def smoothChange(duration, from, to)
		timeLine = Qt::TimeLine.new(duration, self)
		timeLine.setFrameRange(from, to)
		timeLine.curveShape = Qt::TimeLine::EaseInCurve
		connect(timeLine, SIGNAL('frameChanged(int)')) { |i| yield i }
		timeLine.start
	end

	def mousePressEvent(event)
		case event.button
			when Qt::LeftButton then @bullets.push Bullet.new(@position)
			when Qt::MidButton
				smoothChange(500, 90, 45) { |i| self.fov = i }
		end
	end