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

/**
 * Write a description of class RobinsonStill here.
 * 
 * @author (your name) 
 * @version (a version number or a date)
 */
public class RobinsonStill extends Actor
{
    public int vSpeed;
    public int gravity = 2;
    
    public boolean jumping;
    public int jumpStregth = 20;
    
    public int speed = 5;
    
    
    /**
     * Act - do whatever the RobinsonStill wants to do. This method is called whenever
     * the 'Act' or 'Run' button gets pressed in the environment.
     */
    public void act()
    {
         checkFall();
         checkKeys();
    }
    
    public void checkKeys()
    {
        if(Greenfoot.isKeyDown("Up") && jumping == false)
        {
        jump();
    }
    if(Greenfoot.isKeyDown("right"))
    {
        setLocation(getX() + speed, getY());
    }
    /**
    
    if(Greenfoot.isKeyDown("left"))
    {
        setLocation(getY() + speed, getX());
    }
    */
}
    public RobinsonStill()
    {
        GreenfootImage myImage = getImage();
        int myNewHeight = (int)myImage.getHeight()/6;
        int myNewWidth = (int)myImage.getWidth()/6;
        myImage.scale(myNewWidth, myNewHeight);
    }
    public void checkFall()
    {
        if(onGround() == true)
            vSpeed = 0;
        else
            fall();
    }
    public void fall()
    {
        setLocation(getX(), getY() + vSpeed);
        
        if(vSpeed <= 12)
        vSpeed = vSpeed + gravity;
        
        jumping = true;
    }
    
    public boolean onGround()
    {
        int spriteHeight = getImage().getHeight();
        int lookForGround = spriteHeight/2;
        
        Actor ground = getOneObjectAtOffset(0, lookForGround, Floor.class );
        if(ground == null)
        {  jumping = true;
            return false;
        }
            else
        {
            moveToGround(ground);
            return true;
        }
    }
    public void moveToGround(Actor ground)
    {
        int groundHeight = ground.getImage().getHeight();
        int newY = ground.getY() - (groundHeight + getImage().getHeight())/2;
        
        setLocation(getX(), newY);
        jumping = false;
    }
    public void jump()
    {
        vSpeed = vSpeed - jumpStregth;
        jumping = true;
        fall();
    }
}