// Stuart Reges
// 1/26/00
//
// Class CritterFrame provides the user interface for a simple simulation
// program.

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;

public class CritterFrame extends JFrame {
    private CritterModel myModel;
    private CritterPanel myPicture;
    private Timer myTimer;

    public CritterFrame() {
        // create frame and order list
        setTitle("CSE142 critter simulation");
        setDefaultCloseOperation(EXIT_ON_CLOSE);
        Container contentPane = getContentPane();
        myModel = new CritterModel(100, 50);

        // set up critter picture panel and set size
        myPicture = new CritterPanel(myModel);
        setSize(CritterPanel.FONT_SIZE * myModel.getWidth()/2 + 125,
                CritterPanel.FONT_SIZE * myModel.getHeight() + 100);
        contentPane.add(myPicture, "Center");

        addTimer();

        // add timer controls to the south
        JPanel p = new JPanel();
        JButton b1 = new JButton("start");
        b1.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                myTimer.start();
            }
        });
        p.add(b1);
        JButton b2 = new JButton("stop");
        b2.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                myTimer.stop();
            }
        });
        p.add(b2);
        JButton b3 = new JButton("step");
        b3.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                myModel.update();
                myPicture.repaint();
            }
        });
        p.add(b3);
        contentPane.add(p, "South");
    }

    // add a certain number of critters of a particular class to the simulation
    public void add(int number, Class c) {
        myModel.add(number, c);
    }

    // post: creates a timer that calls the model's update
    //       method and repaints the display
    private void addTimer() {
        ActionListener updater = new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                myModel.update();
                myPicture.repaint();
            }
        };
        myTimer = new Timer(100, updater);
        myTimer.setCoalesce(true);
    }
 }