I'm sorry i've been asking too many questions. Um can someone tell me how to make actors appear randomly? and in different places? thank you
rachpaguia@gmail.com wrote ...
2017/3/14
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rachpaguia@gmail.com wrote...
I'm sorry i've been asking too many questions. Um can someone tell me how to make actors appear randomly? and in different places? thank you
With the information that you gave me you can do this:
What state(s) do you wish to randomize? when to appear? which actor should appear? (where was covered at the end of your post). Without knowing exactly what you want to do, I could end up giving you more than you require or the wrong thing altogether. As far as where, do you have a set of specific places to be chosen from or anywhere? Also, are there limits as to how many of these object(s) can be in the world?
// place outside all methods
private int timer = Greenfoot.getRandomNumber(100) + 100; // the amount of time before the actor appears
// in act
timer--;
if (timer == 0)
{
addObject(new ClassName(), Greenfoot.getRandomNumber(getWidth()), Greenfoot.getRandomNumber(getHeight()));
// I didn't see you say that a random amount should appear so there will just be one
timer = Greenfoot.getRandomNumber(100) + 100;
}danpost wrote...
rachpaguia@gmail.com wrote...
I'm sorry i've been asking too many questions. Um can someone tell me how to make actors appear randomly? and in different places? thank youOh, I meant where and when! Sorry for being vague
@Nosson, does this certain code make actors appear at different times?
With the code Nosson1459 supplied, a new object will spawn somewhere in the world every 2 to 4 seconds (about).
It will make a certain type of actor with the name ClassName spawn every random amount of time in a random place on the frame.
Oh, that's great! I'll try it out, thank you!
I tried the code but it said that private int is considered an error, as it is an illegal start of an expression. What must I put to correct it?
rachpaguia@gmail.com wrote...
I tried the code but it said that private int is considered an error, as it is an illegal start of an expression. What must I put to correct it?i dont think i'm missing anything,, here is my entire code
{
//This is too make our image (balloons) smaller
GreenfootImage image = getImage();
image.scale(330,150);
setImage(image);
//This is too make the object fall
setLocation (getX(), getY()+7);
Greenfoot.setSpeed(+20);
//This is to make the object disappear when a the said key is pressed
String key = "enter";
if (Greenfoot.isKeyDown("A"))
{
getWorld().removeObject(this);
}
public int timer = Greenfoot.getRandomNumber(100) + 100;
timer--;
if (timer = 0)
{
addObject(new C.java(), Greenfoot.getRandomNumber(getWidth()), Greenfoot.getRandomNumber(getHeight()));
timer = Greenfoot.getRandomNumber(100) + 100;
}
}
}
The code for adding objects should be in your world's act method. The 'private int ...' line should be outside methods.
rachpaguia@gmail.com wrote...
i dont think i'm missing anything,, here is my entire code{
/**
* Act - do whatever the A wants to do. This method is called whenever
* the 'Act' or 'Run' button gets pressed in the environment.
*/
public void act()
{
//This is too make our image (balloons) smaller
GreenfootImage image = getImage();
image.scale(330,150);
setImage(image);
//This is too make the object fall
setLocation (getX(), getY()+7);
Greenfoot.setSpeed(+20);
//This is to make the object disappear when a the said key is pressed
String key = "enter";
if (Greenfoot.isKeyDown("A"))
{
getWorld().removeObject(this);
}
private int timer = Greenfoot.getRandomNumber(100) + 100;
timer--;
if (timer = 0)
{
addObject(new C.java(), Greenfoot.getRandomNumber(getWidth()), Greenfoot.getRandomNumber(getHeight()));
timer = Greenfoot.getRandomNumber(100) + 100;
}
}
}
oh yea nice one
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