TextField.java

import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)
import java.awt.Color;

/**
 * A program that, when you type a key or word, says it out loud.
 * 
 * @author seo 
 * @version 0.2
 */
public class TextField extends World
{
    StringBuilder word = new StringBuilder();
    GreenfootImage screen;
    /**
     * Constructor for objects of class Typer.
     * 
     */
    public TextField()
    {    
        // Create a new world with 600x400 cells with a cell size of 1x1 pixels.
        super(1095, 100, 1); 
        screen = getBackground();
        screen.setFont(screen.getFont().deriveFont(18.0f));
        Greenfoot.playSound("other/intro.wav");
    }
    
    public void act()
    {
       String key = Greenfoot.getKey();
       if(null!=key) {
           if (key.equals("space") || key.equals("enter")) {
               playWord();
           } else if(Greenfoot.isKeyDown("backspace")) {
               int end=word.length();
               if (word.length()>0){
                   word.deleteCharAt(end-1);
                }
           }
           
            else {
               playKey(key);
           }
           display();
        }
       
       
    } 
    
    
    void playKey(String key)
    {           
        String sound = key + ".wav";
        try{
             Greenfoot.playSound("letters/" + sound);
             // Add letter to word.  Only gets here if sound file was found
             word.append(key); 
        } catch (Exception e){
             Greenfoot.playSound("other/unknown.wav");            
        }
        // Greenfoot.delay(100);
    }
    
    void playWord() {
        String w = word.toString().trim().toLowerCase();
        try{
            Greenfoot.playSound("words/" + w + ".wav");
        } catch (Exception e){
            Greenfoot.playSound("other/unknown.wav");            
        }
        
        word.delete(0,word.length());
        Greenfoot.delay(100);
    }
    
    void display(){
        // Draw text box
        screen.setColor(Color.WHITE);
        screen.fillRect(5,5,290,25);
        // Draw text
        screen.setColor(Color.BLACK);
        screen.drawString(word.toString(),5,20);
    }
}