Question arcs ADV Mode/1080p development

I'm listing the known bugs/gotchas for ADV mode as I work on it here, mainly because they might be hard to fix and might not occur often enough for you to notice them unless you do a full playthrough:

### Missing Features (compared to Answer Arcs)

### Known bugs

- It is theoretically possible for the text to overflow the textbox, if there is a very long text line, but I haven't seen this happen yet. Please let me know if you see this happen

- If the text is cleared (as no more space is left), and the next sentence to be displayed has a space in front of it, the space will be displayed (the first sentence will be indented slightly). I don't know if this can be fixed easily.

- clicking during a voicedelay command (my custom command) causes the text to stop displaying half way through the sentence, and only fully display once the the text has reached the end. . It may be possible to fix this by making the game 'freeze' in the pretext callback, so that at least the next line is displayed. For now I will just leave it. **EDIT: is this fixed now? I haven't seen it happen in a while?**

Example
```
langjp:voicedelay 1600:dwave_jp 0, nan_1e21:^^遣り残し。@:dwave_jp 0, nan_1e22:受け継いで欲しいことや、/
langen:voicedelay 1600:dwave_eng 0, nan_1e21:^or matters you have left unfinished.^@:dwave_eng 0, nan_1e22:^ Things you want to pass down to others...^/

langjp:voicedelay 1890:dwave_jp 0, nan_1e23:^^……伝えたいこと。@:dwave_jp 0, nan_1e24:……何でもいいんです。」\
langen:voicedelay 1890:dwave_eng 0, nan_1e23:^...or merely matters you wish to communicate.^@:dwave_eng 0, nan_1e24:^ ......Anything you want."^/
```

- end scrolls have wrong timing (affects non-adv mode as well) **EDIT: I have gone through all the credits and it should be fixed now, but it's possible I missed some credits. Let me know if you have credits problems.**

- No method to switch to alternate textbox. Also, black textbox has the wrong (answer arcs) icon!

### Some other notes which are not bugs:
- you can change the font at runtime using the `pmapfont` command (I thought you couldn't because there is also a `h_mapfont` command which you can only use in the definition section of the program
- you can use clickwaits in the clickwait callback but it will cause an infinite loop unless you have some way to break out of it. I can't think of a good reason to do this
- you can't print text in a pretext callback, it will cause an infinite loop

### TODO:
- ~~remove not used ADV functions. I put some functions in earlier which I thought I'd use, but they're not used anymore.~~
- ~~once ADV mode is finished, add a notice at the start of the script that ADV mode has been added~~

### Fixed bugs

- **fixed**: the *text_cw (clickwait callback) and *pretext (callback before each text phrase is displayed) occur for both the japanese and english lines and clickwaits. This caused some wierd bugs, but I have fixed it by using the same method that was originally in the script:

```
getreadlang %cur_read_lang
if %cur_read_lang != %cur_language jumpf
do stuff here
~
```

This also renders what I did with the 'dwave_jp' and 'dwave_eng' useless - I only mad ethose functions because I didn't know how to check whether you were in japanese or english mode :S.

- **fixed - it turns out there aren't that many special regions in the script, unless I missed them. The answer arcs had way more** - Special text regions aren't supported yet (to be copied from umitweak)

- **fixed**: adv mode is cleared when encountering a setwindow command, and not automatically enabled at game startup: this one is relatively easy to fix, but hasn't been done yet.

- Clearing the text box when a different character is speaking is not supported yet

- Showing the name of the character speaking is not supported

- Nameboxes for 4 characters are missing! (just waiting on our team to generate those 4 nameboxes)

- Backlog doesn't work properly

The issue describes ADV mode bugs in a visual novel engine. Look at the script examples and commands like `voicedelay`, `pmapfont`, and textbox handling. Start by finding where text rendering and callback logic (`text_cw`, `pretext`) are implemented, likely in C# files related to dialogue or UI. Test the specific overflow, space-indentation, and click-during-voicedelay bugs with the provided script snippets to see current behavior.

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