nodeList = engine.getNodes(MovementNode);
-      },
-      removed (engine){
-        this.nodeList = undefined;
-      }
-      update (dt){
-        let node;
-        for (node of this.nodeList) {
-          console.log(`Current position is: ${node.position.x},${node.position.y}`);
-        }
-      }
-    };
-
-## That's it
-
-Just run `engine.update(dt)` in your game loop :D
+"use strict";
 
-*/
 
-var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
+/*
+ * Components store data. Nothing to say here really, just
+ * inherit and add a prototype, or don't even inherit, see?
+ * It's just an empty class, so what I'm trying to say is your
+ * components can be any class whatsoever.
+ */
 
 function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
 
-var Serpentity = function () {
-  function Serpentity(config) {
-    _classCallCheck(this, Serpentity);
-
-    this.systems = [];
-    this.entities = [];
-    this._nodeCollections = [];
-    this._nodeCollectionKeys = [];
-
-    Object.assign(this, config || {});
-  }
-
-  /*
-   * Adds a system to the engine, so its update method will be called
-   * with the others. Triggers added hook.
-   *
-   * returns true if added succesfully, false if already added
-   */
-
-
-  _createClass(Serpentity, [{
-    key: 'addSystem',
-    value: function addSystem(system, priority) {
-      var lastIndex = void 0,
-          found = void 0;
-
-      if (this.systems.indexOf(system) >= 0) {
-        return false;
-      }
-
-      system.priority = priority;
-
-      found = false;
-      lastIndex = 0;
-
-      this.systems.some(function findPriority(existingSystem, i) {
-        lastIndex = i;
-        if (existingSystem.priority >= system.priority) {
-          found = true;
-          return true;
-        }
-      });
-
-      if (!found) {
-        lastIndex += 1;
-      }
-
-      this.systems.splice(lastIndex, 0, system);
-      system.added(this);
-      return true;
-    }
-
-    /*
-     * Removes a system from the engine, so its update method will no
-     * longer will be called. Triggers the removed hook.
-     *
-     * returns true if removed succesfully, false if already added
-     */
-
-  }, {
-    key: 'removeSystem',
-    value: function removeSystem(system) {
-      var position = void 0;
-
-      position = this.systems.indexOf(system);
-      if (position >= 0) {
-        this.systems[position].removed(this);
-        this.systems.splice(position, 1);
-        return true;
-      }
-
-      return false;
-    }
-
-    /*
-     * Adds an entity to the engine, adds to existing node collections
-     *
-     * returns true if added, false if already there
-     */
-
-  }, {
-    key: 'addEntity',
-    value: function addEntity(entity) {
-      if (this.entities.indexOf(entity) >= 0) {
-        return false;
-      }
-      this.entities.push(entity);
-
-      this._nodeCollections.forEach(function (collection) {
-        collection.add(entity);
-      });
-
-      return true;
-    }
-
-    /*
-     * Removes entity from system, removing from all node collections
-     *
-     * returns true if removed, false if not present
-     */
-
-  }, {
-    key: 'removeEntity',
-    value: function removeEntity(entity) {
-      var position = void 0;
-
-      position = this.entities.indexOf(entity);
-      if (position >= 0) {
-        this._nodeCollections.forEach(function (collection) {
-          collection.remove(entity);
-        });
-
-        this.entities.splice(position, 1);
-        return true;
-      }
-
-      return false;
-    }
-
-    /*
-     * Given a Node Class, retrieves a list of all the nodes for each
-     * applicable entity.
-     */
-
-  }, {
-    key: 'getNodes',
-    value: function getNodes(nodeType) {
-      var position = void 0,
-          nodeCollection = void 0;
-
-      position = this._nodeCollectionKeys.indexOf(nodeType);
-
-      if (position >= 0) {
-        return this._nodeCollections[position].nodes;
-      }
-
-      nodeCollection = new Serpentity.NodeCollection({
-        type: nodeType
-      });
-
-      this._nodeCollectionKeys.push(nodeType);
-      this._nodeCollections.push(nodeCollection);
-
-      this.entities.forEach(function (entity) {
-        nodeCollection.add(entity);
-      });
-
-      return nodeCollection.nodes;
-    }
-
-    /*
-     * Calls update for every loaded system.
-     */
+var Component = function Component(config) {
+  _classCallCheck(this, Component);
 
-  }, {
-    key: 'update',
-    value: function update(dt) {
-      this.systems.forEach(function (system) {
-        system.update(dt);
-      });
-    }
-  }]);
+  Object.assign(this, config);
+};
 
-  return Serpentity;
-}();
+module.exports = Component;
 
-// Add namespaced objects.
-if (typeof module !== 'undefined' && undefined.module !== module) {
-  Serpentity.Component = require('./serpentity/component.js');
-  Serpentity.Entity = require('./serpentity/entity.js');
-  Serpentity.Node = require('./serpentity/node.js');
-  Serpentity.NodeCollection = require('./serpentity/node_collection.js');
-  Serpentity.System = require('./serpentity/system.js');
+/***/ }),
+/* 1 */
+/***/ (function(module, exports, __webpack_require__) {
 
-  module.exports = Serpentity;
-}
-'use strict';
+"use strict";
 
-/* global Serpentity */
 
 /*
  * The entity gives the entity framework its name. It exists only
@@ -294,7 +123,7 @@ var Entity = function () {
     this._componentKeys = [];
     this._components = [];
 
-    Object.assign(this, config || {});
+    Object.assign(this, config);
   }
 
   /*
@@ -307,6 +136,7 @@ var Entity = function () {
   _createClass(Entity, [{
     key: 'addComponent',
     value: function addComponent(component) {
+
       if (this._componentKeys.indexOf(component.constructor) >= 0) {
         return false;
       }
@@ -322,6 +152,7 @@ var Entity = function () {
   }, {
     key: 'hasComponent',
     value: function hasComponent(componentClass) {
+
       if (this._componentKeys.indexOf(componentClass) >= 0) {
         return true;
       }
@@ -335,6 +166,7 @@ var Entity = function () {
   }, {
     key: 'getComponent',
     value: function getComponent(componentClass) {
+
       var position = this._componentKeys.indexOf(componentClass);
       if (position >= 0) {
         return this._components[position];
@@ -345,14 +177,14 @@ var Entity = function () {
   return Entity;
 }();
 
-if (typeof module !== 'undefined' && undefined.module !== module) {
-  module.exports = Entity;
-} else {
-  Serpentity.Entity = Entity;
-}
-'use strict';
+module.exports = Entity;
+
+/***/ }),
+/* 2 */
+/***/ (function(module, exports, __webpack_require__) {
+
+"use strict";
 
-/* global Serpentity */
 
 /*
  * A node describes a set of components in order to describe entities
@@ -373,13 +205,20 @@ var Node = function () {
      * false otherwise
      */
     value: function matches(entity) {
-      var types = this.types;
 
-      for (var typeName in types) {
-        if (types.hasOwnProperty(typeName)) {
+      var typeNames = Object.keys(this.types);
+
+      var _iteratorNormalCompletion = true;
+      var _didIteratorError = false;
+      var _iteratorError = undefined;
 
+      try {
+        for (var _iterator = typeNames[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
+          var typeName = _step.value;
+
+
+          var type = this.types[typeName];
           var matched = false;
-          var type = types[typeName];
 
           if (entity.hasComponent(type)) {
             matched = true;
@@ -389,6 +228,19 @@ var Node = function () {
             return false;
           }
         }
+      } catch (err) {
+        _didIteratorError = true;
+        _iteratorError = err;
+      } finally {
+        try {
+          if (!_iteratorNormalCompletion && _iterator.return) {
+            _iterator.return();
+          }
+        } finally {
+          if (_didIteratorError) {
+            throw _iteratorError;
+          }
+        }
       }
 
       return true;
@@ -400,20 +252,20 @@ var Node = function () {
 
     this.types = {};
 
-    Object.assign(this, config || {});
+    Object.assign(this, config);
   }
 
   return Node;
 }();
 
-if (typeof module !== 'undefined' && undefined.module !== module) {
-  module.exports = Node;
-} else {
-  Serpentity.Node = Node;
-}
-'use strict';
+module.exports = Node;
+
+/***/ }),
+/* 3 */
+/***/ (function(module, exports, __webpack_require__) {
+
+"use strict";
 
-/* global Serpentity */
 
 /*
  * Node Collections contain nodes, in order to keep the lists of nodes
@@ -434,7 +286,7 @@ var NodeCollection = function () {
     this.nodes = [];
     this.type = null;
 
-    Object.assign(this, config || {});
+    Object.assign(this, config);
   }
 
   /*
@@ -453,13 +305,33 @@ var NodeCollection = function () {
 
         var node = new this.type({});
         var types = this.type.types;
+        var typeNames = Object.keys(types);
 
         node.entity = entity;
 
-        for (var typeName in types) {
-          if (types.hasOwnProperty(typeName)) {
+        var _iteratorNormalCompletion = true;
+        var _didIteratorError = false;
+        var _iteratorError = undefined;
+
+        try {
+          for (var _iterator = typeNames[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
+            var typeName = _step.value;
+
             node[typeName] = entity.getComponent(types[typeName]);
           }
+        } catch (err) {
+          _didIteratorError = true;
+          _iteratorError = err;
+        } finally {
+          try {
+            if (!_iteratorNormalCompletion && _iterator.return) {
+              _iterator.return();
+            }
+          } finally {
+            if (_didIteratorError) {
+              throw _iteratorError;
+            }
+          }
         }
 
         this.nodes.push(node);
@@ -479,20 +351,22 @@ var NodeCollection = function () {
   }, {
     key: 'remove',
     value: function remove(entity) {
-      var found = -1;
 
-      this.nodes.forEach(function (node, i) {
+      var foundIndex = -1;
+
+      var found = this.nodes.some(function (node, i) {
+
         if (node.entity === entity) {
-          found = i;
+          foundIndex = i;
+          return true;
         }
       });
 
-      if (found >= 0) {
-        this.nodes.splice(found, 1);
-        return true;
+      if (found) {
+        this.nodes.splice(foundIndex, 1);
       }
 
-      return false;
+      return found;
     }
 
     /*
@@ -502,31 +376,32 @@ var NodeCollection = function () {
   }, {
     key: '_entityExists',
     value: function _entityExists(entity) {
+
       var found = false;
 
-      var _iteratorNormalCompletion = true;
-      var _didIteratorError = false;
-      var _iteratorError = undefined;
+      var _iteratorNormalCompletion2 = true;
+      var _didIteratorError2 = false;
+      var _iteratorError2 = undefined;
 
       try {
-        for (var _iterator = this.nodes[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
-          var node = _step.value;
+        for (var _iterator2 = this.nodes[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {
+          var node = _step2.value;
 
           if (node.entity === entity) {
             found = true;
           }
         }
       } catch (err) {
-        _didIteratorError = true;
-        _iteratorError = err;
+        _didIteratorError2 = true;
+        _iteratorError2 = err;
       } finally {
         try {
-          if (!_iteratorNormalCompletion && _iterator.return) {
-            _iterator.return();
+          if (!_iteratorNormalCompletion2 && _iterator2.return) {
+            _iterator2.return();
           }
         } finally {
-          if (_didIteratorError) {
-            throw _iteratorError;
+          if (_didIteratorError2) {
+            throw _iteratorError2;
           }
         }
       }
@@ -538,38 +413,14 @@ var NodeCollection = function () {
   return NodeCollection;
 }();
 
-if (typeof module !== 'undefined' && undefined.module !== module) {
-  module.exports = NodeCollection;
-} else {
-  Serpentity.NodeCollection = NodeCollection;
-}
-'use strict';
-
-/* global Serpentity */
-
-/*
- * Components store data. Nothing to say here really, just
- * inherit and add a prototype, or don't even inherit, see?
- * It's just an empty class, so what I'm trying to say is your
- * components can be any class whatsoever.
- */
-
-function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+module.exports = NodeCollection;
 
-var Component = function Component(config) {
-  _classCallCheck(this, Component);
-
-  Object.assign(this, config || {});
-};
+/***/ }),
+/* 4 */
+/***/ (function(module, exports, __webpack_require__) {
 
-if (typeof module !== 'undefined' && undefined.module !== module) {
-  module.exports = Component;
-} else {
-  Serpentity.Component = Component;
-}
-'use strict';
+"use strict";
 
-/* global Serpentity */
 
 /*
  * Systems contain most of the logic, and work with nodes in order to
@@ -626,8 +477,372 @@ var System = function () {
   return System;
 }();
 
-if (typeof module !== 'undefined' && undefined.module !== module) {
-  module.exports = System;
-} else {
-  Serpentity.System = System;
-}
\ No newline at end of file
+module.exports = System;
+
+/***/ }),
+/* 5 */
+/***/ (function(module, exports, __webpack_require__) {
+
+"use strict";
+
+
+/*
+Serpentity is a simple entity framework inspired by Ash.
+
+Usage:
+
+    const Serpentity = require('serpentity');
+
+## Instantiating an engine
+
+    const engine = new Serpentity();
+
+Add entities or systems, systems are added with a priority (the smaller
+the number, the earlier it will be called):
+
+    engine.addEntity(entityFactory());
+    engine.addSystem(new GameSystem(), priority);
+
+Update all systems:
+
+    engine.update(dt);
+
+Remove entities or systems:
+
+    engine.removeEntity(entityReference);
+    engine.removeSystem(systemReference);
+
+## Creating Entities
+
+Entities are the basic object of Serpentity, and they do nothing.
+
+    const entity = new Serpentity.Entity();
+
+All the behavior is added through components
+
+## Creating Components
+
+Components define data that we can add to an entity. This data will
+eventually be consumed by "Systems"
+
+    const PositionComponent = class PositionComponent extends Serpentity.Component {
+      constructor(config) {
+
+        this.x = 0;
+        this.y = 0;
+
+        super(config);
+      }
+    };
+
+You can add components to entities by using the add method:
+
+    entity.addComponent(new PositionComponent());
+
+
+Systems can refer to entities by requesting nodes.
+
+## Working with Nodes
+
+Nodes are sets of components that you define, so your system can require
+entities that always follow the API defined in the node.
+
+    const MovementNode = class MovementNode extends Serpentity.Node;
+    MovementNode.position = PositionComponent;
+    MovementNode.motion = MotionComponent;
+
+You can then request an array of all the nodes representing entities
+that comply with that API
+
+    engine.getNodes(MovementNode);
+
+## Creating Systems
+
+Systems are called on every update, and they use components through nodes.
+
+    const TestSystem = class TestSystem extends Serpentity.System {
+      added(engine){
+
+        this.nodeList = engine.getNodes(MovementNode);
+      }
+
+      removed(engine){
+
+        this.nodeList = undefined;
+      }
+
+      update(dt){
+
+        for (const node of this.nodeList) {
+          console.log(`Current position is: ${node.position.x},${node.position.y}`);
+        }
+      }
+    };
+
+## That's it
+
+Just run `engine.update(dt)` in your game loop :D
+
+*/
+
+var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();
+
+function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }
+
+var Serpentity = function () {
+  function Serpentity(config) {
+    _classCallCheck(this, Serpentity);
+
+    this.systems = [];
+    this.entities = [];
+    this._nodeCollections = [];
+    this._nodeCollectionKeys = [];
+
+    Object.assign(this, config);
+  }
+
+  /*
+   * Adds a system to the engine, so its update method will be called
+   * with the others. Triggers added hook.
+   *
+   * returns true if added succesfully, false if already added
+   */
+
+
+  _createClass(Serpentity, [{
+    key: 'addSystem',
+    value: function addSystem(system, priority) {
+
+      if (this.systems.indexOf(system) >= 0) {
+        return false;
+      }
+
+      system.priority = priority;
+
+      var lastIndex = 0;
+
+      var found = this.systems.some(function (existingSystem, i) {
+
+        lastIndex = i;
+        if (existingSystem.priority >= system.priority) {
+          return true;
+        }
+      });
+
+      if (!found) {
+        lastIndex += 1;
+      }
+
+      this.systems.splice(lastIndex, 0, system);
+      system.added(this);
+      return true;
+    }
+
+    /*
+     * Removes a system from the engine, so its update method will no
+     * longer will be called. Triggers the removed hook.
+     *
+     * returns true if removed succesfully, false if already added
+     */
+
+  }, {
+    key: 'removeSystem',
+    value: function removeSystem(system) {
+
+      var position = this.systems.indexOf(system);
+      if (position >= 0) {
+        this.systems[position].removed(this);
+        this.systems.splice(position, 1);
+        return true;
+      }
+
+      return false;
+    }
+
+    /*
+     * Adds an entity to the engine, adds to existing node collections
+     *
+     * returns true if added, false if already there
+     */
+
+  }, {
+    key: 'addEntity',
+    value: function addEntity(entity) {
+
+      if (this.entities.indexOf(entity) >= 0) {
+        return false;
+      }
+      this.entities.push(entity);
+
+      var _iteratorNormalCompletion = true;
+      var _didIteratorError = false;
+      var _iteratorError = undefined;
+
+      try {
+        for (var _iterator = this._nodeCollections[Symbol.iterator](), _step; !(_iteratorNormalCompletion = (_step = _iterator.next()).done); _iteratorNormalCompletion = true) {
+          var collection = _step.value;
+
+          collection.add(entity);
+        }
+      } catch (err) {
+        _didIteratorError = true;
+        _iteratorError = err;
+      } finally {
+        try {
+          if (!_iteratorNormalCompletion && _iterator.return) {
+            _iterator.return();
+          }
+        } finally {
+          if (_didIteratorError) {
+            throw _iteratorError;
+          }
+        }
+      }
+
+      return true;
+    }
+
+    /*
+     * Removes entity from system, removing from all node collections
+     *
+     * returns true if removed, false if not present
+     */
+
+  }, {
+    key: 'removeEntity',
+    value: function removeEntity(entity) {
+
+      var position = this.entities.indexOf(entity);
+      if (position >= 0) {
+        var _iteratorNormalCompletion2 = true;
+        var _didIteratorError2 = false;
+        var _iteratorError2 = undefined;
+
+        try {
+          for (var _iterator2 = this._nodeCollections[Symbol.iterator](), _step2; !(_iteratorNormalCompletion2 = (_step2 = _iterator2.next()).done); _iteratorNormalCompletion2 = true) {
+            var collection = _step2.value;
+
+            collection.remove(entity);
+          }
+        } catch (err) {
+          _didIteratorError2 = true;
+          _iteratorError2 = err;
+        } finally {
+          try {
+            if (!_iteratorNormalCompletion2 && _iterator2.return) {
+              _iterator2.return();
+            }
+          } finally {
+            if (_didIteratorError2) {
+              throw _iteratorError2;
+            }
+          }
+        }
+
+        this.entities.splice(position, 1);
+        return true;
+      }
+
+      return false;
+    }
+
+    /*
+     * Given a Node Class, retrieves a list of all the nodes for each
+     * applicable entity.
+     */
+
+  }, {
+    key: 'getNodes',
+    value: function getNodes(nodeType) {
+
+      var position = this._nodeCollectionKeys.indexOf(nodeType);
+
+      if (position >= 0) {
+        return this._nodeCollections[position].nodes;
+      }
+
+      var nodeCollection = new Serpentity.NodeCollection({
+        type: nodeType
+      });
+
+      this._nodeCollectionKeys.push(nodeType);
+      this._nodeCollections.push(nodeCollection);
+
+      var _iteratorNormalCompletion3 = true;
+      var _didIteratorError3 = false;
+      var _iteratorError3 = undefined;
+
+      try {
+        for (var _iterator3 = this.entities[Symbol.iterator](), _step3; !(_iteratorNormalCompletion3 = (_step3 = _iterator3.next()).done); _iteratorNormalCompletion3 = true) {
+          var entity = _step3.value;
+
+          nodeCollection.add(entity);
+        }
+      } catch (err) {
+        _didIteratorError3 = true;
+        _iteratorError3 = err;
+      } finally {
+        try {
+          if (!_iteratorNormalCompletion3 && _iterator3.return) {
+            _iterator3.return();
+          }
+        } finally {
+          if (_didIteratorError3) {
+            throw _iteratorError3;
+          }
+        }
+      }
+
+      return nodeCollection.nodes;
+    }
+
+    /*
+     * Calls update for every loaded system.
+     */
+
+  }, {
+    key: 'update',
+    value: function update(dt) {
+      var _iteratorNormalCompletion4 = true;
+      var _didIteratorError4 = false;
+      var _iteratorError4 = undefined;
+
+      try {
+
+        for (var _iterator4 = this.systems[Symbol.iterator](), _step4; !(_iteratorNormalCompletion4 = (_step4 = _iterator4.next()).done); _iteratorNormalCompletion4 = true) {
+          var system = _step4.value;
+
+          system.update(dt);
+        }
+      } catch (err) {
+        _didIteratorError4 = true;
+        _iteratorError4 = err;
+      } finally {
+        try {
+          if (!_iteratorNormalCompletion4 && _iterator4.return) {
+            _iterator4.return();
+          }
+        } finally {
+          if (_didIteratorError4) {
+            throw _iteratorError4;
+          }
+        }
+      }
+    }
+  }]);
+
+  return Serpentity;
+}();
+
+// Add namespaced objects.
+Serpentity.Component = __webpack_require__(0);
+Serpentity.Entity = __webpack_require__(1);
+Serpentity.Node = __webpack_require__(2);
+Serpentity.NodeCollection = __webpack_require__(3);
+Serpentity.System = __webpack_require__(4);
+
+module.exports = Serpentity;
+
+/***/ })
+/******/ ]);
+});
\ No newline at end of file
diff --git a/dist/serpentity.min.js b/dist/serpentity.min.js
index abf6ba1..7f431a2 100644
--- a/dist/serpentity.min.js
+++ b/dist/serpentity.min.js
@@ -1 +1 @@
-"use strict";function _classCallCheck(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}function _classCallCheck(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}function _classCallCheck(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}function _classCallCheck(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}function _classCallCheck(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}function _classCallCheck(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")}var _createClass=function(){function e(e,t){for(var n=0;n<t.length;n++){var o=t[n];o.enumerable=o.enumerable||!1,o.configurable=!0,"value"in o&&(o.writable=!0),Object.defineProperty(e,o.key,o)}}return function(t,n,o){return n&&e(t.prototype,n),o&&e(t,o),t}}(),Serpentity=function(){function e(t){_classCallCheck(this,e),this.systems=[],this.entities=[],this._nodeCollections=[],this._nodeCollectionKeys=[],Object.assign(this,t||{})}return _createClass(e,[{key:"addSystem",value:function(e,t){var n=void 0,o=void 0;return this.systems.indexOf(e)>=0?!1:(e.priority=t,o=!1,n=0,this.systems.some(function(t,i){return n=i,t.priority>=e.priority?(o=!0,!0):void 0}),o||(n+=1),this.systems.splice(n,0,e),e.added(this),!0)}},{key:"removeSystem",value:function(e){var t=void 0;return t=this.systems.indexOf(e),t>=0?(this.systems[t].removed(this),this.systems.splice(t,1),!0):!1}},{key:"addEntity",value:function(e){return this.entities.indexOf(e)>=0?!1:(this.entities.push(e),this._nodeCollections.forEach(function(t){t.add(e)}),!0)}},{key:"removeEntity",value:function(e){var t=void 0;return t=this.entities.indexOf(e),t>=0?(this._nodeCollections.forEach(function(t){t.remove(e)}),this.entities.splice(t,1),!0):!1}},{key:"getNodes",value:function(t){var n=void 0,o=void 0;return n=this._nodeCollectionKeys.indexOf(t),n>=0?this._nodeCollections[n].nodes:(o=new e.NodeCollection({type:t}),this._nodeCollectionKeys.push(t),this._nodeCollections.push(o),this.entities.forEach(function(e){o.add(e)}),o.nodes)}},{key:"update",value:function(e){this.systems.forEach(function(t){t.update(e)})}}]),e}();"undefined"!=typeof module&&(void 0).module!==module&&(Serpentity.Component=require("./serpentity/component.js"),Serpentity.Entity=require("./serpentity/entity.js"),Serpentity.Node=require("./serpentity/node.js"),Serpentity.NodeCollection=require("./serpentity/node_collection.js"),Serpentity.System=require("./serpentity/system.js"),module.exports=Serpentity);var _createClass=function(){function e(e,t){for(var n=0;n<t.length;n++){var o=t[n];o.enumerable=o.enumerable||!1,o.configurable=!0,"value"in o&&(o.writable=!0),Object.defineProperty(e,o.key,o)}}return function(t,n,o){return n&&e(t.prototype,n),o&&e(t,o),t}}(),Entity=function(){function e(t){_classCallCheck(this,e),this._componentKeys=[],this._components=[],Object.assign(this,t||{})}return _createClass(e,[{key:"addComponent",value:function(e){return this._componentKeys.indexOf(e.constructor)>=0?!1:(this._componentKeys.push(e.constructor),this._components.push(e),!0)}},{key:"hasComponent",value:function(e){return!!(this._componentKeys.indexOf(e)>=0)}},{key:"getComponent",value:function(e){var t=this._componentKeys.indexOf(e);return t>=0?this._components[t]:void 0}}]),e}();"undefined"!=typeof module&&(void 0).module!==module?module.exports=Entity:Serpentity.Entity=Entity;var _createClass=function(){function e(e,t){for(var n=0;n<t.length;n++){var o=t[n];o.enumerable=o.enumerable||!1,o.configurable=!0,"value"in o&&(o.writable=!0),Object.defineProperty(e,o.key,o)}}return function(t,n,o){return n&&e(t.prototype,n),o&&e(t,o),t}}(),Node=function(){function e(t){_classCallCheck(this,e),this.types={},Object.assign(this,t||{})}return _createClass(e,null,[{key:"matches",value:function(e){var t=this.types;for(var n in t)if(t.hasOwnProperty(n)){var o=!1,i=t[n];if(e.hasComponent(i)&&(o=!0),!o)return!1}return!0}}]),e}();"undefined"!=typeof module&&(void 0).module!==module?module.exports=Node:Serpentity.Node=Node;var _createClass=function(){function e(e,t){for(var n=0;n<t.length;n++){var o=t[n];o.enumerable=o.enumerable||!1,o.configurable=!0,"value"in o&&(o.writable=!0),Object.defineProperty(e,o.key,o)}}return function(t,n,o){return n&&e(t.prototype,n),o&&e(t,o),t}}(),NodeCollection=function(){function e(t){_classCallCheck(this,e),this.nodes=[],this.type=null,Object.assign(this,t||{})}return _createClass(e,[{key:"add",value:function(e){if(this.type.matches(e)&&!this._entityExists(e)){var t=new this.type({}),n=this.type.types;t.entity=e;for(var o in n)n.hasOwnProperty(o)&&(t[o]=e.getComponent(n[o]));return this.nodes.push(t),!0}return!1}},{key:"remove",value:function(e){var t=-1;return this.nodes.forEach(function(n,o){n.entity===e&&(t=o)}),t>=0?(this.nodes.splice(t,1),!0):!1}},{key:"_entityExists",value:function(e){var t=!1,n=!0,o=!1,i=void 0;try{for(var s,r=this.nodes[Symbol.iterator]();!(n=(s=r.next()).done);n=!0){var a=s.value;a.entity===e&&(t=!0)}}catch(l){o=!0,i=l}finally{try{!n&&r["return"]&&r["return"]()}finally{if(o)throw i}}return t}}]),e}();"undefined"!=typeof module&&(void 0).module!==module?module.exports=NodeCollection:Serpentity.NodeCollection=NodeCollection;var Component=function e(t){_classCallCheck(this,e),Object.assign(this,t||{})};"undefined"!=typeof module&&(void 0).module!==module?module.exports=Component:Serpentity.Component=Component;var _createClass=function(){function e(e,t){for(var n=0;n<t.length;n++){var o=t[n];o.enumerable=o.enumerable||!1,o.configurable=!0,"value"in o&&(o.writable=!0),Object.defineProperty(e,o.key,o)}}return function(t,n,o){return n&&e(t.prototype,n),o&&e(t,o),t}}(),System=function(){function e(){_classCallCheck(this,e)}return _createClass(e,[{key:"added",value:function(){}},{key:"removed",value:function(){}},{key:"update",value:function(){}}]),e}();"undefined"!=typeof module&&(void 0).module!==module?module.exports=System:Serpentity.System=System;
\ No newline at end of file
+!function(t,e){"object"==typeof exports&&"object"==typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):"object"==typeof exports?exports.Serpentity=e():t.Serpentity=e()}(this,function(){return function(t){function e(r){if(n[r])return n[r].exports;var o=n[r]={i:r,l:!1,exports:{}};return t[r].call(o.exports,o,o.exports,e),o.l=!0,o.exports}var n={};return e.m=t,e.c=n,e.i=function(t){return t},e.d=function(t,n,r){e.o(t,n)||Object.defineProperty(t,n,{configurable:!1,enumerable:!0,get:r})},e.n=function(t){var n=t&&t.__esModule?function(){return t.default}:function(){return t};return e.d(n,"a",n),n},e.o=function(t,e){return Object.prototype.hasOwnProperty.call(t,e)},e.p="",e(e.s=5)}([function(t,e,n){"use strict";function r(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")}var o=function t(e){r(this,t),Object.assign(this,e)};t.exports=o},function(t,e,n){"use strict";function r(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")}var o=function(){function t(t,e){for(var n=0;n<e.length;n++){var r=e[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(t,r.key,r)}}return function(e,n,r){return n&&t(e.prototype,n),r&&t(e,r),e}}(),i=function(){function t(e){r(this,t),this._componentKeys=[],this._components=[],Object.assign(this,e)}return o(t,[{key:"addComponent",value:function(t){return!(this._componentKeys.indexOf(t.constructor)>=0)&&(this._componentKeys.push(t.constructor),this._components.push(t),!0)}},{key:"hasComponent",value:function(t){return this._componentKeys.indexOf(t)>=0}},{key:"getComponent",value:function(t){var e=this._componentKeys.indexOf(t);if(e>=0)return this._components[e]}}]),t}();t.exports=i},function(t,e,n){"use strict";function r(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")}var o=function(){function t(t,e){for(var n=0;n<e.length;n++){var r=e[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(t,r.key,r)}}return function(e,n,r){return n&&t(e.prototype,n),r&&t(e,r),e}}(),i=function(){function t(e){r(this,t),this.types={},Object.assign(this,e)}return o(t,null,[{key:"matches",value:function(t){var e=Object.keys(this.types),n=!0,r=!1,o=void 0;try{for(var i,s=e[Symbol.iterator]();!(n=(i=s.next()).done);n=!0){var u=i.value,a=this.types[u],c=!1;if(t.hasComponent(a)&&(c=!0),!c)return!1}}catch(t){r=!0,o=t}finally{try{!n&&s.return&&s.return()}finally{if(r)throw o}}return!0}}]),t}();t.exports=i},function(t,e,n){"use strict";function r(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")}var o=function(){function t(t,e){for(var n=0;n<e.length;n++){var r=e[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(t,r.key,r)}}return function(e,n,r){return n&&t(e.prototype,n),r&&t(e,r),e}}(),i=function(){function t(e){r(this,t),this.nodes=[],this.type=null,Object.assign(this,e)}return o(t,[{key:"add",value:function(t){if(this.type.matches(t)&&!this._entityExists(t)){var e=new this.type({}),n=this.type.types,r=Object.keys(n);e.entity=t;var o=!0,i=!1,s=void 0;try{for(var u,a=r[Symbol.iterator]();!(o=(u=a.next()).done);o=!0){var c=u.value;e[c]=t.getComponent(n[c])}}catch(t){i=!0,s=t}finally{try{!o&&a.return&&a.return()}finally{if(i)throw s}}return this.nodes.push(e),!0}return!1}},{key:"remove",value:function(t){var e=-1,n=this.nodes.some(function(n,r){if(n.entity===t)return e=r,!0});return n&&this.nodes.splice(e,1),n}},{key:"_entityExists",value:function(t){var e=!1,n=!0,r=!1,o=void 0;try{for(var i,s=this.nodes[Symbol.iterator]();!(n=(i=s.next()).done);n=!0){i.value.entity===t&&(e=!0)}}catch(t){r=!0,o=t}finally{try{!n&&s.return&&s.return()}finally{if(r)throw o}}return e}}]),t}();t.exports=i},function(t,e,n){"use strict";function r(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")}var o=function(){function t(t,e){for(var n=0;n<e.length;n++){var r=e[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(t,r.key,r)}}return function(e,n,r){return n&&t(e.prototype,n),r&&t(e,r),e}}(),i=function(){function t(){r(this,t)}return o(t,[{key:"added",value:function(){}},{key:"removed",value:function(){}},{key:"update",value:function(){}}]),t}();t.exports=i},function(t,e,n){"use strict";function r(t,e){if(!(t instanceof e))throw new TypeError("Cannot call a class as a function")}var o=function(){function t(t,e){for(var n=0;n<e.length;n++){var r=e[n];r.enumerable=r.enumerable||!1,r.configurable=!0,"value"in r&&(r.writable=!0),Object.defineProperty(t,r.key,r)}}return function(e,n,r){return n&&t(e.prototype,n),r&&t(e,r),e}}(),i=function(){function t(e){r(this,t),this.systems=[],this.entities=[],this._nodeCollections=[],this._nodeCollectionKeys=[],Object.assign(this,e)}return 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this.entities.splice(e,1),!0}return!1}},{key:"getNodes",value:function(e){var n=this._nodeCollectionKeys.indexOf(e);if(n>=0)return this._nodeCollections[n].nodes;var r=new t.NodeCollection({type:e});this._nodeCollectionKeys.push(e),this._nodeCollections.push(r);var o=!0,i=!1,s=void 0;try{for(var u,a=this.entities[Symbol.iterator]();!(o=(u=a.next()).done);o=!0){var c=u.value;r.add(c)}}catch(t){i=!0,s=t}finally{try{!o&&a.return&&a.return()}finally{if(i)throw s}}return r.nodes}},{key:"update",value:function(t){var e=!0,n=!1,r=void 0;try{for(var o,i=this.systems[Symbol.iterator]();!(e=(o=i.next()).done);e=!0){o.value.update(t)}}catch(t){n=!0,r=t}finally{try{!e&&i.return&&i.return()}finally{if(n)throw r}}}}]),t}();i.Component=n(0),i.Entity=n(1),i.Node=n(2),i.NodeCollection=n(3),i.System=n(4),t.exports=i}])});
\ No newline at end of file