// CSE 142 Lecture 21
// Static Members
// This class represents a Snake that moves an increasing distance
// East and West between moves South. It always forfeits in a fight,
// never eats, is black, and is displayed as a "S".

public class Snake extends Critter {
	private int length;
	private int step;
	
	public Snake() {
		length = 1;
		step = 0;
	}
	
	public String toString() {
		return "S";
	}
	
	public Direction getMove() {
		step++;
		if (step > length) {
			step = 0;
			length++;
			return Direction.SOUTH;
		}
		if (length % 2 == 1) {
			return Direction.EAST;
		} else {
			return Direction.WEST;
		}
	}
}