C# script to fade in UI text letter by letter.

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Updated Script:

using System.Collections; using System.Collections.Generic; using UnityEngine; using UnityEngine.UI; // ? 2017 TheFlyingKeyboard and released under MIT License // theflyingkeyboard.net public class FadeInTextLetterByLetter : MonoBehaviour { [SerializeField] private Text textToUse; [SerializeField] private bool useThisText = false; [TextAreaAttribute(4, 15)] [SerializeField] private string textToShow; [SerializeField] private bool useTextText = false; [SerializeField] private float fadeSpeedMultiplier = 0.25f; [SerializeField] private bool fade; private float colorFloat = 0.1f; private int colorInt; private int letterCounter = 0; private string shownText; private void Start() { if (useThisText) { textToUse = GetComponent<Text>(); } if (useTextText) { textToShow = textToUse.text; } if (fade) { Fade(); } } private IEnumerator FadeInText() { while (letterCounter < textToShow.Length) { if (colorFloat < 1.0f) { colorFloat += Time.deltaTime * fadeSpeedMultiplier; colorInt = (int)(Mathf.Lerp(0.0f, 1.0f, colorFloat) * 255.0f); textToUse.text = shownText + "<color=\"#FFFFFF" + string.Format("{0:X}", colorInt) + "\">" + textToShow[letterCounter] + "</color>"; } else { colorFloat = 0.1f; shownText += textToShow[letterCounter]; letterCounter++; } yield return null; } } public void Fade() { StartCoroutine(FadeInText()); } }

Old Script:

using System.Collections; using System.Collections.Generic; using UnityEngine; using UnityEngine.UI; // ? 2017 TheFlyingKeyboard and released under MIT License // theflyingkeyboard.net public class FadeInTextLetterByLetter : MonoBehaviour { [SerializeField] private Text textToUse; [SerializeField] private bool useThisText = false; [TextAreaAttribute(4, 15)] [SerializeField] private string textToShow; [SerializeField] private bool useTextText = false; [SerializeField] private float fadeSpeedMultiplier = 0.25f; [SerializeField] private bool fade; private float colorFloat = 0.1f; private int colorInt; private int letterCounter = 0; private string shownText; private void Start() { if (useThisText) { textToUse = GetComponent<Text>(); } if (useTextText) { textToShow = textToUse.text; } } private void Update() { if (fade) { if (letterCounter < textToShow.Length) { if (colorFloat < 1.0f) { colorFloat += Time.deltaTime * fadeSpeedMultiplier; colorInt = (int)(Mathf.Lerp(0.0f, 1.0f, colorFloat) * 255.0f); textToUse.text = shownText + "<color=\"#FFFFFF" + string.Format("{0:X}", colorInt) + "\">" + textToShow[letterCounter] + "</color>"; } else { colorFloat = 0.1f; shownText += textToShow[letterCounter]; letterCounter++; } } } } public void Toggle() { fade = !fade; } public void StartShowing() { fade = true; } public void StopShowing() { fade = false; } }





