Creating a /back Plugin

Hello Bukkit community, I have little to no knowledge of Java, but I learn easily. I decided that the best way would be to dig deep and then learn from there. Please do not judge me for my knowledge of Java. If you're here to help, great!

I want to figure out how to find the players location, store it, then wait until they teleport to a new location, where I could teleport them back to their previous location. I have the command basically set up, I just need to know how to actually make the command teleport. I appreciate any and all help, but it would be best if you could complete the code and tell me how it was done. I won't be publishing this plugin anywhere, it is purely for experimental purposes.

Anyways, so far, this is the code I have:

Code:java

package GoBack;
 
import org.bukkit.ChatColor;
import org.bukkit.Location;
import org.bukkit.World;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.plugin.java.JavaPlugin;
 
public class GoBack extends JavaPlugin {
 
 
    @Override
    public void onEnable(){
        getLogger().info("[GoBack] GoBack has been enabled.");
                      }
 
    @Override
    public void onDisable(){
        getLogger().info("[GoBack] GoBack has been disabled.");
                      }
 
 
    public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args){
 
        if (sender instanceof Player){
 
            Player player = (Player) sender;
 
        if(cmd.getName().equalsIgnoreCase("back")) {
            player.sendMessage(ChatColor.GOLD + "Teleportation Will Commence in 5 Seconds.");
            return true;
 
 
 
 
        Player.teleport(loc);
 
        }else {
                sender.sendMessage("You Must Be a Player in Order To Perform This Command.");
                return false;
        //Done in order to prevent console from using /back
            }
 
 
 
                                    }       
    return false;
 
                                                                                            }
 
}

 

I highly recommend you learn Java first before trying to learn a 3rd party API, like Bukkit. See this thread for some learning options.

 

I think you might be right.

 

Sequax
Yeah, without the proper knowledge of Java, you're just going to be getting nowhere. Once you learn the basics, knowledge becomes easily expandable.

If you're in school, winter break should be here/coming up soon. Nice opportunity to learn some stuff.

 

Yeah, got the Java for Dummies book. It's helping to clarify things a lot!

 

Great! That will get you off on a nice start.

 

You can create a location by using something like

Code:java

Location loc = new Location(player.getWorld(), player.getX(), player.getY(), player.getZ());
 
// Or something like that

 

So, I've learned quite a bit... And, I was wondering how I'd use the locations I stored in the teleport method?

This is what I have so far:

Code:java

package goBack.Plugin;
 
import java.util.HashMap;
 
import org.bukkit.Bukkit;
import org.bukkit.ChatColor;
import org.bukkit.Location;
import org.bukkit.command.Command;
import org.bukkit.command.CommandSender;
import org.bukkit.entity.Player;
import org.bukkit.event.player.PlayerTeleportEvent;
import org.bukkit.plugin.java.JavaPlugin;
 
public class Main extends JavaPlugin {
 
 
@Override
public void onEnable(){
getLogger().info("[GoBack] GoBack has been enabled.");
}
 
@Override
public void onDisable(){
getLogger().info("[GoBack] GoBack has been disabled.");
}
 
//enable and disable messages
 
public static HashMap<String, Location> last = new HashMap<String, Location>();
 
public void onTeleport(PlayerTeleportEvent event) {
String playerName = event.getPlayer().getName();
last.remove(playerName);
last.add(playerName, event.getPlayer().getLocation());
//Apparantly there's an error here
}
 
//Logs player locations
 
public boolean onCommand(CommandSender sender, Command cmd, String label, String[] args){
 
if (sender instanceof Player){
 
Player senderPlayer = (Player) sender;
 
if(cmd.getName().equalsIgnoreCase("back")) {
senderPlayer.sendMessage(ChatColor.GOLD + "Teleportation Will Commence in 5 Seconds.");
//Sends player confirmation message
 
Player player = (Bukkit.getServer().getPlayer(args[1]));
Location previousLocation = player.getLocation();
 
player.teleport(previousLocation);
 
return true;
 
}else {
sender.sendMessage("You Must Be a Player in Order To Perform This Command.");
//Prevents console from using command
}
}
return false;
}
}

 

Instead of using player.getLocation() when storing their location in PlayerTeleportEvent, use event.getFrom()
Then, when teleporting in /back, get the location from your HashMap

 

Sequax
Erm.. But.. I said..