Typewriter Normal

using UnityEngine;
using UnityEngine.UI;
using System.Collections;
using System.Collections.Generic;

public class TextBoxManager : MonoBehaviour {
    public TextAsset textFile;
    public GameObject panel;

    private List<string> textLines = new List<string>();
    public Text display;
    public float displaySpeed;

    private int currentLine = 0;
    private int currentCharPosition = 0;

    private bool textRunning = false;
    private bool endText = false;
    private bool textActive = false;

    GUIStyle style = new GUIStyle();

    void Start () {
        display = GetComponentInParent<Text>();
        initializeStyle();

        string[] initialArray = textFile.text.Split('\n');
        foreach (string s in initialArray)
            textLines.AddRange(initializeText(s));
    }

    void Update () {
        //se texto nao estiver sendo apresentado na tela, botar seta no canto inferior direito
        panel.GetComponent<Animator>().SetBool("showArrow", !textRunning);
        checkPress();
        checkEndText();
    }

    public void initiateEvent() {
        panel.GetComponent<Animator>().SetBool("eventActive", true);
        StartCoroutine(displayText());
    }

    private void checkPress() {
        if (Input.GetKeyDown(KeyCode.Z) && textActive) {
            if (textRunning)
                endLine();
            else
                nextLine();
        }
    }

    private IEnumerator displayText() {
        yield return new WaitForSeconds(1.2f);
        textActive = true;
        textRunning = true;

        //enquanto ainda houver texto para ser apresentado, apresente-o
        while (!endText) {
            checkCommand(textLines[currentLine]);
            display.text = textLines[currentLine].Substring(0, currentCharPosition);

            if (currentCharPosition < textLines[currentLine].Length)
                currentCharPosition++;
            else
                textRunning = false;

            yield return new WaitForSeconds(1 / displaySpeed);
        }
    }

    //percorre a linha ate o final e caso necessario, realiza realinhamento
    private void endLine() {
        currentCharPosition = textLines[currentLine].Length;
    }

    private void nextLine() {
        if (currentLine < textLines.Count - 1) {
            currentLine++;
            resetLine();
            checkCommand(textLines[currentLine]);
        } else {
            endText = true;
        }
    }

    private void resetLine() {
        currentCharPosition = 0;
        textRunning = true;
    }

    //checa se a proxima linha possui algum comando, se possuir, executa o comando
    private void checkCommand(string txt) {
        string idCommand = string.Empty;
        string command = string.Empty;

        if (txt.StartsWith("[")) {
            txt = txt.Remove(txt.Length - 1);
            txt = txt.Remove(0, 1);

            for (int i = 0; i < txt.Length; i++) {
                if (txt.ToCharArray()[i] == '_') {
                    idCommand = txt.Substring(0, i);
                    command = txt.Remove(0, i+1);
                }
            }

            if (idCommand.Equals("portrait")) {
                GameObject[] portraitArray = GameObject.FindGameObjectsWithTag(idCommand);
                GameObject portrait = GameObject.Find (command);

                Debug.Log ("Portrait: " + portrait);

                if (command.Equals("end"))
                    foreach (GameObject p in portraitArray)
                        p.GetComponent<Image>().enabled = false;
                else if (portrait == null)
                    Debug.Log ("Portrait '" + txt + "' not found.");
                else
                    portrait.GetComponent<Image>().enabled = true;
            }

            if (currentLine < textLines.Count - 1)
                currentLine++;
        }
    }

    private List<string> initializeText(string s) {
        List<string> output = new List<string>();
        int j = 0;

        while (needRealign(s) || j > 10) {
            j++;
            for (int i = 0; i < s.Length; i+=10) {
                string preview = s.Substring(0, i);

                if (needRealign(preview)) {
                    for (int c = preview.Length - 1; preview.ToCharArray()[c] != ' '; c--)
                        preview = preview.Remove(c);

                    output.Add (preview);
                    s = s.Remove (0, preview.Length);
                    break;
                }
            }
        }

        output.Add (s);
        return output;
    }

    //checa se o texto esta pulando pra fora da text box
    private bool needRealign(string text) {
        GUIContent content = new GUIContent(text);
        int numLines = 3;

        Vector2 textDimensions = style.CalcSize(content);
        if (textDimensions.x + 100 > display.rectTransform.rect.width * numLines)
            return true;

        return false;
    }

    private void checkEndText() {
        if (endText) {
            panel.GetComponent<Animator>().SetBool("endText", true);
            display.enabled = false;
        }
    }

    private void initializeStyle() {
        style.fontStyle = display.fontStyle;
        style.font = display.font;
        style.fontSize = display.fontSize;
    }
}