Simple C# script to create self writing text effect in Unity UI.

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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 //Writes text letter by letter with time step public class SelfWritingText : MonoBehaviour { [SerializeField] private Text textToUse; [SerializeField] private bool useThisText = false; [SerializeField] private bool useThisTextText = false; [SerializeField] private float letterPause = 0.1f; [TextAreaAttribute(4, 15)] [SerializeField] private string textToShow; private string message; private void Start() { message = textToShow; if (useThisText) { textToUse = GetComponent<Text>(); } if (useThisTextText) { message = textToUse.text; } textToUse.text = ""; StartCoroutine(TypeText(textToUse, message, letterPause)); } private IEnumerator TypeText(Text text, string textText, float timePause) { for(int i = 0; i < textText.Length; i++) { text.text += textText[i]; yield return 0; yield return new WaitForSeconds(timePause); } } public void WriteText(Text newText = null, string newTextToShow = null, float newLetterPause = -1.0f) { if(newText != null && newTextToShow != null && newLetterPause > 0.0f) { StartCoroutine(TypeText(newText, newTextToShow, newLetterPause)); return; } if(newText!= null && newTextToShow != null) { StartCoroutine(TypeText(newText, newTextToShow, letterPause)); return; } if (newText != null && newLetterPause > 0.0f) { StartCoroutine(TypeText(newText, message, newLetterPause)); return; } if (newTextToShow != null && newLetterPause > 0.0f) { StartCoroutine(TypeText(textToUse, newTextToShow, newLetterPause)); return; } if (newTextToShow != null) { StartCoroutine(TypeText(textToUse, newTextToShow, letterPause)); return; } if (newLetterPause > 0.0f) { StartCoroutine(TypeText(textToUse, message, letterPause)); return; } } }

Old Script:

using System.Collections; using System.Collections.Generic; using UnityEngine; using UnityEngine.UI; // ? 2017 TheFlyingKeyboard and released under MIT License // theflyingkeyboard.net //Writes text letter by letter with time step public class SelfWritingText : MonoBehaviour { [SerializeField] private Text textToUse; [SerializeField] private bool useThisText = false; [SerializeField] private bool useThisTextText = false; [SerializeField] private float letterPause = 0.1f; [TextAreaAttribute(4, 15)] [SerializeField] private string textToShow; private string message; private void Start() { message = textToShow; if (useThisText) { textToUse = GetComponent<Text>(); } if (useThisTextText) { message = textToUse.text; } textToUse.text = ""; StartCoroutine(TypeText()); } IEnumerator TypeText() { for(int i = 0; i < message.Length; i++) { textToUse.text += message[i]; yield return 0; yield return new WaitForSeconds(letterPause); } } }





