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    Crafty.createLayer()

    public void Crafty.createLayer(string name, string type[, object options])
    name

    the name that will refer to the layer

    type

    the type of the draw layer to create ('DOM', 'Canvas', or 'WebGL')

    options

    this will override the default values of each layer

    Creates a new system which implements the specified type of layer. The options (and their default values) are

    {
      xResponse: 1,  // How the layer will pan in response to the viewport x position
      yResponse: 1,  // How the layer will pan in response to the viewport y position
      scaleResponse: 1, // How the layer will scale in response to the viewport scale.  (Layer scale will be scale^scaleResponse.)
      z: 0 // The zIndex of the layer relative to other layers
    }

    Crafty will automatically define three built-in layers: "DefaultDOMLayer", DefaultCanvasLayer", and "DefaultWebGLLayer". They will have z values of 30, 20, and 10 respectively, and will be initialized if a "DOM", "Canvas" or "WebGL" component is used with an entity not attached to any user-specified layer.

    Note: Layers are implemented as systems, so the layer name must be distinct from other systems.

    Note: By default, layers will persist across scene changes. You can manually clean up a layer by removing all it's entities and then destroying it.

    Example

    Crafty.createLayer("MyCanvasLayer", "Canvas")
    Crafty.e("2D, MyCanvasLayer, Color");

    Define a custom canvas layer, then create an entity that uses the custom layer to render.

    Example

    Crafty.createLayer("UILayer", "DOM", {scaleResponse: 0, xResponse: 0, yResponse: 0})
    Crafty.e("2D, UILayer, Text");

    Define a custom DOM layer that will not move with the camera. (Useful for static UI elements!)

    Example

    Crafty.createLayer("MyCanvasLayer", "Canvas");
    Crafty.s("MyCanvasLayer").one("RenderScene", function(){ this.everRendered = true; });

    Create a custom layer, and then bind a method to run the first time it renders.

    Example

    Crafty("MyCanvasLayer").destroy();
    Crafty.s("MyCanvasLayer").destroy();

    For a previously defined "MyCanvasLayer", destroy it and all the entities rendered by it.

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