import java.util.*;

public class WormLettered extends Worm { 

    /*	
    public Worm() {
	
	length = rand.nextInt(WormWorld.maxlength-WormWorld.minlength+1) + 
	         WormWorld.minlength;
	head = 0;                        //queue
	color = rand.nextInt(WormWorld.numcolors-1) + 1;  //assume black is BG
	x[0] = rand.nextInt(WormWorld.cols) + 1;
	y[0] = rand.nextInt(WormWorld.rows) + 1;
	for (int i=1; i<length; i++) {
	    switch (rand.nextInt(4)) {
	    case 0:        //left
		if (x[i-1] > 1)
		    x[i] = x[i-1] - 1;
		else
		    x[i] = x[i-1];
		y[i] = y[i-1];
		break;
	    case 1:        //up
		x[i] = x[i-1];
		if (y[i-1] > 1)
		    y[i] = y[i-1] - 1;
		else
		    y[i] = y[i-1];
		break;
	    case 2:        //right
		if (x[i-1] < WormWorld.cols)
		    x[i] = x[i-1] + 1;
		else
		    x[i] = x[i-1];
		y[i] = y[i-1];
		break;
	    case 3:        //down
		x[i] = x[i-1];
		if (y[i-1] < WormWorld.rows)
		    y[i] = y[i-1] + 1;
		else
		    y[i] = y[i-1];
		break;
	    }
	}
    }
    */
    void display() {
	switch (color) {
	    //    case 0: colorback_black();   //BG.  not the color of any worm
	    //break;
	case 1: Ansiscreen.colorback_red();
	    break;
	case 2:Ansiscreen.colorback_green();
	    break;
	case 3:Ansiscreen.colorback_yellow();
	    break;
	case 4:Ansiscreen.colorback_blue();
	    break;
	case 5:Ansiscreen.colorback_magenta();
	    break;
	case 6:Ansiscreen.colorback_cyan();
	    break;
	case 7:Ansiscreen.colorback_white();
	    break;
	}
	
	Ansiscreen.gotoxy(y[head],x[head]);
	//System.out.print("a");
	System.out.print("o");
	
	for (int i=1; i<length; i++) {
	    Ansiscreen.gotoxy(y[(i+head)%maxwormlen],
			      x[(i+head)%maxwormlen]);
	    System.out.print((char)('a'+i));           //differ from Worm
	    //	    System.out.print(' ');
	}
    }
    

}