Function DynamicBitmapText

BitmapText objects work by taking a texture file and an XML or JSON file that describes the font structure.

During rendering for each letter of the text is rendered to the display, proportionally spaced out and aligned to match the font structure.

Dynamic Bitmap Text objects are different from Static Bitmap Text in that they invoke a callback for each letter being rendered during the render pass. This callback allows you to manipulate the properties of each letter being rendered, such as its position, scale or tint, allowing you to create interesting effects like jiggling text, which can't be done with Static text. This means that Dynamic Text takes more processing time, so only use them if you require the callback ability they have.

BitmapText objects are less flexible than Text objects, in that they have less features such as shadows, fills and the ability to use Web Fonts, however you trade this flexibility for rendering speed. You can also create visually compelling BitmapTexts by processing the font texture in an image editor, applying fills and any other effects required.

To create multi-line text insert \r, \n or \r\n escape codes into the text string.

To create a BitmapText data files you need a 3rd party app such as:

BMFont (Windows, free): http://www.angelcode.com/products/bmfont/ Glyph Designer (OS X, commercial): http://www.71squared.com/en/glyphdesigner Littera (Web-based, free): http://kvazars.com/littera/

For most use cases it is recommended to use XML. If you wish to use JSON, the formatting should be equal to the result of converting a valid XML file through the popular X2JS library. An online tool for conversion can be found here: http://codebeautify.org/xmltojson

Properties

contextTypes? defaultProps? displayName? propTypes?

Properties

OptionalcontextTypes

contextTypes?: ValidationMap<any>

Deprecated

Lets you specify which legacy context is consumed by this component.

See

Legacy React Docs

OptionaldefaultProps

defaultProps?: Partial<GameObjectProps<DynamicBitmapText>>

Used to define default values for the props accepted by the component.

See

React Docs

Example

type Props = { name?: string }

const MyComponent: FC<Props> = (props) => {
  return <div>{props.name}</div>
}

MyComponent.defaultProps = {
  name: 'John Doe'
}

Deprecated

Use values for destructuring assignments instead.

OptionaldisplayName

displayName?: string

Used in debugging messages. You might want to set it explicitly if you want to display a different name for debugging purposes.

See

Legacy React Docs

Example


const MyComponent: FC = () => {
  return <div>Hello!</div>
}

MyComponent.displayName = 'MyAwesomeComponent'

OptionalpropTypes

propTypes?: WeakValidationMap<GameObjectProps<DynamicBitmapText>>

Used to declare the types of the props accepted by the component. These types will be checked during rendering and in development only.

We recommend using TypeScript instead of checking prop types at runtime.

See

React Docs

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Properties