Check events that occurred in a certain period of time

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Check events that occurred in a certain period of time

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#1 by (0 votes)

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I need to register the following event in my program:

Players who kill 5 times during the 1 minute interval will win a prize.

My class mapping is as follows:

public class Game {
    private String name;
    private HashMap<String,Player> players;
    private Player serialKiller;
    private Integer streak; 
}

public class Player implements Comparable<Player> {
        private String name;
        private List<Murder> murderList = new ArrayList<Murder>();
        private List<Death> deathList = new ArrayList<Death>();
}

public class Murder {
    private Date date;
}

Log file:

07/30/2013 15:34:22 - New match 11348965 has started

30/07/2013 15:36:04 - Roman killed Nick using M16

30/07/2013 15:36:05 - Roman killed mane using M16

30/07/2013 15:36:06 - Roman killed jose using M16

30/07/2013 15:36:07 - Roman killed trevis using M16

30/07/2013 15:36:08 - Roman killed santana using M16

07/30/2013 15:36:05 - noob1 killed noob2 using M16

07/30/2013 15:36:06 - noob1 killed noob3 using M16

07/30/2013 15:36:07 - noob1 killed noob4 using M16

07/30/2013 15:36:07 - noob10 killed noob1 using M16

07/30/2013 15:36:07 - noob10 killed noob1 using M16

07/30/2013 15:36:07 - noob10 killed noob1 using M16

07/30/2013 15:36:07 - noob10 killed noob1 using M16

07/30/2013 15:36:07 - noob10 killed noob1 using M16

07/30/2013 15:36:07 - noob10 killed noob1 using M16

07/30/2013 15:36:07 - noob10 killed noob1 using M16

07/30/2013 15:36:07 - noob10 killed noob1 using M16

07/30/2013 15:36:07 - noob10 killed noob1 using M16

30/07/2013 15:36:33 - killed Nick by DROWN

07/30/2013 15:39:22 - Match 11348965 has ended

% time of opponents' death is defined in the user class by the Murder class list.

How can I find out if the player will win the prize without using Threads?

java date

asked by anonymous 30.07.2014 / 20:29

1 answer

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score 0 · Accepted Answer

As you have not specified whether you have an aversion to JavaFX, this is probably what you are looking for, since this technology allows lists with Listeners or it is just a matter of checking whenever the list is modified if the player deserves the prize .

public class Player implements Comparable<Player> {
        private String name;
        private List<Death> deathList = new ArrayList<Death>();
        private ObservableList<Murder> murderList = FXCollections.observableArrayList();
        public Player(){
            this.murderList.addListener(new ListChangeListener<Murder>(){
                @Override
                public void onChanged(ListChangeListener.Change<? extends Murder> c) {
                    if(murderList.size()>5){
                        int lastIndex = murderList.size()-1;
                        Date lastMurder = murderList.get(lastIndex).getDate();
                        boolean flag = true;
                        for(int i=lastIndex-1;i>=lastIndex-5;i--){
                            Date tempDate  = murderList.get(i).getDate();
                            //se em algum caso for maior que 60 descarta o prêmio
                            if(timeDiff(tempDate,lastMurder)>60){
                                flag = false;
                                break;
                            }
                        }
                        if(flag){
                            //receivePrize();
                        }
                    }   
                }
            });
        }
        public static long timeDiff(Date d1, Date d2){
            return (d2.getTime() - d1.getTime())/1000;
        }
}