Hi,
I'd like to set a new level/world.
I have an integer called "level". The code
Greenfoot.setWorld(level);
Will not work, because setWorld expects a world variable, but "level" is an integer. How can this problem be solved?
moobe wrote ...
2013/1/18
Set a world
Would this be a world with a seperate class altogether, or a re-creation of the same class using the same code with a new level value? My guess is a re-creation, but have to be sure.
Just like you create an Actor object with: new ActorName()
You can create a World object with: new WorldName()
The re-created world will need to be told what the value of level is, so it can create the correct set-up.
You can create another world constructor in the class to access an int parameter to pass the value:
Now, when changing levels, you can use
You could add more parameters to pass more data (like possibly the current game-score), however, if there are multiple items to pass and methods to call to re-create the world properly then better would be code like the following (without the use of a second constructor):
private int level; // you should already have this
public WorldName()
{
this(1); // calls the other constructor passing the level value
// the (1) can be adjusted; like if you start the value at zero
}
// this will be the constructor that does the work
public WorldName(int lev)
{
super(600, 400, 1);
level = lev;
// rest of construction codeGreenfoot.setWorld(new WorldName(level+1));
WorldName world=new WorldName(); world.level=level+1; world.score=score; // etc. -- public methods in the re-created world can be called from here also world.setMainActor(zelda); // this is just an example; the method would have to be created
That's exactly the thing I needed! But, to be honest, I haven't understood the alternative way. Isn't it easier to expect 2 parameters like this:
Cause otherwise I do not know, where to write the code you have written at the bottom of your post. Does it have to be in my actor? I'm confused..
public WorldName()
{
this(1, zelda); // calls the other constructor passing the level value
// the (1) can be adjusted; like if you start the value at zero
}
// this will be the constructor that does the work
public WorldName(int lev, Zelda zelda)
{ The second part is coded wherever you create the new world at. Anyway, what you just posted would work fine (as long as 'zelda' is declared and assigned a value among your world instance fields with something like
Just make sure you set 'this.zelda' to 'zelda' in the working constructor:
public Zelda zelda = new Zelda();
public class WorldName(int lev, Zelda zelda)
{
super(600, 400, 1);
level = lev;
this.zelda = zelda; // ***** this line ****
// rest of construction
}OK, it compiled fine, but there's still a problem... How does my program now, which "new WorldName" it has to use?
Cause my Level1 expects the integer parameter "1", so it will only work, when I write:
That's not the thing I wanted to do :D
if (diedInLevel1)
{
Greenfoot.setWorld(new Level1(1, zelda));
}
else if (diedInLevel2 .....
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