CODEWITHSUNDEEP
javaandroidmultithreadinglibgdx
user2002077
user2002077

Reputation: 635

How to get updated variable from my Thread countdown time class

Hi I have been trying to make a simple 10 second countdown timer for my libgdx game for hours now but I keep running into problems. I am now running the countdown timer in a separate class which implements runnable. This class works perfectly and it counts down the time as planned, I have ran a system.out.println within this thread to verify it working. The problem is printing/drawing this timer variable in my main game screen.

If I try to print this variable from my game screen I get the starting variable of it i.e. ten rather than the constantly updating one(counting down from ten). I have even used a getter method with still no luck. Any ideas how to achieve this? Thanks

I am assuming this is because the Thread is running parallel to the main game?

public class timekeep implements Runnable {
public Boolean TimerRunning=true;
private int Timer = 10; //need to print this from my main game screen as it changes

    public void run() {
    while(TimerRunning == true) {
            System.out.println("Time left "+ Timer);//works perfectly prints countdown
            //run code 
            //subtracts 1 from Timer every second
        }
    }

    public int gettime(){
        return Timer;//returns timer
    }
}
....

//accessing Timer variable from main game
System.out.println(Timekeep.gettime());//prints 10 all the time in the main screen

Upvotes: 0

Views: 458

Answers (1)

Theodore Norvell
Theodore Norvell

Reputation: 16261

Well your code executes two new timekeep() expressions and so two objects are created. You need to recode so that only one timekeep object is created. E.g.

timekeep theTimeKeeper = new timekeep() ;
Thread t1 = new Thread(theTimeKeeper));
t1.start() ;
... 
System.out.println(theTimeKeeper.gettime());

Upvotes: 1

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