Snake Game

                                    SNAKE GAME

Idea behind this Game:

1] To confine the snake draw a border in such a way that if it crosses the border then          player should loose.    

2] Create a small snake with some filled ovals of same radius  (r) side by side this can     be  achieved by placing circles with a spacing of 2r .

3] Movement of snake can be set by assigning the arrow keys to it.

4] Food can be created at random places by using Random class.

5] Each time the snake catches the food not only score but also length of the snake         has   to be increased.

6] Speed of the snake can be varied by using Thread.Sleep() function.

7] Concept of double buffering is used to stop blinking in snake movement.

   

                                                         

                                                                                                              ........HAPPY CODING

 ///////////////////////////////////////////////////////

import java.applet.*;
import java.awt.*;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.util.Random;

public class snake extends Applet implements KeyListener,Runnable{
     private Image i1;
       private  Graphics doubleG;
  int  dx=25;int dy=25;char k,k1;int v=0;int b=3;int tx,ty;
  int y = 251; int x =251;int x1;int z=0;
    public boolean keyLeft,keyUp,keyRight,keyDown;
@SuppressWarnings({ "unused", "serial" })
int xx[]=new int[20];int yy[]=new int[20];int dxx[]=new int[20];
int dyy[]=new int[20];
Random t1 = new Random();   Random t2 = new Random();int t=1;
 
public void paint (Graphics g) {
        if(z==0&&b<19)
        {
        //String s = String.valueOf(x);g.drawString(s, 990,34); //for knowing movement of snake in x axis
        //String s1 = String.valueOf(y);g.drawString(s1, 1100,34);
//for knowing movement of snake in y axis      
        //String b2 = String.valueOf(b);g.drawString(b2, 990,134);
//for knowing how much food snake had ate
         String score = String.valueOf(v*50);//printing score
         String time = String.valueOf(t*200);//printing time
         Font font = new Font("Arial",Font.BOLD,30);
         g.setFont(font);
         g.setColor(Color.darkGray);
        g.drawString(score, 990,234);g.drawString(time, 990,294);
        Font f = new Font("MV Boli",Font.ITALIC,30);
        g.setFont(f);
        g.setColor(Color.blue);
        g.drawString("Score :", 875,230);
        g.drawString("Time(ms) :", 805,290);
        if(v==0)
        {g.setColor(Color.green);
         g.fillOval(dxx[0],dyy[0],30,30);//initial position
           
        }
        if(dxx[v]==x&&dyy[v]==y)
        {
            v++;b++;//creating new food once it complete old

                    }g.setColor(Color.green);
                     g.fillOval(dxx[v],dyy[v],30,30);

        g.setColor(Color.red);
        g.drawRect(47, 47, 756, 606);
        g.drawRect(48, 48, 754, 604);
        g.drawRect(49, 49, 752, 602);//4 lines for borders
        g.drawRect(50, 50, 750, 600);

          for(int m=0;m<b;m++){xx[b-m]=xx[b-m-1];yy[b-m]=yy[b-m-1];}
        xx[0]=x;yy[0]=y;
        for(int i=0;i<b;i++)
        {
            g.setColor(Color.green);
             g.fillOval(xx[i],yy[i],30,30);
            if(i==0){g.setColor(Color.black);g.fillOval(xx[i]+10,yy[i]+10,10,10);    }
        }
        }

//below shown loop is executed once player lost the game                   else if(z==1&&b<20)
        {
            Font font = new Font("Arial",Font.BOLD,70); g.setFont(font);
            g.drawString("GAME OVER", 480,250);
    }
//below shown loop is executed once player completes the game
        else if(b>=19)  
        {
            Font font = new Font("Arial",Font.BOLD,70);
                 g.setFont(font);
int R = (int)(Math.random()*256);
int G = (int)(Math.random()*256);        
int B= (int)(Math.random()*256);
Color c = new Color(R, G, B);g.setColor(c);
g.drawString("U WIN", 480,250);

           
        }
    }
public void update(Graphics g)//doubling buffering
{if(i1==null)
{i1=createImage(this.getSize().width,this.getSize().height);
doubleG=i1.getGraphics();
    }
doubleG.setColor(getBackground());
doubleG.fillRect(0,0,this.getSize().width,this.getSize().height);
doubleG.setColor(getForeground());
paint(doubleG);
g.drawImage(i1,0,0,this);}
    public void init()
    {
        setSize(1200,1200);//Here random places are assigned
        for(int i2=0;i2<18;i2++)
    {
      tx=t1.nextInt(20);  ty=t2.nextInt(20);
      dxx[i2]=126+(tx*25);dyy[i2]=126+(ty*25);
    }
    Thread t=new Thread(this);
        t.start();
        addKeyListener(this);
        setFocusable(true);
     }
  //In run function both movement and confinement of snake is done
    public void run() {
        while(b<20)
        {
 if(x>776){z=1; }if(x<51){z=1;}if(y>626){z=1; }if(y<51){z=1; }
if(y>=51&&k== 'u'){y=y-dy;}else if(x<=776&&k=='r'){x=x+dx;}else if(x>=51&&k== 'l'){x=x-dx;}else if(y<=626&&k=='d'){y=y+dy;}
repaint();try {Thread.sleep(180);t++;}
catch (InterruptedException e) {e.printStackTrace();}
        }
    }
   //in below function arrow keys are lisened
          public void keyPressed(KeyEvent e) {

            int key = e.getKeyCode();
            if(key == KeyEvent.VK_UP&&k1!='d'){    k='u';}
            if(key == KeyEvent.VK_RIGHT&&k1!='l'){ k='r';}
            if(key == KeyEvent.VK_LEFT&&k1!='r'){  k='l';}
            if(key == KeyEvent.VK_DOWN&&k1!='u'){  k='d';}
           k1=k;
                 
     
          }
       public void keyReleased(KeyEvent e) {}
       public void keyTyped(KeyEvent e) {}
}