import greenfoot.*;

public class character extends Actor
{
    private int vSpeed=0;
    
    private int ySpeed;
    private int apexTimer;
    
 
    public character()
    {}
   
    public void act() 
    {
        checkKeys();
        onGround();

}
public void checkKeys()
{ if (Greenfoot.isKeyDown ("D"))
        {move (4);
            setImage("gun_rechts.png");}
        if (Greenfoot.isKeyDown ("A"))
        {move (-4);
        setImage("gun_links.png");}
        if (Greenfoot.isKeyDown ("W"))
        {setImage("gun_oben.png");}
        if (Greenfoot.isKeyDown ("S"))
        {setImage("gun_unten.png");}
    }
    public void onGround()
    {
        int groundLevel = getWorld().getHeight() - getImage().getHeight()/2;
        boolean onGround = (getY() == groundLevel);
        if (!onGround) 
        {
            if (ySpeed == 0 && apexTimer > 0) apexTimer--; 
            if (ySpeed == 0 && apexTimer > 0) return; 
            ySpeed++; 
            setLocation(getX(), getY()+ySpeed);
          
            if (getY()>=groundLevel) 
            {
                setLocation(getX(), groundLevel); 
                Greenfoot.getKey(); 
           }
        }
        else // on ground
        {
            if ("space".equals(Greenfoot.getKey())) 
            {
                ySpeed = -15; // add jump speed
                setLocation(getX(), getY()+ySpeed); 
                apexTimer = 5;  
            }
    }    
}


}