need

import java.util.*;
import com.googlecode.lanterna.*;
import com.googlecode.lanterna.terminal.*;
import com.googlecode.lanterna.input.*;

public class Snake {
	private Terminal term;
	private int cursor_x = 10, cursor_y = 10;
	ArrayList<Position> sis = new ArrayList<Position>();
	char snake[] = { '*', '*', '*' };

	public Snake() {
		term = TerminalFacade.createTerminal();
		term.enterPrivateMode();
		int valor = 2;
		while (true) {
			Key k = term.readInput();
			if (k != null) {
				switch (k.getKind()) {
				case Escape:
					term.exitPrivateMode();
					return;
				case ArrowLeft:
					cursor_x -= 1;
					valor = 1;
					break;
				case ArrowRight:
					cursor_x += 1;
					valor = 2;
					break;
				case ArrowDown:
					cursor_y += 1;
					valor = 3;
					break;
				case ArrowUp:
					cursor_y -= 1;
					valor = 4;
					break;
				//default: valor=5;
				}
			}

			term.clearScreen();


			for (int i = snake.length-1; i > 0; i--) {
				sis.add(i, sis.get(i - 1));
			}
			Position x = new Position(cursor_x, cursor_y);
			sis.add(0, x);
			term.applyForegroundColor(Terminal.Color.RED);
			/*if (valor == 2) {
				cursor_x += 1;
			}

			else if (valor == 1)
				cursor_x -= 1;
			else if (valor == 3)
				cursor_y += 1;
			else
				cursor_y -= 1;*/
			for(int i=0;i<snake.length;i++)		{
			show(snake, sis.get(i).point_x, sis.get(i).point_y,i);
			term.flush();

			try {
				Thread.sleep(30);
			} catch (InterruptedException ie) {
				ie.printStackTrace();
			}
		}}
	}

	private void show(char[] str, int x, int y,int l) {
		term.moveCursor(x, y);

		int len = str.length;

		//for (int i = 0; i < len; i++) {
			term.putCharacter(str[l]);
		//}

	}
}