1- Create the EventGatekeeper class that extends L2Npc.
2- Add a stopwatch to check the time.
3- Change the HTML of the NPC at the specified time.
4- Make the NPC disappear after one hour.
5- Keep the original teleportation functionality.
CODE EXAMPLE:
Integration with the server:
Register the new NPC on the server:
Make sure to define the NPC in the server data files so that it appears in the game world.
Update the server startup logic:
In the server startup logic, instance and register the new EventGatekeeper.
CODE:
2- Add a stopwatch to check the time.
3- Change the HTML of the NPC at the specified time.
4- Make the NPC disappear after one hour.
5- Keep the original teleportation functionality.
CODE EXAMPLE:
JavaScript:
// File path: java/com/l2jserver/gameserver/services/EventGatekeeper.java
package services;
import java.util.Calendar;
import java.util.Timer;
import java.util.TimerTask;
import l2.gameserver.ThreadPoolManager;
import l2.gameserver.model.actor.L2Npc;
import l2.gameserver.model.actor.instance.L2PcInstance;
import l2.gameserver.model.actor.templates.L2NpcTemplate;
import l2.gameserver.network.serverpackets.NpcHtmlMessage;
public class EventGatekeeper extends L2Npc {
private boolean isEventActive = false;
private Timer timer;
public EventGatekeeper(int objectId, L2NpcTemplate template) {
super(objectId, template);
startEventTimer();
}
private void startEventTimer() {
timer = new Timer();
timer.scheduleAtFixedRate(new TimerTask() {
@Override
public void run() {
checkEventTime();
}
}, 0, 60000); // Check every minute
}
private void checkEventTime() {
Calendar calendar = Calendar.getInstance();
int hour = calendar.get(Calendar.HOUR_OF_DAY);
if (hour >= 18 && hour < 19) { // Assuming event is from 18:00 to 19:00
isEventActive = true;
} else {
isEventActive = false;
}
if (hour == 19) { // At 19:00 make the NPC disappear
this.deleteMe();
timer.cancel();
}
}
@Override
public void showChatWindow(L2PcInstance player) {
if (isEventActive) {
NpcHtmlMessage html = new NpcHtmlMessage(getObjectId());
html.setHtml("<html><body>Event Teleport<br><button value=\"Go to Event\" action=\"bypass -h npc_" + getObjectId() + "_event_teleport\" width=200 height=30 back=\"L2UI_ct1.button_df\" fore=\"L2UI_ct1.button_df\"></body></html>");
player.sendPacket(html);
} else {
super.showChatWindow(player); // Show normal teleport options
}
}
@Override
public void onBypassFeedback(L2PcInstance player, String command) {
if (command.startsWith("event_teleport")) {
teleportPlayerToEvent(player);
} else {
super.onBypassFeedback(player, command); // Handle normal teleport options
}
}
private void teleportPlayerToEvent(L2PcInstance player) {
// Implement event teleport logic
player.teleToLocation(12345, 67890, -9876); // Example coordinates
}
}Integration with the server:
Register the new NPC on the server:
Make sure to define the NPC in the server data files so that it appears in the game world.
Update the server startup logic:
In the server startup logic, instance and register the new EventGatekeeper.
CODE:
JavaScript:
// File path: java/com/l2jserver/gameserver/GameServer.java
import services.EventGatekeeper;
import l2.gameserver.model.actor.templates.L2NpcTemplate;
import l2.gameserver.data.xml.holder.NpcTemplateHolder;
// Somewhere in the server initialization logic
L2NpcTemplate template = NpcTemplateHolder.getInstance().getTemplate(npcId); // Use the appropriate NPC ID
EventGatekeeper eventGatekeeper = new EventGatekeeper(objectId, template);