Greenfoot

JetLennit

2013/4/1

#

I would like to randomly select one of the parts of an array list and insert it where it says "this is where i want to insert the random splash"

import greenfoot.*;
import java.awt.Color;

public class splash  extends maintitle
{
    public void act()
    {
        updateImage();
    }
    private void updateImage()
    {
        setImage(new GreenfootImage("" + /*this is where i want to insert the random splash*/, 20, Color.GREEN, null));
    }
    public static String[] getSplashes()
    {
        String[] splashes = {"Shooting Aliens!", "Vwoorp!", "qul!", "Worf Does It!", "Make It So!", "Engage!",
        "It's A Trap!", "Trust Me, I'm The Doctor!"};
        return splashes;
    }
}

FlyingRabidUnicornPig

2013/4/1

#

You either should insert code for random in that section, or have a random method. To use random, import java.util.Random, and make a new Random object in your random method:

public int random()
{
    Random r = new Random();
    ...

and tell it to return a random integer up to the length of the splashes:

return r.nextInt(getSplashes().length);

That should return a random splash.

JetLennit

2013/4/1

#

what about the Greenfoot.getRandomNumber?

FlyingRabidUnicornPig

2013/4/1

#

Oh, sorry, used to Random. Yes, you can use Greenfoot.getRandomNumber(getSplashes().length) That would be a lot easier.

Game/maniac

2013/4/1

#

I probably wrong but this might work: setImage(new GreenfootImage("" + getSplashes(), 20, Color.GREEN, null));

JetLennit

2013/4/1

#

It just puts up a lot of random numbers...

JetLennit

2013/4/1

#

Game/maniac's works!

FlyingRabidUnicornPig

2013/4/1

#

Game/maniac wrote...

I probably wrong but this might work: setImage(new GreenfootImage("" + getSplashes(), 20, Color.GREEN, null));

Yah, i think that would work.

JetLennit

2013/4/1

#

once i modify my code

Game/maniac

2013/4/1

#

setImage(new GreenfootImage("" + getSplashes(), 20, Color.GREEN, null)); might be better though if you add more splashes

JetLennit

2013/4/1

#

Now i cant find out a way to avoid using the act method to update the image...

Game/maniac

2013/4/1

#

Update it in the constructor

JetLennit

2013/4/1

#

what constructor?

Game/maniac

2013/4/1

#

This is a constructor if you didn't know:

public splash(/*variable go here*/)
{
    //code goes here
}

Game/maniac

2013/4/1

#

The constructor is called when you create the object

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How to select a random part of an array list