Greenfoot

GreenDude

2012/3/25

#

This is my scenario http://imageshack.us/photo/my-images/42/imagearl.png/ and i wanna make the "hero" climb the ladder, is the black thing, but i cant. this is the code i have: if (Greenfoot.isKeyDown("w") && checkLadder() ){ setImage("heroback.png"); moveUp(); } public boolean checkLadder() { //stairs escada = (stairs) getOneIntersectingObject(stairs.class); <- tryed both none of this lines worked Actor escada = getOneObjectAtOffset(0,0, stairs.class); <- return escada!=null; } public void moveUp() { setLocation ( getX(), getY() - speed ); }

matt.milan

2012/3/25

#

please capitalize class names (stairs -> Stairs) it's just a convention, we're trained to read things a certain way in java :) i'm going to try to write a quick ladder-situation using your code, and i'll let you know what i find afterwards

GreenDude

2012/3/25

#

ok i will do that

danpost

2012/3/25

#

Assuming speed is not zero, both ways should return true (if true). You could just say:

public boolean checkLadder()
{
    return (getOneIntersectingObject(stairs.class) != null);
}

But this change will not alter the results you are getting.

GreenDude

2012/3/25

#

yh is the same thing, a solution may be he jump the ladder instead of speed i write -20. but in the next ladder i ill have same problem... :S

danpost

2012/3/25

#

You should be able to set up a new int variable 'private int ladderSpeed = 3;' in the class, but outside any method within the class, and use it instead of speed.

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