import "pixie"

class("Ball").extends(Pixie)

function Ball:init(width, height, color, x, y)
   Ball.super.init(self, width, height, color, x, y)
   self.dirX = -1
   self.dirY = 1
   self.vector = {}
   self.vector.x = -1
   self.vector.y = 1
   self.speed = 3
   return self
end

function Ball:levelUp()
   self.speed += 1
end

function Ball:move()
   -- self:moveBy(self.vector.x * self.speed,
   --             self.vector.y * self.speed)
   self:moveBy(self.dirX * self.speed,
               self.dirY * self.speed)
end

function Ball:setDirection(x, y)
   x = x or self.dirX
   y = y or self.dirY
   self.dirX = x
   self.dirY = y
end

function Ball:_normalizePosition()
   local changeVector = Ball.super._normalizePosition(self)
   if changeVector[1] ~= 0 then
      -- self.vector.x = changeVector[1]
      self.dirX = changeVector[1]
   end
   if changeVector[2] ~= 0 then
      -- self.vector.y = changeVector[2]
      self.dirY = changeVector[2]
   end
end