请问怎么让标题图片的一边动起来？ - Project1

#==============================================================================
# ■ Sprite_Animation
#------------------------------------------------------------------------------
# 　循环动画（By 禾西）
#==============================================================================
class Sprite_Animation < RPG::Sprite
#--------------------------------------------------------------------------
# ● 取得动画ID
#--------------------------------------------------------------------------
attr_accessor :id
attr_accessor :pause
attr_accessor :visible
#--------------------------------------------------------------------------
# ● 初始化物件
# viewport : 显示连接埠
#--------------------------------------------------------------------------
def initialize(x=0,y=0,z=1000)
@viewport = Viewport.new(0, 0, 640, 480)
super(@viewport)
self.id = 0
self.pause = false
self.visible = true
# 设定活动区块的座标
self.x = x
self.y = y
self.z = z
end
#--------------------------------------------------------------------------
# ● 更新画面
#--------------------------------------------------------------------------
def update
return unless self.id > 0
if self.visible
return if self.pause
animation = $data_animations[self.id]
loop_animation(animation) unless animation == nil
else
dispose_loop_animation
end
super
end
#--------------------------------------------------------------------------
# ● 释放
#--------------------------------------------------------------------------
def dispose
(self.bitmap.dispose) unless (self.bitmap == nil)
@viewport.dispose
super
end
end

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