Snake(applet)

//applet Frame

import java.awt.Frame;
import java.awt.Event;
import java.awt.Dimension;
import java.applet.Applet;


// Applet to Application Frame window
class AppletFrame extends Frame
{

public static void startApplet(String className,
String title,
String args[])
{
// local variables
Applet a;
Dimension appletSize;

try
{
// create an instance of your applet class
a = (Applet) Class.forName(className).newInstance();
}
catch (ClassNotFoundException e) { return; }
catch (InstantiationException e) { return; }
catch (IllegalAccessException e) { return; }

// initialize the applet
a.init();
a.start();

// create new application frame window
AppletFrame f = new AppletFrame(title);

// add applet to frame window
f.add("Center", a);

// resize frame window to fit applet
// assumes that the applet sets its own size
// otherwise, you should set a specific size here.
appletSize = a.size();
f.pack();
f.resize(440,380);

// show the window
f.show();

} // end startApplet()


// constructor needed to pass window title to class Frame
public AppletFrame(String name)
{
// call java.awt.Frame(String) constructor
super(name);
}

// needed to allow window close
public boolean handleEvent(Event e)
{
// Window Destroy event
if (e.id == Event.WINDOW_DESTROY)
{
// exit the program
System.exit(0);
return true;
}

// it's good form to let the super class look at any
// unhandled events
return super.handleEvent(e);

} // end handleEvent()

} // end class AppletFrame










//snake

import java.applet.Applet;
import java.awt.Graphics;
import java.awt.*;
import java.awt.event.*;
import java.awt.Image.*;
import javax.swing.*;

public class Snake extends Applet implements ActionListener
{
int SnakeWidth = 10;
int SnakeLength = 10;
int SnakeSpeed[] = new int[SnakeLength]; // Speed of the snake
int x[] = new int[SnakeLength]; // X position of each oval
int y[] = new int[SnakeLength]; // Y position of each oval
int directionX[] = new int[SnakeLength]; // X Direction each oval is going (RIGHT, LEFT)
int directionY[] = new int[SnakeLength]; // Y Direction each oval is going (DOWN, UP)
Color SnakeColor[] = new Color[SnakeLength]; // Color of each oval
Timer timer;

Button B1;
Button B2;
Button B3;

public void init()
{

B1 = new Button("Feed Snake");
add(B1);

B3 = new Button("Starve Snake");
add(B3);

B2 = new Button("Exit");
add(B2);

for(int i = 0; i < SnakeLength; i++)
{
x[i] = (int)(i * 10 + getWidth()); // X-Position for each ball
y[i] = (int)(i * 10 + getHeight()); // Y-Position for each ball
directionX[i] = (int)(1 * 2); // X-Direction for each ball
directionY[i] = (int)(1 * 2); // Y-Direction for each ball
SnakeSpeed[i] = (int)(1); // Speed for each ball
}

timer = new Timer(1, this); //Set the delay

B1.addActionListener(this);
B2.addActionListener(this);
B3.addActionListener(this);

}

public void paint(Graphics g)
{
int i;
for(i = 0; i < SnakeLength; i++)
{
g.setColor(SnakeColor[i]); // Set the color to the color previously set
g.fillOval(x[i], y[i], SnakeWidth, SnakeWidth); // Draw the oval

if(x[i] >= getWidth() - SnakeWidth) // Check if the ball is at the edge of the screen
directionX[i] = 1; // Set the direction X to LEFT
if(x[i] <= 0) // Check if the ball is at the edge of the screen
directionX[i] = 0; // Set the direction X to RIGHT
if(y[i] >= getHeight() - SnakeWidth) // Check if the ball is at the edge of the screen
directionY[i] = 1; // Set the direction Y to UP
if(y[i] <= 0) // Check if the ball is at the edge of the screen
directionY[i] = 0; // Set the direction Y to DOWN
if(directionX[i] == 0) // Check if the ball is going RIGHT
x[i]+=SnakeSpeed[i]; // Add the value of the current balls speed to the current balls x position (Makes the ball move to the right)
if(directionX[i] == 1) // Check if the ball is going LEFT
x[i]-=SnakeSpeed[i]; // Add the value of the current balls speed to the current balls x position (Makes the ball move to the left)
if(directionY[i] == 0) // Check if the ball is going DOWN
y[i]+=SnakeSpeed[i]; // Add the value of the current balls speed to the current balls y position (Makes the ball move to the down)
if(directionY[i] == 1) // Check if the ball is going UP
y[i]-=SnakeSpeed[i]; // Add the value of the current balls speed to the current balls y position (Makes the ball move to the up)

if(x[i] <= 0) // Check if the ball is at the edge of the screen
{
setBackground(Color.black);
SnakeColor[i] = new Color((int)(Math.random() * 255), (int)(Math.random() * 255), (int)(Math.random() * 255));
} // Random ball color
else if(x[i] >= getWidth() - SnakeWidth)
{
setBackground(Color.white);
SnakeColor[i] = new Color((int)(Math.random() * 255), (int)(Math.random() * 255), (int)(Math.random() * 255));
} // Random ball color
else if(y[i] >= getHeight() - SnakeWidth)
{
setBackground(Color.darkGray);
SnakeColor[i] = new Color((int)(Math.random() * 255), (int)(Math.random() * 255), (int)(Math.random() * 255));
} // Random ball color
else if(y[i] <= 0)
{
setBackground(Color.green);
SnakeColor[i] = new Color((int)(Math.random() * 255), (int)(Math.random() * 255), (int)(Math.random() * 255));
} // Random ball color
}
}

public void actionPerformed(ActionEvent e) // Called each time the timers delay is up
{

repaint();

if (e.getSource() == B1)
{SnakeWidth = SnakeWidth+2;}
else if (e.getSource() == B2)
{System.exit(0);}
else if (e.getSource() == B3)
{SnakeWidth = SnakeWidth-2;}
}

public void start()
{
timer.start(); // Start drawing
}

public static void main(String args[])
{
AppletFrame.startApplet("Snake","Snake",args);
}
}