one yellow birds versus a small pig sitting on a stone.
world = {
  ground = {
    angle = 0,
    definition = "Ground",
    name = "ground",
    x = 55,
    y = 5
  },
  YellowBird = {
    x = -5,
    y = -1,
    name = "YellowBird",
    definition = "YellowBird",
    startNumber = 1
  },
  StoneBlock3_1 = {
    x = 60,
    y = -1,
    name = "StoneBlock3_1",
    definition = "StoneBlock3",
    angle = 0
  },
  SmallPiglette_1 = {
    x = 60,
    y = -3,
    name = "SmallPiglette_1",
    definition = "SmallPiglette",
    angle = 0
  }
}
