/*
* This file is part of Skript.
*
* Skript is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Skript is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Skript. If not, see <http://www.gnu.org/licenses/>.
*
*
* Copyright 2011-2014 Peter Güttinger
*
*/
package ch.njol.skript.effects;
import java.util.Collections;
import java.util.Set;
import java.util.WeakHashMap;
import org.bukkit.Bukkit;
import org.bukkit.event.Event;
import org.eclipse.jdt.annotation.Nullable;
import ch.njol.skript.Skript;
import ch.njol.skript.doc.Description;
import ch.njol.skript.doc.Examples;
import ch.njol.skript.doc.Name;
import ch.njol.skript.doc.Since;
import ch.njol.skript.lang.Effect;
import ch.njol.skript.lang.Expression;
import ch.njol.skript.lang.SkriptParser.ParseResult;
import ch.njol.skript.lang.TriggerItem;
import ch.njol.skript.util.Timespan;
import ch.njol.util.Kleenean;
/**
* @author Peter Güttinger
*/
@Name("Delay")
@Description("Delays the script's execution by a given timespan. Please note that delays are not persistent, e.g. trying to create a tempban script with <code>ban player → wait 7 days → unban player</code> will not work if you restart your server anytime within these 7 days. You also have to be careful even when using small delays! ")
@Examples({"wait 2 minutes",
"halt for 5 minecraft hours",
"wait a tick"})
@Since("1.4")
public class Delay extends Effect {
static {
Skript.registerEffect(Delay.class, "(wait|halt) [for] %timespan%");
}
@SuppressWarnings("null")
private Expression<Timespan> duration;
@SuppressWarnings({"unchecked", "null"})
@Override
public boolean init(final Expression<?>[] exprs, final int matchedPattern, final Kleenean isDelayed, final ParseResult parseResult) {
duration = (Expression<Timespan>) exprs[0];
return true;
}
@Override
@Nullable
protected TriggerItem walk(final Event e) {
debug(e, true);
final long start = Skript.debug() ? System.nanoTime() : 0;
final TriggerItem next = getNext();
if (next != null) {
delayed.add(e);
final Timespan d = duration.getSingle(e);
if (d == null)
return null;
Bukkit.getScheduler().scheduleSyncDelayedTask(Skript.getInstance(), new Runnable() {
@Override
public void run() {
if (Skript.debug())
Skript.info(getIndentation() + "... continuing after " + (System.nanoTime() - start) / 1000000000. + "s");
TriggerItem.walk(next, e);
}
}, d.getTicks());
}
return null;
}
@SuppressWarnings("null")
private final static Set<Event> delayed = Collections.newSetFromMap(new WeakHashMap<Event, Boolean>());
public final static boolean isDelayed(final Event e) {
return delayed.contains(e);
}
@Override
protected void execute(final Event e) {
throw new UnsupportedOperationException();
}
@Override
public String toString(final @Nullable Event e, final boolean debug) {
return "wait for " + duration.toString(e, debug) + (e == null ? "" : "...");
}
}