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<title>Egret</title>
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-ms-touch-action: none;
background: #888888;
padding: 0;
border: 0;
margin: 0;
height: 100%;
}
</style>
</head>
<body>
<div style="margin: auto;width: 100%;height: 100%;" class="egret-player"
data-entry-class="Main"
data-orientation="auto"
data-scale-mode="fixedWidth"
data-frame-rate="30"
data-content-width="640"
data-content-height="1000"
data-show-paint-rect="false"
data-multi-fingered="2"
data-show-fps="false" data-show-log="false"
data-show-fps-style="x:0,y:0,size:12,textColor:0xffffff,bgAlpha:0.9">
</div>
<script>
var loadScript = function (list, callback) {
var loaded = 0;
var loadNext = function () {
loadSingleScript(list[loaded], function () {
loaded++;
if (loaded >= list.length) {
callback();
}
else {
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}
})
};
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};
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s.async = false;
s.src = src;
s.addEventListener('load', function () {
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s.removeEventListener('load', arguments.callee, false);
callback();
}, false);
document.body.appendChild(s);
};
var xhr = new XMLHttpRequest();
xhr.open('GET', './manifest.json?v=' + Math.random(), true);
xhr.addEventListener("load", function () {
var manifest = JSON.parse(xhr.response);
var list = manifest.initial.concat(manifest.game);
loadScript(list, function () {
/**
* {
* "renderMode":, //Engine rendering mode, "canvas" or "webgl"
* "audioType": 0 //Use the audio type, 0: default, 2: web audio, 3: audio
* "antialias": //Whether the anti-aliasing is enabled in WebGL mode, true: on, false: off, defaults to false
* "calculateCanvasScaleFactor": //a function return canvas scale factor
* }
**/
egret.runEgret({ renderMode: "webgl", audioType: 0, calculateCanvasScaleFactor:function(context) {
var backingStore = context.backingStorePixelRatio ||
context.webkitBackingStorePixelRatio ||
context.mozBackingStorePixelRatio ||
context.msBackingStorePixelRatio ||
context.oBackingStorePixelRatio ||
context.backingStorePixelRatio || 1;
return (window.devicePixelRatio || 1) / backingStore;
}});
});
});
xhr.send(null);
</script>
</body>
</html>
在本文中,我们将深入探讨如何使用Egret游戏引擎创建动画式加载场景,特别是基于通用MVC框架的应用。Egret White鹭引擎是一款强大的2D游戏开发工具,它提供了丰富的功能,让开发者能够轻松地创建高质量的HTML5游戏。加载过渡动画在游戏启动时为用户提供平滑的体验,是游戏设计中不可或缺的一部分。 让我们了解Egret的基本概念。Egret的核心是它的渲染引擎,它基于WebGL和Canvas技术,确保了游戏在各种设备上的高性能运行。MVC(Model-View-Controller)是一种软件设计模式,将应用分为三个主要部分:模型、视图和控制器,使得代码结构清晰,易于维护。 在Egret中实现动画式加载场景,我们需要创建一个专门的加载界面,这个界面会展示进度条、加载文本等元素,并随着资源加载的进度进行动态更新。这通常涉及到以下步骤: 1. **创建控制器**:在MVC框架下,控制器负责处理用户交互和数据更新。对于加载场景,控制器会监听资源加载事件,根据加载进度更新界面。 2. **定义模型**:模型部分主要负责资源的加载。Egret的 RES 库提供了一种方便的方式来批量加载资源,如图片、音频、XML等。我们可以使用 `RES.addEventListener` 注册加载完成的回调,然后调用 `RES.loadConfig` 和 `RES.loadGroup` 开始加载。 3. **构建视图**:视图部分则包含了加载界面的所有可视元素,如加载进度条、文本等。我们可以使用Egret的DisplayObject容器,如Sprite或MovieClip,来构建这些元素,并通过控制器更新它们的属性。 4. **动画效果**:为了让加载过程更吸引人,我们可以添加一些动画效果。Egret提供了Tween动画类,可以用来创建平滑的过渡效果。例如,可以使用Tween来改变进度条的宽度或颜色,以反映加载进度。 5. **资源管理**:在所有资源加载完成后,控制器会触发一个事件,此时游戏可以切换到主场景。为了优化内存使用,我们可以使用Egret的Resource释放机制来释放不再需要的加载资源。 6. **性能优化**:在实际开发中,我们还需要关注加载速度和性能。可以通过预加载关键资源,延迟加载非关键资源,或者使用异步加载策略来提高用户体验。 在压缩包中的"EgretGameEngine-1.4"文件可能包含Egret引擎的特定版本,以及相关的示例代码或库。通过查看和学习这些代码,你可以更好地理解上述概念如何在实践中应用。 总结来说,创建Egret的动画式加载场景涉及MVC架构的应用,包括资源加载、界面更新和动画效果。通过合理的代码组织和性能优化,我们可以为用户提供一个流畅且引人入胜的加载体验。对于Egret开发者来说,掌握这一技巧是提升游戏质量的关键一步。
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