public class Snake extends Critter {
	private int horizontalLength; // supposed to go
	private int progress;

	public Snake() {
		horizontalLength = 1;
	}

	public String toString() {
		return "S";
	}
	
	/*
	E S WW S EEE S WWWW S EEEEE S WWWWWW
	    ^								^
	after south: increase horizontal length by 1; toggle direction (boolean?)
	start going E
	always go odd number of E; even of W
	
	boolean for E vs W
	number of times you go W (or E or horizontally or Souths)
	total number of calls on getMove
	
	am I going horizontally?
		am I going E or W?
			go 
	go south
	*/
	public Direction getMove() {
		if (progress < horizontalLength) {
			progress++;
			if (horizontalLength % 2 == 1) {
				return Direction.EAST;
			} else {
				return Direction.WEST;
			}
		} else {
			progress = 0;
			horizontalLength++; // both increases length AND changes E vs W
			return Direction.SOUTH;
		}
	}
}