Callback for when a DOText makes a character appear?

[emredesu]

Hello, I would like to play a sound effect whenever a DOText tween makes a character appear, bit by bit. I tried OnUpdate and OnStepComplete, but those seem to fire way quite often compared to a character's appearance. Is there a method for this?

[ThomasACampbell]

Hello. I'm trying to do the same thing. Did you ever find a usable callback?

[emredesu]

Hello. I'm trying to do the same thing. Did you ever find a usable callback?

Hey, I couldn't find a usable callback so I ended up writing my own tweener. Here's the code:

    private readonly char[] punctuationCharacters = { ',', '.', ':', '!', '?', ';', '-' };

    IEnumerator TextTween(string targetText, float waitTimePerCharacter) {
        tweeningText = true;

        textTMP.SetText(targetText);
        textTMP.ForceMeshUpdate(); // Makes it so that textInfo.characterCount information is available right away.

        int charCount = textTMP.textInfo.characterCount;
        textTMP.maxVisibleCharacters = 0;

        for (int i = 0; i < charCount; i++) {
            textTMP.maxVisibleCharacters++;
            OnTextUpdated();
            yield return new WaitForSecondsRealtime(waitTimePerCharacter);

            // Pause for punctuation characters
            foreach (char punctuationChar in punctuationCharacters) {
                if (textTMP.textInfo.characterInfo[textTMP.maxVisibleCharacters - 1].character == punctuationChar)
                    yield return new WaitForSecondsRealtime(punctuationDelay);
            }
        }

        tweeningText = false;

        OnTextTweenComplete();
    }

    void OnTextUpdated() {
        // Do something when a character appears...
    }

    void OnTextTweenComplete() {
        // Do something when the text finishes tweening...
    } 

Will need some tinkering as I've copied & pasted it from my project and removed a lot of parts... but I hope you get the idea :p

[ThomasACampbell]

So very nice of you! Thank you for taking your time to share this :)

On Mon, Mar 25, 2024 at 10:15 PM emredesu @.***> wrote:

Hello. I'm trying to do the same thing. Did you ever find a usable callback?

Hey, I couldn't find a usable callback so I ended up writing my own tweener. Here's the code:

private readonly char[] punctuationCharacters = { ',', '.', ':', '!', '?', ';', '-' };

IEnumerator TextTween(string targetText, float waitTimePerCharacter) {
    tweeningText = true;

    textTMP.SetText(targetText);
    textTMP.ForceMeshUpdate(); // Makes it so that textInfo.characterCount information is available right away.

    int charCount = textTMP.textInfo.characterCount;
    textTMP.maxVisibleCharacters = 0;

    for (int i = 0; i < charCount; i++) {
        textTMP.maxVisibleCharacters++;
        OnTextUpdated();
        yield return new WaitForSecondsRealtime(waitTimePerCharacter);

        // Pause for punctuation characters
        foreach (char punctuationChar in punctuationCharacters) {
            if (textTMP.textInfo.characterInfo[textTMP.maxVisibleCharacters - 1].character == punctuationChar)
                yield return new WaitForSecondsRealtime(punctuationDelay);
        }
    }

    tweeningText = false;

    OnTextTweenComplete();
}

void OnTextUpdated() {
    // Do something when a character appears...
}

void OnTextTweenComplete() {
    // Do something when the text finishes tweening...
}

Will need some tinkering as I've copied & pasted it from my project and removed a lot of parts... but I hope you get the idea :p

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