Can bukkit tell time on the computer it hosted on?

I makeing a plugin that uses a lib that send email at a time can bukkit then when it rech mid night on the hosted computer?

 

GRANTSWIM4
I made a resource for this awhile ago
http://forums.bukkit.org/threads/how-to-get-the-date-and-time.106959/

 

although im not certain i think the answer is it goes off of minecraft time therefor no. although im not positive its worth researching google it maybe a more advanced plugin creator can give the answer

nevermind then seems that there is one

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Can it do a event at a time

 

since bucket plugins are written in java you have access to all the java libraries

to get the time and date you have several options

long t=System.currentTimeMillis();
long d=new Date().getTime();

these return the current time as a long

Calendar cal=new GregorianCalendar();

there are functions in cal to get the time / date etc

 

I want it when it turns mid night it will do a event to the sever

Sorry for being noob we were all one at some point xD @EweLoon @mastermustard KeybordPiano459

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

You would have to schedule a task checking for world time

 

I want it when it reach 12:00 it will do a event

 

Schedule a task that will check what time it is, every x minutes. If time = 12:00 => do you thing.

 

Where do i schedule?

 

onEnable() probably

 

Yeah, GRANTSWIM4 in your onEnable() method schedule a task with the time being how long there is until midnight (detected in your onEnable())

 

This plugin going to be on 50 severs becuse im doing it for a sever host who puting it on there severs so if there reset there sever what would i do?

 

Uhm... the exact same thing? I said you should try to detect how much time there is left until midnight, so it doesn't matter when you start the server.

 

Since long t=System.currentTimeMillis(); returns the time in milliseconds
and there are 86400000 milliseconds per day

first create a public long in your plugin called "tomorrow" inside your main class
and also a public BukkitScheduler called scheduler

public long tomorrow;
public BukkitScheduler scheduler;


in the onEnable() procedure

initialize tomorrow, scheduler and start an async monitoring task

Code:

public void onEnable() {
ccs=getServer().getConsoleSender();
getServer().getPluginManager().registerEvents(this, this);
config=getConfig();
 
log("Enabled");
 
tomorrow=(long)Math.floor(System.currentTimeMillis() / 86400000)+1;
scheduler=getServer().getScheduler();
scheduler.runTaskTimerAsynchronously(this, new Runnable() {
@Override
public void run() {
long t=System.currentTimeMillis();
long dat = (long)Math.floor(t / 86400000);
if (dat>=tomorrow){
tomorrow=dat+1;
 
//   do your stuff here
//   note as its async, dont access bukit API unless you know they are safe to use in ASync tasks
 
}
}
}, 1, 1);
}

if you need to use API functions shedule a Sync task to do it
add another public var
public Plugin plugin=this;
then add the following to your ASync Task

Code:

                    scheduler.runTask(plugin, new Runnable() {
                        @Override
                        public void run() {
                            // Do api stuff here       
                        }
                    });                   

 

Thank for the help as Ewe Loon sated

Can i just get the time and when it hit midnight it will do the event


Edit: posted b 4 what he said

 

you might want to store the tomorrow var in the config, incase the server is not running at midnight

 

ok can some one point me to a tut about config i never touch them yet

 

use a dateformat and a date instance
also inside a check like so

Code:

int taskID = Bukkit.getServer().getScheduler().scheduleAsyncRepeatingTask(plugin, new Runnable(){
public void run(){
SimpleDateFormat f = new SimpleDateFormat("HH:mm");
String s = f.format(new Date());
if(s.equals(00:00)){
//thread safe code to start the event
Bukkit.getServer().getScheduler().cancelTask(taskID);
}
}
},0,200);

then once the event is done restart the task.
and if the server ain't running at midnight the event wont happen and in your onenable call the method that starts this task.

 

Lightweight version

Code:java

Calendar midnight = Calendar.getInstance();
        midnight.set(Calendar.HOUR_OF_DAY, 0);
        midnight.set(Calendar.MINUTE, 0);
        midnight.set(Calendar.SECOND, 0);
        midnight.set(Calendar.MILLISECOND, 1);
        midnight.set(Calendar.DAY_OF_YEAR, midnight.get(Calendar.DAY_OF_YEAR) + 1);
        long tillMidnight = midnight.getTimeInMillis() - System.currentTimeMillis() - 1;
        long ticksTillMidnight = tillMidnight / 50;

This code gets you the amount of ticks till the next midnight. Just run a sync scheduler with this in each onEnable().
Also, no config is needed as it would reassign itself in each onEnable()

 

nice method!

 

Thanks

 

why do people go through all that to get the number of millies till midnight when

long tillmidnight = 86399999 - (system.currentTimeMillis() % 86400000);

will do exactly the same thing and a lot more processor efficient

also comparing a formated date with "00:00" will fail if the server lags or is not running

full api docs http://jd.bukkit.org/apidocs/overview-summary.html

public FileConfiguration =getConfig()

FileConfiguration api is here http://jd.bukkit.org/apidocs/org/bukkit/configuration/file/FileConfiguration.html

EDIT by Moderator: merged posts, please use the edit button instead of double posting.

 

Ewe Loon The code:

Code:java

public static void main(String[] args)
{
long time = System.nanoTime();
Calendar midnight = Calendar.getInstance();
midnight.set(Calendar.HOUR_OF_DAY, 0);
midnight.set(Calendar.MINUTE, 0);
midnight.set(Calendar.SECOND, 0);
midnight.set(Calendar.MILLISECOND, 1);
midnight.set(Calendar.DAY_OF_YEAR, midnight.get(Calendar.DAY_OF_YEAR) + 1);
long tillMidnight = midnight.getTimeInMillis() - System.currentTimeMillis() - 1;
long ticksTillMidnight = tillMidnight / 50;
System.out.println(ticksTillMidnight);
 
System.out.println("nano:"+(System.nanoTime() - time));
time = System.nanoTime();
long tillmidnight = 86399999 - (System.currentTimeMillis() % 86400000);
long ticks = tillmidnight / 50;
System.out.println(ticks);
System.out.println("nano: "+(System.nanoTime() - time));
 
}

The output:

Code:

1646861 // The amount of ticks, my version
nano:49165362 // Nanoseconds it took to run, my version
1718861 // The amount of ticks, your version
nano: 71375 // Nanoseconds it took to run, your version

A quick calculation (1656000 = 23*3600*1000/50) shows that my amount of ticks was close, and yours was way off. Explain the difference please ;3

 

if its not running you dont even need to start the event?
and if it laggs it will just do it a little but later.

 

Can i use a if satement

 

You can use any control statement to implement your method.

 

got it i have to ask one thing How do i tell if it first startup

 

although other people came up with alot of ideas that are probably better you could have it do an event off ticks and since one full cycle of day/night=24000 ticks (17 minutes) you could have it enable off startup. there for you could have there be a huge amount of ticks inbetween each event.

hypothetically speaking if those servers restarted every 12 hours have the event go inbetween those startups so in the 6th hour after each startup an event would happen. 6 hours = 508,235 ticks

there methods are probably better but this is just an idea

 

I need to know what a sync scheduler I am vary new with java I wacth some tuts and stuff