Pixi Animate

A plugin for PixiJS which provides a runtime for content export using PixiAnimate Extension.

Running Content

Installing Library

To run content exported with Pixi Animate, you must load the JavaScript library within your project. You can install using NPM or your package manager of choice:

NPM

npm install @ali/pixi-animate

Dependencies

• PixiJS v6 is required

Documentation

https://pixijs.io/animate/

Breaking Changes from v1.3

• DisplayObject, Container, Graphics, Sprite, and Text from PIXI are no longer modified. Instead, subclasses are provided from the library with the same names (or on the PIXI.animate namespace).
• static extend() and e() methods no longer exist on the display object classes.
• On Graphics, c() is no longer the shorthand for closePath(); instead, use cp().
• On Graphics, drawHole() and h() no longer exist. Instead of making the previous shape a hole, use beginHole() (bh()) before drawing a hole and endHole() (eh()) when it is complete.
• ShapesCache no longer exists.
• The SymbolLoader plugin no longer exists, so individual images are no longer added to PIXI's global texture cache by resource name, and shape assets are no longer added to a global shape cache.

Using the legacy bundle file dist/animate-legacy.js (requires PIXI namespace to be set up) will restore the removed functionality so that assets published for the previous version of PixiAnimate will work correctly.

Changes that the legacy build doesn't account for:

• load() no longer has so many variants allowed. Instead, the first argument is always the scene that you want to load, followed by either a callback or an options object. If using the legacy build, pass in the constructor for the main scene MovieClip, as you did in v1.
• createInstance now defaults to false, instead of true, when calling load().

Asset changes

The expected asset format is now a module based asset that uses ES6 classes, for use with require() (publish for CommonJS) or import() (publish for ES6). A script has been provided to update v1 assets to the new format - animate-upgrade (see bin/assetConversion.js for the source).

• CommonJS export: npx animate-upgrade path/to/myFile.js path/to/my2ndFile.js
  • Asset object is the main, and only, export.
  • Example: const asset = require('./myAsset');
• ES6 export: npx animate-upgrade -e path/to/myFile.js path/to/my2ndFile.js
  • Asset object is the default, and only, export.
  • Example: import asset from './myAsset' or const asset = await import('./myAsset');
• ES6 autorun export: npx animate-upgrade -a path/to/myFile.js path/to/my2ndFile.js
  • Asset automatically imports '@ali/pixi-animate' and runs setup(). Individual library items are exported by name in addition to the default export.
  • Example: import asset, {MyScene} from './myAsset'

Note that this script will do its best to update graphics paths (*.shapes.json files), but you should confirm that they were properly updated (closePath & hole changes).

If you want to have a Typescript declaration specific to an individual asset file, use the animate-type-assets script to generate a .d.ts file. This script will work on any of the 3 variants of the current asset format. Example: npx animate-type-assets path/to/myFile.js path/to/my2ndFile.js

Considerations & Limitations in Animate

While we now support publishing tweens from Animate, there are some things to take into account to ensure that you get the smallest, most efficient asset size possible.

Tweens

• Only classic tweens are supported at this time, not motion tweens (those are converted to keyframes automatically).
• Tweens that only affect color (alpha, tint, color adjustment) can't be detected during publishing, but will be included if your tween also affects the transformation (position, scale, rotation/skew).
• Custom ease curves are not supported at this time, only the default selection of eases.

Considerations with Graphics

In order to maintain an accurate export, Animate creates a unique Graphic (MovieClip in the runtime) instance for each usage in your library of anything that is a Graphic on the timeline. This has a few effects:

• Tweens inside Graphics won't be exported, but instead converted to keyframes.
• When a Graphic is interrupted on the timeline, each use will be a different instance in the export, causing a little bloat.

In order to minimize your asset size, there are a few things that you can do:

• Do all of your tweening at as high a level as you can manage, in something that is a MovieClip on the timeline.
• Use one Graphic per layer, and don't have blank keyframes between uses of it or mix & match Graphic instances on the same layer.
• If a Graphic is just a single frame, or is always animating through its full timeline, make it a MovieClip on the timeline instead.

License

Copyright (c) 2016 Jibo, Inc.

Released under the MIT License.