关于鼠标响应脚本里图片淡入淡出的问题

timcai

如何实现cmd_02图片淡入淡出？请大家指点一下。
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class Game_Picture

def name=(str)
   @name = str
end

end

class Sprite_Picture

alias update_old update
def update
   update_old
   return if @picture_name == "" or @picture_name[/cmd/].nil?
   mx,my = Mouse.get_mouse_pos
   lx = self.x - self.ox
   rx = lx + self.bitmap.width
   ty = self.y - self.oy
   by = ty + self.bitmap.height
   if mx < lx or mx > rx or my < ty or my > by or
     self.bitmap.get_pixel(mx-lx,my-ty).alpha == 0
     @picture.name = @picture.name.split(/_/)[0]+"_"+@picture.name.split(/_/)[1]
     return
   end
   if @picture.name.split(/_/)[2].nil?
     @picture.name = @picture.name + "_02"
   end
   if Input.trigger?(13)
     @picture.name.split(/_/)[0].sub(/cmd([0-9]+)/,"")
     $game_temp.common_event_id = $1.to_i
   end
end
end
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