{
  "init":
  {
    "ball":
    {
      "view": "ball", "class": "MovableCircle", "isMovable": true,
      "r":      15,
      "x":     300,
      "y":     200,
      "vx":    { "@@min": 150, "@@max": 300, "@@positive": 0.5 },
      "vy":    { "@@min": 150, "@@max": 300, "@@positive": 0.5 }
    }
  },

  "model":
  {
    "stage":
    { "class": "ImmovableStage", "isMovable": false,
      "width":  600,
      "height": 400
    },

    "ball":
    { "view": "ball", "class": "MovableCircle", "isMovable": true,
      "r":     15,
      "x":    300,
      "y":    200,
      "vx":   { "@min": 150, "@max": 300, "@positive": 0.5 },
      "vy":   { "@min": 150, "@max": 300, "@positive": 0.5 }
    },

    "paddle1":
    { "view": "paddle", "class": "MovablePaddle", "isMovable": true,
      "x":          5,
      "y":        200,
      "width":     10,
      "height":    30,
      "xAnchor":  0.0,
      "yAnchor":  0.5,

      "vyMoving": 150,
      "ayMoving": 1000,

      "friction": 0.3
    },

    "paddle2":
    { "view": "paddle", "class": "MovablePaddle", "isMovable": true,
      "x":        595,
      "y":        200,
      "width":     10,
      "height":    30,
      "xAnchor":  1.0,
      "yAnchor":  0.5,

      "vyMoving": 150,
      "ayMoving": 1000,

      "friction": 0.3
    },

    "counter1":
    { "view": "text", "class": "ImmovableText",
      "x":    20,
      "y":    20,
      "text":  0
    },

    "counter2":
    { "view": "text", "class": "ImmovableText",
      "x":   320,
      "y":    20,
      "text":  0
    }
   },

  "view":
  {
    "ball":
    { "class":       "ViewGraphicsCircle",
      "border":      0,
      "borderColor": { "@color": "#888888" },
      "color":       { "@color": "#FFAA00" }
    },

    "paddle":
    { "class":  "ViewGraphicsRectangle",
      "border": 0,
      "color":  { "@color": "#999999" }
    },

    "text":
    { "class":      "ViewText",
      "fontFamily": ["Verdana", "Helvetica", "sans-serif"],
      "fontSize":   "20px"
    }
  },

  "control":
  {
    "paddle1":
    { "control": "controlPaddle",
      "model":   "paddle1",
      "up":      {"key": "W", "keyCode": 87},
      "down":    {"key": "X", "keyCode": 88}
    },

    "paddle2":
    { "control": "controlPaddle",
      "model":   "paddle2",
      "up":      {"key": "ArrowUp",   "keyCode": 38},
      "down":    {"key": "ArrowDown", "keyCode": 40}
    }
  }
}