Greenfoot

2013/3/23

#

i have a torrent that fires bullets but when its fires the bullet goes to the side of the torrent. here is the code i used. Normal is the name of the bullet the torrent fires. rotation is a static instance variable of the Normal class

 public void fire()
    {
        if(reloadDelayCount >= gunReloadTime) { 
            
            getWorld().addObject(new Normal(), getX(), getY());
            Normal.rotation = getRotation();
            
        }
    }

danpost

2013/3/23

#

If your default image of the object that fires the bullet is pointing up, you need to subtract 90 from the rotation for the bullet. However, you should not need a field to hold to rotation in the bullet class. Better would be to just set the rotation after creating the bullet as follows:

public void fire()
{
    if(reloadDelayCount >= gunReloadTime)
    {
        Normal normal = new Normal();
        getWorld().addObject(normal, getX(), getY());
        normal.setRotation(getRotation()-90);
    }
}

GrimCreeper312

2013/3/23

#

thanks

GrimCreeper312

2013/3/23

#

now when i fire it doesn't add the bullet at the end of the barrel but instead it adds it to the center of the turrent i have tried to change the getX() + 5) or getY() + 5) but it hasent worked do u have any ideas

danpost

2013/3/23

#

There are (at least) two ways to resolve this. One is to 'move' the bullet the distance of the barrel after setting its rotation; the other is to 'set the paint order' so the bullet comes out from behind the turrent.

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