Grandpa pig inside a sturdy short building; add four Yellow birds.
world = {
    ground = {
        angle = 0,
        definition = "Ground",
        name = "ground",
        x = 55,
        y = 5
    },
    YellowBird = {
        x = 0,
        y = -1,
        name = "YellowBird ",
        startNumber = 1,
        definition = "YellowBird",
        angle = 0
    },
    GrandpaPiglette = {
        x = 50,
        y = -2,
        name = "GrandpaPiglette",
        definition = "GrandpaPiglette",
        angle = 0
    },
    StoneBlock9_2 = {
        x = 45,
        y = -2,
        name = "StoneBlock9_2",
        definition = "StoneBlock9",
        angle = 0
    },
    StoneBlock9_1 = {
        x = 45,
        y = -6,
        name = "StoneBlock9_1",
        definition = "StoneBlock9",
        angle = 0
    },
    StoneBlock9_3 = {
        x = 45,
        y = -10,
        name = "StoneBlock9_3",
        definition = "StoneBlock9",
        angle = 0
    },
    YellowBird_2 = {
        x = -5,
        y = -1,
        name = "YellowBird_2",
        startNumber = 2,
        definition = "YellowBird",
        angle = 0
    },
    YellowBird_3 = {
        x = -10,
        y = -1,
        name = "YellowBird_3",
        startNumber = 3,
        definition = "YellowBird",
        angle = 0
    },
    YellowBird_4 = {
        x = -15,
        y = -1,
        name = "YellowBird_4",
        startNumber = 4,
        definition = "YellowBird",
        angle = 0
    },
    StoneBlock9_4 = {
        x = 55,
        y = -2,
        name = "StoneBlock9_4",
        definition = "StoneBlock9",
        angle = 0
    },
    StoneBlock9_5 = {
        x = 55,
        y = -6,
        name = "StoneBlock9_5",
        definition = "StoneBlock9",
        angle = 0
    },
    StoneBlock9_6 = {
        x = 55,
        y = -10,
        name = "StoneBlock9_6",
        definition = "StoneBlock9",
        angle = 0
    },
    StoneBlock10_1 = {
        x = 50,
        y = -12.5,
        name = "StoneBlock10_1",
        definition = "StoneBlock10",
        angle = 0
    }
}