{ "init":
  { "pixiImages":
    [ "imgBackground", "imgHens" ]
  },
  
  "model":
  { "stage":
    { "x":      0,
      "y":      0,
      "width":  "@width",
      "height": "@height"
    },

    "birds":
    { "number": { "@min": 15, "@max": 25 } },
  
    "bird":
    { "r":  { "@min": 25, "@max": 50 },
      "x":  { "@min": "@xMin", "@max": "@xMax" },
      "y":  { "@min": "@yMin", "@max": "@yMax" },
      "vx": { "@min": 100, "@max": 300, "@positive": 0.5 },
      "vy": { "@min": 100, "@max": 200, "@positive": 0.5 }
    }
  },

  "view":
  { "stage":
    { "image": "imgBackground" },
  
    "bird":
    { "images":         [ "imgHen01", "imgHen02", "imgHen03", "imgHen04" ],
      "animationSpeed": { "@min": 0.05, "@max": 0.15 },
      "interactive":    true,
      "hitArea":        [ -35, -10  , -29, -24  , -21, -32  , -13, -35  ,   2, -36  ,
                           10, -32  ,  19, -21  ,  23, -21  ,  32, -15  ,  35,  -3  ,
                           24,   4  ,  24,  10  ,  18,  24  ,  10,  32  ,   2,  35  ,
                          -13,  36  , -21,  32  , -29,  24  , -35,  10
                        ]
  
          }
  }
}