Hacked "TextField" flow for ex2d's spriteFont

exTextLayout.cs

using UnityEngine;
using System.Text;
using System.Collections;
using System.Collections.Generic;

public class exTextLayout : MonoBehaviour {
	
	
	public exSpriteFont textField;
	
	public int textFieldWidth = 200;
	
	public string textForField = "This is the default text.";
	
	
	private static Dictionary<string, string> textCache;
	
	void Start () {
		
		textCache = new Dictionary<string, string>();
		
		ReflowText(textForField);
	}
	
	
	public void ReflowText(string reflowText, bool useCache = true)
	{
		StartCoroutine(_ReflowTextTwo(reflowText, useCache));
	}
	
	private IEnumerator _ReflowTextTwo(string reflowText, bool useCache = true)
	{
		
		// check to see if we have this value already.
		if(textCache.ContainsKey(reflowText) && useCache)
		{
			textField.text = textCache[reflowText];
			yield break;
		}
		
		List<int> breakPoints = new List<int>();
		
		textField.enabled = false;
		textField.text = reflowText;
		
		// we need a tick for the text field to update with the new text. 
		yield return null;
		
		float tempWidth = 0;
		Rect charRect;
		int lastSpace = 0;
		
		int i = 0;
		
		while(i < reflowText.Length)
		{
			
			if(reflowText[i] == ' ')
			{
				lastSpace = i;
			}
			
			charRect = textField.GetCharRect(i);
			tempWidth += charRect.width;
			if(tempWidth >= textFieldWidth)
			{
				breakPoints.Add(lastSpace);
				tempWidth = 0;
				i = lastSpace + 1;
			}
			else
			{
				i++;
			}
		}

		StringBuilder sb = new StringBuilder(reflowText);
		
		foreach(int space in breakPoints)
		{
			sb.Replace(" ", "\n", space, 1);
		}
		
		// cache the reflowed text. 
		if(useCache) textCache[reflowText] = sb.ToString();
		
		textField.text = sb.ToString();
		textField.enabled = true;
	}
	
	
	
}

This is a much better version. It doesn't do the "building the string" animation. It also caches text which it has seen before.

Made the text cache into a static class var. Also added the ability to bypass the cache.