Interactive block

import greenfoot.*;  // (World, Actor, GreenfootImage, Greenfoot and MouseInfo)

/**
 * Write a description of class player here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class player extends Actor
{
    final int jSpeed = 20; //jump speed
    int ySpeed = 0, xSpeed = 0;
    boolean aboutFace;
    boolean onGround;

    /**
     * Act - do whatever the player wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
    public void act() 
    {
        move();
    }    
    private void move()
    {
        int dx = 0;
        if (Greenfoot.isKeyDown("a")) dx--;
        if (Greenfoot.isKeyDown("d")) dx++;
        for (int i=0; i<speed; i++)
        {
            setLocation(getX() + dx, getY());
            if (getOneIntersectingObject(blocks.class) == null) continue;
            setLocation(getX(), getY() + 1);
            if (getOneIntersectingObject(blocks.class) == null) continue;
            setLocation(getX(), getY() - 2);
            if (getOneIntersectingObject(blocks.class) == null) continue;
            setLocation(getX() - dx, getY() + 1);
            return;
            setLocation(getX() + dx, getY());
            if (getOneIntersectingObject(hostiles.class) == null) continue;
            getWorld.removeObject(this);
            return;
        }
    }
    /**
     * Determines any changes in horizontal and vertical speeds for the actor.
     */
    private void getDirection()
        {
        //if (!onGround) return; // if not mid-air changes allowed
        // sets requested direction of move, or continues in current direction
        
        if (Greenfoot.isKeyDown("up") && onGround) // check jump
        {
            ySpeed -= jSpeed; 
        }
   

    }
}