Introduction

What is Zerker

Zerker is a flexible and lightweight flutter canvas graphic animation library.

With Zerker, you can create a lot of seemingly cumbersome animation effects, such as animated animations, pop-up animations, scene transitions, icon effects, and more.

At the same time, you can create a lot of simple games with Zerker. Zerker contains elements such as sprites, scrolling backgrounds, and atlases, making it easy to create game worlds with them.

Source Code https://github.com/flutterkit/zerker (opens new window)

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Install

Use this package as a library

1. Depend on it

Add this to your package's pubspec.yaml file:

dependencies:
  zerker: <latest_version_here>

2. Install it

You can install packages from the command line: with Flutter:

$ flutter pub get

Alternatively, your editor might support flutter pub get. Check the docs for your editor to learn more.

3. Import it

Now in your Dart code, you can use:

import 'package:zerker/zerker.dart';

More detailed installation steps, you can refer to here. https://pub.dev/packages/zerker#-installing-tab- (opens new window)

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Quick start

Import the package

import 'package:zerker/zerker.dart';

Useage

Create a zerker widget

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
        appBar: AppBar(
          title: Text(widget.title),
        ),
        body: Center(
          child: Zerker(app: MyZKApp(), clip: true, interactive: true, width: 350, height: 350),
        ));
  }
}

Create your Zerker class inherited from ZKApp

class MyZKApp extends ZKApp {

  @override
  init() {
    super.init();
    /// init zerker scene
  }

  @override
  update(int time) {
    super.update(time);
  }
}

Initialize the scene and create elements in the init function

/// Create a zerker sprite
ZKSprite bigboy = ZKSprite(key: "bigboy")
  ..position.x = size.width / 2
  ..position.y = size.height / 2
  ..animator.make("front", [0, 1, 2, 3, 4])
  ..animator.make("left", ['5-9'])
  ..animator.make("after", ['10-14'])
  ..animator.make("right", ['15-19'])
  ..onTapDown = (event) {
    bigboy.animator.play("right", 8, true);
   };
   
stage.addChild(bigboy);

/// Create a zerker text
ZKText text = ZKText()
  ..setPosition(100, 100)
  ..text = "hello world"
  ..setStyle(color: Colors.blueGrey, backgroundColor: Colors.red[50]);
  
stage.addChild(_text);