add ComponentEvent, Component.dispatch method

Author: jwu

index.js

@@ -1,3 +1,4 @@
+export { default as ComponentEvent } from './lib/event';
 export { default as Component } from './lib/component';
 export { default as Entity } from './lib/entity';
 export { default as Level } from './lib/level';

lib/component.js

@@ -1,3 +1,5 @@
+import ComponentEvent from './event';
+
 export default class Component {
   constructor() {
     this._enabled = true;
@@ -42,6 +44,17 @@ export default class Component {
     return this._entity;
   }
 
+  dispatch(evt, opts) {
+    let event = evt;
+    if (typeof evt === 'string') {
+      event = new ComponentEvent(evt, opts);
+    }
+
+    event.target = this._entity;
+    event.component = this;
+    this._entity.dispatch(event);
+  }
+
   destroy() {
     if (this._destroyed) {
       return;

lib/event.js

@@ -0,0 +1,15 @@
+import { Event } from 'event-sys';
+
+export default class ComponentEvent extends Event {
+  /**
+   * @param {string} name
+   * @param {object} opts
+   * @param {object} [opts.detail]
+   * @param {boolean} [opts.bubbles]
+   */
+  constructor(name, opts) {
+    super(name, opts);
+
+    this.component = null;
+  }
+}

package.json

@@ -1,6 +1,6 @@
 {
   "name": "ecs.js",
-  "version": "1.4.1",
+  "version": "1.5.0",
   "description": "Entity-Component-System for javascript",
   "main": "dist/ecs.js",
   "module": "index.js",
@@ -31,7 +31,7 @@
   "homepage": "https://github.com/gamedev-js/ecs.js/issues",
   "dependencies": {},
   "devDependencies": {
-    "event-sys": "^1.1.0",
+    "event-sys": "^1.1.3",
     "fs-jetpack": "^0.13.0",
     "memop": "^1.6.0",
     "rollup": "^0.54.1",

yarn.lock

@@ -478,9 +478,9 @@ esutils@^2.0.2:
   version "2.0.2"
   resolved "https://registry.yarnpkg.com/esutils/-/esutils-2.0.2.tgz#0abf4f1caa5bcb1f7a9d8acc6dea4faaa04bac9b"
 
-event-sys@^1.1.0:
-  version "1.1.0"
-  resolved "https://registry.yarnpkg.com/event-sys/-/event-sys-1.1.0.tgz#eaf64361acf885a7e6a8eae3e7cc3acfc9aed23a"
+event-sys@^1.1.3:
+  version "1.1.3"
+  resolved "https://registry.yarnpkg.com/event-sys/-/event-sys-1.1.3.tgz#55bc5bb15f8f54da8e3576f80c37833050b572f1"
 
 events-to-array@^1.0.1:
   version "1.1.2"