local ge = require("game")

local Ball = ge.Role:extend()
do
  function Ball:step(t)
    ge.Role.step(self, t)
    if self.position.x < -self.game.size.x/2 then
      self.velocity:multiply(-1, 1)
    end
    if self.position.y < -self.game.size.y/2 then
      self.velocity:multiply(1, 0)
    end
    if self.position.x > self.game.size.x/2 then
      self.velocity:multiply(-1, 1)
    end
    if self.position.y > self.game.size.y/2 then
      self.velocity:multiply(1, -1.1)
      self.game:playsound("ding")
    end
  end
end
return Ball