package coreGame;

import java.util.Vector;
import javax.microedition.lcdui.Graphics;

public class Snake {

Vector snake;
int direction;
static final int LEFT = 0, UP = 1, DOWN =2, RIGHT = 3;

 public Snake() {
  snake = new Vector();
 }
 public void paintSnake(Graphics g){
  for(int i = 0; i < snake.size(); i++){
    PartSnake part =(PartSnake)( snake.elementAt(i) );
    g.setColor(33, 152, 33);
    g.fillRect(part.x, part.y, 10, 10);
    g.setColor(0, 0, 0);
    g.drawRect(part.x, part.y, 10, 10);
  }
 }
 public void moving(){
  if(direction == UP)moveUp();
  if(direction == DOWN)moveDown();
  if(direction == LEFT)moveLeft();
  if(direction == RIGHT)moveRight();
 }
 public void create(int x, int y){
  PartSnake head = new PartSnake(x, y);
  PartSnake part1 = new PartSnake(x, y + 10);
  PartSnake part2 = new PartSnake(x, y + 20);

  snake.addElement(head);
  snake.addElement(part1);
  snake.addElement(part2);
 }
 public void add(){
  PartSnake localPart = (PartSnake)(snake.elementAt(snake.size() - 1));
  int x = localPart.x;
  int y = localPart.y;
  if(direction == LEFT)snake.addElement( (PartSnake)(new PartSnake (x - 10, y) ) );
  if(direction == UP)snake.addElement( (PartSnake)(new PartSnake(x, y + 10) ) );
  if(direction == RIGHT)snake.addElement((PartSnake)(new PartSnake(x + 10, y) ) );
  if(direction == DOWN)snake.addElement((PartSnake)(new PartSnake(x, y - 10) ) );
 }
 public void moveLeft(){
  PartSnake localPart = (PartSnake)(snake.elementAt(snake.size() - 1));
  int x = localPart.x;
  int y = localPart.y;
  if(snake.size() == 0)create(10, 10);
  if(direction != RIGHT){
   PartSnake head = new PartSnake(x - 10, y);
   snake.insertElementAt(head, 0);
   snake.removeElementAt(snake.size() - 1);
  }
 }
 public void moveUp(){
  PartSnake localPart = (PartSnake)(snake.elementAt(snake.size() - 1));
  int x = localPart.x;
  int y = localPart.y;
  if(snake.size() == 0)create(10, 10);
  if(direction != DOWN){
   PartSnake head = new PartSnake(x, y - 10);
   snake.insertElementAt(head, 0);
   snake.removeElementAt(snake.size() - 1);
  }
 }
 public void moveRight(){
  PartSnake localPart = (PartSnake)(snake.elementAt(snake.size() - 1));
  int x = localPart.x;
  int y = localPart.y;
  if(snake.size() == 0)create(10, 10);
  if(direction != LEFT){
   PartSnake head = new PartSnake(x + 10, y);
   snake.insertElementAt(head, 0);
   snake.removeElementAt(snake.size() - 1);
  }
 }
 public void moveDown(){
  PartSnake localPart = (PartSnake)(snake.elementAt(snake.size() - 1));
  int x = localPart.x;
  int y = localPart.y;
  if(snake.size() == 0)create(10, 10);
  if(direction != UP){
   PartSnake head = new PartSnake( x, y + 10);
   snake.insertElementAt(head, 0);
   snake.removeElementAt(snake.size() - 1);
  }
 }    
}