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Forums: Swing / AWT / SWT Game Development
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How to set a timer for timed mode?

Grace Loughran
Greenhorn

Joined: Feb 25, 2014
Posts: 15
I'm not sure how I will start it; I tried doing some research and I don't think Swing timers fit.

But here's really what I'm after:

For example, the player chooses Timed mode, then we'll suppose there'll be 1 minute for the player to play the game, and once it's over, then scores will be recorded. (When paused, the timer will also pause).

I'm not exactly asking for codes, I'm a beginner and would appreciate a few suggestions like what stuff should I learn about, something like that to begin this task.
Stephan van Hulst
Bartender

Joined: Sep 20, 2010
Posts: 3986
    
  18

I'm assuming your game is event-driven, and doesn't use a main program loop (usually the case with real-time games).

When your player starts their turn, you can pass a TimerTask to java.util.Timer that executes once or twice per second (use scheduleAtFixedRate()). Each time it executes, you update the GUI (just call repaint() and let the GUI decide how many seconds are left). When the TimerTask determines that time has run out, it tells your model that the turn should end, and then it performs cancel() on itself.


The mind is a strange and wonderful thing. I'm not sure that it will ever be able to figure itself out, everything else, maybe. From the atom to the universe, everything, except itself.
Campbell Ritchie
Sheriff

Joined: Oct 13, 2005
Posts: 43968
    
  33
Beware: Complicated and confusing post to follow.

There are two sorts of Timer, which work slightly differently. You can read about the other one (Swing) here. Then you can decide which sort is better for your current requirements. If the Swing Timer works in the Event Dispatch Thread (EDT), you may find it blocks your entire GUI, in which case you will want the other Timer. In Timer, it suggests this link will help; I haven't read it.
Remember you need to enter the EDT so your Timer or TimerTask would have to enter it: start reading here.

Actually, there is a third kind of Timer (Management) in the API.
Stephan van Hulst
Bartender

Joined: Sep 20, 2010
Posts: 3986
    
  18

Campbell Ritchie wrote:Remember you need to enter the EDT so your Timer or TimerTask would have to enter it: start reading here.


Not necessarily. They can simply update the model, and call repaint() on the GUI. repaint() does not have to be on the EDT.
 
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