import java.awt.Color;

public class Police extends Player {
	//  OVERVIEW: The Police are of type Player and move around the grid. 
	//  If the crawler runs into the police, he is ticketed or arrested.
	private boolean /*@non_null@*/inTurn;
	//	Currently in the middle of a turn (used for coloring)
	protected String/*@non_null@*/ state;

	public Police() {
		inTurn = false;
		state = "Police";

	public Color getColor() 
	//Effects: returns the color associated with this
		if (inTurn) {
		} else {
			return Color.white;
	}//@nowarn NonNullResult // ESC/Java doesn't know Color constants are not null
	public void executeTurn() throws RuntimeException
	// Note: requires isInitialized is inherited from SimObject
	// EFFECTS: Picks a random direction and tries to move that way. 
	//          If the move is successful, set new location. If the move fails
	//          because the spot being attempted to move into is already
	//          occupied then try another direction.

		inTurn = true;
		Direction dir = Direction.randomDirection();
		int newy = getY() + dir.northerlyDirection();
		int newx = getX() + dir.easterlyDirection();
		if (getGrid().validLocation(newx, newy)) {
			 synchronized (getGrid()){
			 if  (getGrid().isSquareEmpty(newx, newy)) { //@nowarn Pre
				// Here, we pretend there is a lot of compution to do by sleeping,
				// to make conditions more likely.
				setLocation(newx, newy);

		inTurn = false;

//modeled loosely after