import javax.swing.*;
import java.io.*;

/** 
 * FrilJavaDemo.java
 *
 * Title:			Fril - Java noughts and crosses (tic-tac-toe) demo
 *
 * Description	
 *	Tutorial example  of Fril embedded in a java application. 
 * Java is used to handle the user interaction and display the current state of play.
 * Fril works out the next move and is also used to check whether the game has finished.
 * As the aim is to illustrate one way of communicating between Fril and Java, the 
 * software does not incorporate large amounts of error checking etc.
 * The GUI is created and handled in PlayingWindow.java and JButtonSquare.java.
 * The Fril code is in "noughts5". Note that human takes 'x' and computer takes 'o' in 
 * the game - this is hard-coded in the Fril source and PlayingWindow.java, JButtonSquare.java.
 *
 * Note that the high-level interface function "jFrilFindSolution" is used in this code. This
 * allows a string query of the form (X (move ((...) (...) (...)) X)) to be sent to Fril - syntax is 
 * identical to a fril "wh" query, i.e. the variable or pattern required is the first term in the list
 * and the remainder of the list is a goal to be executed.
 * The value returned to java gives the TYPE of the bound variable (JFril.JFRILINT, JFril.JFRILATOM, etc)
 * and a low-level "jFrilGet..." function can be used to retrieve the value.
 *
 * The front end includes debugging features so that Fril queries can be typed into a text area, and output 
 * from Fril and Java can be viewed in other text windows.
 *
 * @author T. P. Martin
 * @date June 2001
 * @version 1.0b1
 */


public class FrilJavaDemo 
{
static private PlayingWindow theWindow = null;
static private JFril theFril;

	final static int BLANK = -1;
	final static int HUMAN = -2;
	final static int COMPUTER = -3;
	final static int DRAW = -4;
        
	public FrilJavaDemo(JFril aFril) 
	{
		try {
			// For native Look and Feel, uncomment the following code.
			/*
			try {
				UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
			} 
			catch (Exception e) { 
			}
			*/
			theWindow = new PlayingWindow(this, aFril);
			theWindow.initComponents();
			theWindow.setVisible(true);
		}
		catch (Exception e) {
			e.printStackTrace();
		}
	}
	

	// Main entry point
	static public void main(String[] args) 
	{
		int i;
		JFril aFril = new JFril();
		new FrilJavaDemo(aFril);
		if(theWindow != null)
                    if(aFril.jFrilExecuteFril("load noughts5") == JFril.JFRILSUCCEEDED)
                    	theWindow.addJavaText("fril started OK");
                    else
                        theWindow.addJavaText("Fril couldn't load noughts5");
						 
	}
	
}