def calculate_y( self, dt ):
y = self.owner.bottom
self.owner.bottom = physics.position( y, self.vy, self.ay, dt )
self.vy = physics.velocity( self.vy, self.ay, dt )
def calculate_x( self, dt ):
self.owner.x = physics.position( self.owner.x, self.vx, self.ax, dt )
self.vx = physics.velocity( self.vx, self.ax, dt )
