// CSE 142, Autumn 2010, Jessica Miller
// A class to represent a Snake critter.  
// Snakes move south in a growing zig zag motion.
public class Snake extends Critter {
    private int steps; // the number of times we have gone in a direction
    private int cycle; // length of E/W direction
    
    public Snake() {
        steps = 0;
        cycle = 1;
    }
    
    public Direction getMove() {
        steps++;
        if (steps > cycle) {
            steps = 0;
            cycle++;
            return Direction.SOUTH;
        } else if (cycle % 2 == 1) {
            return Direction.EAST;
        } else {
            return Direction.WEST;
        }
    }
    
	public String toString() {
		return "S";
	}    
}