// Die.java
// Purpose: Simulates rolling a six-sided die x number of times
// Author: Mark Spurlock
// Date: October 29, 1996 (CS594 Lab 6)

// Get needed class libraries
import java.awt.*;
import java.applet.Applet;
import java.util.Random;

public class Die extends Applet {
	Label prompt;
	TextField input;
	int number;
	int face;
	int frequency[];
	Random r;

	public void init() {
	// Setup the GUI components and initialize variables
		prompt = new Label("Input times to roll die and press Enter:");
		input = new TextField(10);
		frequency = new int[7];
		number = 0;
		add(prompt);
		add(input);
	}

	public void paint(Graphics g) {
	// Put die data on screen
		int yPosition;
		yPosition = 75;
		g.drawString("Face", 25, yPosition);
		g.drawString("Frequency", 100, yPosition);
		for (face = 1; face < frequency.length; face++) {
			yPosition += 15;
			g.drawString(String.valueOf(face), 25, yPosition);
			g.drawString(String.valueOf(frequency[face]), 100, yPosition);
			frequency[face] = 0;
		}
		input.setText("");
	}

	public boolean action(Event event, Object o) {
	// Process user's action and roll die
		if (event.target == input) {
		// User pressed return inside input field
			number = Integer.parseInt(input.getText());
			r = new Random();
			for (int roll = 1; roll <= number; roll++) {
			// Add one to appropriate array entry
				face = 1 + Math.abs(r.nextInt() % 6);
				++frequency[face];
			}
			repaint(); // Post new data
		}
		return true;
	}
}