Greenfoot

Steve9719 wrote ...

2018/4/1

Setting a Variable to a Parameter??

Steve9719

2018/4/1

I created a variable called maxtime and added a paramter to my constructor called maxtime, now it's asking me to "Modify the Barrel constructor so that the maxtime class variable is set to the maxtime parameter. I tried to do it by setting maxtime = maxtime; but I'm stuck and I really have no idea what to do... @danpost please help! Here's my code:

import greenfoot.*;

public class Barrel extends Actor
{
 int timer;
 int maxtime;

 public void act() 
 {
     resetBarrel();
 }
 public Barrel(int maxtime)
 {
    timer = 0;
    maxtime = 250;
    maxtime = maxtime;
 }
 public void resetBarrel()
 {
     timer++;
     if (timer > maxtime)
     {
       timer = 0;
       setLocation(Greenfoot.getRandomNumber(650)+70, Greenfoot.getRandomNumber(450)+70);
     }
 }
}

Vercility

2018/4/1

Rename the parameter to maxTime2

maxTime = maxTime2;

Or use this.maxTime

this.maxTime = maxTime;

Ure using 2 variables with identical names, Java will automatically use the 'closer' one, which is the parameter one in this case. U then set it to itself, effectively doing nothing.

Steve9719

2018/4/1

Hey thanks Vercility, I used

this.maxtime = maxtime

and I think it worked. My code isn't messing up anymore thankfully. Quick question though.. I have to modify the line above so that we subtract a random number between 0-49 from the maxtime. Any idea on how to subtract a random number?

danpost

2018/4/1

Steve9719 wrote...

I have to modify the line above so that we subtract a random number between 0-49 from the maxtime. Any idea on how to subtract a random number?

Just subtract Greenfoot.getRandomNumber(50).

Steve9719

2018/4/1

It works perfectly, thanks guys!

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Setting a Variable to a Parameter??