text: import { Circle } from './Circle.js'
  import Line from './Line.js'
  import { Rectangle } from './Rectangle.js'
  import { Sprite } from './Sprite.js'
  import { Text } from './Text.js'
  import { BitmapText } from './BitmapText.js'
  import { Group } from './Group.js'
  import { BufferedGroup } from './BufferedGroup.js'
  import { SpriteAnimation } from './SpriteAnimation.js'
  import { RoundedRectangle } from './RoundedRectangle.js'
  import { Polygon } from './Polygon.js'
  import { TilingSprite } from './TilingSprite.js'
  
  export class EntityFactory {
    static create (type) {
      const EntityClass = {
        C: Circle,
        R: Rectangle,
        L: Line,
        S: Sprite,
        T: Text,
        X: BitmapText,
        G: Group,
        B: BufferedGroup,
        A: SpriteAnimation,
        K: RoundedRectangle,
        P: Polygon,
        D: TilingSprite
      }[type]
      if (!EntityClass) {
        throw new Error('Exception: entity type not found: ' + type)
      }
      return new EntityClass()
    }
  }
  