guide/animation.html

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    <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></nav>  <ul class="sidebar-links"><li><section class="sidebar-group depth-0"><p class="sidebar-heading open"><span>Guide</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/zerkerdocs/guide/" aria-current="page" class="sidebar-link">Introduction</a></li><li><a href="/zerkerdocs/guide/tutorial.html" class="sidebar-link">Tutorial</a></li><li><a href="/zerkerdocs/guide/animation.html" aria-current="page" class="active sidebar-link">Animation</a><ul class="sidebar-sub-headers"><li class="sidebar-sub-header"><a href="/zerkerdocs/guide/animation.html#about-zktween" class="sidebar-link">About ZKTween</a></li><li class="sidebar-sub-header"><a href="/zerkerdocs/guide/animation.html#scene-transition-effect" class="sidebar-link">Scene transition effect</a></li><li class="sidebar-sub-header"><a href="/zerkerdocs/guide/animation.html#sequence-frame-animation" class="sidebar-link">Sequence frame animation</a></li><li class="sidebar-sub-header"><a href="/zerkerdocs/guide/animation.html#making-atlas-and-spritesheet" class="sidebar-link">Making atlas and spritesheet</a></li></ul></li><li><a href="/zerkerdocs/guide/others.html" class="sidebar-link">Others</a></li></ul></section></li><li><section class="sidebar-group depth-0"><p class="sidebar-heading"><span>QA</span> <!----></p> <ul class="sidebar-links sidebar-group-items"><li><a href="/zerkerdocs/guide/qa.html" class="sidebar-link">QA</a></li></ul></section></li></ul> </aside> <main class="page"> <div class="theme-default-content content__default"><h1 id="animation"><a href="#animation" class="header-anchor">#</a> Animation</h1> <p>An application or game is of course inseparable from a variety of animation effects. You can easily achieve many cool effects in zerker.</p> <p>Use ZKTween to create easing animations such as displacement and zoom.
Use Animator to precisely control sequence frame animations and implement sprite animations.</p> <img src="/zerkerdocs/images/ball.png" alt=""> <h2 id="about-zktween"><a href="#about-zktween" class="header-anchor">#</a> About ZKTween</h2> <p>ZKTween is a simple and lightweight animation tool. See the documentation for it <a href="/zerkerdocs/api/tween.html#zktween">ZKTween Docs</a>.</p> <h3 id="features"><a href="#features" class="header-anchor">#</a> Features</h3> <ul><li>Does one thing and one thing only: tween properties</li> <li>Very simple to use, but it can achieve a lot of effects</li> <li>Easing functions are reusable outside of Tween.</li></ul> <h3 id="about-ease-function"><a href="#about-ease-function" class="header-anchor">#</a> About ease function</h3> <img src="/zerkerdocs/images/ease.png" alt=""> <h3 id="useage"><a href="#useage" class="header-anchor">#</a> Useage</h3> <h4 id="zktween-has-two-ways-of-using"><a href="#zktween-has-two-ways-of-using" class="header-anchor">#</a> ZKTween has two ways of using</h4> <ul><li>control position</li></ul> <div class="language-dart extra-class"><pre class="language-dart"><code><span class="token class-name">ZKTween</span><span class="token punctuation">(</span>text<span class="token punctuation">.</span>position<span class="token punctuation">)</span>
	<span class="token punctuation">.</span><span class="token function">to</span><span class="token punctuation">(</span><span class="token punctuation">{</span><span class="token string-literal"><span class="token string">&quot;x&quot;</span></span><span class="token punctuation">:</span> event<span class="token punctuation">.</span>dx<span class="token punctuation">,</span> <span class="token string-literal"><span class="token string">&quot;y&quot;</span></span><span class="token punctuation">:</span> event<span class="token punctuation">.</span>dy<span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token number">2000</span><span class="token punctuation">)</span>
    <span class="token punctuation">.</span><span class="token function">easing</span><span class="token punctuation">(</span><span class="token class-name">Ease</span><span class="token punctuation">.</span>elastic<span class="token punctuation">.</span>easeOut<span class="token punctuation">)</span>
    <span class="token punctuation">.</span><span class="token function">onUpdate</span><span class="token punctuation">(</span><span class="token punctuation">(</span>obj<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    	otherNode<span class="token punctuation">.</span>rotation<span class="token operator">++</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span><span class="token punctuation">)</span>
    <span class="token punctuation">.</span><span class="token function">start</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre></div><ul><li>control Node</li></ul> <div class="language-dart extra-class"><pre class="language-dart"><code><span class="token class-name">ZKTween</span><span class="token punctuation">(</span>sprite<span class="token punctuation">)</span>
	<span class="token punctuation">.</span><span class="token function">to</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
    <span class="token string-literal"><span class="token string">&quot;x&quot;</span></span><span class="token punctuation">:</span> event<span class="token punctuation">.</span>dx <span class="token operator">+</span> <span class="token number">100</span><span class="token punctuation">,</span>
    <span class="token string-literal"><span class="token string">&quot;y&quot;</span></span><span class="token punctuation">:</span> event<span class="token punctuation">.</span>dy <span class="token operator">+</span> <span class="token number">100</span><span class="token punctuation">,</span>
    <span class="token string-literal"><span class="token string">&quot;scaleX&quot;</span></span><span class="token punctuation">:</span> <span class="token class-name">Random</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">nextDouble</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">*</span> <span class="token number">2</span><span class="token punctuation">,</span>
    <span class="token string-literal"><span class="token string">&quot;scaleY&quot;</span></span><span class="token punctuation">:</span> <span class="token class-name">Random</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">nextDouble</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">*</span> <span class="token number">2</span>
    <span class="token punctuation">}</span><span class="token punctuation">,</span> <span class="token number">1000</span><span class="token punctuation">)</span>
    <span class="token punctuation">.</span><span class="token function">easing</span><span class="token punctuation">(</span><span class="token class-name">Ease</span><span class="token punctuation">.</span>back<span class="token punctuation">.</span>easeInOut<span class="token punctuation">)</span>
    <span class="token punctuation">.</span><span class="token function">onComplete</span><span class="token punctuation">(</span><span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">)</span>
    <span class="token punctuation">.</span><span class="token function">start</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre></div><h3 id="thanks"><a href="#thanks" class="header-anchor">#</a> Thanks</h3> <p>ZKTween refers to the implementation code of <a href="https://github.com/tweenjs/tween.js" target="_blank" rel="noopener noreferrer">tween.js<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a>. They are really great. I want to pay tribute to the original author!</p> <h3 id="a-standalone-version"><a href="#a-standalone-version" class="header-anchor">#</a> A standalone version</h3> <p>A separate version is located <a href="https://github.com/flutterkit/tweener" target="_blank" rel="noopener noreferrer">https://github.com/flutterkit/tweener<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a>, you can use it to manipulate more elements (outside zerker), it is really easy to use.</p> <hr> <h2 id="scene-transition-effect"><a href="#scene-transition-effect" class="header-anchor">#</a> Scene transition effect</h2> <p>The <code>ZKScene</code> inherits from the <code>ZKContainer</code> and it provides several transition effects. It adapts to several elements moving together into (or disappearing) the scene.</p> <p>It can be applied in games, level switching or switching between two game sets.</p> <div class="language-dart extra-class"><pre class="language-dart"><code><span class="token class-name">ZKScene</span> scene <span class="token operator">=</span> <span class="token class-name">ZKScene</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
scene<span class="token punctuation">.</span><span class="token function">addChild</span><span class="token punctuation">(</span>node1<span class="token punctuation">)</span><span class="token punctuation">;</span>
scene<span class="token punctuation">.</span><span class="token function">addChild</span><span class="token punctuation">(</span>node2<span class="token punctuation">)</span><span class="token punctuation">;</span>
scene<span class="token punctuation">.</span><span class="token function">addChild</span><span class="token punctuation">(</span>image1<span class="token punctuation">)</span><span class="token punctuation">;</span>
scene<span class="token punctuation">.</span><span class="token function">addChild</span><span class="token punctuation">(</span>sprite1<span class="token punctuation">)</span><span class="token punctuation">;</span>
scene<span class="token punctuation">.</span><span class="token function">addChild</span><span class="token punctuation">(</span>sprite2<span class="token punctuation">)</span><span class="token punctuation">;</span>
stage<span class="token punctuation">.</span><span class="token function">addChild</span><span class="token punctuation">(</span>scene<span class="token punctuation">)</span><span class="token punctuation">;</span>

scene<span class="token punctuation">.</span><span class="token function">moveIn</span><span class="token punctuation">(</span>time<span class="token punctuation">:</span> <span class="token number">5000</span><span class="token punctuation">,</span> x<span class="token punctuation">:</span> <span class="token number">300</span><span class="token punctuation">)</span><span class="token punctuation">;</span>

<span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span>
<span class="token keyword">if</span><span class="token punctuation">(</span><span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
    scene<span class="token punctuation">.</span><span class="token function">fadeOut</span><span class="token punctuation">(</span><span class="token number">5000</span><span class="token punctuation">,</span> <span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
        <span class="token function">print</span><span class="token punctuation">(</span><span class="token string-literal"><span class="token string">&quot;GAME OVER!&quot;</span></span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>
</code></pre></div><hr> <h2 id="sequence-frame-animation"><a href="#sequence-frame-animation" class="header-anchor">#</a> Sequence frame animation</h2> <p>Sequence frame animation can achieve various common effects such as character walking, enemy death, explosion, etc.</p> <p>In Zerker you can use Animator to control sequence frame animation.</p> <h3 id="about-texture"><a href="#about-texture" class="header-anchor">#</a> About Texture</h3> <p>Sequence frame animation relies on textures. Currently, Zerker supports two general animation class maps (<a href="https://en.wikipedia.org/wiki/Texture_atlas" target="_blank" rel="noopener noreferrer">atlas<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a>, <a href="https://www.codeandweb.com/what-is-a-sprite-sheet" target="_blank" rel="noopener noreferrer">spritesheet<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a>).
You can use the tools provided in another tutorial to create two types of textures.</p> <img src="/zerkerdocs/images/altas.webp" alt=""> <div class="language-json extra-class"><pre class="language-json"><code><span class="token property">&quot;Apple.png&quot;</span><span class="token operator">:</span> <span class="token punctuation">{</span>
    <span class="token property">&quot;frame&quot;</span><span class="token operator">:</span> <span class="token punctuation">{</span><span class="token property">&quot;x&quot;</span><span class="token operator">:</span><span class="token number">292</span><span class="token punctuation">,</span><span class="token property">&quot;y&quot;</span><span class="token operator">:</span><span class="token number">304</span><span class="token punctuation">,</span><span class="token property">&quot;w&quot;</span><span class="token operator">:</span><span class="token number">60</span><span class="token punctuation">,</span><span class="token property">&quot;h&quot;</span><span class="token operator">:</span><span class="token number">61</span><span class="token punctuation">}</span><span class="token punctuation">,</span>
    <span class="token property">&quot;rotated&quot;</span><span class="token operator">:</span> <span class="token boolean">false</span><span class="token punctuation">,</span>
    <span class="token property">&quot;trimmed&quot;</span><span class="token operator">:</span> <span class="token boolean">true</span><span class="token punctuation">,</span>
    <span class="token property">&quot;spriteSourceSize&quot;</span><span class="token operator">:</span> <span class="token punctuation">{</span><span class="token property">&quot;x&quot;</span><span class="token operator">:</span><span class="token number">23</span><span class="token punctuation">,</span><span class="token property">&quot;y&quot;</span><span class="token operator">:</span><span class="token number">29</span><span class="token punctuation">,</span><span class="token property">&quot;w&quot;</span><span class="token operator">:</span><span class="token number">60</span><span class="token punctuation">,</span><span class="token property">&quot;h&quot;</span><span class="token operator">:</span><span class="token number">61</span><span class="token punctuation">}</span><span class="token punctuation">,</span>
    <span class="token property">&quot;sourceSize&quot;</span><span class="token operator">:</span> <span class="token punctuation">{</span><span class="token property">&quot;w&quot;</span><span class="token operator">:</span><span class="token number">90</span><span class="token punctuation">,</span><span class="token property">&quot;h&quot;</span><span class="token operator">:</span><span class="token number">90</span><span class="token punctuation">}</span><span class="token punctuation">,</span>
    <span class="token property">&quot;pivot&quot;</span><span class="token operator">:</span> <span class="token punctuation">{</span><span class="token property">&quot;x&quot;</span><span class="token operator">:</span><span class="token number">0.5</span><span class="token punctuation">,</span><span class="token property">&quot;y&quot;</span><span class="token operator">:</span><span class="token number">0.5</span><span class="token punctuation">}</span>
<span class="token punctuation">}</span><span class="token punctuation">,</span>
<span class="token property">&quot;Banana.png&quot;</span><span class="token operator">:</span> <span class="token punctuation">{</span>
    <span class="token property">&quot;frame&quot;</span><span class="token operator">:</span> <span class="token punctuation">{</span><span class="token property">&quot;x&quot;</span><span class="token operator">:</span><span class="token number">299</span><span class="token punctuation">,</span><span class="token property">&quot;y&quot;</span><span class="token operator">:</span><span class="token number">192</span><span class="token punctuation">,</span><span class="token property">&quot;w&quot;</span><span class="token operator">:</span><span class="token number">99</span><span class="token punctuation">,</span><span class="token property">&quot;h&quot;</span><span class="token operator">:</span><span class="token number">113</span><span class="token punctuation">}</span><span class="token punctuation">,</span>
    <span class="token property">&quot;rotated&quot;</span><span class="token operator">:</span> <span class="token boolean">false</span><span class="token punctuation">,</span>
    <span class="token property">&quot;trimmed&quot;</span><span class="token operator">:</span> <span class="token boolean">true</span><span class="token punctuation">,</span>
    <span class="token property">&quot;spriteSourceSize&quot;</span><span class="token operator">:</span> <span class="token punctuation">{</span><span class="token property">&quot;x&quot;</span><span class="token operator">:</span><span class="token number">14</span><span class="token punctuation">,</span><span class="token property">&quot;y&quot;</span><span class="token operator">:</span><span class="token number">15</span><span class="token punctuation">,</span><span class="token property">&quot;w&quot;</span><span class="token operator">:</span><span class="token number">99</span><span class="token punctuation">,</span><span class="token property">&quot;h&quot;</span><span class="token operator">:</span><span class="token number">113</span><span class="token punctuation">}</span><span class="token punctuation">,</span>
    <span class="token property">&quot;sourceSize&quot;</span><span class="token operator">:</span> <span class="token punctuation">{</span><span class="token property">&quot;w&quot;</span><span class="token operator">:</span><span class="token number">128</span><span class="token punctuation">,</span><span class="token property">&quot;h&quot;</span><span class="token operator">:</span><span class="token number">128</span><span class="token punctuation">}</span><span class="token punctuation">,</span>
    <span class="token property">&quot;pivot&quot;</span><span class="token operator">:</span> <span class="token punctuation">{</span><span class="token property">&quot;x&quot;</span><span class="token operator">:</span><span class="token number">0.5</span><span class="token punctuation">,</span><span class="token property">&quot;y&quot;</span><span class="token operator">:</span><span class="token number">0.5</span><span class="token punctuation">}</span>
<span class="token punctuation">}</span><span class="token punctuation">,</span>
...
</code></pre></div><h3 id="make-animations-with-spritesheet"><a href="#make-animations-with-spritesheet" class="header-anchor">#</a> Make animations with spritesheet</h3> <p>Use spritesheet to specify the display width and height (different from atlas).
Specify the frame to use index numbers or shorthand.</p> <div class="language-dart extra-class"><pre class="language-dart"><code><span class="token class-name">List</span><span class="token generics"><span class="token punctuation">&lt;</span><span class="token class-name">String</span><span class="token punctuation">&gt;</span></span> list <span class="token operator">=</span> <span class="token punctuation">[</span><span class="token string-literal"><span class="token string">&quot;front&quot;</span></span><span class="token punctuation">,</span> <span class="token string-literal"><span class="token string">&quot;left&quot;</span></span><span class="token punctuation">,</span> <span class="token string-literal"><span class="token string">&quot;after&quot;</span></span><span class="token punctuation">,</span> <span class="token string-literal"><span class="token string">&quot;right&quot;</span></span><span class="token punctuation">]</span><span class="token punctuation">;</span>
<span class="token class-name">ZKSprite</span> sprite <span class="token operator">=</span> <span class="token class-name">ZKSprite</span><span class="token punctuation">(</span>image<span class="token punctuation">:</span> <span class="token string-literal"><span class="token string">&quot;assets/hum.png&quot;</span></span><span class="token punctuation">,</span> type<span class="token punctuation">:</span> <span class="token string-literal"><span class="token string">&quot;spritesheet&quot;</span></span><span class="token punctuation">,</span> width<span class="token punctuation">:</span> <span class="token number">32</span><span class="token punctuation">,</span> height<span class="token punctuation">:</span> <span class="token number">32</span><span class="token punctuation">)</span>
  <span class="token punctuation">.</span><span class="token punctuation">.</span>animator<span class="token punctuation">.</span><span class="token function">make</span><span class="token punctuation">(</span>list<span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">]</span><span class="token punctuation">,</span> <span class="token punctuation">[</span><span class="token number">0</span><span class="token punctuation">,</span> <span class="token number">1</span><span class="token punctuation">,</span> <span class="token number">2</span><span class="token punctuation">,</span> <span class="token number">3</span><span class="token punctuation">,</span> <span class="token number">4</span><span class="token punctuation">]</span><span class="token punctuation">)</span>
  <span class="token punctuation">.</span><span class="token punctuation">.</span>animator<span class="token punctuation">.</span><span class="token function">make</span><span class="token punctuation">(</span>list<span class="token punctuation">[</span><span class="token number">1</span><span class="token punctuation">]</span><span class="token punctuation">,</span> <span class="token punctuation">[</span><span class="token string-literal"><span class="token string">'5-9'</span></span><span class="token punctuation">]</span><span class="token punctuation">)</span>
  <span class="token punctuation">.</span><span class="token punctuation">.</span>animator<span class="token punctuation">.</span><span class="token function">make</span><span class="token punctuation">(</span>list<span class="token punctuation">[</span><span class="token number">2</span><span class="token punctuation">]</span><span class="token punctuation">,</span> <span class="token punctuation">[</span><span class="token string-literal"><span class="token string">'10-14'</span></span><span class="token punctuation">]</span><span class="token punctuation">)</span>
  <span class="token punctuation">.</span><span class="token punctuation">.</span>animator<span class="token punctuation">.</span><span class="token function">make</span><span class="token punctuation">(</span>list<span class="token punctuation">[</span><span class="token number">3</span><span class="token punctuation">]</span><span class="token punctuation">,</span> <span class="token punctuation">[</span><span class="token string-literal"><span class="token string">'15-19'</span></span><span class="token punctuation">]</span><span class="token punctuation">)</span>
  <span class="token punctuation">.</span><span class="token punctuation">.</span>onTapDown <span class="token operator">=</span> <span class="token punctuation">(</span>event<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    sprite<span class="token punctuation">.</span>animator<span class="token punctuation">.</span><span class="token function">play</span><span class="token punctuation">(</span>list<span class="token punctuation">[</span><span class="token punctuation">(</span>index<span class="token operator">++</span><span class="token punctuation">)</span> <span class="token operator">%</span> <span class="token number">4</span><span class="token punctuation">]</span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token boolean">true</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
  <span class="token punctuation">}</span><span class="token punctuation">;</span>
</code></pre></div><h3 id="make-animations-with-atlas"><a href="#make-animations-with-atlas" class="header-anchor">#</a> Make animations with atlas</h3> <p>Atlas animation, set the frame can be passed to keyname filename or index</p> <div class="language-dart extra-class"><pre class="language-dart"><code><span class="token class-name">ZKSprite</span> sprite <span class="token operator">=</span> <span class="token class-name">ZKSprite</span><span class="token punctuation">(</span>key<span class="token punctuation">:</span> <span class="token string-literal"><span class="token string">&quot;dino&quot;</span></span><span class="token punctuation">)</span>
    <span class="token punctuation">.</span><span class="token punctuation">.</span>anchor<span class="token punctuation">.</span>x <span class="token operator">=</span> <span class="token number">0.1</span>
    <span class="token punctuation">.</span><span class="token punctuation">.</span>anchor<span class="token punctuation">.</span>y <span class="token operator">=</span> <span class="token number">0.9</span>
    <span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token function">setScale</span><span class="token punctuation">(</span><span class="token number">.6</span><span class="token punctuation">)</span>
    <span class="token punctuation">.</span><span class="token punctuation">.</span>animator<span class="token punctuation">.</span><span class="token function">make</span><span class="token punctuation">(</span><span class="token string-literal"><span class="token string">&quot;run&quot;</span></span><span class="token punctuation">,</span> <span class="token punctuation">[</span><span class="token string-literal"><span class="token string">&quot;01.png&quot;</span></span><span class="token punctuation">,</span> <span class="token string-literal"><span class="token string">&quot;02.png&quot;</span></span><span class="token punctuation">,</span> <span class="token string-literal"><span class="token string">&quot;03.png&quot;</span></span><span class="token punctuation">,</span> <span class="token string-literal"><span class="token string">&quot;04.png&quot;</span></span><span class="token punctuation">]</span><span class="token punctuation">)</span>
    <span class="token punctuation">.</span><span class="token punctuation">.</span>animator<span class="token punctuation">.</span><span class="token function">make</span><span class="token punctuation">(</span><span class="token string-literal"><span class="token string">&quot;jump&quot;</span></span><span class="token punctuation">,</span> <span class="token punctuation">[</span><span class="token string-literal"><span class="token string">&quot;05.png&quot;</span></span><span class="token punctuation">,</span> <span class="token string-literal"><span class="token string">&quot;06.png&quot;</span></span><span class="token punctuation">,</span> <span class="token string-literal"><span class="token string">&quot;07.png&quot;</span></span><span class="token punctuation">]</span><span class="token punctuation">,</span> <span class="token number">10</span><span class="token punctuation">,</span> <span class="token boolean">true</span><span class="token punctuation">)</span>

    sprite<span class="token punctuation">.</span>animator<span class="token punctuation">.</span><span class="token function">play</span><span class="token punctuation">(</span><span class="token string-literal"><span class="token string">&quot;run&quot;</span></span><span class="token punctuation">,</span> <span class="token number">8</span><span class="token punctuation">,</span> <span class="token boolean">true</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
    sprite<span class="token punctuation">.</span>animator<span class="token punctuation">.</span><span class="token function">play</span><span class="token punctuation">(</span><span class="token string-literal"><span class="token string">&quot;jump&quot;</span></span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre></div><h2 id="making-atlas-and-spritesheet"><a href="#making-atlas-and-spritesheet" class="header-anchor">#</a> Making atlas and spritesheet</h2> <p>It is recommended that you use the following tools to make two kinds of materials.</p> <ul><li><a href="http://free-tex-packer.com/" target="_blank" rel="noopener noreferrer">http://free-tex-packer.com/<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></li> <li><a href="https://www.codeandweb.com/free-sprite-sheet-packer" target="_blank" rel="noopener noreferrer">https://www.codeandweb.com/free-sprite-sheet-packer<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></li> <li><a href="https://amakaseev.github.io/sprite-sheet-packer/" target="_blank" rel="noopener noreferrer">https://amakaseev.github.io/sprite-sheet-packer/<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></li> <li><a href="http://www.spriteland.com/apps/spritemaker.html" target="_blank" rel="noopener noreferrer">http://www.spriteland.com/apps/spritemaker.html<span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></a></li></ul> <img src="/zerkerdocs/images/packer.jpeg" alt=""> <img src="/zerkerdocs/images/ftp.png" alt=""> <h3 id="note"><a href="#note" class="header-anchor">#</a> Note</h3> <p>When exporting, be sure to set <code>JSON(hash)</code> or <code>JSON(array)</code>. Currently only supports these two formats.</p> <img src="/zerkerdocs/images/out.png" alt=""></div> <footer class="page-edit"><div class="edit-link"><a href="https://github.com/flutterkit/zerker/edit/master/docs/guide/animation.md" target="_blank" rel="noopener noreferrer">Edit this page on GitHub</a> <span><svg xmlns="http://www.w3.org/2000/svg" aria-hidden="true" focusable="false" x="0px" y="0px" viewBox="0 0 100 100" width="15" height="15" class="icon outbound"><path fill="currentColor" d="M18.8,85.1h56l0,0c2.2,0,4-1.8,4-4v-32h-8v28h-48v-48h28v-8h-32l0,0c-2.2,0-4,1.8-4,4v56C14.8,83.3,16.6,85.1,18.8,85.1z"></path> <polygon fill="currentColor" points="45.7,48.7 51.3,54.3 77.2,28.5 77.2,37.2 85.2,37.2 85.2,14.9 62.8,14.9 62.8,22.9 71.5,22.9"></polygon></svg> <span class="sr-only">(opens new window)</span></span></div> <div class="last-updated"><span class="prefix">Last Updated:</span> <span class="time">8/26/2019, 10:06:59 PM</span></div></footer> <div class="page-nav"><p class="inner"><span class="prev">
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