package snake;import java.awt.*;import java.awt.event.*;import java.applet.*;import java.awt.Graphics;import java.awt.Point;import java.awt.Event;public class smain extends Applet implements Runnable{  // 15 - rows, 25 - columns  boolean game = false, ate=false, game2=false, playing=false;  int size, hsize=0;  Point[] places = new Point[374];  int dir = 0;  // 0 - right                // 1 - left                // 2 - up                // 3 - down  Point apple = new Point(12,7);  Thread runner;  public void init() {          size=3;          for(int i=0; i<374; i++)                  places[i] = new Point(0,0);          places[0].move(3,15);          places[1].move(2,15);          places[2].move(1,15);  }  public void start() {          if(runner==null) {                  runner = new Thread(this);                  runner.start();          }  }  public void stop() {          if(runner!=null) {                  runner.stop();                  runner = null;          }  }  public void run() {          while(true) {                  // All possible game overs - wall crashings or crashing into your own snake                  for(int i=5; i<size; i++)                          if(places[0].x == places[i].x && places[0].y == places[i].y)                                  game2 = true;                  if(( (game2) || (dir==0 && places[0].x==25) || (dir==1 && places[0].x==1) || (dir==2 && places[0].y==1) || (dir==3 && places[0].y==15))) {                          // Setting all starting points again                          game = false;                          game2 = false;                          if(size>hsize) hsize=size;                          size=3;                          places[2].move(1,15);                          places[1].move(2,15);                          places[0].move(3,15);                          apple.move(12,7);                  }          repaint();          try{ Thread.sleep(70); }          catch(InterruptedException e) { }          }  }  public void update(Graphics g) {          g.drawRect(apple.x*20-20,apple.y*20-20,19,19);          if(game) {                  if(places[0].x==apple.x && places[0].y==apple.y) {                                  ate=true;                                  size++;                                  g.clearRect(0,0,size().width,12);                          }                  // Drawing new head position, erasing last tale position                  g.clearRect(places[size-1].x*20-20,places[size-1].y*20-20,20,20);                  if(places[size-1].x == apple.x && places[size-1].y == apple.y)                          g.drawRect(apple.x*20-20,apple.y*20-20,19,19);                  if(playing) {                          for(int i=size; i>0; i--)                                  places[i].move(places[i-1].x, places[i-1].y);                  switch(dir) {                                  case 0: places[0].x = places[0].x+1; break;                                  case 1: places[0].x = places[0].x-1; break;                                  case 2: places[0].y = places[0].y-1; break;                                  case 3: places[0].y = places[0].y+1; break;                          }}                  // Checking if had just eaten an apple, if yes - draw new apple location                  if(ate) {                          ate = false;                          g.clearRect(apple.x*20-20,apple.y*20-20,21,21);                          apple.x=(int)(Math.random()*24+1);                          apple.y=(int)(Math.random()*14+1);                          g.drawRect(apple.x*20-20,apple.y*20-20,19,19);                  }                  for(int i=0; i<size; i++)                          g.fillOval(places[i].x*20-20,places[i].y*20-20,20,20);          } else {                  // Clears screen, and draws again apple and new body                  g.clearRect(0,0,size().width,size().height);                  for(int i=0; i<size; i++)                          g.fillOval(places[i].x*20-20,places[i].y*20-20,20,20);                  g.drawRect(apple.x*20-20,apple.y*20-20,19,19);          }                  g.drawString("Score: "+size+"           Heighest score till now: "+hsize,10,10);  }  public boolean keyDown(Event evt, int key) {        if(key == Event.RIGHT && places[1].x!=places[0].x+1) { dir=0; game=true; playing=true; return true; }        else if(key == Event.LEFT && places[1].x!=places[0].x-1) { dir=1; game=true; playing=true; return true; }        else if(key == Event.UP && places[1].y!=places[0].y-1) { dir=2; game=true; playing=true; return true; }        else if(key == Event.DOWN && places[1].y!=places[0].y+1) { dir=3; game=true; playing=true; return true; }        else if(key == 112 || key == 1508) {                playing=false;                return true;        }        return false;  }}