Greenfoot

Yurey

2015/4/26

#

hi can u help me out there:

private void atEdge()
    {
        if (atWorldEdge())
        {
            removeObject(this);
        }

i doesnt work with "this" i think but i dont know how to paraphrase it ^^ here is the atWorldEdge boolean:

 public boolean atWorldEdge()
    {
        if(getX() <=1 || getX() > getWorld().getWidth())
            return true;
        if(getY()<= 1 || getY() > getWorld().getHeight())
            return true;
        else
            return false;
    }

azazeel

2015/4/26

#

how about this : getWorld().removeObject(this); itsn't about "this", it's bcoz removeobject method is belong to world class

azazeel

2015/4/26

#

oh anyway, next time try to put the compile error warning

Yurey

2015/4/26

#

thank u :D 1 more question is something wrong with my boolean ? because the fireball isnt removed :/

danpost

2015/4/26

#

Yurey wrote...

thank u :D 1 more question is something wrong with my boolean ? because the fireball isnt removed :/

Yes. The high edge of the world dimensions can not be passed in a bounded world (or even reached, since zero is the first value and the dimension minus one is the last.).

Yurey

2015/4/26

#

ok what i need 2 change ?

Yurey

2015/4/26

#

ohh sorry *to not 2

danpost

2015/4/26

#

Yurey wrote...

ok what i need 2 change ?

The second conditions in both lines 3 and 5.

Yurey

2015/4/26

#

ty danpost now it works but the lower site buggs i think the Fireball wont get removed pls check my script

public boolean atWorldEdge()
    {
        if(getX() <=2 || getX() > 58)
            return true;
        if(getY() <=2 || getY() > 78)
            return true;
        else
            return false;
    }
    public void act() 
    {
        // Add your action code here.
        move(1);
        atEdge();
    } 
    private void atEdge()
    {
        if (atWorldEdge()==true)
        {
            getWorld().removeObject(this);
        }
    }

danpost

2015/4/26

#

I see no issues with the code given.

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problems with this pls help me :D