如何让玩家自由选择是否启用对话框头像？

Ray

萌新第一次用RenPy,想写一个按钮，效果是按下后用户可以自由启用/禁用对话框左侧的头像。

目前已经做出来按钮界面并能加入头像，卡在启用/禁用功能上了……
望大佬们不吝赐教

Ray

[RenPy] 纯文本查看 复制代码

#script.rpy部分
init:
    if not hasattr(persistent, "show_side_image"):
        $ persistent.show == True

define ray = Character("ray",color="#6495ED",window_background="gui/ray_textbox.png",
    image="ray",
    show_side_image=ConditionSwitch(
        "persistent.show", "rayside",
        "not persistent.show", Null()
        )
)

[RenPy] 纯文本查看 复制代码

#screen.rpy部分
text "启用对话框头像":
                        style "system_text_style"

                    imagebutton:
                        align (0.5, 0.5)
                        idle "gui/button/radio_idle.png" at button_fadeinout1
                        selected_hover "gui/button/radio_selectedhover.png"
                        selected_idle "gui/button/radio_selectedidle.png"
                        hover "gui/button/radio_hover.png"
                        activate_sound "audio/click.mp3"
                        hover_sound "audio/remain.mp3"
                        action ToggleVariable("persistent.show")

Ray

[RenPy] 纯文本查看 复制代码

#选项部分
imagebutton:
                        align (0.5, 0.5)
                        idle "gui/button/radio_idle.png" at button_fadeinout1
                        selected_hover "gui/button/radio_selectedhover.png"
                        selected_idle "gui/button/radio_selectedidle.png"
                        hover "gui/button/radio_hover.png"
                        activate_sound "audio/click.mp3"
                        hover_sound "audio/remain.mp3"
                        action SetVariable("show_side_portrait", True)
                    imagebutton:
                        align (0.5, 0.5)
                        idle "gui/button/radio_idle.png" at button_fadeinout1
                        selected_hover "gui/button/radio_selectedhover.png"
                        selected_idle "gui/button/radio_selectedidle.png"
                        hover "gui/button/radio_hover.png"
                        activate_sound "audio/click.mp3"
                        hover_sound "audio/remain.mp3"
                        action SetVariable("show_side_portrait", False)[mw_shl_code=renpy,true]#say界面
screen say(who, what):
    style_prefix "say"

    window:
        id "window"

        if who is not None:

            window:
                id "namebox"
                style "namebox"
                text who id "who"

        if show_side_portrait == True and who in character_images:
            add character_images[who] xalign 0.0 yalign 1.0

        text what id "what"[mw_shl_code=renpy,true]#在script最开始写上：
init python:

    character_images = {
        "ray": "images/ray/rayside.png"
    }

[/mw_shl_code][/mw_shl_code]
用这个笨方法可以达到效果，但是代码太冗杂了……